UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-0816 --------------------------------------------- AMERICAN CENTURY MUTUAL FUNDS, INC. - -------------------------------------------------------------------------------- (Exact name of registrant as specified in charter) 4500 MAIN STREET, KANSAS CITY, MISSOURI 64111 - -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip code) CHARLES A. ETHERINGTON, 4500 MAIN STREET, KANSAS CITY, MISSOURI 64111 - -------------------------------------------------------------------------------- (Name and address of agent for service) Registrant's telephone number, including area code: 816-531-5575 ---------------------------- Date of fiscal year end: 10-31 ------------------------------------------------------ Date of reporting period: 04-30-2008 ------------------------------------------------------
ITEM 1. REPORTS TO STOCKHOLDERS. [front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS ULTRA® FUND PRESIDENT'S LETTER JONATHAN THOMAS [photo of Jonathan Thomas] Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® Ultra Fund for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns . . . . . . . . . . . . . . . . . . . . . . 2 ULTRA Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries. . . . . . . . . . . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 6 Shareholder Fee Example . . . . . . . . . . . . . . . . . . . . . . . 7 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 9 FINANCIAL STATEMENTS Statement of Assets and Liabilities . . . . . . . . . . . . . . . . . 13 Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . 15 Statement of Changes in Net Assets. . . . . . . . . . . . . . . . . . 16 Notes to Financial Statements . . . . . . . . . . . . . . . . . . . . 17 Financial Highlights. . . . . . . . . . . . . . . . . . . . . . . . . 22 OTHER INFORMATION Additional Information. . . . . . . . . . . . . . . . . . . . . . . . 28 Index Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 29 The opinions expressed in the Market Perspective and the Portfolio Commentary reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of Chief Investment Officer] By Steve Lurito, Chief Investment Officer, U.S. Growth Equity VOLATILITY UP, STOCKS DOWN The six months ended April 30, 2008 saw stocks produce negative returns as market volatility surged in the wake of the subprime credit crisis. In terms of the economy, tighter credit and the slumping housing market hurt consumer spending and confidence, leading many economists to suggest we're already in recession. Meanwhile, mounting losses hurt the banks, brokers, and other big institutional players important for the functioning of the financial markets. Facing dual economic and financial crises, the Federal Reserve (the Fed) took a series of extraordinary steps, slashing interest rates and acting as a lender of last resort not only for banks, but also major brokers. That helped stocks rebound, with many analysts suggesting that the mid-March buy-out of investment bank Bear Stearns--in a deal arranged by the Fed--put a floor under the market. RETURNS BY SIZE, STYLE MIXED Performance by size and style was mixed (see the accompanying table), reflecting the volatile trading during the period, when corporate earnings estimates were revised down sharply. Looking at returns by sector, energy shares were the only segment to produce positive results during the six months. At the other end of the spectrum, credit-related losses took a big bite out of earnings for financials stocks, which performed worst. Consumer discretionary shares also lagged badly, as did information technology stocks, which suffered from poor pricing and demand trends for chips and some consumer-related tech goods. OPPORTUNITY AMID VOLATILITY Despite the uncertainty surrounding the economy, we think growth-oriented stocks can perform well relative to value as proven earnings growth becomes scarce during economic slowdowns. And while we don't see an end to market volatility anytime soon, we view this dynamic as a natural part of the investing cycle--and one that presents us with opportunities to build positions in what we believe are high-quality companies trading at attractive prices. Indeed, investors should rest assured that we're finding no shortage of companies demonstrating sustained earnings growth and business improvement. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% * Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE Ultra Total Returns as of April 30, 2008 Average Annual Returns 10 Since Inception 6 months(1) 1 year 5 years years Inception Date INVESTOR CLASS -10.73% 5.99% 7.50% 2.58% 12.30% 11/2/81 RUSSELL 1000 GROWTH INDEX(2) -9.28% -0.23% 9.52% 1.66% 11.07%(3) -- S&P 500 INDEX(2) -9.64% -4.68% 10.62% 3.89% 12.64%(3) -- Institutional Class -10.64% 6.20% 7.71% 2.78% 5.49% 11/14/96 A Class(4) No sales charge* -10.83% 5.75% 7.24% 2.33% 5.34% With sales charge* -15.95% -0.33% 5.98% 1.72% 4.81% 10/2/96 B Class No sales charge* -11.15% -- -- -- -6.04%(1) With sales charge* -16.15% -- -- -- -11.04%(1) 9/28/07 C Class No sales charge* -11.16% 4.95% 6.46% -- 2.61% With sales charge* -11.82% 4.95% 6.46% -- 2.61% 10/29/01 R Class -10.96% 5.47% -- -- 5.11% 8/29/03 * Sales charges include initial sales charges and contingent deferred sales charges (CDSCs), as applicable. A Class shares have a 5.75% maximum initial sales charge for equity funds and may be subject to a maximum CDSC of 1.00%. B Class shares redeemed within six years of purchase are subject to a CDSC that declines from 5.00% during the first year after purchase to 0.00% the sixth year after purchase. C Class shares redeemed within 12 months of purchase are subject to a maximum CDSC of 1.00%. The SEC requires that mutual funds provide performance information net of maximum sales charges in all cases where charges could be applied. (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (3) Since 10/31/81, the date nearest the Investor Class's inception for which data are available. (4) Prior to September 4, 2007, the A Class was referred to as the Advisor Class. Performance, with sales charge, prior to that date has been adjusted to reflect the A Class's current sales charge. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing involves special risks, such as political instability and currency fluctuations. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 3 Ultra Growth of $10,000 Over 10 Years $10,000 investment made April 30, 1998
One-Year Returns Over 10 Years Periods ended April 30 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Investor Class 25.52% 27.06% -26.70% -9.83% -14.79% 21.64% -0.07% 10.09% 1.24% 5.99% Russell 1000 Growth Index 26.53% 27.58% -32.25% -20.10% -14.35% 21.65% 0.40% 15.18% 12.25% -0.23% S&P 500 Index 21.82% 10.13% -12.97% -12.63% -13.31% 22.88% 6.34% 15.42% 15.24% -4.68% Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing involves special risks, such as political instability and currency fluctuations. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 4 PORTFOLIO COMMENTARY Ultra Portfolio Managers: Tom Telford and Steve Lurito PERFORMANCE SUMMARY Ultra returned -10.73%* for the six months ended April 30, 2008, trailing the - -9.28% return of its benchmark, the Russell 1000 Growth Index. The S&P 500 Index, a broad measure of the stock market, returned -9.64%. The six-month period was a challenging one for both the overall equity market and the fund as economic and market conditions changed dramatically. The factors that helped Ultra outperform the Russell 1000 Growth Index by a wide margin in 2007 reversed in the first four months of 2008--large-cap growth stocks lost ground to large-cap value issues, momentum stocks fell out of favor, market volatility increased, and the leading sectors from 2007 were among the worst performers in early 2008. The shifting landscape also had a negative impact on the fund's foreign holdings, creating a further drag on performance. Given these significant headwinds, the fund held up reasonably well compared with its benchmark and the broad market indexes. One goal of the process improvements we implemented over the past 18 months was to avoid straying too far from the benchmark when our investment approach is not in favor, and we believe we were successful in that regard during the period. TECHNOLOGY DETRACTED Virtually all of the fund's underperformance during the six-month period resulted from our information technology holdings. Technology was one of the worst-performing sectors in the benchmark index, so our overweight position in the sector hurt relative results. Stock selection also detracted from performance compared with the index, particularly among software makers and internet services providers. The most significant individual detractor was online advertising and search company Google, which was one of the fund's largest holdings during the period. Google reported disappointing earnings in early 2008, which led to concerns that the economic slowdown was having a detrimental impact on internet advertising. However, online advertising is still the fastest-growing segment of the ad industry, and Google continues to increase its market share, so we remain confident in the company's long-term prospects. Economic concerns hit other high-growth holdings within the technology sector, including video game maker Nintendo and handheld device maker Research In Motion (RIM). We sold Nintendo and reduced our position in RIM during the period. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Microsoft Corporation 3.9% 1.1% Cisco Systems Inc. 3.2% 3.7% Intel Corp. 2.8% 2.9% Apple Inc. 2.3% 3.5% Hewlett-Packard Co. 2.2% 2.6% Emerson Electric Co. 2.1% 2.0% Union Pacific Corp. 1.9% -- International Business Machines Corp. 1.9% 1.6% Google Inc. Cl A 1.9% 4.3% Wal-Mart Stores, Inc. 1.8% -- * All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. - ------ 5 Ultra MIXED RESULTS IN CONSUMER DISCRETIONARY Although the portfolio's consumer discretionary stocks outperformed their counterparts in the benchmark index, some of the fund's best and worst relative performance contributors came from this sector. Stock selection among restaurants was the key to the overall outperformance of the fund's consumer discretionary holdings, led by fast-food companies McDonald's and Yum! Brands (owner of the Taco Bell, KFC, and Pizza Hut chains). Both companies benefited from strong results in their international businesses--McDonald's in Europe, Yum! in China. One of portfolio's worst relative performers also came from this sector--private education firm Apollo Group. Rising recruitment costs cut into profit margins, and enrollment was hurt by the credit crunch, which made it more difficult for students to get education loans. ENERGY OUTPERFORMED Stock selection and an overweight in energy--the best-performing sector in the benchmark index--added value to relative performance during the period. In 2007, we built positions in a number of energy companies that focused on natural gas, for several reasons: (1) a wide differential between oil and natural gas prices, (2) accelerating production as more natural gas reserves were discovered, and (3) an increase in the development of new natural-gas power plants. This approach proved successful as four of the top ten relative performance contributors were energy stocks with an emphasis on natural gas, including XTO Energy, Apache, EOG Resources, and Noble Energy. A LOOK AHEAD The recent market volatility and shift away from momentum-style investing created a difficult environment for our investment approach. However, we remain confident that our process of identifying large companies with improving business fundamentals, accelerating growth, and price momentum will generate outperformance over the long term compared with the Russell 1000 Growth Index. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Semiconductors & Semiconductor Equipment 6.8% 5.8% Oil, Gas & Consumable Fuels 6.8% 3.9% Communications Equipment 6.6% 7.4% Software 5.3% 5.6% Capital Markets 4.8% 3.8% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 90.4% 87.4% Foreign Common Stocks(1) 7.9% 11.6% TOTAL COMMON STOCKS 98.3% 99.0% Temporary Cash Investments 2.5% 2.3% Other Assets and Liabilities(2) (0.8)% (1.3)% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. (2) Includes securities lending collateral and other assets and liabilities. - ------ 6 SHAREHOLDER FEE EXAMPLE (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 7 Beginning Expenses Paid Account Ending During Period* Annualized Value Account Value 11/1/07 - Expense 11/1/07 4/30/08 4/30/08 Ratio* ACTUAL Investor Class $1,000 $892.70 $4.66 0.99% Institutional Class $1,000 $893.60 $3.72 0.79% A Class $1,000 $891.70 $5.83 1.24% B Class $1,000 $888.50 $9.34 1.99% C Class $1,000 $888.40 $9.34 1.99% R Class $1,000 $890.40 $7.00 1.49% HYPOTHETICAL Investor Class $1,000 $1,019.94 $4.97 0.99% Institutional Class $1,000 $1,020.93 $3.97 0.79% A Class $1,000 $1,018.70 $6.22 1.24% B Class $1,000 $1,014.97 $9.97 1.99% C Class $1,000 $1,014.97 $9.97 1.99% R Class $1,000 $1,017.45 $7.47 1.49% * Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 8 SCHEDULE OF INVESTMENTS Ultra APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 98.3% AEROSPACE & DEFENSE -- 4.1% 1,019,000 Lockheed Martin Corp. $ 108,054,760 2,182,000 Raytheon Co. 139,582,540 1,361,000 United Technologies Corp. 98,631,670 -------------- 346,268,970 -------------- BEVERAGES -- 2.8% 2,133,000 Coca-Cola Co. (The) 125,569,710 1,624,000 PepsiCo, Inc. 111,292,720 -------------- 236,862,430 -------------- BIOTECHNOLOGY -- 2.7% 498,883 Genentech, Inc.(1) 34,023,821 1,127,000 Genzyme Corp.(1) 79,284,450 2,249,000 Gilead Sciences, Inc.(1) 116,408,240 -------------- 229,716,511 -------------- CAPITAL MARKETS -- 4.8% 2,573,000 Bank of New York Mellon Corp. (The) 112,002,690 5,369,000 Charles Schwab Corp. (The) 115,970,400 466,000 Goldman Sachs Group, Inc. (The) 89,178,420 1,792,000 Morgan Stanley 87,091,200 -------------- 404,242,710 -------------- CHEMICALS -- 2.6% 473,000 Celanese Corp., Series A 21,166,750 539,000 Johnson Matthey plc ORD 21,441,959 1,136,000 Monsanto Co. 129,526,720 162,000 Syngenta AG ORD 48,406,063 -------------- 220,541,492 -------------- COMMERCIAL SERVICES & SUPPLIES -- 0.4% 1,548,000 Robert Half International Inc. 36,687,600 -------------- COMMUNICATIONS EQUIPMENT -- 6.6% 10,568,000 Cisco Systems Inc.(1) 270,963,520 4,249,000 Corning Inc. 113,490,790 1,915,000 Nokia Oyj ADR 57,584,050 1,425,000 QUALCOMM Inc. 61,545,750 413,000 Research In Motion Ltd.(1) 50,233,190 -------------- 553,817,300 -------------- COMPUTERS & PERIPHERALS -- 4.5% 1,095,000 Apple Inc.(1) 190,475,250 3,941,000 Hewlett-Packard Co. 182,665,350 -------------- 373,140,600 -------------- CONSTRUCTION & ENGINEERING -- 1.0% 543,000 Fluor Corp. 83,008,410 -------------- Shares Value CONSUMER FINANCE -- 0.5% 2,340,000 Discover Financial Services $ 42,611,400 -------------- DIVERSIFIED FINANCIAL SERVICES -- 1.6% 514,000 Bank of America Corp. 19,295,560 11,277 CME Group Inc. 5,158,664 298,000 Deutsche Boerse AG ORD 43,848,725 1,398,000 JPMorgan Chase & Co. 66,614,700 -------------- 134,917,649 -------------- ELECTRICAL EQUIPMENT -- 2.9% 2,350,000 ABB Ltd. ORD 72,237,884 3,298,000 Emerson Electric Co. 172,353,480 -------------- 244,591,364 -------------- ENERGY EQUIPMENT & SERVICES -- 3.5% 706,000 National Oilwell Varco, Inc.(1) 48,325,700 951,000 Schlumberger Ltd. 95,623,050 1,025,000 Transocean Inc.(1) 151,146,500 -------------- 295,095,250 -------------- FOOD & STAPLES RETAILING -- 2.7% 997,000 Costco Wholesale Corp. 71,036,250 2,635,000 Wal-Mart Stores, Inc. 152,777,300 -------------- 223,813,550 -------------- FOOD PRODUCTS -- 2.4% 571,000 Archer-Daniels-Midland Co. 25,158,260 276,000 Nestle SA ORD 132,430,972 1,334,000 Unilever N.V. CVA 44,999,448 -------------- 202,588,680 -------------- HEALTH CARE EQUIPMENT & SUPPLIES -- 3.4% 1,430,000 Baxter International Inc. 89,117,600 1,035,000 Becton, Dickinson & Co. 92,529,000 2,071,000 Medtronic, Inc. 100,816,280 -------------- 282,462,880 -------------- HEALTH CARE PROVIDERS & SERVICES -- 1.9% 1,727,919 Express Scripts, Inc.(1) 120,988,888 821,165 Medco Health Solutions Inc.(1) 40,680,514 -------------- 161,669,402 -------------- HOTELS, RESTAURANTS & LEISURE -- 2.8% 2,482,000 McDonald's Corp. 147,877,560 2,183,000 Yum! Brands, Inc. 88,804,440 -------------- 236,682,000 -------------- HOUSEHOLD PRODUCTS -- 1.7% 1,437,000 Colgate-Palmolive Co. 101,595,900 621,000 Procter & Gamble Co. (The) 41,638,050 -------------- 143,233,950 -------------- - ------ 9 Ultra Shares Value INDUSTRIAL CONGLOMERATES -- 0.7% 929,000 Textron Inc. $ 56,678,290 -------------- INSURANCE -- 1.2% 1,460,000 Aflac Inc. 97,338,200 -------------- INTERNET SOFTWARE & SERVICES -- 1.9% 273,000 Google Inc. Cl A(1) 156,781,170 -------------- IT SERVICES -- 3.6% 2,013,000 Accenture Ltd. Cl A 75,588,150 1,334,000 International Business Machines Corp. 161,013,800 2,946,000 Western Union Co. (The) 67,758,000 -------------- 304,359,950 -------------- LIFE SCIENCES TOOLS & SERVICES -- 0.8% 1,128,000 Thermo Fisher Scientific Inc.(1) 65,277,360 -------------- MACHINERY -- 3.2% 1,277,000 Caterpillar Inc. 104,560,760 1,010,000 Deere & Co. 84,910,700 244,000 Eaton Corp. 21,432,960 407,000 Illinois Tool Works Inc. 21,282,030 443,195 Parker-Hannifin Corp. 35,389,121 -------------- 267,575,571 -------------- MEDIA -- 1.1% 1,331,000 Viacom Inc. Cl B(1) 51,163,640 1,321,000 Walt Disney Co. (The) 42,840,030 -------------- 94,003,670 -------------- METALS & MINING -- 2.4% 549,000 Alcoa Inc. 19,094,220 1,140,000 BHP Billiton Ltd. ORD 45,448,324 852,000 Cia Vale do Rio Doce ADR 33,296,160 495,000 Freeport-McMoRan Copper & Gold, Inc. 56,306,249 409,000 Rio Tinto plc ORD 48,087,253 -------------- 202,232,206 -------------- MULTILINE RETAIL -- 2.4% 623,000 J.C. Penney Co., Inc. 26,477,500 1,232,000 Kohl's Corp.(1) 60,183,200 2,055,000 Nordstrom, Inc. 72,459,300 800,000 Target Corp. 42,504,000 -------------- 201,624,000 -------------- OIL, GAS & CONSUMABLE FUELS -- 6.8% 479,000 Apache Corp. 64,511,720 666,000 Chevron Corp. 64,035,900 331,000 EOG Resources Inc. 43,188,880 Shares Value 456,000 Exxon Mobil Corp. $ 42,439,920 643,000 Hess Corp. 68,286,600 882,000 Noble Energy Inc. 76,734,000 771,000 Occidental Petroleum Corp. 64,154,910 447,000 Range Resources Corporation 29,671,860 1,880,000 XTO Energy Inc. 116,296,800 -------------- 569,320,590 -------------- PHARMACEUTICALS -- 2.7% 1,592,000 Abbott Laboratories 83,978,000 1,288,000 Johnson & Johnson 86,411,920 1,451,000 Merck & Co., Inc. 55,196,040 -------------- 225,585,960 -------------- ROAD & RAIL -- 1.9% 1,122,000 Union Pacific Corp. 162,903,180 -------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 6.8% 2,279,000 Applied Materials, Inc. 42,526,140 2,338,000 ASML Holding N.V. ORD 66,927,498 10,389,000 Intel Corp. 231,259,140 2,069,000 MEMC Electronic Materials Inc.(1) 130,284,930 1,360,000 Microchip Technology Inc.(2) 49,980,000 1,488,865 Varian Semiconductor Equipment Associates, Inc.(1) 54,537,125 -------------- 575,514,833 -------------- SOFTWARE -- 5.3% 11,532,000 Microsoft Corporation 328,892,640 5,398,000 Oracle Corp.(1) 112,548,300 -------------- 441,440,940 -------------- SPECIALTY RETAIL -- 2.2% 2,195,000 Home Depot, Inc. (The) 63,216,000 1,897,000 Staples, Inc. 41,164,900 2,470,000 TJX Companies, Inc. (The) 79,583,400 -------------- 183,964,300 -------------- TEXTILES, APPAREL & LUXURY GOODS -- 0.8% 1,058,000 NIKE, Inc. Cl B 70,674,400 -------------- TOBACCO -- 1.3% 2,218,000 Philip Morris International Inc.(1) 113,184,540 -------------- TRADING COMPANIES & DISTRIBUTORS -- 0.3% 250,000 Grainger (W.W.), Inc. 21,677,500 -------------- TOTAL COMMON STOCKS (Cost $7,229,458,047) 8,262,088,808 -------------- - ------ 10 Ultra Value Temporary Cash Investments -- 2.5% Repurchase Agreement, Goldman Sachs Group, Inc. (The), (collateralized by various U.S. Treasury obligations, 5.50%, 8/15/28, valued at 206,066,707), in a joint trading account at 1.90%, dated 4/30/08, due 5/1/08 (Delivery value $202,210,672) $ 202,200,000 Repurchase Agreement, Morgan Stanley Group, Inc., (collateralized by various U.S. Treasury obligations, 7.875% - -- 8.75%, 8/15/20-2/15/21, valued at 8,464,998), in a joint trading account at 1.90%, dated 4/30/08, due 5/1/08 (Delivery value $8,300,438) 8,300,000 -------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $210,500,000) 210,500,000 -------------- Temporary Cash Investments -- Securities Lending Collateral(3) -- 0.1% Repurchase Agreement, Barclays Capital Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.98%, dated 4/30/08, due 5/1/08 (Delivery value $1,289,031) 1,288,960 Repurchase Agreement, BNP Paribas Securities Corp., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.99%, dated 4/30/08, due 5/1/08 (Delivery value $1,400,077) 1,400,000 Value Repurchase Agreement, Deutsche Bank Securities Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $1,400,077) $ 1,400,000 Repurchase Agreement, Lehman Brothers Inc. / Lehman Brothers Commercial Paper Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 2.39%, dated 4/30/08, due 5/1/08 (Delivery value $1,400,093) 1,400,000 Repurchase Agreement, Morgan Stanley & Co. Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $1,400,077) 1,400,000 -------------- TOTAL TEMPORARY CASH INVESTMENTS -- SECURITIES LENDING COLLATERAL (Cost $6,888,960) 6,888,960 -------------- TOTAL INVESTMENT SECURITIES -- 100.9% (Cost $7,446,847,007) 8,479,477,768 -------------- OTHER ASSETS AND LIABILITIES -- (0.9)% (73,264,112) -------------- TOTAL NET ASSETS -- 100.0% $8,406,213,656 ============== Forward Foreign Currency Exchange Contracts Unrealized Gain Contracts to Sell Settlement Date Value (Loss) 25,593,000 AUD for USD 5/30/08 $ 24,049,240 $(121,065) 129,540,000 CHF for USD 5/30/08 125,116,071 342,754 49,831,845 Euro for USD 5/30/08 77,730,772 152,914 24,654,532 GBP for USD 5/30/08 48,944,914 179,836 ------------ ---------- $275,840,997 $ 554,439 ============ ========== (Value on Settlement Date $276,395,436) - ------ 11 Ultra Notes to Schedule of Investments ADR = American Depositary Receipt AUD = Australian Dollar CHF = Swiss Franc CVA = Certificaten Van Aandelen GBP = British Pound ORD = Foreign Ordinary Share USD = United States Dollar (1) Non-income producing. (2) Security, or a portion thereof, was on loan as of April 30, 2008. (3) Investments represent purchases made by the lending agent with cash collateral received through securities lending transactions. See Notes to Financial Statements. - ------ 12 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) ASSETS Investment securities, at value (cost of $7,439,958,047) -- including $6,706,471 of securities on loan $8,472,588,808 Investments made with cash collateral received for securities on loan, at value (cost of $6,888,960) 6,888,960 -------------- Total investment securities, at value (cost of $7,446,847,007) 8,479,477,768 Receivable for investments sold 325,020,906 Receivable for forward foreign currency exchange contracts 675,504 Dividends and interest receivable 6,164,320 -------------- 8,811,338,498 -------------- LIABILITIES Disbursements in excess of demand deposit cash 7,584,356 Payable for collateral received for securities on loan 6,888,960 Payable for investments purchased 383,697,865 Payable for capital shares redeemed 3,826 Payable for forward foreign currency exchange contracts 121,065 Accrued management fees 6,791,843 Distribution fees payable 996 Service fees (and distribution fees -- A Class and R Class) payable 35,931 -------------- 405,124,842 -------------- NET ASSETS $8,406,213,656 ============== See Notes to Financial Statements. - ------ 13 APRIL 30, 2008 (UNAUDITED) NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $6,636,334,241 Undistributed net investment income 20,147,377 Undistributed net realized gain on investment and foreign currency transactions 716,569,025 Net unrealized appreciation on investments and translation of assets and liabilities in foreign currencies 1,033,163,013 -------------- $8,406,213,656 ============== INVESTOR CLASS, $0.01 PAR VALUE Net assets $8,125,897,590 Shares outstanding 360,113,427 Net asset value per share $22.56 INSTITUTIONAL CLASS, $0.01 PAR VALUE Net assets $111,174,317 Shares outstanding 4,824,915 Net asset value per share $23.04 A CLASS, $0.01 PAR VALUE Net assets $162,044,910 Shares outstanding 7,378,248 Net asset value per share $21.96 Maximum offering price (net asset value divided by 0.9425) $23.30 B CLASS, $0.01 PAR VALUE Net assets $43,897 Shares outstanding 1,958 Net asset value per share $22.42 C CLASS, $0.01 PAR VALUE Net assets $1,582,561 Shares outstanding 76,368 Net asset value per share $20.72 R CLASS, $0.01 PAR VALUE Net assets $5,470,381 Shares outstanding 249,735 Net asset value per share $21.90 See Notes to Financial Statements. - ------ 14 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) INVESTMENT INCOME (LOSS) INCOME: Dividends (net of foreign taxes withheld of $1,001,963) $ 58,765,558 Interest 2,962,045 Securities lending, net 1,200,233 ---------------- 62,927,836 ---------------- EXPENSES: Management fees 44,284,993 Distribution fees: B Class 154 C Class 6,649 Service fees: B Class 51 C Class 2,216 Distribution and service fees: A Class 229,243 R Class 14,096 Directors' fees and expenses 106,559 Other expenses 11,711 ---------------- 44,655,672 ---------------- NET INVESTMENT INCOME (LOSS) 18,272,164 ---------------- REALIZED AND UNREALIZED GAIN (LOSS) Net realized gain (loss) on investment and foreign currency transactions 728,695,749 Change in net unrealized appreciation (depreciation) on investments and translation of assets and liabilities in foreign currencies (1,841,590,735) ---------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (1,112,894,986) ---------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(1,094,622,822) ================ See Notes to Financial Statements. - ------ 15 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Increase (Decrease) in Net Assets 2008 2007 OPERATIONS Net investment income (loss) $ 18,272,164 $ (4,015,646) Net realized gain (loss) 728,695,749 3,112,565,031 Change in net unrealized appreciation (depreciation) (1,841,590,735) (479,633,923) --------------- --------------- Net increase (decrease) in net assets resulting from operations (1,094,622,822) 2,628,915,462 --------------- --------------- DISTRIBUTIONS TO SHAREHOLDERS From net realized gains: Investor Class (2,312,270,157) (903,904,830) Institutional Class (65,091,994) (69,893,181) A Class (50,919,711) (26,545,325) B Class (11,669) -- C Class (533,319) (210,990) R Class (1,501,522) (578,901) --------------- --------------- Decrease in net assets from distributions (2,430,328,372) (1,001,133,227) --------------- --------------- CAPITAL SHARE TRANSACTIONS Net increase (decrease) in net assets from capital share transactions 1,297,028,370 (5,966,539,859) --------------- --------------- NET INCREASE (DECREASE) IN NET ASSETS (2,227,922,824) (4,338,757,624) NET ASSETS Beginning of period 10,634,136,480 14,972,894,104 --------------- --------------- End of period $ 8,406,213,656 $10,634,136,480 =============== =============== Undistributed net investment income $20,147,377 $1,874,213 =============== =============== See Notes to Financial Statements. - ------ 16 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. Ultra Fund (the fund) is one fund in a series issued by the corporation. The fund is diversified under the 1940 Act. The fund's investment objective is to seek long-term capital growth. The fund pursues this objective by investing primarily in equity securities of large companies, but may invest in companies of any size. The following is a summary of the fund's significant accounting policies. MULTIPLE CLASS -- The fund is authorized to issue the Investor Class, the Institutional Class, the A Class, the B Class, the C Class and the R Class. The A Class may incur an initial sales charge. The A Class, the B Class, and the C Class may be subject to a contingent deferred sales charge. The share classes differ principally in their respective sales charges and distribution and shareholder servicing expenses and arrangements. All shares of the fund represent an equal pro rata interest in the net assets of the class to which such shares belong, and have identical voting, dividend, liquidation and other rights and the same terms and conditions, except for class specific expenses and exclusive rights to vote on matters affecting only individual classes. Income, non-class specific expenses, and realized and unrealized capital gains and losses of the fund are allocated to each class of shares based on their relative net assets. Sale of the B Class commenced on September 28, 2007. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Discount notes may be valued through a commercial pricing service or at amortized cost, which approximates fair value. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the fund determines that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the fund to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. SECURITIES ON LOAN -- The fund may lend portfolio securities through its lending agent to certain approved borrowers in order to earn additional income. The income earned, net of any rebates or fees, is included in the Statement of Operations. The fund continues to recognize any gain or loss in the market price of the securities loaned and records any interest earned or dividends declared. - ------ 17 FOREIGN CURRENCY TRANSACTIONS -- All assets and liabilities initially expressed in foreign currencies are translated into U.S. dollars at prevailing exchange rates at period end. Purchases and sales of investment securities, dividend and interest income, and certain expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. For assets and liabilities, other than investments in securities, net realized and unrealized gains and losses from foreign currency translations arise from changes in currency exchange rates. Net realized and unrealized foreign currency exchange gains or losses occurring during the holding period of investment securities are a component of realized gain (loss) on investment transactions and unrealized appreciation (depreciation) on investments, respectively. Certain countries may impose taxes on the contract amount of purchases and sales of foreign currency contracts in their currency. The fund records the foreign tax expense, if any, as a reduction to the net realized gain (loss) on foreign currency transactions. FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS -- The fund may enter into forward foreign currency exchange contracts to facilitate transactions of securities denominated in a foreign currency or to hedge the fund's exposure to foreign currency exchange rate fluctuations. The net U.S. dollar value of foreign currency underlying all contractual commitments held by the fund and the resulting unrealized appreciation or depreciation are determined daily using prevailing exchange rates. The fund bears the risk of an unfavorable change in the foreign currency exchange rate underlying the forward contract. Additionally, losses may arise if the counterparties do not perform under the contract terms. REPURCHASE AGREEMENTS -- The fund may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. The fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable the fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to the fund under each repurchase agreement. JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, the fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. INCOME TAX STATUS -- It is the fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The fund is no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the fund. In addition, in the normal course of business, the fund enters into contracts that provide general indemnifications. The fund's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the fund. The risk of material loss from such claims is considered by management to be remote. USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. - ------ 18 2. FEES AND TRANSACTIONS WITH RELATED PARTIES MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the fund with investment advisory and management services in exchange for a single, unified management fee (the fee) per class. The Agreement provides that all expenses of the fund, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of each specific class of shares of the fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula takes into account all of the investment advisor's assets under management in the fund's investment strategy (strategy assets) to calculate the appropriate fee rate for the fund. The strategy assets include the fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule ranges from 0.80% to 1.00% for the Investor Class, A Class, B Class, C Class and R Class. The Institutional Class is 0.20% less at each point within the range. The effective annual management fee for each class of the fund for the six months ended April 30, 2008 was 0.99% for the Investor Class, A Class, B Class, C Class and R Class, and 0.79% for the Institutional Class. DISTRIBUTION AND SERVICE FEES -- The Board of Directors has adopted a separate Master Distribution and Individual Shareholder Services Plan for each of the A Class, B Class, C Class and R Class (collectively the plans), pursuant to Rule 12b-1 of the 1940 Act. The plans provide that the A Class will pay American Century Investment Services, Inc. (ACIS) an annual distribution and service fee of 0.25%. The plans provide that the B Class and the C Class will each pay ACIS an annual distribution fee of 0.75% and service fee of 0.25%. The plans provide that the R Class will pay ACIS an annual distribution and service fee of 0.50%. The fees are computed and accrued daily based on each class's daily net assets and paid monthly in arrears. The distribution fee provides compensation for expenses incurred in connection with distributing shares of the classes including, but not limited to, payments to brokers, dealers, and financial institutions that have entered into sales agreements with respect to shares of the fund. The service fee provides compensation for individual shareholder services rendered by broker/dealers or other independent financial intermediaries. Fees incurred under the plans during the six months ended April 30, 2008, are detailed in the Statement of Operations. RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, ACIS, and the corporation's transfer agent, American Century Services, LLC. The fund is eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. The fund has a securities lending agreement with JPMorgan Chase Bank (JPMCB). Prior to December 12, 2007, the fund had a bank line of credit agreement with JPMCB. JPMCB is a custodian of the fund and a wholly owned subsidiary of JPM. 3. INVESTMENT TRANSACTIONS Purchases and sales of investment securities, excluding short-term investments, for the six months ended April 30, 2008, were $6,222,158,799 and $7,339,726,134, respectively. - ------ 19 4. CAPITAL SHARE TRANSACTIONS Transactions in shares of the fund were as follows: Six months ended April 30, 2008 Year ended October 31, 2007(1) Shares Amount Shares Amount INVESTOR CLASS/SHARES AUTHORIZED 3,500,000,000 3,500,000,000 ============= ============= Sold 9,788,489 $ 244,018,771 15,640,310 $ 449,268,460 Issued in reinvestment of distributions 91,021,431 2,229,114,850 31,578,213 862,400,995 Redeemed (41,353,602) (1,053,852,767) (218,773,176) (6,268,934,963) ------------- --------------- ------------- ---------------- 59,456,318 1,419,280,854 (171,554,653) (4,957,265,508) ------------- --------------- ------------- ---------------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 200,000,000 200,000,000 ============= ============= Sold 1,138,670 28,471,102 5,102,384 149,551,045 Issued in reinvestment of distributions 2,567,071 64,151,093 2,452,199 67,876,857 Redeemed (8,445,238) (218,091,699) (35,145,354) (1,017,687,602) ------------- --------------- ------------- ---------------- (4,739,497) (125,469,504) (27,590,771) (800,259,700) ------------- --------------- ------------- ---------------- A CLASS/SHARES AUTHORIZED 100,000,000 100,000,000 ============= ============= Sold 1,018,371 24,625,139 1,553,608 44,553,790 Issued in reinvestment of distributions 2,076,111 49,536,018 961,764 25,823,362 Redeemed (2,880,008) (72,870,470) (9,767,093) (274,240,889) ------------- --------------- ------------- ---------------- 214,474 1,290,687 (7,251,721) (203,863,737) ------------- --------------- ------------- ---------------- B CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 ============= ============= Sold 772 24,250 790 25,000 Issued in reinvestment of distributions 478 11,669 -- -- Redeemed (82) (1,808) -- -- ------------- --------------- ------------- ---------------- 1,168 34,111 790 25,000 ------------- --------------- ------------- ---------------- C CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 ============= ============= Sold 15,284 334,603 7,068 191,037 Issued in reinvestment of distributions 22,734 513,343 7,494 194,552 Redeemed (29,154) (653,464) (69,636) (1,880,114) ------------- --------------- ------------- ---------------- 8,864 194,482 (55,074) (1,494,525) ------------- --------------- ------------- ---------------- R CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 ============= ============= Sold 77,064 1,926,896 81,270 2,326,954 Issued in reinvestment of distributions 56,879 1,354,849 20,532 551,893 Redeemed (66,225) (1,584,005) (236,741) (6,560,236) ------------- --------------- ------------- ---------------- 67,718 1,697,740 (134,939) (3,681,389) ------------- --------------- ------------- ---------------- Net increase (decrease) 55,009,045 $ 1,297,028,370 (206,586,368) $(5,966,539,859) ============= =============== ============= ================ (1) September 28, 2007 (commencement of sale) through October 31, 2007 for the B Class. 5. SECURITIES LENDING As of April 30, 2008, securities in the fund valued at $6,706,471 were on loan through the lending agent, JPMCB, to certain approved borrowers. JPMCB receives and maintains collateral in the form of cash and/or acceptable securities as approved by ACIM. Cash collateral is invested in authorized investments by the lending agent in a pooled account. The value of cash collateral received at period end is disclosed in the Statement of Assets and Liabilities and investments made with the cash by the lending agent are listed in the Schedule of Investments. Any deficiencies or excess of collateral must be delivered or transferred by the member firms no later than the close of business on the next business day. The total market value of all collateral received, at this date, was $6,888,960. The fund's risks in securities lending are that the borrower may not provide additional collateral when required or return the securities when due. If the borrower defaults, receipt of the collateral by the fund may be delayed or limited. - ------ 20 6. BANK LINE OF CREDIT Effective December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, has a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The fund may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The fund did not borrow from the line during the six months ended April 30, 2008. 7. RISK FACTORS There are certain risks involved in investing in foreign securities. These risks include those resulting from future adverse political, social, and economic developments, fluctuations in currency exchange rates, the possible imposition of exchange controls, and other foreign laws or restrictions. 8. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: Federal tax cost of investments $7,459,343,269 ============== Gross tax appreciation of investments $1,229,408,651 Gross tax depreciation of investments (209,274,152) -------------- Net tax appreciation (depreciation) of investments $1,020,134,499 ============== The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. 9. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 21 FINANCIAL HIGHLIGHTS Ultra Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $33.48 $28.55 $29.02 $27.17 $26.01 $21.83 ------ ------ ------ ------ ------ ------ Income From Investment Operations Net Investment Income (Loss)(2) 0.05 (0.01) (0.06) 0.02 (0.05) (0.02) Net Realized and Unrealized Gain (Loss) (3.03) 6.95 (0.37) 1.83 1.21 4.26 ------ ------ ------ ------ ------ ------ Total From Investment Operations (2.98) 6.94 (0.43) 1.85 1.16 4.24 ------ ------ ------ ------ ------ ------ Distributions From Net Investment Income -- -- (0.04) -- -- (0.06) From Net Realized Gains (7.94) (2.01) -- -- -- -- ------ ------ ------ ------ ------ ------ Total Distributions (7.94) (2.01) (0.04) -- -- (0.06) ------ ------ ------ ------ ------ ------ Net Asset Value, End of Period $22.56 $33.48 $28.55 $29.02 $27.17 $26.01 ====== ====== ====== ====== ====== ====== TOTAL RETURN(3) (10.73)% 25.89% (1.51)% 6.81% 4.46% 19.50% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.99%(4) 0.99% 0.99% 0.99% 0.99% 1.00% Ratio of Net Investment Income (Loss) to Average Net Assets 0.41%(4) (0.04)% (0.15)% 0.09% (0.20)% (0.09)% Portfolio Turnover Rate 70% 93% 62% 33% 34% 82% Net Assets, End of Period (in millions) $8,126 $10,066 $13,482 $18,904 $20,708 $21,341 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset value to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 22 Ultra Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $33.98 $28.90 $29.38 $27.44 $26.22 $22.02 ------ ------ ------ ------ ------ ------ Income From Investment Operations Net Investment Income (Loss)(2) 0.09 0.05 --(3) 0.07 --(3) 0.02 Net Realized and Unrealized Gain (Loss) (3.09) 7.04 (0.38) 1.87 1.22 4.29 ------ ------ ------ ------ ------ ------ Total From Investment Operations (3.00) 7.09 (0.38) 1.94 1.22 4.31 ------ ------ ------ ------ ------ ------ Distributions From Net Investment Income -- -- (0.10) -- -- (0.11) From Net Realized Gains (7.94) (2.01) -- -- -- -- ------ ------ ------ ------ ------ ------ Total Distributions (7.94) (2.01) (0.10) -- -- (0.11) ------ ------ ------ ------ ------ ------ Net Asset Value, End of Period $23.04 $33.98 $28.90 $29.38 $27.44 $26.22 ====== ====== ====== ====== ====== ====== TOTAL RETURN(4) (10.64)% 26.14% (1.33)% 7.07% 4.65% 19.66% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.79%(5) 0.79% 0.79% 0.79% 0.79% 0.80% Ratio of Net Investment Income (Loss) to Average Net Assets 0.61%(5) 0.16% 0.05% 0.29% 0.00% 0.11% Portfolio Turnover Rate 70% 93% 62% 33% 34% 82% Net Assets, End of Period (in thousands) $111,174 $325,035 $1,073,767 $1,460,343 $1,055,145 $822,333 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Per-share amount was less than $0.005. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset value to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 23 Ultra A Class(1) For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(2) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $32.83 $28.11 $28.61 $26.85 $25.77 $21.62 ------ ------ ------ ------ ------ ------ Income From Investment Operations Net Investment Income (Loss)(3) 0.02 (0.08) (0.13) (0.05) (0.12) (0.08) Net Realized and Unrealized Gain (Loss) (2.95) 6.81 (0.37) 1.81 1.20 4.24 ------ ------ ------ ------ ------ ------ Total From Investment Operations (2.93) 6.73 (0.50) 1.76 1.08 4.16 ------ ------ ------ ------ ------ ------ Distributions From Net Investment Income -- -- -- -- -- (0.01) From Net Realized Gains (7.94) (2.01) -- -- -- -- ------ ------ ------ ------ ------ ------ Total Distributions (7.94) (2.01) -- -- -- (0.01) ------ ------ ------ ------ ------ ------ Net Asset Value, End of Period $21.96 $32.83 $28.11 $28.61 $26.85 $25.77 ====== ====== ====== ====== ====== ====== TOTAL RETURN(4) (10.83)% 25.56% (1.75)% 6.55% 4.19% 19.24% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.24%(5) 1.24% 1.24% 1.24% 1.24% 1.25% Ratio of Net Investment Income (Loss) to Average Net Assets 0.16%(5) (0.29)% (0.40)% (0.16)% (0.45)% (0.34)% Portfolio Turnover Rate 70% 93% 62% 33% 34% 82% Net Assets, End of Period (in thousands) $162,045 $235,217 $405,173 $639,792 $738,032 $643,144 (1) Prior to September 4, 2007, the A Class was referred to as the Advisor Class. (2) Six months ended April 30, 2008 (unaudited). (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset value to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 24 Ultra B Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $33.45 $31.63 ------ ------ Income From Investment Operations Net Investment Income (Loss)(3) (0.08) (0.04) Net Realized and Unrealized Gain (Loss) (3.01) 1.86 ------ ------ Total From Investment Operations (3.09) 1.82 ------ ------ Distributions From Net Realized Gains (7.94) -- ------ ------ Net Asset Value, End of Period $22.42 $33.45 ====== ====== TOTAL RETURN(4) (11.15)% 5.75% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.99%(5) 1.99%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.59)%(5) (1.53)%(5) Portfolio Turnover Rate 70% 93%(6) Net Assets, End of Period (in thousands) $44 $26 (1) Six months ended April 30, 2008 (unaudited). (2) September 28, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset value to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 25 Ultra C Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $31.54 $27.26 $27.96 $26.44 $25.57 $21.59 ------ ------ ------ ------ ------ ------ Income From Investment Operations Net Investment Income (Loss)(2) (0.07) (0.29) (0.34) (0.26) (0.32) (0.26) Net Realized and Unrealized Gain (Loss) (2.81) 6.58 (0.36) 1.78 1.19 4.24 ------ ------ ------ ------ ------ ------ Total From Investment Operations (2.88) 6.29 (0.70) 1.52 0.87 3.98 ------ ------ ------ ------ ------ ------ Distributions From Net Realized Gains (7.94) (2.01) -- -- -- -- ------ ------ ------ ------ ------ ------ Net Asset Value, End of Period $20.72 $31.54 $27.26 $27.96 $26.44 $25.57 ====== ====== ====== ====== ====== ====== TOTAL RETURN(3) (11.16)% 24.64% (2.50)% 5.75% 3.40% 18.43% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.99%(4) 1.99% 1.99% 1.99% 1.99% 2.00% Ratio of Net Investment Income (Loss) to Average Net Assets (0.59)%(4) (1.04)% (1.15)% (0.91)% (1.20)% (1.09)% Portfolio Turnover Rate 70% 93% 62% 33% 34% 82% Net Assets, End of Period (in thousands) $1,583 $2,129 $3,342 $5,601 $4,836 $2,232 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset value to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 26 Ultra R Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003(2) PER-SHARE DATA Net Asset Value, Beginning of Period $32.80 $28.15 $28.72 $27.01 $25.99 $24.87 ------ ------ ------ ------ ------ ------ Income From Investment Operations Net Investment Income (Loss)(3) (0.01) (0.15) (0.21) (0.12) (0.22) (0.04) Net Realized and Unrealized Gain (Loss) (2.95) 6.81 (0.36) 1.83 1.24 1.16 ------ ------ ------ ------ ------ ------ Total From Investment Operations (2.96) 6.66 (0.57) 1.71 1.02 1.12 ------ ------ ------ ------ ------ ------ Distributions From Net Realized Gains (7.94) (2.01) -- -- -- -- ------ ------ ------ ------ ------ ------ Net Asset Value, End of Period $21.90 $32.80 $28.15 $28.72 $27.01 $25.99 ====== ====== ====== ====== ====== ====== TOTAL RETURN(4) (10.96)% 25.26% (1.98)% 6.33% 3.92% 4.50% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.49%(5) 1.49% 1.49% 1.44%(6) 1.49% 1.50%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.09)%(5) (0.54)% (0.65)% (0.36)%(6) (0.70)% (0.81)%(5) Portfolio Turnover Rate 70% 93% 62% 33% 34% 82%(7) Net Assets, End of Period (in thousands) $5,470 $5,971 $8,922 $8,367 $4,545 $3 (1) Six months ended April 30, 2008 (unaudited). (2) August 29, 2003 (commencement of sale) through October 31, 2003. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset value to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) During the year ended October 31, 2005, the class received a partial reimbursement of its distribution and service fee. Had fees not been reimbursed the ratio of operating expenses to average net assets and ratio of net investment income (loss) to average net assets would have been 1.49% and (0.41)%, respectively. (7) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2003. See Notes to Financial Statements. - ------ 27 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the fund's investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the fund. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The fund's Form N-Q is available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The fund also makes its complete schedule of portfolio holdings for the most recent quarter of its fiscal year available on its website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 28 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 1000® GROWTH INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 1000® VALUE INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 2000® INDEX is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® GROWTH INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 2000® VALUE INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® GROWTH INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL MIDCAP® VALUE INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The S&P 500 INDEX is a market value-weighted index of the stocks of 500 publicly traded U.S. companies chosen for market size, liquidity, and industry group representation that are considered to be leading firms in dominant industries. Each stock's weight in the index is proportionate to its market value. Created by Standard & Poor's, it is considered to be a broad measure of U.S. stock market performance. - ------ 29 NOTES - ------ 30 NOTES - ------ 31 NOTES - ------ 32 [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE. . . . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE. . . . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 INVESTORS USING ADVISORS. . . . . . . . . . . . . . . . . . 1-800-378-9878 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS . .. . . . . . . . . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES. . . . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF. . . . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investments P.O. Box 419200 Kansas City, MO 64141-6200 PRSRT STD U.S. POSTAGE PAID AMERICAN CENTURY COMPANIES American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60502S
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS GROWTH FUND VISTA(SM) FUND PRESIDENT'S LETTER JONATHAN THOMAS [photo of Jonathan Thomas] Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® Growth and Vista funds for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan S. Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns. . . . . . . . . . . . . . . . . . . . . . 2 GROWTH Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings. . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries . . . . . . . . . . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio . . . . . . . . . . . . . . . . . 6 Schedule of Investments. . . . . . . . . . . . . . . . . . . . . . . 7 VISTA Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Portfolio Commentary . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Ten Holdings. . . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Five Industries . . . . . . . . . . . . . . . . . . . . . . . . 13 Types of Investments in Portfolio . . . . . . . . . . . . . . . . . 13 Schedule of Investments. . . . . . . . . . . . . . . . . . . . . . . 14 Shareholder Fee Examples . . . . . . . . . . . . . . . . . . . . . . 17 FINANCIAL STATEMENTS Statement of Assets and Liabilities. . . . . . . . . . . . . . . . . 19 Statement of Operations. . . . . . . . . . . . . . . . . . . . . . . 21 Statement of Changes in Net Assets . . . . . . . . . . . . . . . . . 22 Notes to Financial Statements. . . . . . . . . . . . . . . . . . . . 23 Financial Highlights . . . . . . . . . . . . . . . . . . . . . . . . 29 OTHER INFORMATION Additional Information . . . . . . . . . . . . . . . . . . . . . . . 37 Index Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . 38 The opinions expressed in the Market Perspective and each of the Portfolio Commentaries reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of Chief Investment Officer] By Steve Lurito, Chief Investment Officer, U.S. Growth Equity VOLATILITY UP, STOCKS DOWN The six months ended April 30, 2008 saw stocks produce negative returns as market volatility surged in the wake of the subprime credit crisis. In terms of the economy, tighter credit and the slumping housing market hurt consumer spending and confidence, leading many economists to suggest we're already in recession. Meanwhile, mounting losses hurt the banks, brokers, and other big institutional players important for the functioning of the financial markets. Facing dual economic and financial crises, the Federal Reserve (the Fed) took a series of extraordinary steps, slashing interest rates and acting as a lender of last resort not only for banks, but also major brokers. That helped stocks rebound, with many analysts suggesting that the mid-March buy-out of investment bank Bear Stearns--in a deal arranged by the Fed--put a floor under the market. RETURNS BY SIZE, STYLE MIXED Performance by size and style was mixed (see the accompanying table), reflecting the volatile trading during the period, when corporate earnings estimates were revised down sharply. Looking at returns by sector, energy shares were the only segment to produce positive results during the six months. At the other end of the spectrum, credit-related losses took a big bite out of earnings for financials stocks, which performed worst. Consumer discretionary shares also lagged badly, as did information technology stocks, which suffered from poor pricing and demand trends for chips and some consumer-related tech goods. OPPORTUNITY AMID VOLATILITY Despite the uncertainty surrounding the economy, we think growth-oriented stocks can perform well relative to value as proven earnings growth becomes scarce during economic slowdowns. And while we don't see an end to market volatility anytime soon, we view this dynamic as a natural part of the investing cycle--and one that presents us with opportunities to build positions in what we believe are high-quality companies trading at attractive prices. Indeed, investors should rest assured that we're finding no shortage of companies demonstrating sustained earnings growth and business improvement. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% * Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE Growth Total Returns as of April 30, 2008 Average Annual Returns 6 1 5 10 Since Inception months(1) year years years Inception Date INVESTOR CLASS -6.11% 7.31% 10.82% 3.52% 14.49% 6/30/71(2) RUSSELL 1000 GROWTH INDEX(3) -9.28% -0.23% 9.52% 1.66% N/A(4) -- Institutional Class -6.06% 7.50% 11.03% 3.73% 5.86% 6/16/97 Advisor Class -6.22% 7.06% 10.55% 3.24% 5.89% 6/4/97 R Class -6.37% 6.79% -- -- 8.92% 8/29/03 (1) Total returns for periods less than one year are not annualized. (2) Although the fund's actual inception date was 10/31/58, this inception date corresponds with the investment advisor's implementation of its current investment philosophy and practices. (3) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. Lipper Fund Performance -- Performance data is total return and is preliminary and subject to revision. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (4) Benchmark began 12/29/78. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 3 Growth Growth of $10,000 Over 10 Years $10,000 investment made April 30, 1998
One-Year Returns Over 10 Years Periods ended April 30 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Investor Class 24.48% 32.16% -27.72% -15.05% -16.33% 17.74% 4.99% 13.10% 11.49% 7.31% Russell 1000 Growth Index 26.53% 27.58% -32.25% -20.10% -14.35% 21.65% 0.40% 15.18% 12.25% -0.23% Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 4 PORTFOLIO COMMENTARY Growth Portfolio Managers: Greg Woodhams and Prescott LeGard PERFORMANCE SUMMARY Growth returned -6.11%* during the six months ended April 30, 2008. By comparison, the Russell 1000 Growth Index and Lipper Large-Cap Growth Funds category average returned -9.28% and -10.15%,** respectively. Better measures of the portfolio's performance are its longer-term results compared with the index, which can be seen on page 3. Overall, performance was driven by holdings in the energy sector; materials and consumer staples also made positive contributions. Information technology holdings were the leading detractors. In terms of Growth's performance relative to the Russell 1000 Growth Index, outperformance was driven by stock selection among health care and consumer discretionary stocks; holdings in the consumer staples, financials, and energy sectors were other notable contributors. Stock picks in information technology detracted most from relative results. HEALTH CARE LED CONTRIBUTORS Health care stocks contributed most to the portfolio's return relative to the benchmark. Performance was driven by positioning in the pharmaceutical industry. Growth had no exposure to Merck, and managers eliminated Schering-Plough at the end of 2007 after sizable gains. This helped relative results after both stocks suffered in March from questions about the efficacy of a jointly marketed cholesterol drug. Positioning in health care equipment & supplies firms was another source of relative strength. The leading contributor to return in this space was Becton Dickinson, which benefited from increased usage around the world of its safety devices that reduce accidents and infection among patients and caregivers. CONSUMER DISCRETIONARY HELPED In the consumer discretionary sector, outperformance was a result of stock selection in the specialty retail and internet & catalog retailing segments. It also helped to underweight stocks in the hotels, restaurants & leisure category. Key contributions in the sector came from specialty retailers Urban Outfitters and The TJX Companies. Internet travel portal priceline.com was another leading contributor, helped by the acquisition of overseas vacation properties and growth in its international business. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Apple Inc. 3.4% 4.1% Honeywell International Inc. 2.5% 1.2% QUALCOMM Inc. 2.5% 0.9% Emerson Electric Co. 2.4% 1.9% Becton, Dickinson & Co. 2.3% 2.3% Microsoft Corp. 2.2% 3.7% Apache Corp. 2.2% 2.0% Coca-Cola Co. (The) 2.2% 2.6% BorgWarner, Inc. 2.2% 2.0% Devon Energy Corp. 2.2% 1.8% *All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. **The Lipper Large-Cap Growth Funds category average returns for the one-, five- and 10-year periods ended April 30, 2008 were 1.73%, 9.15% and 2.79%, respectively. - ------ 5 Growth OTHER KEY CONTRIBUTORS Three of the five largest contributors to portfolio performance were oil & gas exploration and production firms Devon Energy, Apache, and XTO Energy. These companies benefited from surging oil prices and reserve growth in the U.S. and overseas. These shares also saw demand from investors who wanted exposure to the energy sector but preferred to avoid the big, integrated firms that are less closely tied to the price of oil and are seeing declining margins in their refining businesses. IT, INDUSTRIALS DETRACTED Stock selection among information technology stocks detracted most from relative return, led by holdings in the software, internet software & services, and IT services industries. Indeed, the sector was home to the five largest individual detractors from relative performance, led by enterprise software firm VMWare. This overweight position was eliminated after the firm gave a surprisingly poor profit forecast. The number-two detractor was IBM, which reported good results and bought back stock during the period. The portfolio had no exposure to the stock. With the exception of utilities (a tiny portion of the fund and index), industrials was the only other sector to detract from relative performance, as it hurt to be significantly underweight the road & rail and air freight industries. The leading detractor in the sector was an overweight position in Continental Airlines, as investors worried about the effects of rising fuel costs and a slowing economy. We eliminated the position during the period. OUTLOOK The investment process focuses on large companies exhibiting sustainable improvement in their businesses. We believe that owning such companies will generate outperformance over time versus the Russell 1000 Growth Index and the other funds in the large-growth peer group. As a result, the portfolio's sector and industry selection are primarily a result of identifying what we believe to be superior individual securities. As of April 30, 2008, we found opportunity in the health care sector, the portfolio's largest overweight position. The most notable sector underweight was in information technology shares. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Health Care Equipment & Supplies 8.2% 8.8% Communications Equipment 8.1% 7.2% Aerospace & Defense 6.4% 3.1% Oil, Gas & Consumable Fuels 6.4% 7.1% Semiconductors & Semiconductor Equipment 5.7% 3.4% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 93.1% 95.1% Foreign Common Stocks(1) 6.3% 4.3% TOTAL COMMON STOCKS 99.4% 99.4% Temporary Cash Investments 0.5% 0.7% Other Assets and Liabilities(2) 0.1% (0.1)% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. (2) Includes securities lending collateral and other assets and liabilities. - ------ 6 SCHEDULE OF INVESTMENTS Growth APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 99.4% AEROSPACE & DEFENSE -- 6.4% 1,802,100 Honeywell International Inc. $ 107,044,740 1,276,300 Raytheon Co. 81,644,911 1,135,800 United Technologies Corp. 82,311,426 ------------- 271,001,077 ------------- AUTO COMPONENTS -- 2.2% 1,843,400 BorgWarner, Inc. 90,603,110 ------------- BEVERAGES -- 3.9% 1,579,000 Coca-Cola Co. (The) 92,955,730 1,064,500 PepsiCo, Inc. 72,950,185 ------------- 165,905,915 ------------- BIOTECHNOLOGY -- 1.4% 277,800 Genentech, Inc.(1) 18,945,960 788,100 Gilead Sciences, Inc.(1) 40,792,056 ------------- 59,738,016 ------------- BUILDING PRODUCTS -- 0.3% 615,300 Masco Corp. 11,204,613 ------------- CAPITAL MARKETS -- 3.6% 2,656,700 Invesco Ltd. 68,144,355 586,400 Northern Trust Corp. 43,458,104 1,217,000 Waddell & Reed Financial, Inc. Cl A 41,207,620 ------------- 152,810,079 ------------- CHEMICALS -- 1.7% 639,400 Monsanto Co. 72,904,388 ------------- COMMUNICATIONS EQUIPMENT -- 8.1% 1,761,700 ADC Telecommunications, Inc.(1) 24,699,034 466,700 Ciena Corp.(1) 15,779,127 2,549,300 Cisco Systems Inc.(1) 65,364,052 2,582,000 Corning Inc. 68,965,220 3,020,700 JDS Uniphase Corp.(1) 43,226,217 2,459,800 QUALCOMM Inc. 106,238,769 130,000 Research In Motion Ltd.(1) 15,811,900 ------------- 340,084,319 ------------- COMPUTERS & PERIPHERALS -- 4.6% 817,900 Apple Inc.(1) 142,273,705 2,490,800 Dell Inc.(1) 46,403,604 348,300 EMC Corp.(1) 5,363,820 ------------- 194,041,129 ------------- Shares Value DIVERSIFIED FINANCIAL SERVICES -- 1.2% 53,000 CME Group Inc. $24,244,850 171,700 IntercontinentalExchange Inc.(1) 26,639,255 ------------- 50,884,105 ------------- ELECTRIC UTILITIES -- 0.5% 302,000 FPL Group, Inc. 20,019,580 ------------- ELECTRICAL EQUIPMENT -- 4.1% 1,268,600 Cooper Industries, Ltd. Cl A 53,775,954 1,916,500 Emerson Electric Co. 100,156,290 57,700 First Solar Inc.(1) 16,847,823 ------------- 170,780,067 ------------- ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.8% 3,320,900 Flextronics International Ltd.(1) 34,504,151 ------------- ENERGY EQUIPMENT & SERVICES -- 3.0% 407,600 Helmerich & Payne, Inc. 21,908,500 460,000 Schlumberger Ltd. 46,253,000 399,200 Transocean Inc.(1) 58,866,032 ------------- 127,027,532 ------------- FOOD & STAPLES RETAILING -- 4.0% 1,086,400 Costco Wholesale Corp. 77,406,000 1,543,800 Wal-Mart Stores, Inc. 89,509,524 ------------- 166,915,524 ------------- FOOD PRODUCTS -- 0.8% 68,600 Nestle SA ORD 32,915,814 ------------- HEALTH CARE EQUIPMENT & SUPPLIES -- 8.2% 1,129,000 Baxter International Inc. 70,359,280 1,069,400 Becton, Dickinson & Co. 95,604,360 472,100 C.R. Bard, Inc. 44,457,657 1,088,200 DENTSPLY International Inc. 42,298,334 228,400 Gen-Probe Inc.(1) 12,872,624 192,800 Idexx Laboratories, Inc.(1) 10,256,960 97,200 Intuitive Surgical Inc.(1) 28,116,072 872,000 Medtronic, Inc. 42,448,960 ------------- 346,414,247 ------------- HEALTH CARE PROVIDERS & SERVICES -- 1.0% 358,000 Laboratory Corp. of America Holdings(1) 27,071,960 401,400 VCA Antech Inc.(1) 12,993,318 ------------- 40,065,278 ------------- HOTELS, RESTAURANTS & LEISURE -- 1.3% 1,589,500 Darden Restaurants, Inc. 56,554,410 ------------- - ------ 7 Growth Shares Value HOUSEHOLD DURABLES -- 0.8% 628,500 KB Home(2) $14,141,250 266,400 Mohawk Industries Inc.(1) 20,297,016 ------------- 34,438,266 ------------- HOUSEHOLD PRODUCTS -- 1.3% 803,700 Procter & Gamble Co. (The) 53,888,085 ------------- INDUSTRIAL CONGLOMERATES -- 0.4% 464,100 General Electric Co. 15,176,070 ------------- INSURANCE -- 1.1% 862,300 Chubb Corp. 45,676,031 ------------- INTERNET & CATALOG RETAIL -- 0.6% 175,400 priceline.com Inc.(1) 22,388,056 ------------- INTERNET SOFTWARE & SERVICES -- 0.9% 65,900 Google Inc. Cl A(1) 37,845,711 ------------- IT SERVICES -- 1.2% 267,100 Global Payments Inc. 11,821,846 485,800 Visa Inc. Cl A(1) 40,540,010 ------------- 52,361,856 ------------- LIFE SCIENCES TOOLS & SERVICES -- 2.3% 133,000 Illumina, Inc.(1) 10,359,370 518,700 QIAGEN N.V.(1)(2) 11,520,327 1,324,000 Thermo Fisher Scientific Inc.(1) 76,619,880 ------------- 98,499,577 ------------- MACHINERY -- 3.0% 205,900 Caterpillar Inc. 16,859,092 808,500 Eaton Corp. 71,018,640 388,300 Valmont Industries, Inc. 38,232,018 ------------- 126,109,750 ------------- MEDIA -- 1.9% 2,065,700 Viacom Inc. Cl B(1) 79,405,508 ------------- METALS & MINING -- 1.6% 589,400 Freeport-McMoRan Copper & Gold, Inc. 67,044,250 ------------- MULTILINE RETAIL -- 1.1% 2,112,900 Family Dollar Stores, Inc. 45,216,060 ------------- OIL, GAS & CONSUMABLE FUELS -- 6.4% 692,900 Apache Corp. 93,319,772 798,200 Devon Energy Corp. 90,515,880 84,100 EOG Resources Inc. 10,973,368 1,207,700 XTO Energy Inc. 74,708,322 ------------- 269,517,342 ------------- Shares Value PHARMACEUTICALS -- 3.3% 1,480,200 Allergan, Inc. $83,438,874 822,400 Novo Nordisk AS B Shares ORD(2) 56,697,037 ------------- 140,135,911 ------------- REAL ESTATE INVESTMENT TRUSTS (REITS) -- 0.6% 227,200 Digital Realty Trust Inc. 8,804,000 468,300 Weingarten Realty Investors 17,275,587 ------------- 26,079,587 ------------- ROAD & RAIL -- 0.4% 114,700 Union Pacific Corp. 16,653,293 ------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 5.7% 1,136,500 Altera Corp. 24,184,720 926,000 Applied Materials, Inc. 17,279,160 3,540,700 Intel Corp. 78,815,982 2,075,700 Linear Technology Corp.(2) 72,566,472 308,900 MEMC Electronic Materials Inc.(1) 19,451,433 1,082,300 Xilinx, Inc. 26,808,571 ------------- 239,106,338 ------------- SOFTWARE -- 4.4% 372,200 Electronic Arts Inc.(1) 19,157,134 3,307,000 Microsoft Corp. 94,315,640 1,668,900 Oracle Corp.(1) 34,796,565 524,200 Salesforce.com Inc.(1) 34,979,866 ------------- 183,249,205 ------------- SPECIALTY RETAIL -- 3.8% 711,400 Advance Auto Parts, Inc. 24,671,352 2,229,200 Lowe's Companies, Inc. 56,153,548 502,500 TJX Companies, Inc. (The) 16,190,550 1,884,700 Urban Outfitters Inc.(1) 64,550,975 ------------- 161,566,425 ------------- WIRELESS TELECOMMUNICATION SERVICES -- 1.5% 1,395,400 American Tower Corp. Cl A(1) 60,588,268 ------------- TOTAL COMMON STOCKS (Cost $3,628,643,125) 4,179,318,943 ------------- - ------ 8 Growth Value Temporary Cash Investments -- 0.5% Repurchase Agreement, Bank of America Securities, LLC, (collateralized by various U.S. Treasury obligations, 0.625%, 4/15/13, valued at $20,412,462), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $20,001,067) (Cost $20,000,000) $ 20,000,000 -------------- Temporary Cash Investments - Securities Lending Collateral(3) -- 0.4% Repurchase Agreement, Barclays Capital Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.98%, dated 4/30/08, due 5/1/08 (Delivery value $3,046,616) 3,046,448 Repurchase Agreement, BNP Paribas Securities Corp., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.99%, dated 4/30/08, due 5/1/08 (Delivery value $3,250,180) 3,250,000 Repurchase Agreement, Deutsche Bank Securities Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $3,250,178) 3,250,000 Value Repurchase Agreement, Lehman Brothers Inc. / Lehman Brothers Commercial Paper Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 2.39%, dated 4/30/08, due 5/1/08 (Delivery value $3,250,216) $3,250,000 Repurchase Agreement, Morgan Stanley & Co. Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $3,250,178) 3,250,000 -------------- TOTAL TEMPORARY CASH INVESTMENTS - SECURITIES LENDING COLLATERAL (Cost $16,046,448) 16,046,448 -------------- TOTAL INVESTMENT SECURITIES -- 100.3% (Cost $3,664,689,573) 4,215,365,391 -------------- OTHER ASSETS AND LIABILITIES -- (0.3)% (12,403,979) -------------- TOTAL NET ASSETS -- 100.0% $4,202,961,412 ============== Forward Foreign Currency Exchange Contracts Settlement Unrealized Contracts to Sell Date Value Gain (Loss) 23,577,820 CHF for USD 5/30/08 $22,772,612 $62,385 177,309,440 DKK for USD 5/30/08 37,110,019 19,018 ------------- ------------ $59,882,631 $81,403 ============= ============ (Value on Settlement Date $59,964,034) Notes to Schedule of Investments CHF = Swiss Franc DKK = Danish Krone ORD = Foreign Ordinary Share USD = United States Dollar (1) Non-income producing. (2) Security, or a portion thereof, was on loan as of April 30, 2008. (3) Investments represent purchases made by the lending agent with cash collateral received through securities lending transactions. See Notes to Financial Statements. - ------ 9 PERFORMANCE Vista Total Returns as of April 30, 2008 Average Annual Returns 6 1 5 10 Since Inception months(1) year years years Inception Date INVESTOR CLASS -12.31% 11.11% 18.19% 9.05% 11.02% 11/25/83 RUSSELL MIDCAP GROWTH INDEX(2) -8.44% -1.93% 15.29% 5.75% N/A(3) -- Institutional Class -12.23% 11.32% 18.39% 9.26% 8.03% 11/14/96 Advisor Class -12.44% 10.80% 17.90% 8.79% 6.83% 10/2/96 R Class -12.55% 10.55% -- -- 12.38% 7/29/05 (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (3) Benchmark began 12/31/85. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing special risks, such as political instability and currency fluctuations. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 10 Vista Growth of $10,000 Over 10 Years $10,000 investment made April 30, 1998
One-Year Returns Over 10 Years Periods ended April 30 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Investor Class -15.78% 125.22% -22.00% -15.93% -17.07% 43.43% 2.10% 31.13% 8.17% 11.11% Russell Midcap Growth Index 12.33% 53.02% -29.47% -15.01% -16.67% 36.14% 7.05% 28.27% 11.13% -1.93% Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing special risks, such as political instability and currency fluctuations. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 11 PORTFOLIO COMMENTARY Vista Portfolio Managers: Glenn Fogle and Brad Eixmann In February, David Hollond left the Vista team to focus on the American Century Giftrust, Heritage and VP Capital Appreciation funds. PERFORMANCE SUMMARY Vista returned -12.31%* for the six months ended April 30, 2008, underperforming the -8.44% return of its benchmark, the Russell Midcap Growth Index. As discussed in the Market Perspective on page 2, equity markets generally declined during the reporting period, as the subprime-mortgage-driven credit crisis spread to other areas of the economy, and rising energy and commodity prices increased inflation concerns. In this environment, mid-cap stocks outpaced their large- and small-cap counterparts, and mid-cap growth-oriented shares outperformed mid-cap value stocks. Within the portfolio, effective security selection and an overweight allocation to the materials sector contributed positively to the portfolio's relative performance. But it wasn't enough to overcome the detrimental effect of individual security selection within the energy, information technology, and consumer discretionary sectors and an underweight position in energy. Vista also maintained a significant allocation to foreign holdings. During the reporting period, these holdings detracted from portfolio returns. CONSUMER DISCRETIONARY LAGGED The consumer discretionary group also weighed on Vista's performance. The portfolio has benefited in the past from a stake in the hotels, restaurants and leisure group, where we focused on several casinos and makers of slot machines. During the reporting period, though, this group--including holding Las Vegas Sands--suffered traffic declines and detracted from performance. INDUSTRIALS CONTRIBUTED, BUT CERTAIN HOLDINGS LAGGED Within the industrials sector, the portfolio held an overweight position in machinery company Flowserve. A maker of pumps, seals, and valves to end users in the oil and gas, power, chemicals, and water industries, Flowserve was the largest contributor to portfolio performance for the reporting period as its share price gained 58%. Also in the industrials sector, we maintained an overweight position in the aerospace and defense industry. Holdings within this group have contributed significantly to portfolio gains in the past, benefiting from a replacement cycle and expanding orders Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Owens-Illinois Inc. 5.1% 2.2% Flowserve Corp. 3.8% 1.2% Thermo Fisher Scientific Inc. 3.0% 3.4% Monsanto Co. 2.8% 2.1% SBA Communications Corp. Cl A 2.5% 2.4% MasterCard Inc. Cl A 2.4% 0.9% AGCO Corp. 2.3% 2.5% Medco Health Solutions Inc. 2.2% 2.0% Aflac Inc. 2.2% -- Express Scripts, Inc. 2.2% 2.9% *All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. - ------ 12 Vista in global aviation. But during the reporting period, this group lost ground amid market volatility and investor nervousness. BE Aerospace and Precision Castparts, in particular, declined 19% and 21%, respectively, and detracted from portfolio performance. MATERIALS CONTRIBUTED A higher standard of living in emerging-market countries, lower availability of farmland, and greater global focus on biofuels translated into growing global demand for agriculture. This increased demand in turn led to a corresponding rise in commodities prices that benefited select chemicals companies within the materials sector during the reporting period. Notably, Monsanto--a producer of corn seed--benefited from escalating corn prices. Not a constituent of the benchmark, Monsanto was a substantial contributor to relative performance. Also within the materials sector, agricultural chemicals company Mosaic was a contributor to absolute and relative portfolio returns as the company continued to benefit from secularly higher demand in the fertilizer market. Owens-Illinois--Vista's largest holding--was a meaningful positive contributor to performance, as the packaging giant was one of the rare companies to sharply exceed earnings estimates in the reporting period. For the first quarter of 2008 in particular, the company's earnings more than tripled as it benefited from increased prices, an improved product mix, and manufacturing efficiencies. OUTLOOK Our investment process focuses on medium-sized and smaller companies with accelerating earnings growth rates and share-price momentum. We believe that active investing in such companies will generate outperformance over time compared with the Russell Midcap Growth Index. Despite the volatility and the market's tilt away from momentum-style investing during the course of the reporting period, we find the current environment accommodating to our disciplined, consistent style. Our process of identifying companies with accelerating growth and price momentum continues to identify opportunities, particularly among companies with exposure to commodities in the global economy. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Semiconductors & Semiconductor Equipment 7.9% 6.2% Machinery 7.4% 5.3% Oil, Gas & Consumable Fuels 6.2% -- Chemicals 6.0% 3.8% Specialty Retail 5.2% 5.2% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 83.3% 87.8% Foreign Common Stocks(1) 14.4% 10.1% TOTAL COMMON STOCKS 97.7% 97.9% Temporary Cash Investments 6.0% 2.8% Other Assets and Liabilities (3.7)% (0.7)% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. - ------ 13 SCHEDULE OF INVESTMENTS Vista APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 97.7% AEROSPACE & DEFENSE -- 3.6% 306,000 Alliant Techsystems Inc.(1) $33,586,560 1,489,000 BE Aerospace, Inc.(1) 60,096,040 207,000 Precision Castparts Corp. 24,334,920 -------------- 118,017,520 -------------- AUTO COMPONENTS -- 0.8% 1,706,000 ArvinMeritor, Inc. 25,487,640 -------------- BIOTECHNOLOGY -- 3.3% 585,000 Alexion Pharmaceuticals Inc.(1) 41,172,300 1,211,000 BioMarin Pharmaceutical Inc.(1) 44,153,060 678,000 CSL Ltd. ORD 25,443,942 -------------- 110,769,302 -------------- CAPITAL MARKETS -- 2.0% 168,000 BlackRock, Inc. 33,900,720 408,000 FCStone Group, Inc.(1) 16,899,360 222,000 Northern Trust Corp. 16,452,420 -------------- 67,252,500 -------------- CHEMICALS -- 6.0% 288,000 Intrepid Potash, Inc.(1) 13,677,120 807,000 Monsanto Co. 92,014,140 245,000 Mosaic Co. (The)(1) 30,014,950 208,000 Syngenta AG ORD 62,150,994 -------------- 197,857,204 -------------- COMMERCIAL BANKS -- 0.5% 209,000 Credicorp Ltd. 16,795,240 -------------- COMMERCIAL SERVICES & SUPPLIES -- 1.6% 813,000 FTI Consulting, Inc.(1) 52,032,000 -------------- COMMUNICATIONS EQUIPMENT -- 0.5% 1,191,000 JDS Uniphase Corp.(1) 17,043,210 -------------- COMPUTERS & PERIPHERALS -- 0.6% 122,000 Apple Inc.(1) 21,221,900 -------------- CONSTRUCTION & ENGINEERING -- 3.8% 1,077,000 Foster Wheeler Ltd.(1) 68,594,130 1,541,000 Quanta Services, Inc.(1) 40,898,140 316,000 Shaw Group Inc. (The)(1) 15,616,720 -------------- 125,108,990 -------------- CONTAINERS & PACKAGING -- 5.1% 3,083,000 Owens-Illinois Inc.(1) 170,027,450 -------------- Shares Value DIVERSIFIED CONSUMER SERVICES -- 0.9% 377,000 DeVry Inc. $21,489,000 108,000 ITT Educational Services Inc.(1) 8,279,280 -------------- 29,768,280 -------------- DIVERSIFIED FINANCIAL SERVICES -- 0.2% 142,289 Nasdaq Stock Market, Inc. (The)(1) 5,186,434 -------------- ELECTRICAL EQUIPMENT -- 3.6% 197,000 First Solar Inc.(1) 57,522,030 1,279,000 JA Solar Holdings Co., Ltd. ADR(1) 30,708,790 301,000 Vestas Wind Systems AS ORD(1) 33,050,585 -------------- 121,281,405 -------------- ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.2% 178,982 Molex Inc. 5,079,509 -------------- ENERGY EQUIPMENT & SERVICES -- 4.4% 118,000 Core Laboratories N.V.(1) 14,783,040 566,394 Dresser-Rand Group Inc.(1) 20,713,029 352,000 Helmerich & Payne, Inc. 18,920,000 873,000 Patterson-UTI Energy Inc. 24,391,620 829,000 Weatherford International Ltd.(1) 66,875,430 -------------- 145,683,119 -------------- HEALTH CARE PROVIDERS & SERVICES -- 4.9% 437,000 Community Health Systems Inc.(1) 16,400,610 1,028,866 Express Scripts, Inc.(1) 72,041,197 1,492,000 Medco Health Solutions Inc.(1) 73,913,680 -------------- 162,355,487 -------------- HOTELS, RESTAURANTS & LEISURE -- 0.9% 181,179 Panera Bread Co. Cl A(1) 9,468,415 596,000 WMS Industries Inc.(1) 21,569,240 -------------- 31,037,655 -------------- HOUSEHOLD DURABLES -- 0.5% 453,000 Tupperware Brands Corp. 17,848,200 -------------- INDUSTRIAL CONGLOMERATES -- 1.0% 620,000 McDermott International, Inc.(1) 33,219,600 -------------- INSURANCE -- 2.2% 1,108,000 Aflac Inc. 73,870,360 -------------- INTERNET & CATALOG RETAIL -- 1.0% 257,000 priceline.com Inc.(1) 32,803,480 -------------- 14 - ------ Vista Shares Value INTERNET SOFTWARE & SERVICES -- 1.2% 484,000 Mercadolibre Inc.(1) $24,480,720 469,000 VeriSign, Inc.(1) 16,907,450 -------------- 41,388,170 -------------- IT SERVICES -- 2.4% 281,000 MasterCard Inc. Cl A 78,162,960 -------------- LIFE SCIENCES TOOLS & SERVICES -- 5.1% 198,000 Covance Inc.(1) 16,590,420 362,000 Invitrogen Corp.(1) 33,872,340 825,000 Parexel International Corp.(1) 20,955,000 1,711,000 Thermo Fisher Scientific Inc.(1) 99,015,571 -------------- 170,433,331 -------------- MACHINERY -- 7.4% 1,285,183 AGCO Corp.(1) 77,278,054 335,000 Bucyrus International, Inc. 42,186,550 1,029,000 Flowserve Corp. 127,688,610 -------------- 247,153,214 -------------- METALS & MINING -- 3.1% 330,000 Agnico-Eagle Mines Ltd. 20,608,500 417,000 Cia Siderurgica Nacional SA ADR 17,993,550 207,000 Cleveland-Cliffs Inc. 33,202,800 111,000 Mechel OAO ADR(1) 16,183,800 698,000 Timminco Ltd. ORD(1) 13,523,534 -------------- 101,512,184 -------------- OIL, GAS & CONSUMABLE FUELS -- 6.2% 1,008,000 Alpha Natural Resources, Inc.(1) 49,039,200 615,000 Consol Energy Inc. 49,790,400 270,000 Foundation Coal Holdings, Inc. 16,194,600 708,000 Quicksilver Resources Inc.(1) 29,374,920 765,000 Southwestern Energy Co.(1) 32,367,150 341,000 Ultra Petroleum Corp.(1) 28,326,870 -------------- 205,093,140 -------------- PERSONAL PRODUCTS -- 1.4% 611,000 Avon Products, Inc. 23,841,220 528,000 Herbalife Ltd. 23,115,840 -------------- 46,957,060 -------------- ROAD & RAIL -- 2.6% 679,000 CSX Corp. 42,743,050 576,000 Kansas City Southern Industries, Inc.(1) 25,966,080 132,000 Union Pacific Corp. 19,165,080 -------------- 87,874,210 -------------- Shares Value SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 7.9% 1,159,000 Altera Corp. $24,663,520 882,000 Applied Materials, Inc. 16,458,120 618,000 Broadcom Corp. Cl A(1) 16,043,280 567,000 Intersil Corp. Cl A 15,150,240 482,000 Linear Technology Corp. 16,850,720 846,000 MEMC Electronic Materials Inc.(1) 53,272,619 1,394,000 Microsemi Corp.(1) 34,153,000 3,338,000 PMC-Sierra, Inc.(1) 25,936,260 2,502,000 Teradyne, Inc.(1) 33,251,580 1,019,000 Xilinx, Inc. 25,240,630 -------------- 261,019,969 -------------- SOFTWARE -- 3.3% 2,340,000 Activision, Inc.(1) 63,297,000 757,997 Informatica Corp.(1) 12,097,632 492,000 McAfee Inc.(1) 16,359,000 30,000 Nintendo Co., Ltd. ORD 16,471,946 -------------- 108,225,578 -------------- SPECIALTY RETAIL -- 5.2% 688,000 Aeropostale Inc.(1) 21,871,520 1,098,000 GameStop Corp. Cl A(1) 60,433,920 371,000 Guess?, Inc. 14,201,880 331,000 J. Crew Group Inc.(1) 15,722,500 215,305 Tractor Supply Co.(1) 7,656,246 1,535,000 Urban Outfitters Inc.(1) 52,573,750 -------------- 172,459,816 -------------- TEXTILES, APPAREL & LUXURY GOODS -- 0.2% 56,000 Deckers Outdoor Corp.(1) 7,731,920 -------------- TOBACCO -- 0.2% 147,707 UST Inc. 7,691,103 -------------- WIRELESS TELECOMMUNICATION SERVICES -- 3.9% 857,000 MetroPCS Communications, Inc.(1) 16,831,480 686,163 NII Holdings, Inc.(1) 31,385,096 2,546,000 SBA Communications Corp. Cl A(1) 82,337,640 -------------- 130,554,216 -------------- TOTAL COMMON STOCKS (Cost $2,585,529,811) 3,246,003,356 -------------- - ------ 15 Vista Value Temporary Cash Investments -- 6.0% Repurchase Agreement, Credit Suisse First Boston, Inc., (collateralized by various U.S. Treasury obligations, 7.25%, 8/15/22, valued at $35,296,159), in a joint trading account at 1.87%, dated 4/30/08, due 5/1/08 (Delivery value $34,601,797) $34,600,000 Repurchase Agreement, Morgan Stanley Group, Inc., (collateralized by various U.S. Treasury obligations, 7.875%-8.75%, 8/15/20-2/15/21, valued at $168,994,003), in a joint trading account at 1.90%, dated 4/30/08, due 5/1/08 (Delivery value $165,708,745) 165,700,000 -------------- Value TOTAL TEMPORARY CASH INVESTMENTS (Cost $200,300,000) $200,300,000 -------------- TOTAL INVESTMENT SECURITIES -- 103.7% (Cost $2,785,829,811) 3,446,303,356 -------------- OTHER ASSETS AND LIABILITIES -- (3.7)% (123,470,929) -------------- TOTAL NET ASSETS -- 100.0% $3,322,832,427 ============== Forward Foreign Currency Exchange Contracts Settlement Unrealized Contracts to Sell Date Value Gain (Loss) 16,272,000 AUD for USD 5/30/08 $ 15,290,479 $(85,013) 10,525,840 CAD for USD 5/30/08 10,444,673 (91,410) 50,710,400 CHF for USD 5/30/08 48,978,586 133,312 123,771,200 DKK for USD 5/30/08 25,904,721 8,972 864,000,000 JPY for USD 5/30/08 8,323,080 (9,645) -------------- ------------ $108,941,539 $(43,784) ============== ============ (Value on Settlement Date $108,897,755) Notes to Schedule of Investments ADR = American Depositary Receipt AUD = Australian Dollar CAD = Canadian Dollar CHF = Swiss Franc DKK = Danish Krone JPY = Japanese Yen ORD = Foreign Ordinary Share USD = United States Dollar (1) Non-income producing. See Notes to Financial Statements. - ------ 16 SHAREHOLDER FEE EXAMPLES (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 17 Expenses Paid Beginning Ending During Period* Annualized Account Account Value 11/1/07 - Expense Value 11/1/07 4/30/08 4/30/08 Ratio* Growth ACTUAL Investor Class $1,000 $938.90 $4.82 1.00% Institutional Class $1,000 $939.40 $3.86 0.80% Advisor Class $1,000 $937.80 $6.02 1.25% R Class $1,000 $936.30 $7.22 1.50% HYPOTHETICAL Investor Class $1,000 $1,019.89 $5.02 1.00% Institutional Class $1,000 $1,020.89 $4.02 0.80% Advisor Class $1,000 $1,018.65 $6.27 1.25% R Class $1,000 $1,017.40 $7.52 1.50% Vista ACTUAL Investor Class $1,000 $876.90 $4.67 1.00% Institutional Class $1,000 $877.70 $3.73 0.80% Advisor Class $1,000 $875.60 $5.83 1.25% R Class $1,000 $874.50 $6.99 1.50% HYPOTHETICAL Investor Class $1,000 $1,019.89 $5.02 1.00% Institutional Class $1,000 $1,020.89 $4.02 0.80% Advisor Class $1,000 $1,018.65 $6.27 1.25% R Class $1,000 $1,017.40 $7.52 1.50% *Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 18 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) Growth Vista ASSETS Investment securities, at value (cost of $3,648,643,125 and $2,785,829,811, respectively) -- including $14,783,978 and $- of securities on loan, respectively $4,199,318,943 $3,446,303,356 Investments made with cash collateral received for securities on loan, at value (cost of $16,046,448 and $-, respectively) 16,046,448 -- -------------- -------------- Total investment securities, at value (cost of $3,664,689,573 and $2,785,829,811, respectively) 4,215,365,391 3,446,303,356 Cash 319,615 -- Receivable for investments sold 63,626,319 90,162,098 Receivable for forward foreign currency exchange contracts 81,403 142,284 Dividends and interest receivable 2,152,702 1,575,688 -------------- -------------- 4,281,545,430 3,538,183,426 -------------- -------------- LIABILITIES Disbursements in excess of demand deposit cash -- 437,405 Payable for collateral received for securities on loan 16,046,448 -- Payable for investments purchased 59,161,619 212,139,684 Payable for forward foreign currency exchange contracts -- 186,068 Accrued management fees 3,336,075 2,513,923 Distribution and service fees payable 39,876 73,919 -------------- -------------- 78,584,018 215,350,999 -------------- -------------- NET ASSETS $4,202,961,412 $3,322,832,427 ============== ============== See Notes to Financial Statements. - ------ 19 APRIL 30, 2008 (UNAUDITED) Growth Vista NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $3,736,714,896 $2,597,501,654 Accumulated undistributed net investment income (loss) 2,882,630 (9,310,463) Accumulated undistributed net realized gain (loss) on investment and foreign currency transactions (87,431,387) 74,246,695 Net unrealized appreciation on investments and translation of assets and liabilities in foreign currencies 550,795,273 660,394,541 -------------- -------------- $4,202,961,412 $3,322,832,427 ============== ============== INVESTOR CLASS, $0.01 PAR VALUE Net assets $3,788,574,027 $2,736,353,695 Shares outstanding 150,909,035 141,666,046 Net asset value per share $25.11 $19.32 INSTITUTIONAL CLASS, $0.01 PAR VALUE Net assets $219,695,923 $223,281,051 Shares outstanding 8,679,813 11,299,826 Net asset value per share $25.31 $19.76 ADVISOR CLASS, $0.01 PAR VALUE Net assets $191,606,545 $355,466,318 Shares outstanding 7,752,834 18,894,566 Net asset value per share $24.71 $18.81 R CLASS, $0.01 PAR VALUE Net assets $3,084,917 $7,731,363 Shares outstanding 124,968 406,141 Net asset value per share $24.69 $19.04 See Notes to Financial Statements. - ------ 20 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) Growth Vista INVESTMENT INCOME (LOSS) INCOME: Dividends (net of foreign taxes withheld of $245,995 and $219,608, respectively) $ 23,350,851 $ 5,752,578 Interest 432,214 956,489 Securities lending, net 222,148 -- -------------- -------------- 24,005,213 6,709,067 -------------- -------------- EXPENSES: Management fees 20,517,152 15,647,138 Distribution fees: Advisor Class 40,572 -- C Class 939 4,185 Service fees: Advisor Class 40,572 -- C Class 313 1,395 Distribution and service fees: Advisor Class 199,064 443,419 R Class 6,875 12,293 Directors' fees and expenses 50,645 40,013 Other expenses 7,167 7,628 -------------- -------------- 20,863,299 16,156,071 -------------- -------------- NET INVESTMENT INCOME (LOSS) 3,141,914 (9,447,004) -------------- -------------- REALIZED AND UNREALIZED GAIN (LOSS) NET REALIZED GAIN (LOSS) ON: Investment transactions 87,981,960 88,141,860 Foreign currency transactions (4,361,337) (8,335,880) -------------- -------------- 83,620,623 79,805,980 -------------- -------------- CHANGE IN NET UNREALIZED APPRECIATION (DEPRECIATION) ON: Investments (371,232,653) (520,746,634) Translation of assets and liabilities in foreign currencies 268,452 170,627 -------------- -------------- (370,964,201) (520,576,007) -------------- -------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (287,343,578) (440,770,027) -------------- -------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(284,201,664) $(450,217,031) ============== ============== See Notes to Financial Statements. - ------ 21 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Growth Vista Increase (Decrease) in Net Assets 2008 2007 2008 2007 OPERATIONS Net investment income (loss) $3,141,914 $8,565,562 $(9,447,004) $(16,538,483) Net realized gain (loss) 83,620,623 737,622,135 79,805,980 328,007,590 Change in net unrealized appreciation (depreciation) (370,964,201) 215,035,112 (520,576,007) 795,623,414 -------------- -------------- --------------- --------------- Net increase (decrease) in net assets resulting from operations (284,201,664) 961,222,809 (450,217,031) 1,107,092,521 -------------- -------------- --------------- --------------- DISTRIBUTIONS TO SHAREHOLDERS From net investment income: Investor Class (5,142,411) (2,635,083) -- -- Institutional Class (895,366) (2,056,902) -- -- From net realized gains: Investor Class -- -- (254,880,472) (15,549,310) Institutional Class -- -- (21,928,910) (1,008,670) Advisor Class -- -- (35,302,295) (1,649,953) C Class -- -- -- (26,987) R Class -- -- (388,974) (2,660) -------------- -------------- --------------- --------------- Decrease in net assets from distributions (6,037,777) (4,691,985) (312,500,651) (18,237,580) -------------- -------------- --------------- --------------- CAPITAL SHARE TRANSACTIONS Net increase (decrease) in net assets from capital share transactions (134,890,981) (1,121,480,853) 519,814,571 165,576,023 -------------- -------------- --------------- --------------- NET INCREASE (DECREASE) IN NET ASSETS (425,130,422) (164,950,029) (242,903,111) 1,254,430,964 NET ASSETS Beginning of period 4,628,091,834 4,793,041,863 3,565,735,538 2,311,304,574 -------------- -------------- --------------- --------------- End of period $4,202,961,412 $4,628,091,834 $3,322,832,427 $3,565,735,538 ============== ============== =============== =============== Accumulated undistributed net investment income (loss) $2,882,630 $5,778,262 $(9,310,463) $135,602 ============== ============== =============== =============== See Notes to Financial Statements. - ------ 22 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. Growth Fund (Growth) and Vista Fund (Vista) (collectively, the funds) are two funds in a series issued by the corporation. The funds are diversified under the 1940 Act. The funds' investment objective is to seek long-term capital growth. The funds pursue this objective by investing primarily in equity securities. Growth generally invests in larger-sized companies that management believes will increase in value but may purchase companies of any size. Vista generally invests in companies that are medium-sized and smaller at the time of purchase that management believes will increase in value. The following is a summary of the funds' significant accounting policies. MULTIPLE CLASS -- The funds are authorized to issue the Investor Class, the Institutional Class, the Advisor Class and the R Class. Prior to December 3, 2007, the funds were authorized to issue the C Class (see Note 9). The share classes differ principally in their respective distribution and shareholder servicing expenses and arrangements. All shares of each fund represent an equal pro rata interest in the net assets of the class to which such shares belong, and have identical voting, dividend, liquidation and other rights and the same terms and conditions, except for class specific expenses and exclusive rights to vote on matters affecting only individual classes. Income, non-class specific expenses, and realized and unrealized capital gains and losses of the funds are allocated to each class of shares based on their relative net assets. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Discount notes may be valued through a commercial pricing service or at amortized cost, which approximates fair value. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the funds determine that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the funds to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. SECURITIES ON LOAN -- Growth may lend portfolio securities through its lending agent to certain approved borrowers in order to earn additional income. The income earned, net of any rebates or fees, is included in the Statement of Operations. Growth continues to recognize any gain or loss in the market price of the securities loaned and records any interest earned or dividends declared. FOREIGN CURRENCY TRANSACTIONS -- All assets and liabilities initially expressed in foreign currencies are translated into U.S. dollars at prevailing exchange rates at period end. Purchases and sales of investment securities, dividend and interest income, and certain expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. For assets and liabilities, other than investments in securities, net realized and unrealized gains and losses from foreign currency translations arise from changes in currency exchange rates. - ------ 23 Net realized and unrealized foreign currency exchange gains or losses occurring during the holding period of investment securities are a component of realized gain (loss) on investment transactions and unrealized appreciation (depreciation) on investments, respectively. Certain countries may impose taxes on the contract amount of purchases and sales of foreign currency contracts in their currency. The funds record the foreign tax expense, if any, as a reduction to the net realized gain (loss) on foreign currency transactions. FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS -- The funds may enter into forward foreign currency exchange contracts to facilitate transactions of securities denominated in a foreign currency or to hedge the funds' exposure to foreign currency exchange rate fluctuations. The net U.S. dollar value of foreign currency underlying all contractual commitments held by the funds and the resulting unrealized appreciation or depreciation are determined daily using prevailing exchange rates. The funds bear the risk of an unfavorable change in the foreign currency exchange rate underlying the forward contract. Additionally, losses may arise if the counterparties do not perform under the contract terms. REPURCHASE AGREEMENTS -- The funds may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. Each fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable each fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to each fund under each repurchase agreement. JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, each fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. INCOME TAX STATUS -- It is each fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The funds are no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the funds. In addition, in the normal course of business, the funds enter into contracts that provide general indemnifications. The funds' maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the funds. The risk of material loss from such claims is considered by management to be remote. USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. - ------ 24 2. FEES AND TRANSACTIONS WITH RELATED PARTIES On September 25, 2007, the Advisor Class shareholders of Growth approved a change to the class's fee structure. The change was approved by the Board of Directors on November 29, 2006 and March 7, 2007. Effective December 3, 2007, the fee structure change resulted in an increase of 0.25% in the unified management fee and a simultaneous decrease of 0.25% in the total distribution and service fee, resulting in no change to the total operation expense ratio of the class. MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the funds with investment advisory and management services in exchange for a single, unified management fee (the fee) per class. The Agreement provides that all expenses of the funds, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of each specific class of shares of each fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula takes into account all of the investment advisor's assets under management in each fund's investment strategy (strategy assets) to calculate the appropriate fee rate for each fund. The strategy assets include each fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule for Growth ranges from 0.80% to 1.00% for the Investor Class, Advisor Class, C Class and R Class. Prior to December 3, 2007, the Advisor Class was 0.25% less at each point within the range for Growth. The annual management fee schedule for Vista is 1.00% for the Investor Class, Advisor Class, C Class and R Class. The Institutional Class is 0.20% less at each point within the range for the funds. The effective annual management fee for each class of each fund for the six months ended April 30, 2008, was as follows: Growth Vista Investor 1.00% 1.00% Institutional 0.80% 0.80% Advisor 0.95% 1.00% R 1.00% 1.00% DISTRIBUTION AND SERVICE FEES -- The Board of Directors has adopted a separate Master Distribution and Individual Shareholder Services Plan for each of the Advisor Class, C Class and R Class (collectively the plans), pursuant to Rule 12b-1 of the 1940 Act. The plans provide that the Advisor Class will pay American Century Investment Services, Inc. (ACIS) an annual distribution and service fee of 0.25%. Prior to December 3, 2007, the Board of Directors had adopted a Master Distribution and Shareholder Services Plan, pursuant to Rule 12b-1 of the 1940 Act, which provided that the Advisor Class of Growth would pay ACIS an annual distribution fee of 0.25% and service fee of 0.25%. The plans provide that the C Class will pay ACIS an annual distribution fee of 0.75% and service fee of 0.25%. The plans provide that the R Class will pay ACIS an annual distribution and service fee of 0.50%. The fees are computed and accrued daily based on each class's daily net assets and paid monthly in arrears. The distribution fee provides compensation for expenses incurred in connection with distributing shares of the classes including, but not limited to, payments to brokers, dealers, and financial institutions that have entered into sales agreements with respect to shares of the funds. The service fee provides compensation for shareholder and administrative services rendered by ACIS, its affiliates or independent third party providers for Advisor Class shares and for individual shareholder services rendered by broker/dealers or other independent financial intermediaries for C Class and R Class shares. Fees incurred under the plans during the six months ended April 30, 2008, are detailed in the Statement of Operations. - ------ 25 RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, ACIS, and the corporation's transfer agent, American Century Services, LLC. The funds are eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. Growth has a securities lending agreement with JPMorgan Chase Bank (JPMCB). Prior to December 12, 2007, the funds had a bank line of credit agreement with JPMCB. JPMCB is a custodian of the funds and a wholly owned subsidiary of JPM. 3. INVESTMENT TRANSACTIONS Investment transactions, excluding short-term investments, for the six months ended April 30, 2008, were as follows: Growth Vista Purchases $2,823,751,101 $2,390,859,537 Proceeds from sales $2,959,881,027 $2,200,830,601 4. CAPITAL SHARE TRANSACTIONS Transactions in shares of the funds were as follows: Six months ended Year ended April 30, 2008 October 31, 2007 Shares Amount Shares Amount Growth INVESTOR CLASS/SHARES AUTHORIZED 800,000,000 800,000,000 ============ ============ Sold 6,508,654 $162,059,917 16,976,807 $399,134,867 Issued in reinvestment of distributions 177,027 4,567,294 108,333 2,425,571 Redeemed (10,077,675) (249,365,499) (42,268,248) (1,005,443,921) ------------ -------------- ------------ --------------- (3,391,994) (82,738,288) (25,183,108) (603,883,483) ------------ -------------- ------------ ---------------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 150,000,000 150,000,000 ============ ============ Sold 584,118 14,655,059 10,007,473 248,497,432 Issued in reinvestment of distributions 34,450 895,366 91,175 2,056,902 Redeemed (2,471,951) (64,799,453) (33,807,486) (861,252,969) ------------ -------------- ------------ ---------------- (1,853,383) (49,249,028) (23,708,838) (610,698,635) ------------ -------------- ------------ ---------------- ADVISOR CLASS/SHARES AUTHORIZED 310,000,000 210,000,000 ============ ============ Sold 820,023 19,860,167 5,728,920 134,469,921 Issued in connection with reclassification (Note 9) 61,986 1,519,904 -- -- Redeemed (974,454) (23,621,851) (1,847,995) (43,503,786) ------------ -------------- ------------ ---------------- (92,445) (2,241,780) 3,880,925 90,966,135 ------------ -------------- ------------ ---------------- C CLASS/SHARES AUTHORIZED N/A 100,000,000 ============ ============ Sold 117 2,858 33,264 762,257 Redeemed in connection with reclassification (Note 9) (61,986) (1,519,904) -- -- Redeemed (1,377) (32,865) (15,025) (349,075) ------------ -------------- ------------ ---------------- (63,246) (1,549,911) 18,239 413,182 ------------ -------------- ------------ ---------------- R CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 ============ ============ Sold 47,411 1,192,268 94,157 2,147,094 Redeemed (12,833) (304,242) (18,497) (425,146) ------------ -------------- ------------ ---------------- 34,578 888,026 75,660 1,721,948 ------------ -------------- ------------ ---------------- Net increase (decrease) (5,366,490) $(134,890,981) (44,917,122) $(1,121,480,853) ============ ============== ============ ================ - ------ 26 Six months Year ended ended April 30, 2008 October 31, 2007 Shares Amount Shares Amount Vista INVESTOR CLASS/SHARES AUTHORIZED 800,000,000 800,000,000 ============ ============ Sold 25,942,056 $519,349,344 29,032,048 $594,313,388 Issued in reinvestment of distributions 10,942,317 228,584,994 817,264 14,040,588 Redeemed (15,716,686) (307,738,175) (29,523,877) (567,312,331) ------------ ------------ ------------ ------------- 21,167,687 440,196,163 325,435 41,041,645 ------------ ------------ ------------ ------------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 80,000,000 80,000,000 ============ ============ Sold 3,550,443 71,917,037 5,631,084 115,870,016 Issued in reinvestment of distributions 1,026,634 21,928,910 57,617 1,008,292 Redeemed (3,571,953) (74,662,332) (3,345,045) (63,192,246) ------------ ------------ ------------ ------------- 1,005,124 19,183,615 2,343,656 53,686,062 ------------ ------------ ------------ ------------- ADVISOR CLASS/SHARES AUTHORIZED 310,000,000 210,000,000 ============ ============ Sold 5,219,735 102,929,100 7,905,928 161,043,591 Issued in connection with reclassification (Note 9) 298,623 6,537,776 -- -- Issued in reinvestment of distributions 1,717,908 34,993,776 96,989 1,632,335 Redeemed (4,402,621) (83,120,534) (5,081,285) (95,833,752) ------------ ------------ ------------ ------------- 2,833,645 61,340,118 2,921,632 66,842,174 ------------ ------------ ------------ ------------- C CLASS/SHARES AUTHORIZED N/A 100,000,000 ============ ============ Sold 6,353 139,449 197,808 3,787,658 Issued in reinvestment of distributions -- -- 1,736 25,006 Redeemed in connection with reclassification (Note 9) (298,623) (6,537,776) -- -- Redeemed (30,349) (630,821) (69,921) (1,288,863) ------------ ------------ ------------ ------------- (322,619) (7,029,148) 129,623 2,523,801 ------------ ------------ ------------ ------------- R CLASS/SHARES AUTHORIZED 10,000,000 10,000,000 ============ ============ Sold 355,935 7,066,620 189,380 3,673,020 Issued in reinvestment of distributions 18,855 388,974 -- -- Redeemed (68,687) (1,331,771) (110,041) (2,190,679) ------------ ------------ ------------ ------------- 306,103 6,123,823 79,339 1,482,341 ------------ ------------ ------------ ------------- Net increase (decrease) 24,989,940 $519,814,571 5,799,685 $165,576,023 ============ ============= ============ ============= 5. SECURITIES LENDING As of April 30, 2008, securities in Growth valued at $14,783,978 were on loan through the lending agent, JPMCB, to certain approved borrowers. JPMCB receives and maintains collateral in the form of cash and/or acceptable securities as approved by ACIM. Cash collateral is invested in authorized investments by the lending agent in a pooled account. The value of cash collateral received at period end is disclosed in the Statement of Assets and Liabilities and investments made with the cash by the lending agent are listed in the Schedule of Investments. Any deficiencies or excess of collateral must be delivered or transferred by the member firms no later than the close of business on the next business day. The total market value of all collateral received for Growth, at this date, was $16,046,448. Growth's risks in securities lending are that the borrower may not provide additional collateral when required or return the securities when due. If the borrower defaults, receipt of the collateral by the Growth may be delayed or limited. - ------ 27 6. BANK LINE OF CREDIT Effective December 12, 2007, the funds, along with certain other funds managed by ACIM or ACGIM, have a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the funds, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The funds may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The funds did not borrow from the line during the six months ended April 30, 2008. 7. RISK FACTORS There are certain risks involved in investing in foreign securities. These risks include those resulting from future adverse political, social, and economic developments, fluctuations in currency exchange rates, the possible imposition of exchange controls, and other foreign laws or restrictions. 8. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: Growth Vista Federal tax cost of investments $3,687,182,133 $2,791,072,126 ============== =============== Gross tax appreciation of investments $621,370,715 $690,235,461 Gross tax depreciation of investments (93,187,457) (35,004,231) -------------- --------------- Net tax appreciation (depreciation) of investments $528,183,258 $655,231,230 ============== =============== The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. As of October 31, 2007, Growth had accumulated capital losses of $(168,744), which represent net capital loss carryovers that may be used to offset future realized capital gains for federal income tax purposes. Growth's capital loss carryovers expire in 2010. 9. CORPORATE EVENT On July 27, 2007, the C Class shareholders of each fund approved a reclassification of C Class shares into Advisor Class shares of that fund. The change was approved by the Board of Directors on November 29, 2006 and March 7, 2007. The reclassification was effective December 3, 2007. 10. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 28 FINANCIAL HIGHLIGHTS Growth Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $26.78 $21.99 $19.80 $18.43 $17.26 $14.80 -------- ------ ------ ------ ------- ------ Income From Investment Operations Net Investment Income (Loss)(2) 0.02 0.04 0.02 0.08 (0.01) 0.01 Net Realized and Unrealized Gain (Loss) (1.66) 4.76 2.26 1.30 1.18 2.45 -------- ------ ------ ------ ------- ------ Total From Investment Operations (1.64) 4.80 2.28 1.38 1.17 2.46 -------- ------ ------ ------ ------- ------ Distributions From Net Investment Income (0.03) (0.01) (0.09) (0.01) -- -- -------- ------ ------ ------ ------- ------ Net Asset Value, End of Period $25.11 $26.78 $21.99 $19.80 $18.43 $17.26 ======== ====== ====== ====== ======= ====== TOTAL RETURN(3) (6.11)% 21.86% 11.51% 7.47% 6.78% 16.62% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.00%(4) 1.00% 1.00% 1.00% 1.00% 1.00% Ratio of Net Investment Income (Loss) to Average Net Assets 0.15%(4) 0.15% 0.09% 0.38% (0.07)% 0.05% Portfolio Turnover Rate 67% 112% 127% 77% 131% 159% Net Assets, End of Period (in millions) $3,789 $4,133 $3,946 $4,008 $4,176 $4,350 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 29 Growth Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $27.03 $22.19 $19.98 $18.59 $17.38 $14.87 -------- -------- -------- -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(2) 0.04 0.09 0.06 0.11 0.02 0.04 Net Realized and Unrealized Gain (Loss) (1.68) 4.81 2.27 1.33 1.19 2.47 -------- -------- -------- -------- -------- -------- Total From Investment Operations (1.64) 4.90 2.33 1.44 1.21 2.51 -------- -------- -------- -------- -------- -------- Distributions From Net Investment Income (0.08) (0.06) (0.12) (0.05) -- -- -------- -------- -------- -------- -------- -------- Net Asset Value, End of Period $25.31 $27.03 $22.19 $19.98 $18.59 $17.38 ======== ======== ======== ======== ======== ======== TOTAL RETURN(3) (6.06)% 22.13% 11.70% 7.72% 6.96% 16.88% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.80%(4) 0.80% 0.80% 0.80% 0.80% 0.80% Ratio of Net Investment Income (Loss) to Average Net Assets 0.35%(4) 0.35% 0.29% 0.58% 0.13% 0.25% Portfolio Turnover Rate 67% 112% 127% 77% 131% 159% Net Assets, End of Period (in thousands) $219,696 $284,695 $759,816 $689,983 $685,090 $618,569 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 30 Growth Advisor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $26.36 $21.68 $19.53 $18.22 $17.11 $14.70 ---------- -------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) (0.01) (0.04) (0.03) 0.02 (0.06) (0.03) Net Realized and Unrealized Gain (Loss) (1.64) 4.72 2.22 1.29 1.17 2.44 ---------- -------- ------- ------- ------- ------- Total From Investment Operations (1.65) 4.68 2.19 1.31 1.11 2.41 ---------- -------- ------- ------- ------- ------- Distributions From Net Investment Income -- -- (0.04) -- -- -- ---------- -------- ------- ------- ------- ------- Net Asset Value, End of Period $24.71 $26.36 $21.68 $19.53 $18.22 $17.11 ========== ======== ======= ======= ======= ======= TOTAL RETURN(3) (6.22)% 21.59% 11.23% 7.19% 6.49% 16.39% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.25%(4) 1.25% 1.25% 1.25% 1.25% 1.25% Ratio of Net Investment Income (Loss) to Average Net Assets (0.10)%(4) (0.10)% (0.16)% 0.13% (0.32)% (0.20)% Portfolio Turnover Rate 67% 112% 127% 77% 131% 159% Net Assets, End of Period (in thousands) $191,607 $206,837 $85,953 $86,303 $76,962 $55,010 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. Total returns are calculated based on the net asset value on the last business day. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 31 Growth R Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003(2) PER-SHARE DATA Net Asset Value, Beginning of Period $26.37 $21.74 $19.59 $18.32 $17.25 $16.56 ---------- ------- ------- ------- ------- ---------- Income From Investment Operations Net Investment Income (Loss)(3) (0.04) (0.10) (0.11) (0.07) (0.13) (0.02) Net Realized and Unrealized Gain (Loss) (1.64) 4.73 2.26 1.34 1.20 0.71 ---------- ------- ------- ------- ------- ---------- Total From Investment Operations (1.68) 4.63 2.15 1.27 1.07 0.69 ---------- ------- ------- ------- ------- ---------- Net Asset Value, End of Period $24.69 $26.37 $21.74 $19.59 $18.32 $17.25 ========== ======= ======= ======= ======= ========== TOTAL RETURN(4) (6.37)% 21.30% 10.97% 6.93% 6.20% 4.17% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.50%(5) 1.50% 1.50% 1.50% 1.50% 1.50%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.35)%(5) (0.35)% (0.41)% (0.12)% (0.57)% (0.58)%(5) Portfolio Turnover Rate 67% 112% 127% 77% 131% 159%(6) Net Assets, End of Period (in thousands) $3,085 $2,383 $298 $49 $12 $3 (1) Six months ended April 30, 2008 (unaudited). (2) August 29, 2003 (commencement of sale) through October 31, 2003. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset value to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2003. See Notes to Financial Statements. - ------ 32 Vista Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $24.24 $16.35 $14.99 $13.14 $11.97 $9.25 ---------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) (0.06) (0.12) (0.04) (0.04) (0.06) (0.06) Net Realized and Unrealized Gain (Loss) (2.77) 8.14 1.40 1.89 1.23 2.78 ---------- ------- ------- ------- ------- ------- Total From Investment Operations (2.83) 8.02 1.36 1.85 1.17 2.72 ---------- ------- ------- ------- ------- ------- Distributions From Net Realized Gains (2.09) (0.13) -- -- -- -- ---------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $19.32 $24.24 $16.35 $14.99 $13.14 $11.97 ========== ======= ======= ======= ======= ======= TOTAL RETURN(3) (12.31)% 49.39% 9.07% 14.08% 9.77% 29.41% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.00%(4) 1.00% 1.00% 1.00% 1.00% 1.00% Ratio of Net Investment Income (Loss) to Average Net Assets (0.58)%(4) (0.60)% (0.23)% (0.26)% (0.48)% (0.57)% Portfolio Turnover Rate 70% 121% 234% 284% 255% 280% Net Assets, End of Period (in millions) $2,736 $2,921 $1,965 $1,902 $1,418 $1,240 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 33 Vista Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $24.72 $16.64 $15.22 $13.32 $12.11 $9.34 ---------- -------- -------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) (0.04) (0.08) (0.01) (0.01) (0.04) (0.03) Net Realized and Unrealized Gain (Loss) (2.83) 8.29 1.43 1.91 1.25 2.80 ---------- -------- -------- ------- ------- ------- Total From Investment Operations (2.87) 8.21 1.42 1.90 1.21 2.77 ---------- -------- -------- ------- ------- ------- Distributions From Net Realized Gains (2.09) (0.13) -- -- -- -- ---------- -------- -------- ------- ------- ------- Net Asset Value, End of Period $19.76 $24.72 $16.64 $15.22 $13.32 $12.11 ========== ======== ======== ======= ======== ======= TOTAL RETURN(3) (12.23)% 49.68% 9.33% 14.26% 9.99% 29.66% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.80%(4) 0.80% 0.80% 0.80% 0.80% 0.80% Ratio of Net Investment Income (Loss) to Average Net Assets (0.38)%(4) (0.40)% (0.03)% (0.06)% (0.28)% (0.37)% Portfolio Turnover Rate 70% 121% 234% 284% 255% 280% Net Assets, End of Period (in thousands) $223,281 $254,528 $132,325 $98,439 $42,747 $34,177 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 34 Vista Advisor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $23.69 $16.03 $14.73 $12.95 $11.82 $9.15 ---------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) (0.08) (0.16) (0.08) (0.08) (0.11) (0.08) Net Realized and Unrealized Gain (Loss) (2.71) 7.95 1.38 1.86 1.24 2.75 ---------- ------- ------- ------- ------- ------- Total From Investment Operations (2.79) 7.79 1.30 1.78 1.13 2.67 ---------- ------- ------- ------- ------- ------- Distributions From Net Realized Gains (2.09) (0.13) -- -- -- -- ---------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $18.81 $23.69 $16.03 $14.73 $12.95 $11.82 ========== ======= ======= ======= ======= ======= TOTAL RETURN(3) (12.44)% 48.94% 8.83% 13.75% 9.56% 29.18% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.25%(4) 1.25% 1.25% 1.25% 1.25% 1.25% Ratio of Net Investment Income (Loss) to Average Net Assets (0.83)%(4) (0.85)% (0.48)% (0.51)% (0.73)% (0.82)% Portfolio Turnover Rate 70% 121% 234% 284% 255% 280% Net Assets, End of Period (in thousands) $355,466 $380,555 $210,576 $190,635 $106,750 $17,060 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 35 Vista R Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $23.98 $16.25 $14.97 $15.32 ---------- ------- ------- ---------- Income From Investment Operations Net Investment Income (Loss)(3) (0.10) (0.21) (0.16) (0.04) Net Realized and Unrealized Gain (Loss) (2.75) 8.07 1.44 (0.31) ---------- ------- ------- ---------- Total From Investment Operations (2.85) 7.86 1.28 (0.35) ---------- ------- ------- ---------- Distributions From Net Realized Gains (2.09) (0.13) -- -- ---------- ------- ------- ---------- Net Asset Value, End of Period $19.04 $23.98 $16.25 $14.97 ========== ======= ======= ========== TOTAL RETURN(4) (12.55)% 48.71% 8.55% (2.28)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.50%(5) 1.50% 1.50% 1.50%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (1.08)%(5) (1.10)% (0.73)% (0.92)%(5) Portfolio Turnover Rate 70% 121% 234% 284%(6) Net Assets, End of Period (in thousands) $7,731 $2,398 $337 $24 (1) Six months ended April 30, 2008 (unaudited). (2) July 29, 2005 (commencement of sale) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2005. See Notes to Financial Statements. - ------ 36 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the funds' investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the funds. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The funds file their complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The funds' Forms N-Q are available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The funds also make their complete schedule of portfolio holdings for the most recent quarter of their fiscal year available on their website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 37 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 1000® GROWTH INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 1000® VALUE INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 2000® INDEX is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® GROWTH INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 2000® VALUE INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® GROWTH INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL MIDCAP® VALUE INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. - ------ 38 [blank page] [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE . . . . . . . . . . . . . 1-800-345-8765 1-800-345-2021 or INVESTOR SERVICES REPRESENTATIVE . . . . . . . . . . 816-531-5575 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investments P.O. Box 419200 PRSRT STD Kansas City, MO 64141-6200 U.S. POSTAGE PAID AMERICAN CENTURY COMPANIES American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60504S
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS GIFTRUST® FUND PRESIDENT'S LETTER JONATHAN THOMAS [photo of Jonathan Thomas] Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® Giftrust Fund for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns . . . . . . . . . . . . . . . . . . . . . . 2 GIFTRUST Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries. . . . . . . . . . . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 6 Shareholder Fee Example . . . . . . . . . . . . . . . . . . . . . . . 7 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 9 FINANCIAL STATEMENTS Statement of Assets and Liabilities . . . . . . . . . . . . . . . . . 12 Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . 13 Statement of Changes in Net Assets. . . . . . . . . . . . . . . . . . 14 Notes to Financial Statements . . . . . . . . . . . . . . . . . . . . 15 Financial Highlights. . . . . . . . . . . . . . . . . . . . . . . . . 18 OTHER INFORMATION Additional Information. . . . . . . . . . . . . . . . . . . . . . . . 19 Index Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 20 The opinions expressed in the Market Perspective and the Portfolio Commentary reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of Chief Investment Officer] By Steve Lurito, Chief Investment Officer, U.S. Growth Equity VOLATILITY UP, STOCKS DOWN The six months ended April 30, 2008 saw stocks produce negative returns as market volatility surged in the wake of the subprime credit crisis. In terms of the economy, tighter credit and the slumping housing market hurt consumer spending and confidence, leading many economists to suggest we're already in recession. Meanwhile, mounting losses hurt the banks, brokers, and other big institutional players important for the functioning of the financial markets. Facing dual economic and financial crises, the Federal Reserve (the Fed) took a series of extraordinary steps, slashing interest rates and acting as a lender of last resort not only for banks, but also major brokers. That helped stocks rebound, with many analysts suggesting that the mid-March buy-out of investment bank Bear Stearns--in a deal arranged by the Fed--put a floor under the market. RETURNS BY SIZE, STYLE MIXED Performance by size and style was mixed (see the accompanying table), reflecting the volatile trading during the period, when corporate earnings estimates were revised down sharply. Looking at returns by sector, energy shares were the only segment to produce positive results during the six months. At the other end of the spectrum, credit-related losses took a big bite out of earnings for financials stocks, which performed worst. Consumer discretionary shares also lagged badly, as did information technology stocks, which suffered from poor pricing and demand trends for chips and some consumer-related tech goods. OPPORTUNITY AMID VOLATILITY Despite the uncertainty surrounding the economy, we think growth-oriented stocks can perform well relative to value as proven earnings growth becomes scarce during economic slowdowns. And while we don't see an end to market volatility anytime soon, we view this dynamic as a natural part of the investing cycle--and one that presents us with opportunities to build positions in what we believe are high-quality companies trading at attractive prices. Indeed, investors should rest assured that we're finding no shortage of companies demonstrating sustained earnings growth and business improvement. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% * Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE Giftrust Total Returns as of April 30, 2008 Average Annual Returns 6 Since Inception months(1) 1 year 5 years 10 years Inception Date GIFTRUST -7.99% 16.46% 19.77%(2) 4.66%(2) 12.98%(2) 11/25/83 RUSSELL MIDCAP GROWTH INDEX(3) -8.44% -1.93% 15.29% 5.75% --(4) -- (1) Total returns for periods less than one year are not annualized. (2) Returns would have been lower if management fees had not been waived from 2/1/04 to 7/31/04. (3) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (4) Benchmark began 12/31/85. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. The fund's investment process may result in high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. International investing involves special risks, such as political instability and currency fluctuations. Investing in emerging markets may accentuate these risks. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 3 Giftrust Growth of $10,000 Over 10 Years $10,000 investment made April 30, 1998
One-Year Returns Over 10 Years Periods ended April 30 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Giftrust -21.02% 113.18% -42.37% -14.35% -23.04% 19.73%* 3.48%* 47.22% 16.13% 16.46% Russell Midcap Growth Index 12.33% 53.02% -29.47% -15.01% -16.67% 36.14% 7.05% 28.27% 11.13% -1.93% * Returns would have been lower, along with the ending value, if management fees had not been waived from 2/1/04 to 7/31/04. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. The fund's investment process may result in high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. International investing involves special risks, such as political instability and currency fluctuations. Investing in emerging markets may accentuate these risks. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 4 PORTFOLIO COMMENTARY Giftrust Portfolio Managers: David Hollond and Greg Walsh In February 2008, Glenn Fogle left the Giftrust team to focus on the American Century Vista Fund. PERFORMANCE SUMMARY Giftrust returned -7.99%* for the six months ended April 30, 2008, compared with the -8.44% return of its benchmark, the Russell Midcap Growth Index. Giftrust has also produced returns in excess of its benchmark for the longer investment periods of one and five years. As discussed in the Market Perspective on page 2, equity markets generally declined during the reporting period, as the subprime-mortgage-driven credit crisis spread to other areas of the economy, and rising energy and commodity prices increased inflation concerns. In this environment, both growth and value stocks lost ground across the capitalization spectrum. Giftrust derived relative gains from effective stock selection in the materials and industrials sectors. An overweight allocation to the materials sector also boosted gains. Offsetting those positive contributions, poor stock selection in the energy and consumer discretionary sectors, as well as an underweight position in energy, weighed on Giftrust's performance. In spite of the poor performance of foreign stocks during the reporting period, the portfolio derived gains from its 18% stake in foreign holdings. MATERIALS GAINED A higher standard of living in emerging-market countries, lower availability of farmland, and greater global focus on biofuels translated into growing global demand for agriculture. This increased demand has in turn driven up commodities prices that benefited select chemicals companies within the materials sector during the reporting period. Notably, agricultural chemicals company K+S AG's share price gained 101% for the reporting period as the company continued to benefit from higher demand in the fertilizer market. Monsanto, which is a producer of corn seed, benefited from escalating corn prices. Since neither of these were components of the benchmark, both companies were substantial contributors to relative performance. Also in the materials sector, Owens-Illinois--Giftrust's largest holding at period end--was a meaningful positive contributor to performance, as the bottling company was one of the rare companies to sharply exceed earnings estimates in the reporting period. For the first quarter of 2008 in particular, the company's earnings more than tripled as it benefited from increased prices, an improved product mix, and manufacturing efficiencies. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Owens-Illinois Inc. 5.0% 2.6% Flowserve Corp. 3.9% 2.3% CSL Ltd. ORD 3.6% 2.2% Monsanto Co. 3.2% 3.1% Nintendo Co., Ltd. ORD 2.6% 4.5% Express Scripts, Inc. 2.4% 1.8% PetroHawk Energy Corp. 2.3% -- Urban Outfitters Inc. 2.1% -- Vestas Wind Systems AS ORD 2.0% 0.6% Invitrogen Corp. 1.8% 1.5% * Total returns for periods less than one year are not annualized. - ------ 5 Giftrust INDUSTRIALS CONTRIBUTED, BUT CERTAIN HOLDINGS LAGGED Within the industrials sector, the portfolio held an overweight position in machinery company Flowserve. A maker of pumps, seals, and valves used by the oil and gas, power, chemicals, and water industries, Flowserve was the largest contributor to portfolio performance for the reporting period as its share price gained 58%. Giftrust also benefited from an overweight position in the electrical equipment industry, where we focused on companies involved with alternative energy. Within this emerging group, we have succeeded in selecting some of the largest beneficiaries of increasing demand. Notably, an overweight stake in First Solar aided absolute and relative gains as the manufacturer of solar modules saw its share price surge 84%. Elsewhere in the industrials sector, we maintained an overweight position in the aerospace and defense industry. Holdings within this group have contributed significantly to portfolio gains in the past, benefiting from a replacement cycle and expanding orders in global aviation. During the reporting period, though, this group lost ground amid market volatility and profit-taking. BE Aerospace, in particular, declined 19% and detracted from portfolio performance. CONSUMER DISCRETIONARY DETRACTED The consumer discretionary group also weighed on Giftrust's performance. An overweight stake in ITT Educational Services hindered performance as the private education company suffered from the fallout from the credit crunch. As with the subprime mortgage industry, private education firms experienced a loss of liquidity as investors shied away from student loans. OUTLOOK Giftrust's investment process focuses on medium-sized companies with accelerating revenue and earnings growth rates and share price momentum. We believe that active investing in such companies will generate outperformance over time compared with the Russell Midcap Growth Index. Despite the volatility and the market's tilt away from momentum-style investing during the course of the reporting period, we will remain focused on our time-tested process. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Chemicals 6.9% 3.7% Machinery 6.1% 5.3% Software 6.1% 5.7% Biotechnology 5.9% 3.7% Semiconductors & Semiconductor Equipment 5.7% 6.1% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 81.5% 86.0% Foreign Common Stocks(1) 18.1% 13.4% TOTAL COMMON STOCKS 99.6% 99.4% Temporary Cash Investments 0.9% 0.2% Other Assets and Liabilities (0.5)% 0.4% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. - ------ 6 SHAREHOLDER FEE EXAMPLE (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 7 Beginning Ending Expenses Paid Account Value Account Value During Period* Annualized 11/1/07 4/30/08 11/1/07 - 4/30/08 Expense Ratio* Actual $1,000 $920.10 $4.77 1.00% Hypothetical $1,000 $1,019.89 $5.02 1.00% * Expenses are equal to the fund's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 8 SCHEDULE OF INVESTMENTS Giftrust APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 99.6% AEROSPACE & DEFENSE -- 3.3% 125,100 Alliant Techsystems Inc.(1) $ 13,730,980 479,465 BE Aerospace, Inc.(1) 19,351,207 76,803 Precision Castparts Corp. 9,028,961 -------------- 42,111,148 -------------- BEVERAGES -- 0.9% 184,396 Central European Distribution Corp.(1) 11,233,404 -------------- BIOTECHNOLOGY -- 5.9% 528,100 BioMarin Pharmaceutical Inc.(1) 19,254,526 159,700 Celgene Corp.(1) 9,923,758 1,226,097 CSL Ltd. ORD 46,012,893 -------------- 75,191,177 -------------- CAPITAL MARKETS -- 2.0% 190,650 Janus Capital Group Inc. 5,349,639 221,900 Raymond James Financial, Inc. 6,384,063 406,400 Waddell & Reed Financial, Inc. Cl A 13,760,704 -------------- 25,494,406 -------------- CHEMICALS -- 6.9% 174,400 Celanese Corp., Series A 7,804,400 58,316 CF Industries Holdings, Inc. 7,796,849 49,400 K+S AG ORD 20,798,324 352,440 Monsanto Co. 40,185,209 85,400 Mosaic Co. (The)(1) 10,462,354 -------------- 87,047,136 -------------- COMMERCIAL BANKS -- 0.5% 179,400 BB&T Corporation 6,151,626 -------------- COMMERCIAL SERVICES & SUPPLIES -- 1.4% 175,200 Copart, Inc.(1) 7,160,424 170,000 FTI Consulting, Inc.(1) 10,880,000 -------------- 18,040,424 -------------- COMMUNICATIONS EQUIPMENT -- 2.0% 446,400 JDS Uniphase Corp.(1) 6,387,984 153,100 Research In Motion Ltd.(1) 18,621,553 -------------- 25,009,537 -------------- COMPUTERS & PERIPHERALS -- 2.1% 114,130 Apple Inc.(1) 19,852,914 404,100 QLogic Corp.(1) 6,449,436 -------------- 26,302,350 -------------- Shares Value CONSTRUCTION & ENGINEERING -- 1.4% 177,204 Foster Wheeler Ltd.(1) $ 11,286,123 212,100 KBR, Inc. 6,116,964 -------------- 17,403,087 -------------- CONTAINERS & PACKAGING -- 5.5% 235,800 Crown Holdings Inc.(1) 6,328,872 1,159,600 Owens-Illinois Inc.(1) 63,951,940 -------------- 70,280,812 -------------- DISTRIBUTORS -- 0.8% 456,300 LKQ Corp.(1) 9,929,088 -------------- DIVERSIFIED -- 0.8% 390,900 Financial Select Sector SPDR Fund 10,335,396 -------------- DIVERSIFIED CONSUMER SERVICES -- 1.0% 60,300 Capella Education Co.(1) 3,888,747 112,783 DeVry Inc. 6,428,631 14,300 Strayer Education, Inc. 2,655,367 -------------- 12,972,745 -------------- DIVERSIFIED FINANCIAL SERVICES -- 0.5% 170,900 Nasdaq Stock Market, Inc. (The)(1) 6,229,305 -------------- ELECTRICAL EQUIPMENT -- 4.5% 204,473 Energy Conversion Devices Inc.(1) 6,663,775 43,838 First Solar Inc.(1) 12,800,258 482,400 JA Solar Holdings Co., Ltd. ADR(1) 11,582,424 236,200 Vestas Wind Systems AS ORD(1) 25,935,375 -------------- 56,981,832 -------------- ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.7% 226,973 Dolby Laboratories Inc. Cl A(1) 9,112,966 -------------- ENERGY EQUIPMENT & SERVICES -- 4.4% 148,490 Cameron International Corp.(1) 7,310,163 183,800 Dresser-Rand Group Inc.(1) 6,721,566 262,300 Hercules Offshore Inc.(1) 6,914,228 95,000 National Oilwell Varco, Inc.(1) 6,502,750 216,200 Patterson-UTI Energy Inc. 6,040,628 210,100 Seadrill Ltd. 6,399,194 190,700 Weatherford International Ltd.(1) 15,383,769 -------------- 55,272,298 -------------- FOOD PRODUCTS -- 1.0% 110,800 Bunge Ltd. 12,641,172 -------------- - ------ 9 Giftrust Shares Value HEALTH CARE EQUIPMENT & SUPPLIES -- 1.9% 23,000 Intuitive Surgical Inc.(1) $ 6,652,980 362,000 Varian Medical Systems, Inc.(1) 16,970,560 -------------- 23,623,540 -------------- HEALTH CARE PROVIDERS & SERVICES -- 3.3% 433,400 Express Scripts, Inc.(1) 30,346,668 239,600 Medco Health Solutions Inc.(1) 11,869,784 -------------- 42,216,452 -------------- HOTELS, RESTAURANTS & LEISURE -- 2.2% 98,083 Bally Technologies, Inc.(1) 3,304,416 184,566 International Game Technology 6,411,823 64,500 Panera Bread Co. Cl A(1) 3,370,770 415,100 WMS Industries Inc.(1) 15,022,469 -------------- 28,109,478 -------------- INDUSTRIAL CONGLOMERATES -- 2.2% 409,700 McDermott International, Inc.(1) 21,951,726 90,600 Walter Industries Inc. 6,284,016 -------------- 28,235,742 -------------- INSURANCE -- 0.3% 65,769 Assurant, Inc. 4,274,985 -------------- INTERNET & CATALOG RETAIL -- 1.6% 160,108 priceline.com Inc.(1) 20,436,185 -------------- INTERNET SOFTWARE & SERVICES -- 0.7% 92,800 Equinix Inc.(1) 8,390,976 -------------- IT SERVICES -- 1.4% 63,100 MasterCard Inc. Cl A 17,551,896 -------------- LIFE SCIENCES TOOLS & SERVICES -- 3.7% 125,885 Covance Inc.(1) 10,547,904 244,580 Invitrogen Corp.(1) 22,885,351 291,600 Parexel International Corp.(1) 7,406,640 112,000 Thermo Fisher Scientific Inc.(1) 6,481,440 -------------- 47,321,335 -------------- MACHINERY -- 6.1% 312,300 AGCO Corp.(1) 18,778,599 401,441 Flowserve Corp. 49,814,814 114,900 Joy Global Inc. 8,531,325 -------------- 77,124,738 -------------- MEDIA -- 1.3% 227,488 Liberty Global, Inc. Series A(1) 8,050,800 239,100 Liberty Global, Inc. Series C(1) 7,938,120 -------------- 15,988,920 -------------- METALS & MINING -- 0.7% 135,900 Agnico-Eagle Mines Ltd. 8,486,955 -------------- Shares Value MULTILINE RETAIL -- 0.3% 135,700 Big Lots, Inc.(1) $ 3,667,971 -------------- OIL, GAS & CONSUMABLE FUELS -- 5.2% 259,900 Alpha Natural Resources, Inc.(1) 12,644,135 218,800 Arena Resources Inc.(1) 9,824,120 47,800 Patriot Coal Corp.(1) 3,157,190 45,200 Peabody Energy Corp. 2,763,076 1,215,900 PetroHawk Energy Corp.(1) 28,743,876 221,800 Quicksilver Resources Inc.(1) 9,202,482 -------------- 66,334,879 -------------- PERSONAL PRODUCTS -- 0.7% 214,300 Avon Products, Inc. 8,361,986 -------------- REAL ESTATE INVESTMENT TRUSTS (REITS) -- 0.5% 152,400 Plum Creek Timber Co. Inc. 6,224,016 -------------- ROAD & RAIL -- 1.9% 171,500 CSX Corp. 10,795,925 231,300 Norfolk Southern Corp. 13,780,854 -------------- 24,576,779 -------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 5.7% 332,400 Intersil Corp. Cl A 8,881,728 249,000 Linear Technology Corp. 8,705,040 492,200 Marvell Technology Group Ltd.(1) 6,373,990 227,616 MEMC Electronic Materials Inc.(1) 14,332,980 244,400 Microchip Technology Inc. 8,981,700 506,000 Semiconductor HOLDRs Trust 15,468,420 108,589 Varian Semiconductor Equipment Associates, Inc.(1) 3,977,615 228,300 Xilinx, Inc. 5,654,991 -------------- 72,376,464 -------------- SOFTWARE -- 6.1% 674,671 Activision, Inc.(1) 18,249,851 120,100 Electronic Arts Inc.(1) 6,181,547 175,400 McAfee Inc.(1) 5,832,050 60,400 Nintendo Co., Ltd. ORD 33,163,517 132,700 Ubisoft Entertainment SA ORD(1) 13,387,548 -------------- 76,814,513 -------------- SPECIALTY RETAIL -- 5.5% 398,922 GameStop Corp. Cl A(1) 21,956,667 213,600 Guess?, Inc. 8,176,608 829,600 Pier 1 Imports, Inc.(1) 6,470,880 189,700 Ross Stores, Inc. 6,353,053 787,800 Urban Outfitters Inc.(1) 26,982,150 -------------- 69,939,358 -------------- - ------ 10 Giftrust Shares Value TEXTILES, APPAREL & LUXURY GOODS -- 1.7% 80,100 Phillips-Van Heusen Corp. $ 3,381,021 233,200 Polo Ralph Lauren Corp. 14,463,064 110,900 Warnaco Group Inc. (The)(1) 5,116,926 -------------- 22,961,011 -------------- WIRELESS TELECOMMUNICATION SERVICES -- 1.0% 162,500 MetroPCS Communications, Inc.(1) 3,191,500 218,200 NII Holdings, Inc.(1) 9,980,468 -------------- 13,171,968 -------------- TOTAL COMMON STOCKS (Cost $983,063,460) 1,263,930,056 -------------- Value Temporary Cash Investments -- 0.9% Repurchase Agreement, Bank of America Securities, LLC, (collateralized by various U.S. Treasury obligations, 0.625%, 4/15/13, valued at $11,022,730), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $10,800,576) (Cost $10,800,000) $ 10,800,000 -------------- TOTAL INVESTMENT SECURITIES -- 100.5% (Cost $993,863,460) 1,274,730,056 -------------- OTHER ASSETS AND LIABILITIES -- (0.5)% (6,456,402) -------------- TOTAL NET ASSETS -- 100.0% $1,268,273,654 ============== Forward Foreign Currency Exchange Contracts Unrealized Gain Contracts to Sell Settlement Date Value (Loss) 24,298,365 AUD for USD 5/30/08 $22,832,698 $(114,941) 62,474,900 DKK for USD 5/30/08 13,075,698 4,216 11,076,094 Euro for USD 5/30/08 17,277,172 33,988 1,763,055,000 JPY for USD 5/30/08 16,983,852 (36,158) 16,125,175 NOK for USD 5/30/08 3,159,743 569 ----------- ---------- $73,329,163 $(112,326) =========== ========== (Value on Settlement Date $73,216,837) Notes to Schedule of Investments ADR = American Depositary Receipt AUD = Australian Dollar DKK = Danish Krone HOLDRs = Holding Company Depositary Receipts JPY = Japanese Yen NOK = Norwegian Krona ORD = Foreign Ordinary Share SPDR = Standard and Poor's Depositary Receipt USD = United States Dollar (1) Non-income producing. See Notes to Financial Statements. - ------ 11 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) ASSETS Investment securities, at value (cost of $993,863,460) $1,274,730,056 Cash 9,527 Receivable for investments sold 34,555,795 Receivable for forward foreign currency exchange contracts 38,773 Dividends and interest receivable 818,432 -------------- 1,310,152,583 -------------- LIABILITIES Payable for investments purchased 40,703,799 Payable for forward foreign currency exchange contracts 151,099 Accrued management fees 1,024,031 -------------- 41,878,929 -------------- NET ASSETS $1,268,273,654 ============== CAPITAL SHARES, $0.01 PAR VALUE Authorized 200,000,000 ============== Outstanding 43,705,535 ============== NET ASSET VALUE PER SHARE $29.02 ============== NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $ 935,712,713 Accumulated net investment loss (3,481,879) Undistributed net realized gain on investment and foreign currency transactions 55,322,616 Net unrealized appreciation on investments and translation of assets and liabilities in foreign currencies 280,720,204 -------------- $1,268,273,654 ============== See Notes to Financial Statements. - ------ 12 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) INVESTMENT INCOME (LOSS) INCOME: Dividends (net of foreign taxes withheld of $54,326) $ 2,588,789 Interest 227,835 -------------- 2,816,624 -------------- EXPENSES: Management fees 6,402,548 Directors' fees and expenses 14,538 Other expenses 3,722 -------------- 6,420,808 -------------- NET INVESTMENT INCOME (LOSS) (3,604,184) -------------- REALIZED AND UNREALIZED GAIN (LOSS) NET REALIZED GAINS (LOSS) ON: Investment transactions 65,459,485 Foreign currency transactions (5,536,867) -------------- 59,922,618 -------------- CHANGE IN NET UNREALIZED APPRECIATION (DEPRECIATION) ON: Investments (169,461,777) Translation of assets and liabilities in foreign currencies 107,707 -------------- (169,354,070) -------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (109,431,452) -------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(113,035,636) ============== See Notes to Financial Statements. - ------ 13 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Increase (Decrease) in Net Assets 2008 2007 OPERATIONS Net investment income (loss) $ (3,604,184) $ (6,683,330) Net realized gain (loss) 59,922,618 252,077,446 Change in net unrealized appreciation (depreciation) (169,354,070) 286,275,760 -------------- -------------- Net increase (decrease) in net assets resulting from operations (113,035,636) 531,669,876 -------------- -------------- CAPITAL SHARE TRANSACTIONS Proceeds from shares sold 5,980,357 11,497,937 Payments for shares redeemed (45,884,987) (106,533,236) -------------- -------------- Net increase (decrease) in net assets from capital share transactions (39,904,630) (95,035,299) -------------- -------------- NET INCREASE (DECREASE) IN NET ASSETS (152,940,266) 436,634,577 NET ASSETS Beginning of period 1,421,213,920 984,579,343 -------------- -------------- End of period $1,268,273,654 $1,421,213,920 ============== ============== Accumulated undistributed net investment income (loss) $(3,481,879) $122,505 ============== ============== TRANSACTIONS IN SHARES OF THE FUND Sold 206,730 468,391 Redeemed (1,578,669) (4,291,934) -------------- -------------- Net increase (decrease) in shares of the fund (1,371,939) (3,823,543) ============== ============== See Notes to Financial Statements. - ------ 14 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. Giftrust Fund (the fund) is one fund in a series issued by the corporation. The fund is diversified under the 1940 Act. The fund's investment objective is to seek long-term capital growth. The fund pursues its objective by investing primarily in equity securities of medium-sized and smaller companies that management believes will increase in value over time. The following is a summary of the fund's significant accounting policies. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the fund determines that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the fund to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. Certain countries impose taxes on realized gains on the sale of securities registered in their country. The fund records the foreign tax expense, if any, on an accrual basis. The realized and unrealized tax provision reduces the net realized gain (loss) on investment transactions and net unrealized appreciation (depreciation) on investments, respectively. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Distributions received on securities that represent a return of capital or capital gain are recorded as a reduction of cost of investments and/or as a realized gain. The fund estimates the components of distributions received that may be considered nontaxable distributions or capital gain distributions for income tax purposes. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. FOREIGN CURRENCY TRANSACTIONS -- All assets and liabilities initially expressed in foreign currencies are translated into U.S. dollars at prevailing exchange rates at period end. Purchases and sales of investment securities, dividend and interest income, and certain expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. For assets and liabilities, other than investments in securities, net realized and unrealized gains and losses from foreign currency translations arise from changes in currency exchange rates. Net realized and unrealized foreign currency exchange gains or losses occurring during the holding period of investment securities are a component of realized gain (loss) on investment transactions and unrealized appreciation (depreciation) on investments, respectively. Certain countries may impose taxes on the contract amount of purchases and sales of foreign currency contracts in their currency. The fund records the foreign tax expense, if any, as a reduction to the net realized gain (loss) on foreign currency transactions. FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS -- The fund may enter into forward foreign currency exchange contracts to facilitate transactions of securities denominated in a foreign currency or to hedge the fund's exposure to foreign currency exchange rate fluctuations. The net U.S. dollar value of foreign currency underlying all contractual commitments held by the fund and the resulting unrealized appreciation or depreciation are determined daily using prevailing exchange rates. The fund bears the risk of an unfavorable change in the foreign currency exchange rate underlying the forward contract. Additionally, losses may arise if the counterparties do not perform under the contract terms. - ------ 15 REPURCHASE AGREEMENTS -- The fund may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. The fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable the fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to the fund under each repurchase agreement. JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, the fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. INCOME TAX STATUS -- It is the fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The fund is no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the fund. In addition, in the normal course of business, the fund enters into contracts that provide general indemnifications. The fund's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the fund. The risk of material loss from such claims is considered by management to be remote. USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. 2. FEES AND TRANSACTIONS WITH RELATED PARTIES MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the fund with investment advisory and management services in exchange for a single, unified management fee (the fee). The Agreement provides that all expenses of the fund, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of the fund and paid monthly in arrears. The annual management fee for the fund is 1.00%. RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, American Century Investment Services, Inc., and the corporation's transfer agent, American Century Services, LLC. The fund is eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. Prior to December 12, 2007, the fund had a bank line of credit agreement with JPMorgan Chase Bank (JPMCB). JPMCB is a custodian of the fund and a wholly owned subsidiary of JPM. - ------ 16 3. INVESTMENT TRANSACTIONS Purchases and sales of investment securities, excluding short-term investments, for the six months ended April 30, 2008, were $983,746,840 and $1,029,260,353, respectively. 4. BANK LINE OF CREDIT Effective December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, has a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The fund may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The fund did not borrow from the line during the six months ended April 30, 2008. 5. RISK FACTORS The fund's investment process may result in high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. There are certain risks involved in investing in foreign securities. These risks include those resulting from future adverse political, social, and economic developments, fluctuations in currency exchange rates, the possible imposition of exchange controls, and other foreign laws or restrictions. Investing in emerging markets may accentuate these risks. 6. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: Federal tax cost of investments $998,022,963 ============= Gross tax appreciation of investments $291,190,991 Gross tax depreciation of investments (14,483,898) ------------- Net tax appreciation (depreciation) of investments $ 276,707,093 ============= The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. As of October 31, 2007, the fund had accumulated capital losses of $(2,183,412), which represent net capital loss carryovers that may be used to offset future realized capital gains for federal income tax purposes. The capital loss carryovers expire in 2010. 7. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 17 FINANCIAL HIGHLIGHTS Giftrust For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $31.53 $20.13 $17.28 $13.81 $14.04 $11.88 ------ ------ ------ ------ -------- -------- Income From Investment Operations Net Investment Income (Loss) (0.08) (0.14) (0.05) (0.08) (0.01)(2) (0.07)(2) Net Realized and Unrealized Gain (Loss) (2.43) 11.54 2.90 3.55 (0.22) 2.23 ------ ------ ------ ------ -------- -------- Total From Investment Operations (2.51) 11.40 2.85 3.47 (0.23) 2.16 ------ ------ ------ ------ -------- -------- Net Asset Value, End of Period $29.02 $31.53 $20.13 $17.28 $13.81 $14.04 ====== ====== ====== ====== ======== ======== TOTAL RETURN(3) (7.99)% 56.63% 16.49% 25.13% (1.64)% 18.18% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.00%(4) 1.00% 1.00% 1.00% 0.49%(5) 1.00% Ratio of Net Investment Income (Loss) to Average Net Assets (0.56)%(4) (0.57)% (0.22)% (0.46)% (0.09)%(5) (0.55)% Portfolio Turnover Rate 77% 147% 229% 223% 260% 140% Net Assets, End of Period (in millions) $1,268 $1,421 $985 $927 $865 $896 (1) For the six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. Total returns are calculated based on the net asset value on the last business day. (4) Annualized. (5) During a portion of the year ended October 31, 2004, the investment advisor voluntarily agreed to waive its management fee. The waiver was in effect from February 1, 2004 through July 31, 2004. Had fees not been waived the ratio of operating expenses to average net assets and the ratio of net investment income (loss) to average net assets would have been 1.00% and (0.60)%, respectively. See Notes to Financial Statements. - ------ 18 ADDITIONAL INFORMATION PROXY VOTING GUIDELINES American Century Investment Management, Inc., the fund's investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the fund. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The fund's Form N-Q is available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The fund also makes its complete schedule of portfolio holdings for the most recent quarter of its fiscal year available on its website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 19 INDEX DEFINITIONS THE FOLLOWING INDICES ARE USED TO ILLUSTRATE INVESTMENT MARKET, SECTOR, OR STYLE PERFORMANCE OR TO SERVE AS FUND PERFORMANCE COMPARISONS. They are not investment products available for purchase. THE RUSSELL 1000® INDEX IS A MARKET-CAPITALIZATION WEIGHTED, LARGE-CAP INDEX CREATED BY FRANK RUSSELL COMPANY TO MEASURE THE PERFORMANCE OF THE 1,000 LARGEST OF THE 3,000 LARGEST PUBLICLY TRADED U.S. companies, based on total market capitalization. THE RUSSELL 1000® GROWTH INDEX MEASURES THE PERFORMANCE OF THOSE RUSSELL 1000 INDEX COMPANIES (THE 1,000 LARGEST OF THE 3,000 LARGEST PUBLICLY TRADED U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. THE RUSSELL 1000® VALUE INDEX MEASURES THE PERFORMANCE OF THOSE RUSSELL 1000 INDEX COMPANIES (THE 1,000 LARGEST OF THE 3,000 LARGEST PUBLICLY TRADED U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. THE RUSSELL 2000® INDEX IS A MARKET-CAPITALIZATION WEIGHTED INDEX CREATED BY FRANK RUSSELL COMPANY TO MEASURE THE PERFORMANCE OF THE 2,000 SMALLEST OF THE 3,000 LARGEST PUBLICLY TRADED U.S. companies, based on total market capitalization. THE RUSSELL 2000® GROWTH INDEX MEASURES THE PERFORMANCE OF THOSE RUSSELL 2000 INDEX COMPANIES (THE 2,000 SMALLEST OF THE 3,000 LARGEST PUBLICLY TRADED U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. THE RUSSELL 2000® VALUE INDEX MEASURES THE PERFORMANCE OF THOSE RUSSELL 2000 INDEX COMPANIES (THE 2,000 SMALLEST OF THE 3,000 LARGEST PUBLICLY TRADED U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. THE RUSSELL MIDCAP® INDEX MEASURES THE PERFORMANCE OF THE 800 SMALLEST OF THE 1,000 LARGEST PUBLICLY TRADED U.S. companies, based on total market capitalization. THE RUSSELL MIDCAP® GROWTH INDEX MEASURES THE PERFORMANCE OF THOSE RUSSELL MIDCAP INDEX COMPANIES (THE 800 SMALLEST OF THE 1,000 LARGEST PUBLICLY TRADED U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. THE RUSSELL MIDCAP® VALUE INDEX MEASURES THE PERFORMANCE OF THOSE RUSSELL MIDCAP INDEX COMPANIES (THE 800 SMALLEST OF THE 1,000 LARGEST PUBLICLY TRADED U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. - ------ 20 [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE . . . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE . . . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS. .. . . . . . . . . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES . . . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF . . . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investments P.O. Box 419200 Kansas City, MO 64141-6200 PRSRT STD U.S. POSTAGE PAID AMERICAN CENTURY COMPANIES American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60500S
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS SELECT FUND CAPITAL GROWTH FUND FOCUSED GROWTH FUND FUNDAMENTAL EQUITY FUND PRESIDENT'S LETTER [photo of Jonathan Thomas] JONATHAN THOMAS Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® Select, Capital Growth, Focused Growth, and Fundamental Equity funds for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns . . . . . . . . . . . . . . . . . . . . . . 2 SELECT Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries and Types of Investments in Portfolio. . . . . . 6 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 7 CAPITAL GROWTH Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Five Industries and Types of Investments in Portfolio. . . . . . 13 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 14 FOCUSED GROWTH Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 19 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Top Five Industries and Types of Investments in Portfolio. . . . . . 20 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 21 FUNDAMENTAL EQUITY Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 26 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Top Five Industries and Types of Investments in Portfolio. . . . . . 27 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 28 Shareholder Fee Examples. . . . . . . . . . . . . . . . . . . . . . . 31 FINANCIAL STATEMENTS Statement of Assets and Liabilities . . . . . . . . . . . . . . . . . 34 Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . 36 Statement of Changes in Net Assets. . . . . . . . . . . . . . . . . . 37 Notes to Financial Statements . . . . . . . . . . . . . . . . . . . . 39 Financial Highlights. . . . . . . . . . . . . . . . . . . . . . . . . 48 OTHER INFORMATION Additional Information. . . . . . . . . . . . . . . . . . . . . . . . 72 Index Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 73 The opinions expressed in the Market Perspective and each of the Portfolio Commentaries reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of chief investment officer] By Steve Lurito, Chief Investment Officer, U.S. Growth Equity VOLATILITY UP, STOCKS DOWN The six months ended April 30, 2008 saw stocks produce negative returns as market volatility surged in the wake of the subprime credit crisis. In terms of the economy, tighter credit and the slumping housing market hurt consumer spending and confidence, leading many economists to suggest we're already in recession. Meanwhile, mounting losses hurt the banks, brokers, and other big institutional players important for the functioning of the financial markets. Facing dual economic and financial crises, the Federal Reserve (the Fed) took a series of extraordinary steps, slashing interest rates and acting as a lender of last resort not only for banks, but also major brokers. That helped stocks rebound, with many analysts suggesting that the mid-March buy-out of investment bank Bear Stearns -- in a deal arranged by the Fed -- put a floor under the market. RETURNS BY SIZE, STYLE MIXED Performance by size and style was mixed (see the accompanying table), reflecting the volatile trading during the period, when corporate earnings estimates were revised down sharply. Looking at returns by sector, energy shares were the only segment to produce positive results during the six months. At the other end of the spectrum, credit-related losses took a big bite out of earnings for financials stocks, which performed worst. Consumer discretionary shares also lagged badly, as did information technology stocks, which suffered from poor pricing and demand trends for chips and some consumer-related tech goods. OPPORTUNITY AMID VOLATILITY Despite the uncertainty surrounding the economy, we think growth-oriented stocks can perform well relative to value as proven earnings growth becomes scarce during economic slowdowns. And while we don't see an end to market volatility anytime soon, we view this dynamic as a natural part of the investing cycle -- and one that presents us with opportunities to build positions in what we believe are high-quality companies trading at attractive prices. Indeed, investors should rest assured that we're finding no shortage of companies demonstrating sustained earnings growth and business improvement. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% *Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE Select Total Returns as of April 30, 2008 Average Annual Returns 6 Since Inception months(1) 1 year 5 years 10 years Inception Date INVESTOR CLASS -9.41% 4.80% 7.36% 2.17% 13.12% 6/30/71(2) RUSSELL 1000 GROWTH INDEX(3) -9.28% -0.23% 9.52% 1.66% N/A(4) -- Institutional Class -9.32% 5.00% 7.56% 2.38% 5.58% 3/13/97 A Class(5) No sales charge* -9.55% 4.54% 7.09% 1.92% 3.40% With sales charge* -14.75% -1.48% 5.84% 1.32% 2.83% 8/8/97 B Class No sales charge* -9.88% 3.71% 6.28% -- 7.38% With sales charge* -14.88% -0.29% 6.12% -- 7.24% 1/31/03 C Class No sales charge* -9.87% 3.74% 6.28% -- 7.40% With sales charge* -10.70% 3.74% 6.28% -- 7.40% 1/31/03 R Class -9.65% 4.27% -- -- 3.21% 7/29/05 * Sales charges include initial sales charges and contingent deferred sales charges (CDSCs), as applicable. A Class shares have a 5.75% maximum initial sales charge for equity funds and may be subject to a maximum CDSC of 1.00%. B Class shares redeemed within six years of purchase are subject to a CDSC that declines from 5.00% during the first year after purchase to 0.00% the sixth year after purchase. C Class shares redeemed within 12 months of purchase are subject to a maximum CDSC of 1.00%. The SEC requires that mutual funds provide performance information net of maximum sales charges in all cases where charges could be applied. (1) Total returns for periods less than one year are not annualized. (2) Although the fund's actual inception date was 10/31/58, this inception date corresponds with the investment advisor's implementation of its current investment philosophy and practices. (3) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (4) Benchmark began 12/29/78. (5) Prior to September 4, 2007, the A Class was referred to as the Advisor Class. Performance, with sales charge, prior to that date has been adjusted to reflect the A Class's current sales charge. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing involves special risks, such as political instability and currency fluctuations. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 3 Select Growth of $10,000 Over 10 Years $10,000 investment made April 30, 1998
One-Year Returns Over 10 Years Periods ended April 30 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Investor Class 28.41% 13.38% -17.52% -15.63% -14.23% 19.70% -1.08% 7.37% 7.06% 4.80% Russell 1000 Growth Index 26.53% 27.58% -32.25% -20.10% -14.35% 21.65% 0.40% 15.18% 12.25% -0.23% Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing involves special risks, such as political instability and currency fluctuations. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 4 PORTFOLIO COMMENTARY Select Portfolio Managers: Keith Lee and Michael Li PERFORMANCE SUMMARY Select returned -9.41%* for the six months ended April 30, 2008, compared with the -9.28% return of its benchmark, the Russell 1000 Growth Index, and the - -9.64%** return of the S&P 500 Index, a broader market measure. As discussed in the Market Perspective on page 2, equity markets generally declined during the reporting period, as the subprime-mortgage-driven credit crisis spread to other areas of the economy, and rising energy and commodity prices increased inflation concerns. In this environment, both growth and value stocks lost ground across the capitalization spectrum. Although the portfolio underperformed its benchmark for the reporting period, it did derive gains relative to the benchmark in several sectors. Notably, stock selection in the materials, consumer discretionary, and financials sectors yielded relative strength. Those successes, though, were not enough to overcome the detrimental effects of poor stock selection in the information technology sector and a slight overweight allocation and stock selection in the health care sector. INFORMATION TECHNOLOGY LED DECLINE Within the information technology sector, portfolio overweight EMC was negatively affected by lower-than-expected growth guidance from its software subsidiary VMware. Although it delivered disappointing performance results for the reporting period, EMC remains a large holding in the portfolio as its long-term growth outlook and competitive position remain intact. An overweight stake in eBay also detracted from Select's performance as growth in the company's core ecommerce Web site continued to decelerate due to a deteriorating competitive position and a general maturation of the business. Given these trends, eBay is no longer a portfolio holding. HEALTH CARE LAGGED The health care sector was home to Select's most significant detractor from performance. Portfolio overweight Schering-Plough substantially underperformed due to cautious reviews of its cholesterol-lowering drug Vytorin by the American College of Cardiology and New England Journal of Medicine. Although we had previously viewed market concerns over this drug as unsubstantiated, the Select team ultimately exited the position given this new development. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Microsoft Corp. 3.4% 2.4% Cisco Systems Inc. 2.7% 3.4% Apple Inc. 2.6% 2.2% Transocean Inc.(1) 2.6% 2.6% Occidental Petroleum Corp. 2.4% 2.1% General Dynamics Corp. 2.4% 2.1% Thermo Fisher Scientific Inc. 2.3% 2.1% CVS/Caremark Corp. 2.3% 2.1% MEMC Electronic Materials Inc. 2.3% 4.1% Emerson Electric Co. 2.3% 2.0% (1) Transocean Inc. acquired GlobalSantaFe Corp. on 11/27/07. * All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. ** The S&P 500 Index returns for the one-, five- and 10-year periods ended April 30, 2008, were 8.23%, 10.62% and 3.89%, respectively. - ------ 5 Select MATERIALS LED PERFORMANCE The portfolio's overweight allocation to the materials sector reflected a focus on the chemicals group. Here, a stake in Mosaic yielded the largest positive contribution to absolute and relative portfolio returns as its share price climbed 76%. The fertilizer company continued to benefit from secularly higher demand in the fertilizer market, driven by a higher standard of living in emerging-market countries, a lower availability of farmland and a greater global focus on biofuels. ALTERNATIVE ENERGY HOLDINGS GAINED Alternative energy demand continued to drive up the share price for portfolio holding Vestas Wind Systems AS (Vestas). Denmark-based Vestas develops wind power systems that harness wind energy to create electricity. Its share price climbed 23% in the reporting period as oil prices continued to rise and global demand for clean energy accelerated. Strong electricity infrastructure spending and increasing demand for energy-efficient technologies also helped electric power company ABB Ltd. to contribute positively to Select's performance. Not constituents of the benchmark, both Vestas and ABB boosted relative portfolio returns. AVOIDING PITFALLS HELPED The financials sector continued to feel the adverse effects of the subprime mortgage market implosion and related credit crunch during the reporting period. Although the portfolio's exposure to the sector detracted from absolute returns, effective selection within the group resulted in strength relative to the benchmark. In particular, Select altogether avoided the diversified financial services, consumer finance, and thrifts and mortgage finance industries, which dragged down benchmark returns. OUTLOOK The reporting period was a difficult time for large-capitalization, growth and momentum-oriented investment styles. The Select fund's investment process, which emphasizes these characteristics, remained focused on the fundamental business prospects of its portfolio investments, regardless of short-term volatility. Going forward, we remain confident in our investment belief that stocks which exhibit high quality, accelerating fundamentals, positive relative strength, and attractive valuations will outperform in the long term. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Software 7.3% 6.1% Electrical Equipment 7.0% 7.4% Computers & Peripherals 6.9% 7.7% Semiconductors & Semiconductor Equipment 6.8% 7.3% Capital Markets 5.0% 3.8% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 84.4% 86.7% Foreign Common Stocks(1) 13.1% 12.0% TOTAL COMMON STOCKS 97.5% 98.7% Temporary Cash Investments 2.0% 1.7% Other Assets and Liabilities(2) 0.5% (0.4)% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. (2) Includes securities lending collateral and other assets and liabilities. - ------ 6 SCHEDULE OF INVESTMENTS Select APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 97.5% AEROSPACE & DEFENSE -- 3.4% 626,175 General Dynamics Corp. $ 56,618,746 379,602 Rockwell Collins 23,956,682 -------------- 80,575,428 -------------- BEVERAGES -- 4.6% 791,544 Coca-Cola Co. (The) 46,598,195 1,242,497 Diageo plc ORD 25,529,445 563,566 PepsiCo, Inc. 38,621,178 -------------- 110,748,818 -------------- BIOTECHNOLOGY -- 4.5% 779,817 Genzyme Corp.(1) 54,860,126 1,021,186 Gilead Sciences, Inc.(1) 52,856,587 -------------- 107,716,713 -------------- CAPITAL MARKETS -- 5.0% 1,100,642 Bank of New York Mellon Corp. (The) 47,910,946 350,954 Franklin Resources, Inc. 33,393,273 859,612 Invesco Ltd. 22,049,048 332,190 Morgan Stanley 16,144,434 -------------- 119,497,701 -------------- CHEMICALS -- 4.4% 311,780 Air Products and Chemicals, Inc. 30,688,505 198,581 Monsanto Co. 22,642,206 413,934 Mosaic Co. (The)(1) 50,711,054 -------------- 104,041,765 -------------- COMMUNICATIONS EQUIPMENT -- 2.7% 2,498,677 Cisco Systems Inc.(1) 64,066,078 -------------- COMPUTERS & PERIPHERALS -- 6.9% 360,991 Apple Inc.(1) 62,794,385 3,178,148 EMC Corp.(1) 48,943,479 1,136,618 Hewlett-Packard Co. 52,682,244 -------------- 164,420,108 -------------- CONSTRUCTION & ENGINEERING -- 1.1% 420,871 Foster Wheeler Ltd.(1) 26,805,274 -------------- ELECTRIC UTILITIES -- 2.0% 470,117 Edison International 24,526,004 280,939 Exelon Corporation 24,014,666 -------------- 48,540,670 -------------- Shares Value ELECTRICAL EQUIPMENT -- 7.0% 1,724,651 ABB Ltd. ADR $ 52,895,046 1,054,479 Emerson Electric Co. 55,107,073 285,071 Q-Cells AG ORD(1) 33,394,106 235,516 Vestas Wind Systems AS ORD(1) 25,860,271 -------------- 167,256,496 -------------- ENERGY EQUIPMENT & SERVICES -- 4.8% 399,373 National Oilwell Varco, Inc.(1) 27,337,082 266,685 Schlumberger Ltd. 26,815,177 418,057 Transocean Inc.(1) 61,646,685 -------------- 115,798,944 -------------- FOOD & STAPLES RETAILING -- 4.4% 1,384,146 CVS/Caremark Corp. 55,877,974 832,677 Wal-Mart Stores, Inc. 48,278,612 -------------- 104,156,586 -------------- FOOD PRODUCTS -- 1.0% 698,170 Unilever N.V. New York Shares 23,416,622 -------------- HEALTH CARE EQUIPMENT & SUPPLIES -- 2.6% 805,897 Baxter International Inc. 50,223,501 437,569 Hologic, Inc.(1) 12,772,639 -------------- 62,996,140 -------------- HEALTH CARE PROVIDERS & SERVICES -- 3.7% 530,969 Aetna Inc. 23,150,248 447,901 Henry Schein, Inc.(1) 24,800,278 509,291 Medco Health Solutions Inc.(1) 25,230,277 485,215 UnitedHealth Group Inc. 15,832,565 -------------- 89,013,368 -------------- HOTELS, RESTAURANTS & LEISURE -- 4.4% 873,021 McDonald's Corp. 52,014,591 1,309,373 Yum! Brands, Inc. 53,265,294 -------------- 105,279,885 -------------- HOUSEHOLD PRODUCTS -- 1.7% 568,728 Colgate-Palmolive Co. 40,209,070 -------------- INSURANCE -- 1.6% 583,447 Aflac Inc. 38,898,411 -------------- INTERNET & CATALOG RETAIL -- 1.7% 250,110 Amazon.com, Inc.(1) 19,666,149 858,841 Expedia Inc.(1) 21,694,324 -------------- 41,360,473 -------------- - ------ 7 Select Shares Value INTERNET SOFTWARE & SERVICES -- 1.9% 676,239 Alibaba.com Ltd. ORD(1) $ 1,249,507 75,955 Google Inc. Cl A(1) 43,620,196 -------------- 44,869,703 -------------- LIFE SCIENCES TOOLS & SERVICES -- 2.3% 968,966 Thermo Fisher Scientific Inc.(1) 56,074,062 -------------- MACHINERY -- 0.8% 229,656 Parker-Hannifin Corp. 18,338,032 -------------- MEDIA -- 1.8% 1,293,270 Walt Disney Co. (The) 41,940,746 -------------- METALS & MINING -- 1.7% 355,977 Freeport-McMoRan Copper & Gold, Inc. 40,492,384 -------------- MULTILINE RETAIL -- 0.6% 264,184 Kohl's Corp.(1) 12,905,388 -------------- OIL, GAS & CONSUMABLE FUELS -- 2.4% 702,263 Occidental Petroleum Corp. 58,435,304 -------------- PHARMACEUTICALS -- 0.8% 326,277 Allergan, Inc. 18,392,234 -------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 6.8% 478,399 ASML Holding N.V. ORD 13,694,631 1,922,898 Intel Corp. 42,803,709 1,439,773 Linear Technology Corp. 50,334,464 889,124 MEMC Electronic Materials Inc.(1) 55,988,139 -------------- 162,820,943 -------------- SOFTWARE -- 7.3% 681,474 Adobe Systems Inc.(1) 25,412,165 2,864,712 Microsoft Corp. 81,701,587 81,100 Nintendo Co., Ltd. ORD 44,529,161 1,155,407 Oracle Corp.(1) 24,090,236 -------------- 175,733,149 -------------- Shares Value SPECIALTY RETAIL -- 1.0% 715,627 TJX Companies, Inc. (The) $ 23,057,502 -------------- TOBACCO -- 1.9% 649,784 Altria Group Inc. 12,995,680 649,784 Philip Morris International Inc.(1) 33,158,478 -------------- 46,154,158 -------------- TRANSPORTATION INFRASTRUCTURE -- 0.7% 1,516,313 China Merchants Holdings International Co. Ltd. ORD 7,782,599 11,039,000 Hopewell Highway Infrastructure Ltd. ORD 8,796,242 -------------- 16,578,841 -------------- TOTAL COMMON STOCKS (Cost $2,003,261,298) 2,330,590,996 -------------- Temporary Cash Investments -- 2.0% Repurchase Agreement, Bank of America Securities, LLC, (collateralized by various U.S. Treasury obligations, 0.625%, 4/15/13, valued at $40,212,551), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $39,402,101) 39,400,000 Repurchase Agreement, Deutsche Bank Securities, Inc., (collateralized by various U.S. Treasury obligations, 3.125%, 4/15/09, valued at $8,976,448), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $8,800,469) 8,800,000 -------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $48,200,000) 48,200,000 -------------- TOTAL INVESTMENT SECURITIES -- 99.5% (Cost $2,051,461,298) 2,378,790,996 -------------- OTHER ASSETS AND LIABILITIES -- 0.5% 12,176,434 -------------- TOTAL NET ASSETS -- 100.0% $2,390,967,430 ============== - ------ 8 Select Forward Foreign Currency Exchange Contracts Unrealized Contracts to Sell Settlement Date Value Gain (Loss) 90,791,418 DKK for USD 5/30/08 $19,002,210 $ 9,191 22,315,290 Euro for USD 5/30/08 34,808,760 68,477 9,570,333 GBP for USD 5/30/08 18,999,312 62,112 2,347,845,000 JPY for USD 5/30/08 22,617,247 (48,151) ------------ ------------ $95,427,529 $ 91,629 ============ ============ (Value on Settlement Date $95,519,158) Notes to Schedule of Investments ADR = American Depositary Receipt DKK = Danish Krone GBP = British Pound JPY = Japanese Yen ORD = Foreign Ordinary Share USD = United States Dollar (1) Non-income producing. See Notes to Financial Statements. - ------ 9 PERFORMANCE Capital Growth Total Returns as of April 30, 2008 Average Annual Returns Since Inception 6 months(1) 1 year Inception Date A CLASS No sales charge* -6.26% 6.99% 7.27% With sales charge* -11.64% 0.80% 5.76% 2/27/04 RUSSELL 1000 GROWTH INDEX(2) -9.28% -0.23% 5.62% -- Investor Class -6.15% 7.20% 8.42% 7/29/05 Institutional Class -6.12% 7.42% 8.63% 7/29/05 B Class No sales charge* -6.60% 6.14% 6.47% With sales charge* -11.60% 2.14% 6.07% 2/27/04 C Class No sales charge* -6.60% 6.14% 6.47% With sales charge* -7.46% 6.14% 6.47% 2/27/04 R Class -6.38% 6.68% 7.89% 7/29/05 * Sales charges include initial sales charges and contingent deferred sales charges (CDSCs), as applicable. A Class shares have a 5.75% maximum initial sales charge for equity funds and may be subject to a maximum CDSC of 1.00%. B Class shares redeemed within six years of purchase are subject to a CDSC that declines from 5.00% during the first year after purchase to 0.00% the sixth year after purchase. C Class shares redeemed within 12 months of purchase are subject to a maximum CDSC of 1.00%. The SEC requires that mutual funds provide performance information net of maximum sales charges in all cases where charges could be applied. (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Unless otherwise indicated, performance reflects A Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 10 Capital Growth Growth of $10,000 Over Life of Class $10,000 investment made February 27, 2004
One-Year Returns Over Life of Class Periods ended April 30 2004* 2005 2006 2007 2008 A Class (no sales charge) -4.20% 4.49% 12.69% 11.08% 6.99% Russell 1000 Growth Index -3.00% 0.40% 15.18% 12.25% -0.23% * From 2/27/04, the A Class's inception date. Not annualized. Capital Growth A Class's initial investment is $9,425 to reflect the maximum 5.75% initial sales charge. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Unless otherwise indicated, performance reflects A Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 11 PORTFOLIO COMMENTARY Capital Growth Portfolio Managers: Greg Woodhams and Prescott LeGard PERFORMANCE SUMMARY Capital Growth returned -6.26%* during the six months ended April 30, 2008. By comparison, the Russell 1000 Growth Index returned -9.28%, while the average return for the Lipper Large-Cap Growth Funds category was -10.15%.** Better measures of the portfolio's performance are its longer-term results compared with the index, which can be seen on page 10. Looking at the portfolio's absolute return, performance was driven by holdings in the energy sector; materials and consumer staples also made positive contributions. Information technology holdings were the leading detractors. In terms of Capital Growth's performance relative to the Russell 1000 Growth Index, outperformance was driven by stock selection among health care and consumer discretionary stocks; holdings in the consumer staples, financials, and energy sectors were other notable contributors. Stock picks in information technology detracted most from relative results. HEALTH CARE LED CONTRIBUTORS Health care stocks contributed most to the portfolio's return relative to the benchmark. Performance was driven by positioning in the pharmaceutical industry. Capital Growth had no exposure to Merck, and managers eliminated Schering-Plough at the end of 2007 after sizable gains. This helped relative results after both stocks suffered in March from questions about the efficacy of a jointly marketed cholesterol drug. Positioning in health care equipment & supplies firms was another source of relative strength. The leading contributor to return in this space was Becton Dickinson, which benefited from increased usage around the world of its safety devices that reduce accidents and infection among patients and caregivers. CONSUMER DISCRETIONARY HELPED In the consumer discretionary sector, outperformance was a result of stock selection in the specialty retail and internet & catalog retailing segments. It also helped to underweight stocks in the hotels, restaurants & leisure category. Key contributions in the sector came from specialty retailers Urban Outfitters and The TJX Companies. Internet travel portal priceline.com was another leading contributor, helped by the acquisition of overseas vacation properties and growth in its international business. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Apple Inc. 3.3% 4.1% Honeywell International Inc. 2.5% 1.1% QUALCOMM Inc. 2.5% 0.8% Emerson Electric Co. 2.3% 1.9% Becton, Dickinson & Co. 2.2% 2.3% Microsoft Corp. 2.2% 3.7% Apache Corp. 2.2% 2.0% Coca-Cola Co. (The) 2.2% 2.6% Devon Energy Corp. 2.1% 1.8% BorgWarner, Inc. 2.1% 2.0% * All fund returns referenced in this commentary are for A Class shares and are not reduced by sales charges. A Class shares are subject to a maximum sales charge of 5.75%. Had the sales charge been applied, returns would be lower than those shown. Total returns for periods less than one year are not annualized. ** The Lipper Large-Cap Growth Funds average returns for the one-year and since inception periods ended April 30, 2008, were 1.73% and 5.68%, respectively. - ------ 12 Capital Growth OTHER KEY CONTRIBUTORS Three of the five largest contributors to portfolio performance were oil & gas exploration and production firms Devon Energy, Apache, and XTO Energy. These companies benefited from surging oil prices and reserve growth in the U.S. and overseas. These shares also saw demand from investors who wanted exposure to the energy sector but preferred to avoid the big, integrated firms that are less closely tied to the price of oil and are seeing declining margins in their refining businesses. IT, INDUSTRIALS DETRACTED Stock selection among information technology stocks detracted most from relative return, led by holdings in the software, internet software & services, and IT services industries. Indeed, the sector was home to the five largest individual detractors from relative performance, led by enterprise software firm VMWare. This overweight position was eliminated after the firm gave a surprisingly poor profit forecast. The number-two detractor was IBM, which reported good results and bought back stock during the period. The portfolio had no exposure to the stock. With the exception of utilities (a tiny portion of the fund and index), industrials was the only other sector to detract from relative performance, as it hurt to be significantly underweight the road & rail and air freight industries. The leading detractor in the sector was an overweight position in Continental Airlines, as investors worried about the effects of rising fuel costs and a slowing economy. We eliminated the position. OUTLOOK The investment process focuses on large companies exhibiting sustainable improvement in their businesses. We believe that owning such companies will generate outperformance over time versus the Russell 1000 Growth Index and the other funds in the large-growth peer group. As a result, the portfolio's sector and industry selection are primarily a result of identifying what we believe to be superior individual securities. As of April 30, 2008, we found opportunity in the health care sector, the portfolio's largest overweight position. The most notable sector underweight was in information technology shares. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Health Care Equipment & Supplies 8.0% 8.8% Communications Equipment 7.9% 7.1% Aerospace & Defense 6.3% 3.1% Oil, Gas & Consumable Fuels 6.3% 7.1% Semiconductors & Semiconductor Equipment 5.5% 3.4% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 91.8% 95.2% Foreign Common Stocks(1) 6.1% 4.3% TOTAL COMMON STOCKS 97.9% 99.5% Other Assets and Liabilities(2) 2.1% 0.5% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. (2) Includes securities lending collateral and other assets and liabilities. - ------ 13 SCHEDULE OF INVESTMENTS Capital Growth APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 97.9% AEROSPACE & DEFENSE -- 6.3% 3,348 Honeywell International Inc. $ 198,872 2,371 Raytheon Co. 151,673 2,110 United Technologies Corp. 152,912 ----------- 503,457 ----------- AUTO COMPONENTS -- 2.1% 3,424 BorgWarner, Inc. 168,290 ----------- BEVERAGES -- 3.9% 2,933 Coca-Cola Co. (The) 172,665 1,988 PepsiCo, Inc. 136,238 ----------- 308,903 ----------- BIOTECHNOLOGY -- 1.4% 499 Genentech, Inc.(1) 34,032 1,472 Gilead Sciences, Inc.(1) 76,191 ----------- 110,223 ----------- BUILDING PRODUCTS -- 0.2% 1,072 Masco Corp. 19,521 ----------- CAPITAL MARKETS -- 3.5% 4,921 Invesco Ltd. 126,224 1,066 Northern Trust Corp. 79,001 2,209 Waddell & Reed Financial, Inc. Cl A 74,797 ----------- 280,022 ----------- CHEMICALS -- 1.7% 1,188 Monsanto Co. 135,456 ----------- COMMUNICATIONS EQUIPMENT -- 7.9% 3,170 ADC Telecommunications, Inc.(1) 44,443 872 Ciena Corp.(1) 29,482 4,762 Cisco Systems Inc.(1) 122,098 4,832 Corning Inc. 129,063 5,465 JDS Uniphase Corp.(1) 78,204 4,557 QUALCOMM Inc. 196,816 227 Research In Motion Ltd.(1) 27,610 ----------- 627,716 ----------- COMPUTERS & PERIPHERALS -- 4.5% 1,515 Apple Inc.(1) 263,534 4,661 Dell Inc.(1) 86,834 652 EMC Corp.(1) 10,041 ----------- 360,409 ----------- DIVERSIFIED -- 1.1% 1,523 iShares Russell 1000 Growth Index Fund 87,512 ----------- Shares Value DIVERSIFIED FINANCIAL SERVICES -- 1.2% 99 CME Group Inc. $ 45,288 321 IntercontinentalExchange Inc.(1) 49,803 ----------- 95,091 ----------- ELECTRIC UTILITIES -- 0.5% 561 FPL Group, Inc. 37,189 ----------- ELECTRICAL EQUIPMENT -- 3.9% 2,311 Cooper Industries, Ltd. Cl A 97,963 3,560 Emerson Electric Co. 186,046 108 First Solar Inc.(1) 31,535 ----------- 315,544 ----------- ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.8% 6,024 Flextronics International Ltd.(1) 62,589 ----------- ENERGY EQUIPMENT & SERVICES -- 2.9% 761 Helmerich & Payne, Inc. 40,904 835 Schlumberger Ltd. 83,959 742 Transocean Inc.(1) 109,415 ----------- 234,278 ----------- FOOD & STAPLES RETAILING -- 3.9% 2,018 Costco Wholesale Corp. 143,783 2,884 Wal-Mart Stores, Inc. 167,214 ----------- 310,997 ----------- FOOD PRODUCTS -- 0.8% 128 Nestle SA ORD 61,417 ----------- HEALTH CARE EQUIPMENT & SUPPLIES -- 8.0% 2,098 Baxter International Inc. 130,747 1,988 Becton, Dickinson & Co. 177,726 858 C.R. Bard, Inc. 80,798 2,033 DENTSPLY International Inc. 79,023 372 Gen-Probe Inc.(1) 20,966 312 Idexx Laboratories, Inc.(1) 16,598 181 Intuitive Surgical Inc.(1) 52,356 1,620 Medtronic, Inc. 78,862 ----------- 637,076 ----------- HEALTH CARE PROVIDERS & SERVICES -- 0.9% 639 Laboratory Corp. of America Holdings(1) 48,321 700 VCA Antech Inc.(1) 22,659 ----------- 70,980 ----------- - ------ 14 Capital Growth Shares Value HOTELS, RESTAURANTS & LEISURE -- 1.3% 2,969 Darden Restaurants, Inc. $ 105,637 ----------- HOUSEHOLD DURABLES -- 0.7% 1,095 KB Home(2) 24,638 464 Mohawk Industries Inc.(1)(2) 35,352 ----------- 59,990 ----------- HOUSEHOLD PRODUCTS -- 1.3% 1,504 Procter & Gamble Co. (The) 100,843 ----------- INDUSTRIAL CONGLOMERATES -- 0.3% 863 General Electric Co. 28,220 ----------- INSURANCE -- 1.1% 1,602 Chubb Corp. 84,858 ----------- INTERNET & CATALOG RETAIL -- 0.5% 309 priceline.com Inc.(1)(2) 39,441 ----------- INTERNET SOFTWARE & SERVICES -- 0.9% 122 Google Inc. Cl A(1) 70,063 ----------- IT SERVICES -- 1.2% 500 Global Payments Inc. 22,130 909 Visa Inc. Cl A(1) 75,856 ----------- 97,986 ----------- LIFE SCIENCES TOOLS & SERVICES -- 2.3% 236 Illumina, Inc.(1) 18,382 879 QIAGEN N.V.(1) 19,523 2,459 Thermo Fisher Scientific Inc.(1) 142,302 ----------- 180,207 ----------- MACHINERY -- 2.9% 362 Caterpillar Inc. 29,641 1,502 Eaton Corp. 131,935 725 Valmont Industries, Inc. 71,384 ----------- 232,960 ----------- MEDIA -- 1.8% 3,837 Viacom Inc. Cl B(1) 147,494 ----------- METALS & MINING -- 1.6% 1,095 Freeport-McMoRan Copper & Gold, Inc. 124,556 ----------- MULTILINE RETAIL -- 1.0% 3,927 Family Dollar Stores, Inc. 84,038 ----------- OIL, GAS & CONSUMABLE FUELS -- 6.3% 1,297 Apache Corp. 174,679 1,494 Devon Energy Corp. 169,420 145 EOG Resources Inc. 18,920 2,260 XTO Energy Inc. 139,804 ----------- 502,823 ----------- Shares Value PHARMACEUTICALS -- 3.3% 2,750 Allergan, Inc. $ 155,018 1,536 Novo Nordisk AS B Shares ORD 105,893 ----------- 260,911 ----------- REAL ESTATE INVESTMENT TRUSTS (REITS) -- 0.6% 421 Digital Realty Trust Inc. 16,314 876 Weingarten Realty Investors 32,315 ----------- 48,629 ----------- ROAD & RAIL -- 0.4% 212 Union Pacific Corp. 30,780 ----------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 5.5% 2,105 Altera Corp. 44,794 1,629 Applied Materials, Inc. 30,397 6,577 Intel Corp. 146,404 3,856 Linear Technology Corp. 134,806 578 MEMC Electronic Materials Inc.(1) 36,397 2,005 Xilinx, Inc. 49,664 ----------- 442,462 ----------- SOFTWARE -- 4.2% 647 Electronic Arts Inc.(1) 33,301 6,189 Microsoft Corp. 176,510 3,123 Oracle Corp.(1) 65,115 974 Salesforce.com Inc.(1) 64,995 ----------- 339,921 ----------- SPECIALTY RETAIL -- 3.8% 1,318 Advance Auto Parts, Inc. 45,708 4,141 Lowe's Companies, Inc. 104,312 931 TJX Companies, Inc. (The) 29,997 3,528 Urban Outfitters Inc.(1) 120,834 ----------- 300,851 ----------- WIRELESS TELECOMMUNICATION SERVICES -- 1.4% 2,606 American Tower Corp. Cl A(1) 113,153 ----------- TOTAL COMMON STOCKS (Cost $7,093,008) 7,822,493 ----------- - ------ 15 Capital Growth Value Temporary Cash Investments -- Securities Lending Collateral(3) -- 1.3% Repurchase Agreement, Barclays Capital Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.98%, dated 4/30/08, due 5/1/08 (Delivery value $22,496) $ 22,495 Repurchase Agreement, BNP Paribas Securities Corp., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.99%, dated 4/30/08, due 5/1/08 (Delivery value $20,001) 20,000 Repurchase Agreement, Deutsche Bank Securities Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $20,001) 20,000 Value Repurchase Agreement, Lehman Brothers Inc. / Lehman Brothers Commercial Paper Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 2.39%, dated 4/30/08, due 5/1/08 (Delivery value $20,001) $ 20,000 Repurchase Agreement, Morgan Stanley & Co. Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $20,001) 20,000 ----------- TOTAL TEMPORARY CASH INVESTMENTS -- SECURITIES LENDING COLLATERAL (Cost $102,495) 102,495 ----------- TOTAL INVESTMENT SECURITIES -- 99.2% (Cost $7,195,503) 7,924,988 ----------- OTHER ASSETS AND LIABILITIES -- 0.8% 60,542 ----------- TOTAL NET ASSETS -- 100.0% $ 7,985,530 =========== Forward Foreign Currency Exchange Contracts Unrealized Contracts to Sell Settlement Date Value Gain (Loss) 44,083 CHF for USD 5/30/08 $ 42,578 $113 333,230 DKK for USD 5/30/08 69,743 22 -------- -------- $112,321 $135 ======== ======== (Value on Settlement Date $112,456) Notes to Schedule of Investments CHF = Swiss Franc DKK = Danish Krone ORD = Foreign Ordinary Share USD = United States Dollar (1) Non-income producing. (2) Security, or a portion thereof, was on loan as of April 30, 2008. (3) Investments represent purchases made by the lending agent with cash collateral received through securities lending transactions. See Notes to Financial Statements. - ------ 16 PERFORMANCE Focused Growth Total Returns as of April 30, 2008 Average Annual Returns Since Inception 6 months(1) 1 year Inception Date INVESTOR CLASS -3.94% 4.74% 8.05% 2/28/05 RUSSELL 1000 GROWTH INDEX(2)(3) -9.28% -0.23% 7.09% -- BLENDED INDEX -9.45% -2.47% 6.82% -- S&P 500 INDEX(2) -9.64% -4.68% 6.53% -- Institutional Class -3.89% -- -1.29%(1) 9/28/07 A Class No sales charge* -4.11% -- -1.59%(1) With sales charge* -9.63% -- -7.27%(1) 9/28/07 B Class No sales charge* -4.48% -- -2.05%(1) With sales charge* -9.48% -- -7.05%(1) 9/28/07 C Class No sales charge* -4.48% -- -2.05%(1) With sales charge* -5.33% -- -2.92%(1) 9/28/07 R Class -4.20% -- -1.69%(1) 9/28/07 * Sales charges include initial sales charges and contingent deferred sales charges (CDSCs), as applicable. A Class shares have a 5.75% maximum initial sales charge for equity funds and may be subject to a maximum CDSC of 1.00%. B Class shares redeemed within six years of purchase are subject to a CDSC that declines from 5.00% during the first year after purchase to 0.00% the sixth year after purchase. C Class shares redeemed within 12 months of purchase are subject to a maximum CDSC of 1.00%. The SEC requires that mutual funds provide performance information net of maximum sales charges in all cases where charges could be applied. (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (3) In March of 2008, the fund's benchmark changed from the blended index to the Russell 1000 Growth Index. The fund's investment advisor believes this index better represents the fund's portfolio composition. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. The fund's investment approach may also result in high portfolio turnover, which could mean high transaction costs, affecting both performance and capital gains tax liabilities to investors. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 17 Focused Growth Growth of $10,000 Over Life of Class $10,000 investment made February 28, 2005
One-Year Returns Over Life of Class Periods ended April 30 2005* 2006 2007 2008 Investor Class -3.50% 17.00% 8.08% 4.74% Russell 1000 Growth Index -3.69% 15.18% 12.25% -0.23% Blended index -3.66% 15.31% 13.75% -2.47% S&P 500 Index -3.63% 15.42% 15.24% -4.68% *From 2/28/05, the Investor Class's inception date. Not annualized. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. The fund's investment approach may also result in high portfolio turnover, which could mean high transaction costs, affecting both performance and capital gains tax liabilities to investors. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 18 PORTFOLIO COMMENTARY Focused Growth Portfolio Managers: Greg Woodhams and Joe Reiland PERFORMANCE SUMMARY Focused Growth returned -3.94%* during the six months ended April 30, 2008. By comparison, the Russell 1000 Growth Index returned -9.28%, while the average return for the Lipper Large-Cap Growth Funds category was -10.15%.** Better measures of the portfolio's performance are its longer-term results compared with the index, which can be seen on page 17. Looking at the portfolio's absolute return, performance was driven by holdings in the energy sector. Information technology holdings were the leading detractors. In terms of Focused Growth's return relative to the Russell 1000 Growth Index, outperformance was driven by selection among health care shares. Stock picks in the energy, consumer discretionary, and financials sectors also contributed. Positioning in the consumer staples and materials sectors detracted most from relative results. HEALTH CARE LED CONTRIBUTORS Health care stocks contributed most to the portfolio's return relative to the benchmark, led by health care equipment & supplies firms. The leading contributor to return for the six months was Becton Dickinson, which benefited from increased usage around the world of its safety devices that reduce accidents and infection among patients and caregivers. Other key contributors here were Baxter International, Alcon, and DENTSPLY International. Performance also benefited from positioning in the pharmaceutical industry, led by an overweight in Novo Nordisk AS, which gained share in insulin analogs around the world. In addition, the portfolio had no exposure to Merck and an underweight position in Schering-Plough. This helped relative results after both stocks suffered from questions about the efficacy of a jointly marketed cholesterol drug. ENERGY COMPANIES WERE KEY The top three contributors to performance for the period were oil & gas exploration and production firms Apache, Devon Energy, and XTO Energy. They benefited from surging oil prices and reserve growth in the U.S. and overseas. These shares also saw demand from investors who wanted exposure to the energy sector but preferred to avoid the big, integrated firms that are less closely tied to the price of oil and are seeing declining margins in their refining businesses. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Apple Inc. 4.5% 3.6% QUALCOMM Inc. 3.2% 0.7% Honeywell International Inc. 3.1% 1.1% Proctor & Gamble Co. (The) 3.0% 0.8% Costco Wholesale Corp. 3.0% -- United Technologies Corp. 2.9% 3.7% Apache Corp. 2.8% 4.3% Baxter International Inc. 2.8% 3.9% BorgWarner, Inc. 2.8% 3.5% Invesco Ltd. 2.8% -- * All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. ** The Lipper Large-Cap Growth Funds average returns for the one-year and since inception periods ended April 30, 2008, were 1.73% and 8.28%, respectively. - ------ 19 Focused Growth OTHER SOURCES OF STRENGTH In the consumer discretionary sector, outperformance was a result of stock selection among specialty retail names, led by The TJX Companies and Urban Outfitters. It also helped to underweight stocks in the hotels, restaurants & leisure category. Internet travel portal priceline.com was another leading contributor in the sector, helped by the acquisition of overseas vacation properties and growth in its international business. In the financials sector, the key theme explaining the portfolio's outperformance was an overweight to asset managers and other capital-market related names. At the same time, it helped to underweight the poor-performing consumer finance and diversified financial services industries. The leading contributor in this sector was financial services firm Northern Trust, which reported record earnings during the period on strength in its custody bank, investment management, and foreign exchange trading arms. LEADING DETRACTORS The portfolio's underweight position in the defensive consumer staples sector detracted from performance, as these stocks held up relatively well during a difficult period for equities. In particular, the portfolio had no exposure to Wal-Mart, making this stock the leading detractor from relative results. It was a similar story in materials, as the portfolio was underweight one of only two sectors in the index to have a positive return. OUTLOOK The investment process focuses on large companies exhibiting sustainable improvement in their businesses. We believe that owning such companies will generate outperformance over time versus the Russell 1000 Growth Index and the other funds in the large-growth peer group. As a result, the portfolio's sector and industry selection are primarily a result of identifying what we believe to be superior individual securities. As of April 30, 2008, we found opportunity in the industrial sector, the portfolio's largest overweight position. The most notable sector underweight was in information technology shares. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Health Care Equipment & Supplies 8.5% 14.2% Aerospace & Defense 8.3% 4.8% Communications Equipment 7.5% 6.7% Oil, Gas & Consumable Fuels 7.0% 10.9% Capital Markets 5.9% 5.8% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 92.1% 94.0% Foreign Common Stocks(1) 5.8% 4.1% TOTAL COMMON STOCKS 97.9% 98.1% Temporary Cash Investments 3.0% 0.7% Other Assets and Liabilities(2) (0.9)% 1.2% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. (2) Includes securities lending collateral and other assets and liabilities. - ------ 20 SCHEDULE OF INVESTMENTS Focused Growth APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 97.9% AEROSPACE & DEFENSE -- 8.3% 6,918 Honeywell International Inc. $ 410,930 4,863 Raytheon Co. 311,086 5,337 United Technologies Corp. 386,772 ------------ 1,108,788 ------------ AUTO COMPONENTS -- 2.8% 7,554 BorgWarner, Inc. 371,279 ------------ BEVERAGES -- 1.7% 3,758 Coca-Cola Co. (The) 221,233 ------------ BIOTECHNOLOGY -- 1.3% 3,384 Gilead Sciences, Inc.(1) 175,156 ------------ CAPITAL MARKETS -- 5.9% 14,455 Invesco Ltd. 370,771 4,695 Northern Trust Corp. 347,946 2,082 Waddell & Reed Financial, Inc. Cl A 70,497 ------------ 789,214 ------------ CHEMICALS -- 0.4% 500 Monsanto Co. 57,010 ------------ COMMUNICATIONS EQUIPMENT -- 7.5% 9,480 ADC Telecommunications, Inc.(1) 132,910 2,213 Ciena Corp.(1) 74,822 2,461 Corning Inc. 65,733 19,614 JDS Uniphase Corp.(1) 280,676 9,981 QUALCOMM Inc. 431,079 130 Research In Motion Ltd.(1) 15,812 ------------ 1,001,032 ------------ COMPUTERS & PERIPHERALS -- 5.1% 3,429 Apple Inc.(1) 596,474 5,387 EMC Corp.(1) 82,960 ------------ 679,434 ------------ ELECTRIC UTILITIES -- 0.4% 880 FPL Group, Inc. 58,335 ------------ ELECTRICAL EQUIPMENT -- 5.2% 7,884 Cooper Industries, Ltd. Cl A 334,203 6,745 Emerson Electric Co. 352,493 ------------ 686,696 ------------ ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.7% 9,050 Flextronics International Ltd.(1) 94,030 ------------ ENERGY EQUIPMENT & SERVICES -- 1.5% 1,326 Transocean Inc.(1) 195,532 ------------ Shares Value FOOD & STAPLES RETAILING -- 3.0% 5,620 Costco Wholesale Corp. $ 400,425 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 8.5% 6,013 Baxter International Inc. 374,731 3,789 Becton, Dickinson & Co. 338,737 1,495 C.R. Bard, Inc. 140,784 6,406 DENTSPLY International Inc. 249,001 69 Intuitive Surgical Inc.(1) 19,959 ------------ 1,123,212 ------------ HOTELS, RESTAURANTS & LEISURE -- 2.7% 10,002 Darden Restaurants, Inc. 355,871 ------------ HOUSEHOLD DURABLES -- 0.4% 2,504 KB Home(2) 56,340 ------------ HOUSEHOLD PRODUCTS -- 3.0% 5,999 Procter & Gamble Co. (The) 402,233 ------------ INSURANCE -- 2.6% 6,517 Chubb Corp. 345,205 ------------ INTERNET & CATALOG RETAIL -- 0.5% 489 priceline.com Inc.(1)(2) 62,416 ------------ IT SERVICES -- 0.4% 666 Visa Inc. Cl A(1) 55,578 ------------ LIFE SCIENCES TOOLS & SERVICES -- 2.7% 6,140 Thermo Fisher Scientific Inc.(1) 355,322 ------------ MACHINERY -- 2.6% 3,888 Eaton Corp. 341,522 ------------ MEDIA -- 2.7% 9,262 Viacom Inc. Cl B(1) 356,031 ------------ METALS & MINING -- 2.5% 2,963 Freeport-McMoRan Copper & Gold, Inc. 337,041 ------------ MULTILINE RETAIL -- 1.7% 10,303 Family Dollar Stores, Inc. 220,484 ------------ OIL, GAS & CONSUMABLE FUELS -- 7.0% 2,796 Apache Corp. 376,566 3,218 Devon Energy Corp. 364,921 3,004 XTO Energy Inc. 185,827 ------------ 927,314 ------------ PHARMACEUTICALS -- 3.8% 3,790 Allergan, Inc. 213,642 4,202 Novo Nordisk AS B Shares ORD(2) 289,690 ------------ 503,332 ------------ - ------ 21 Focused Growth Shares Value SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 5.7% 12,837 Intel Corp. $ 285,752 10,040 Linear Technology Corp. 350,998 1,863 MEMC Electronic Materials Inc.(1) 117,313 ------------ 754,063 ------------ SOFTWARE -- 4.1% 4,196 Microsoft Corp. 119,670 11,494 Oracle Corp.(1) 239,650 2,832 Salesforce.com Inc.(1) 188,979 ------------ 548,299 ------------ SPECIALTY RETAIL -- 2.6% 3,552 TJX Companies, Inc. (The) 114,445 6,797 Urban Outfitters Inc.(1) 232,798 ------------ 347,243 ------------ WIRELESS TELECOMMUNICATION SERVICES -- 0.6% 1,807 American Tower Corp. Cl A(1) 78,460 ------------ TOTAL COMMON STOCKS (Cost $12,106,897) 13,008,130 ------------ Principal Amount Temporary Cash Investments -- 3.0% $400,000 FHLB Discount Notes, 1.75%, 5/1/08(3) (Cost $400,000) 400,000 ------------ Value Temporary Cash Investments -- Securities Lending Collateral(4) -- 2.0% Repurchase Agreement, Barclays Capital Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.98%, dated 4/30/08, due 5/1/08 (Delivery value $64,257) $64,253 Repurchase Agreement, BNP Paribas Securities Corp., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.99%, dated 4/30/08, due 5/1/08 (Delivery value $50,003) 50,000 Repurchase Agreement, Deutsche Bank Securities Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $50,003) 50,000 Repurchase Agreement, Lehman Brothers Inc. / Lehman Brothers Commercial Paper Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 2.39%, dated 4/30/08, due 5/1/08 (Delivery value $50,003) 50,000 Repurchase Agreement, Morgan Stanley & Co. Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $50,003) 50,000 ------------ TOTAL TEMPORARY CASH INVESTMENTS -- SECURITIES LENDING COLLATERAL (Cost $264,253) 264,253 ------------ TOTAL INVESTMENT SECURITIES -- 102.9% (Cost $12,771,150) 13,672,383 ------------ OTHER ASSETS AND LIABILITIES -- (2.9)% (390,116) ------------ TOTAL NET ASSETS -- 100.0% $ 13,282,267 ============ - ------ 22 Focused Growth Forward Foreign Currency Exchange Contracts Contracts to Sell Settlement Date Value Unrealized Gain (Loss) 905,951 DKK for USD 5/30/08 $189,611 $97 ========= ========= (Value on Settlement Date $189,708) Notes to Schedule of Investments DKK = Danish Krone FHLB = Federal Home Loan Bank ORD = Foreign Ordinary Share USD = United States Dollar (1) Non-income producing. (2) Security, or a portion thereof, was on loan as of April 30, 2008. (3) The rate indicated is the yield to maturity at purchase. (4) Investments represent purchases made by the lending agent with cash collateral received through securities lending transactions. See Notes to Financial Statements. - ------ 23 PERFORMANCE Fundamental Equity Total Returns as of April 30, 2008 Average Annual Returns Since Inception 6 months(1) 1 year Inception Date A CLASS No sales charge* -8.91% -1.34% 12.49% With sales charge* -14.12% -7.01% 10.56% 11/30/04 S&P 500 INDEX(2) -9.64% -4.68% 6.96% -- Investor Class -8.79% -1.09% 12.50% 7/29/05 Institutional Class -8.73% -0.90% 12.69% 7/29/05 B Class No sales charge* -9.26% -2.10% 11.63% With sales charge* -14.26% -6.10% 10.95% 11/30/04 C Class No sales charge* -9.32% -2.10% 11.63% With sales charge* -10.21% -2.10% 11.63% 11/30/04 R Class -9.10% -1.66% 11.90% 7/29/05 * Sales charges include initial sales charges and contingent deferred sales charges (CDSCs), as applicable. A Class shares have a 5.75% maximum initial sales charge for equity funds and may be subject to a maximum CDSC of 1.00%. B Class shares redeemed within six years of purchase are subject to a CDSC that declines from 5.00% during the first year after purchase to 0.00% the sixth year after purchase. C Class shares redeemed within 12 months of purchase are subject to a maximum CDSC of 1.00%. The SEC requires that mutual funds provide performance information net of maximum sales charges in all cases where charges could be applied. (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Fund performance to date was affected by investments in initial public offerings (IPOs), non-U.S. stocks, and small- and mid-cap stocks. IPOs and smaller stocks may have less impact on the fund's performance as its assets grow. Performance over a longer period of time is more meaningful than short-term performance. . Unless otherwise indicated, performance reflects A Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 24 Fundamental Equity Growth of $10,000 Over Life of Class $10,000 investment made November 30, 2004
One-Year Returns Over Life of Class Periods ended April 30 2005* 2006 2007 2008 A Class (no sales charge) -0.20% 23.97% 22.49% -1.34% S&P 500 Index -0.74% 15.42% 15.24% -4.68% * From 11/30/04, the A Class's inception date. Not annualized. Fundamental Equity A Class's initial investment is $9,425 to reflect the maximum 5.75% initial sales charge. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Fund performance to date was affected by investments in initial public offerings (IPOs), non-U.S. stocks, and small- and mid-cap stocks. IPOs and smaller stocks may have less impact on the fund's performance as its assets grow. Performance over a longer period of time is more meaningful than short-term performance. Unless otherwise indicated, performance reflects A Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 25 PORTFOLIO COMMENTARY Fundamental Equity In June 2008, Gregory J. Woodhams, E.A. Prescott LeGard, Justin M. Brown and Joe Reiland were named portfolio managers on the fund following the departure of Jerry Sullivan and Rob Brookby. PERFORMANCE SUMMARY Fundamental Equity returned -8.91%* for the six months ended April 30, 2008. Its benchmark, the S&P 500 Index, returned -9.64% for the same time frame. As discussed in the Market Perspective on page 2, equity markets generally declined during the reporting period, as the subprime-mortgage-driven credit crisis spread to other areas of the economy, and rising energy and commodity prices increased inflation concerns. In this environment, both growth and value stocks lost ground across the capitalization spectrum. Although Fundamental Equity delivered negative absolute results for the reporting period, it outperformed its benchmark. Effective security selection accounted for the bulk of relative strength. In particular, individual holdings within the consumer discretionary and financials sectors contributed to relative performance. An underweight allocation to financials further aided relative performance. Holdings in the industrials sector, as well as an overweight allocation to the sector, weighed on absolute and relative returns. The portfolio also derived gains from initial public offerings during the reporting period. Although several of these positions detracted slightly from portfolio gains, the group significantly contributed to relative performance. INDUSTRIALS LAGGED Electronic components-maker Belden hindered absolute and relative performance as its share price lost 42%. The company's first-quarter earnings profit fell 40% and missed analysts' estimates as healthy foreign business failed to compensate for weak sales in North America. Elsewhere in the industrials sector, the portfolio maintained an overweight stake in the aerospace and defense industry. Although these holdings collectively detracted from absolute returns, they aided Fundamental Equity's performance relative to the benchmark. TECHNOLOGY DETRACTED A stake in Avnet -- a substantial contributor to relative gains in the previous reporting period -- dragged down returns. The distributor of electronic components, which is not a benchmark constituent, weighed on relative performance as its share price slumped 37%. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Chevron Corp. 3.1% 2.7% Exxon Mobil Corp. 3.1% 1.9% General Electric Co. 2.8% 3.5% JPMorgan Chase & Co. 2.3% 1.1% Bank of America Corp. 2.0% 2.6% AT&T Inc. 2.0% 2.2% Honeywell International Inc. 1.9% 1.9% International Business Machines Corp. 1.8% 2.0% Procter & Gamble Co. (The) 1.8% 0.8% Wal-Mart Stores, Inc. 1.8% 0.8% * All fund returns referenced in this commentary are for A Class shares and are not reduced by sales charges. A Class shares are subject to a maximum sales charge of 5.75%. Had the sales charge been applied, returns would be lower than those shown. Total returns for periods less than one year are not annualized. - ------ 26 Fundamental Equity CONSUMER DISCRETIONARY PICKS LED GAINS Within the consumer discretionary sector, Fundamental Equity benefited from security selection within the hotels, restaurants, and leisure group and the specialty retail group. In particular, restaurant giant Darden Restaurants contributed to relative strength. The owner of casual restaurants -- including Red Lobster and Olive Garden -- saw its share price rise as it announced earnings that exceeded analysts' estimates. FINANCIALS, ENERGY AIDED RELATIVE STRENGTH Although the portfolio's holdings in the financials sector declined, stock selection and an underweight stake helped Fundamental Equity to outperform its benchmark within the sector. The most significant relative advantage came from avoiding the thrifts and mortgage finance industry altogether, a group whose constituents declined an average 47% within the benchmark for the reporting period. But that advantage was partially offset by an overweight stake in Wachovia Corporation, whose share price tumbled 34%. Stock selection within the energy sector also accounted for a portion of Fundamental Equity's relative strength. Within the energy sector, the portfolio derived its relative gains from the oil, gas and consumable fuels industry. Here, a stake in SandRidge Energy, a newly-issued security during the reporting period, aided performance as the natural gas exploration company's share price climbed 73% following its initial public offering in November 2007. An overweight position in Chevron also contributed to relative strength as the diversified oil company continued to benefit from rising oil prices during the period. OUTLOOK Fundamental Equity seeks large, established companies that we believe are attractively valued relative to their prospects for earnings growth and income production. Our focus on bellwether large-cap stocks should put the portfolio in position for solid returns for the foreseeable future despite short-term market volatility. We will also continue to look for investment opportunities outside the large-company arena. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Oil, Gas & Consumable Fuels 9.9% 8.2% Aerospace & Defense 6.0% 6.2% Pharmaceuticals 5.6% 2.9% Diversified Financial Services 4.9% 5.8% Capital Markets 4.6% 3.0% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 92.6% 91.1% Foreign Common Stocks(1) 5.5% 7.0% TOTAL COMMON STOCKS 98.1% 98.1% Temporary Cash Investments 2.8% 1.8% Other Assets and Liabilities(2) (0.9)% 0.1% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. (2) Includes securities lending collateral and other assets and liabilities. - ------ 27 SCHEDULE OF INVESTMENTS Fundamental Equity APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 98.1% AEROSPACE & DEFENSE -- 6.0% 37,500 General Dynamics Corp. $ 3,390,751 142,500 Honeywell International Inc. 8,464,500 58,500 Lockheed Martin Corp. 6,203,340 58,000 Raytheon Co. 3,710,260 65,000 United Technologies Corp. 4,710,550 ------------ 26,479,401 ------------ AIR FREIGHT & LOGISTICS -- 0.7% 40,500 United Parcel Service, Inc. Cl B 2,932,605 ------------ AUTO COMPONENTS -- 1.1% 100,000 Johnson Controls, Inc. 3,526,000 56,662 Tenneco Inc.(1) 1,449,414 ------------ 4,975,414 ------------ BEVERAGES -- 2.2% 44,000 Anheuser-Busch Companies, Inc. 2,164,800 61,000 Coca-Cola Enterprises Inc. 1,372,500 92,000 PepsiCo, Inc. 6,304,760 ------------ 9,842,060 ------------ BIOTECHNOLOGY -- 0.8% 22,000 Biotech HOLDRs(SM) Trust(2) 3,575,000 ------------ CAPITAL MARKETS -- 4.6% 73,000 Ameriprise Financial Inc. 3,466,770 24,000 Deutsche Bank AG ORD 2,884,897 23,300 Goldman Sachs Group, Inc. (The) 4,458,921 166,000 Invesco Ltd. 4,257,900 72,500 Merrill Lynch & Co., Inc. 3,612,675 100,000 NGP Capital Resources Co. 1,613,000 ------------ 20,294,163 ------------ CHEMICALS -- 2.8% 89,000 du Pont (E.I.) de Nemours & Co. 4,352,991 69,000 International Flavors & Fragrances Inc. 3,147,090 2,552 Intrepid Potash, Inc.(1) 121,194 19,700 Monsanto Co. 2,246,194 40,044 PPG Industries, Inc. 2,457,500 ------------ 12,324,969 ------------ COMMERCIAL BANKS -- 2.1% 152,000 Marshall & Ilsley Corp. 3,796,960 189,350 Wachovia Corp. 5,519,553 ------------ 9,316,513 ------------ Shares Value COMMERCIAL SERVICES & SUPPLIES -- 0.7% 91,000 Republic Services, Inc. $ 2,892,890 ------------ COMMUNICATIONS EQUIPMENT -- 2.1% 306,000 Cisco Systems Inc.(1) 7,845,840 27,000 QUALCOMM Inc. 1,166,130 ------------ 9,011,970 ------------ COMPUTERS & PERIPHERALS -- 2.2% 25,000 Apple Inc.(1) 4,348,750 117,000 Hewlett-Packard Co. 5,422,950 ------------ 9,771,700 ------------ CONSTRUCTION & ENGINEERING -- 0.2% 17,500 Shaw Group Inc. (The)(1) 864,850 ------------ CONTAINERS & PACKAGING -- 0.7% 109,500 Crown Holdings Inc.(1) 2,938,980 ------------ DIVERSIFIED -- 1.6% 75,000 iShares Russell 1000 Growth Index Fund 4,309,500 60,000 PowerShares QQQ Trust 2,832,600 ------------ 7,142,100 ------------ DIVERSIFIED FINANCIAL SERVICES -- 4.9% 239,500 Bank of America Corp. 8,990,830 157,000 Bovespa Holding SA ORD 2,385,229 209,000 JPMorgan Chase & Co. 9,958,850 ------------ 21,334,909 ------------ DIVERSIFIED TELECOMMUNICATION SERVICES -- 2.0% 230,000 AT&T Inc. 8,903,300 ------------ ELECTRIC UTILITIES -- 1.2% 184,500 Duke Energy Corp. 3,378,195 70,782 Pepco Holdings, Inc. 1,763,180 ------------ 5,141,375 ------------ ELECTRICAL EQUIPMENT -- 0.4% 58,014 Belden Inc. 1,957,392 ------------ ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.6% 108,010 Avnet, Inc.(1) 2,828,782 ------------ ENERGY EQUIPMENT & SERVICES -- 2.9% 101,500 Halliburton Co. 4,659,865 28,000 Schlumberger Ltd. 2,815,400 15,000 Transocean Inc.(1) 2,211,900 36,000 Weatherford International Ltd.(1) 2,904,120 ------------ 12,591,285 ------------ - ------ 28 Fundamental Equity Shares Value FOOD & STAPLES RETAILING -- 3.1% 135,000 CVS/Caremark Corp. $ 5,449,950 137,000 Wal-Mart Stores, Inc. 7,943,260 ------------ 13,393,210 ------------ FOOD PRODUCTS -- 3.2% 102,000 General Mills, Inc. 6,160,800 117,000 H.J. Heinz Co. 5,506,020 82,000 Kraft Foods Inc. Cl A 2,593,660 ------------ 14,260,480 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 2.7% 120,500 Baxter International Inc. 7,509,559 4,906,513 Golden Meditech Co. Ltd. ORD 1,699,858 94,839 STERIS Corp. 2,627,989 ------------ 11,837,406 ------------ HEALTH CARE PROVIDERS & SERVICES -- 2.1% 59,300 Aetna Inc. 2,585,480 40,000 Humana Inc.(1) 1,911,600 57,000 McKesson Corp. 2,970,840 59,500 UnitedHealth Group Inc. 1,941,485 ------------ 9,409,405 ------------ HOTELS, RESTAURANTS & LEISURE -- 3.0% 89,000 Carnival Corporation 3,575,130 100,000 Darden Restaurants, Inc. 3,558,000 58,000 McDonald's Corp. 3,455,640 67,500 Yum! Brands, Inc. 2,745,900 ------------ 13,334,670 ------------ HOUSEHOLD PRODUCTS -- 2.3% 29,857 Kimberly-Clark Corp. 1,910,549 119,000 Procter & Gamble Co. (The) 7,978,950 ------------ 9,889,499 ------------ INDUSTRIAL CONGLOMERATES -- 3.4% 32,396 3M Co. 2,491,252 374,000 General Electric Co. 12,229,800 ------------ 14,721,052 ------------ INSURANCE -- 4.0% 81,500 Ace, Ltd. 4,913,635 163,000 American International Group, Inc. 7,530,600 500 Berkshire Hathaway Inc. Cl B(1) 2,228,500 119,000 Unum Group 2,761,990 ------------ 17,434,725 ------------ INTERNET SOFTWARE & SERVICES -- 1.0% 7,500 Google Inc. Cl A(1) 4,307,175 ------------ Shares Value IT SERVICES -- 2.9% 55,500 Accenture Ltd. Cl A $ 2,084,025 67,000 International Business Machines Corp. 8,086,900 115,000 Western Union Co. (The) 2,645,000 ------------ 12,815,925 ------------ LIFE SCIENCES TOOLS & SERVICES -- 1.1% 87,000 Thermo Fisher Scientific Inc.(1) 5,034,690 ------------ MACHINERY -- 1.6% 58,000 Eaton Corp. 5,094,720 24,000 Parker-Hannifin Corp. 1,916,400 ------------ 7,011,120 ------------ MEDIA -- 1.7% 75,000 Omnicom Group Inc. 3,580,500 124,000 Walt Disney Co. (The) 4,021,320 ------------ 7,601,820 ------------ METALS & MINING -- 0.7% 39,500 Nucor Corp. 2,982,250 ------------ MULTI-UTILITIES -- 1.5% 115,922 Sempra Energy 6,569,300 ------------ MULTILINE RETAIL -- 0.8% 70,000 Target Corp. 3,719,100 ------------ OIL, GAS & CONSUMABLE FUELS -- 9.9% 142,000 Chevron Corp. 13,653,299 40,500 Devon Energy Corp. 4,592,700 144,500 Exxon Mobil Corp. 13,448,615 91,000 Marathon Oil Corp. 4,146,870 66,500 Occidental Petroleum Corp. 5,533,465 44,000 SandRidge Energy, Inc.(1) 1,987,920 ------------ 43,362,869 ------------ PHARMACEUTICALS -- 5.6% 138,000 Abbott Laboratories 7,279,500 53,000 Eli Lilly & Co. 2,551,420 112,000 Johnson & Johnson 7,514,080 125,000 Noven Pharmaceuticals Inc.(1) 1,137,500 137,000 Pfizer Inc. 2,755,070 75,000 Wyeth 3,335,250 ------------ 24,572,820 ------------ SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 2.0% 462,000 Atmel Corp.(1) 1,718,640 222,000 Intel Corp. 4,941,720 50,000 NVIDIA Corp.(1) 1,027,500 30,000 Texas Instruments Inc. 874,800 ------------ 8,562,660 ------------ - ------ 29 Fundamental Equity Shares Value SOFTWARE -- 3.0% 201,351 Microsoft Corp. $ 5,742,531 355,000 Oracle Corp.(1) 7,401,750 ------------ 13,144,281 ------------ SPECIALTY RETAIL -- 0.6% 63,000 Best Buy Co., Inc. 2,710,260 ------------ TEXTILES, APPAREL & LUXURY GOODS -- 0.5% 29,500 NIKE, Inc. Cl B 1,970,600 ------------ TOBACCO -- 1.6% 99,000 Altria Group Inc. 1,980,000 95,000 Philip Morris International Inc.(1) 4,847,850 ------------ 6,827,850 ------------ TOTAL COMMON STOCKS (Cost $427,878,662) 430,592,825 ------------ Temporary Cash Investments -- 2.8% Repurchase Agreement, Bank of America Securities, LLC, (collateralized by various U.S. Treasury obligations, 0.625%, 4/15/13, valued at $12,553,664), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $12,300,656) (Cost $12,300,000) 12,300,000 ------------ Temporary Cash Investments - Securities Lending Collateral(3) -- 0.8% Repurchase Agreement, Barclays Capital Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.98%, dated 4/30/08, due 5/1/08 (Delivery value $774,418) 774,375 Shares Value Repurchase Agreement, BNP Paribas Securities Corp., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.99%, dated 4/30/08, due 5/1/08 (Delivery value $700,039) $700,000 Repurchase Agreement, Deutsche Bank Securities Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $700,038) 700,000 Repurchase Agreement, Lehman Brothers Inc. / Lehman Brothers Commercial Paper Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 2.39%, dated 4/30/08, due 5/1/08 (Delivery value $700,046) 700,000 Repurchase Agreement, Morgan Stanley & Co. Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $700,038) 700,000 ------------ TOTAL TEMPORARY CASH INVESTMENTS -- SECURITIES LENDING COLLATERAL (Cost $3,574,375) 3,574,375 ------------ TOTAL INVESTMENT SECURITIES -- 101.7% (Cost $443,753,037) 446,467,200 ------------ OTHER ASSETS AND LIABILITIES -- (1.7)% (7,407,443) ------------ TOTAL NET ASSETS -- 100.0% $439,059,757 ============ Forward Foreign Currency Exchange Contracts Contracts to Sell Settlement Date Value Unrealized Gain (Loss) 921,240 Euro for USD 5/30/08 $1,437,007 $2,627 ========== ========== (Value on Settlement Date $1,439,634) Notes to Schedule of Investments HOLDRs = Holding Company Depositary Receipts ORD = Foreign Ordinary Share USD = United States Dollar (1) Non-income producing. (2) Security, or a portion thereof, was on loan as of April 30, 2008. (3) Investments represent purchases made by the lending agent with cash collateral received through securities lending transactions. See Notes to Financial Statements. - ------ 30 SHAREHOLDER FEE EXAMPLES (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 31 Beginning Ending Expenses Paid Account Account During Period* Value Value 11/1/07 - Annualized 11/1/07 4/30/08 4/30/08 Expense Ratio* Select ACTUAL Investor Class $1,000 $905.90 $4.74 1.00% Institutional Class $1,000 $906.80 $3.79 0.80% A Class $1,000 $904.50 $5.92 1.25% B Class $1,000 $901.20 $9.45 2.00% C Class $1,000 $901.30 $9.45 2.00% R Class $1,000 $903.50 $7.10 1.50% HYPOTHETICAL Investor Class $1,000 $1,019.89 $5.02 1.00% Institutional Class $1,000 $1,020.89 $4.02 0.80% A Class $1,000 $1,018.65 $6.27 1.25% B Class $1,000 $1,014.92 $10.02 2.00% C Class $1,000 $1,014.92 $10.02 2.00% R Class $1,000 $1,017.40 $7.52 1.50% Capital Growth ACTUAL Investor Class $1,000 $938.50 $4.87 1.01% Institutional Class $1,000 $938.80 $3.90 0.81% A Class $1,000 $937.40 $6.07 1.26% B Class $1,000 $934.00 $9.67 2.01% C Class $1,000 $934.00 $9.67 2.01% R Class $1,000 $936.20 $7.27 1.51% HYPOTHETICAL Investor Class $1,000 $1,019.84 $5.07 1.01% Institutional Class $1,000 $1,020.84 $4.07 0.81% A Class $1,000 $1,018.60 $6.32 1.26% B Class $1,000 $1,014.87 $10.07 2.01% C Class $1,000 $1,014.87 $10.07 2.01% R Class $1,000 $1,017.35 $7.57 1.51% * Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 32 Beginning Ending Expenses Paid Account Account During Period* Value Value 11/1/07 - Annualized 11/1/07 4/30/08 4/30/08 Expense Ratio* Focused Growth ACTUAL Investor Class $1,000 $960.60 $4.87 1.00% Institutional Class $1,000 $961.10 $3.90 0.80% A Class $1,000 $958.90 $6.09 1.25% B Class $1,000 $955.20 $9.72 2.00% C Class $1,000 $955.20 $9.72 2.00% R Class $1,000 $958.00 $7.30 1.50% HYPOTHETICAL Investor Class $1,000 $1,019.89 $5.02 1.00% Institutional Class $1,000 $1,020.89 $4.02 0.80% A Class $1,000 $1,018.65 $6.27 1.25% B Class $1,000 $1,014.92 $10.02 2.00% C Class $1,000 $1,014.92 $10.02 2.00% R Class $1,000 $1,017.40 $7.52 1.50% Fundamental Equity ACTUAL Investor Class $1,000 $912.10 $4.80 1.01% Institutional Class $1,000 $912.70 $3.85 0.81% A Class $1,000 $910.90 $5.99 1.26% B Class $1,000 $907.40 $9.53 2.01% C Class $1,000 $906.80 $9.53 2.01% R Class $1,000 $909.00 $7.17 1.51% HYPOTHETICAL Investor Class $1,000 $1,019.84 $5.07 1.01% Institutional Class $1,000 $1,020.84 $4.07 0.81% A Class $1,000 $1,018.60 $6.32 1.26% B Class $1,000 $1,014.87 $10.07 2.01% C Class $1,000 $1,014.87 $10.07 2.01% R Class $1,000 $1,017.35 $7.57 1.51% * Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 33 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) Capital Focused Fundamental Select Growth Growth Equity ASSETS Investment securities - -- at value (cost of $2,051,461,298, $7,093,008, $12,506,897 and $440,178,662, respectively) -- including $-, $99,430, $259,942 and $3,499,770 of securities on loan, respectively $2,378,790,996 $7,822,493 $13,408,130 $442,892,825 Investments made with cash collateral received for securities on loan, at value (cost of $-, $102,495, $264,253 and $3,574,375, respectively) -- 102,495 264,253 3,574,375 -------------- ---------- ----------- ------------ Total investment securities, at value (cost of $2,051,461,298, $7,195,503, $12,771,150 and $443,753,037, respectively) 2,378,790,996 7,924,988 13,672,383 446,467,200 Cash -- 211,374 2,515 1,746,637 Receivable for investments sold 27,275,674 111,149 219,166 3,793,326 Receivable for forward foreign currency exchange contracts 139,780 135 97 2,627 Receivable for capital shares sold 150 200 -- 670,215 Dividends and interest receivable 2,166,989 3,623 5,363 319,269 -------------- ---------- ----------- ------------ 2,408,373,589 8,251,469 13,899,524 452,999,274 -------------- ---------- ----------- ------------ LIABILITIES Disbursements in excess of demand deposit cash 329,252 -- -- -- Payable for collateral received for securities on loan -- 102,495 264,253 3,574,375 Payable for investments purchased 15,095,920 155,141 342,605 9,827,085 Payable for forward foreign currency exchange contracts 48,151 -- -- -- Payable for capital shares redeemed -- -- -- 99,197 Accrued management fees 1,921,969 6,089 10,297 343,302 Distribution fees payable 3,158 1,098 61 21,756 Service fees (and distribution fees -- A Class and R Class) payable 7,709 1,116 41 73,802 -------------- ---------- ----------- ------------ 17,406,159 265,939 617,257 13,939,517 -------------- ---------- ----------- ------------ NET ASSETS $2,390,967,430 $7,985,530 $13,282,267 $439,059,757 =============== ========== =========== ============ See Notes to Financial Statements. - ------ 34 APRIL 30, 2008 (UNAUDITED) Capital Focused Fundamental Select Growth Growth Equity NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $1,999,816,806 $7,406,418 $12,260,618 $444,694,922 Accumulated undistributed net investment income (loss) 1,062,173 (6,049) 3,339 340,719 Accumulated undistributed net realized gain (loss) on investment and foreign currency transactions 62,682,951 (144,495) 116,980 (8,691,436) Net unrealized appreciation on investments and translation of assets and liabilities in foreign currencies 327,405,500 729,656 901,330 2,715,552 -------------- ---------- ----------- ------------ $2,390,967,430 $7,985,530 $13,282,267 $439,059,757 ============== ========== =========== ============ INVESTOR CLASS, $0.01 PAR VALUE Net assets $2,210,282,240 $2,172,065 $13,063,637 $60,085,719 Shares outstanding 57,889,683 176,497 1,193,155 4,342,615 Net asset value per share $38.18 $12.31 $10.95 $13.84 INSTITUTIONAL CLASS, $0.01 PAR VALUE Net assets $143,096,611 $31,404 $24,673 $1,902,338 Shares outstanding 3,708,993 2,537 2,256 137,433 Net asset value per share $38.58 $12.38 $10.94 $13.84 A CLASS, $0.01 PAR VALUE Net assets $32,401,429 $3,734,171 $61,985 $339,862,877 Shares outstanding 860,735 305,579 5,654 24,574,388 Net asset value per share $37.64 $12.22 $10.96 $13.83 Maximum offering price (net asset value divided by 0.9425) $39.94 $12.97 $11.63 $14.67 B CLASS, $0.01 PAR VALUE Net assets $4,384,451 $997,818 $24,500 $5,656,321 Shares outstanding 119,864 84,530 2,226 412,875 Net asset value per share $36.58 $11.80 $11.01 $13.70 C CLASS, $0.01 PAR VALUE Net assets $773,800 $993,881 $82,900 $31,075,514 Shares outstanding 21,131 84,195 7,532 2,267,513 Net asset value per share $36.62 $11.80 $11.01 $13.70 R CLASS, $0.01 PAR VALUE Net assets $28,899 $56,191 $24,572 $476,988 Shares outstanding 763 4,635 2,238 34,554 Net asset value per share $37.85 $12.12 $10.98 $13.80 See Notes to Financial Statements. - ------ 35 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) Capital Focused Fundamental Select Growth Growth Equity INVESTMENT INCOME (LOSS) INCOME: Dividends (net of foreign taxes withheld of $112,511, $421, $668 and $748, respectively) $ 12,147,667 $ 35,783 $ 67,760 $ 3,604,044 Interest 593,520 1,477 4,092 86,063 Securities lending, net 60,366 1,163 509 30,378 -------------- ---------- ---------- ------------- 12,801,553 38,423 72,361 3,720,485 -------------- ---------- ---------- ------------- EXPENSES: Management fees 12,121,440 32,139 62,460 1,808,486 Distribution fees: B Class 17,568 3,258 89 19,432 C Class 3,233 2,858 268 101,500 Service fees: B Class 5,856 1,086 30 6,477 C Class 1,077 953 89 33,833 Distribution and service fees: A Class 45,495 3,928 38 343,324 R Class 72 95 60 1,147 Directors' fees and expenses 28,626 141 144 7,652 Other expenses 5,701 14 19 521 -------------- ---------- ---------- ------------- 12,229,068 44,472 63,197 2,322,372 -------------- ---------- ---------- ------------- NET INVESTMENT INCOME (LOSS) 572,485 (6,049) 9,164 1,398,113 -------------- ---------- ---------- ------------- REALIZED AND UNREALIZED GAIN (LOSS) NET REALIZED GAIN (LOSS) ON: Investment transactions 71,605,803 (112,888) 133,443 (8,502,805) Foreign currency transactions (2,505,635) (6,663) (17,118) (115,383) -------------- ---------- ---------- ------------- 69,100,168 (119,551) 116,325 (8,618,188) -------------- ---------- ---------- ------------- CHANGE IN NET UNREALIZED APPRECIATION (DEPRECIATION) ON: Investments (328,969,020) (246,596) (696,609) (22,564,564) Translation of assets and liabilities in foreign currencies 698,109 331 1,012 19,597 -------------- ---------- ---------- ------------- (328,270,911) (246,265) (695,597) (22,544,967) -------------- ---------- ---------- ------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (259,170,743) (365,816) (579,272) (31,163,155) -------------- ---------- ---------- ------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(258,598,258) $(371,865) $(570,108) $(29,765,042) ============== ========== ========== ============= See Notes to Financial Statements. - ------ 36 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Select Capital Growth Increase (Decrease) in Net Assets 2008 2007 2008 2007 OPERATIONS Net investment income (loss) $572,485 $ 2,931,467 $ (6,049) $ (19,033) Net realized gain (loss) 69,100,168 199,860,391 (119,551) 481,849 Change in net unrealized appreciation (depreciation) (328,270,911) 461,001,866 (246,265) 544,596 -------------- -------------- ---------- ---------- Net increase (decrease) in net assets resulting from operations (258,598,258) 663,793,724 (371,865) 1,007,412 -------------- -------------- ---------- ---------- DISTRIBUTIONS TO SHAREHOLDERS From net investment income: Investor Class -- (10,981,848) -- -- Institutional Class -- (951,224) -- -- A Class -- (39,351) -- -- A Class (old) (Note 9) -- (47,590) -- -- R Class -- -- -- -- From net realized gains: Investor Class (182,640,492) (39,672,127) (106,995) (1,045) Institutional Class (12,086,566) (2,344,204) (2,469) (331) A Class (3,075,006) (343,121) (239,050) (27,475) A Class (old) (Note 9) -- (414,970) -- -- B Class (404,171) (92,435) (71,895) (11,734) C Class (75,080) (19,786) (55,027) (10,342) R Class (2,305) (381) (2,746) (331) -------------- -------------- ---------- ---------- Decrease in net assets from distributions (198,283,620) (54,907,037) (478,182) (51,258) -------------- -------------- ---------- ---------- CAPITAL SHARE TRANSACTIONS Net increase (decrease) in net assets from capital share transactions 79,784,496 (622,635,475) 2,896,109 896,296 -------------- -------------- ---------- ---------- NET INCREASE (DECREASE) IN NET ASSETS (377,097,382) (13,748,788) 2,046,062 1,852,450 NET ASSETS Beginning of period 2,768,064,812 2,781,813,600 5,939,468 4,087,018 -------------- -------------- ---------- ---------- End of period $2,390,967,430 $2,768,064,812 $7,985,530 $5,939,468 ============== ============== ========== ========== Accumulated undistributed net investment income (loss) $1,062,173 $489,688 $(6,049) -- ============== ============== ========== ========== See Notes to Financial Statements. - ------ 37 SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Focused Growth Fundamental Equity Increase (Decrease) in Net Assets 2008 2007 2008 2007 OPERATIONS Net investment income (loss) $ 9,164 $ 45,727 $ 1,398,113 $ 1,103,561 Net realized gain (loss) 116,325 1,532,515 (8,618,188) 8,179,496 Change in net unrealized appreciation (depreciation) (695,597) 418,442 (22,544,967) 22,198,609 ----------- ----------- ------------ ------------ Net increase (decrease) in net assets resulting from operations (570,108) 1,996,684 (29,765,042) 31,481,666 ----------- ----------- ------------ ------------ DISTRIBUTIONS TO SHAREHOLDERS From net investment income: Investor Class (7,155) (54,114) (460,415) (24,444) Institutional Class (63) -- (2,800) (256) A Class -- -- (1,508,022) (137,443) R Class -- -- (1,563) (4) From net realized gains: Investor Class (1,516,407) (299,286) (1,329,674) (59,454) Institutional Class (2,904) -- (6,528) (447) A Class (2,856) -- (6,205,227) (657,564) B Class (2,673) -- (119,040) (25,167) C Class (7,928) -- (598,169) (83,263) R Class (2,795) -- (11,182) (489) ----------- ----------- ------------ ------------ Decrease in net assets from distributions (1,542,781) (353,400) (10,242,620) (988,531) ----------- ----------- ------------ ------------ CAPITAL SHARE TRANSACTIONS Net increase (decrease) in net assets from capital share transactions 1,835,713 (3,920,671) 148,679,336 252,655,161 ----------- ----------- ------------ ------------ NET INCREASE (DECREASE) IN NET ASSETS (277,176) (2,277,387) 108,671,674 283,148,296 NET ASSETS Beginning of period 13,559,443 15,836,830 330,388,083 47,239,787 ----------- ----------- ------------ ------------ End of period $13,282,267 $13,559,443 $439,059,757 $330,388,083 =========== =========== ============ ============ Undistributed net investment income $3,339 $1,393 $340,719 $915,406 =========== =========== ============ ============ See Notes to Financial Statements. - ------ 38 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. Select Fund (Select), Capital Growth Fund (Capital Growth), Focused Growth Fund (Focused Growth) and Fundamental Equity Fund (Fundamental Equity) (collectively, the funds) are four funds in a series issued by the corporation. The funds are diversified under the 1940 Act. Prior to March 1, 2008, Focused Growth was nondiversified. The funds' investment objective is to seek long-term capital growth. Income is a secondary objective of Fundamental Equity. Select, Capital Growth and Focused Growth pursue this objective by purchasing stocks of larger-sized companies that management believes will increase in value over time. Fundamental Equity looks for common stocks that management believes are attractively priced relative to the companies' earnings growth potential and dividend yields. The following is a summary of the funds' significant accounting policies. MULTIPLE CLASS -- The funds are authorized to issue the Investor Class, the Institutional Class, the A Class, the B Class, the C Class and the R Class. The A Class may incur an initial sales charge. The A Class, B Class and C Class may be subject to a contingent deferred sales charge. The share classes differ principally in their respective sales charges and distribution and shareholder servicing expenses and arrangements. All shares of each fund represent an equal pro rata interest in the net assets of the class to which such shares belong, and have identical voting, dividend, liquidation and other rights and the same terms and conditions, except for class specific expenses and exclusive rights to vote on matters affecting only individual classes. Income, non-class specific expenses, and realized and unrealized capital gains and losses of the funds are allocated to each class of shares based on their relative net assets. Sale of Focused Growth's Institutional Class, A Class, B Class, C Class and R Class commenced on September 28, 2007. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Discount notes may be valued through a commercial pricing service or at amortized cost, which approximates fair value. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the funds determine that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the funds to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. SECURITIES ON LOAN -- The funds may lend portfolio securities through their lending agent to certain approved borrowers in order to earn additional income. The income earned, net of any rebates or fees, is included in the Statement of Operations. The funds continue to recognize any gain or loss in the market price of the securities loaned and record any interest earned or dividends declared. EXCHANGE TRADED FUNDS -- The funds may invest in exchange traded funds (ETFs). ETFs are a type of index fund bought and sold on a securities exchange. An ETF trades like common stock and represents a fixed portfolio of securities designed to track the performance and dividend yield of a particular - ------ 39 domestic or foreign market index. A fund may purchase an ETF to temporarily gain exposure to a portion of the U.S. or a foreign market while awaiting purchase of underlying securities. The risks of owning an ETF generally reflect the risks of owning the underlying securities they are designed to track, although the lack of liquidity on an ETF could result in it being more volatile. Additionally, ETFs have management fees, which increase their cost. FOREIGN CURRENCY TRANSACTIONS -- All assets and liabilities initially expressed in foreign currencies are translated into U.S. dollars at prevailing exchange rates at period end. Purchases and sales of investment securities, dividend and interest income, and certain expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. For assets and liabilities, other than investments in securities, net realized and unrealized gains and losses from foreign currency translations arise from changes in currency exchange rates. Net realized and unrealized foreign currency exchange gains or losses occurring during the holding period of investment securities are a component of realized gain (loss) on investment transactions and unrealized appreciation (depreciation) on investments, respectively. Certain countries may impose taxes on the contract amount of purchases and sales of foreign currency contracts in their currency. The funds record the foreign tax expense, if any, as a reduction to the net realized gain (loss) on foreign currency transactions. FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS -- The funds may enter into forward foreign currency exchange contracts to facilitate transactions of securities denominated in a foreign currency or to hedge the funds' exposure to foreign currency exchange rate fluctuations. The net U.S. dollar value of foreign currency underlying all contractual commitments held by the funds and the resulting unrealized appreciation or depreciation are determined daily using prevailing exchange rates. The funds bear the risk of an unfavorable change in the foreign currency exchange rate underlying the forward contract. Additionally, losses may arise if the counterparties do not perform under the contract terms. REPURCHASE AGREEMENTS -- The funds may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. Each fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable each fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to each fund under each repurchase agreement. JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, each fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. INCOME TAX STATUS -- It is each fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The funds are no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the funds. In addition, in the normal course of business, the funds enter into contracts that provide general indemnifications. The funds' maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the funds. The risk of material loss from such claims is considered by management to be remote. - ------ 40 USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. 2. FEES AND TRANSACTIONS WITH RELATED PARTIES MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the funds with investment advisory and management services in exchange for a single, unified management fee (the fee) per class. The Agreement provides that all expenses of the funds, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of each specific class of shares of each fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula takes into account all of the investment advisor's assets under management in each fund's investment strategy (strategy assets) to calculate the appropriate fee rate for each fund. The strategy assets include each fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule for the funds ranges from 0.800% to 1.000% for the Investor Class, A Class, B Class, C Class and R Class. The Institutional Class is 0.200% less at each point within the range. The effective annual management fee for each class of the funds for the six months ended April 30, 2008, was 1.00% for the Investor Class, A Class, B Class, C Class and R Class and 0.80% for the Institutional Class. DISTRIBUTION AND SERVICE FEES -- The Board of Directors has adopted a separate Master Distribution and Individual Shareholder Services Plan for each of the A Class, B Class, C Class and R Class (collectively the plans), pursuant to Rule 12b-1 of the 1940 Act. The plans provide that the A Class will pay American Century Investment Services, Inc. (ACIS) an annual distribution and service fee of 0.25%. The plans provide that the B Class and C Class will each pay ACIS an annual distribution fee of 0.75% and service fee of 0.25%. The plans provide that the R Class will pay ACIS an annual distribution and service fee of 0.50%. The fees are computed and accrued daily based on each class's daily net assets and paid monthly in arrears. The distribution fee provides compensation for expenses incurred in connection with distributing shares of the classes including, but not limited to, payments to brokers, dealers, and financial institutions that have entered into sales agreements with respect to shares of the funds. The service fee provides compensation for individual shareholder services rendered by broker/dealers or other independent financial intermediaries. Fees incurred under the plans during the six months ended April 30, 2008, are detailed in the Statement of Operations. RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, ACIS, and the corporation's transfer agent, American Century Services, LLC. The funds are eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. The funds have a securities lending agreement with JPMorgan Chase Bank (JPMCB). Prior to December 12, 2007, the funds had a bank line of credit agreement with JPMCB. JPMCB is a custodian of the funds and a wholly owned subsidiary of JPM. 3. INVESTMENT TRANSACTIONS Investment transactions, excluding short-term investments, for the six months ended April 30, 2008, were as follows: Capital Focused Fundamental Select Growth Growth Equity Purchases $801,695,413 $6,847,508 $9,348,579 $230,102,091 Proceeds from sales $998,941,570 $4,576,272 $9,074,215 $92,091,399 - ------ 41 4. CAPITAL SHARE TRANSACTIONS Transactions in shares of the funds were as follows: Six months ended Year ended April 30, 2008 October 31, 2007 Shares Amount Shares Amount Select INVESTOR CLASS/SHARES AUTHORIZED 300,000,000 300,000,000 =========== =========== Sold 814,312 $ 32,030,902 1,250,472 $ 48,790,315 Issued in reinvestment of distributions 4,320,701 174,988,384 1,304,522 48,241,214 Redeemed (3,191,032) (126,022,388) (17,717,923) (685,347,731) ----------- ------------ ------------ -------------- 1,943,981 80,996,898 (15,162,929) (588,316,202) ----------- ------------ ------------ -------------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 40,000,000 40,000,000 =========== =========== Sold 30,105 1,167,747 353,624 13,609,415 Issued in reinvestment of distributions 295,584 12,086,426 88,501 3,294,898 Redeemed (279,795) (11,046,309) (849,574) (32,045,945) ----------- ------------ ------------ -------------- 45,894 2,207,864 (407,449) (15,141,632) ----------- ------------ ------------ -------------- A CLASS/SHARES AUTHORIZED 75,000,000 75,000,000 =========== =========== Sold 71,278 2,784,094 148,523 5,577,259 Issued in connection with reclassification (Note 9) -- -- 506,351 20,436,277 Issued in reinvestment of distributions 75,309 3,009,333 9,421 344,992 Redeemed (235,328) (8,919,767) (314,140) (12,073,334) ----------- ------------ ------------ -------------- (88,741) (3,126,340) 350,155 14,285,194 ----------- ------------ ------------ -------------- A CLASS (OLD)/SHARES AUTHORIZED N/A N/A =========== =========== Sold 37,196 1,415,182 Issued in reinvestment of distributions 12,149 447,803 Redeemed in connection with reclassification (Note 9) (506,351) (20,436,277) Redeemed (330,339) (12,574,066) ----------- ------------ ------------ -------------- (787,345) (31,147,358) ----------- ------------ ------------ -------------- B CLASS/SHARES AUTHORIZED 25,000,000 25,000,000 =========== =========== Sold 2,132 79,142 7,203 268,506 Issued in reinvestment of distributions 9,553 372,090 2,401 86,511 Redeemed (18,236) (696,525) (50,198) (1,890,695) ----------- ------------ ------------ -------------- (6,551) (245,293) (40,594) (1,535,678) ----------- ------------ ------------ -------------- C CLASS/SHARES AUTHORIZED 25,000,000 25,000,000 =========== =========== Sold 438 17,020 714 26,450 Issued in reinvestment of distributions 1,459 56,859 426 15,353 Redeemed (3,490) (125,171) (22,109) (823,182) ----------- ------------ ------------ -------------- (1,593) (51,292) (20,969) (781,379) ----------- ------------ ------------ -------------- R CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 =========== =========== Sold 9 354 54 2,087 Issued in reinvestment of distributions 57 2,305 10 381 Redeemed -- -- (23) (888) ----------- ------------ ------------ -------------- 66 2,659 41 1,580 ----------- ------------ ------------ -------------- Net increase (decrease) 1,893,056 $ 79,784,496 (16,069,090) $(622,635,475) =========== ============ ============ ============== - ------ 42 Six months ended Year ended April 30, 2008 October 31, 2007 Shares Amount Shares Amount Capital Growth INVESTOR CLASS/SHARES AUTHORIZED 300,000,000 300,000,000 =========== =========== Sold 101,766 $1,295,699 78,738 $ 1,095,962 Issued in reinvestment of distributions 8,465 106,995 88 1,045 Redeemed (13,853) (177,164) (5,954) (79,017) ----------- ---------- ----------- ---------- 96,378 1,225,530 72,872 1,017,990 ----------- ---------- ----------- ---------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 =========== =========== Issued in reinvestment of distributions 195 2,469 27 331 ----------- ---------- ----------- ---------- A CLASS/SHARES AUTHORIZED 100,000,000 100,000,000 =========== =========== Sold 91,559 1,099,254 123,502 1,513,050 Issued in reinvestment of distributions 16,251 204,109 2,022 23,962 Redeemed (26,652) (324,711) (84,101) (1,089,133) ----------- ---------- ----------- ---------- 81,158 978,652 41,423 447,879 ----------- ---------- ----------- ---------- B CLASS/SHARES AUTHORIZED 100,000,000 100,000,000 =========== =========== Sold 24,143 286,282 27,689 332,104 Issued in reinvestment of distributions 5,124 62,361 990 11,480 Redeemed (7,699) (88,433) (48,876) (626,062) ----------- ---------- ----------- ---------- 21,568 260,210 (20,197) (282,478) ----------- ---------- ----------- ---------- C CLASS/SHARES AUTHORIZED 100,000,000 100,000,000 =========== =========== Sold 45,267 540,401 20,884 259,074 Issued in reinvestment of distributions 2,288 27,845 809 9,388 Redeemed (13,969) (164,340) (43,150) (558,908) ----------- ---------- ----------- ---------- 33,586 403,906 (21,457) (290,446) ----------- ---------- ----------- ---------- R CLASS/SHARES AUTHORIZED 60,000,000 60,000,000 =========== =========== Sold 1,961 23,562 195 2,713 Issued in reinvestment of distributions 220 2,746 28 331 Redeemed (83) (966) (2) (24) ----------- ---------- ----------- ---------- 2,098 25,342 221 3,020 ----------- ---------- ----------- ---------- Net increase (decrease) 234,983 $2,896,109 72,889 $ 896,296 =========== ========== =========== ========== - ------ 43 Six months ended Year ended April 30, 2008 October 31, 2007(1) Shares Amount Shares Amount Focused Growth INVESTOR CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 ========== ========== Sold 181,666 $ 2,014,610 252,879 $ 2,955,714 Issued in reinvestment of distributions 136,093 1,498,382 29,862 339,826 Redeemed (159,887) (1,743,164) (633,768) (7,391,198) ---------- ----------- ---------- ------------ 157,872 1,769,828 (351,027) (4,095,658) ---------- ----------- ---------- ------------ INSTITUTIONAL CLASS/SHARES AUTHORIZED 10,000,000 10,000,000 ========== ========== Sold -- -- 1,986 25,000 Issued in reinvestment of distributions 270 2,967 -- -- ---------- ----------- ---------- ------------ 270 2,967 1,986 25,000 ---------- ----------- ---------- ------------ A CLASS/SHARES AUTHORIZED 10,000,000 10,000,000 ========== ========== Sold 3,409 36,663 1,986 25,000 Issued in reinvestment of distributions 259 2,856 -- -- ---------- ----------- ---------- ------------ 3,668 39,519 1,986 25,000 ---------- ----------- ---------- ------------ B CLASS/SHARES AUTHORIZED 10,000,000 10,000,000 ========== ========== Sold -- -- 1,986 25,000 Issued in reinvestment of distributions 240 2,673 -- -- ---------- ----------- ---------- ------------ 240 2,673 1,986 25,000 ---------- ----------- ---------- ------------ C CLASS/SHARES AUTHORIZED 10,000,000 10,000,000 ========== ========== Sold 926 10,003 5,892 74,987 Issued in reinvestment of distributions 714 7,928 -- -- ---------- ----------- ---------- ------------ 1,640 17,931 5,892 74,987 ---------- ----------- ---------- ------------ R CLASS/SHARES AUTHORIZED 10,000,000 10,000,000 ========== ========== Sold -- -- 1,986 25,000 Issued in reinvestment of distributions 252 2,795 -- -- ---------- ----------- ---------- ------------ 252 2,795 1,986 25,000 ---------- ----------- ---------- ------------ Net increase (decrease) 163,942 $ 1,835,713 (337,191) $(3,920,671) ========== =========== ========== ============ (1) September 28, 2007 (commencement of sale) through October 31, 2007 for the Institutional Class, A Class, B Class, C Class and R Class. - ------ 44 Six months ended Year ended April 30, 2008 October 31, 2007 Shares Amount Shares Amount Fundamental Equity INVESTOR CLASS/SHARES AUTHORIZED 200,000,000 200,000,000 =========== =========== Sold 1,711,660 $ 23,822,312 3,715,748 $ 53,813,021 Issued in reinvestment of distributions 110,977 1,604,732 5,867 77,738 Redeemed (917,956) (12,539,990) (581,646) (8,716,197) ----------- ------------ ----------- ------------ 904,681 12,887,054 3,139,969 45,174,562 ----------- ------------ ----------- ------------ INSTITUTIONAL CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 =========== =========== Sold 119,132 1,616,621 15,790 209,743 Issued in reinvestment of distributions 86 1,242 53 703 ----------- ------------ ----------- ------------ 119,218 1,617,863 15,843 210,446 ----------- ------------ ----------- ------------ A CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 =========== =========== Sold 10,498,557 145,761,716 13,689,196 198,932,845 Issued in reinvestment of distributions 519,284 7,514,042 58,553 776,411 Redeemed (2,179,439) (30,126,558) (915,776) (13,379,165) ----------- ------------ ----------- ------------ 8,838,402 123,149,200 12,831,973 186,330,091 ----------- ------------ ----------- ------------ B CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 =========== =========== Sold 119,822 1,685,955 224,752 3,219,435 Issued in reinvestment of distributions 6,509 93,530 1,357 17,871 Redeemed (29,891) (403,918) (27,247) (393,576) ----------- ------------ ----------- ------------ 96,440 1,375,567 198,862 2,843,730 ----------- ------------ ----------- ------------ C CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 =========== =========== Sold 833,897 11,615,733 1,308,090 18,834,090 Issued in reinvestment of distributions 21,262 305,742 3,892 51,300 Redeemed (175,690) (2,367,264) (79,354) (1,139,749) ----------- ------------ ----------- ------------ 679,469 9,554,211 1,232,628 17,745,641 ----------- ------------ ----------- ------------ R CLASS/SHARES AUTHORIZED 60,000,000 60,000,000 =========== =========== Sold 10,066 141,454 33,938 472,163 Issued in reinvestment of distributions 882 12,745 37 493 Redeemed (4,475) (58,758) (8,262) (121,965) ----------- ------------ ----------- ------------ 6,473 95,441 25,713 350,691 ----------- ------------ ----------- ------------ Net increase (decrease) 10,644,683 $148,679,336 17,444,988 $252,655,161 =========== ============ =========== ============ - ------ 45 5. SECURITIES LENDING As of April 30, 2008, securities in Capital Growth, Focused Growth and Fundamental Equity valued at $99,430, $259,942 and $3,499,770, respectively, were on loan through the lending agent, JPMCB, to certain approved borrowers. As of April 30, 2008, Select did not have any securities on loan. JPMCB receives and maintains collateral in the form of cash and/or acceptable securities as approved by ACIM. Cash collateral is invested in authorized investments by the lending agent in a pooled account. The value of cash collateral received at period end is disclosed in the Statement of Assets and Liabilities and investments made with the cash by the lending agent are listed in the Schedule of Investments. Any deficiencies or excess of collateral must be delivered or transferred by the member firms no later than the close of business on the next business day. The total market value of all collateral received for Capital Growth, Focused Growth and Fundamental Equity, at this date, was $102,495, $264,253 and $3,574,375, respectively. The funds' risks in securities lending are that the borrower may not provide additional collateral when required or return the securities when due. If the borrower defaults, receipt of the collateral by the funds may be delayed or limited. 6. BANK LINE OF CREDIT Effective December 12, 2007, the funds, along with certain other funds managed by ACIM or ACGIM, have a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the funds, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The funds may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The funds did not borrow from the line during the six months ended April 30, 2008. 7. RISK FACTORS There are certain risks involved in investing in foreign securities. These risks include those resulting from future adverse political, social, and economic developments, fluctuations in currency exchange rates, the possible imposition of exchange controls, and other foreign laws or restrictions. Focused Growth's investment process may result in high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. Fundamental Equity's performance may be affected by investments in initial public offerings (IPOs). The impact of IPO's on a fund's performance depends on the strength of the IPO market and the size of the fund. IPOs may have less impact on a fund's performance as its assets grow. 8. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: Capital Focused Fundamental Select Growth Growth Equity Federal tax cost of investments $2,056,901,794 $7,294,425 $12,834,649 $444,988,787 ============== =========== =========== ============ Gross tax appreciation of investments $367,841,283 $ 847,090 $1,083,171 $ 26,622,847 Gross tax depreciation of investments (45,952,081) (216,527) (245,437) (25,144,434) -------------- ----------- ----------- ------------ Net tax appreciation (depreciation) of investments $321,889,202 $ 630,563 $ 837,734 $ 1,478,413 ============== =========== =========== ============ The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. - ------ 46 9. CORPORATE EVENT On July 27, 2007, the A Class (old) shareholders of Select approved a reclassification of A Class (old) shares into Advisor Class shares. The change was approved by the Board of Directors on November 29, 2006 and March 7, 2007. The reclassification was effective on September 4, 2007. Subsequent to the reclassification, the Advisor Class was renamed A Class. 10. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 47 FINANCIAL HIGHLIGHTS Select Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $45.58 $36.22 $37.04 $34.80 $33.77 $28.91 ------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) 0.01 0.04 0.21 0.15 --(3) 0.01 Net Realized and Unrealized Gain (Loss) (4.11) 10.06 (0.77) 2.17 1.03 4.92 ------- ------- ------- ------- ------- ------- Total From Investment Operations (4.10) 10.10 (0.56) 2.32 1.03 4.93 ------- ------- ------- ------- ------- ------- Distributions From Net Investment Income -- (0.16) (0.26) (0.08) -- (0.07) From Net Realized Gains (3.30) (0.58) -- -- -- -- ------- ------- ------- ------- ------- ------- Total Distributions (3.30) (0.74) (0.26) (0.08) -- (0.07) ------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $38.18 $45.58 $36.22 $37.04 $34.80 $33.77 ======= ======= ======= ======= ======= ======= TOTAL RETURN(4) (9.41)% 28.37% (1.55)% 6.67% 3.05% 17.11% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.00%(5) 1.00% 1.00% 1.00% 1.00% 1.00% Ratio of Net Investment Income (Loss) to Average Net Assets 0.04%(5) 0.11% 0.57% 0.42% (0.01)% 0.03% Portfolio Turnover Rate 33% 79% 206% 55% 48% 84% Net Assets, End of Period (in millions) $2,210 $2,550 $2,576 $3,329 $3,565 $3,828 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Per-share amount was less than $0.005. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 48 Select Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $45.98 $36.53 $37.35 $35.09 $33.99 $29.10 -------- -------- -------- -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(2) 0.05 0.12 0.30 0.24 0.07 0.07 Net Realized and Unrealized Gain (Loss) (4.15) 10.15 (0.78) 2.18 1.03 4.95 -------- -------- -------- -------- -------- -------- Total From Investment Operations (4.10) 10.27 (0.48) 2.42 1.10 5.02 -------- -------- -------- -------- -------- -------- Distributions From Net Investment Income -- (0.24) (0.34) (0.16) -- (0.13) From Net Realized Gains (3.30) (0.58) -- -- -- -- -------- -------- -------- -------- -------- -------- Total Distributions (3.30) (0.82) (0.34) (0.16) -- (0.13) -------- -------- -------- -------- -------- -------- Net Asset Value, End of Period $38.58 $45.98 $36.53 $37.35 $35.09 $33.99 ======== ======== ======== ======== ======== ======== TOTAL RETURN(3) (9.32)% 28.63% (1.35)% 6.87% 3.24% 17.34% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.80%(4) 0.80% 0.80% 0.80% 0.80% 0.80% Ratio of Net Investment Income (Loss) to Average Net Assets 0.24%(4) 0.31% 0.77% 0.62% 0.19% 0.23% Portfolio Turnover Rate 33% 79% 206% 55% 48% 84% Net Assets, End of Period (in thousands) $143,097 $168,441 $148,717 $198,212 $234,815 $229,596 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 49 Select A Class(1) For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(2) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $45.05 $35.80 $36.63 $34.43 $33.49 $28.66 ------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.04) (0.09) 0.12 0.04 (0.09) (0.07) Net Realized and Unrealized Gain (Loss) (4.07) 9.99 (0.76) 2.16 1.03 4.90 ------- ------- ------- ------- ------- ------- Total From Investment Operations (4.11) 9.90 (0.64) 2.20 0.94 4.83 ------- ------- ------- ------- ------- ------- Distributions From Net Investment Income -- (0.07) (0.19) -- -- --(4) From Net Realized Gains (3.30) (0.58) -- -- -- -- ------- ------- ------- ------- ------- ------- Total Distributions (3.30) (0.65) (0.19) -- -- --(4) ------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $37.64 $45.05 $35.80 $36.63 $34.43 $33.49 ======= ======= ======= ======= ======= ======= TOTAL RETURN(5) (9.55)% 28.07% (1.79)% 6.39% 2.81% 16.86% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.25%(6) 1.25% 1.25% 1.25% 1.25% 1.25% Ratio of Net Investment Income (Loss) to Average Net Assets (0.21)%(6) (0.14)% 0.32% 0.17% (0.26)% (0.22)% Portfolio Turnover Rate 33% 79% 206% 55% 48% 84% Net Assets, End of Period (in thousands) $32,401 $42,770 $21,455 $27,741 $22,626 $29,152 (1) Prior to September 4, 2007, the A Class was referred to as the Advisor Class. (2) Six months ended April 30, 2008 (unaudited). (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. See Notes to Financial Statements. - ------ 50 Select B Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003(2) PER-SHARE DATA Net Asset Value, Beginning of Period $44.03 $35.21 $36.12 $34.21 $33.53 $27.75 ------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.18) (0.34) (0.12) (0.22) (0.35) (0.31) Net Realized and Unrealized Gain (Loss) (3.97) 9.74 (0.79) 2.13 1.03 6.09 ------- ------- ------- ------- ------- ------- Total From Investment Operations (4.15) 9.40 (0.91) 1.91 0.68 5.78 ------- ------- ------- ------- ------- ------- Distributions From Net Realized Gains (3.30) (0.58) -- -- -- -- ------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $36.58 $44.03 $35.21 $36.12 $34.21 $33.53 ======= ======= ======= ======= ======= ======= TOTAL RETURN(4) (9.88)% 27.07% (2.52)% 5.58% 2.03% 20.83% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.00%(5) 2.00% 2.00% 2.00% 2.00% 2.00%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.96)%(5) (0.89)% (0.43)% (0.58)% (1.01)% (1.28)%(5) Portfolio Turnover Rate 33% 79% 206% 55% 48% 84%(6) Net Assets, End of Period (in thousands) $4,384 $5,567 $5,880 $2,501 $2,273 $1,032 (1) Six months ended April 30, 2008 (unaudited). (2) January 31, 2003 (commencement of sale) through October 31, 2003. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2003. See Notes to Financial Statements. - ------ 51 Select C Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003(2) PER-SHARE DATA Net Asset Value, Beginning of Period $44.07 $35.24 $36.15 $34.23 $33.56 $27.75 ------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.18) (0.34) (0.16) (0.22) (0.36) (0.31) Net Realized and Unrealized Gain (Loss) (3.97) 9.75 (0.75) 2.14 1.03 6.12 ------- ------- ------- ------- ------- ------- Total From Investment Operations (4.15) 9.41 (0.91) 1.92 0.67 5.81 ------- ------- ------- ------- ------- ------- Distributions From Net Realized Gains (3.30) (0.58) -- -- -- -- ------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $36.62 $44.07 $35.24 $36.15 $34.23 $33.56 ======= ======= ======= ======= ======= ======= TOTAL RETURN(4) (9.87)% 27.07% (2.52)% 5.58% 2.03% 20.94% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.00%(5) 2.00% 2.00% 2.00% 2.00% 2.00%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.96)%(5) (0.89)% (0.43)% (0.58)% (1.01)% (1.28)%(5) Portfolio Turnover Rate 33% 79% 206% 55% 48% 84%(6) Net Assets, End of Period (in thousands) $774 $1,001 $1,540 $3,511 $3,733 $1,136 (1) Six months ended April 30, 2008 (unaudited). (2) January 31, 2003 (commencement of sale) through October 31, 2003. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2003. See Notes to Financial Statements. - ------ 52 Select R Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $45.33 $36.05 $37.00 $38.34 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.09) (0.15) 0.03 (0.05) Net Realized and Unrealized Gain (Loss) (4.09) 10.01 (0.77) (1.29) ------- ------- ------- ------- Total From Investment Operations (4.18) 9.86 (0.74) (1.34) ------- ------- ------- ------- Distributions From Net Investment Income -- -- (0.21) -- From Net Realized Gains (3.30) (0.58) -- -- ------- ------- ------- ------- Total Distributions (3.30) (0.58) (0.21) -- ------- ------- ------- ------- Net Asset Value, End of Period $37.85 $45.33 $36.05 $37.00 ======= ======= ======= ======= TOTAL RETURN(4) (9.65)% 27.72% (2.04)% (3.50)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.50%(5) 1.50% 1.50% 1.50%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.46)%(5) (0.39)% 0.07% (0.50)%(5) Portfolio Turnover Rate 33% 79% 206% 55%(6) Net Assets, End of Period (in thousands) $29 $32 $24 $24 (1) Six months ended April 30, 2008 (unaudited). (2) July 29, 2005 (commencement of sale) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2005. See Notes to Financial Statements. - ------ 53 Capital Growth Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $14.21 $11.81 $10.60 $10.80 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) 0.01 --(4) --(4) --(4) Net Realized and Unrealized Gain (Loss) (0.86) 2.54 1.21 (0.20) ------- ------- ------- ------- Total From Investment Operations (0.85) 2.54 1.21 (0.20) ------- ------- ------- ------- Distributions From Net Realized Gains (1.05) (0.14) -- -- ------- ------- ------- ------- Net Asset Value, End of Period $12.31 $14.21 $11.81 $10.60 ======= ======= ======= ======= TOTAL RETURN(5) (6.15)% 21.77% 11.42% (1.85)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.01%(6) 1.01% 1.00% 1.00%(6) Ratio of Net Investment Income (Loss) to Average Net Assets 0.19%(6) 0.15% 0.05% (0.12)%(6) Portfolio Turnover Rate 71% 160% 140% 110%(7) Net Assets, End of Period (in thousands) $2,172 $1,139 $86 $25 (1) Six months ended April 30, 2008 (unaudited). (2) July 29, 2005 (commencement of sale) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. (7) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2005. See Notes to Financial Statements. - ------ 54 Capital Growth Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $14.28 $11.84 $10.61 $10.80 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) 0.02 0.04 0.03 --(4) Net Realized and Unrealized Gain (Loss) (0.87) 2.54 1.20 (0.19) ------- ------- ------- ------- Total From Investment Operations (0.85) 2.58 1.23 (0.19) ------- ------- ------- ------- Distributions From Net Realized Gains (1.05) (0.14) -- -- ------- ------- ------- ------- Net Asset Value, End of Period $12.38 $14.28 $11.84 $10.61 ======= ======= ======= ======= TOTAL RETURN(5) (6.12)% 22.06% 11.59% (1.76)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.81%(6) 0.81% 0.80% 0.80%(6) Ratio of Net Investment Income (Loss) to Average Net Assets 0.39%(6) 0.35% 0.25% 0.08%(6) Portfolio Turnover Rate 71% 160% 140% 110%(7) Net Assets, End of Period (in thousands) $31 $33 $27 $25 (1) Six months ended April 30, 2008 (unaudited). (2) July 29, 2005 (commencement of sale) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. (7) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2005. See Notes to Financial Statements. - ------ 55 Capital Growth A Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004(2) PER-SHARE DATA Net Asset Value, Beginning of Period $14.13 $11.78 $10.59 $9.89 $10.00 ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) --(4) (0.01) (0.02) --(4) (0.03) Net Realized and Unrealized Gain (Loss) (0.86) 2.50 1.21 0.70 (0.08) ------- ------- ------- ------- ------- Total From Investment Operations (0.86) 2.49 1.19 0.70 (0.11) ------- ------- ------- ------- ------- Distributions From Net Realized Gains (1.05) (0.14) -- -- -- ------- ------- ------- ------- ------- Net Asset Value, End of Period $12.22 $14.13 $11.78 $10.59 $9.89 ======= ======= ======= ======= ======= TOTAL RETURN(5) (6.26)% 21.40% 11.24% 7.08% (1.10)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.26%(6) 1.26% 1.25% 1.27% 1.25%(6) Ratio of Net Investment Income (Loss) to Average Net Assets (0.06)%(6) (0.10)% (0.20)% (0.03)% (0.43)%(6) Portfolio Turnover Rate 71% 160% 140% 110% 87% Net Assets, End of Period (in thousands) $3,734 $3,171 $2,155 $1,216 $692 (1) Six months ended April 30, 2008 (unaudited). (2) February 27, 2004 (fund inception) through October 31, 2004. (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. See Notes to Financial Statements. - ------ 56 Capital Growth B Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004(2) PER-SHARE DATA Net Asset Value, Beginning of Period $13.74 $11.54 $10.46 $9.84 $10.00 ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.05) (0.10) (0.10) (0.08) (0.08) Net Realized and Unrealized Gain (Loss) (0.84) 2.44 1.18 0.70 (0.08) ------- ------- ------- ------- ------- Total From Investment Operations (0.89) 2.34 1.08 0.62 (0.16) ------- ------- ------- ------- ------- Distributions From Net Realized Gains (1.05) (0.14) -- -- -- ------- ------- ------- ------- ------- Net Asset Value, End of Period $11.80 $13.74 $11.54 $10.46 $9.84 ======= ======= ======= ======= ======= TOTAL RETURN(4) (6.60)% 20.54% 10.33% 6.30% (1.60)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.01%(5) 2.01% 2.00% 2.02% 2.00%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.81)%(5) (0.85)% (0.95)% (0.78)% (1.17)%(5) Portfolio Turnover Rate 71% 160% 140% 110% 87% Net Assets, End of Period (in thousands) $998 $865 $960 $772 $450 (1) Six months ended April 30, 2008 (unaudited). (2) February 27, 2004 (fund inception) through October 31, 2004. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 57 Capital Growth C Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004(2) PER-SHARE DATA Net Asset Value, Beginning of Period $13.74 $11.54 $10.46 $9.84 $10.00 ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.05) (0.10) (0.10) (0.08) (0.08) Net Realized and Unrealized Gain (Loss) (0.84) 2.44 1.18 0.70 (0.08) ------- ------- ------- ------- ------- Total From Investment Operations (0.89) 2.34 1.08 0.62 (0.16) ------- ------- ------- ------- ------- Distributions From Net Realized Gains (1.05) (0.14) -- -- -- ------- ------- ------- ------- ------- Net Asset Value, End of Period $11.80 $13.74 $11.54 $10.46 $9.84 ======= ======= ======= ======= ======= TOTAL RETURN(4) (6.60)% 20.54% 10.33% 6.30% (1.60)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.01%(5) 2.01% 2.00% 2.02% 2.00%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.81)%(5) (0.85)% (0.95)% (0.78)% (1.18)%(5) Portfolio Turnover Rate 71% 160% 140% 110% 87% Net Assets, End of Period (in thousands) $994 $695 $832 $609 $343 (1) Six months ended April 30, 2008 (unaudited). (2) February 27, 2004 (fund inception) through October 31, 2004. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 58 Capital Growth R Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $14.05 $11.74 $10.59 $10.80 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.02) (0.04) (0.05) (0.02) Net Realized and Unrealized Gain (Loss) (0.86) 2.49 1.20 (0.19) ------- ------- ------- ------- Total From Investment Operations (0.88) 2.45 1.15 (0.21) ------- ------- ------- ------- Distributions From Net Realized Gains (1.05) (0.14) -- -- ------- ------- ------- ------- Net Asset Value, End of Period $12.12 $14.05 $11.74 $10.59 ======= ======= ======= ======= TOTAL RETURN(4) (6.38)% 21.13% 10.86% (1.94)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.51%(5) 1.51% 1.50% 1.50%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.31)%(5) (0.35)% (0.45)% (0.62)%(5) Portfolio Turnover Rate 71% 160% 140% 110%(6) Net Assets, End of Period (in thousands) $56 $36 $27 $25 (1) Six months ended April 30, 2008 (unaudited). (2) July 29, 2005 (commencement of sale) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2005. See Notes to Financial Statements. - ------ 59 Focused Growth Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $12.92 $11.42 $10.53 $10.00 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) 0.01 0.04 0.01 --(4) Net Realized and Unrealized Gain (Loss) (0.51) 1.73 0.95 0.53 ------- ------- ------- ------- Total From Investment Operations (0.50) 1.77 0.96 0.53 ------- ------- ------- ------- Distributions From Net Investment Income (0.01) (0.04) --(4) -- From Net Realized Gains (1.46) (0.23) (0.07) -- ------- ------- ------- ------- Total Distributions (1.47) (0.27) (0.07) -- ------- ------- ------- ------- Net Asset Value, End of Period $10.95 $12.92 $11.42 $10.53 ======= ======= ======= ======= TOTAL RETURN(5) (3.94)% 15.78% 9.13% 5.30% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.00%(6) 1.00% 1.00% 1.00%(6) Ratio of Net Investment Income (Loss) to Average Net Assets 0.16%(6) 0.33% 0.07% 0.00%(6) Portfolio Turnover Rate 74% 275% 313% 95% Net Assets, End of Period (in thousands) $13,064 $13,381 $15,837 $12,175 (1) Six months ended April 30, 2008 (unaudited). (2) February 28, 2005 (fund inception) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. See Notes to Financial Statements. - ------ 60 Focused Growth Institutional Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $12.93 $12.59 ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) 0.02 --(4) Net Realized and Unrealized Gain (Loss) (0.52) 0.34 ------- ------- Total From Investment Operations (0.50) 0.34 ------- ------- Distributions From Net Investment Income (0.03) -- From Net Realized Gains (1.46) -- ------- ------- Total Distributions (1.49) -- ------- ------- Net Asset Value, End of Period $10.94 $12.93 ======= ======= TOTAL RETURN(5) (3.89)% 2.70% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.80%(6) 0.80%(6) Ratio of Net Investment Income (Loss) to Average Net Assets 0.36%(6) (0.40)%(6) Portfolio Turnover Rate 74% 275%(7) Net Assets, End of Period (in thousands) $25 $26 (1) Six months ended April 30, 2008 (unaudited). (2) September 28, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. (7) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 61 Focused Growth A Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $12.92 $12.59 ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.01) (0.01) Net Realized and Unrealized Gain (Loss) (0.51) 0.34 ------- ------- Total From Investment Operations (0.52) 0.33 ------- ------- Distributions From Net Realized Gains (1.44) -- ------- ------- Net Asset Value, End of Period $10.96 $12.92 ======= ======= TOTAL RETURN(4) (4.11)% 2.62% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.25%(5) 1.25%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.09)%(5) (0.85)%(5) Portfolio Turnover Rate 74% 275%(6) Net Assets, End of Period (in thousands) $62 $26 (1) Six months ended April 30, 2008 (unaudited). (2) September 28, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 62 Focused Growth B Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $12.91 $12.59 ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.05) (0.02) Net Realized and Unrealized Gain (Loss) (0.50) 0.34 ------- ------- Total From Investment Operations (0.55) 0.32 ------- ------- Distributions From Net Realized Gains (1.35) -- ------- ------- Net Asset Value, End of Period $11.01 $12.91 ======= ======= TOTAL RETURN(4) (4.48)% 2.54% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.00%(5) 2.00%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.84)%(5) (1.60)%(5) Portfolio Turnover Rate 74% 275%(6) Net Assets, End of Period (in thousands) $25 $26 (1) Six months ended April 30, 2008 (unaudited). (2) September 28, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 63 Focused Growth C Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $12.91 $12.59 ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.05) (0.02) Net Realized and Unrealized Gain (Loss) (0.50) 0.34 ------- ------- Total From Investment Operations (0.55) 0.32 ------- ------- Distributions From Net Realized Gains (1.35) -- ------- ------- Net Asset Value, End of Period $11.01 $12.91 ======= ======= TOTAL RETURN(4) (4.48)% 2.54% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.00%(5) 2.00%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.84)%(5) (1.52)%(5) Portfolio Turnover Rate 74% 275%(6) Net Assets, End of Period (in thousands) $83 $76 (1) Six months ended April 30, 2008 (unaudited). (2) September 28, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 64 Focused Growth R Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $12.92 $12.59 ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.02) (0.01) Net Realized and Unrealized Gain (Loss) (0.51) 0.34 ------- ------- Total From Investment Operations (0.53) 0.33 ------- ------- Distributions From Net Realized Gains (1.41) -- ------- ------- Net Asset Value, End of Period $10.98 $12.92 ======= ======= TOTAL RETURN(4) (4.20)% 2.62% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.50%(5) 1.50%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.34)%(5) (1.10)%(5) Portfolio Turnover Rate 74% 275%(6) Net Assets, End of Period (in thousands) $25 $26 (1) Six months ended April 30, 2008 (unaudited). (2) September 28, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 65 Fundamental Equity Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $15.68 $12.88 $11.04 $10.88 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) 0.07 0.14 0.08 0.02 Net Realized and Unrealized Gain (Loss) (1.43) 2.93 2.12 0.14 ------- ------- ------- ------- Total From Investment Operations (1.36) 3.07 2.20 0.16 ------- ------- ------- ------- Distributions From Net Investment Income (0.12) (0.08) -- -- From Net Realized Gains (0.36) (0.19) (0.36) -- ------- ------- ------- ------- Total Distributions (0.48) (0.27) (0.36) -- ------- ------- ------- ------- Net Asset Value, End of Period $13.84 $15.68 $12.88 $11.04 ======= ======= ======= ======= TOTAL RETURN(4) (8.79)% 24.18% 20.37% 1.47% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.01%(5) 1.00% 1.00% 1.00%(5) Ratio of Net Investment Income (Loss) to Average Net Assets 1.05%(5) 0.99% 0.74% 0.59%(5) Portfolio Turnover Rate 26% 82% 174% 101%(6) Net Assets, End of Period (in thousands) $60,086 $53,908 $3,836 $25 (1) Six months ended April 30, 2008 (unaudited). (2) July 29, 2005 (commencement of sale) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the period November 30, 2004 (fund inception) through October 31, 2005. See Notes to Financial Statements. - ------ 66 Fundamental Equity Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $15.70 $12.90 $11.05 $10.88 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) 0.07 0.19 0.12 0.02 Net Realized and Unrealized Gain (Loss) (1.42) 2.91 2.10 0.15 ------- ------- ------- ------- Total From Investment Operations (1.35) 3.10 2.22 0.17 ------- ------- ------- ------- Distributions From Net Investment Income (0.15) (0.11) -- -- From Net Realized Gains (0.36) (0.19) (0.37) -- ------- ------- ------- ------- Total Distributions (0.51) (0.30) (0.37) -- ------- ------- ------- ------- Net Asset Value, End of Period $13.84 $15.70 $12.90 $11.05 ======= ======= ======= ======= TOTAL RETURN(4) (8.73)% 24.43% 20.51% 1.56% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.81%(5) 0.80% 0.80% 0.80%(5) Ratio of Net Investment Income (Loss) to Average Net Assets 1.25%(5) 1.19% 0.94% 0.79%(5) Portfolio Turnover Rate 26% 82% 174% 101%(6) Net Assets, End of Period (in thousands) $1,902 $286 $31 $25 (1) Six months ended April 30, 2008 (unaudited). (2) July 29, 2005 (commencement of sale) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the period November 30, 2004 (fund inception) through October 31, 2005. See Notes to Financial Statements. - ------ 67 Fundamental Equity A Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $15.65 $12.85 $11.03 $10.00 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) 0.06 0.11 0.06 0.02 Net Realized and Unrealized Gain (Loss) (1.43) 2.92 2.11 1.01 ------- ------- ------- ------- Total From Investment Operations (1.37) 3.03 2.17 1.03 ------- ------- ------- ------- Distributions From Net Investment Income (0.09) (0.04) -- -- From Net Realized Gains (0.36) (0.19) (0.35) -- ------- ------- ------- ------- Total Distributions (0.45) (0.23) (0.35) -- ------- ------- ------- ------- Net Asset Value, End of Period $13.83 $15.65 $12.85 $11.03 ======= ======= ======= ======= TOTAL RETURN(4) (8.91)% 23.88% 20.12% 10.30% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.26%(5) 1.25% 1.25% 1.28%(5) Ratio of Net Investment Income (Loss) to Average Net Assets 0.80%(5) 0.74% 0.49% 0.17%(5) Portfolio Turnover Rate 26% 82% 174% 101% Net Assets, End of Period (in thousands) $339,863 $246,322 $37,314 $1,636 (1) Six months ended April 30, 2008 (unaudited). (2) November 30, 2004 (fund inception) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 68 Fundamental Equity B Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $15.45 $12.74 $10.96 $10.00 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) --(4) 0.01 (0.02) (0.06) Net Realized and Unrealized Gain (Loss) (1.42) 2.89 2.07 1.02 ------- ------- ------- ------- Total From Investment Operations (1.42) 2.90 2.05 0.96 ------- ------- ------- ------- Distributions From Net Realized Gains (0.33) (0.19) (0.27) -- ------- ------- ------- ------- Net Asset Value, End of Period $13.70 $15.45 $12.74 $10.96 ======= ======= ======= ======= TOTAL RETURN(5) (9.26)% 23.01% 19.04% 9.60% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.01%(6) 2.00% 2.00% 2.03%(6) Ratio of Net Investment Income (Loss) to Average Net Assets 0.05%(6) (0.01)% (0.26)% (0.58)%(6) Portfolio Turnover Rate 26% 82% 174% 101% Net Assets, End of Period (in thousands) $5,656 $4,889 $1,498 $469 (1) Six months ended April 30, 2008 (unaudited). (2) November 30, 2004 (fund inception) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. See Notes to Financial Statements. - ------ 69 Fundamental Equity C Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $15.46 $12.75 $10.96 $10.00 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) --(4) --(4) (0.03) (0.06) Net Realized and Unrealized Gain (Loss) (1.43) 2.90 2.09 1.02 ------- ------- ------- ------- Total From Investment Operations (1.43) 2.90 2.06 0.96 ------- ------- ------- ------- Distributions From Net Realized Gains (0.33) (0.19) (0.27) -- ------- ------- ------- ------- Net Asset Value, End of Period $13.70 $15.46 $12.75 $10.96 ======= ======= ======= ======= TOTAL RETURN(5) (9.32)% 22.99% 19.13% 9.60% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.01%(6) 2.00% 2.00% 2.03%(6) Ratio of Net Investment Income (Loss) to Average Net Assets 0.05%(6) (0.01)% (0.26)% (0.58)%(6) Portfolio Turnover Rate 26% 82% 174% 101% Net Assets, End of Period (in thousands) $31,076 $24,544 $4,530 $693 (1) Six months ended April 30, 2008 (unaudited). (2) November 30, 2004 (fund inception) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. See Notes to Financial Statements. - ------ 70 Fundamental Equity R Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005(2) PER-SHARE DATA Net Asset Value, Beginning of Period $15.61 $12.81 $11.03 $10.88 ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) 0.04 0.09 0.04 --(4) Net Realized and Unrealized Gain (Loss) (1.44) 2.90 2.08 0.15 ------- ------- ------- ------- Total From Investment Operations (1.40) 2.99 2.12 0.15 ------- ------- ------- ------- Distributions From Net Investment Income (0.05) --(4) -- -- From Net Realized Gains (0.36) (0.19) (0.34) -- ------- ------- ------- ------- Total Distributions (0.41) (0.19) (0.34) -- ------- ------- ------- ------- Net Asset Value, End of Period $13.80 $15.61 $12.81 $11.03 ======= ======= ======= ======= TOTAL RETURN(5) (9.10)% 23.60% 19.67% 1.38% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.51%(6) 1.50% 1.50% 1.50%(6) Ratio of Net Investment Income (Loss) to Average Net Assets 0.55%(6) 0.49% 0.24% 0.09%(6) Portfolio Turnover Rate 26% 82% 174% 101%(7) Net Assets, End of Period (in thousands) $477 $438 $30 $25 (1) Six months ended April 30, 2008 (unaudited). (2) July 29, 2005 (commencement of sale) through October 31, 2005. (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. (7) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the period November 30, 2004 (fund inception) through October 31, 2005. See Notes to Financial Statements. - ------ 71 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the funds' investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the funds. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The funds file their complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The funds' Forms N-Q are available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The funds also make their complete schedule of portfolio holdings for the most recent quarter of their fiscal year available on their website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 72 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The BLENDED INDEX was the benchmark for Focused Growth from February 2005 through February 2008. It combines two widely known indices, the S&P 500 Index and the Russell 1000 Growth Index, which are both weighted at 50%. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 1000® GROWTH INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 1000® VALUE INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 2000® INDEX is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® GROWTH INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 2000® VALUE INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® GROWTH INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL MIDCAP® VALUE INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The S&P 500 INDEX is a market value-weighted index of the stocks of 500 publicly traded U.S. companies chosen for market size, liquidity, and industry group representation that are considered to be leading firms in dominant industries. Each stock's weight in the index is proportionate to its market value. Created by Standard & Poor's, it is considered to be a broad measure of U.S. stock market performance. - ------ 73 NOTES - ------ 74 NOTES - ------ 75 NOTES - ------ 76 [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE . . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE . . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 INVESTORS USING ADVISORS . . . . . . . . . . . . . . . . 1-800-378-9878 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS . . . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES . . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF . . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investments P.O. Box 419200 Kansas City, MO 64141-6200 PRSRT STD U.S. POSTAGE PAID AMERICAN CENTURY COMPANIES American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60498S
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS HERITAGE FUND NEW OPPORTUNITIES II FUND PRESIDENT'S LETTER JONATHAN THOMAS [photo of Jonathan Thomas] Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® Heritage and New Opportunities II funds for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/ Jonathan S. Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns. . . . . . . . . . . . . . . . . . . . . . 2 HERITAGE Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings. . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries . . . . . . . . . . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio . . . . . . . . . . . . . . . . . 6 Schedule of Investments. . . . . . . . . . . . . . . . . . . . . . . 7 NEW OPPORTUNITIES II Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Portfolio Commentary . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Ten Holdings. . . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Five Industries . . . . . . . . . . . . . . . . . . . . . . . . 13 Types of Investments in Portfolio . . . . . . . . . . . . . . . . . 13 Schedule of Investments. . . . . . . . . . . . . . . . . . . . . . . 14 Shareholder Fee Examples . . . . . . . . . . . . . . . . . . . . . . 17 FINANCIAL STATEMENTS Statement of Assets and Liabilities. . . . . . . . . . . . . . . . . 19 Statement of Operations. . . . . . . . . . . . . . . . . . . . . . . 21 Statement of Changes in Net Assets . . . . . . . . . . . . . . . . . 22 Notes to Financial Statements. . . . . . . . . . . . . . . . . . . . 23 Financial Highlights . . . . . . . . . . . . . . . . . . . . . . . . 30 OTHER INFORMATION Additional Information . . . . . . . . . . . . . . . . . . . . . . . 42 Index Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . 43 The opinions expressed in the Market Perspective and each of the Portfolio Commentaries reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of Chief Investment Officer] By Steve Lurito, Chief Investment Officer, U.S. Growth Equity VOLATILITY UP, STOCKS DOWN The six months ended April 30, 2008 saw stocks produce negative returns as market volatility surged in the wake of the subprime credit crisis. In terms of the economy, tighter credit and the slumping housing market hurt consumer spending and confidence, leading many economists to suggest we're already in recession. Meanwhile, mounting losses hurt the banks, brokers, and other big institutional players important for the functioning of the financial markets. Facing dual economic and financial crises, the Federal Reserve (the Fed) took a series of extraordinary steps, slashing interest rates and acting as a lender of last resort not only for banks, but also major brokers. That helped stocks rebound, with many analysts suggesting that the mid-March buy-out of investment bank Bear Stearns--in a deal arranged by the Fed--put a floor under the market. RETURNS BY SIZE, STYLE MIXED Performance by size and style was mixed (see the accompanying table), reflecting the volatile trading during the period, when corporate earnings estimates were revised down sharply. Looking at returns by sector, energy shares were the only segment to produce positive results during the six months. At the other end of the spectrum, credit-related losses took a big bite out of earnings for financials stocks, which performed worst. Consumer discretionary shares also lagged badly, as did information technology stocks, which suffered from poor pricing and demand trends for chips and some consumer-related tech goods. OPPORTUNITY AMID VOLATILITY Despite the uncertainty surrounding the economy, we think growth-oriented stocks can perform well relative to value as proven earnings growth becomes scarce during economic slowdowns. And while we don't see an end to market volatility anytime soon, we view this dynamic as a natural part of the investing cycle--and one that presents us with opportunities to build positions in what we believe are high-quality companies trading at attractive prices. Indeed, investors should rest assured that we're finding no shortage of companies demonstrating sustained earnings growth and business improvement. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% *Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE Heritage Total Returns as of April 30, 2008 Average Annual Returns 6 10 Since Inception months(1) 1 year 5 years years Inception Date INVESTOR CLASS -7.96% 16.35% 20.13% 9.29% 13.19% 11/10/87 RUSSELL MIDCAP GROWTH INDEX(2) -8.44% -1.93% 15.29% 5.75% 11.81%(3) -- RUSSELL MIDCAP INDEX(2) -8.77% -6.34% 16.20% 8.33% 13.30%(3) -- Institutional Class -7.87% 16.59% 20.34% 9.53% 10.56% 6/16/97 A Class(4) No sales charge* -8.08% 16.10% 19.82% 9.02% 9.65% With sales charge* -13.35% 9.43% 18.40% 8.38% 9.05% 7/11/97 B Class No sales charge* -8.46% -- -- -- -2.93%(1) With sales charge* -13.46% -- -- -- -7.93%(1) 9/28/07 C Class No sales charge* -8.44% 15.20% 18.95% -- 8.01% With sales charge* -9.31% 15.20% 18.95% -- 8.01% 6/26/01 R Class -8.23% -- -- -- -2.65%(1) 9/28/07 *Sales charges include initial sales charges and contingent deferred sales charges (CDSCs), as applicable. A Class shares have a 5.75% maximum initial sales charge for equity funds and may be subject to a maximum CDSC of 1.00%. B Class shares redeemed within six years of purchase are subject to a CDSC that declines from 5.00% during the first year after purchase to 0.00% the sixth year after purchase. C Class shares redeemed within 12 months of purchase are subject to a maximum CDSC of 1.00%. The SEC requires that mutual funds provide performance information net of maximum sales charges in all cases where charges could be applied. (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. - A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (3) Since 10/31/87, the date nearest the Investor Class's inception for which data are available. (4) Prior to September 4, 2007, the A Class was referred to as the Advisor Class. Performance, with sales charge, prior to that date has been adjusted to reflect the A Class's current sales charge. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing involves special risks, such as political instability and currency fluctuations. Investing in emerging markets may accentuate these risks. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 3 Heritage Growth of $10,000 Over 10 Years $10,000 investment made April 30, 1998
One-Year Returns Over 10 Years Periods ended April 30 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Investor Class -6.05% 54.89% -7.92% -9.34% -19.98% 20.31% 4.61% 47.33% 16.06% 16.35% Russell Midcap Growth Index 12.33% 53.02% -29.47% -15.01% -16.67% 36.14% 7.05% 28.27% 11.13% -1.93% Russell Midcap Index 5.93% 16.01% 0.29% -0.70% -14.13% 35.45% 14.62% 26.42% 15.24% -6.34% Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing involves special risks, such as political instability and currency fluctuations. Investing in emerging markets may accentuate these risks. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 4 PORTFOLIO COMMENTARY Heritage Portfolio Managers: David Hollond and Greg Walsh In February 2008, Glen Fogle left the Heritage team to focus on the American Century Vista, NT Vista and VP Vista funds. PERFORMANCE SUMMARY Heritage returned -7.96%* for the six months ended April 30, 2008, surpassing the -8.44% return of the portfolio's benchmark, the Russell Midcap Growth Index. As of April 30, 2008, Heritage has also produced returns in excess of its benchmark for the longer investment periods of one, five, and ten years. As discussed in the Market Perspective on page 2, equity markets generally declined during the reporting period, as the subprime-mortgage-driven credit crisis spread to other areas of the economy, and rising energy and commodity prices increased inflation concerns. In this environment, both growth and value stocks lost ground across the capitalization spectrum. Heritage derived relative gains from effective stock selection in the materials and industrials sectors. An overweight allocation to the materials sector also boosted gains. Offsetting those positive contributions, poor stock selection in the energy and consumer discretionary sectors, as well as an underweight position in energy, weighed on Heritage's performance. In spite of the poor overall performance of foreign stocks during the reporting period, the portfolio derived gains from its 18% stake in foreign holdings. MATERIALS GAINED A higher standard of living in emerging-market countries, lower availability of farmland, and greater global focus on biofuels translated into growing global demand for agriculture. That increased demand has in turn driven up commodities prices that benefited select chemicals companies within the materials sector during the reporting period. Notably, agricultural chemicals company K+S AG's share price gained 101% for the reporting period as the company continued to benefit from higher demand in the fertilizer market. Monsanto, which is a producer of corn seed, benefited from escalating corn prices. Since neither of these companies were components of the benchmark, both companies were substantial contributors to relative outperformance. Also in the materials sector, Owens-Illinois--Heritage's largest holding at period end--was a meaningful positive contributor to performance, as the bottling company was one of the rare companies to sharply exceed earnings estimates in the reporting Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Owens-Illinois Inc. 5.0% 2.6% Flowserve Corp. 3.9% 2.3% CSL Ltd. ORD 3.6% 2.2% Monsanto Co. 3.2% 3.0% Nintendo Co., Ltd. ORD 2.6% 4.0% Express Scripts, Inc. 2.4% 1.7% PetroHawk Energy Corp. 2.3% -- Urban Outfitters Inc. 2.1% -- Vestas Wind Systems AS ORD 2.0% 0.6% Invitrogen Corp. 1.8% 1.5% *All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. - ------ 5 Heritage period. For the first quarter of 2008 in particular, the company's earnings more than tripled as it benefited from increased prices, an improved product mix, and manufacturing efficiencies. INDUSTRIALS CONTRIBUTED, BUT CERTAIN HOLDINGS LAGGED Within the industrials sector, the portfolio held an overweight position in machinery company Flowserve. A maker of pumps, seals, and valves to end users in the oil and gas, power, chemicals, and water industries, Flowserve was the largest contributor to portfolio performance for the reporting period as its share price gained 58%. Heritage also benefited from an overweight position in the electrical equipment industry, where we focused on companies involved with alternative energy. Within this emerging group, we have succeeded in selecting some of the largest beneficiaries of increasing demand. Notably, an overweight stake in First Solar aided absolute and relative gains as the manufacturer of solar modules saw its share price surge 84%. Elsewhere in the industrials sector, we maintained an overweight position in the aerospace and defense industry. Holdings within this group have contributed significantly to portfolio gains in the past, benefiting from a replacement cycle and expanding orders in global aviation. During the reporting period, though, this group lost ground amid market volatility and profit-taking. BE Aerospace, in particular, declined 19% and detracted from portfolio performance. CONSUMER DISCRETIONARY DETRACTED The consumer discretionary group also weighed on Heritage's performance. An overweight stake in ITT Educational Services hindered performance as the private education company suffered from the fallout from the credit crunch. As with the subprime mortgage industry, private education firms experienced a loss of liquidity as investors shied away from student loans. OUTLOOK Heritage's investment process focuses on medium-sized companies with accelerating revenue and earnings growth rates and share price momentum. We believe that active investing in such companies will generate outperformance over time compared with the Russell Midcap Growth Index. Despite the volatility and the market's tilt away from momentum-style investing during the course of the reporting period, we will remain focused on our time-tested process. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Chemicals 6.8% 3.5% Machinery 6.1% 5.3% Software 6.0% 5.5% Biotechnology 5.9% 3.8% Semiconductors & Semiconductor Equipment 5.7% 6.3% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 81.1% 86.0% Foreign Common Stocks(1) 18.1% 13.0% TOTAL COMMON STOCKS 99.2% 99.0% Temporary Cash Investments 1.7% 1.0% Other Assets and Liabilities (0.9)% --(2) (1) Includes depositary shares, dual listed securities and foreign ordinary shares. (2) Category is less than 0.05% of total net assets. - ------ 6 SCHEDULE OF INVESTMENTS Heritage APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 99.2% AEROSPACE & DEFENSE -- 3.3% 274,200 Alliant Techsystems Inc.(1) $30,096,196 1,050,651 BE Aerospace, Inc.(1) 42,404,274 169,352 Precision Castparts Corp. 19,909,021 ------------- 92,409,491 ------------- BEVERAGES -- 0.9% 402,480 Central European Distribution Corp.(1) 24,519,082 ------------- BIOTECHNOLOGY -- 5.9% 1,156,600 BioMarin Pharmaceutical Inc.(1) 42,169,636 346,500 Celgene Corp.(1) 21,531,510 2,681,800 CSL Ltd. ORD 100,642,425 ------------- 164,343,571 ------------- CAPITAL MARKETS -- 1.9% 415,725 Janus Capital Group Inc. 11,665,244 483,600 Raymond James Financial, Inc. 13,913,172 886,700 Waddell & Reed Financial, Inc. Cl A 30,023,662 ------------- 55,602,078 ------------- CHEMICALS -- 6.8% 378,200 Celanese Corp., Series A 16,924,450 127,739 CF Industries Holdings, Inc. 17,078,704 108,300 K+S AG ORD 45,596,326 768,430 Monsanto Co. 87,616,389 186,900 Mosaic Co. (The)(1) 22,897,119 ------------- 190,112,988 ------------- COMMERCIAL BANKS -- 0.5% 389,500 BB&T Corporation 13,355,955 ------------- COMMERCIAL SERVICES & SUPPLIES -- 1.4% 383,300 Copart, Inc.(1) 15,665,471 370,500 FTI Consulting, Inc.(1) 23,712,000 ------------- 39,377,471 ------------- COMMUNICATIONS EQUIPMENT -- 1.9% 969,200 JDS Uniphase Corp.(1) 13,869,252 333,900 Research In Motion Ltd.(1) 40,612,257 ------------- 54,481,509 ------------- COMPUTERS & PERIPHERALS -- 2.1% 250,027 Apple Inc.(1) 43,492,197 880,500 QLogic Corp.(1) 14,052,780 ------------- 57,544,977 ------------- Shares Value CONSTRUCTION & ENGINEERING -- 1.4% 387,380 Foster Wheeler Ltd.(1) $24,672,232 456,200 KBR, Inc. 13,156,808 ------------- 37,829,040 ------------- CONTAINERS & PACKAGING -- 5.5% 514,300 Crown Holdings Inc.(1) 13,803,812 2,539,600 Owens-Illinois Inc.(1) 140,058,940 ------------- 153,862,752 ------------- DISTRIBUTORS -- 0.8% 988,100 LKQ Corp.(1) 21,501,056 ------------- DIVERSIFIED -- 0.8% 856,600 Financial Select Sector SPDR Fund 22,648,504 ------------- DIVERSIFIED CONSUMER SERVICES -- 1.0% 129,700 Capella Education Co.(1) 8,364,353 245,951 DeVry Inc. 14,019,207 30,700 Strayer Education, Inc. 5,700,683 ------------- 28,084,243 ------------- DIVERSIFIED FINANCIAL SERVICES -- 0.5% 372,500 Nasdaq Stock Market, Inc. (The)(1) 13,577,625 ------------- ELECTRICAL EQUIPMENT -- 4.5% 442,881 Energy Conversion Devices Inc.(1) 14,433,492 96,088 First Solar Inc.(1) 28,056,735 1,058,900 JA Solar Holdings Co., Ltd. ADR(1) 25,424,189 515,000 Vestas Wind Systems AS ORD(1) 56,548,342 ------------- 124,462,758 ------------- ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.7% 492,123 Dolby Laboratories Inc. Cl A(1) 19,758,738 ------------- ENERGY EQUIPMENT & SERVICES -- 4.3% 303,758 Cameron International Corp.(1) 14,954,006 400,500 Dresser-Rand Group Inc.(1) 14,646,285 568,800 Hercules Offshore Inc.(1) 14,993,568 200,500 National Oilwell Varco, Inc.(1) 13,724,225 470,300 Patterson-UTI Energy Inc. 13,140,182 455,700 Seadrill Ltd. 13,879,642 413,500 Weatherford International Ltd.(1) 33,357,046 ------------- 118,694,954 ------------- FOOD PRODUCTS -- 1.0% 242,600 Bunge Ltd. 27,678,234 ------------- - ------ 7 Heritage Shares Value HEALTH CARE EQUIPMENT & SUPPLIES -- 1.9% 49,900 Intuitive Surgical Inc.(1) $14,434,074 794,300 Varian Medical Systems, Inc.(1) 37,236,784 ------------- 51,670,858 ------------- HEALTH CARE PROVIDERS & SERVICES -- 3.3% 947,000 Express Scripts, Inc.(1) 66,308,940 520,200 Medco Health Solutions Inc.(1) 25,770,708 ------------- 92,079,648 ------------- HOTELS, RESTAURANTS & LEISURE -- 2.2% 213,910 Bally Technologies, Inc.(1) 7,206,628 400,410 International Game Technology 13,910,243 141,300 Panera Bread Co. Cl A(1) 7,384,338 906,000 WMS Industries Inc.(1) 32,788,140 ------------- 61,289,349 ------------- INDUSTRIAL CONGLOMERATES -- 2.2% 897,190 McDermott International, Inc.(1) 48,071,440 196,700 Walter Industries Inc. 13,643,112 ------------- 61,714,552 ------------- INSURANCE -- 0.3% 144,699 Assurant, Inc. 9,405,435 ------------- INTERNET & CATALOG RETAIL -- 1.6% 352,041 priceline.com Inc.(1) 44,934,513 ------------- INTERNET SOFTWARE & SERVICES -- 0.7% 203,100 Equinix Inc.(1) 18,364,302 ------------- IT SERVICES -- 1.4% 138,100 MasterCard Inc. Cl A 38,413,896 ------------- LIFE SCIENCES TOOLS & SERVICES -- 3.7% 275,765 Covance Inc.(1) 23,106,349 536,200 Invitrogen Corp.(1) 50,172,234 627,200 Parexel International Corp.(1) 15,930,880 244,200 Thermo Fisher Scientific Inc.(1) 14,131,854 ------------- 103,341,317 ------------- MACHINERY -- 6.1% 681,100 AGCO Corp.(1) 40,954,543 879,649 Flowserve Corp. 109,155,645 247,200 Joy Global Inc. 18,354,600 ------------- 168,464,788 ------------- MEDIA -- 1.3% 496,036 Liberty Global, Inc. Series A(1) 17,554,714 521,400 Liberty Global, Inc. Series C(1) 17,310,480 ------------- 34,865,194 ------------- METALS & MINING -- 0.7% 299,500 Agnico-Eagle Mines Ltd. 18,703,775 ------------- MULTILINE RETAIL -- 0.3% 293,000 Big Lots, Inc.(1) 7,919,790 ------------- Shares Value OIL, GAS & CONSUMABLE FUELS -- 5.2% 567,400 Alpha Natural Resources, Inc.(1) $27,604,010 472,800 Arena Resources Inc.(1) 21,228,720 103,900 Patriot Coal Corp.(1) 6,862,595 98,400 Peabody Energy Corp. 6,015,192 2,658,900 PetroHawk Energy Corp.(1) 62,856,396 485,900 Quicksilver Resources Inc.(1) 20,159,991 ------------- 144,726,904 ------------- PERSONAL PRODUCTS -- 0.7% 464,000 Avon Products, Inc. 18,105,280 ------------- REAL ESTATE INVESTMENT TRUSTS (REITS) -- 0.5% 333,400 Plum Creek Timber Co. Inc. 13,616,056 ------------- ROAD & RAIL -- 1.9% 372,300 CSX Corp. 23,436,285 498,400 Norfolk Southern Corp. 29,694,672 ------------- 53,130,957 ------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 5.7% 713,500 Intersil Corp. Cl A 19,064,720 544,100 Linear Technology Corp. 19,021,736 1,073,400 Marvell Technology Group Ltd.(1) 13,900,530 498,033 MEMC Electronic Materials Inc.(1) 31,361,138 537,100 Microchip Technology Inc. 19,738,425 1,107,400 Semiconductor HOLDRs Trust 33,853,218 237,593 Varian Semiconductor Equipment Associates, Inc.(1) 8,703,032 500,000 Xilinx, Inc. 12,385,000 ------------- 158,027,799 ------------- SOFTWARE -- 6.0% 1,477,574 Activision, Inc.(1) 39,968,377 260,400 Electronic Arts Inc.(1) 13,402,788 378,400 McAfee Inc.(1) 12,581,800 132,300 Nintendo Co., Ltd. ORD 72,641,281 289,600 Ubisoft Entertainment SA ORD(1) 29,216,533 ------------- 167,810,779 ------------- SPECIALTY RETAIL -- 5.5% 873,156 GameStop Corp. Cl A(1) 48,058,506 460,800 Guess?, Inc. 17,639,424 1,797,900 Pier 1 Imports, Inc.(1) 14,023,620 411,200 Ross Stores, Inc. 13,771,088 1,724,400 Urban Outfitters Inc.(1) 59,060,700 ------------- 152,553,338 ------------- - ------ 8 Heritage Shares Value TEXTILES, APPAREL & LUXURY GOODS -- 1.8% 172,900 Phillips-Van Heusen Corp. $ 7,298,109 512,300 Polo Ralph Lauren Corp. 31,772,846 240,500 Warnaco Group Inc. (The)(1) 11,096,670 ------------- 50,167,625 ------------- WIRELESS TELECOMMUNICATION SERVICES -- 1.0% 354,300 MetroPCS Communications, Inc.(1) 6,958,452 475,800 NII Holdings, Inc.(1) 21,763,092 ------------- 28,721,544 ------------- TOTAL COMMON STOCKS (Cost $2,148,810,928) 2,757,872,725 ------------- Value Temporary Cash Investments -- 1.7% Repurchase Agreement, Bank of America Securities, LLC, (collateralized by various U.S. Treasury obligations, 0.625%, 4/15/13, valued at $48,887,847), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $47,902,555) (Cost $47,900,000) $ 47,900,000 -------------- TOTAL INVESTMENT SECURITIES -- 100.9% (Cost $2,196,710,928) 2,805,772,725 -------------- OTHER ASSETS AND LIABILITIES -- (0.9)% (25,345,918) -------------- TOTAL NET ASSETS -- 100.0% $2,780,426,807 ============== Forward Foreign Currency Exchange Contracts Unrealized Contracts to Sell Settlement Date Value Gain (Loss) 52,965,550 AUD for USD 5/30/08 $ 49,770,689 $(250,548) 136,217,500 DKK for USD 5/30/08 28,509,672 9,191 24,077,068 Euro for USD 5/30/08 37,556,889 73,883 3,830,085,000 JPY for USD 5/30/08 36,895,953 (78,550) 34,974,975 NOK for USD 5/30/08 6,853,378 1,235 ------------- ------------- $159,586,581 $(244,789) ============= ============= (Value on Settlement Date $159,341,792) Notes to Schedule of Investments ADR = American Depositary Receipt AUD = Australian Dollar DKK = Danish Krone HOLDRs = Holding Company Depositary Receipts JPY = Japanese Yen NOK = Norwegian Krona ORD = Foreign Ordinary Share SPDR = Standard and Poor's Depositary Receipt USD = United States Dollar (1) Non-income producing. See Notes to Financial Statements. - ------ 9 PERFORMANCE New Opportunities II Total Returns as of April 30, 2008 Average Annual Returns Since Inception 6 months(1) 1 year 5 years Inception Date INVESTOR CLASS -16.02% -1.11% 17.10% 9.16% 6/1/01 RUSSELL 2000 GROWTH INDEX(2) -14.14% -6.71% 13.32% 3.45% -- Institutional Class -15.90% -- -- -4.10%(1) 5/18/07 A Class No sales charge* -16.11% -1.25% 16.80% 16.01% With sales charge* -20.92% -6.97% 15.44% 14.73% 1/31/03 B Class No sales charge* -16.43% -2.02% 15.94% 15.15% With sales charge* -21.43% -6.02% 15.83% 15.04% 1/31/03 C Class No sales charge* -16.46% -2.01% 15.97%(3) 15.22%(3) With sales charge* -17.29% -2.01% 15.97%(3) 15.22%(3) 1/31/03 R Class -16.23% -- -- -12.52%(1) 9/28/07 * Sales charges include initial sales charges and contingent deferred sales charges (CDSCs), as applicable. A Class shares have a 5.75% maximum initial sales charge for equity funds and may be subject to a maximum CDSC of 1.00%. B Class shares redeemed within six years of purchase are subject to a CDSC that declines from 5.00% during the first year after purchase to 0.00% the sixth year after purchase. C Class shares redeemed within 12 months of purchase are subject to a maximum CDSC of 1.00%. The SEC requires that mutual funds provide performance information net of maximum sales charges in all cases where charges could be applied. (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. - A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (3) Class returns would have been lower if distribution and service fees had not been waived from 2/1/03 to 6/30/03. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Historically, small company stocks have been more volatile than the stocks of larger, more established companies. The fund's investment process may involve high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. The fund's performance may be affected by investments in initial public offerings. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 10 New Opportunities II Growth of $10,000 Over Life of Class $10,000 investment made June 1, 2001
One-Year Returns Over Life of Class Periods ended April 30 2002* 2003 2004 2005 2006 2007 2008 Investor Class 6.00% -21.51% 49.04% -1.18% 39.69% 8.31% -1.11% Russell 2000 Growth Index -11.57% -23.50% 41.57% -0.55% 36.13% 4.53% -6.71% * From 6/1/01, the Investor Class's inception date. Not annualized. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Historically, small company stocks have been more volatile than the stocks of larger, more established companies. The fund's investment process may involve high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. The fund's performance may be affected by investments in initial public offerings. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 11 PORTFOLIO COMMENTARY New Opportunities II Portfolio Managers: Stafford Southwick and Matthew Ferretti PERFORMANCE SUMMARY New Opportunities II returned -16.02%* for the six months ended April 30, 2008, trailing the -14.14% return of its benchmark, the Russell 2000 Growth Index. The fund's return reflected the underperformance of small-cap stocks in general, and small-cap growth issues in particular. Furthermore, our investment approach faced considerable headwinds--investors shifted away from momentum stocks, market volatility increased sharply, and sector rotation accelerated as many of the best-performing sectors from 2007 fell out of favor in early 2008. Our investment style often lags in this kind of transitional environment, and the six-month period was no exception. Despite this recent underperformance, however, the fund's long-term returns remain robust (see pages 10-11 for historical performance information). TECHNOLOGY LAGGED Stock selection in the information technology sector was the main factor behind the fund's underperformance of its benchmark. Stock choices among electronic equipment manufacturers and software companies had the biggest negative impact. The most significant underperformer was Synaptics, which makes touchpads for laptops, MP3 players, and other mobile devices. Concerns about weaker consumer spending and lost market share sent the stock sharply lower in early 2008, and we eliminated it from the portfolio. Brightpoint, the leading distributor of wireless devices, was another technology stock hurt by the slowdown in consumer spending, both domestically and overseas. In addition, one of the company's largest customers, Motorola, struggled during the period as its market share deteriorated. INDUSTRIALS DETRACTED The portfolio's industrial stocks also lagged their counterparts in the benchmark index. Some of the portfolio's biggest winners in 2007 were dry bulk carriers--large ships that carry dry goods such as iron ore and coal across oceans. Strong demand for dry goods led to a shortage of ship capacity, causing day rates to rise sharply. However, day rates peaked in late 2007 and then dropped substantially amid a seasonal slowdown and annual contract negotiations between China and the leading dry goods exporters. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Darling International Inc. 2.0% 1.3% priceline.com Inc. 1.9% 1.9% Tupperware Brands Corp. 1.7% 1.1% CyberSource Corp. 1.7% -- Chimera Investment Corp 1.6% -- ManTech International Corp. Cl A 1.6% 0.9% Syniverse Holdings, Inc. 1.5% 1.1% Sybase, Inc. 1.5% -- PerkinElmer, Inc. 1.5% 1.0% Perrigo Co. 1.5% -- * All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. - ------ 12 New Opportunities II Fund holdings DryShips, Diana Shipping, and Eagle Bulk Shipping slumped during the period, and although we reduced our positions in each of these stocks, we continue to own them as day rates have begun to recover. CONSUMER AND ENERGY STOCKS ADDED VALUE On the positive side, the portfolio's consumer and energy stocks contributed favorably to performance relative to the Russell 2000 Growth Index. Among consumer stocks, the top contributor was Darling International, which renders animal by-products and recycles used cooking oil into useable oils and proteins for the agricultural industry. Darling's profit margins expanded as commodity prices surged. Household products maker Tupperware Brands and online travel agent priceline.com were also major contributors. Tupperware reported strong profit growth thanks to its substantial international business and expansion into emerging markets. Priceline enjoyed strong growth in its European hotel reservation unit and gained market share domestically by eliminating booking fees. Six of the top ten relative performance contributors came from the energy sector. The top contributors were companies with an emphasis on natural gas, whose price surged during the period. Winners included Cabot Oil & Gas, Forest Oil, and Encore Acquisition. IPOS CONTRIBUTED FAVORABLY We participated in 16 initial public offerings (IPOs) during the period, and overall they added value to portfolio performance. The best performers included energy exploration and production company Approach Resources and Chinese advertising services provider VisionChina Media. OUTLOOK After fearing the worst over the last six months, the stock market has started to price in better credit and economic conditions. Consequently, we have recently pursued investment opportunities in the technology, financials, and consumer discretionary sectors. As always, we continue to seek out companies with improving business fundamentals, accelerating earnings and revenue growth, and price momentum. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Oil, Gas & Consumable Fuels 6.9% 5.3% Commercial Banks 5.6% 0.9% Chemicals 5.2% 6.3% Internet Software & Services 4.7% 3.2% IT Services 4.3% 2.2% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 91.8% 88.0% Foreign Common Stocks(1) 7.1% 7.7% TOTAL COMMON STOCKS 98.9% 95.7% Temporary Cash Investments 0.8% 4.9% Other Assets and Liabilities 0.3% (0.6)% (1) Includes depositary shares, dual listed securities and foreign ordinary shares - ------ 13 SCHEDULE OF INVESTMENTS New Opportunities II APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 98.9% AEROSPACE & DEFENSE -- 3.7% 40,462 Alliant Techsystems Inc.(1) $4,441,109 97,870 Curtiss-Wright Corp. 4,647,846 126,540 Esterline Technologies Corp.(1) 7,043,217 193,135 Orbital Sciences Corp.(1) 5,197,263 ------------ 21,329,435 ------------ AUTO COMPONENTS -- 0.7% 270,435 Exide Technologies(1) 3,945,647 ------------ BEVERAGES -- 1.4% 121,458 Central European Distribution Corp.(1) 7,399,221 ------------ BIOTECHNOLOGY -- 3.5% 35,596 Alexion Pharmaceuticals Inc.(1) 2,505,246 77,919 BioMarin Pharmaceutical Inc.(1) 2,840,927 249,114 Cubist Pharmaceuticals Inc.(1) 4,822,847 157,114 Emergent Biosolutions Inc.(1) 1,478,443 109,287 Martek Biosciences Corp.(1) 3,853,460 12,681 Myriad Genetics Inc.(1) 526,769 19,444 Onyx Pharmaceuticals, Inc.(1) 683,651 55,151 OSI Pharmaceuticals Inc.(1) 1,910,982 18,176 United Therapeutics Corp.(1) 1,535,872 ------------ 20,158,197 ------------ CAPITAL MARKETS -- 1.9% 108,709 Investment Technology Group Inc.(1) 5,246,296 158,963 Waddell & Reed Financial, Inc. Cl A 5,382,488 ------------ 10,628,784 ------------ CHEMICALS -- 5.2% 112,231 Airgas Inc. 5,401,678 124,509 Calgon Carbon Corp.(1) 1,774,253 153,455 Koppers Holdings Inc. 7,433,359 48,385 OM Group, Inc.(1) 2,649,563 108,398 SGL Carbon AG ORD(1) 7,416,382 127,167 Terra Industries Inc.(1) 4,814,543 ------------ 29,489,778 ------------ COMMERCIAL BANKS -- 5.6% 305,180 BancorpSouth Inc. 7,333,474 62,346 First Financial Bankshares Inc. 2,804,947 249,692 FirstMerit Corp. 5,123,679 352,181 Fulton Financial Corp. 4,391,697 98,083 Hancock Holding Co. 4,047,885 Shares Value 82,920 Independent Bank Corp. $2,423,752 158,691 Oriental Financial Group 2,983,391 182,448 Sterling Bancorp 2,993,972 ------------ 32,102,797 ------------ COMMERCIAL SERVICES & SUPPLIES -- 2.8% 58,754 Copart, Inc.(1) 2,401,276 96,648 FTI Consulting, Inc.(1) 6,185,472 84,255 IHS Inc. Cl A(1) 5,565,043 125,422 Knoll Inc. 1,632,994 ------------ 15,784,785 ------------ CONSUMER FINANCE -- 0.8% 381,740 EZCORP, Inc. Cl A(1) 4,634,324 ------------ CONTAINERS & PACKAGING -- 0.7% 63,013 Greif, Inc. Cl A 4,070,640 ------------ DISTRIBUTORS -- 1.4% 112,352 DXP Enterprises Inc.(1) 4,636,767 141,641 LKQ Corp.(1) 3,082,108 ------------ 7,718,875 ------------ DIVERSIFIED CONSUMER SERVICES -- 1.1% 113,989 DeVry Inc. 6,497,373 ------------ ELECTRICAL EQUIPMENT -- 2.8% 111,168 American Superconductor Corp.(1) 2,810,327 249,905 EnerSys(1) 5,847,777 197,188 GrafTech International Ltd.(1) 3,874,744 83,911 Powell Industries, Inc.(1) 3,530,136 ------------ 16,062,984 ------------ ELECTRONIC EQUIPMENT & INSTRUMENTS -- 2.9% 293,456 Brightpoint Inc.(1) 2,688,057 254,919 Cognex Corp. 6,423,958 71,524 FARO Technologies, Inc.(1) 2,520,506 34,801 Itron Inc.(1) 3,239,277 108,203 Orbotech Ltd.(1) 1,898,963 ------------ 16,770,761 ------------ ENERGY EQUIPMENT & SERVICES -- 3.3% 53,246 Dril-Quip Inc.(1) 3,043,541 90,612 Exterran Holdings, Inc.(1) 6,051,976 98,548 Natural Gas Services Group Inc.(1) 2,453,845 671,943 Parker Drilling Co.(1) 5,388,983 25,849 W-H Energy Services Inc.(1) 1,997,869 ------------ 18,936,214 ------------ FOOD & STAPLES RETAILING -- 1.0% 119,033 Andersons Inc. (The) 5,410,050 ------------ - ------ 14 New Opportunities II Shares Value FOOD PRODUCTS -- 2.5% 195,610 Cosan Ltd. Cl A(1) $2,593,789 752,585 Darling International Inc.(1) 11,491,973 ------------ 14,085,762 ------------ GAS UTILITIES -- 0.5% 58,264 Northwest Natural Gas Co. 2,614,306 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 2.9% 58,451 Kinetic Concepts Inc.(1) 2,318,167 200,565 Merit Medical Systems Inc.(1) 2,950,311 112,454 NuVasive, Inc.(1) 4,290,120 212,412 Zoll Medical Corp.(1) 7,090,312 ------------ 16,648,910 ------------ HEALTH CARE PROVIDERS & SERVICES -- 2.1% 92,482 Amsurg Corp.(1) 2,361,990 119,190 CardioNet, Inc.(1) 2,753,289 130,428 IPC The Hospitalist Co., Inc.(1) 3,061,145 136,310 Providence Service Corp. (The)(1) 3,835,764 ------------ 12,012,188 ------------ HOTELS, RESTAURANTS & LEISURE -- 1.4% 283,883 Burger King Holdings, Inc. 7,920,336 ------------ HOUSEHOLD DURABLES -- 1.7% 245,113 Tupperware Brands Corp. 9,657,452 ------------ INDUSTRIAL CONGLOMERATES -- 0.4% 33,544 Walter Industries Inc. 2,326,612 ------------ INSURANCE -- 0.6% 523,700 Amil Participacoes SA ORD 3,182,533 ------------ INTERNET & CATALOG RETAIL -- 1.9% 86,569 priceline.com Inc.(1) 11,049,667 ------------ INTERNET SOFTWARE & SERVICES -- 4.7% 1,136,136 Art Technology Group, Inc.(1) 4,067,367 575,721 AsiaInfo Holdings, Inc.(1) 7,006,524 18,665 Equinix Inc.(1) 1,687,689 226,856 Switch & Data Facilities Co. Inc.(1) 3,434,600 120,958 Vocus Inc.(1) 3,361,423 356,828 Websense Inc.(1) 6,940,305 ------------ 26,497,908 ------------ IT SERVICES -- 4.3% 116,125 CACI International Inc.(1) 5,820,185 527,478 CyberSource Corp.(1) 9,573,726 190,661 ManTech International Corp. Cl A(1) 9,107,876 ------------ 24,501,787 ------------ Shares Value LIFE SCIENCES TOOLS & SERVICES -- 3.7% 28,525 Illumina, Inc.(1) $2,221,812 128,735 Kendle International Inc.(1) 5,495,697 187,637 Parexel International Corp.(1) 4,765,980 319,842 PerkinElmer, Inc. 8,495,004 ------------ 20,978,493 ------------ MACHINERY -- 3.0% 39,091 Bucyrus International, Inc. 4,922,730 34,855 Key Technology, Inc.(1) 1,074,231 34,065 Middleby Corp. (The)(1) 2,137,579 42,672 Valmont Industries, Inc. 4,201,485 114,082 Westinghouse Air Brake Technologies Corp. 4,891,836 ------------ 17,227,861 ------------ MARINE -- 2.2% 151,742 Diana Shipping Inc. 4,606,887 107,333 Eagle Bulk Shipping Inc. 3,158,810 88,247 Kirby Corporation(1) 4,839,466 ------------ 12,605,163 ------------ MEDIA -- 2.1% 337,254 Valassis Communications Inc.(1) 4,789,006 204,090 VisionChina Media Inc. ADR(1) 3,010,328 249,449 World Wrestling Entertainment, Inc. Cl A 4,402,775 ------------ 12,202,109 ------------ METALS & MINING -- 0.6% 56,141 Compass Minerals International Inc. 3,536,883 ------------ OIL, GAS & CONSUMABLE FUELS -- 6.9% 37,707 Alpha Natural Resources, Inc.(1) 1,834,446 264,338 Approach Resources Inc.(1) 5,009,205 90,821 Cabot Oil & Gas Corp. 5,174,072 83,775 Concho Resources Inc.(1) 2,309,677 153,256 Encore Acquisition Co.(1) 6,993,071 130,046 Forest Oil Corp.(1) 7,663,610 45,629 Foundation Coal Holdings, Inc. 2,736,827 63,635 Quicksilver Resources Inc.(1) 2,640,216 370,720 TXCO Resources, Inc.(1) 4,737,802 ------------ 39,098,926 ------------ PERSONAL PRODUCTS -- 1.7% 167,190 American Oriental Bioengineering Inc.(1) 1,608,368 81,058 Herbalife Ltd. 3,548,719 153,327 Inter Parfums, Inc. 4,440,350 ------------ 9,597,437 ------------ - ------ 15 New Opportunities II Shares Value PHARMACEUTICALS -- 1.5% 203,203 Perrigo Co. $8,329,291 ------------ REAL ESTATE INVESTMENT TRUSTS (REITS) -- 4.3% 108,714 American Campus Communities Inc. 3,319,038 332,481 Capstead Mortgage Corp. 4,289,005 671,943 Chimera Investment Corp. 9,319,849 96,317 Hatteras Financial Corp.(1) 2,434,894 406,583 U-Store-It Trust 4,907,457 ------------ 24,270,243 ------------ ROAD & RAIL -- 0.3% 56,146 J.B. Hunt Transport Services, Inc. 1,907,280 ------------ SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 2.4% 172,570 Amkor Technology Inc.(1) 1,648,044 343,064 Anadigics, Inc.(1) 3,828,594 326,570 Microsemi Corp.(1) 8,000,965 ------------ 13,477,603 ------------ SOFTWARE -- 3.3% 238,045 Lawson Software Inc.(1) 1,901,980 165,978 Magma Design Automation, Inc.(1) 1,548,575 111,800 MICROS Systems, Inc.(1) 3,985,670 265,587 NetScout Systems, Inc.(1) 2,655,870 293,951 Sybase, Inc.(1) 8,648,038 ------------ 18,740,133 ------------ SPECIALTY RETAIL -- 2.0% 148,533 Aeropostale Inc.(1) 4,721,864 201,423 Dress Barn Inc.(1) 2,711,154 118,411 hhgregg, Inc.(1) 1,216,081 371,919 Pier 1 Imports, Inc.(1) 2,900,968 ------------ 11,550,067 ------------ Shares Value TEXTILES, APPAREL & LUXURY GOODS -- 1.1% 20,539 Deckers Outdoor Corp.(1) $2,835,820 220,069 Maidenform Brands, Inc.(1) 3,279,028 ------------ 6,114,848 ------------ WATER UTILITIES -- 0.5% 231,989 Cascal N.V.(1) 2,811,707 ------------ WIRELESS TELECOMMUNICATION SERVICES -- 1.5% 555,900 Syniverse Holdings, Inc.(1) 8,733,189 ------------ TOTAL COMMON STOCKS (Cost $498,830,536) 562,618,559 ------------ Temporary Cash Investments -- 0.8% Repurchase Agreement, Bank of America Securities, LLC, (collateralized by various U.S. Treasury obligations, 0.625%, 4/15/13, valued at $4,592,804), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $4,500,240) (Cost $4,500,000) 4,500,000 ------------ TOTAL INVESTMENT SECURITIES -- 99.7% (Cost $503,330,536) 567,118,559 ------------ OTHER ASSETS AND LIABILITIES -- 0.3% 1,715,173 ------------ TOTAL NET ASSETS -- 100.0% $568,833,732 ============ Notes to Schedule of Investments ADR = American Depositary Receipt ORD = Foreign Ordinary Share (1) Non-income producing. See Notes to Financial Statements. - ------ 16 SHAREHOLDER FEE EXAMPLES (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 17 Beginning Expenses Paid Account Ending During Period* Annualized Value Account Value 11/1/07 - Expense 11/1/07 4/30/08 4/30/08 Ratio* Heritage ACTUAL Investor Class $1,000 $920.40 $4.77 1.00% Institutional Class $1,000 $921.30 $3.82 0.80% A Class $1,000 $919.20 $5.96 1.25% B Class $1,000 $915.40 $9.52 2.00% C Class $1,000 $915.60 $9.53 2.00% R Class $1,000 $917.70 $7.15 1.50% HYPOTHETICAL Investor Class $1,000 $1,019.89 $5.02 1.00% Institutional Class $1,000 $1,020.89 $4.02 0.80% A Class $1,000 $1,018.65 $6.27 1.25% B Class $1,000 $1,014.92 $10.02 2.00% C Class $1,000 $1,014.92 $10.02 2.00% R Class $1,000 $1,017.40 $7.52 1.50% New Opportunities II ACTUAL Investor Class $1,000 $839.80 $6.27 1.37% Institutional Class $1,000 $841.00 $5.36 1.17% A Class $1,000 $838.90 $7.41 1.62% B Class $1,000 $835.70 $10.82 2.37% C Class $1,000 $835.40 $10.82 2.37% R Class $1,000 $837.70 $8.54 1.87% HYPOTHETICAL Investor Class $1,000 $1,018.05 $6.87 1.37% Institutional Class $1,000 $1,019.05 $5.87 1.17% A Class $1,000 $1,016.81 $8.12 1.62% B Class $1,000 $1,013.08 $11.86 2.37% C Class $1,000 $1,013.08 $11.86 2.37% R Class $1,000 $1,015.56 $9.37 1.87% * Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 18 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) New Heritage Opportunities II ASSETS Investment securities, at value (cost of $2,196,710,928 and $503,330,536, respectively) $2,805,772,725 $567,118,559 Cash 4,978,016 1,232,763 Receivable for investments sold 61,191,217 16,643,619 Receivable for forward foreign currency exchange contracts 84,309 -- Receivable for capital shares sold 301,949 134,271 Dividends and interest receivable 1,756,813 83,824 -------------- ---------------- 2,874,085,029 585,213,036 -------------- ---------------- LIABILITIES Payable for investments purchased 90,913,288 15,579,682 Payable for forward foreign currency exchange contracts 329,098 -- Payable for capital shares redeemed 118,668 149,257 Accrued management fees 2,190,694 597,879 Distribution fees payable 19,056 12,401 Service fees (and distribution fees - A Class and R Class) payable 87,418 40,085 -------------- ---------------- 93,658,222 16,379,304 -------------- ---------------- NET ASSETS $2,780,426,807 $568,833,732 ============== ================ See Notes to Financial Statements. - ------ 19 APRIL 30, 2008 (UNAUDITED) New Heritage Opportunities II NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $2,165,299,262 $740,239,790 Accumulated net investment loss (7,855,594) (1,749,559) Accumulated undistributed net realized gain (loss) on investment and foreign currency transactions 14,234,494 (233,444,512) Net unrealized appreciation on investments and translation of assets and liabilities in foreign currencies 608,748,645 63,788,013 -------------- --------------- $2,780,426,807 $568,833,732 ============== =============== INVESTOR CLASS, $0.01 PAR VALUE Net assets $2,146,568,507 $277,718,113 Shares outstanding 107,224,590 35,427,505 Net asset value per share $20.02 $7.84 INSTITUTIONAL CLASS, $0.01 PAR VALUE Net assets $184,071,668 $91,827,265 Shares outstanding 9,027,968 11,688,583 Net asset value per share $20.39 $7.86 A CLASS, $0.01 PAR VALUE Net assets $416,910,512 $178,491,709 Shares outstanding 21,303,216 22,918,197 Net asset value per share $19.57 $7.79 Maximum offering price (net asset value divided by 0.9425) $20.76 $8.27 B CLASS, $0.01 PAR VALUE Net assets $930,301 $3,844,635 Shares outstanding 46,735 502,065 Net asset value per share $19.91 $7.66 C CLASS, $0.01 PAR VALUE Net assets $31,754,068 $16,922,319 Shares outstanding 1,710,498 2,200,258 Net asset value per share $18.56 $7.69 R CLASS, $0.01 PAR VALUE Net assets $191,751 $29,691 Shares outstanding 9,606 3,798 Net asset value per share $19.96 $7.82 See Notes to Financial Statements. - ------ 20 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) New Heritage Opportunities II INVESTMENT INCOME (LOSS) INCOME: Dividends (net of foreign taxes withheld of $116,715 and $-, respectively) $5,578,119 $1,861,093 Interest 619,866 234,741 -------------- ---------------- 6,197,985 2,095,834 -------------- ---------------- EXPENSES: Management fees 13,617,803 3,510,577 Distribution fees: B Class 1,686 14,961 C Class 100,371 59,764 Service fees: B Class 562 4,987 C Class 33,457 19,921 Distribution and service fees: A Class 433,574 225,564 R Class 358 67 Directors' fees and expenses 35,280 8,403 Other expenses 5,165 1,149 -------------- ---------------- 14,228,256 3,845,393 -------------- ---------------- NET INVESTMENT INCOME (LOSS) (8,030,271) (1,749,559) -------------- ---------------- REALIZED AND UNREALIZED GAIN (LOSS) NET REALIZED GAIN (LOSS) ON: Investment transactions 36,734,919 (53,702,297) Foreign currency transactions (11,825,773) (10,996) -------------- ---------------- 24,909,146 (53,713,293) -------------- ---------------- CHANGE IN NET UNREALIZED APPRECIATION (DEPRECIATION) ON: Investments (274,941,723) (36,319,477) Translation of assets and liabilities in foreign currencies 211,939 2,294 -------------- ---------------- (274,729,784) (36,317,183) -------------- ---------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (249,820,638) (90,030,476) -------------- ---------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(257,850,909) $(91,780,035) ============== ================ See Notes to Financial Statements. - ------ 21 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008(UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Heritage New Opportunities II Increase (Decrease) in Net Assets 2008 2007 2008 2007 OPERATIONS Net investment income (loss) $ (8,030,271) $ (9,933,053) $ (1,749,559) $ (2,884,400) Net realized gain (loss) 24,909,146 146,268,289 (53,713,293) 27,531,246 Change in net unrealized appreciation (depreciation) (274,729,784) 661,025,727 (36,317,183) 75,883,152 -------------- -------------- ------------ ------------ Net increase (decrease) in net assets resulting from operations (257,850,909) 797,360,963 (91,780,035) 100,529,998 -------------- -------------- ------------ ------------ DISTRIBUTIONS TO SHAREHOLDERS From net realized gains: Investor Class (116,021,745) (69,993,372) (2,300,951) (4,743,191) Institutional Class (7,340,538) (3,848,774) (540,870) -- A Class (16,474,408) (4,359,065) (1,726,801) (6,550,114) B Class (12,405) -- (39,168) (271,092) C Class (1,359,296) (167,371) (150,324) (370,839) R Class (1,228) -- (229) -- -------------- -------------- ------------ ------------ Decrease in net assets from distributions (141,209,620) (78,368,582) (4,758,343) (11,935,236) -------------- -------------- ------------ ------------ CAPITAL SHARE TRANSACTIONS Net increase (decrease) in net assets from capital share transactions 231,674,882 1,074,154,725 120,303,303 323,948,017 -------------- -------------- ------------ ------------ NET INCREASE (DECREASE) IN NET ASSETS (167,385,647) 1,793,147,106 23,764,925 412,542,779 NET ASSETS Beginning of period 2,947,812,454 1,154,665,348 545,068,807 132,526,028 -------------- -------------- ------------ ------------ End of period $2,780,426,807 $2,947,812,454 $568,833,732 $545,068,807 ============== ============== ============ ============ Accumulated undistributed net investment income (loss) $(7,855,594) $174,677 $(1,749,559) -- ============== ============== ============ ============ See Notes to Financial Statements. - ------ 22 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. Heritage Fund (Heritage) and New Opportunities II Fund (New Opportunities II) (collectively, the funds) are two funds in a series issued by the corporation. The funds are diversified under the 1940 Act. The funds' investment objective is to seek long-term capital growth. Heritage pursues its objective by investing in companies that are medium-sized and smaller at the time of purchase that management believes will increase in value over time. New Opportunities II pursues its objective by investing in companies that are smaller-sized at the time of purchase that management believes will increase in value over time. The following is a summary of the funds' significant accounting policies. MULTIPLE CLASS -- The funds are authorized to issue the Investor Class, the Institutional Class, the A Class, the B Class, the C Class and the R Class. The A Class may incur an initial sales charge. The A Class, B Class and C Class may be subject to a contingent deferred sales charge. The share classes differ principally in their respective sales charges and distribution and shareholder servicing expenses and arrangements. All shares of each fund represent an equal pro rata interest in the net assets of the class to which such shares belong, and have identical voting, dividend, liquidation and other rights and the same terms and conditions, except for class specific expenses and exclusive rights to vote on matters affecting only individual classes. Income, non-class specific expenses, and realized and unrealized capital gains and losses of the funds are allocated to each class of shares based on their relative net assets. Sale of Heritage's B Class and R Class commenced on September 28, 2007. Sale of New Opportunities II's Institutional Class and R Class commenced on May 18, 2007 and September 28, 2007, respectively. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the funds determine that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the funds to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. Certain countries impose taxes on realized gains on the sale of securities registered in their country. The funds record the foreign tax expense, if any, on an accrual basis. The realized and unrealized tax provision reduces the net realized gain (loss) on investment transactions and net unrealized appreciation (depreciation) on investments, respectively. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Distributions received on securities that represent a return of capital or capital gain are recorded as a reduction of cost of investments and/or as a realized gain. The funds estimate the components of distributions received that may be considered nontaxable distributions or capital gain distributions for income tax purposes. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. - ------ 23 FOREIGN CURRENCY TRANSACTIONS -- All assets and liabilities initially expressed in foreign currencies are translated into U.S. dollars at prevailing exchange rates at period end. Purchases and sales of investment securities, dividend and interest income, and certain expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. For assets and liabilities, other than investments in securities, net realized and unrealized gains and losses from foreign currency translations arise from changes in currency exchange rates. Net realized and unrealized foreign currency exchange gains or losses occurring during the holding period of investment securities are a component of realized gain (loss) on investment transactions and unrealized appreciation (depreciation) on investments, respectively. Certain countries may impose taxes on the contract amount of purchases and sales of foreign currency contracts in their currency. The funds record the foreign tax expense, if any, as a reduction to the net realized gain (loss) on foreign currency transactions. FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS -- The funds may enter into forward foreign currency exchange contracts to facilitate transactions of securities denominated in a foreign currency or to hedge the funds' exposure to foreign currency exchange rate fluctuations. The net U.S. dollar value of foreign currency underlying all contractual commitments held by the funds and the resulting unrealized appreciation or depreciation are determined daily using prevailing exchange rates. The funds bear the risk of an unfavorable change in the foreign currency exchange rate underlying the forward contract. Additionally, losses may arise if the counterparties do not perform under the contract terms. REPURCHASE AGREEMENTS -- The funds may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. Each fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable each fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to each fund under each repurchase agreement. JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, each fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. INCOME TAX STATUS -- It is each fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The funds are no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. REDEMPTION -- New Opportunities II may impose a 2.00% redemption fee on shares held less than 180 days. The fee may not be applicable to all classes. The redemption fee is recorded as a reduction in the cost of shares redeemed. The redemption fee is retained by the fund and helps cover transaction costs that long-term investors may bear when a fund sells securities to meet investor redemptions. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the funds. In addition, in the normal course of business, the funds enter into contracts that provide general indemnifications. The funds' maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the funds. The risk of material loss from such claims is considered by management to be remote. - ------ 24 USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. 2. FEES AND TRANSACTIONS WITH RELATED PARTIES MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the funds with investment advisory and management services in exchange for a single, unified management fee (the fee) per class. The Agreement provides that all expenses of the funds, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of each specific class of shares of each fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula takes into account all of the investment advisor's assets under management in each fund's investment strategy (strategy assets) to calculate the appropriate fee rate for each fund. The strategy assets include each fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule for each class of Heritage is 1.00% for the Investor Class, A Class, B Class, C Class and R Class and 0.80% for the Institutional Class. The annual management fee schedule for New Opportunities II ranges from 1.10% to 1.50% for the Investor Class, A Class, B Class, C Class and R Class. The Institutional Class of New Opportunities II is 0.20% less at each point within the range. The effective annual management fee for each class of each fund for the six months ended April 30, 2008 was as follows: Investor, A, B, C, & R Institutional Heritage 1.00% 0.80% New Opportunities II 1.37% 1.17% DISTRIBUTION AND SERVICE FEES -- The Board of Directors has adopted a separate Master Distribution and Individual Shareholder Services Plan for each of the A Class, B Class, C Class and R Class (collectively the plans), pursuant to Rule 12b-1 of the 1940 Act. The plans provide that the A Class will pay American Century Investment Services, Inc. (ACIS) an annual distribution and service fee of 0.25%. The plans provide that the B Class and the C Class will each pay ACIS an annual distribution fee of 0.75% and service fee of 0.25%. The plans provide that the R Class will pay ACIS an annual distribution and service fee of 0.50%. The fees are computed and accrued daily based on each class's daily net assets and paid monthly in arrears. The distribution fee provides compensation for expenses incurred in connection with distributing shares of the classes including, but not limited to, payments to brokers, dealers, and financial institutions that have entered into sales agreements with respect to shares of the funds. The service fee provides compensation for individual shareholder services rendered by broker/dealers or other independent financial intermediaries. Fees incurred under the plans during the six months ended April 30, 2008, are detailed in the Statement of Operations. RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, ACIS, and the corporation's transfer agent, American Century Services, LLC. The funds are eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. Prior to December 12, 2007, the funds had a bank line of credit agreement with JPMorgan Chase Bank (JPMCB). JPMCB is a custodian of the funds and a wholly owned subsidiary of JPM. - ------ 25 3. INVESTMENT TRANSACTIONS Investment transactions, excluding short-term investments, for the six months ended April 30, 2008, were as follows: Heritage New Opportunities II Purchases $2,164,769,299 $500,725,496 Proceeds from sales $2,085,621,630 $369,781,128 4. CAPITAL SHARE TRANSACTIONS Transactions in shares of the funds were as follows: Six months ended Year ended April 30, 2008 October 31, 2007(1) Shares Amount Shares Amount Heritage INVESTOR CLASS/SHARES AUTHORIZED 400,000,000 400,000,000 ============= ============ Sold 18,511,196 $380,806,721 55,747,908 $1,085,083,773 Issued in reinvestment of distributions 5,127,806 109,324,825 4,258,562 67,285,282 Redeemed (24,955,723) (491,410,360) (18,034,415) (331,684,372) ------------ ------------- ------------ -------------- (1,316,721) (1,278,814) 41,972,055 820,684,683 ------------ ------------- ------------ -------------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 40,000,000 40,000,000 ============= ============ Sold 2,821,353 58,347,579 4,242,050 81,839,322 Issued in reinvestment of distributions 335,375 7,277,632 209,986 3,366,082 Redeemed (844,071) (16,667,270) (1,347,922) (25,109,011) ------------ ------------- ------------ -------------- 2,312,657 48,957,941 3,104,114 60,096,393 ------------ ------------- ------------ -------------- A CLASS/SHARES AUTHORIZED 100,000,000 100,000,000 ============= ============ Sold 11,396,578 227,687,126 11,013,744 210,428,398 Issued in reinvestment of distributions 779,666 16,263,842 280,594 4,352,011 Redeemed (3,910,150) (74,775,612) (2,042,060) (37,629,295) ------------ ------------- ------------ -------------- 8,266,094 169,175,356 9,252,278 177,151,114 ------------ ------------- ------------ -------------- B CLASS/SHARES AUTHORIZED 35,000,000 35,000,000 ============= ============ Sold 45,800 918,234 3,651 80,038 Issued in reinvestment of distributions 537 11,416 -- -- Redeemed (3,253) (64,736) -- -- ------------ ------------- ------------ -------------- 43,084 864,914 3,651 80,038 ------------ ------------- ------------ -------------- C CLASS/SHARES AUTHORIZED 35,000,000 35,000,000 ============= ============ Sold 941,421 18,102,176 920,436 17,272,099 Issued in reinvestment of distributions 60,851 1,207,291 10,254 152,781 Redeemed (307,578) (5,529,268) (72,875) (1,307,383) ------------ ------------- ------------ -------------- 694,694 13,780,199 857,815 16,117,497 ------------ ------------- ------------ -------------- R CLASS/SHARES AUTHORIZED 30,000,000 30,000,000 ============= ============ Sold 13,101 266,307 1,162 25,000 Issued in reinvestment of distributions 58 1,228 -- -- Redeemed (4,715) (92,249) -- -- ------------ ------------- ------------ -------------- 8,444 175,286 1,162 25,000 ------------ ------------- ------------ -------------- Net increase (decrease) 10,008,252 $231,674,882 55,191,075 $1,074,154,725 ============= ============= ============ ============== (1) September 28, 2007 (commencement of sale) through October 31, 2007 for the B Class and R Class. - ------ 26 Six months ended Year ended April 30, 2008 October 31, 2007(1) Shares Amount Shares Amount New Opportunities II INVESTOR CLASS/SHARES AUTHORIZED 165,000,000 165,000,000 =========== ============ Sold 5,108,828 $37,343,878 16,509,991 $136,035,975 Issued in connection with acquisition (Note 8) -- -- 11,629,055 90,241,770 Issued in reinvestment of distributions 192,298 1,651,841 485,199 3,454,628 Redeemed (2,058,586) (16,381,486)(2) (3,170,120) (26,089,511)(3) ----------- --------------- ------------ --------------- 3,242,540 22,614,233 25,454,125 203,642,862 ----------- --------------- ------------ --------------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 =========== ============ Sold 10,397,159 88,009,472 1,988,404 17,346,574 Issued in reinvestment of distributions 7,845 67,466 -- -- Redeemed (665,779) (5,269,549)(4) (39,046) (344,012)(5) ----------- --------------- ------------ --------------- 9,739,225 82,807,389 1,949,358 17,002,562 ----------- --------------- ------------ --------------- A CLASS/SHARES AUTHORIZED 100,000,000 100,000,000 =========== ============ Sold 4,151,572 33,664,020 3,296,265 29,060,351 Issued in connection with acquisition (Note 8) -- -- 13,909,669 107,660,863 Issued in reinvestment of distributions 193,819 1,655,219 908,837 6,452,744 Redeemed (3,037,181) (24,095,550)(6) (6,173,894) (49,631,241)(7) ----------- --------------- ------------ --------------- 1,308,210 11,223,689 11,940,877 93,542,717 ----------- --------------- ------------ --------------- B CLASS/SHARES AUTHORIZED 20,000,000 20,000,000 =========== ============ Sold 50,651 407,448 76,866 633,968 Issued in reinvestment of distributions 4,508 37,960 36,631 258,250 Redeemed (44,832) (340,483) (73,135) (565,516) ----------- --------------- ------------ --------------- 10,327 104,925 40,362 326,702 ----------- --------------- ------------ --------------- C CLASS/SHARES AUTHORIZED 20,000,000 20,000,000 =========== ============ Sold 651,927 5,250,099 629,498 5,317,298 Issued in connection with acquisition (Note 8) -- -- 903,113 6,962,989 Issued in reinvestment of distributions 13,136 111,133 35,779 253,319 Redeemed (230,836) (1,816,808) (390,349) (3,125,432) ----------- --------------- ------------ --------------- 434,227 3,544,424 1,178,041 9,408,174 ----------- --------------- ------------ --------------- R CLASS/SHARES AUTHORIZED 20,000,000 20,000,000 =========== ============ Sold 1,037 8,708 2,772 25,000 Issued in reinvestment of distributions 27 229 -- -- Redeemed (38) (294) -- -- ----------- --------------- ------------ --------------- 1,026 8,643 2,772 25,000 ----------- --------------- ------------ --------------- Net increase (decrease) 14,735,555 $120,303,303 40,565,535 $323,948,017 =========== =============== ============ =============== (1) May 18, 2007 and September 28, 2007 (commencement of sale) through October 31, 2007 for Institutional Class and R Class, respectively. (2) Net of redemption fees of $93,572. (3) Net of redemption fees of $26,104. (4) Net of redemption fees of $5,316. (5) Net of redemption fees of $5,237. (6) Net of redemption fees of $5,242. (7) Net of redemption fees of $7,198. - ------ 27 5. BANK LINE OF CREDIT Effective December 12, 2007, the funds, along with certain other funds managed by ACIM or ACGIM, have a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the funds, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The funds may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The funds did not borrow from the line during the six months ended April 30, 2008. 6. RISK FACTORS There are certain risks involved in investing in foreign securities. These risks include those resulting from future adverse political, social, and economic developments, fluctuations in currency exchange rates, the possible imposition of exchange controls, and other foreign laws or restrictions. Investing in emerging markets may accentuate these risks. New Opportunities II's performance may be affected by investments in initial public offerings (IPOs). The impact of IPOs on a fund's performance depends on the strength of the IPO market and the size of the fund. IPOs may have less impact on a fund's performance as its assets grow. New Opportunities II concentrates its investments in common stocks of small companies. Because of this, New Opportunities II may be subject to greater risk and market fluctuations than a fund investing in larger, more established companies. New Opportunities II's investment process may result in high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. 7. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: New Heritage Opportunities II Federal tax cost of investments $2,204,981,144 $506,918,510 =============== ================= Gross tax appreciation of investments $632,177,267 $72,630,957 Gross tax depreciation of investments (31,385,686) (12,430,908) --------------- ----------------- Net tax appreciation (depreciation) of investments $600,791,581 $60,200,049 =============== ================= The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. As of October 31, 2007, New Opportunities II had accumulated capital losses of $(178,872,880), which represent net capital loss carryovers that may be used to offset future realized capital gains for federal income tax purposes. The capital loss carryovers for New Opportunities II expire as follows: 2011 2012 2013 2014 $(13,145,846) $(19,655,453) $(42,248,002) $(103,823,579) - ------ 28 8. REORGANIZATION NOTE On August 30, 2006, the Board of Directors of Kopp Emerging Growth (Emerging Growth), one fund in a series issued by Kopp Funds, Inc., approved a plan of reorganization (the reorganization) pursuant to which New Opportunities II acquired all of the assets of Emerging Growth in exchange for shares of equal value of New Opportunities II and the assumption by New Opportunities II of all liabilities of Emerging Growth. The financial statements and performance history of New Opportunities II will be carried over in the post-reorganization. The reorganization was approved by shareholders of Emerging Growth on January 12, 2007. The reorganization was effective at the close of business on February 23, 2007. The acquisition was accomplished by a tax-free exchange of shares. On February 23, 2007, Emerging Growth exchanged its shares for shares of New Opportunities II as follows: Shares Shares Original Fund/Class Exchanged New Fund/Class Received Emerging Growth -- New Opportunities II -- Investor Class 8,812,902 Investor Class 11,629,055 Emerging Growth -- New Opportunities II -- A Class 10,913,968 A Class 13,909,669 Emerging Growth -- New Opportunities II -- C Class 743,919 C Class 903,113 The net assets of Emerging Growth and New Opportunities II immediately before the acquisition were $204,865,622 and $157,082,448, respectively. Emerging Growth's unrealized appreciation of $9,092,774 was combined with that of New Opportunities II. Immediately after the acquisition, the combined net assets were $361,948,070. New Opportunities II acquired capital loss carryovers of $(198,135,391) from Emerging Growth. 9. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 29 FINANCIAL HIGHLIGHTS Heritage Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $22.83 $15.58 $13.48 $10.76 $10.78 $9.11 ---------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) (0.06) (0.10) (0.03) (0.06) (0.05) (0.04) Net Realized and Unrealized Gain (Loss) (1.69) 8.42 2.22 2.78 0.03 1.71 ---------- ------- ------- ------- ------- ------- Total From Investment Operations (1.75) 8.32 2.19 2.72 (0.02) 1.67 ---------- ------- ------- ------- ------- ------- Distributions From Net Realized Gains (1.06) (1.07) (0.09) -- -- -- ---------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $20.02 $22.83 $15.58 $13.48 $10.76 $10.78 ========== ======= ======= ======= ======= ======= TOTAL RETURN(3) (7.96)% 56.41% 16.26% 25.16% (0.09)% 18.33% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.00%(4) 1.00% 1.00% 1.00% 1.00% 1.00% Ratio of Net Investment Income (Loss) to Average Net Assets (0.55)%(4) (0.56)% (0.22)% (0.46)% (0.44)% (0.39)% Portfolio Turnover Rate 76% 128% 230% 236% 264% 129% Net Assets, End of Period (in millions) $2,147 $2,478 $1,037 $801 $1,148 $1,227 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 30 Heritage Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $23.21 $15.80 $13.63 $10.87 $10.86 $9.17 ---------- -------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) (0.03) (0.07) --(3) (0.03) (0.03) (0.01) Net Realized and Unrealized Gain (Loss) (1.73) 8.55 2.26 2.79 0.04 1.70 ---------- -------- ------- ------- ------- ------- Total From Investment Operations (1.76) 8.48 2.26 2.76 0.01 1.69 ---------- -------- ------- ------- ------- ------- Distributions From Net Realized Gains (1.06) (1.07) (0.09) -- -- -- ---------- -------- ------- ------- ------- ------- Net Asset Value, End of Period $20.39 $23.21 $15.80 $13.63 $10.87 $10.86 ========= ======== ======= ======= ======== ======== TOTAL RETURN(4) (7.87)% 56.66% 16.59% 25.39% 0.09% 18.43% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.80%(5) 0.80% 0.80% 0.80% 0.80% 0.80% Ratio of Net Investment Income (Loss) to Average Net Assets (0.35)%(5) (0.36)% (0.02)% (0.26)% (0.24)% (0.19)% Portfolio Turnover Rate 76% 128% 230% 236% 264% 129% Net Assets, End of Period (in thousands) $184,072 $155,885 $57,039 $43,192 $58,259 $73,735 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Per-share amount was less than $0.005. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 31 Heritage A Class(1) For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(2) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $22.37 $15.32 $13.29 $10.64 $10.68 $9.05 ---------- -------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(3) (0.08) (0.15) (0.08) (0.09) (0.07) (0.06) Net Realized and Unrealized Gain (Loss) (1.66) 8.27 2.20 2.74 0.03 1.69 ---------- -------- ------- ------- ------- ------- Total From Investment Operations (1.74) 8.12 2.12 2.65 (0.04) 1.63 ---------- -------- ------- ------- ------- ------- Distributions From Net Realized Gains (1.06) (1.07) (0.09) -- -- -- ---------- -------- ------- ------- ------- ------- Net Asset Value, End of Period $19.57 $22.37 $15.32 $13.29 $10.64 $10.68 ========== ======== ======= ======= ======= ======= TOTAL RETURN(4) (8.08)% 56.05% 15.96% 24.91% (0.37)% 18.01% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.25%(5) 1.25% 1.25% 1.25% 1.25% 1.25% Ratio of Net Investment Income (Loss) to Average Net Assets (0.80)%(5) (0.81)% (0.47)% (0.71)% (0.69)% (0.64)% Portfolio Turnover Rate 76% 128% 230% 236% 264% 129% Net Assets, End of Period (in thousands) $416,911 $291,674 $57,995 $19,953 $15,623 $13,668 (1) Prior to September 4, 2007, the A Class was referred to as the Advisor Class. (2) Six months ended April 30, 2008 (unaudited). (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges.. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 32 Heritage B Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $22.82 $21.52 ---------- --------- Income From Investment Operations Net Investment Income (Loss)(3) (0.14) (0.03) Net Realized and Unrealized Gain (Loss) (1.71) 1.33 ---------- --------- Total From Investment Operations (1.85) 1.30 ---------- --------- Distributions From Net Realized Gains (1.06) -- ---------- --------- Net Asset Value, End of Period $19.91 $22.82 ========== ========= TOTAL RETURN(4) (8.46)% 6.04% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.00%(5) 2.00%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (1.55)%(5) (1.81)%(5) Portfolio Turnover Rate 76% 128%(6) Net Assets, End of Period (in thousands) $930 $83 (1) Six months ended April 30, 2008 (unaudited). (2) September 28, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 33 Heritage C Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $21.35 $14.77 $12.91 $10.41 $10.54 $8.99 ---------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) (0.15) (0.29) (0.18) (0.17) (0.15) (0.13) Net Realized and Unrealized Gain (Loss) (1.58) 7.94 2.13 2.67 0.02 1.68 ---------- ------- ------- ------- ------- ------- Total From Investment Operations (1.73) 7.65 1.95 2.50 (0.13) 1.55 ---------- ------- ------- ------- ------- ------- Distributions From Net Realized Gains (1.06) (1.07) (0.09) -- -- -- ---------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $18.56 $21.35 $14.77 $12.91 $10.41 $10.54 ========== ======= ======= ======= ======= ======= TOTAL RETURN(3) (8.44)% 54.88% 15.11% 24.02% (1.23)% 17.24% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.00%(4) 2.00% 2.00% 2.00% 2.00% 2.00% Ratio of Net Investment Income (Loss) to Average Net Assets (1.55)%(4) (1.56)% (1.22)% (1.46)% (1.44)% (1.39)% Portfolio Turnover Rate 76% 128% 230% 236% 264% 129% Net Assets, End of Period (in thousands) $31,754 $21,692 $2,334 $898 $889 $872 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 34 Heritage R Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $22.83 $21.52 --------- ---------- Income From Investment Operations Net Investment Income (Loss)(3) (0.10) (0.02) Net Realized and Unrealized Gain (Loss) (1.71) 1.33 --------- ---------- Total From Investment Operations (1.81) 1.31 --------- ---------- Distributions From Net Realized Gains (1.06) -- --------- ---------- Net Asset Value, End of Period $19.96 $22.83 ========= ========== TOTAL RETURN(4) (8.23)% 6.09% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.50%(5) 1.50%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (1.05)%(5) (1.22)%(5) Portfolio Turnover Rate 76% 128%(6) Net Assets, End of Period (in thousands) $192 $27 (1) Six months ended April 30, 2008 (unaudited). (2) September 28, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 35 New Opportunities II Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $9.42 $7.63 $6.75 $6.29 $5.75 $4.15 -------- -------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) (0.02) (0.05) (0.06) (0.06) (0.07) (0.05) Net Realized and Unrealized Gain (Loss) (1.48) 2.52 1.16 0.69 0.61 1.65 -------- -------- ------- ------- ------- ------- Total From Investment Operations (1.50) 2.47 1.10 0.63 0.54 1.60 -------- -------- ------- ------- ------- ------- Distributions From Net Realized Gains (0.08) (0.68) (0.22) (0.17) -- -- -------- -------- ------- ------- ------- ------- Net Asset Value, End of Period $7.84 $9.42 $7.63 $6.75 $6.29 $5.75 ======== ======== ======= ======= ======= ======= TOTAL RETURN(3) (16.02)% 35.22% 16.52% 10.14% 9.39% 38.55% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.37%(4) 1.41% 1.50% 1.50% 1.50% 1.50% Ratio of Net Investment Income (Loss) to Average Net Assets (0.57)%(4) (0.70)% (0.80)% (0.93)% (1.09)% (1.11)% Portfolio Turnover Rate 71% 204% 299% 269% 255% 236% Net Assets, End of Period (in thousands) $277,718 $303,189 $51,336 $43,157 $38,917 $32,512 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 36 New Opportunities II Institutional Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $9.43 $8.27 --------- ---------- Income From Investment Operations Net Investment Income (Loss)(3) (0.01) (0.03) Net Realized and Unrealized Gain (Loss) (1.48) 1.19 --------- ---------- Total From Investment Operations (1.49) 1.16 --------- ---------- Distributions From Net Realized Gains (0.08) -- --------- ---------- Net Asset Value, End of Period $7.86 $9.43 ========= ========== TOTAL RETURN(4) (15.90)% 14.03% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.17%(5) 1.21%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.37)%(5) (0.65)%(5) Portfolio Turnover Rate 71% 204%(6) Net Assets, End of Period (in thousands) $91,827 $18,384 (1) Six months ended April 30, 2008 (unaudited). (2) May 18, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 37 New Opportunities II A Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003(2) PER-SHARE DATA Net Asset Value, Beginning of Period $9.37 $7.59 $6.72 $6.26 $5.74 $4.15 --------- ------- ------ ------ ------ --------- Income From Investment Operations Net Investment Income (Loss)(3) (0.03) (0.07) (0.08) (0.08) (0.08) (0.05) Net Realized and Unrealized Gain (Loss) (1.47) 2.51 1.16 0.70 0.60 1.64 --------- ------- ------ ------ ------ --------- Total From Investment Operations (1.50) 2.44 1.08 0.62 0.52 1.59 --------- ------- ------ ------ ------ --------- Distributions From Net Realized Gains (0.08) (0.66) (0.21) (0.16) -- -- --------- ------- ------ ------ ------ --------- Net Asset Value, End of Period $7.79 $9.37 $7.59 $6.72 $6.26 $5.74 ========= ======== ====== ====== ====== ========= TOTAL RETURN(4) (16.11)% 34.91% 16.22% 9.91% 9.06% 38.31% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.62%(5) 1.66% 1.75% 1.75% 1.75% 1.75%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.82)%(5) (0.95)% (1.05)% (1.18)% (1.34)% (1.47)%(5) Portfolio Turnover Rate 71% 204% 299% 269% 255% 236%(6) Net Assets, End of Period (in thousands) $178,492 $202,515 $73,383 $47,937 $20,337 $891 (1) Six months ended April 30, 2008 (unaudited). (2) January 31, 2003 (commencement of sale) through October 31, 2003. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2003. See Notes to Financial Statements. - ------ 38 New Opportunities II B Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003(2) PER-SHARE DATA Net Asset Value, Beginning of Period $9.25 $7.49 $6.63 $6.18 $5.71 $4.15 ---------- ------- ------- ------- ------- --------- Income From Investment Operations Net Investment Income (Loss)(3) (0.06) (0.13) (0.14) (0.13) (0.13) (0.08) Net Realized and Unrealized Gain (Loss) (1.45) 2.49 1.15 0.69 0.60 1.64 ---------- ------- ------- ------- ------- --------- Total From Investment Operations (1.51) 2.36 1.01 0.56 0.47 1.56 ---------- ------- ------- ------- ------- --------- Distributions From Net Realized Gains (0.08) (0.60) (0.15) (0.11) -- -- ---------- ------- ------- ------- ------- --------- Net Asset Value, End of Period $7.66 $9.25 $7.49 $6.63 $6.18 $5.71 ========== ======= ======= ======= ======= ========= TOTAL RETURN(4) (16.43)% 33.84% 15.46% 9.03% 8.23% 37.59% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.37%(5) 2.41% 2.50% 2.50% 2.50% 2.50%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (1.57)%(5) (1.70)% (1.80)% (1.93)% (2.09)% (2.20)%(5) Portfolio Turnover Rate 71% 204% 299% 269% 255% 236%(6) Net Assets, End of Period (in thousands) $3,845 $4,549 $3,383 $2,367 $1,163 $215 (1) Six months ended April 30, 2008 (unaudited). (2) January 31, 2003 (commencement of sale) through October 31, 2003. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2003. See Notes to Financial Statements. - ------ 39 New Opportunities II C Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003(2) PER-SHARE DATA Net Asset Value, Beginning of Period $9.29 $7.52 $6.66 $6.20 $5.73 $4.15 --------- ------ ------ ------ ------ ----------- Income From Investment Operations Net Investment Income (Loss)(3) (0.06) (0.13) (0.14) (0.13) (0.13) (0.07) Net Realized and Unrealized Gain (Loss) (1.46) 2.50 1.15 0.70 0.60 1.65 --------- ------ ------ ------ ------ ----------- Total From Investment Operations (1.52) 2.37 1.01 0.57 0.47 1.58 --------- ------ ------ ------ ------ ----------- Distributions From Net Realized Gains (0.08) (0.60) (0.15) (0.11) -- -- --------- ------ ------ ------ ------ ----------- Net Asset Value, End of Period $7.69 $9.29 $7.52 $6.66 $6.20 $5.73 ========= ====== ====== ====== ====== ============ TOTAL RETURN(4) (16.46)% 34.02% 15.24% 9.16% 8.20% 38.07% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.37%(5) 2.41% 2.50% 2.50% 2.50% 2.22%(5)(6) Ratio of Net Investment Income (Loss) to Average Net Assets (1.57)%(5) (1.70)% (1.80)% (1.93)% (2.09)% (1.97)%(5)(6) Portfolio Turnover Rate 71% 204% 299% 269% 255% 236%(7) Net Assets, End of Period (in thousands) $16,922 $16,406 $4,424 $3,414 $1,294 $34 (1) Six months ended April 30, 2008 (unaudited). (2) January 31, 2003 (commencement of sale) through October 31, 2003. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) During a portion of the period ended October 31, 2003, the distributor agreed to voluntarily waive its distribution and service fees. Had fees not been waived the annualized ratio of operating expenses to average net assets and the annualized ratio of net investment income (loss) to average net assets would have been 2.50% and (2.25)%, respectively. (7) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2003. See Notes to Financial Statements. - ------ 40 New Opportunities II R Class For a Share Outstanding Throughout the Periods Indicated 2008(1) 2007(2) PER-SHARE DATA Net Asset Value, Beginning of Period $9.42 $9.02 --------- --------- Income From Investment Operations Net Investment Income (Loss)(3) (0.04) (0.01) Net Realized and Unrealized Gain (Loss) (1.48) 0.41 --------- --------- Total From Investment Operations (1.52) 0.40 --------- --------- Distributions From Net Realized Gains (0.08) -- --------- --------- Net Asset Value, End of Period $7.82 $9.42 ========= ========= TOTAL RETURN(4) (16.23)% 4.43% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.87%(5) 1.91%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (1.07)%(5) (1.61)%(5) Portfolio Turnover Rate 71% 204%(6) Net Assets, End of Period (in thousands) $30 $26 (1) Six months ended April 30, 2008 (unaudited). (2) September 28, 2007 (commencement of sale) through October 31, 2007. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2007. See Notes to Financial Statements. - ------ 41 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the funds' investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the funds. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The funds file their complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The funds' Forms N-Q are available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The funds also make their complete schedule of portfolio holdings for the most recent quarter of their fiscal year available on their website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 42 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 1000® GROWTH INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 1000® VALUE INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 2000® INDEX Is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® GROWTH INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 2000® VALUE INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® GROWTH INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL MIDCAP® VALUE INDEX measures the performance of those Russell Midcap Index companies with lower price-to-book ratios and lower forecasted growth values. - ------ 43 NOTES - ------ 44 [blank page] [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE. . . . . . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE . . . . . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 INVESTORS USING ADVISORS. . . . . . . . . . . . . . . . . . . . 1-800-378-9878 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES. . . . . . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF. . . . . . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri American Century Investments P.O. Box 419200 PRSRT STD Kansas City, MO 64141-6200 U.S. POSTAGE PAID AMERICAN CENTURY COMPANIES American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60507S
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS NEW OPPORTUNITIES FUND PRESIDENT'S LETTER JONATHAN THOMAS [photo of Jonathan Thomas] Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® New Opportunities Fund for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns . . . . . . . . . . . . . . . . . . . . . . 2 NEW OPPORTUNITIES Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries. . . . . . . . . . . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 6 Shareholder Fee Example . . . . . . . . . . . . . . . . . . . . . . . 7 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 9 FINANCIAL STATEMENTS Statement of Assets and Liabilities . . . . . . . . . . . . . . . . . 12 Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . 13 Statement of Changes in Net Assets. . . . . . . . . . . . . . . . . . 14 Notes to Financial Statements . . . . . . . . . . . . . . . . . . . . 15 Financial Highlights. . . . . . . . . . . . . . . . . . . . . . . . . 19 OTHER INFORMATION Additional Information. . . . . . . . . . . . . . . . . . . . . . . . 20 Index Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 21 The opinions expressed in the Market Perspective and the Portfolio Commentary reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of Chief Investment Officer] By Steve Lurito, Chief Investment Officer, U.S. Growth Equity VOLATILITY UP, STOCKS DOWN The six months ended April 30, 2008 saw stocks produce negative returns as market volatility surged in the wake of the subprime credit crisis. In terms of the economy, tighter credit and the slumping housing market hurt consumer spending and confidence, leading many economists to suggest we're already in recession. Meanwhile, mounting losses hurt the banks, brokers, and other big institutional players important for the functioning of the financial markets. Facing dual economic and financial crises, the Federal Reserve (the Fed) took a series of extraordinary steps, slashing interest rates and acting as a lender of last resort not only for banks, but also major brokers. That helped stocks rebound, with many analysts suggesting that the mid-March buy-out of investment bank Bear Stearns -- in a deal arranged by the Fed -- put a floor under the market. RETURNS BY SIZE, STYLE MIXED Performance by size and style was mixed (see the accompanying table), reflecting the volatile trading during the period, when corporate earnings estimates were revised down sharply. Looking at returns by sector, energy shares were the only segment to produce positive results during the six months. At the other end of the spectrum, credit-related losses took a big bite out of earnings for financials stocks, which performed worst. Consumer discretionary shares also lagged badly, as did information technology stocks, which suffered from poor pricing and demand trends for chips and some consumer-related tech goods. OPPORTUNITY AMID VOLATILITY Despite the uncertainty surrounding the economy, we think growth-oriented stocks can perform well relative to value as proven earnings growth becomes scarce during economic slowdowns. And while we don't see an end to market volatility anytime soon, we view this dynamic as a natural part of the investing cycle -- and one that presents us with opportunities to build positions in what we believe are high-quality companies trading at attractive prices. Indeed, investors should rest assured that we're finding no shortage of companies demonstrating sustained earnings growth and business improvement. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% *Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE New Opportunities Total Returns as of April 30, 2008 Average Annual Returns 6 Since Inception months(1) 1 year 5 years 10 years Inception Date NEW OPPORTUNITIES -16.08% -1.50% 12.91% 6.80% 7.72% 12/26/96 RUSSELL 2000 GROWTH INDEX(2) -14.14% -6.71% 13.32% 2.20% 4.12%(3) -- (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. - A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (3) Since 12/31/96, the date nearest the fund's inception for which data are available. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Historically, small company stocks have been more volatile than the stocks of larger, more established companies. The fund's investment process may result in high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. The fund's performance may be affected by investments in initial public offerings. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 3 New Opportunities Growth of $10,000 Over 10 Years $10,000 investment made April 30, 1998
One-Year Returns Over 10 Years Periods ended April 30 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 New Opportunities 5.15% 172.82% -46.30% -7.32% -26.32% 29.85% -3.73% 42.24% 4.88% -1.50% Russell 2000 Growth Index -3.77% 31.39% -24.85% -8.52% -23.50% 41.57% -0.55% 36.13% 4.53% -6.71% Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Historically, small company stocks have been more volatile than the stocks of larger, more established companies. The fund's investment process may result in high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. The fund's performance may be affected by investments in initial public offerings. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 4 PORTFOLIO COMMENTARY New Opportunities Portfolio Managers: Stafford Southwick and Matthew Ferretti PERFORMANCE SUMMARY New Opportunities returned -16.08%* for the six months ended April 30, 2008, trailing the -14.14% return of its benchmark, the Russell 2000 Growth Index. The fund's return reflected the underperformance of small-cap stocks in general, and small-cap growth issues in particular. Furthermore, our investment approach faced considerable headwinds -- investors shifted away from momentum stocks, market volatility increased sharply, and sector rotation accelerated as many of the best-performing sectors from 2007 fell out of favor in early 2008. Our investment style often lags in this kind of transitional environment, and the six-month period was no exception. Despite this recent underperformance, however, the fund's long-term returns remain robust (see pages 3-4 for historical performance information). TECHNOLOGY LAGGED Stock selection in the information technology sector was the main factor behind the fund's underperformance of its benchmark. Stock choices among electronic equipment manufacturers and software companies had the biggest negative impact. The most significant underperformer was Brightpoint, the leading distributor of wireless devices. The slowdown in consumer spending, both domestically and overseas, weighed on the stock. In addition, one of the company's largest customers, Motorola, struggled during the period as its market share deteriorated. Another technology stock hurt by weaker consumer spending was Synaptics, which makes touchpads for laptops, MP3 players, and other mobile devices. A loss of market share sent the stock sharply lower in early 2008, and we eliminated it from the portfolio. INDUSTRIALS DETRACTED The portfolio's industrial stocks also lagged their counterparts in the benchmark index. Some of the portfolio's biggest winners in 2007 were dry bulk carriers -- large ships that carry dry goods such as iron ore and coal across oceans. Strong demand for dry goods led to a shortage of ship capacity, causing day rates to rise sharply. However, day rates peaked in late 2007 and then dropped substantially amid a seasonal slowdown and annual contract negotiations between China and the leading dry goods exporters. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Darling International Inc. 2.0% 1.3% priceline.com Inc. 2.0% 1.9% Tupperware Brands Corp. 1.7% 1.1% Chimera Investment Corp. 1.7% -- CyberSource Corp. 1.7% -- ManTech International Corp. Cl A 1.7% 0.8% Syniverse Holdings, Inc. 1.5% 1.1% Sybase, Inc. 1.5% -- PerkinElmer, Inc. 1.5% 1.0% Perrigo Co. 1.5% -- *Total returns for periods less than one year are not annualized. - ------ 5 New Opportunities Fund holdings DryShips, Diana Shipping, and Eagle Bulk Shipping slumped during the period, and although we reduced our positions in each of these stocks, we continue to own them as day rates have begun to recover. CONSUMER AND ENERGY STOCKS ADDED VALUE On the positive side, the portfolio's consumer and energy stocks contributed favorably to performance relative to the Russell 2000 Growth Index. Among consumer stocks, the top contributor was Darling International, which renders animal by-products and recycles used cooking oil into useable oils and proteins for the agricultural industry. Darling's profit margins expanded as commodity prices surged. Household products maker Tupperware Brands and online travel agent priceline.com were also major contributors. Tupperware reported strong profit growth thanks to its substantial international business and expansion into emerging markets. Priceline.com enjoyed strong growth in its European hotel reservation unit and gained market share domestically by eliminating booking fees. Six of the top ten relative performance contributors came from the energy sector. The top contributors were companies with an emphasis on natural gas, whose price surged during the period. Winners included Cabot Oil & Gas, Forest Oil, and Encore Acquisition. IPOS CONTRIBUTED FAVORABLY We participated in 16 initial public offerings (IPOs) during the period, and overall they added value to portfolio performance. The best performers included energy exploration and production company Approach Resources and Chinese advertising services provider VisionChina Media. OUTLOOK After fearing the worst over the last six months, the stock market has started to price in better credit and economic conditions. Consequently, we have recently pursued investment opportunities in the technology, financials, and consumer discretionary sectors. As always, we continue to seek out companies with improving business fundamentals, accelerating earnings and revenue growth, and price momentum. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Oil, Gas & Consumable Fuels 6.8% 5.2% Commercial Banks 5.6% 0.9% Chemicals 5.3% 6.4% Internet Software & Services 4.6% 3.3% IT Services 4.4% 2.1% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 91.8% 88.3% Foreign Common Stocks(1) 7.2% 7.7% TOTAL COMMON STOCKS 99.0% 96.0% Temporary Cash Investments 0.5% 4.4% Other Assets and Liabilities 0.5% (0.4)% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. - ------ 6 SHAREHOLDER FEE EXAMPLE (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. - ------ 7 Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. Ending Beginning Account Expenses Paid Account Value During Period* Annualized Value 11/1/07 4/30/08 11/1/07 - 4/30/08 Expense Ratio* Actual $1,000 $839.20 $6.86 1.50% Hypothetical $1,000 $1,017.40 $7.52 1.50% *Expenses are equal to the fund's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 8 SCHEDULE OF INVESTMENTS New Opportunities APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 99.0% AEROSPACE & DEFENSE -- 3.9% 16,361 Alliant Techsystems Inc.(1) $ 1,795,783 37,404 Curtiss-Wright Corp. 1,776,316 53,132 Esterline Technologies Corp.(1) 2,957,327 76,724 Orbital Sciences Corp.(1) 2,064,643 ------------ 8,594,069 ------------ AUTO COMPONENTS -- 0.7% 98,256 Exide Technologies(1) 1,433,555 ------------ BEVERAGES -- 1.3% 47,128 Central European Distribution Corp.(1) 2,871,038 ------------ BIOTECHNOLOGY -- 3.5% 13,705 Alexion Pharmaceuticals Inc.(1) 964,558 29,419 BioMarin Pharmaceutical Inc.(1) 1,072,617 96,040 Cubist Pharmaceuticals Inc.(1) 1,859,333 57,347 Emergent Biosolutions Inc.(1) 539,635 40,247 Martek Biosciences Corp.(1) 1,419,109 5,040 Myriad Genetics Inc.(1) 209,362 7,294 Onyx Pharmaceuticals, Inc.(1) 256,457 21,224 OSI Pharmaceuticals Inc.(1) 735,412 6,595 United Therapeutics Corp.(1) 557,278 ------------ 7,613,761 ------------ CAPITAL MARKETS -- 1.9% 42,919 Investment Technology Group Inc.(1) 2,071,271 63,675 Waddell & Reed Financial, Inc. Cl A 2,156,035 ------------ 4,227,306 ------------ CHEMICALS -- 5.3% 44,202 Airgas Inc. 2,127,442 48,774 Calgon Carbon Corp.(1) 695,030 60,985 Koppers Holdings Inc. 2,954,113 17,231 OM Group, Inc.(1) 943,570 43,437 SGL Carbon AG ORD(1) 2,971,876 50,599 Terra Industries Inc.(1) 1,915,678 ------------ 11,607,709 ------------ COMMERCIAL BANKS -- 5.6% 118,247 BancorpSouth Inc. 2,841,476 23,168 First Financial Bankshares Inc. 1,042,328 95,749 FirstMerit Corp. 1,964,769 136,568 Fulton Financial Corp. 1,703,003 37,491 Hancock Holding Co. 1,547,254 Shares Value 30,440 Independent Bank Corp. $ 889,761 59,945 Oriental Financial Group 1,126,966 66,342 Sterling Bancorp 1,088,672 ------------ 12,204,229 ------------ COMMERCIAL SERVICES & SUPPLIES -- 2.9% 22,877 Copart, Inc.(1) 934,983 39,008 FTI Consulting, Inc.(1) 2,496,512 33,456 IHS Inc. Cl A(1) 2,209,769 46,624 Knoll Inc. 607,044 ------------ 6,248,308 ------------ CONSUMER FINANCE -- 0.8% 146,069 EZCORP, Inc. Cl A(1) 1,773,278 ------------ CONTAINERS & PACKAGING -- 0.7% 24,535 Greif, Inc. Cl A 1,584,961 ------------ DISTRIBUTORS -- 1.4% 42,754 DXP Enterprises Inc.(1) 1,764,458 54,300 LKQ Corp.(1) 1,181,568 ------------ 2,946,026 ------------ DIVERSIFIED CONSUMER SERVICES -- 1.2% 43,882 DeVry Inc. 2,501,274 ------------ ELECTRICAL EQUIPMENT -- 2.8% 41,945 American Superconductor Corp.(1) 1,060,370 97,141 EnerSys(1) 2,273,100 73,839 GrafTech International Ltd.(1) 1,450,936 32,307 Powell Industries, Inc.(1) 1,359,155 ------------ 6,143,561 ------------ ELECTRONIC EQUIPMENT & INSTRUMENTS -- 2.9% 112,785 Brightpoint Inc.(1) 1,033,111 97,300 Cognex Corp. 2,451,960 26,977 FARO Technologies, Inc.(1) 950,669 13,164 Itron Inc.(1) 1,225,305 39,631 Orbotech Ltd.(1) 695,524 ------------ 6,356,569 ------------ ENERGY EQUIPMENT & SERVICES -- 3.2% 19,661 Dril-Quip Inc.(1) 1,123,823 34,558 Exterran Holdings, Inc.(1) 2,308,129 34,329 Natural Gas Services Group Inc.(1) 854,792 255,954 Parker Drilling Co.(1) 2,052,751 9,539 W-H Energy Services Inc.(1) 737,269 ------------ 7,076,764 ------------ FOOD & STAPLES RETAILING -- 0.9% 45,540 Andersons Inc. (The) 2,069,793 ------------ - ------ 9 New Opportunities Shares Value FOOD PRODUCTS -- 2.5% 74,864 Cosan Ltd. Cl A(1) $ 992,697 289,561 Darling International Inc.(1) 4,421,596 ------------ 5,414,293 ------------ GAS UTILITIES -- 0.5% 22,859 Northwest Natural Gas Co. 1,025,683 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 2.9% 22,600 Kinetic Concepts Inc.(1) 896,316 75,997 Merit Medical Systems Inc.(1) 1,117,916 44,745 NuVasive, Inc.(1) 1,707,022 80,653 Zoll Medical Corp.(1) 2,692,197 ------------ 6,413,451 ------------ HEALTH CARE PROVIDERS & SERVICES -- 2.1% 33,984 Amsurg Corp.(1) 867,951 46,572 CardioNet, Inc.(1) 1,075,813 49,876 IPC The Hospitalist Co., Inc.(1) 1,170,590 51,709 Providence Service Corp. (The)(1) 1,455,092 ------------ 4,569,446 ------------ HOTELS, RESTAURANTS & LEISURE -- 1.4% 108,974 Burger King Holdings, Inc. 3,040,375 ------------ HOUSEHOLD DURABLES -- 1.7% 97,077 Tupperware Brands Corp. 3,824,834 ------------ INDUSTRIAL CONGLOMERATES -- 0.4% 12,352 Walter Industries Inc. 856,735 ------------ INSURANCE -- 0.6% 208,400 Amil Participacoes SA ORD 1,266,450 ------------ INTERNET & CATALOG RETAIL -- 2.0% 34,196 priceline.com Inc.(1) 4,364,777 ------------ INTERNET SOFTWARE & SERVICES -- 4.6% 439,631 Art Technology Group, Inc.(1) 1,573,879 218,084 AsiaInfo Holdings, Inc.(1) 2,654,082 7,217 Equinix Inc.(1) 652,561 85,862 Switch & Data Facilities Co. Inc.(1) 1,299,951 45,767 Vocus Inc.(1) 1,271,865 136,257 Websense Inc.(1) 2,650,199 ------------ 10,102,537 ------------ IT SERVICES -- 4.4% 46,070 CACI International Inc.(1) 2,309,028 202,534 CyberSource Corp.(1) 3,675,993 76,904 ManTech International Corp. Cl A(1) 3,673,704 ------------ 9,658,725 ------------ Shares Value LIFE SCIENCES TOOLS & SERVICES -- 3.7% 9,937 Illumina, Inc.(1) $ 773,993 49,477 Kendle International Inc.(1) 2,112,173 75,779 Parexel International Corp.(1) 1,924,787 122,988 PerkinElmer, Inc. 3,266,561 ------------ 8,077,514 ------------ MACHINERY -- 3.0% 14,947 Bucyrus International, Inc. 1,882,276 12,058 Key Technology, Inc.(1) 371,628 13,317 Middleby Corp. (The)(1) 835,642 16,429 Valmont Industries, Inc. 1,617,599 43,072 Westinghouse Air Brake Technologies Corp. 1,846,927 ------------ 6,554,072 ------------ MARINE -- 2.2% 57,710 Diana Shipping Inc. 1,752,076 39,111 Eagle Bulk Shipping Inc. 1,151,037 33,724 Kirby Corporation(1) 1,849,423 ------------ 4,752,536 ------------ MEDIA -- 2.1% 125,369 Valassis Communications Inc.(1) 1,780,239 76,173 VisionChina Media Inc. ADR(1) 1,123,552 96,041 World Wrestling Entertainment, Inc. Cl A 1,695,124 ------------ 4,598,915 ------------ METALS & MINING -- 0.6% 20,918 Compass Minerals International Inc. 1,317,834 ------------ OIL, GAS & CONSUMABLE FUELS -- 6.8% 12,436 Alpha Natural Resources, Inc.(1) 605,011 102,092 Approach Resources Inc.(1) 1,934,643 34,967 Cabot Oil & Gas Corp. 1,992,070 30,242 Concho Resources Inc.(1) 833,772 59,005 Encore Acquisition Co.(1) 2,692,398 50,069 Forest Oil Corp.(1) 2,950,566 17,000 Foundation Coal Holdings, Inc. 1,019,660 24,500 Quicksilver Resources Inc.(1) 1,016,505 141,052 TXCO Resources, Inc.(1) 1,802,645 ------------ 14,847,270 ------------ PERSONAL PRODUCTS -- 1.7% 62,221 American Oriental Bioengineering Inc.(1) 598,566 30,810 Herbalife Ltd. 1,348,862 57,519 Inter Parfums, Inc. 1,665,750 ------------ 3,613,178 ------------ - ------ 10 New Opportunities Shares Value PHARMACEUTICALS -- 1.5% 79,659 Perrigo Co. $ 3,265,222 ------------ REAL ESTATE INVESTMENT TRUSTS (REITS) -- 4.3% 41,101 American Campus Communities Inc. 1,254,814 121,828 Capstead Mortgage Corp. 1,571,581 266,135 Chimera Investment Corp. 3,691,292 37,173 Hatteras Financial Corp.(1) 939,733 152,981 U-Store-It Trust 1,846,481 ------------ 9,303,901 ------------ ROAD & RAIL -- 0.3% 21,772 J.B. Hunt Transport Services, Inc. 739,595 ------------ SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 2.4% 61,859 Amkor Technology Inc.(1) 590,753 130,169 Anadigics, Inc.(1) 1,452,686 126,268 Microsemi Corp.(1) 3,093,566 ------------ 5,137,005 ------------ SOFTWARE -- 3.3% 89,087 Lawson Software Inc.(1) 711,805 61,770 Magma Design Automation, Inc.(1) 576,314 42,438 MICROS Systems, Inc.(1) 1,512,915 100,827 NetScout Systems, Inc.(1) 1,008,270 112,904 Sybase, Inc.(1) 3,321,636 ------------ 7,130,940 ------------ SPECIALTY RETAIL -- 2.0% 56,964 Aeropostale Inc.(1) 1,810,886 76,578 Dress Barn Inc.(1) 1,030,740 45,823 hhgregg, Inc.(1) 470,602 140,329 Pier 1 Imports, Inc.(1) 1,094,566 ------------ 4,406,794 ------------ Shares Value TEXTILES, APPAREL & LUXURY GOODS -- 1.0% 7,580 Deckers Outdoor Corp.(1) $ 1,046,571 82,299 Maidenform Brands, Inc.(1) 1,226,255 ------------ 2,272,826 ------------ WATER UTILITIES -- 0.5% 94,564 Cascal N.V.(1) 1,146,116 ------------ WIRELESS TELECOMMUNICATION SERVICES -- 1.5% 215,391 Syniverse Holdings, Inc.(1) 3,383,793 ------------ TOTAL COMMON STOCKS (Cost $193,756,847) 216,337,018 ------------ Temporary Cash Investments -- 0.5% Repurchase Agreement, Bank of America Securities, LLC, (collateralized by various U.S. Treasury obligations, 0.625%, 4/15/13, valued at $1,224,748), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $1,200,064) (Cost $1,200,000) 1,200,000 ------------ TOTAL INVESTMENT SECURITIES -- 99.5% (Cost $194,956,847) 217,537,018 ------------ OTHER ASSETS AND LIABILITIES -- 0.5% 1,034,539 ------------ TOTAL NET ASSETS -- 100.0% $218,571,557 ============ Notes to Schedule of Investments ADR = American Depositary Receipt ORD = Foreign Ordinary Share (1) Non-income producing. See Notes to Financial Statements. - ------ 11 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) ASSETS Investment securities, at value (cost of $194,956,847) $217,537,018 Cash 100,095 Receivable for investments sold 6,737,331 Dividends and interest receivable 33,809 ------------- 224,408,253 ------------- LIABILITIES Payable for investments purchased 5,571,512 Accrued management fees 265,184 ------------- 5,836,696 ------------- NET ASSETS $218,571,557 ============= CAPITAL SHARES, $0.01 PAR VALUE Authorized 300,000,000 ============= Outstanding 30,340,538 ============= NET ASSET VALUE PER SHARE $7.20 ============= NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $277,562,373 Accumulated net investment loss (855,202) Accumulated net realized loss on investment and foreign currency transactions (80,715,781) Net unrealized appreciation on investments and translation of assets and liabilities in foreign currencies 22,580,167 ------------- $218,571,557 ============= See Notes to Financial Statements. - ------ 12 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) INVESTMENT INCOME (LOSS) INCOME: Dividends $ 793,788 Interest 71,289 ------------- 865,077 ------------- EXPENSES: Management fees 1,715,288 Directors' fees and expenses 2,647 Other expenses 2,344 ------------- 1,720,279 ------------- NET INVESTMENT INCOME (LOSS) (855,202) ------------- REALIZED AND UNREALIZED GAIN (LOSS) Net realized gain (loss) on investment and foreign currency transactions (14,211,030) Change in net unrealized appreciation (depreciation) on investments and translation of assets and liabilities in foreign currencies (27,924,205) ------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (42,135,235) ------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(42,990,437) ============= See Notes to Financial Statements. - ------ 13 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Increase (Decrease) in Net Assets 2008 2007 OPERATIONS Net investment income (loss) $ (855,202) $ (2,081,598) Net realized gain (loss) (14,211,030) 53,831,813 Change in net unrealized appreciation (depreciation) (27,924,205) 20,464,068 ------------- ------------- Net increase (decrease) in net assets resulting from operations (42,990,437) 72,214,283 ------------- ------------- CAPITAL SHARE TRANSACTIONS Proceeds from shares sold 7,663,607 15,958,764 Payments for shares redeemed(1) (16,530,105) (65,620,583) ------------- ------------- Net increase (decrease) in net assets from capital share transactions (8,866,498) (49,661,819) ------------- ------------- NET INCREASE (DECREASE) IN NET ASSETS (51,856,935) 22,552,464 NET ASSETS Beginning of period 270,428,492 247,876,028 ------------- ------------- End of period $218,571,557 $270,428,492 ============= ============= Accumulated net investment loss $(855,202) -- ============= ============= TRANSACTIONS IN SHARES OF THE FUND Sold 1,022,095 2,133,906 Redeemed (2,210,030) (9,110,565) ------------- ------------- Net increase (decrease) in shares of the fund (1,187,935) (6,976,659) ============= ============= (1) Net of redemption fees of $14,916 and $11,866, respectively. See Notes to Financial Statements. - ------ 14 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. New Opportunities Fund (the fund) is one fund in a series issued by the corporation. The fund is diversified under the 1940 Act. The fund's investment objective is to seek long-term capital growth. The fund pursues its objective by investing primarily in common stocks of smaller-sized companies that management believes will increase in value over time. The following is a summary of the fund's significant accounting policies. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Discount notes may be valued through a commercial pricing service or at amortized cost, which approximates fair value. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the fund determines that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the fund to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. FOREIGN CURRENCY TRANSACTIONS -- All assets and liabilities initially expressed in foreign currencies are translated into U.S. dollars at prevailing exchange rates at period end. Purchases and sales of investment securities, dividend and interest income, and certain expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. For assets and liabilities, other than investments in securities, net realized and unrealized gains and losses from foreign currency translations arise from changes in currency exchange rates. Net realized and unrealized foreign currency exchange gains or losses occurring during the holding period of investment securities are a component of realized gain (loss) on investment transactions and unrealized appreciation (depreciation) on investments, respectively. Certain countries may impose taxes on the contract amount of purchases and sales of foreign currency contracts in their currency. The fund records the foreign tax expense, if any, as a reduction to the net realized gain (loss) on foreign currency transactions. REPURCHASE AGREEMENTS -- The fund may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. The fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable the fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to the fund under each repurchase agreement. - ------ 15 JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, the fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. EXCHANGE TRADED FUNDS -- The fund may invest in exchange traded funds (ETFs). ETFs are a type of index fund bought and sold on a securities exchange. An ETF trades like common stock and represents a fixed portfolio of securities designed to track the performance and dividend yield of a particular domestic or foreign market index. A fund may purchase an ETF to temporarily gain exposure to a portion of the U.S. or a foreign market while awaiting purchase of underlying securities. The risks of owning an ETF generally reflect the risks of owning the underlying securities they are designed to track, although the lack of liquidity on an ETF could result in it being more volatile. Additionally, ETFs have management fees, which increase their cost. INCOME TAX STATUS -- It is the fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The fund is no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. REDEMPTION -- The fund may impose a 2.00% redemption fee on shares held less than 180 days. The redemption fee is recorded as a reduction in the cost of shares redeemed. The redemption fee is retained by the fund and helps cover transaction costs that long-term investors may bear when a fund sells securities to meet investor redemptions. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the fund. In addition, in the normal course of business, the fund enters into contracts that provide general indemnifications. The fund's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the fund. The risk of material loss from such claims is considered by management to be remote. USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. 2. FEES AND TRANSACTIONS WITH RELATED PARTIES MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the fund with investment advisory and management services in exchange for a single, unified management fee (the fee). The Agreement provides that all expenses of the fund, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of the fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula takes into account all of the investment advisor's assets under management in the fund's investment strategy (strategy assets) to calculate the appropriate fee rate for the fund. The strategy assets include the fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule for the fund ranges from 1.10% to 1.50%. The effective annual management fee for the fund for the six months ended April 30, 2008 was 1.50%. - ------ 16 RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, American Century Investment Services, Inc., and the corporation's transfer agent, American Century Services, LLC. The fund is eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. Prior to December 12, 2007, the fund had a bank line of credit agreement with JPMorgan Chase Bank (JPMCB). JPMCB is a custodian of the fund and a wholly owned subsidiary of JPM. 3. INVESTMENT TRANSACTIONS Purchases and sales of investment securities, excluding short-term investments, for the six months ended April 30, 2008, were $178,294,928 and $179,174,960, respectively. 4. BANK LINE OF CREDIT Effective December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, has a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The fund may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The fund did not borrow from the line during the six months ended April 30, 2008. 5. RISK FACTORS The fund concentrates its investments in common stocks of small companies. Because of this, the fund may be subject to greater risk and market fluctuations than a fund investing in larger, more established companies. The fund's investment process may result in high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. The fund's performance may be affected by investments in initial public offerings (IPOs). The impact of IPOs on a fund's performance depends on the strength of the IPO market and the size of the fund. IPOs may have less impact on a fund's performance as its assets grow. 6. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: Federal tax cost of investments $195,189,220 ============= Gross tax appreciation of investments $27,991,558 Gross tax depreciation of investments (5,643,760) ------------- Net tax appreciation (depreciation) of investments $22,347,798 ============= The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. As of October 31, 2007, the fund had accumulated capital losses of $(66,365), which represent net capital loss carryovers that may be used to offset future realized capital gains for federal income tax purposes. Capital loss carryovers of $(28,666) and $(37,699) expire in 2008 and 2009, respectively. - ------ 17 7. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 18 FINANCIAL HIGHLIGHTS New Opportunities For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $8.58 $6.44 $5.63 $5.06 $5.06 $4.01 -------- -------- -------- -------- -------- -------- Income From Investment Operations Net Investment Income (Loss) (0.03) (0.07) (0.06) (0.06) (0.06) (0.04) Net Realized and Unrealized Gain (Loss) (1.35) 2.21 0.87 0.63 0.06 1.09 -------- -------- -------- -------- -------- -------- Total From Investment Operations (1.38) 2.14 0.81 0.57 -- 1.05 -------- -------- -------- -------- -------- -------- Net Asset Value, End of Period $7.20 $8.58 $6.44 $5.63 $5.06 $5.06 ======== ======== ======== ======== ======== ======== TOTAL RETURN(2) (16.08)% 33.23% 14.39% 11.26% 0.00% 26.18% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.50%(3) 1.50% 1.50% 1.50% 1.49% 1.50% Ratio of Net Investment Income (Loss) to Average Net Assets (0.75)%(3) (0.83)% (0.84)% (0.98)% (1.04)% (0.98)% Portfolio Turnover Rate 79% 201% 298% 260% 269% 217% Net Assets, End of Period (in thousands) $218,572 $270,428 $247,876 $240,464 $273,555 $318,226 (1) For the six months ended April 30, 2008 (unaudited). (2) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. (3) Annualized See Notes to Financial Statements. - ------ 19 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the fund's investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the fund. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The fund's Form N-Q is available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The fund also makes its complete schedule of portfolio holdings for the most recent quarter of its fiscal year available on its website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 20 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 1000® GROWTH INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 1000® VALUE INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 2000® INDEX is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® GROWTH INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 2000® VALUE INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® GROWTH INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL MIDCAP® VALUE INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. - ------ 21 NOTES - ------ 22 NOTES - ------ 23 NOTES - ------ 24 [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE . . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE . . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS . . . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES . . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF . . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investments P.O. Box 419200 Kansas City, MO 64141-6200 PRSRT STD U.S. POSTAGE PAID AMERICAN CENTURY COMPANIES American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60501S
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS BALANCED FUND PRESIDENT'S LETTER JONATHAN THOMAS [photo of Jonathan Thomas] Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® Balanced Fund for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S Market Returns . . . . . . . . . . . . . . . . . . . . . . . . . 2 BALANCED Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Stock Holdings . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Stock Industries. . . . . . . . . . . . . . . . . . . . . . 5 Key Fixed-Income Portfolio Statistics. . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 6 Shareholder Fee Example . . . . . . . . . . . . . . . . . . . . . . . 7 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 9 FINANCIAL STATEMENTS Statement of Assets and Liabilities . . . . . . . . . . . . . . . . . 21 Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . 22 Statement of Changes in Net Assets. . . . . . . . . . . . . . . . . . 23 Notes to Financial Statements . . . . . . . . . . . . . . . . . . . . 24 Financial Highlights. . . . . . . . . . . . . . . . . . . . . . . . . 29 OTHER INFORMATION Additional Information. . . . . . . . . . . . . . . . . . . . . . . . 31 Index Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 32 The opinions expressed in the Market Perspective and the Portfolio Commentary reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of Chief Investment Officer] By John Schniedwind, Chief Investment Officer, Quantitative Equity ROUGH SAILING FOR STOCKS U.S. stocks fell for the six months ended April 30, 2008, as financial market volatility increased considerably. Losses from the meltdown in the subprime lending industry and liquidity crunch in the credit markets were more pervasive and substantial than originally anticipated. Tighter lending standards brought an end to the easy credit that fueled the merger and leveraged buy-out boom of the past few years, and the economy threatened to tip into recession amid sluggish job growth and weaker consumer spending. The Federal Reserve (the Fed) responded aggressively, cutting short-term interest rates five times during the six-month period and injecting liquidity into the financial system to provide some relief to the credit markets. But the Fed's game plan was complicated by persistently high energy and food prices, which led to concerns about rising inflation. Stocks fell steadily through mid-March, but then recovered somewhat over the last six weeks of the period as improving economic data and better-than-expected first-quarter earnings reports helped ease some of the market's economic and credit fears. BONDS ADVANCED In contrast to the stock market's swoon, the U.S. bond market enjoyed positive returns for the six-month period. Bonds continued to attract investor demand amid the worsening credit crunch and recession fears. The Fed's interest rate cuts -- lowering the federal funds rate from 4.5% to 2.0%, its lowest level since December 2004 -- also boosted the bond market. Short-term bonds benefited the most from the Fed's rate cuts. The two-year Treasury note yield fell from 3.95% to 2.29% for the six months, though it fell as low as 1.35% in mid-March. The decline in longer-term yields was more modest -- the 10-year Treasury bond yield slid from 4.47% to 3.77% -- reflecting the inflation concerns sparked by record-high energy and commodity prices. Increased demand for high-quality bonds contributed to the outperformance of Treasury and government agency bonds, as well as higher-quality mortgage-backed securities. The upheaval in the credit markets weighed on corporate bonds, which posted the weakest returns during the period. U.S. Market Returns For the six months ended April 30, 2008* STOCK INDICES Russell 1000 Index (large-cap) -9.54% Russell Midcap Index -8.77% Russell 2000 Index (small-cap) -12.92% CITIGROUP U.S. BOND MARKET INDICES Broad Investment-Grade (multi-sector) 4.43% Treasury 5.84% Agency 5.43% Mortgage (mortgage-backed) 4.66% Credit (investment-grade corporate) 2.20% *Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE Balanced Total Returns as of April 30, 2008 Average Annual Returns 6 10 Since Inception months(1) 1 year 5 years years Inception Date INVESTOR CLASS -3.64% -1.12% 8.20% 4.52% 8.62% 10/20/88 BLENDED INDEX(2) -4.08% 0.20% 8.28% 5.07% 9.80%(3) -- S&P 500 INDEX(4) -9.64% -4.68% 10.62% 3.89% 10.98%(3) -- CITIGROUP US BROAD INVESTMENT-GRADE BOND INDEX 4.43% 7.36% 4.53% 6.03% 7.45%(3) -- Institutional Class -3.48% -0.86% 8.41% -- 3.52% 5/1/00 (1) Total returns for periods less than one year are not annualized. (2) See Index Definitions page. (3) Since 10/31/88, the date nearest the Investor Class's inception for which data are available. (4) Data provided by Lipper Inc. - A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. As interest rates rise, bond values will decline. International investing involves special risks, such as political instability and currency fluctuations. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 3 Balanced Growth of $10,000 Over 10 Years $10,000 investment made April 30, 1998
One-Year Returns Over 10 Years Periods ended April 30 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Investor Class 10.05% 8.16% -4.25% -5.14% -2.95% 14.98% 7.23% 9.43% 11.20% -1.12% Blended index 16.04% 6.76% -3.14% -4.54% -3.83% 14.17% 6.07% 9.40% 12.11% 0.20% S&P 500 Index 21.82% 10.13% -12.97% -12.63% -13.31% 22.88% 6.34% 15.42% 15.24% -4.68% Citigroup US Broad Investment-Grade Bond Index 6.30% 1.17% 12.38% 7.85% 10.45% 1.88% 5.39% 0.78% 7.41% 7.36% Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. As interest rates rise, bond values will decline. International investing involves special risks, such as political instability and currency fluctuations. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 4 PORTFOLIO COMMENTARY Balanced Equity Portfolio Managers: Bill Martin and Tom Vaiana Fixed-Income Portfolio Managers: Dave MacEwen, Bob Gahagan, Jeff Houston, Hando Aguilar, Brian Howell, John Walsh, Dan Schiffman, Jim Platz, and Seth Plunkett PERFORMANCE SUMMARY Balanced returned -3.64%* for the six months ended April 30, 2008, compared with the -4.08% return of its benchmark (a blended index consisting of 60% S&P 500 Index and 40% Citigroup US Broad Investment-Grade [BIG] Bond Index). The negative returns for both the fund and its performance benchmark reflected a sharp decline in stocks and positive results for bonds. However, the fund held up better as both the equity and fixed-income portions of the portfolio outperformed their respective components in the benchmark. (It's worth noting that the fund's results reflected operating expenses, while the benchmark's return did not.) STOCK COMPONENT OUTPERFORMED Balanced's stock portfolio declined for the six-month period but outpaced the S&P 500 thanks to favorable stock selection in six of ten market sectors. The bulk of the outperformance came from the portfolio's financials and materials stocks. The top contributor in the financials sector was investment bank JPMorgan Chase, which was rewarded for buying competitor Bear Stearns when it was on the brink of bankruptcy. Chemicals stocks were responsible for the bulk of the outperformance in the materials sector, led by agricultural chemicals maker Mosaic, which produces fertilizer and its raw materials. Mosaic benefited from strong demand for agricultural products and rising commodity prices. The health care sector generated mixed results. Medical instruments maker Becton Dickinson performed well, reporting solid earnings as cost management efforts helped offset higher raw materials prices. However, health care services provider Humana was the portfolio's biggest individual detractor. The company lowered its earnings forecast for 2008, citing higher-than-expected costs in its Medicare prescription drug program. Holdings in the consumer and energy sectors detracted from relative performance. Among consumer stocks, satellite television provider DISH Network was the most significant detractor, falling as subscriber growth decreased sharply. In the energy Balanced's Top Ten Stock Holdings as of April 30, 2008 % of equity % of S&P 500 holdings Index Exxon Mobil Corp. 5.5% 4.1% International Business Machines Corp. 2.7% 1.4% Johnson & Johnson 2.6% 1.6% JPMorgan Chase & Co. 2.6% 1.3% ConocoPhillips 2.4% 1.1% Hewlett-Packard Co. 2.0% 1.0% General Electric Co. 1.8% 2.7% AT&T Inc. 1.8% 1.9% Microsoft Corp. 1.8% 1.9% McDonald's Corp. 1.7% 0.6% Balanced's Top Five Stock Industries as of April 30, 2008 % of equity % of S&P 500 holdings Index Oil, Gas & Consumable Fuels 11.9% 11.1% IT Services 5.9% 2.3% Pharmaceuticals 5.3% 5.9% Computers & Peripherals 4.5% 3.1% Specialty Retail 3.9% 1.6% *All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. - ------ 5 Balanced sector, the underperformance stemmed from underweight positions in energy production companies that focus on natural gas. FIXED-INCOME BOOSTED RESULTS The portfolio's bond component enjoyed positive performance for the six-month period, outperforming the Citigroup BIG Index. Several factors contributed to the bond component's outperformance of its benchmark. An overweight position in Treasury bonds and an underweight position in corporate bonds added value as Treasury securities outperformed corporate bonds by a considerable margin. We also avoided exposure to subprime-related securities. The bond portion was positioned to benefit from a steeper yield curve -- that is, when the gap between short- and long-term interest rates widens. This strategy paid off as the gap between the yields of the two-year and ten-year Treasury securities widened from about 50 basis points (0.50% -- a basis point equals 0.01%) to nearly 150 basis points during the six-month period. The portfolio held modest positions in municipal bonds and Treasury inflation-protected securities (TIPS), both of which contributed favorably to performance. Problems among municipal bond insurers caused municipal bond yields to rise substantially, providing a temporary window of opportunity. TIPS benefited from persistently high energy and commodity prices. More recently, we have pared back our overweight position in Treasury bonds after their strong performance over the past 12 months. Instead, we have looked for bargains among downtrodden segments of the market, adding selectively to our holdings of corporate and mortgage-backed securities. OUTLOOK The stock and bond markets are likely to face more volatility in the coming months. Although signs of modest economic improvement surfaced toward the end of the six-month period, it is a small step on the long road to a meaningful recovery. In addition, it is not clear whether we've seen the worst of the subprime fallout or an upper boundary on commodity prices, both of which represent further challenges for the economy, the credit markets, and the Federal Reserve. Our focus will remain on our disciplined investment approach, which will allow us to take advantage of investment opportunities that may arise in this uncertain market environment. Key Fixed-Income Portfolio Statistics As of As of 4/30/08 10/31/07 Weighted Average Maturity 4.2 years 4.5 years Average Duration (Effective) 4.7 years 5.0 years Types of Investments in Portfolio % of fund % of fund investments investments as of as of 4/30/08 10/31/07 Common Stocks 50.8% 52.8% Mortgage- & Asset-Backed Securities 21.5% 18.2% Corporate Bonds 8.2% 5.8% U.S. Treasury Securities 8.2% 9.0% Municipals Securities 1.8% 0.1% U.S. Government Agency Securities 0.2% 2.4% Sovereign Goernments & Agencies 0.1% 0.1% Temporary Cash Investments 2.7% 1.7% Temporary Cash Investments - Securities Lending Collateral 6.5% 9.9% - ------ 6 SHAREHOLDER FEE EXAMPLE (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 7 Beginning Ending Expenses Paid Annualized Account Account Value During Period* Expense Value 11/1/07 4/30/08 11/1/07 - 4/30/08 Ratio* ACTUAL Investor Class $1,000 $963.60 $4.39 0.90% Institutional Class $1,000 $965.20 $3.42 0.70% HYPOTHETICAL Investor Class $1,000 $1,020.39 $4.52 0.90% Institutional Class $1,000 $1,021.38 $3.52 0.70% *Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 8 SCHEDULE OF INVESTMENTS Balanced APRIL 30, 2008 (UNAUDITED) Shares/Principal Amount Value Common Stocks -- 56.5% AEROSPACE & DEFENSE -- 1.4% 62,391 Boeing Co. $ 5,293,686 25,913 Lockheed Martin Corp. 2,747,815 ------------ 8,041,501 ------------ AIR FREIGHT & LOGISTICS -- 0.6% 4,373 C.H. Robinson Worldwide Inc. 274,100 7,966 FedEx Corp. 763,700 30,771 United Parcel Service, Inc. Cl B 2,228,128 ------------ 3,265,928 ------------ AIRLINES(1) 20,776 Southwest Airlines Co. 275,074 ------------ AUTOMOBILES -- 0.1% 35,894 Ford Motor Co.(2)(3) 296,484 ------------ BEVERAGES -- 1.9% 90,364 Anheuser-Busch Companies, Inc. 4,445,908 26,077 Coca-Cola Co. (The) 1,535,153 120,277 Coca-Cola Enterprises Inc. 2,706,233 32,192 PepsiCo, Inc. 2,206,118 ------------ 10,893,412 ------------ BIOTECHNOLOGY -- 1.1% 100,506 Amgen Inc.(2) 4,208,186 26,711 Cephalon, Inc.(2) 1,667,034 7,673 Gilead Sciences, Inc.(2) 397,154 ------------ 6,272,374 ------------ BUILDING PRODUCTS -- 0.1% 9,824 Armstrong World Industries, Inc. 349,636 ------------ CAPITAL MARKETS -- 2.1% 8,532 Goldman Sachs Group, Inc. (The) 1,632,769 34,377 Knight Capital Group, Inc. Cl A(2) 643,194 95,025 Morgan Stanley 4,618,215 21,807 Northern Trust Corp. 1,616,117 53,389 State Street Corp. 3,851,482 ------------ 12,361,777 ------------ CHEMICALS -- 0.9% 8,248 Celanese Corp., Series A 369,098 5,494 CF Industries Holdings, Inc. 734,548 7,508 du Pont (E.I.) de Nemours & Co. 367,216 15,403 Monsanto Co. 1,756,250 11,304 Mosaic Co. (The)(2) 1,384,853 Shares/Principal Amount Value 20,343 Terra Industries Inc.(2) $ 770,186 ------------ 5,382,151 ------------ COMMERCIAL BANKS -- 1.0% 48,081 Royal Bank of Canada 2,299,714 117,401 Wells Fargo & Co. 3,492,680 ------------ 5,792,394 ------------ COMMERCIAL SERVICES & SUPPLIES -- 0.1% 2,633 Allied Waste Industries Inc.(2) 32,544 19,882 R.R. Donnelley & Sons Co. 609,185 3,636 Watson Wyatt Worldwide, Inc. Cl A 213,142 ------------ 854,871 ------------ COMMUNICATIONS EQUIPMENT -- 0.3% 46,504 Cisco Systems Inc.(2) 1,192,363 28,141 Corning Inc. 751,646 ------------ 1,944,009 ------------ COMPUTERS & PERIPHERALS -- 2.5% 24,665 Apple Inc.(2) 4,290,477 142,700 Hewlett-Packard Co. 6,614,145 7,568 Lexmark International, Inc. Cl A(2) 237,560 93,393 Seagate Technology 1,762,326 32,878 Sun Microsystems, Inc.(2) 514,869 45,357 Western Digital Corp.(2) 1,314,899 ------------ 14,734,276 ------------ CONSTRUCTION & ENGINEERING -- 0.3% 20,093 Chicago Bridge & Iron Company New York Shares 800,505 3,261 EMCOR Group Inc.(2) 81,721 7,170 Fluor Corp. 1,096,078 ------------ 1,978,304 ------------ CONSUMER FINANCE -- 1.5% 24,802 American Express Co. 1,190,992 68,127 Capital One Financial Corp. 3,610,731 213,360 Discover Financial Services 3,885,286 ------------ 8,687,009 ------------ CONTAINERS & PACKAGING -- 0.2% 10,956 Owens-Illinois Inc.(2) 604,223 24,795 Rock-Tenn Co. Cl A 841,295 ------------ 1,445,518 ------------ DIVERSIFIED FINANCIAL SERVICES -- 2.1% 92,324 Bank of America Corp. 3,465,843 15,132 Citigroup Inc. 382,386 177,230 JPMorgan Chase & Co. 8,445,009 ------------ 12,293,238 ------------ - ------ 9 Balanced Shares/Principal Amount Value DIVERSIFIED TELECOMMUNICATION SERVICES -- 1.4% 151,463 AT&T Inc. $ 5,863,132 2,748 CenturyTel Inc. 89,173 1,039 FairPoint Communications, Inc. 9,569 55,120 Verizon Communications Inc. 2,121,018 ------------ 8,082,892 ------------ ELECTRIC UTILITIES -- 1.2% 32,166 Duke Energy Corp. 588,959 7,879 Edison International 411,047 40,549 Entergy Corp. 4,657,459 4,188 Exelon Corp. 357,990 16,773 FPL Group, Inc. 1,111,882 ------------ 7,127,337 ------------ ELECTRICAL EQUIPMENT -- 0.2% 23,985 Emerson Electric Co. 1,253,456 ------------ ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.8% 32,962 Celestica Inc.(2) 308,854 112,723 Tyco Electronics Ltd. 4,216,967 ------------ 4,525,821 ------------ ENERGY EQUIPMENT & SERVICES -- 1.4% 22,250 FMC Technologies Inc.(2) 1,495,200 33,825 Halliburton Co. 1,552,906 46,638 National Oilwell Varco, Inc.(2) 3,192,372 18,268 Schlumberger Ltd. 1,836,847 901 Transocean Inc.(2) 132,861 ------------ 8,210,186 ------------ FOOD & STAPLES RETAILING -- 1.1% 32,604 Safeway Inc. 1,030,286 49,500 SYSCO Corp. 1,513,215 71,621 Wal-Mart Stores, Inc. 4,152,586 ------------ 6,696,087 ------------ FOOD PRODUCTS -- 0.6% 20,024 Flowers Foods Inc. 518,421 35,317 General Mills, Inc. 2,133,147 20,404 Hormel Foods Corp. 804,122 ------------ 3,455,690 ------------ GAS UTILITIES -- 0.2% 19,540 ONEOK, Inc. 940,265 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 1.5% 72,513 Baxter International Inc. 4,519,010 48,390 Becton, Dickinson & Co. 4,326,066 ------------ 8,845,076 ------------ HEALTH CARE PROVIDERS & SERVICES -- 0.4% 7,612 Express Scripts, Inc.(2) 532,992 63,093 Health Net Inc.(2) 1,847,994 ------------ 2,380,986 ------------ Shares/Principal Amount Value HEALTH CARE TECHNOLOGY -- 0.1% 22,802 IMS Health Inc. $ 564,350 ------------ HOTELS, RESTAURANTS & LEISURE -- 1.4% 7,865 Choice Hotels International Inc. 271,264 94,051 McDonald's Corp. 5,603,558 51,232 Yum! Brands, Inc. 2,084,118 ------------ 7,958,940 ------------ HOUSEHOLD DURABLES(1) 5,756 Tupperware Brands Corp. 226,786 ------------ HOUSEHOLD PRODUCTS -- 0.9% 12,415 Colgate-Palmolive Co. 877,741 64,588 Procter & Gamble Co. (The) 4,330,625 ------------ 5,208,366 ------------ INDEPENDENT POWER PRODUCERS & ENERGY TRADERS -- 0.7% 149,966 Reliant Energy, Inc.(2) 3,860,125 ------------ INDUSTRIAL CONGLOMERATES -- 1.9% 183,193 General Electric Co. 5,990,410 28,570 McDermott International, Inc.(2) 1,530,781 79,030 Tyco International Ltd. 3,697,814 ------------ 11,219,005 ------------ INSURANCE -- 1.9% 33,615 Ace, Ltd. 2,026,648 38,746 Arch Capital Group Ltd.(2) 2,737,404 24,033 Aspen Insurance Holdings Ltd. 624,618 33,723 Axis Capital Holdings Ltd. 1,143,547 32,723 MetLife, Inc. 1,991,195 18,393 Travelers Companies, Inc. (The) 927,007 68,504 Unum Group 1,589,978 ------------ 11,040,397 ------------ INTERNET & CATALOG RETAIL -- 0.2% 11,168 Amazon.com, Inc.(2) 878,140 ------------ INTERNET SOFTWARE & SERVICES -- 0.7% 34,550 eBay Inc.(2) 1,081,070 5,338 Google Inc. Cl A(2) 3,065,560 ------------ 4,146,630 ------------ IT SERVICES -- 3.3% 113,698 Accenture Ltd. Cl A 4,269,360 7,874 Computer Sciences Corp.(2) 343,228 12,962 Hewitt Associates Inc. Cl A(2) 531,442 74,364 International Business Machines Corp. 8,975,735 19,820 Metavante Technologies Inc.(2) 467,157 10,074 Visa Inc. Cl A(2) 840,675 169,486 Western Union Co. (The) 3,898,178 ------------ 19,325,775 ------------ - ------ 10 Balanced Shares/Principal Amount Value LEISURE EQUIPMENT & PRODUCTS -- 0.1% 11,216 Polaris Industries Inc.(3) $ 522,105 ------------ LIFE SCIENCES TOOLS & SERVICES -- 0.1% 4,760 Invitrogen Corp.(2) 445,393 ------------ MACHINERY -- 1.0% 44,521 Caterpillar Inc. 3,645,379 23,136 Deere & Co. 1,945,044 3,805 Flowserve Corp. 472,162 ------------ 6,062,585 ------------ MEDIA -- 0.9% 92,528 Comcast Corp. Cl A 1,901,450 9,787 DIRECTV Group, Inc. (The)(2) 241,152 62,161 DISH Network Corp. Cl A(2) 1,854,884 6,277 Omnicom Group Inc. 299,664 20,018 Viacom Inc. Cl B(2) 769,492 ------------ 5,066,642 ------------ METALS & MINING -- 0.6% 29,674 Freeport-McMoRan Copper & Gold, Inc. 3,375,417 1,480 Southern Copper Corp.(3) 169,845 ------------ 3,545,262 ------------ MULTI-UTILITIES(1) 1,233 Public Service Enterprise Group Inc. 54,141 ------------ MULTILINE RETAIL -- 0.2% 34,008 Big Lots, Inc.(2) 919,236 ------------ OFFICE ELECTRONICS -- 0.3% 143,908 Xerox Corp. 2,010,395 ------------ OIL, GAS & CONSUMABLE FUELS -- 6.7% 53,203 Chevron Corp. 5,115,468 91,935 ConocoPhillips 7,920,200 195,904 Exxon Mobil Corp. 18,232,786 37,532 Occidental Petroleum Corp. 3,123,038 28,135 Stone Energy Corp.(2) 1,714,547 16,583 Sunoco, Inc. 769,617 28,486 Valero Energy Corp. 1,391,541 18,782 W&T Offshore Inc. 768,184 ------------ 39,035,381 ------------ PHARMACEUTICALS -- 3.0% 77,529 Eli Lilly & Co. 3,732,246 22,611 Forest Laboratories, Inc.(2) 784,828 126,611 Johnson & Johnson 8,494,332 16,557 Merck & Co., Inc. 629,828 126,475 Pfizer Inc. 2,543,412 49,949 Schering-Plough Corp. 919,561 11,007 Sepracor Inc.(2) 237,201 ------------ 17,341,408 ------------ Shares/Principal Amount Value ROAD & RAIL -- 0.5% 7,965 Burlington Northern Santa Fe Corp. $ 816,811 11,758 CSX Corp. 740,166 10,452 Norfolk Southern Corp. 622,730 6,952 Union Pacific Corp. 1,009,361 ------------ 3,189,068 ------------ SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 1.8% 125,759 Amkor Technology Inc.(2) 1,200,998 59,376 Intel Corp. 1,321,710 82,214 National Semiconductor Corp. 1,676,343 82,673 NVIDIA Corp.(2) 1,698,930 128,607 Texas Instruments Inc. 3,750,181 ------------ 9,648,162 ------------ SOFTWARE -- 2.2% 55,228 Adobe Systems Inc.(2) 2,059,452 205,309 Microsoft Corp. 5,855,412 76,030 Oracle Corp.(2) 1,585,226 177,457 Symantec Corp.(2) 3,055,810 ------------ 12,555,900 ------------ SPECIALTY RETAIL -- 2.2% 34,277 AutoZone, Inc.(2) 4,138,948 35,591 Best Buy Co., Inc. 1,531,125 132,281 Gap, Inc. (The) 2,463,072 97,190 RadioShack Corp. 1,350,941 106,276 TJX Companies, Inc. (The) 3,424,213 ------------ 12,908,299 ------------ THRIFTS & MORTGAGE FINANCE -- 0.1% 82,475 Countrywide Financial Corp. 476,705 7,199 Fannie Mae 203,732 ------------ 680,437 ------------ TOBACCO -- 0.7% 38,345 Altria Group Inc. 766,900 38,345 Philip Morris International Inc.(2) 1,956,745 21,724 Universal Corp. 1,394,464 ------------ 4,118,109 ------------ TOTAL COMMON STOCKS (Cost $295,044,344) 328,916,789 ------------ U.S. Government Agency Mortgage-Backed Securities(4) -- 12.8% $ 98,917 FHLMC, 7.00%, 10/1/12(5) 103,829 2,122,936 FHLMC, 4.50%, 1/1/19(5) 2,109,647 129,475 FHLMC, 6.50%, 1/1/28 135,548 1,085,900 FHLMC, 5.50%, 12/1/33(5) 1,096,788 279,321 FHLMC, 6.50%, 7/1/47(5) 286,217 - ------ 11 Balanced Shares/Principal Amount Value $16,458,092 FNMA, 6.00%, settlement date 5/13/08(6) $16,825,832 5,390,000 FNMA, 6.50%, settlement date 5/13/08(6) 5,577,809 68,289 FNMA, 6.00%, 2/1/09 69,450 14,373 FNMA, 6.50%, 5/1/11 14,940 146,702 FNMA, 7.50%, 11/1/11 153,162 1,083 FNMA, 6.50%, 10/1/12 1,126 6,493 FNMA, 6.50%, 5/1/13 6,752 11,866 FNMA, 6.50%, 5/1/13 12,341 29,392 FNMA, 6.50%, 6/1/13 30,568 14,273 FNMA, 6.50%, 6/1/13 14,844 4,034 FNMA, 6.50%, 6/1/13 4,195 30,550 FNMA, 6.50%, 6/1/13 31,772 4,484 FNMA, 6.50%, 6/1/13 4,661 102,597 FNMA, 6.00%, 1/1/14 106,107 363,925 FNMA, 6.00%, 4/1/14(5) 376,374 853,556 FNMA, 4.50%, 5/1/19(5) 848,104 1,665,147 FNMA, 4.50%, 5/1/19(5) 1,654,512 3,231,977 FNMA, 5.00%, 9/1/20(5) 3,257,290 28,133 FNMA, 6.50%, 1/1/28 29,422 129,787 FNMA, 7.00%, 1/1/28 138,293 159,389 FNMA, 6.50%, 1/1/29(5) 166,594 191,595 FNMA, 7.50%, 7/1/29(5) 206,879 76,863 FNMA, 7.50%, 9/1/30 82,859 132,317 FNMA, 6.50%, 9/1/31 138,090 40,105 FNMA, 7.00%, 9/1/31 42,702 250,145 FNMA, 6.50%, 1/1/32(5) 260,826 475,100 FNMA, 7.00%, 6/1/32(5) 505,265 237,876 FNMA, 6.50%, 8/1/32(5) 248,033 1,524,915 FNMA, 5.50%, 6/1/33(5) 1,538,775 1,993,748 FNMA, 5.50%, 7/1/33(5) 2,011,869 1,625,285 FNMA, 5.50%, 8/1/33(5) 1,640,057 982,866 FNMA, 5.50%, 9/1/33(5) 991,799 5,004,967 FNMA, 5.00%, 11/1/33(5) 4,934,017 7,115,243 FNMA, 5.50%, 1/1/34(5) 7,179,913 4,834,369 FNMA, 4.50%, 9/1/35(5) 4,609,634 5,536,378 FNMA, 5.00%, 2/1/36(5) 5,449,246 2,481,029 FNMA, 5.50%, 4/1/36(5) 2,499,317 3,568,881 FNMA, 6.50%, 8/1/37(5) 3,665,173 135,905 FNMA, 6.50%, 6/1/47 139,303 480,300 FNMA, 6.50%, 8/1/47(5) 492,308 357,907 FNMA, 6.50%, 8/1/47(5) 366,855 784,992 FNMA, 6.50%, 9/1/47(5) 804,617 414,403 FNMA, 6.50%, 9/1/47(5) 424,763 58,363 FNMA, 6.50%, 9/1/47 59,822 563,608 FNMA, 6.50%, 9/1/47(5) 577,698 446,038 FNMA, 6.50%, 9/1/47(5) 457,189 Shares/Principal Amount Value $ 212,042 GNMA, 7.00%, 4/20/26(5) $ 227,399 112,231 GNMA, 7.50%, 8/15/26 120,929 34,795 GNMA, 7.00%, 2/15/28 37,307 76,661 GNMA, 7.50%, 2/15/28 82,550 57,964 GNMA, 7.00%, 12/15/28 62,150 15,885 GNMA, 8.00%, 12/15/29 17,401 248,330 GNMA, 7.00%, 5/15/31(5) 265,864 1,534,434 GNMA, 5.50%, 11/15/32(5) 1,560,316 ------------ TOTAL U.S. GOVERNMENT AGENCY MORTGAGE-BACKED SECURITIES (Cost $74,049,601) 74,757,102 ------------ Corporate Bonds -- 9.1% AEROSPACE & DEFENSE -- 0.3% 262,000 Honeywell International Inc., 5.30%, 3/15/17(5) 267,272 230,000 Honeywell International Inc., 5.30%, 3/1/18(5) 234,838 378,000 Lockheed Martin Corp., 6.15%, 9/1/36(5) 387,990 530,000 United Technologies Corp., 4.375%, 5/1/10(5) 536,540 454,000 United Technologies Corp., 6.05%, 6/1/36(5) 471,868 ------------ 1,898,508 ------------ AUTOMOBILES -- 0.1% 260,000 DaimlerChrysler N.A. Holding Corp., 5.875%, 3/15/11(5) 266,104 330,000 DaimlerChrysler N.A. Holding Corp., 6.50%, 11/15/13(5) 345,302 ------------ 611,406 ------------ BEVERAGES -- 0.4% 580,000 Coca-Cola Co. (The), 5.35%, 11/15/17(5) 603,028 460,000 Diageo Capital plc, 5.75%, 10/23/17(5) 470,287 280,000 PepsiCo, Inc., 4.65%, 2/15/13(5) 286,271 421,000 SABMiller plc, 4.25%, 8/15/08 (Acquired 1/6/04, Cost $427,829)(5)(7) 422,047 670,000 SABMiller plc, 6.20%, 7/1/11 (Acquired 6/27/06, Cost $669,524)(5)(7) 691,858 ------------ 2,473,491 ------------ CAPITAL MARKETS -- 0.3% 331,000 Merrill Lynch & Co., Inc., 4.25%, 2/8/10(5) 323,703 609,000 Merrill Lynch & Co., Inc., 4.79%, 8/4/10(5) 595,671 560,000 Merrill Lynch & Co., Inc., 6.875%, 4/25/18 565,985 ------------ 1,485,359 ------------ - ------ 12 Balanced Shares/Principal Amount Value CHEMICALS -- 0.1% $ 340,000 Air Products and Chemicals, Inc., 4.15%, 2/1/13(5) $ 334,884 240,000 Rohm and Haas Co., 5.60%, 3/15/13(5) 244,008 ------------ 578,892 ------------ COMMERCIAL BANKS -- 0.6% 320,000 Fifth Third Bancorp, 6.25%, 5/1/13 323,331 450,000 PNC Bank N.A., 4.875%, 9/21/17(5) 408,077 290,000 PNC Bank N.A., 6.00%, 12/7/17(5) 284,380 328,000 PNC Funding Corp., 5.125%, 12/14/10(5) 328,272 110,000 SunTrust Bank, 7.25%, 3/15/18 116,138 373,000 Wachovia Bank N.A., 4.80%, 11/1/14(5) 359,777 583,000 Wachovia Bank N.A., 4.875%, 2/1/15(5) 562,305 516,000 Wells Fargo & Co., 4.625%, 8/9/10(5) 524,105 350,000 Wells Fargo & Co., 4.375%, 1/31/13(5) 346,747 ------------ 3,253,132 ------------ COMMERCIAL SERVICES & SUPPLIES(1) 230,000 Pitney Bowes, Inc., 5.75%, 9/15/17(5) 232,552 ------------ COMPUTERS & PERIPHERALS -- 0.1% 560,000 Hewlett-Packard Co., 4.50%, 3/1/13(5) 565,410 ------------ CONSUMER FINANCE -- 0.1% 250,000 American Express Centurion Bank, 4.375%, 7/30/09(5) 250,187 300,000 American Express Centurion Bank, 5.55%, 10/17/12(5) 300,753 ------------ 550,940 ------------ DIVERSIFIED FINANCIAL SERVICES -- 1.0% 820,000 Bank of America Corp., 4.375%, 12/1/10(5) 826,392 550,000 Bank of America Corp., 4.90%, 5/1/13(5) 551,804 550,000 Bank of America Corp., 5.65%, 5/1/18(5) 551,447 420,000 Bank of America N.A., 5.30%, 3/15/17(5) 415,521 360,000 Bank of America N.A., 6.00%, 10/15/36(5) 357,313 330,000 Citigroup Inc., 5.50%, 4/11/13(5) 332,508 402,000 Citigroup Inc., 5.00%, 9/15/14(5) 383,849 Shares/Principal Amount Value $ 220,000 General Electric Capital Corp., 4.80%, 5/1/13 $ 221,200 340,000 General Electric Capital Corp., 6.125%, 2/22/11(5) 356,827 450,000 General Electric Capital Corp., 5.625%, 9/15/17(5) 459,648 220,000 John Deere Capital Corp., 4.50%, 4/3/13(5) 219,891 532,000 John Deere Capital Corp., 5.50%, 4/13/17(5) 539,396 320,000 Pearson Dollar Finance Two plc, 6.25%, 5/6/18 (Acquired 4/29/08, Cost $319,411)(7) 325,856 450,000 Pricoa Global Funding I, 5.40%, 10/18/12 (Acquired 10/11/07, Cost $449,105)(5)(7) 456,025 ------------ 5,997,677 ------------ DIVERSIFIED TELECOMMUNICATION SERVICES -- 0.7% 517,000 AT&T Corp., 7.30%, 11/15/11(5) 556,620 350,000 AT&T Inc., 6.80%, 5/15/36(5) 369,542 70,000 BellSouth Corp., 6.875%, 10/15/31 72,703 350,000 British Telecommunications plc, 5.95%, 1/15/18(5) 351,652 219,000 Embarq Corp., 7.08%, 6/1/16(5) 217,765 120,000 Qwest Corp., 7.875%, 9/1/11(5) 123,600 200,000 Qwest Corp., 7.50%, 10/1/14(5) 202,000 490,000 Telecom Italia Capital SA, 4.00%, 1/15/10(5) 481,692 280,000 Telefonica Emisiones SAU, 7.05%, 6/20/36(5) 307,297 304,000 Verizon Communications Inc., 5.55%, 2/15/16(5) 307,337 230,000 Verizon Communications Inc., 5.50%, 2/15/18(5) 231,292 220,000 Verizon Communications Inc., 6.10%, 4/15/18(5) 231,307 216,000 Verizon Communications Inc., 6.25%, 4/1/37(5) 217,428 350,000 Verizon Communications Inc., 6.40%, 2/15/38(5) 357,971 ------------ 4,028,206 ------------ ELECTRIC UTILITIES -- 0.3% 420,000 Carolina Power & Light Co., 5.15%, 4/1/15(5) 424,256 401,000 Cleveland Electric Illuminating Co. (The), 5.70%, 4/1/17(5) 385,450 266,000 Florida Power Corp., 4.50%, 6/1/10(5) 270,185 230,000 Florida Power Corp., 6.35%, 9/15/37(5) 243,672 345,000 Southern California Edison Co., 5.625%, 2/1/36(5) 334,376 - ------ 13 Balanced Shares/Principal Amount Value $ 190,000 Toledo Edison Co. (The), 6.15%, 5/15/37 $170,269 ------------ 1,828,208 ------------ ELECTRICAL EQUIPMENT -- 0.1% 320,000 Rockwell Automation, Inc., 6.25%, 12/1/37(5) 319,767 ------------ FOOD & STAPLES RETAILING -- 0.4% 330,000 CVS Caremark Corp., 5.75%, 6/1/17(5) 335,226 460,000 SYSCO Corp., 4.20%, 2/12/13(5) 456,933 449,000 Wal-Mart Stores, Inc., 4.125%, 7/1/10(5) 454,620 220,000 Wal-Mart Stores, Inc., 4.25%, 4/15/13(5) 221,234 468,000 Wal-Mart Stores, Inc., 5.875%, 4/5/27(5) 471,743 330,000 Wal-Mart Stores, Inc., 6.50%, 8/15/37(5) 351,876 220,000 Wal-Mart Stores, Inc., 6.20%, 4/15/38(5) 224,991 ------------ 2,516,623 ------------ FOOD PRODUCTS -- 0.4% 690,000 Cadbury Schweppes U.S. Finance LLC, 3.875%, 10/1/08 (Acquired 6/14/05-10/17/06, Cost $676,184)(5)(7) 688,576 350,000 Cargill Inc., 5.20%, 1/22/13 (Acquired 1/16/08, Cost $349,710)(5)(7) 349,899 170,000 General Mills, Inc., 5.65%, 9/10/12 175,228 220,000 Kellogg Co., 6.60%, 4/1/11(5) 233,339 320,000 Kellogg Co., 5.125%, 12/3/12(5) 326,786 330,000 Kraft Foods Inc., 6.00%, 2/11/13(5) 340,918 ------------ 2,114,746 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 0.3% 710,000 Baxter Finco BV, 4.75%, 10/15/10(5) 722,549 500,000 Baxter International Inc., 5.90%, 9/1/16(5) 524,219 230,000 Baxter International Inc., 6.25%, 12/1/37(5) 236,126 ------------ 1,482,894 ------------ HOTELS, RESTAURANTS & LEISURE -- 0.3% 560,000 McDonald's Corp., 5.35%, 3/1/18(5) 569,583 230,000 McDonald's Corp., 6.30%, 10/15/37(5) 236,405 540,000 Royal Caribbean Cruises Ltd., 7.00%, 6/15/13(5) 514,350 Shares/Principal Amount Value $ 230,000 Yum! Brands, Inc., 6.875%, 11/15/37(5) $226,281 ------------ 1,546,619 ------------ HOUSEHOLD PRODUCTS -- 0.1% 230,000 Kimberly-Clark Corp., 6.125%, 8/1/17(5) 246,738 320,000 Procter & Gamble Co. (The), 5.55%, 3/5/37(5) 318,832 ------------ 565,570 ------------ INDUSTRIAL CONGLOMERATES -- 0.2% 1,208,000 General Electric Co., 5.00%, 2/1/13(5) 1,234,108 230,000 General Electric Co., 5.25%, 12/6/17(5) 229,491 ------------ 1,463,599 ------------ INSURANCE -- 0.5% 560,000 Allstate Financial Global Funding, 4.25%, 9/10/08 (Acquired 9/3/03,Cost $558,902)(5)(7) 561,411 423,000 Hartford Financial Services Group Inc. (The), 5.375%, 3/15/17(5) 413,658 230,000 Hartford Financial Services Group Inc. (The), 6.30%, 3/15/18(5) 238,609 460,000 Lincoln National Corp., 6.30%, 10/9/37(5) 439,576 750,000 MetLife Global Funding I, 5.125%, 4/10/13 (Acquired 4/7/08-4/8/08, Cost $750,669)(5)(7) 751,086 320,000 Prudential Financial, Inc., 6.00%, 12/1/17(5) 323,457 270,000 Prudential Financial, Inc., 5.40%, 6/13/35(5) 228,290 230,000 Travelers Companies, Inc. (The), 6.25%, 6/15/37(5) 226,196 ------------ 3,182,283 ------------ MACHINERY -- 0.1% 230,000 Atlas Copco AB, 5.60%, 5/22/17 (Acquired 5/15/07, Cost $229,897)(5)(7) 231,224 230,000 Caterpillar Financial Services Corp., 4.85%, 12/7/12(5) 233,285 ------------ 464,509 ------------ MEDIA -- 0.4% 489,000 Comcast Corp., 5.90%, 3/15/16(5) 495,891 271,000 News America Holdings, 7.75%, 1/20/24(5) 291,549 680,000 Rogers Cable Inc., 6.25%, 6/15/13(5) 692,805 - ------ 14 Balanced Shares/Principal Amount Value $ 650,000 Time Warner Cable Inc., 5.40%, 7/2/12(5) $ 654,589 195,000 Time Warner Inc., 5.50%, 11/15/11(5) 193,416 70,000 Time Warner Inc., 7.625%, 4/15/31 75,376 ------------ 2,403,626 ------------ METALS & MINING(1) 197,000 Xstrata Finance Canada Ltd., 5.80%, 11/15/16 (Acquired 11/8/06, Cost $196,513)(5)(7) 189,394 ------------ MULTI-UTILITIES -- 0.4% 230,000 CenterPoint Energy Resources Corp., 6.125%, 11/1/17(5) 232,154 330,000 CenterPoint Energy Resources Corp., 6.25%, 2/1/37(5) 306,390 454,000 Consolidated Edison Co. of New York, Inc., Series 2006 C, 5.50%, 9/15/16(5) 456,261 258,000 Dominion Resources Inc., 4.75%, 12/15/10(5) 261,126 460,000 NSTAR Electric Co., 5.625%, 11/15/17(5) 473,699 270,000 Pacific Gas and Electric Co., 6.05%, 3/1/34(5) 269,622 163,000 Pacific Gas and Electric Co., 5.80%, 3/1/37 157,242 220,000 Pacific Gas and Electric Co., 6.35%, 2/15/38(5) 228,723 ------------ 2,385,217 ------------ MULTILINE RETAIL -- 0.2% 175,000 Federated Retail Holdings, Inc., 5.35%, 3/15/12 163,252 240,000 Kohl's Corp., 6.875%, 12/15/37(5) 220,746 600,000 Macy's Retail Holdings, Inc., 5.875%, 1/15/13(5) 567,930 ------------ 951,928 ------------ OIL, GAS & CONSUMABLE FUELS -- 0.6% 260,000 Canadian Natural Resources Ltd., 5.70%, 5/15/17(5) 261,379 230,000 Canadian Natural Resources Ltd., 6.75%, 2/1/39(5) 241,053 450,000 Enbridge Energy Partners, L.P., 6.50%, 4/15/18 (Acquired 3/31/08, Cost $447,597)(5)(7) 456,753 785,000 Enterprise Products Operating L.P., 4.95%, 6/1/10(5) 788,701 260,000 Enterprise Products Operating L.P., 6.30%, 9/15/17(5) 265,594 340,000 Nexen Inc., 6.40%, 5/15/37(5) 333,836 613,000 Premcor Refining Group Inc. (The), 6.125%, 5/1/11(5) 633,375 Shares/Principal Amount Value $ 270,000 Tesoro Corp., 6.25%, 11/1/12(3)(5) $ 259,200 200,000 Tesoro Corp., 6.50%, 6/1/17(5) 184,500 120,000 TransCanada PipeLines Ltd., 6.20%, 10/15/37 115,755 342,000 XTO Energy Inc., 5.30%, 6/30/15(5) 343,268 272,000 XTO Energy Inc., 6.10%, 4/1/36(5) 265,049 110,000 XTO Energy Inc., 6.375%, 6/15/38(5) 111,487 ------------ 4,259,950 ------------ PHARMACEUTICALS -- 0.5% 450,000 Abbott Laboratories, 5.875%, 5/15/16(5) 475,309 230,000 Abbott Laboratories, 6.15%, 11/30/37(5) 240,134 1,020,000 AstraZeneca plc, 5.40%, 9/15/12(5) 1,058,092 360,000 AstraZeneca plc, 5.90%, 9/15/17(5) 382,191 532,000 Wyeth, 5.95%, 4/1/37(5) 529,419 ------------ 2,685,145 ------------ REAL ESTATE INVESTMENT TRUSTS (REITS) -- 0.1% 490,000 ProLogis, 5.625%, 11/15/16(5) 457,080 ------------ ROAD & RAIL -- 0.1% 340,000 Union Pacific Corp., 5.75%, 11/15/17(5) 345,098 ------------ SOFTWARE -- 0.3% 254,000 Intuit Inc., 5.75%, 3/15/17(5) 246,695 545,000 Oracle Corp., 5.00%, 1/15/11(5) 557,923 1,110,000 Oracle Corp., 5.75%, 4/15/18(5) 1,133,102 ------------ 1,937,720 ------------ SPECIALTY RETAIL(1) 230,000 Lowe's Companies, Inc., 5.60%, 9/15/12(5) 237,628 ------------ WIRELESS TELECOMMUNICATION SERVICES -- 0.1% 313,000 Vodafone Group plc, 5.625%, 2/27/17(5) 315,154 ------------ TOTAL CORPORATE BONDS (Cost $53,005,808) 53,328,331 ------------ U.S. Treasury Securities -- 9.1% 1,640,000 U.S. Treasury Bonds, 8.125%, 8/15/19(5) 2,234,244 1,165,000 U.S. Treasury Bonds, 8.125%, 8/15/21(3)(5) 1,616,984 4,000,000 U.S. Treasury Bonds, 7.125%, 2/15/23(3)(5) 5,195,940 310,000 U.S. Treasury Bonds, 6.25%, 5/15/30(3)(5) 386,289 - ------ 15 Balanced Shares/Principal Amount Value $ 929,000 U.S. Treasury Bonds, 4.75%, 2/15/37(3)(5) $ 969,571 8,134,633 U.S. Treasury Inflation Indexed Bonds, 2.375%, 1/15/27(5) 8,580,134 2,642,971 U.S. Treasury Inflation Indexed Notes, 3.00%, 7/15/12(5) 2,900,663 5,842,407 U.S. Treasury Inflation Indexed Notes, 2.00%, 1/15/14(5) 6,169,675 1,010,390 U.S. Treasury Inflation Indexed Notes, 1.625%, 1/15/18(5) 1,025,073 5,500,000 U.S. Treasury Notes, 4.625%, 10/31/11(3)(5) 5,866,526 7,000,000 U.S. Treasury Notes, 4.125%, 8/31/12(3)(5) 7,337,974 9,750,000 U.S. Treasury Notes, 3.125%, 4/30/13(3)(5) 9,794,948 1,005,000 U.S. Treasury Notes, 3.50%, 2/15/18(3)(5) 984,901 ------------ TOTAL U.S. TREASURY SECURITIES (Cost $51,801,091) 53,062,922 ------------ Collateralized Mortgage Obligations(4) -- 8.9% 2,287,999 Banc of America Alternative Loan Trust, Series 2007-2, Class 2A4, 5.75%, 6/25/37(5) 2,152,763 11,431,226 Banc of America Commercial Mortgage Inc. STRIPS - COUPON, Series 2004-1, Class XP, VRN, 0.64%, 5/1/08 173,652 2,169,000 Banc of America Commercial Mortgage Inc., Series 2004-2, Class A3 SEQ, 4.05%, 11/10/38(5) 2,136,007 900,000 Banc of America Commercial Mortgage Inc., Series 2006-6, Class A3 SEQ, 5.37%, 12/10/16(5) 866,788 2,330,000 Banc of America Commercial Mortgage Inc., Series 2007-4, Class A3 SEQ, 5.81%, 8/10/14(5) 2,270,415 16,394,428 Bear Stearns Commercial Mortgage Securities Trust STRIPS - COUPON, Series 2004 T16, Class X2, VRN, 0.75%, 5/1/08 379,679 1,344,952 Bear Stearns Commercial Mortgage Securities Trust, Series 2006 BBA7, Class A1, VRN, 2.83%, 5/15/08, resets monthly off the 1-month LIBOR plus 0.11% with no caps (Acquired 6/5/06, Cost $1,344,952)(5)(7) 1,281,918 2,900,000 Bear Stearns Commercial Mortgage Securities Trust, Series 2006 PW14, Class A4 SEQ, 5.20%, 12/1/38(5) 2,800,617 Shares/Principal Amount Value $ 75,055 Commercial Mortgage Pass-Through Certificates, Series 2005 F10A, Class A1, VRN, 2.82%, 5/15/08, resets monthly off the 1-month LIBOR plus 0.10% with no caps (Acquired 3/18/05, Cost $75,055)(7) $72,885 4,713,344 Countrywide Home Loan Mortgage Pass-Through Trust, Series 2007-16, Class A1, 6.50%, 10/25/37(5) 4,554,222 500,000 Credit Suisse First Boston Mortgage Securities Corp., Series 2000 C1, Class B, VRN, 7.57%, 5/11/08(5) 528,760 800,000 Credit Suisse First Boston Mortgage Securities Corp., Series 2001 CK3, Class A4 SEQ, 6.53%, 6/15/34(5) 830,711 1,000,000 Credit Suisse First Boston Mortgage Securities Corp., Series 2002 CKN2, Class A3 SEQ, 6.13%, 4/15/37(5) 1,038,442 5,000,000 Credit Suisse First Boston Mortgage Securities Corp., Series 2002 CKP1, Class B, 6.57%, 12/15/35(5) 5,231,430 1,434,064 Credit Suisse First Boston Mortgage Securities Corp., Series 2003 AR28, Class 2A1, 4.41%, 12/25/33(5) 1,436,840 1,200,000 Credit Suisse Mortgage Capital Certificates, Series 2007 TF2A, Class A1, VRN, 2.90%, 5/15/08, resets monthly off the 1-month LIBOR plus 0.18% with no caps (Acquired 7/24/07, Cost $1,200,000)(5)(7) 1,146,529 260,942 FHLMC, Series 77, Class H, 8.50%, 9/15/20(5) 282,521 368,497 FHLMC, Series 2541, Class EA, 5.00%, 3/1/16(5) 372,553 1,573,484 FHLMC, Series 2567, Class OD, 5.00%, 8/15/15(5) 1,593,892 1,200,000 FHLMC, Series 2926, Class EW SEQ, 5.00%, 1/15/25(5) 1,185,018 743,577 FHLMC, Series 2937, Class KA, 4.50%, 12/15/14(5) 748,028 2,617,178 FNMA, Series 2005-63, Class HA SEQ, 5.00%, 4/25/23(5) 2,663,640 1,660,000 Greenwich Capital Commercial Funding Corp., Series 2005 GG3, Class A2 SEQ, 4.31%, 8/10/42(5) 1,649,090 - ------ 16 Balanced Shares/Principal Amount Value $ 309,978 Greenwich Capital Commercial Funding Corp., Series 2006 FL4A, Class A1, VRN, 2.83%, 5/5/08, resets monthly off the 1-month LIBOR plus 0.09% with no caps (Acquired 12/14/06, Cost $309,977)(5)(7) $ 290,413 293,563 GS Mortgage Securities Corp. II, Series 2007 EOP, Class A1 VRN, 2.83%, 5/6/08, resets monthly off the 1-month LIBOR plus 0.09% with no caps(5) 271,846 1,382,796 J.P. Morgan Mortgage Trust, Series 2005 A8, Class 6A2, 5.13%, 11/25/35(5) 1,360,543 3,200,000 LB-UBS Commercial Mortgage Trust, Series 2003 C3, Class A3 SEQ, 3.85%, 5/15/27(5) 3,095,834 900,000 LB-UBS Commercial Mortgage Trust, Series 2004 C1, Class A2 SEQ, 3.62%, 1/15/29(5) 891,653 1,000,000 LB-UBS Commercial Mortgage Trust, Series 2004 C4, Class A2, 4.57%, 6/15/29(5) 1,000,183 1,309,211 LB-UBS Commercial Mortgage Trust, Series 2005 C2, Class A2 SEQ, 4.82%, 4/15/30(5) 1,310,206 3,000,000 LB-UBS Commercial Mortgage Trust, Series 2005 C3, Class A3 SEQ, 4.65%, 7/30/30(5) 2,954,076 400,000 LB-UBS Commercial Mortgage Trust, Series 2006 C1, Class A4 SEQ, 5.16%, 2/15/31(5) 389,011 256,287 Lehman Brothers Floating Rate Commercial Mortgage Trust, Series 2006 LLFA, Class A1, VRN, 2.80%, 5/15/08, resets monthly off the 1-month LIBOR plus 0.08% with no caps (Acquired 8/7/06, Cost $256,287)(5)(7) 241,520 98,865 MASTR Alternative Loans Trust, Series 2003-8, Class 4A1, 7.00%, 12/25/33 96,746 816,208 Merrill Lynch Floating Trust, Series 2006-1, Class A1, VRN, 2.79%, 5/15/08, resets monthly off the 1-month LIBOR plus 0.07% with no caps (Acquired 10/31/06, Cost $816,208)(5)(7) 765,530 835,569 Thornburg Mortgage Securities Trust, Series 2006-5, Class A1, VRN, 3.02%, 5/27/08, resets monthly off the 1-month LIBOR plus 0.12% with no caps(5) 782,119 Shares/Principal Amount Value $ 875,000 Washington Mutual Mortgage Pass-Through Certificates, Series 2005 AR4, Class A3, 4.59%, 4/25/35(5) $874,822 2,408,129 Wells Fargo Mortgage Backed Securities Trust, Series 2007-11, Class A19 SEQ, 6.00%, 8/25/37(5) 2,361,103 ------------ TOTAL COLLATERALIZED MORTGAGE OBLIGATIONS (Cost $52,678,166) 52,082,005 ------------ Municipal Securities -- 2.0% 3,700,000 Clark County School District GO, Series 2004 D, (Building Bonds), 5.00%, 12/15/14, Prerefunded at 100% of Par (MBIA)(5)(8) 4,080,915 3,600,000 Clark County School District GO, Series 2005 C, (Building Bonds), 5.00%, 12/15/15, Prerefunded at 100% of Par (FSA)(5)(8) 3,993,084 800,000 Illinois GO, (Taxable Pension), 5.10%, 6/1/33(5) 780,608 2,700,000 Massachusetts GO, Series 2005 C, 5.00%, 9/1/15, Prerefunded at 100% of Par(5)(8) 2,986,038 ------------ TOTAL MUNICIPAL SECURITIES (Cost $11,610,191) 11,840,645 ------------ Adjustable-Rate U.S. Government Agency Mortgage-Backed Securities(4) -- 1.7% 1,896,463 FHLMC, 6.80%, 8/1/36(5) 1,939,387 2,477,766 FHLMC, 6.00%, 11/1/36(5) 2,538,379 1,563,085 FNMA, 6.50%, 5/1/36(5) 1,607,434 1,063,735 FNMA, 6.42%, 9/1/36(5) 1,094,047 1,170,548 FNMA, 6.45%, 9/1/36(5) 1,210,789 1,349,228 FNMA, 5.97%, 6/1/37(5) 1,379,259 ------------ TOTAL ADJUSTABLE-RATE U.S. GOVERNMENT AGENCY MORTGAGE-BACKED SECURITIES (Cost $9,719,213) 9,769,295 ------------ Asset-Backed Securities(4) -- 0.5% 361,000 Accredited Mortgage Loan Trust, Series 2006-2, Class A1, VRN, 2.94%, 5/27/08, resets monthly off the 1-month LIBOR plus 0.04% with no caps(5) 355,983 1,000,000 CNH Equipment Trust, Series 2007 C, Class A3A SEQ, 5.21%, 12/15/11(5) 1,001,007 - ------ 17 Balanced Shares/Principal Amount Value $ 460,598 Long Beach Mortgage Loan Trust, Series 2006-6, Class 2A1, VRN, 2.94%, 5/27/08, resets monthly off the 1-month LIBOR plus 0.04% with no caps(5) $ 457,031 373,373 SLM Student Loan Trust, Series 2006-5, Class A2, VRN, 2.91%, 7/25/08, resets quarterly off the 3-month LIBOR minus 0.01% with no caps(5) 370,903 194,657 SLM Student Loan Trust, Series 2006-10, Class A2, VRN, 2.93%, 7/25/08, resets quarterly off the 3-month LIBOR plus 0.01% with no caps(5) 193,793 249,918 Soundview Home Equity Loan Trust, Series 2006-3, Class A1, VRN, 2.94%, 5/27/08, resets monthly off the 1-month LIBOR plus 0.04% with no caps(5) 249,071 ------------ TOTAL ASSET-BACKED SECURITIES (Cost $2,639,464) 2,627,788 ------------ U.S. Government Agency Securities -- 0.2% 1,200,000 FHLMC, 2.875%, 4/30/10(3)(5) (Cost $1,211,348) 1,202,450 ------------ Sovereign Governments & Agencies -- 0.1% 145,000 Hydro Quebec, 8.40%, 1/15/22 195,180 575,000 Province of Quebec, 5.00%, 7/17/09(5) 588,410 ------------ TOTAL SOVEREIGN GOVERNMENTS & AGENCIES (Cost $749,765) 783,590 ------------ Temporary Cash Investments -- 3.0% 10,000,000 FHLB Discount Notes, 1.75%, 5/1/08(5)(9) 10,000,000 Repurchase Agreement, Credit Suisse First Boston, Inc., (collateralized by various U.S. Treasury obligations, 7.25%, 8/15/22, valued at $7,650,901), in a joint trading account at 1.87%, dated 4/30/08, due 5/1/08 (Delivery value $7,500,390)(5) 7,500,000 ------------ TOTAL TEMPORARY CASH INVESTMENTS (Cost $17,500,000) 17,500,000 ------------ Value Temporary Cash Investments - Securities Lending Collateral(10) -- 7.2% Repurchase Agreement, Barclays Capital Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.98%, dated 4/30/08, due 5/1/08 (Delivery value $8,166,393) $ 8,165,944 Repurchase Agreement, BNP Paribas Securities Corp., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.99%, dated 4/30/08, due 5/1/08 (Delivery value $8,500,470) 8,500,000 Repurchase Agreement, Deutsche Bank Securities Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $8,500,465) 8,500,000 Repurchase Agreement, Lehman Brothers Inc. /Lehman Brothers Commercial Paper Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 2.39%, dated 4/30/08, due 5/1/08 (Delivery value $8,500,564) 8,500,000 Repurchase Agreement, Morgan Stanley & Co. Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $8,500,465) 8,500,000 ------------ TOTAL TEMPORARY CASH INVESTMENTS - SECURITIES LENDING COLLATERAL (Cost $42,165,944) 42,165,944 ------------ TOTAL INVESTMENT SECURITIES -- 111.1% (Cost $612,174,935) 648,036,861 ------------ OTHER ASSETS AND LIABILITIES -- (11.1)% (64,954,653) ------------ TOTAL NET ASSETS -- 100.0% $583,082,208 ============ - ------ 18 Balanced Futures Contracts Expiration Underlying Face Amount Unrealized Contracts Purchased Date at Value Gain (Loss) 653 U.S. Treasury 2-Year Notes June 2008 $138,884,938 $ (7,593) 141 U.S. Treasury 5-Year Notes June 2008 15,789,797 (157,066) ------------ ------------ $154,674,735 $(164,659) ============ ============ Underlying Face Amount Unrealized Contracts Sold Expiration Date at Value Gain (Loss) 56 U.S. Long Bond June 2008 $ 6,545,875 $ 42,763 355 U.S. Treasury 10-Year Notes June 2008 41,113,437 65,352 ------------ ------------ $47,659,312 $108,115 ============ ============ Swap Agreements Notional Unrealized Amount Description of Agreement Expiration Date Gain (Loss) CREDIT DEFAULT $9,700,000 Pay quarterly a fixed rate equal June 2012 $273,637 to 0.35% multiplied by the notional amount and receive from Barclays Bank plc upon each default event of one of the issues of Dow Jones CDX N.A. Investment Grade 8, par value of the proportional notional amount. 1,130,000 Pay quarterly a fixed rate equal December 2012 (4,305) to 0.40% multiplied by the notional amount and receive from Bank of America N.A. upon each default event of FHLMC, par value of the proportional notional amount of FHLMC, VRN, 5.08%, 2/7/11. 1,295,000 Pay quarterly a fixed rate equal September 2012 30,422 to 0.63% multiplied by the notional amount and receive from Deutsche Bank AG upon each default event of Morgan Stanley, par value of the proportional notional amount of Morgan Stanley, 6.60%, 4/1/12. 1,100,000 Pay quarterly a fixed rate equal December 2012 13,284 to 0.72% multiplied by the notional amount and receive from Deutsche Bank AG upon each default event of Barclays Bank plc, par value of the proportional notional amount of Barclays Bank plc, VRN, 4.57%, 10/27/08. 580,000 Pay quarterly a fixed rate equal December 2012 5,968 to 0.73% multiplied by the notional amount and receive from Barclays Bank plc upon each default event of American International Group, Inc., par value of the proportional notional amount of American International Group, Inc., 4.25%, 5/15/13. 580,000 Pay quarterly a fixed rate equal December 2012 453 to 2.45% multiplied by the notional amount and receive from Bank of America N.A. upon each default event of Toll Brothers, Inc., par value of the proportional notional amount of Toll Brothers Finance Corp., 6.875%, 11/15/12. 580,000 Pay quarterly a fixed rate equal December 2012 (8,904) to 2.85% multiplied by the notional amount and receive from Barclays Bank plc upon each default event of Toll Brothers, Inc., par value of the proportional notional amount of Toll Brothers Finance Corp., 6.875%, 11/15/12. 240,000 Pay quarterly a fixed rate equal March 2013 (1,915) to 0.70% multiplied by the notional amount and receive from Barclays Bank plc upon each default event of Rohm & Haas Company, par value of the proportional notional amount of Rohm & Haas Company, 7.85%, 7/15/29. 2,650,000 Pay quarterly a fixed rate equal March 2017 37,082 to 0.12% multiplied by the notional amount and receive from Barclays Bank plc upon each default event of Pfizer Inc., par value of the proportional notional amount of Pfizer Inc., 4.65%, 3/1/18. 1,290,000 Pay quarterly a fixed rate equal September 2017 38,508 to 0.64% multiplied by the notional amount and receive from Deutsche Bank AG upon each default event of JPMorgan Chase & Co., par value of the proportional notional amount of JPMorgan Chase & Co., 6.75%, 2/1/11. ------------ $384,230 ============ - ------ 19 Balanced Notes to Schedule of Investments CDX = Credit Derivative Indexes FHLB = Federal Home Loan Bank FHLMC = Federal Home Loan Mortgage Corporation FNMA = Federal National Mortgage Association FSA = Financial Security Assurance, Inc. GNMA = Government National Mortgage Association GO = General Obligation LB-UBS = Lehman Brothers Inc. -- UBS AG LIBOR = London Interbank Offered Rate MASTR = Mortgage Asset Securitization Transactions, Inc. MBIA = MBIA Insurance Corporation resets = The frequency with which a security's coupon changes, based on current market conditions or an underlying index. The more frequently a security resets, the less risk the investor is taking that the coupon will vary significantly from current market rates. SEQ = Sequential Payer STRIPS = Separate Trading of Registered Interest and Principal of Securities VRN = Variable Rate Note. Interest reset date is indicated. Rate shown is effective April 30, 2008. (1) Industry is less than 0.05% of total net assets. (2) Non-income producing. (3) Security, or a portion thereof, was on loan as of April 30, 2008. (4) Final maturity indicated, unless otherwise noted. (5) Security, or a portion thereof, has been segregated for forward commitments, futures contracts and/or swap agreements. (6) Forward commitment. (7) Security was purchased under Rule 144A of the Securities Act of 1933 or is a private placement and, unless registered under the Act or exempted from registration, may only be sold to qualified institutional investors. The aggregate value of restricted securities at April 30, 2008, was $8,922,924, which represented 1.5% of total net assets. (8) Escrowed to maturity in U.S. government securities or state and local government securities. (9) The rate indicated is the yield to maturity at purchase. (10) Investments represent purchases made by the lending agent with cash collateral received through securities lending transactions. See Notes to Financial Statements. - ------ 20 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) ASSETS Investment securities, at value (cost of $570,008,991) -- including $42,924,236 of securities on loan $605,870,917 Investments made with cash collateral received for securities on loan, at value (cost of $42,165,944) 42,165,944 ------------- Total investment securities, at value (cost of $612,174,935) 648,036,861 Cash 73,287 Cash collateral received for securities on loan 1,894 Receivable for investments sold 10,918,230 Receivable for variation margin on futures contracts 110,028 Unrealized appreciation on swap agreements 399,354 Dividends and interest receivable 2,052,271 ------------- 661,591,925 ------------- LIABILITIES Payable for collateral received for securities on loan 42,167,838 Payable for investments purchased 35,899,450 Unrealized depreciation on swap agreements 15,124 Accrued management fees 427,305 ------------- 78,509,717 ------------- NET ASSETS $583,082,208 ============= NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $546,491,986 Undistributed net investment income 1,330,944 Accumulated net realized loss on investment transactions (938,445) Net unrealized appreciation on investments 36,197,723 ------------- $583,082,208 ============= INVESTOR CLASS, $0.01 PAR VALUE Net assets $574,913,147 Shares outstanding 36,985,830 Net asset value per share $15.54 INSTITUTIONAL CLASS, $0.01 PAR VALUE Net assets $8,169,061 Shares outstanding 525,458 Net asset value per share $15.55 See Notes to Financial Statements. - ------ 21 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) INVESTMENT INCOME (LOSS) INCOME: Interest $ 6,377,256 Dividends (net of foreign taxes withheld of $14,612) 3,112,031 Securities lending, net 144,118 ------------- 9,633,405 ------------- EXPENSES: Management fees 2,671,496 Distribution and service fees -- Advisor Class 2,761 Directors' fees and expenses 6,861 Other expenses 651 ------------- 2,681,769 ------------- NET INVESTMENT INCOME (LOSS) 6,951,636 ------------- REALIZED AND UNREALIZED GAIN (LOSS) NET REALIZED GAIN (LOSS) ON: Investment transactions (2,929,988) Futures and swaps transactions 2,636,530 ------------- (293,458) ------------- CHANGE IN NET UNREALIZED APPRECIATION (DEPRECIATION) ON: Investments (30,492,955) Futures and swaps 360,113 ------------- (30,132,842) ------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (30,426,300) ------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(23,474,664) ============= See Notes to Financial Statements. - ------ 22 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Increase (Decrease) in Net Assets 2008 2007 OPERATIONS Net investment income (loss) $ 6,951,636 $ 13,585,777 Net realized gain (loss) (293,458) 41,026,936 Change in net unrealized appreciation (depreciation) (30,132,842) 1,286,437 ------------- ------------- Net increase (decrease) in net assets resulting from operations (23,474,664) 55,899,150 ------------- ------------- DISTRIBUTIONS TO SHAREHOLDERS From net investment income: Investor Class (6,934,467) (13,376,037) Institutional Class (51,881) (31,846) Advisor Class -- (278,770) From net realized gains: Investor Class (40,498,231) (24,593,629) Institutional Class (82,676) (48,992) Advisor Class -- (617,315) ------------- ------------- Decrease in net assets from distributions (47,567,255) (38,946,589) ------------- ------------- CAPITAL SHARE TRANSACTIONS Net increase (decrease) in net assets from capital share transactions 3,365,070 (20,109,153) ------------- ------------- NET INCREASE (DECREASE) IN NET ASSETS (67,676,849) (3,156,592) NET ASSETS Beginning of period 650,759,057 653,915,649 ------------- ------------- End of period $583,082,208 $650,759,057 ============= ============= Undistributed net investment income $1,330,944 $1,445,049 ============= ============= See Notes to Financial Statements. - ------ 23 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. Balanced Fund (the fund) is one fund in a series issued by the corporation. The fund is diversified under the 1940 Act. The fund's investment objective is to seek long-term capital growth and current income. The fund pursues its objective by investing approximately 60% of its assets in equity securities and the remainder in bonds and other fixed-income securities. The following is a summary of the fund's significant accounting policies. MULTIPLE CLASS -- The fund is authorized to issue the Investor Class and the Institutional Class. Prior to December 3, 2007, the fund was authorized to issue the Advisor Class (see Note 9). The share classes differ principally in their respective distribution and shareholder servicing expenses and arrangements. All shares of the fund represent an equal pro rata interest in the net assets of the class to which such shares belong, and have identical voting, dividend, liquidation and other rights and the same terms and conditions, except for class specific expenses and exclusive rights to vote on matters affecting only individual classes. Income, non-class specific expenses, and realized and unrealized capital gains and losses of the fund are allocated to each class of shares based on their relative net assets. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Discount notes may be valued through a commercial pricing service or at amortized cost, which approximates fair value. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the fund determines that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the fund to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Interest income is recorded on the accrual basis and includes paydown gain (loss) and accretion of discounts and amortization of premiums. SECURITIES ON LOAN -- The fund may lend portfolio securities through its lending agent to certain approved borrowers in order to earn additional income. The income earned, net of any rebates or fees, is included in the Statement of Operations. The fund continues to recognize any gain or loss in the market price of the securities loaned and records any interest earned or dividends declared. FUTURES CONTRACTS -- The fund may enter into futures contracts in order to manage the fund's exposure to changes in market conditions. One of the risks of entering into futures contracts is the possibility that the change in value of the contract may not correlate with the changes in value of the underlying securities. Upon entering into a futures contract, the fund is required to deposit either cash or securities in an amount equal to a certain percentage of the contract value (initial margin). Subsequent payments (variation margin) are made or received daily, in cash, by the fund. The variation margin is equal to the daily change in the contract value and is recorded as unrealized gains and losses. The fund recognizes a realized gain or loss when the contract is closed or expires. Net realized and unrealized gains or losses occurring during the holding period of futures contracts are a component of realized gain (loss) on futures and swaps transactions and unrealized appreciation (depreciation) on futures and swaps, respectively. - ------ 24 WHEN-ISSUED AND FORWARD COMMITMENTS -- The fund may engage in securities transactions on a when-issued or forward commitment basis. In these transactions, the securities' prices and yields are fixed on the date of the commitment. In a when-issued transaction, the payment and delivery are scheduled for a future date and during this period, securities are subject to market fluctuations. In a forward commitment transaction, the fund may sell a security and at the same time make a commitment to purchase the same security at a future date at a specified price. Conversely, the fund may purchase a security and at the same time make a commitment to sell the same security at a future date at a specified price. These types of transactions are executed simultaneously in what are known as "roll" transactions. The fund will segregate cash, cash equivalents or other appropriate liquid securities on its records in amounts sufficient to meet the purchase price. The fund accounts for "roll" transactions as purchases and sales; as such these transactions may increase portfolio turnover. SWAP AGREEMENTS -- The fund may enter into swap agreements in order to attempt to obtain or preserve a particular return or spread at a lower cost than obtaining a return or spread through purchases and/or sales of instruments in other markets; protect against currency fluctuations; attempt to manage duration to protect against any increase in the price of securities the fund anticipates purchasing at a later date; or gain exposure to certain markets in the most economical way possible. A basic swap agreement is a contract in which two parties agree to exchange the returns earned or realized on predetermined investments or instruments. Credit default swaps enable an investor to buy/sell protection against a credit event of a specific issuer. The seller of credit protection against a security or basket of securities receives an up-front or periodic payment to compensate against potential default events. The fund may enhance returns by selling protection or attempt to mitigate credit risk by buying protection. The fund will segregate cash, cash equivalents or other appropriate liquid securities on its records in amounts sufficient to meet requirements. Unrealized gains are reported as an asset and unrealized losses are reported as a liability on the Statement of Assets and Liabilities. Swap agreements are valued daily and changes in value, including the periodic amounts of interest to be paid or received on swaps, are recorded as unrealized appreciation (depreciation) on futures and swaps. Realized gain or loss is recorded upon receipt or payment of a periodic settlement or termination of swap agreements. The risks of entering into swap agreements include the possible lack of liquidity, failure of the counterparty to meet its obligations, and that there may be unfavorable changes in the underlying investments and instruments. REPURCHASE AGREEMENTS -- The fund may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. The fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable the fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to the fund under each repurchase agreement. JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, the fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. INCOME TAX STATUS -- It is the fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The fund is no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income are declared and paid quarterly. Distributions from net realized gains, if any, are generally declared and paid annually. - ------ 25 INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the fund. In addition, in the normal course of business, the fund enters into contracts that provide general indemnifications. The fund's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the fund. The risk of material loss from such claims is considered by management to be remote. USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. 2. FEES AND TRANSACTIONS WITH RELATED PARTIES MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the fund with investment advisory and management services in exchange for a single, unified management fee (the fee) per class. The Agreement provides that all expenses of the fund, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of the specific class of shares of the fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula takes into account all of the investment advisor's assets under management in the fund's investment strategy (strategy assets) to calculate the appropriate fee rate for the fund. The strategy assets include the fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule for the fund ranges from 0.80% to 0.90% for the Investor Class and Advisor Class. The Institutional Class is 0.20% less at each point within the range. The effective annual management fee for the six months ended April 30, 2008 was 0.90% and 0.70%, for the Investor Class and Institutional Class, respectively. DISTRIBUTION AND SERVICE FEES -- The Board of Directors has adopted a Master Distribution and Individual Shareholder Services Plan (the plan) for the Advisor Class, pursuant to Rule 12b-1 of the 1940 Act. The plan provides that the Advisor Class will pay American Century Investment Services, Inc. (ACIS) an annual distribution and service fee equal to 0.25%. The fees are computed and accrued daily based on the Advisor Class's daily net assets and paid monthly in arrears. The distribution fee provides compensation for expenses incurred in connection with distributing shares of the Advisor Class including, but not limited to, payments to brokers, dealers, and financial institutions that have entered into sales agreements with respect to shares of the fund. The service fee provides compensation for shareholder and administrative services rendered by ACIS, its affiliates or independent third party providers. Fees incurred under the plan during the six months ended April 30, 2008, are detailed in the Statement of Operations. RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, ACIS, and the corporation's transfer agent, American Century Services, LLC. The fund is eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. The fund has a securities lending agreement with JPMorgan Chase Bank (JPMCB). Prior to December 12, 2007, the fund had a bank line of credit agreement with JPMCB. JPMCB is a custodian of the fund and a wholly owned subsidiary of JPM. 3. INVESTMENT TRANSACTIONS Purchases of investment securities, excluding short-term investments, for the six months ended April 30, 2008, totaled $420,509,857, of which $188,243,800 represented U.S. Treasury and Agency obligations. Sales of investment securities, excluding short-term investments, for the six months ended April 30, 2008, totaled $461,387,380, of which $228,461,292 represented U.S. Treasury and Agency obligations. - ------ 26 4. CAPITAL SHARE TRANSACTIONS Transactions in shares of the fund were as follows: Six months ended Year ended April 30, 2008 October 31, 2007 Shares Amount Shares Amount INVESTOR CLASS/ SHARES AUTHORIZED 250,000,000 200,000,000 =========== =========== Sold 1,534,630 $ 24,119,468 3,006,468 $ 51,143,165 Issued in connection with reclassification (Note 9) 732,507 12,525,159 -- -- Issued in reinvestment of distributions 2,927,632 46,311,449 2,197,817 36,858,846 Redeemed (4,629,943) (73,649,597) (6,167,002) (105,041,020) ----------- ------------- ----------- ------------- 564,826 9,306,479 (962,717) (17,039,009) ----------- ------------- ----------- ------------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 15,000,000 15,000,000 Sold 498,420 7,695,663 26,034 443,053 Issued in reinvestment of distributions 8,600 134,557 4,818 80,838 Redeemed (58,144) (901,336) (26,339) (453,631) ----------- ------------- ----------- ------------- 448,876 6,928,884 4,513 70,260 ----------- ------------- ----------- ------------- ADVISOR CLASS/ SHARES AUTHORIZED N/A 50,000,000 =========== =========== Sold 5,330 90,447 203,936 3,468,589 Issued in reinvestment of distributions -- -- 46,532 776,513 Redeemed in connection with reclassification (Note 9) (732,507) (12,525,159) -- -- Redeemed (25,768) (435,581) (430,742) (7,385,506) ----------- ------------- ----------- ------------- (752,945) (12,870,293) (180,274) (3,140,404) ----------- ------------- ----------- ------------- Net increase (decrease) 260,757 $ 3,365,070 (1,138,478) $(20,109,153) =========== ============= =========== ============= 5. SECURITIES LENDING As of April 30, 2008, securities in the fund valued at $42,924,236 were on loan through the lending agent, JPMCB, to certain approved borrowers. JPMCB receives and maintains collateral in the form of cash and/or acceptable securities as approved by ACIM. Cash collateral is invested in authorized investments by the lending agent in a pooled account. The value of cash collateral received at period end is disclosed in the Statement of Assets and Liabilities and investments made with the cash by the lending agent are listed in the Schedule of Investments. Any deficiencies or excess of collateral must be delivered or transferred by the member firms no later than the close of business on the next business day. The total market value of all collateral received, at this date, was $43,833,697. The fund's risks in securities lending are that the borrower may not provide additional collateral when required or return the securities when due. If the borrower defaults, receipt of the collateral by the fund may be delayed or limited. 6. BANK LINE OF CREDIT Effective December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, has a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The fund may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The fund did not borrow from the line during the six months ended April 30, 2008. 7. RISK FACTORS There are certain risks involved in investing in foreign securities. These risks include those resulting from future adverse political, social, and economic developments, fluctuations in currency exchange rates, the possible imposition of exchange controls, and other foreign laws or restrictions. - ------ 27 8. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of paydown losses, interest on swap agreements, certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: Federal tax cost of investments $614,651,132 ============= Gross tax appreciation of investments $ 47,877,482 Gross tax depreciation of investments (14,491,753) ------------- Net tax appreciation (depreciation) of investments $ 33,385,729 ============= The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. 9. CORPORATE EVENT On July 27, 2007, the Advisor Class shareholders of the fund approved a reclassification of Advisor Class shares into Investor Class shares. The change was approved by the Board of Directors on November 29, 2006 and March 7, 2007. The reclassification was effective on December 3, 2007. 10. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 28 FINANCIAL HIGHLIGHTS Balanced Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $17.47 $17.03 $16.52 $15.73 $14.77 $12.98 ------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) 0.18 0.35 0.35 0.31 0.26 0.27 Net Realized and Unrealized Gain (Loss) (0.81) 1.11 1.40 0.77 0.98 1.77 ------- ------- ------- ------- ------- ------- Total From Investment Operations (0.63) 1.46 1.75 1.08 1.24 2.04 ------- ------- ------- ------- ------- ------- Distributions From Net Investment Income (0.18) (0.36) (0.35) (0.29) (0.28) (0.25) From Net Realized Gains (1.12) (0.66) (0.89) -- -- -- ------- ------- ------- ------- ------- ------- Total Distributions (1.30) (1.02) (1.24) (0.29) (0.28) (0.25) ------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $15.54 $17.47 $17.03 $16.52 $15.73 $14.77 ======= ======= ======= ======= ======= ======= TOTAL RETURN(3) (3.64)% 8.92% 11.04% 6.89% 8.46% 15.92% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.90%(4) 0.90% 0.90% 0.90% 0.90% 0.90% Ratio of Net Investment Income (Loss) to Average Net Assets 2.34%(4) 2.08% 2.13% 1.89% 1.65% 1.96% Portfolio Turnover Rate 72% 161% 197% 206% 204% 133% Net Assets, End of Period (in millions) $575 $636 $637 $615 $595 $583 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 29 Balanced Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $17.47 $17.04 $16.53 $15.73 $14.78 $12.99 ------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) 0.19 0.39 0.38 0.33 0.28 0.41 Net Realized and Unrealized Gain (Loss) (0.79) 1.09 1.40 0.80 0.98 1.66 ------- ------- ------- ------- ------- ------- Total From Investment Operations (0.60) 1.48 1.78 1.13 1.26 2.07 ------- ------- ------- ------- ------- ------- Distributions From Net Investment Income (0.20) (0.39) (0.38) (0.33) (0.31) (0.28) From Net Realized Gains (1.12) (0.66) (0.89) -- -- -- ------- ------- ------- ------- ------- ------- Total Distributions (1.32) (1.05) (1.27) (0.33) (0.31) (0.28) ------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $15.55 $17.47 $17.04 $16.53 $15.73 $14.78 ======= ======= ======= ======= ======= ======= TOTAL RETURN(3) (3.48)% 9.07% 11.26% 7.17% 8.61% 16.13% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.70%(4) 0.70% 0.70% 0.70% 0.70% 0.70% Ratio of Net Investment Income (Loss) to Average Net Assets 2.54%(4) 2.28% 2.33% 2.09% 1.85% 2.16% Portfolio Turnover Rate 72% 161% 197% 206% 204% 133% Net Assets, End of Period (in thousands) $8,169 $1,338 $1,228 $1,237 $225 $155 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 30 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the fund's investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the fund. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The fund's Form N-Q is available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The fund also makes its complete schedule of portfolio holdings for the most recent quarter of its fiscal year available on its website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 31 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The BLENDED INDEX is considered the benchmark for Balanced. It combines two widely known indices in proportion to the asset mix of the fund. Accordingly, 60% of the index is represented by the S&P 500 Index, which reflects the approximately 60% of the fund's assets invested in stocks. The blended index's remaining 40% is represented by the Citigroup US Broad Investment-Grade Bond Index, which reflects the roughly 40% of the fund's assets invested in fixed-income securities. The CITIGROUP AGENCY INDEX is a market-capitalization-weighted index that includes US government sponsored agencies with a remaining maturity of at least one year. The CITIGROUP CREDIT INDEX includes US and non-US corporate securities and non-US sovereign and provincial securities. The CITIGROUP MORTGAGE INDEX measures the mortgage component of the US BIG Bond Index, comprising 30- and 15-year GNMA, FNMA, and FHLMC pass-throughs and FNMA and FHLMC balloon mortgages. The CITIGROUP TREASURY INDEX is comprised of US Treasury securities with an amount outstanding of at least $5 billion and a remaining maturity of at least one year. The CITIGROUP US BROAD INVESTMENT-GRADE (BIG) BOND INDEX is a market- capitalization-weighted index that includes fixed-rate Treasury, government- sponsored, mortgage, asset-backed, and investment-grade issues with a maturity of one year or longer. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® INDEX is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The S&P 500 INDEX is a market value-weighted index of the stocks of 500 publicly traded U.S. companies chosen for market size, liquidity, and industry group representation that are considered to be leading firms in dominant industries. Each stock's weight in the index is proportionate to its market value. Created by Standard & Poor's, it is considered to be a broad measure of U.S. stock market performance. - ------ 32 [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS . . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investments P.O. Box 419200 Kansas City, MO 64141-6200 PRSRT STD U.S. POSTAGE PAID AMERICAN CENTURY COMPANIES American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60497S
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS VEEDOT® FUND PRESIDENT'S LETTER JONATHAN THOMAS [photo of Jonathan Thomas] Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® Veedot Fund for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns . . . . . . . . . . . . . . . . . . . . . . 2 VEEDOT Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries. . . . . . . . . . . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 6 Shareholder Fee Example . . . . . . . . . . . . . . . . . . . . . . . 7 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 9 FINANCIAL STATEMENTS Statement of Assets and Liabilities . . . . . . . . . . . . . . . . . 12 Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . 13 Statement of Changes in Net Assets. . . . . . . . . . . . . . . . . . 14 Notes to Financial Statements . . . . . . . . . . . . . . . . . . . . 15 Financial Highlights. . . . . . . . . . . . . . . . . . . . . . . . . 19 OTHER INFORMATION Additional Information. . . . . . . . . . . . . . . . . . . . . . . . 21 Index Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 22 The opinions expressed in the Market Perspective and the Portfolio Commentary reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of Chief Investment Officer] By Steve Lurito, Chief Investment Officer, U.S. Growth Equity VOLATILITY UP, STOCKS DOWN The six months ended April 30, 2008 saw stocks produce negative returns as market volatility surged in the wake of the subprime credit crisis. In terms of the economy, tighter credit and the slumping housing market hurt consumer spending and confidence, leading many economists to suggest we're already in recession. Meanwhile, mounting losses hurt the banks, brokers, and other big institutional players important for the functioning of the financial markets. Facing dual economic and financial crises, the Federal Reserve (the Fed) took a series of extraordinary steps, slashing interest rates and acting as a lender of last resort not only for banks, but also major brokers. That helped stocks rebound, with many analysts suggesting that the mid-March buy-out of investment bank Bear Stearns--in a deal arranged by the Fed--put a floor under the market. RETURNS BY SIZE, STYLE MIXED Performance by size and style was mixed (see the accompanying table), reflecting the volatile trading during the period, when corporate earnings estimates were revised down sharply. Looking at returns by sector, energy shares were the only segment to produce positive results during the six months. At the other end of the spectrum, credit-related losses took a big bite out of earnings for financials stocks, which performed worst. Consumer discretionary shares also lagged badly, as did information technology stocks, which suffered from poor pricing and demand trends for chips and some consumer-related tech goods. OPPORTUNITY AMID VOLATILITY Despite the uncertainty surrounding the economy, we think growth-oriented stocks can perform well relative to value as proven earnings growth becomes scarce during economic slowdowns. And while we don't see an end to market volatility anytime soon, we view this dynamic as a natural part of the investing cycle--and one that presents us with opportunities to build positions in what we believe are high-quality companies trading at attractive prices. Indeed, investors should rest assured that we're finding no shortage of companies demonstrating sustained earnings growth and business improvement. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% * Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE Veedot Total Returns as of April 30, 2008 Average Annual Returns Since Inception 6 months(1) 1 year 5 years Inception Date INVESTOR CLASS -15.78% 10.34% 15.54% 5.41% 11/30/99 RUSSELL 3000 INDEX(2) -9.82% -5.16% 11.40% 2.50% -- Institutional Class -15.78% 10.49% 15.74% 3.35% 8/1/00 (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. The fund's investment process may involve high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. International investing involves special risks, such as political instability and currency fluctuations. Investing in emerging markets may accentuate these risks. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 3 Veedot Growth of $10,000 Over Life of Class $10,000 investment made November 30, 1999
One-Year Returns Over Life of Class Periods ended April 30 2000* 2001 2002 2003 2004 2005 2006 2007 2008 Investor Class 35.20% -26.18% -4.21% -20.92% 32.28% 0.20% 28.94% 9.29% 10.34% Russell 3000 Index 7.32% -12.96% -10.73% -13.99% 25.11% 6.97% 18.08% 14.48% -5.16% * From 11/30/99, the Investor Class's inception date. Not annualized. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. The fund's investment process may involve high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. International investing involves special risks, such as political instability and currency fluctuations. Investing in emerging markets may accentuate these risks. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 4 PORTFOLIO COMMENTARY Veedot Portfolio Manager: John Small, Jr. PERFORMANCE SUMMARY Veedot returned -15.78%* for the six months ended April 30, 2008, compared with its benchmark, the Russell 3000 Index, which returned -9.82% for the period. As discussed in the Market Perspective on page 2, equity markets generally declined during the reporting period, as the subprime-mortgage crisis spread to other areas of the economy, and rising energy and commodity prices increased inflation concerns. In this environment, mid-cap stocks outpaced their large- and small-cap counterparts, while growth-oriented shares outperformed value stocks in both the large- and mid-cap spaces. Amid the volatility, Veedot's highly systematic investment process struggled with a difficult environment that weighed on performance relative to benchmark returns. Stock selection in the information technology, industrials, and consumer discretionary sectors, as well as an overweight allocation to the information technology sector accounted for the bulk of Veedot's poor absolute and relative performance. Slightly curtailing those losses, effective stock selection in the materials sector yielded positive absolute and relative results. Veedot also maintained a significant allocation to foreign holdings. During the reporting period, these holdings collectively detracted from portfolio returns. TECHNOLOGY DETRACTED The information technology sector represented Veedot's largest absolute and relative sector weakness, as many technology companies saw a retracing of share price in the face of profit-taking. China Finance Online, which operates online, subscription-based information services on Chinese investment markets, was a significant positive contributor to portfolio returns in the past. The company, whose share price tumbled 47%, is not represented in the benchmark. Blue Coat Systems, a maker of proxy server appliances, was a meaningful contributor to gains in previous periods, but lost ground in the current reporting period. Blue Coat, whose share price slid 48%, was one of several overweight holdings in the communications equipment industry to weigh on relative performance. Top Ten Holdings as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Lindsay Corp.(1) 2.6% 1.0% Sohu.com Inc. 2.1% 1.5% Research In Motion Ltd. 1.9% 1.6% Badger Meter Inc. 1.7% 1.0% Cal-Maine Foods, Inc. 1.7% 1.1% Mosaic Co. (The) 1.6% 1.5% Republic Bancorp, Inc. Cl A 1.5% -- ICON plc ADR 1.5% 1.0% Central European Distribution Corp. 1.4% -- Metalico, Inc. 1.4% 1.0% (1) Formerly Lindsay Manufacturing Co. * All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. - ------ 5 Veedot INDUSTRIALS SANK, BUT CERTAIN HOLDINGS HELPED Within the industrials sector, Veedot maintained an overweight stake in shipping companies that are not represented in the benchmark. Meaningful contributors to performance in the past amid escalating spot dry bulk shipping prices, these companies collectively detracted from absolute and relative gains in the reporting period. DryShips and TBS International, in particular, weighed on relative returns as their share prices sank 30% and 36%, respectively. Elsewhere in industrials, select holdings aided portfolio performance. Overweight stakes in the machinery industry benefited from increased demand for agriculture machinery and irrigation systems. Lindsay Corp., a maker of agriculture irrigation systems, was the largest single positive contributor to Veedot's performance as its share price gained 112%. MATERIALS HELPED Veedot's overweight in materials reflected a focus on the chemicals industry. This group has benefited as a higher standard of living in emerging-market countries, lower availability of farmland, and greater global focus on biofuels has translated into growing global demand for agriculture. That increased demand has in turn led to a corresponding rise in commodities prices and demand for fertilizer. Fertilizer company Mosaic, in particular, was a contributor to absolute and relative portfolio returns as the company continued to benefit from higher demand in the fertilizer market. Mosaic, whose share price climbed 76%, is not a benchmark constituent. An overweight stake in nitrogen and phosphate fertilizer maker CF Industries also yielded absolute and relative strength as its share price gained 52%. OUTLOOK Using a systematic and technically-driven process, Veedot focuses on finding companies whose fundamental characteristics meet strict requirements for accelerating earnings and revenue growth. Such companies must also have historical stock price performance that suggests impending share price appreciation. Despite the volatility and the market's tilt away from momentum-style investing during the course of the reporting period, we find the current environment accommodating to our disciplined, consistent style. Our systematic process of identifying companies with accelerating growth and price momentum continues to identify opportunities across industry sectors. Top Five Industries as of April 30, 2008 % of net % of net assets as of assets as of 4/30/08 10/31/07 Oil, Gas & Consumable Fuels 16.6% 0.9% Machinery 9.4% 7.3% Energy Equipment & Services 8.6% 3.0% Metals & Mining 5.1% 7.2% IT Services 4.5% 2.8% Types of Investments in Portfolio % of net % of net assets as of assets as of 4/30/08 10/31/07 Domestic Common Stocks 78.0% 68.3% Foreign Common Stocks(1) 18.6% 29.8% TOTAL COMMON STOCKS 96.6% 98.1% Temporary Cash Investments 5.6% 3.1% Other Assets and Liabilities (2.2)% (1.2)% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. - ------ 6 SHAREHOLDER FEE EXAMPLE (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 7 Beginning Expenses Paid Account Ending During Period* Annualized Value Account Value 11/1/07 - Expense 11/1/07 4/30/08 4/30/08 Ratio* ACTUAL Investor Class $1,000 $842.20 $5.77 1.26% Institutional Class $1,000 $842.20 $4.86 1.06% HYPOTHETICAL Investor Class $1,000 $1,018.60 $6.32 1.26% Institutional Class $1,000 $1,019.59 $5.32 1.06% * Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 8 SCHEDULE OF INVESTMENTS Veedot APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 96.6% AUTO COMPONENTS -- 2.3% 113,500 ArvinMeritor, Inc. $ 1,695,690 140,500 Exide Technologies(1) 2,049,895 ------------ 3,745,585 ------------ BEVERAGES -- 2.6% 37,000 Central European Distribution Corp.(1) 2,254,040 35,000 Coca-Cola Co. (The) 2,060,450 ------------ 4,314,490 ------------ CAPITAL MARKETS -- 1.1% 101,000 Knight Capital Group, Inc. Cl A(1) 1,889,710 ------------ CHEMICALS -- 2.8% 21,000 Mosaic Co. (The)(1) 2,572,710 11,500 Potash Corp. of Saskatchewan 2,115,425 ------------ 4,688,135 ------------ COMMERCIAL BANKS -- 2.7% 106,500 Republic Bancorp, Inc. Cl A 2,463,345 60,500 Simmons First National Corp. Cl A 1,936,605 ------------ 4,399,950 ------------ COMMERCIAL SERVICES & SUPPLIES -- 2.7% 34,000 FTI Consulting, Inc.(1) 2,176,000 173,500 Metalico, Inc.(1) 2,248,560 ------------ 4,424,560 ------------ COMMUNICATIONS EQUIPMENT -- 1.9% 25,500 Research In Motion Ltd.(1) 3,101,565 ------------ COMPUTERS & PERIPHERALS -- 1.0% 60,000 Western Digital Corp.(1) 1,739,400 ------------ DISTRIBUTORS -- 1.0% 74,500 LKQ Corp.(1) 1,621,120 ------------ DIVERSIFIED TELECOMMUNICATION SERVICES -- 1.0% 62,000 Chunghwa Telecom Co. Ltd. ADR 1,581,620 ------------ ELECTRIC UTILITIES -- 1.1% 71,500 Hawaiian Electric Industries, Inc. 1,758,185 ------------ ELECTRICAL EQUIPMENT -- 1.0% 75,000 Encore Wire Corp. 1,695,000 ------------ ENERGY EQUIPMENT & SERVICES -- 8.6% 65,000 Acergy SA ADR 1,600,950 34,000 Bristow Group Inc.(1) 1,793,500 Shares Value 29,500 Gulfmark Offshore Inc.(1) $ 1,764,100 50,500 Nabors Industries Ltd.(1) 1,895,770 69,000 Natural Gas Services Group Inc.(1) 1,718,100 25,500 Oceaneering International, Inc.(1) 1,702,890 68,000 Patterson-UTI Energy Inc. 1,899,920 48,000 Willbros Group, Inc.(1) 1,732,320 ------------ 14,107,550 ------------ FOOD PRODUCTS -- 2.7% 92,500 Cal-Maine Foods, Inc. 2,733,375 64,500 Flowers Foods Inc. 1,669,905 ------------ 4,403,280 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 3.4% 41,500 Covidien Ltd. 1,937,635 66,500 Neogen Corp.(1) 1,671,145 60,500 Zoll Medical Corp.(1) 2,019,490 ------------ 5,628,270 ------------ HEALTH CARE PROVIDERS & SERVICES -- 2.3% 54,500 CorVel Corp.(1) 1,793,050 304,500 Tenet Healthcare Corp.(1) 1,948,800 ------------ 3,741,850 ------------ INTERNET SOFTWARE & SERVICES -- 3.0% 151,000 SkillSoft plc ADR(1) 1,517,550 50,500 Sohu.com Inc.(1) 3,491,065 ------------ 5,008,615 ------------ IT SERVICES -- 4.5% 95,500 CyberSource Corp.(1) 1,733,325 15,500 International Business Machines Corp. 1,870,850 36,500 ManTech International Corp. Cl A(1) 1,743,605 7,500 MasterCard Inc. Cl A 2,086,200 ------------ 7,433,980 ------------ LIFE SCIENCES TOOLS & SERVICES -- 1.5% 34,000 ICON plc ADR(1) 2,448,000 ------------ MACHINERY -- 9.4% 31,500 Axsys Technologies, Inc.(1) 1,718,325 54,500 Badger Meter Inc. 2,837,815 43,500 Chart Industries Inc.(1) 1,767,840 22,000 Deere & Co. 1,849,540 41,000 Lindsay Corp. 4,268,920 23,000 Middleby Corp. (The)(1) 1,443,250 16,000 Valmont Industries, Inc. 1,575,360 ------------ 15,461,050 ------------ - ------ 9 Veedot Shares Value METALS & MINING -- 5.1% 33,000 Barrick Gold Corp. $ 1,274,460 13,000 Cleveland-Cliffs Inc. 2,085,200 23,000 Nucor Corp. 1,736,500 3,500 Rio Tinto plc ADR 1,645,000 19,500 Schnitzer Steel Industries, Inc. Cl A 1,716,000 ------------ 8,457,160 ------------ OIL, GAS & CONSUMABLE FUELS -- 16.6% 14,500 Apache Corp. 1,952,860 33,000 Arch Coal Inc. 1,892,880 85,500 BPZ Resources, Inc.(1) 1,665,540 88,500 Callon Petroleum Co.(1) 1,770,000 35,500 Chesapeake Energy Corp. 1,835,350 32,000 Cimarex Energy Co. 1,993,600 49,500 Denbury Resources Inc.(1) 1,512,720 16,000 EOG Resources Inc. 2,087,680 106,000 GeoResources, Inc.(1) 1,571,980 17,500 Hess Corp. 1,858,500 55,500 Mariner Energy Inc.(1) 1,529,580 47,000 Southwestern Energy Co.(1) 1,988,570 30,500 Stone Energy Corp.(1) 1,858,670 44,500 W&T Offshore Inc. 1,820,050 26,000 Whiting Petroleum Corp.(1) 1,989,520 ------------ 27,327,500 ------------ PERSONAL PRODUCTS -- 0.9% 33,000 Herbalife Ltd. 1,444,740 ------------ PHARMACEUTICALS -- 1.0% 33,500 Teva Pharmaceutical Industries Ltd. ADR 1,567,130 ------------ ROAD & RAIL -- 3.5% 41,500 Arkansas Best Corp. 1,638,420 34,500 CSX Corp. 2,171,775 28,500 Ryder System, Inc. 1,951,395 ------------ 5,761,590 ------------ SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 2.0% 78,000 Altera Corp. 1,659,840 114,000 Volterra Semiconductor Corp.(1) 1,716,840 ------------ 3,376,680 ------------ SOFTWARE -- 2.2% 55,000 MICROS Systems, Inc.(1) 1,960,750 48,500 Shanda Interactive Entertainment Ltd. ADR(1) 1,663,065 ------------ 3,623,815 ------------ Shares Value SPECIALTY RETAIL -- 3.1% 210,000 Pier 1 Imports, Inc.(1) $ 1,638,000 52,500 Urban Outfitters Inc.(1) 1,798,125 463,000 Wet Seal, Inc. (The) Cl A(1) 1,606,610 ------------ 5,042,735 ------------ TEXTILES, APPAREL & LUXURY GOODS -- 0.9% 23,000 NIKE, Inc. Cl B 1,536,400 ------------ THRIFTS & MORTGAGE FINANCE -- 0.7% 142,977 United Community Financial Corp. 1,173,841 ------------ TOBACCO -- 2.0% 28,000 Universal Corp. 1,797,320 29,000 UST Inc. 1,510,030 ------------ 3,307,350 ------------ TRADING COMPANIES & DISTRIBUTORS -- 1.0% 38,000 Watsco, Inc. 1,724,060 ------------ WIRELESS TELECOMMUNICATION SERVICES -- 1.0% 74,000 Partner Communications Co. Ltd. ADR 1,721,980 ------------ TOTAL COMMON STOCKS (Cost $138,850,261) 159,256,896 ------------ Temporary Cash Investments -- 5.6% Repurchase Agreement, Credit Suisse First Boston, Inc., (collateralized by various U.S. Treasury obligations, 7.25%, 8/15/22, valued at $1,122,132), in a joint trading account at 1.87%, dated 4/30/08, due 5/1/08 (Delivery value $1,100,057) 1,100,000 Repurchase Agreement, Morgan Stanley Group, Inc., (collateralized by various U.S. Treasury obligations, 7.875%-8.750%, 8/15/20-2/15/21, valued at $8,363,010), in a joint trading account at 1.90%, dated 4/30/08, due 5/1/08 (Delivery value $8,200,433) 8,200,000 ------------ TOTAL TEMPORARY CASH INVESTMENTS (Cost $9,300,000) 9,300,000 ------------ TOTAL INVESTMENT SECURITIES -- 102.2% (Cost $148,150,261) 168,556,896 ------------ OTHER ASSETS AND LIABILITIES -- (2.2)% (3,643,873) ------------ TOTAL NET ASSETS -- 100.0% $164,913,023 ============ - ------ 10 Veedot Notes to Schedule of Investments ADR = American Depositary Receipt (1) Non-income producing. See Notes to Financial Statements. - ------ 11 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) ASSETS Investment securities, at value (cost of $148,150,261) $168,556,896 Cash 58,628 Receivable for investments sold 5,250,993 Dividends and interest receivable 104,154 ------------- 173,970,671 ------------- LIABILITIES Payable for investments purchased 8,891,777 Accrued management fees 165,871 ------------- 9,057,648 ------------- NET ASSETS $ 164,913,023 ============= NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $ 183,717,266 Accumulated net investment loss (229,708) Accumulated net realized loss on investment transactions (38,981,170) Net unrealized appreciation on investments 20,406,635 ------------- $ 164,913,023 ============= INVESTOR CLASS, $0.01 PAR VALUE Net assets $157,631,247 Shares outstanding 20,251,038 Net asset value per share $7.78 INSTITUTIONAL CLASS, $0.01 PAR VALUE Net assets $7,281,776 Shares outstanding 921,510 Net asset value per share $7.90 See Notes to Financial Statements. - ------ 12 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) INVESTMENT INCOME (LOSS) INCOME: Dividends (net of foreign taxes withheld of $36,275) $ 756,515 Interest 66,306 ------------- 822,821 ------------- EXPENSES: Management fees 1,048,560 Directors' fees and expenses 1,948 Other expenses 2,021 ------------- 1,052,529 ------------- NET INVESTMENT INCOME (LOSS) (229,708) ------------- REALIZED AND UNREALIZED GAIN (LOSS) Net realized gain (loss) on investment transactions (2,479,155) Change in net unrealized appreciation (depreciation) on investments (29,988,418) ------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (32,467,573) ------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(32,697,281) ============= See Notes to Financial Statements. - ------ 13 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Increase (Decrease) in Net Assets 2008 2007 OPERATIONS Net investment income (loss) $ (229,708) $ (281,699) Net realized gain (loss) (2,479,155) 33,343,183 Change in net unrealized appreciation (depreciation) (29,988,418) 35,640,640 ------------ ------------ Net increase (decrease) in net assets resulting from operations (32,697,281) 68,702,124 ------------ ------------ CAPITAL SHARE TRANSACTIONS Net increase (decrease) in net assets from capital share transactions (6,682,821) (30,019,917) ------------ ------------ NET INCREASE (DECREASE) IN NET ASSETS (39,380,102) 38,682,207 NET ASSETS Beginning of period 204,293,125 165,610,918 ------------ ------------ End of period $164,913,023 $204,293,125 ============ ============ Accumulated net investment loss $(229,708) -- ============ ============ See Notes to Financial Statements. - ------ 14 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. Veedot Fund (the fund) is one fund in a series issued by the corporation. The fund is nondiversified under the 1940 Act. The fund's investment objective is to seek long-term capital growth. The fund pursues its objective by investing primarily in common stocks that management believes to have better than average prospects for appreciation. The fund uses an approach to common stock investing developed by American Century Investments. This approach relies heavily on quantitative tools to identify attractive investment opportunities, regardless of company size, industry type or geographic location, on a disciplined, consistent basis. The following is a summary of the fund's significant accounting policies. MULTIPLE CLASS -- The fund is authorized to issue the Investor Class and the Institutional Class. The share classes differ principally in their respective distribution and shareholder servicing expenses and arrangements. All shares of the fund represent an equal pro rata interest in the net assets of the class to which such shares belong, and have identical voting, dividend, liquidation and other rights and the same terms and conditions, except for class specific expenses and exclusive rights to vote on matters affecting only individual classes. Income, non-class specific expenses, and realized and unrealized capital gains and losses of the fund are allocated to each class of shares based on their relative net assets. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Discount notes may be valued through a commercial pricing service or at amortized cost, which approximates fair value. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the fund determines that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the fund to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. FOREIGN CURRENCY TRANSACTIONS -- All assets and liabilities initially expressed in foreign currencies are translated into U.S. dollars at prevailing exchange rates at period end. Purchases and sales of investment securities, dividend and interest income, and certain expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. For assets and liabilities, other than investments in securities, net realized and unrealized gains and losses from foreign currency translations arise from changes in currency exchange rates. - ------ 15 Net realized and unrealized foreign currency exchange gains or losses occurring during the holding period of investment securities are a component of realized gain (loss) on investment transactions and unrealized appreciation (depreciation) on investments, respectively. Certain countries may impose taxes on the contract amount of purchases and sales of foreign currency contracts in their currency. The fund records the foreign tax expense, if any, as a reduction to the net realized gain (loss) on foreign currency transactions. REPURCHASE AGREEMENTS -- The fund may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. The fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable the fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to the fund under each repurchase agreement. JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, the fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. INCOME TAX STATUS -- It is the fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The fund is no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. REDEMPTION -- The fund may impose a 2.00% redemption fee on shares held less than 180 days. The redemption fee is recorded as a reduction in the cost of shares redeemed. The redemption fee is retained by the fund and helps cover transaction costs that long-term investors may bear when a fund sells securities to meet investor redemptions. Prior to March 1, 2007, the fund imposed a 2.00% redemption fee on shares held less than 5 years. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the fund. In addition, in the normal course of business, the fund enters into contracts that provide general indemnifications. The fund's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the fund. The risk of material loss from such claims is considered by management to be remote. USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. 2. FEES AND TRANSACTIONS WITH RELATED PARTIES MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the fund with investment advisory and management services in exchange for a single, unified management fee (the fee) per class. The Agreement provides that all expenses of the fund, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of the specific class of shares of the fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula - ------ 16 takes into account all of the investment advisor's assets under management in the fund's investment strategy (strategy assets) to calculate the appropriate fee rate for the fund. The strategy assets include the fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule for the fund ranges from 1.00% to 1.25% for the Investor Class. The Institutional Class is 0.20% less at each point within the range. The effective annual management fee for each class of the fund for the six months ended April 30, 2008, was 1.25% and 1.05% for the Investor Class and Institutional Class, respectively. RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, American Century Investment Services, Inc., and the corporation's transfer agent, American Century Services, LLC. The fund is eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. Prior to December 12, 2007, the fund had a bank line of credit agreement with JPMorgan Chase Bank (JPMCB). JPMCB is a custodian of the fund and a wholly owned subsidiary of JPM. 3. INVESTMENT TRANSACTIONS Purchases and sales of investment securities, excluding short-term investments, for the six months ended April 30, 2008, were $209,055,837 and $216,992,230, respectively. 4. CAPITAL SHARE TRANSACTIONS Transactions in shares of the fund were as follows: Six months ended April 30, 2008 Year ended October 31, 2007 Shares Amount Shares Amount INVESTOR CLASS/SHARES AUTHORIZED 200,000,000 200,000,000 =========== =========== Sold 893,698 $ 7,198,628 2,809,737 $ 23,058,182 Redeemed (1,729,129) (13,435,393)(1) (6,725,943) (47,100,091)(2) ----------- --------------- ----------- --------------- (835,431) (6,236,765) (3,916,206) (24,041,909) ----------- --------------- ----------- --------------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 100,000,000 100,000,000 =========== =========== Sold 66,827 536,699 146,901 1,160,072 Redeemed (124,437) (982,755)(3) (965,925) (7,138,080)(4) ----------- --------------- ----------- --------------- (57,610) (446,056) (819,024) (5,978,008) ----------- --------------- ----------- --------------- Net increase (decrease) (893,041) $ (6,682,821) (4,735,230) $ (30,019,917) =========== =============== =========== =============== (1) Net of redemption fees of $44,425. (2) Net of redemption fees of $62,403. (3) Net of redemption fees of $9,353. (4) Net of redemption fees of $9,817. 5. BANK LINE OF CREDIT Effective December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, has a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The fund may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The fund did not borrow from the line during the six months ended April 30, 2008. - ------ 17 6. RISK FACTORS The fund's investment process may involve high portfolio turnover, high commission costs and high capital gains distributions. In addition, its investment approach may involve higher volatility and risk. There are certain risks involved in investing in foreign securities. These risks include those resulting from future adverse political, social, and economic developments, fluctuations in currency exchange rates, the possible imposition of exchange controls, and other foreign laws or restrictions. Investing in emerging markets may accentuate these risks. 7. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: Federal tax cost of investments $148,396,090 ============ Gross tax appreciation of investments $22,245,222 Gross tax depreciation of investments (2,084,416) ------------ Net tax appreciation (depreciation) of investments $20,160,806 ============ The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. As of October 31, 2007, the fund had $(36,502,015) of accumulated capital losses, which represent net capital loss carryovers that may be used to offset future realized capital gains for federal income tax purposes. Capital loss carryovers of $(4,184,563) and $(32,317,452) expire in 2009 and 2010, respectively. 8. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 18 FINANCIAL HIGHLIGHTS Veedot Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $9.25 $6.17 $5.57 $5.06 $4.99 $3.77 ------ ----- ----- ----- ----- ----- Income From Investment Operations Net Investment Income (Loss)(2) (0.01) (0.01) (0.02) (0.03) (0.03) (0.03) Net Realized and Unrealized Gain (Loss) (1.46) 3.09 0.62 0.53 0.09 1.24 ------ ----- ----- ----- ----- ----- Total From Investment Operations (1.47) 3.08 0.60 0.50 0.06 1.21 ------ ----- ----- ----- ----- ----- Redemption Fees(2) --(3) --(3) --(3) 0.01 0.01 0.01 ------ ----- ----- ----- ----- ----- Net Asset Value, End of Period $7.78 $9.25 $6.17 $5.57 $5.06 $4.99 ====== ===== ===== ===== ===== ===== TOTAL RETURN(4) (15.78)% 49.92% 10.77% 10.08% 1.40% 32.36% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.26%(5) 1.25% 1.45% 1.50% 1.50% 1.50% Ratio of Net Investment Income (Loss) to Average Net Assets (0.29)%(5) (0.18)% (0.39)% (0.51)% (0.57)% (0.68)% Portfolio Turnover Rate 127% 207% 330% 399% 344% 415% Net Assets, End of Period (in thousands) $157,631 $195,105 $154,374 $178,078 $219,618 $228,724 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Per-share amount was less than $0.005. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable redemption fees. Total returns for periods less than one year are not annualized. Total returns are calculated based on the net asset value on the last business day. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 19 Veedot Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $9.38 $6.25 $5.63 $5.10 $5.02 $3.79 ------ ----- ------ ----- ----- ----- Income From Investment Operations Net Investment Income (Loss)(2) --(3) --(3) (0.01) (0.02) (0.02) (0.02) Net Realized and Unrealized Gain (Loss) (1.48) 3.13 0.63 0.54 0.09 1.24 ------ ----- ------ ----- ----- ----- Total From Investment Operations (1.48) 3.13 0.62 0.52 0.07 1.22 ------ ----- ------ ----- ----- ----- Redemption Fees(2) --(3) --(3) --(3) 0.01 0.01 0.01 ------ ----- ------ ----- ----- ----- Net Asset Value, End of Period $7.90 $9.38 $6.25 $5.63 $5.10 $5.02 ====== ===== ====== ===== ===== ===== TOTAL RETURN(4) (15.78)% 50.08% 11.01% 10.39% 1.59% 32.45% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.06%(5) 1.05% 1.25% 1.30% 1.30% 1.30% Ratio of Net Investment Income (Loss) to Average Net Assets (0.09)%(5) 0.02% (0.19)% (0.31)% (0.37)% (0.48)% Portfolio Turnover Rate 127% 207% 330% 399% 344% 415% Net Assets, End of Period (in thousands) $7,282 $9,188 $11,237 $11,440 $12,400 $12,458 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Per-share amount was less than $0.005. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable redemption fees. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 20 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the fund's investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the fund. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The fund's Form N-Q is available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The fund also makes its complete schedule of portfolio holdings for the most recent quarter of its fiscal year available on its website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 21 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 1000® GROWTH INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 1000® VALUE INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 2000® INDEX is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® GROWTH INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 2000® VALUE INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 3000® INDEX measures the performance of the 3,000 largest U.S. companies based on total market capitalization, which represents approximately 98% of the investable U.S. equity market. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® GROWTH INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL MIDCAP® VALUE INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. - ------ 22 NOTES - ------ 23 NOTES - ------ 24 [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE. . . . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE. . . . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS . .. . . . . . . . . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES. . . . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF. . . . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investments P.O. Box 419200 Kansas City, MO 64141-6200 PRSRT STD U.S. POSTAGE PAID AMERICAN CENTURY COMPANIES American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60503S
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS CAPITAL VALUE FUND PRESIDENT'S LETTER [photo of Jonathan Thomas] JONATHAN THOMAS Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® Capital Value Fund for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns . . . . . . . . . . . . . . . . . . . . . . 2 CAPITAL VALUE Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries. . . . . . . . . . . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 6 Shareholder Fee Example . . . . . . . . . . . . . . . . . . . . . . . 7 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 9 FINANCIAL STATEMENTS Statement of Assets and Liabilities . . . . . . . . . . . . . . . . . 12 Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . 13 Statement of Changes in Net Assets. . . . . . . . . . . . . . . . . . 14 Notes to Financial Statements . . . . . . . . . . . . . . . . . . . . 15 Financial Highlights. . . . . . . . . . . . . . . . . . . . . . . . . 19 OTHER INFORMATION Additional Information. . . . . . . . . . . . . . . . . . . . . . . . 22 Index Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 23 The opinions expressed in the Market Perspective and the Portfolio Commentary reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of chief investment officer] By Phil Davidson, Chief Investment Officer, U.S. Value Equity A CHALLENGING PERIOD FOR STOCKS The six months ended April 30, 2008, were a difficult time for the U.S. equity market. Fallout from a meltdown in the subprime lending industry, a liquidity crunch in the credit markets, and a notable slowdown in the U.S. economy put downward pressure on stocks, which declined steadily for much of the six-month period. In particular, the first three months of 2008 marked the worst quarterly performance for the major stock indexes in nearly six years. However, the market bottomed in mid-March and staged a modest recovery during the last six weeks of the period. Credit and economic fears eased somewhat as economic data appeared to improve and a number of bellwether companies reported earnings that exceeded expectations. VALUE STOCKS HELD THEIR OWN Value stocks kept pace with growth issues during the period, trailing slightly among large- and mid-cap shares and outperforming in the small-cap segment of the market (see the accompanying table). This performance was noteworthy because value-oriented stocks often underperform in a slowing economic environment as investors seek out the steady growth rates of high-quality growth companies. In addition, financials stocks, which make up a meaningful portion of the value stock universe, were hit the hardest by the subprime turmoil and credit crunch. Many of the country's largest financial institutions faced substantial subprime-related write-downs and credit losses, resulting in steep markdowns in their share prices. Financials stocks slumped despite the Federal Reserve's efforts to shore up the financial system with an aggressive program of short-term interest rate cuts and injections of liquidity. Nonetheless, value stocks held up well relative to growth shares, pointing up the importance of downside protection in a highly volatile market environment. In addition, good security selection became increasingly important, which plays to our strengths -- rigorous analysis and thorough research to separate companies with weaker business models from those that are fundamentally sound. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% *Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE Capital Value Total Returns as of April 30, 2008 Average Annual Returns 5 Since Inception 6 months(1) 1 year years Inception Date INVESTOR CLASS -11.06% -10.34% 10.75% 6.45% 3/31/99 Return After-Tax on Distributions(2) -11.82% -11.12% 10.32% 6.00% Return After-Tax on Distributions and Sale of Shares(2) -6.09% -5.62% 9.38% 5.49% RUSSELL 1000 VALUE INDEX(3) -9.83% -8.97% 12.85% 6.09% -- Institutional Class -10.97% -10.16% 10.97% 6.41% 3/1/02 Return After-Tax on Distributions(2) -11.77% -10.96% 10.50% 5.95% Return After-Tax on Distributions and Sale of Shares(2) -6.00% -5.46% 9.57% 5.49% Advisor Class -11.19% -10.58% -- 9.90% 5/14/03 Return After-Tax on Distributions(2) -11.93% -11.32% -- 9.50% Return After-Tax on Distributions and Sale of Shares(2) -6.22% -5.82% -- 8.62% (1) Total returns for periods less than one year are not annualized. (2) After-tax returns are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts. (3) Data provided by Lipper Inc. - A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 3 Capital Value Growth of $10,000 Over Life of Class $10,000 investment made March 31, 1999
One-Year Returns Over Life of Class Periods ended April 30 1999* 2000 2001 2002 2003 2004 2005 2006 2007 2008 Investor Class 10.20% -6.71% 16.92% 0.21% -12.11% 26.67% 10.31% 13.69% 17.03% -10.34% Russell 1000 Value Index 9.34% -3.88% 6.43% -3.91% -13.01% 26.26% 13.92% 18.31% 18.15% -8.97% * From 3/31/99, the Investor Class's inception date. Not annualized. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Unless otherwise indicated, performance reflects Investor Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 4 PORTFOLIO COMMENTARY Capital Value Portfolio Managers: Chuck Ritter and Brendan Healy PERFORMANCE SUMMARY Capital Value returned -11.06%(1) for the six months ended April 30, 2008. By comparison, its benchmark, the Russell 1000 Value Index, returned -9.83%, while the broader market, as measured by the S&P 500 Index, returned - -9.64%.(2) The portfolio's return reflects operating expenses, while the indices' returns do not. The median return for Morningstar's Large Cap Value category (whose performance, like Capital Value's, reflects fund operating expenses) was -10.34%.(3) Capital Value's performance for the period was hampered by the volatile, challenging market environment described in the Market Perspective on page 2. In addition, the portfolio faced headwinds as growth stocks outperformed value in both the large- and mid-cap spaces. For part of the period, investors favored companies that were already strong performers, a momentum bias that did not fit well with the portfolio's investment approach of seeking stocks that are undervalued by the market. In spite of these negative factors, Capital Value benefited from strong security selection. Although positions in energy and financials stocks detracted, investments in the information technology, industrials, and consumer staples sectors contributed to relative performance. The portfolio's relative performance for the reporting period deviated from its longer-term results. Since Capital Value's inception on March 31, 1999, the portfolio has produced an average annualized return of 6.45%, topping the returns for Morningstar's Large Cap Value category median, the Russell 1000 Value Index, and the S&P 500 Index for that period (see performance information on pages 3-4). ENERGY SLOWED PROGRESS Capital Value's position in the energy sector contributed to performance on an absolute basis, though it underperformed in relative terms as energy stocks provided the strongest results for the Russell 1000 Value Index. Our valuation work led us to emphasize internationally integrated oil and gas suppliers -- stocks that advanced, though not as strongly as the stocks of companies that specialized in oil and gas exploration and production. FINANCIALS DETRACTED Financials stocks -- the portfolio's largest sector position, but a relative underweight nonetheless -- contributed to the portfolio's underperformance versus Top Ten Holdings as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 Exxon Mobil Corp. 5.5% 5.3% General Electric Co. 4.7% 2.5% AT&T Inc. 3.8% 3.2% Chevron Corp. 3.7% 3.3% Bank of America Corp. 3.3% 3.2% Royal Dutch Shell plc ADR 2.9% 3.2% JPMorgan Chase & Co. 2.9% 2.5% Johnson & Johnson 2.8% 1.9% Pfizer Inc. 2.7% 1.8% ConocoPhillips 2.6% 2.2% (1) All fund returns referenced in this commentary are for Investor Class shares. Total returns for periods less than one year are not annualized. (2) The S&P 500 Index returned -4.68%, 10.62% and 2.48% on an average annualized basis for the one-year, five-year and since inception periods ended April 30, 2008, respectively. (3) The median returns for Morningstar's Large Cap Value category were -8.57%, 11.15% and 5.20% on an average annualized basis for the one-year, five-year and since inception periods ended April 30, 2008, respectively. ©2008 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. - ------ 5 Capital Value the benchmark. Many financials firms lagged as the fallout in the subprime sector continued. Two of our top detractors were Freddie Mac, a stockholder-owned corporation chartered by Congress to keep money flowing to mortgage lenders in support of home ownership; and Citigroup, the diversified global financial services company. Both stocks declined on news of bigger-than-expected losses resulting from housing weakness and the deterioration of mortgage credit. INFORMATION TECHNOLOGY BOOSTED RESULTS On the positive side, our security selection in information technology -- a sector that underperformed for the benchmark -- added value. A significant holding was leading technology company International Business Machines (IBM), which has benefited from a diverse product mix, strategic acquisitions, and cost efficiencies. Despite economic headwinds, the company reported better-than-expected results driven by growth in U.S. and overseas markets. Near the end of the period, IBM also declared a 25% increase in its quarterly dividend. INDUSTRIALS ADDED TO PERFORMANCE Our complement of industrial stocks lifted relative results. A key holding was Caterpillar, the world's leading manufacturer of heavy-duty construction equipment. The company's stock benefited from strong international results -- as commodity prices increased, Caterpillar was well-positioned in energy and mining markets, especially in developing regions. CONSUMER STAPLES PROVIDED TOP CONTRIBUTOR In consumer staples, our smaller-than-the-benchmark position added value, but security selection was even more meaningful. A significant holding was retailer Wal-Mart Stores. Higher prices at the pump and falling home prices are putting pressure on consumers -- making the Wal-Mart low-price strategy particularly appealing to lower-income households. OUTLOOK We continue to be bottom-up investment managers, evaluating each company individually and building our portfolio one stock at a time. As of April 30, 2008, the portfolio was broadly diversified, with ongoing overweight positions in the information technology and health care sectors. Our valuation work is also directing us toward smaller relative weightings in consumer staples and utilities stocks. In addition, we are still finding value opportunities among mega-cap stocks and have maintained our bias toward them. Top Five Industries as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 Oil, Gas & Consumable Fuels 15.1% 14.4% Pharmaceuticals 9.2% 7.9% Diversified Financial Services 8.5% 9.8% Diversified Telecommunication Services 6.1% 4.7% Commercial Banks 5.9% 5.7% Types of Investments in Portfolio % of % of net assets net assets as of as of 4/30/08 10/31/07 Common Stocks 98.9% 99.4% Temporary Cash Investments 0.9% 0.5% Other Assets and Liabilities(1) 0.2% 0.1% (1) Includes securities lending collateral and other assets and liabilities. - ------ 6 SHAREHOLDER FEE EXAMPLE (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 7 Beginning Expenses Paid Account Ending During Period* Annualized Value Account Value 11/1/07 - Expense 11/1/07 4/30/08 4/30/08 Ratio* ACTUAL Investor Class $1,000 $889.40 $5.17 1.10% Institutional Class $1,000 $890.30 $4.23 0.90% Advisor Class $1,000 $888.10 $6.34 1.35% HYPOTHETICAL Investor Class $1,000 $1,019.39 $5.52 1.10% Institutional Class $1,000 $1,020.39 $4.52 0.90% Advisor Class $1,000 $1,018.15 $6.77 1.35% *Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 8 SCHEDULE OF INVESTMENTS Capital Value APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 98.9% AEROSPACE & DEFENSE -- 1.1% 54,700 Northrop Grumman Corp. $ 4,024,279 ------------ BEVERAGES -- 2.0% 83,000 Coca-Cola Co. (The) 4,886,210 67,200 Pepsi Bottling Group Inc. 2,265,312 ------------ 7,151,522 ------------ BIOTECHNOLOGY -- 0.5% 44,800 Amgen Inc.(1) 1,875,776 ------------ CAPITAL MARKETS -- 3.1% 43,300 Bank of New York Mellon Corp. (The) 1,884,849 101,500 Merrill Lynch & Co., Inc. 5,057,745 92,300 Morgan Stanley 4,485,780 ------------ 11,428,374 ------------ CHEMICALS -- 2.3% 91,300 du Pont (E.I.) de Nemours & Co. 4,465,483 60,900 PPG Industries, Inc. 3,737,433 ------------ 8,202,916 ------------ COMMERCIAL BANKS -- 5.9% 25,300 Fifth Third Bancorp 542,179 128,200 National City Corp.(2) 807,660 39,800 PNC Financial Services Group 2,760,130 127,000 U.S. Bancorp 4,304,030 193,200 Wachovia Corp. 5,631,780 252,300 Wells Fargo & Co. 7,505,925 ------------ 21,551,704 ------------ COMMERCIAL SERVICES & SUPPLIES -- 1.7% 33,200 Avery Dennison Corp. 1,599,908 75,600 R.R. Donnelley & Sons Co. 2,316,384 65,900 Waste Management, Inc. 2,378,990 ------------ 6,295,282 ------------ COMMUNICATIONS EQUIPMENT -- 0.3% 99,100 Motorola, Inc. 987,036 ------------ COMPUTERS & PERIPHERALS -- 1.2% 96,900 Hewlett-Packard Co. 4,491,315 ------------ CONSUMER FINANCE -- 0.3% 59,400 Discover Financial Services 1,081,674 ------------ DIVERSIFIED CONSUMER SERVICES -- 0.7% 119,500 H&R Block, Inc. 2,613,465 Shares Value DIVERSIFIED FINANCIAL SERVICES -- 8.5% 317,000 Bank of America Corp. $ 11,900,180 343,900 Citigroup Inc. 8,690,353 218,900 JPMorgan Chase & Co. 10,430,585 ------------ 31,021,118 ------------ DIVERSIFIED TELECOMMUNICATION SERVICES -- 6.1% 360,419 AT&T Inc. 13,951,819 26,600 Embarq Corp. 1,105,762 187,500 Verizon Communications Inc. 7,215,000 ------------ 22,272,581 ------------ ELECTRIC UTILITIES -- 2.7% 64,900 Exelon Corp. 5,547,652 92,100 PPL Corp. 4,422,642 ------------ 9,970,294 ------------ ENERGY EQUIPMENT & SERVICES -- 0.5% 25,100 National Oilwell Varco, Inc.(1) 1,718,095 ------------ FOOD & STAPLES RETAILING -- 2.6% 99,400 Kroger Co. (The) 2,708,650 79,200 Wal-Mart Stores, Inc. 4,592,016 65,400 Walgreen Co. 2,279,190 ------------ 9,579,856 ------------ FOOD PRODUCTS -- 0.9% 93,000 Unilever N.V. New York Shares 3,119,220 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 0.7% 53,800 Medtronic, Inc. 2,618,984 ------------ HEALTH CARE PROVIDERS & SERVICES -- 0.3% 23,700 Quest Diagnostics Inc. 1,189,266 ------------ HOTELS, RESTAURANTS & LEISURE -- 0.4% 12,800 Darden Restaurants, Inc. 455,424 19,100 McDonald's Corp. 1,137,978 ------------ 1,593,402 ------------ HOUSEHOLD DURABLES -- 0.7% 116,800 Newell Rubbermaid Inc. 2,397,904 ------------ INDEPENDENT POWER PRODUCERS & ENERGY TRADERS -- 0.8% 62,400 NRG Energy Inc.(1) 2,742,480 ------------ INDUSTRIAL CONGLOMERATES -- 5.4% 522,100 General Electric Co. 17,072,670 50,900 Tyco International Ltd. 2,381,611 ------------ 19,454,281 ------------ - ------ 9 Capital Value Shares Value INSURANCE -- 5.9% 91,400 Allstate Corp. $ 4,602,904 141,841 American International Group, Inc. 6,553,054 58,100 Hartford Financial Services Group Inc. (The) 4,140,787 65,900 Loews Corp. 2,775,049 20,300 Marsh & McLennan Companies, Inc. 560,077 41,600 Torchmark Corp. 2,693,184 ------------ 21,325,055 ------------ IT SERVICES -- 1.8% 19,400 Electronic Data Systems Corp. 360,064 34,000 Fiserv, Inc.(1) 1,718,700 36,600 International Business Machines Corp. 4,417,620 ------------ 6,496,384 ------------ MACHINERY -- 3.3% 40,100 Caterpillar Inc. 3,283,388 8,000 Deere & Co. 672,560 55,200 Dover Corp. 2,730,744 65,200 Ingersoll-Rand Company Ltd. Cl A 2,893,576 31,200 Parker-Hannifin Corp. 2,491,320 ------------ 12,071,588 ------------ MEDIA -- 3.2% 42,447 CBS Corp. Cl B 979,252 117,200 Gannett Co., Inc. 3,354,264 269,500 Time Warner Inc. 4,002,075 84,900 Viacom Inc. Cl B(1) 3,263,556 ------------ 11,599,147 ------------ METALS & MINING -- 0.8% 37,600 Nucor Corp. 2,838,800 ------------ MULTILINE RETAIL -- 0.6% 47,200 Kohl's Corp.(1) 2,305,720 ------------ OFFICE ELECTRONICS -- 0.6% 148,900 Xerox Corp. 2,080,133 ------------ OIL, GAS & CONSUMABLE FUELS -- 15.1% 140,900 Chevron Corp. 13,547,535 110,600 ConocoPhillips 9,528,190 8,900 Devon Energy Corp. 1,009,260 215,000 Exxon Mobil Corp. 20,010,051 133,300 Royal Dutch Shell plc ADR 10,705,323 ------------ 54,800,359 ------------ PAPER & FOREST PRODUCTS -- 1.2% 65,400 Weyerhaeuser Co. 4,177,752 ------------ Shares Value PHARMACEUTICALS -- 9.2% 62,900 Abbott Laboratories $ 3,317,975 56,400 Eli Lilly & Co. 2,715,096 150,000 Johnson & Johnson 10,063,500 74,900 Merck & Co., Inc. 2,849,196 490,000 Pfizer Inc. 9,853,900 103,300 Wyeth 4,593,751 ------------ 33,393,418 ------------ ROAD & RAIL -- 0.2% 45,400 YRC Worldwide Inc.(1)(2) 737,750 ------------ SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 0.8% 67,400 Applied Materials, Inc. 1,257,684 80,300 Intel Corp. 1,787,478 ------------ 3,045,162 ------------ SOFTWARE -- 1.7% 126,300 Microsoft Corp. 3,602,076 115,300 Oracle Corp.(1) 2,404,005 ------------ 6,006,081 ------------ SPECIALTY RETAIL -- 2.6% 58,400 Best Buy Co., Inc. 2,512,368 86,700 Gap, Inc. (The) 1,614,354 95,100 Home Depot, Inc. (The) 2,738,880 113,500 Staples, Inc. 2,462,950 ------------ 9,328,552 ------------ TEXTILES, APPAREL & LUXURY GOODS -- 0.6% 30,700 VF Corp. 2,283,466 ------------ THRIFTS & MORTGAGE FINANCE -- 1.3% 92,000 Freddie Mac 2,291,720 100,600 MGIC Investment Corp.(2) 1,310,818 98,900 Washington Mutual, Inc.(2) 1,215,481 ------------ 4,818,019 ------------ TOBACCO -- 0.9% 51,500 Altria Group Inc. 1,030,000 46,800 Philip Morris International Inc.(1) 2,388,204 ------------ 3,418,204 ------------ WIRELESS TELECOMMUNICATION SERVICES -- 0.4% 167,600 Sprint Nextel Corp. 1,339,124 ------------ TOTAL COMMON STOCKS (Cost $296,353,909) 359,445,538 ------------ - ------ 10 Capital Value Principal Amount Value Temporary Cash Investments -- 0.9% $ 3,300,000 FHLB Discount Notes, 1.75%, 5/1/08(3) (Cost $3,300,000) $ 3,300,000 ------------ Temporary Cash Investments -- Securities Lending Collateral(4) -- 1.0% Repurchase Agreement, Barclays Capital Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.98%, dated 4/30/08, due 5/1/08 (Delivery value $998,218) 998,163 Repurchase Agreement, BNP Paribas Securities Corp., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.99%, dated 4/30/08, due 5/1/08 (Delivery value $700,039) 700,000 Repurchase Agreement, Deutsche Bank Securities Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $700,038) 700,000 Repurchase Agreement, Lehman Brothers Inc. / Lehman Brothers Commercial Paper Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 2.39%, dated 4/30/08, due 5/1/08 (Delivery value $700,046) 700,000 Repurchase Agreement, Morgan Stanley & Co. Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $700,038) 700,000 ------------ TOTAL TEMPORARY CASH INVESTMENTS -- SECURITIES LENDING COLLATERAL (Cost $3,798,163) 3,798,163 ------------ Principal Amount Value TOTAL INVESTMENT SECURITIES -- 100.8% (Cost $303,452,072) $366,543,701 ------------ OTHER ASSETS AND LIABILITIES -- (0.8)% (2,932,748) ------------ TOTAL NET ASSETS -- 100.0% $363,610,953 ============ Notes to Schedule of Investments ADR = American Depositary Receipt FHLB = Federal Home Loan Bank (1) Non-income producing. (2) Security, or a portion thereof, was on loan as of April 30, 2008. (3) The rate indicated is the yield to maturity at purchase. (4) Investments represent purchases made by the lending agent with cash collateral received through securities lending transactions. See Notes to Financial Statements. - ------ 11 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) ASSETS Investment securities, at value (cost of $299,653,909) -- including $3,599,372 of securities on loan $362,745,538 Investments made with cash collateral received for securities on loan, at value (cost of $3,798,163) 3,798,163 ------------ Total investment securities, at value (cost of $303,452,072) 366,543,701 Receivable for investments sold 1,519,031 Dividends and interest receivable 396,229 ------------ 368,458,961 ------------ LIABILITIES Disbursements in excess of demand deposit cash 200,298 Payable for collateral received on securities on loan 3,798,163 Payable for investments purchased 518,084 Accrued management fees 329,086 Distribution and service fees payable 2,377 ------------ 4,848,008 ------------ NET ASSETS $363,610,953 ============ NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $284,865,832 Undistributed net investment income 1,911,007 Undistributed net realized gain on investment transactions 13,742,485 Net unrealized appreciation on investments 63,091,629 ------------ $363,610,953 ============ INVESTOR CLASS, $0.01 PAR VALUE Net assets $335,512,818 Shares outstanding 45,593,640 Net asset value per share $7.36 INSTITUTIONAL CLASS, $0.01 PAR VALUE Net assets $16,568,433 Shares outstanding 2,250,558 Net asset value per share $7.36 ADVISOR CLASS, $0.01 PAR VALUE Net assets $11,529,702 Shares outstanding 1,568,347 Net asset value per share $7.35 See Notes to Financial Statements. - ------ 12 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) INVESTMENT INCOME (LOSS) INCOME: Dividends (net of foreign taxes withheld of $25,321) $ 5,737,145 Interest 49,435 Securities lending, net 55,121 ------------- 5,841,701 ------------- EXPENSES: Management fees 2,227,812 Distribution fees -- Advisor Class 3,033 Service fees -- Advisor Class 3,033 Distribution and service fees -- Advisor Class 13,165 Directors' fees and expenses 5,012 Other expenses 726 ------------- 2,252,781 ------------- NET INVESTMENT INCOME (LOSS) 3,588,920 ------------- REALIZED AND UNREALIZED GAIN (LOSS) Net realized gain (loss) on investment transactions 14,062,127 Change in net unrealized appreciation (depreciation) on investments (72,866,330) ------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (58,804,203) ------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(55,215,283) ============= See Notes to Financial Statements. - ------ 13 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Increase (Decrease) in Net Assets 2008 2007 OPERATIONS Net investment income (loss) $ 3,588,920 $ 8,188,675 Net realized gain (loss) 14,062,127 18,769,164 Change in net unrealized appreciation (depreciation) (72,866,330) 22,105,599 ------------- ------------ Net increase (decrease) in net assets resulting from operations (55,215,283) 49,063,438 ------------- ------------ DISTRIBUTIONS TO SHAREHOLDERS From net investment income: Investor Class (6,799,465) (7,057,821) Institutional Class (437,453) (534,336) Advisor Class (195,244) (212,420) From net realized gains: Investor Class (17,205,248) (6,173,467) Institutional Class (986,976) (410,071) Advisor Class (582,280) (225,243) ------------- ------------ Decrease in net assets from distributions (26,206,666) (14,613,358) ------------- ------------ CAPITAL SHARE TRANSACTIONS Net increase (decrease) in net assets from capital share transactions (60,516,244) (43,818,329) ------------- ------------ NET INCREASE (DECREASE) IN NET ASSETS (141,938,193) (9,368,249) NET ASSETS Beginning of period 505,549,146 514,917,395 ------------- ------------ End of period $363,610,953 $505,549,146 ============= ============ Undistributed net investment income $1,911,007 $5,754,249 ============= ============ See Notes to Financial Statements. - ------ 14 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. Capital Value Fund (the fund) is one fund in a series issued by the corporation. The fund is diversified under the 1940 Act. The fund's investment objective is to seek long-term capital growth. The fund pursues its objective by investing primarily in common stocks that management believes to be undervalued at the time of purchase. The fund also seeks to minimize the impact of federal income taxes on shareholder returns by attempting to minimize taxable distributions to shareholders. The following is a summary of the fund's significant accounting policies. MULTIPLE CLASS -- The fund is authorized to issue the Investor Class, the Institutional Class and the Advisor Class. The share classes differ principally in their respective distribution and shareholder servicing expenses and arrangements. All shares of the fund represent an equal pro rata interest in the net assets of the class to which such shares belong, and have identical voting, dividend, liquidation and other rights and the same terms and conditions, except for class specific expenses and exclusive rights to vote on matters affecting only individual classes. Income, non-class specific expenses, and realized and unrealized capital gains and losses of the fund are allocated to each class of shares based on their relative net assets. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Discount notes may be valued through a commercial pricing service or at amortized cost, which approximates fair value. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the fund determines that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the fund to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. SECURITIES ON LOAN -- The fund may lend portfolio securities through its lending agent to certain approved borrowers in order to earn additional income. The income earned, net of any rebates or fees, is included in the Statement of Operations. The fund continues to recognize any gain or loss in the market price of the securities loaned and records any interest earned or dividends declared. - ------ 15 REPURCHASE AGREEMENTS -- The fund may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. The fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable the fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to the fund under each repurchase agreement. JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, the fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. INCOME TAX STATUS -- It is the fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The fund is no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the fund. In addition, in the normal course of business, the fund enters into contracts that provide general indemnifications. The fund's maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the fund. The risk of material loss from such claims is considered by management to be remote. USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. 2. FEES AND TRANSACTIONS WITH RELATED PARTIES On September 25, 2007, the Advisor Class shareholders of the fund approved a change to the class's fee structure. The change was approved by the Board of Directors on November 29, 2006 and March 7, 2007. Effective December 3, 2007, the fee structure change resulted in an increase of 0.25% in the unified management fee and a simultaneous decrease of 0.25% in the total distribution and service fee, resulting in no change to the total operating expense ratio of the class. MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the fund with investment advisory and management services in exchange for a single, unified management fee (the fee) per class. The Agreement provides that all expenses of the fund, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of the specific class of shares of the fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula takes into account all of the investment advisor's assets under management in the fund's investment strategy (strategy assets) to calculate the appropriate fee rate for the fund. The strategy assets include the fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule for the fund ranges from 0.90% to 1.10% for the Investor Class and Advisor Class. The Institutional Class is 0.20% less at each point within the range. Prior to December 3, 2007, the Advisor Class was 0.25% less at each point within the range. The effective annual management fee for each class of the fund for the six months ended April 30, 2008, was 1.10%, 0.90% and 1.05% for the Investor Class, Institutional Class and Advisor Class, respectively. - ------ 16 DISTRIBUTION AND SERVICE FEES -- The Board of Directors has adopted a Master Distribution and Individual Shareholder Services Plan (the plan) for the Advisor Class, pursuant to Rule 12b-1 of the 1940 Act. The plan provides that the Advisor Class will pay American Century Investment Services, Inc. (ACIS) an annual distribution and service fee of 0.25%. Prior to December 3, 2007, the Board of Directors had adopted a Master Distribution and Shareholder Services Plan for the Advisor Class, pursuant to Rule 12b-1 of the 1940 Act, which provided that the Advisor Class would pay ACIS an annual distribution fee of 0.25% and an annual service fee of 0.25%. The fees are computed and accrued daily based on the Advisor Class's daily net assets and paid monthly in arrears. The distribution fee provides compensation for expenses incurred in connection with distributing shares of the Advisor Class including, but not limited to, payments to brokers, dealers, and financial institutions that have entered into sales agreements with respect to shares of the fund. The service fee provides compensation for shareholder and administrative services rendered by ACIS, its affiliates or independent third party providers. Fees incurred under the plan during the six months ended April 30, 2008, are detailed in the Statement of Operations. RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, ACIS, and the corporation's transfer agent, American Century Services, LLC. The fund is eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. The fund has a securities lending agreement with JPMorgan Chase Bank (JPMCB). Prior to December 12, 2007, the fund had a bank line of credit agreement with JPMCB. JPMCB is a custodian of the fund and a wholly owned subsidiary of JPM. 3. INVESTMENT TRANSACTIONS Purchases and sales of investment securities, excluding short-term investments, for the six months ended April 30, 2008, were $40,154,857 and $124,302,327, respectively. 4. CAPITAL SHARE TRANSACTIONS Transactions in shares of the fund were as follows: Six months ended April 30, 2008 Year ended October 31, 2007 Shares Amount Shares Amount INVESTOR CLASS/SHARES AUTHORIZED 200,000,000 200,000,000 ============ ============ Sold 2,514,138 $ 18,751,782 8,504,945 $ 72,228,943 Issued in reinvestment of distributions 2,618,751 20,190,572 1,397,652 11,684,374 Redeemed (12,116,851) (90,387,633) (14,030,687) (120,606,257) ------------ ------------- ------------ ------------- (6,983,962) (51,445,279) (4,128,090) (36,692,940) ------------ ------------- ------------ ------------- INSTITUTIONAL CLASS/SHARES AUTHORIZED 15,000,000 15,000,000 ============ ============ Sold 16,259 122,900 252,381 2,101,512 Issued in reinvestment of distributions 155,264 1,195,532 112,065 936,867 Redeemed (1,115,605) (8,396,337) (947,069) (8,137,849) ------------ ------------- ------------ ------------- (944,082) (7,077,905) (582,623) (5,099,470) ------------ ------------- ------------ ------------- ADVISOR CLASS/SHARES AUTHORIZED 50,000,000 50,000,000 ============ ============ Sold 89,200 662,003 297,016 2,529,461 Issued in reinvestment of distributions 100,040 771,305 52,056 435,187 Redeemed (454,825) (3,426,368) (581,695) (4,990,567) ------------ ------------- ------------ ------------- (265,585) (1,993,060) (232,623) (2,025,919) ------------ ------------- ------------ ------------- Net increase (decrease) (8,193,629) $(60,516,244) (4,943,336) $(43,818,329) ============ ============= ============ ============ - ------ 17 5. SECURITIES LENDING As of April 30, 2008, securities in the fund valued at $3,599,372 were on loan through the lending agent, JPMCB, to certain approved borrowers. JPMCB receives and maintains collateral in the form of cash and/or acceptable securities as approved by ACIM. Cash collateral is invested in authorized investments by the lending agent in a pooled account. The value of cash collateral received at period end is disclosed in the Statement of Assets and Liabilities and investments made with the cash by the lending agent are listed in the Schedule of Investments. Any deficiencies or excess of collateral must be delivered or transferred by the member firms no later than the close of business on the next business day. The total market value of all collateral received, at this date, was $3,798,163. The fund's risks in securities lending are that the borrower may not provide additional collateral when required or return the securities when due. If the borrower defaults, receipt of the collateral by the fund may be delayed or limited. 6. BANK LINE OF CREDIT Effective December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, has a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the fund, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The fund may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The fund did not borrow from the line during the six months ended April 30, 2008. 7. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: Federal tax cost of investments $303,830,694 ============ Gross tax appreciation of investments $ 86,303,577 Gross tax depreciation of investments (23,590,570) ------------ Net tax appreciation (depreciation) of investments $ 62,713,007 ============ The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. 8. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 18 FINANCIAL HIGHLIGHTS Capital Value Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $8.78 $8.23 $7.15 $6.61 $5.86 $4.88 -------- -------- -------- -------- -------- ------- Income From Investment Operations Net Investment Income (Loss)(2) 0.07 0.13 0.12 0.10 0.09 0.08 Net Realized and Unrealized Gain (Loss) (1.02) 0.65 1.14 0.51 0.72 0.97 -------- -------- -------- -------- -------- ------- Total From Investment Operations (0.95) 0.78 1.26 0.61 0.81 1.05 -------- -------- -------- -------- -------- ------- Distributions From Net Investment Income (0.13) (0.12) (0.10) (0.07) (0.06) (0.07) From Net Realized Gains (0.34) (0.11) (0.08) -- -- -- -------- -------- -------- -------- -------- ------- Total Distributions (0.47) (0.23) (0.18) (0.07) (0.06) (0.07) -------- -------- -------- -------- -------- ------- Net Asset Value, End of Period $7.36 $8.78 $8.23 $7.15 $6.61 $5.86 ======== ======== ======== ======== ======== ======= TOTAL RETURN(3) (11.06)% 9.66% 18.03% 9.29% 13.94% 21.67% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.10%(4) 1.10% 1.10% 1.10% 1.10% 1.10% Ratio of Net Investment Income (Loss) to Average Net Assets 1.76%(4) 1.52% 1.55% 1.42% 1.44% 1.54% Portfolio Turnover Rate 10% 15% 16% 28% 15% 22% Net Assets, End of Period (in thousands) $335,513 $461,413 $466,803 $458,354 $255,504 $91,960 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 19 Capital Value Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $8.79 $8.24 $7.16 $6.62 $5.87 $4.88 -------- ------- ------- ------- ------- ------- Income From Investment Operations Net Investment Income (Loss)(2) 0.07 0.15 0.13 0.12 0.10 0.09 Net Realized and Unrealized Gain (Loss) (1.01) 0.65 1.15 0.51 0.72 0.97 -------- ------- ------- ------- ------- ------- Total From Investment Operations (0.94) 0.80 1.28 0.63 0.82 1.06 -------- ------- ------- ------- ------- ------- Distributions From Net Investment Income (0.15) (0.14) (0.12) (0.09) (0.07) (0.07) From Net Realized Gains (0.34) (0.11) (0.08) -- -- -- -------- ------- ------- ------- ------- ------- Total Distributions (0.49) (0.25) (0.20) (0.09) (0.07) (0.07) -------- ------- ------- ------- ------- ------- Net Asset Value, End of Period $7.36 $8.79 $8.24 $7.16 $6.62 $5.87 ======== ======= ======= ======= ======= ======= TOTAL RETURN(3) (10.97)% 9.88% 18.24% 9.50% 14.15% 22.07% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.90%(4) 0.90% 0.90% 0.90% 0.90% 0.90% Ratio of Net Investment Income (Loss) to Average Net Assets 1.96%(4) 1.72% 1.75% 1.62% 1.64% 1.74% Portfolio Turnover Rate 10% 15% 16% 28% 15% 22% Net Assets, End of Period (in thousands) $16,568 $28,077 $31,141 $37,523 $23,449 $11,244 (1) Six months ended April 30, 2008 (unaudited). (2) Computed using average shares outstanding throughout the period. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (4) Annualized. See Notes to Financial Statements. - ------ 20 Capital Value Advisor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006 2005 2004 2003(2) PER-SHARE DATA Net Asset Value, Beginning of Period $8.76 $8.21 $7.14 $6.60 $5.86 $5.19 -------- ------- ------- ------- ------ -------- Income From Investment Operations Net Investment Income (Loss)(3) 0.06 0.11 0.10 0.08 0.08 0.03 Net Realized and Unrealized Gain (Loss) (1.02) 0.65 1.13 0.52 0.71 0.64 -------- ------- ------- ------- ------ -------- Total From Investment Operations (0.96) 0.76 1.23 0.60 0.79 0.67 -------- ------- ------- ------- ------ -------- Distributions From Net Investment Income (0.11) (0.10) (0.08) (0.06) (0.05) -- From Net Realized Gains (0.34) (0.11) (0.08) -- -- -- -------- ------- ------- ------- ------ -------- Total Distributions (0.45) (0.21) (0.16) (0.06) (0.05) -- -------- ------- ------- ------- ------ -------- Net Asset Value, End of Period $7.35 $8.76 $8.21 $7.14 $6.60 $5.86 ======== ======= ======= ======= ====== ======== TOTAL RETURN(4) (11.19)% 9.40% 17.62% 9.04% 13.60% 12.91% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.35%(5) 1.35% 1.35% 1.35% 1.35% 1.35%(5) Ratio of Net Investment Income (Loss) to Average Net Assets 1.51%(5) 1.27% 1.30% 1.17% 1.19% 1.03%(5) Portfolio Turnover Rate 10% 15% 16% 28% 15% 22%(6) Net Assets, End of Period (in thousands) $11,530 $16,059 $16,973 $14,744 $8,023 $201 (1) Six months ended April 30, 2008 (unaudited). (2) May 14, 2003 (commencement of sale) through October 31, 2003. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Portfolio turnover is calculated at the fund level. Percentage indicated was calculated for the year ended October 31, 2003. See Notes to Financial Statements. - ------ 21 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the fund's investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the fund. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The fund files its complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The fund's Form N-Q is available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The fund also makes its complete schedule of portfolio holdings for the most recent quarter of its fiscal year available on its website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 22 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 1000® GROWTH INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 1000® VALUE INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 2000® INDEX is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® GROWTH INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 2000® VALUE INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® GROWTH INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL MIDCAP® VALUE INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The S&P 500 INDEX is a market value-weighted index of the stocks of 500 publicly traded U.S. companies chosen for market size, liquidity, and industry group representation that are considered to be leading firms in dominant industries. Each stock's weight in the index is proportionate to its market value. Created by Standard & Poor's, it is considered to be a broad measure of U.S. stock market performance. - ------ 23 NOTES - ------ 24 [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE . . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE . . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS. . . . . . . . . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES . . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF . . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60499N
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS NT GROWTH FUND NT VISTA(SM) FUND PRESIDENT'S LETTER [photo of Jonathan Thomas] JONATHAN THOMAS Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century® NT Growth and NT Vista funds for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns . . . . . . . . . . . . . . . . . . . . . . 2 NT GROWTH Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries. . . . . . . . . . . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 6 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 7 NT VISTA Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Five Industries. . . . . . . . . . . . . . . . . . . . . . . . . 13 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 13 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 14 Shareholder Fee Examples. . . . . . . . . . . . . . . . . . . . . . . 17 FINANCIAL STATEMENTS Statement of Assets and Liabilities . . . . . . . . . . . . . . . . . 19 Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . 20 Statement of Changes in Net Assets. . . . . . . . . . . . . . . . . . 21 Notes to Financial Statements . . . . . . . . . . . . . . . . . . . . 22 Financial Highlights. . . . . . . . . . . . . . . . . . . . . . . . . 26 OTHER INFORMATION Additional Information. . . . . . . . . . . . . . . . . . . . . . . . 28 Index Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 29 The opinions expressed in the Market Perspective and each of the Portfolio Commentaries reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of chief investment officer] Steve Lurito, Chief Investment Officer, U.S. Growth Equity VOLATILITY UP, STOCKS DOWN The six months ended April 30, 2008 saw stocks produce negative returns as market volatility surged in the wake of the subprime credit crisis. In terms of the economy, tighter credit and the slumping housing market hurt consumer spending and confidence, leading many economists to suggest we're already in recession. Meanwhile, mounting losses hurt the banks, brokers, and other big institutional players important for the functioning of the financial markets. Facing dual economic and financial crises, the Federal Reserve (the Fed) took a series of extraordinary steps, slashing interest rates and acting as a lender of last resort not only for banks, but also major brokers. That helped stocks rebound, with many analysts suggesting that the mid-March buy-out of investment bank Bear Stearns -- in a deal arranged by the Fed -- put a floor under the market. RETURNS BY SIZE, STYLE MIXED Performance by size and style was mixed (see the accompanying table), reflecting the volatile trading during the period, when corporate earnings estimates were revised down sharply. Looking at returns by sector, energy shares were the only segment to produce positive results during the six months. At the other end of the spectrum, credit-related losses took a big bite out of earnings for financials stocks, which performed worst. Consumer discretionary shares also lagged badly, as did information technology stocks, which suffered from poor pricing and demand trends for chips and some consumer-related tech goods. OPPORTUNITY AMID VOLATILITY Despite the uncertainty surrounding the economy, we think growth-oriented stocks can perform well relative to value as proven earnings growth becomes scarce during economic slowdowns. And while we don't see an end to market volatility anytime soon, we view this dynamic as a natural part of the investing cycle -- and one that presents us with opportunities to build positions in what we believe are high-quality companies trading at attractive prices. Indeed, investors should rest assured that we're finding no shortage of companies demonstrating sustained earnings growth and business improvement. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% *Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE NT Growth Total Returns as of April 30, 2008 Average Annual Returns Since Inception 6 months(1) 1 year Inception Date INSTITUTIONAL CLASS -6.02% 7.51% 10.30% 5/12/06 RUSSELL 1000 GROWTH INDEX(2) -9.28% -0.23% 6.83% -- (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. -- A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. Lipper Fund Performance -- Performance data is total return and is preliminary and subject to revision. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 3 NT Growth Growth of $10,000 Over Life of Class $10,000 investment made May 12, 2006
One-Year Returns Over Life of Class Periods ended April 30 2007* 2008 Institutional Class 12.83% 7.51% Russell 1000 Growth Index 14.14% -0.23% *From 5/12/06, the Institutional Class's inception date. Not annualized. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 4 PORTFOLIO COMMENTARY NT Growth Portfolio Managers: Greg Woodhams and Prescott LeGard PERFORMANCE SUMMARY NT Growth returned -6.02%* during the six months ended April 30, 2008. By comparison, the Russell 1000 Growth Index and Lipper Large-Cap Growth Funds category average returned -9.28% and -10.15%**, respectively. Better measures of the portfolio's performance are its longer-term results compared with the index, which can be seen on page 3. Overall, performance was driven by holdings in the energy sector; materials and consumer staples also made positive contributions. Information technology holdings were the leading detractors. In terms of NT Growth's performance relative to the Russell 1000 Growth Index, outperformance was driven by stock selection among health care and consumer discretionary stocks; holdings in the consumer staples, financials, and energy sectors were other notable contributors. Stock picks in information technology detracted most from relative results. HEALTH CARE LED CONTRIBUTORS Health care stocks contributed most to the portfolio's return relative to the benchmark. Performance was driven by positioning in the pharmaceutical industry. In particular, NT Growth had no exposure to Merck, and managers eliminated Schering-Plough at the end of 2007 after sizable gains. This helped relative results after both stocks suffered in March from questions about the efficacy of a jointly marketed cholesterol drug. Positioning in health care equipment & supplies firms was another source of relative strength. The leading contributor to return in this space was Becton Dickinson, which benefited from increased usage around the world of its safety devices that reduce accidents and infection among patients and caregivers. CONSUMER DISCRETIONARY HELPED In the consumer discretionary sector, outperformance was a result of stock selection in the specialty retail and internet & catalog retailing segments. It also helped to underweight stocks in the hotels, restaurants & leisure category. Key contributions in the sector came from specialty retailers Urban Outfitters and The TJX Companies. Internet travel portal priceline.com was another leading contributor, helped by the acquisition of overseas vacation properties and growth in its international business. Top Ten Holdings as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 Apple Inc. 3.4% 4.0% Honeywell International Inc. 2.5% 1.2% QUALCOMM Inc. 2.5% 0.9% Emerson Electric Co. 2.4% 1.9% Becton, Dickinson & Co. 2.3% 2.3% Microsoft Corp. 2.2% 3.7% Apache Corp. 2.2% 1.9% Coca-Cola Co. (The) 2.2% 2.6% BorgWarner, Inc. 2.2% 2.0% Devon Energy Corp. 2.2% 1.8% *Total returns for periods less than one year are not annualized. **The Lipper Large-Cap Growth Funds category average return for the one-year period ended April 30, 2008 was 1.73%. - ------ 5 NT Growth OTHER KEY CONTRIBUTORS Three of the five largest contributors to portfolio performance were oil & gas exploration and production firms Devon Energy, Apache, and XTO Energy. These companies benefited from surging oil prices and reserve growth in the U.S. and overseas. These shares also saw demand from investors who wanted exposure to the energy sector but preferred to avoid the big, integrated firms that are less closely tied to the price of oil and are seeing declining margins in their refining businesses. IT, INDUSTRIALS DETRACTED Stock selection among information technology stocks detracted most from relative return, led by holdings in the software, internet software & services, and IT services industries. Indeed, the sector was home to the five largest individual detractors from relative performance, led by enterprise software firm VMWare. This overweight position was eliminated after the firm gave a surprisingly poor profit forecast. The number-two detractor was IBM, which reported good results and bought back stock during the period. The portfolio had no exposure to the stock. With the exception of utilities (a tiny portion of the fund and index), industrials was the only other sector to detract from relative performance, as it hurt to be significantly underweight the road & rail and air freight industries. The leading detractor in the sector was an overweight position in Continental Airlines, as investors worried about the effects of rising fuel costs and a slowing economy. We eliminated the position during the period. OUTLOOK The investment process focuses on large companies exhibiting sustainable improvement in their businesses. We believe that owning such companies will generate outperformance over time versus the Russell 1000 Growth Index and the other funds in the large-growth peer group. As a result, the portfolio's sector and industry selection are primarily a result of identifying what we believe to be superior individual securities. As of April 30, 2008, we found opportunity in the health care sector, the portfolio's largest overweight position. The most notable sector underweight was in information technology shares. Top Five Industries as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 Health Care Equipment & Supplies 8.2% 8.8% Communications Equipment 8.0% 7.2% Aerospace & Defense 6.4% 3.1% Oil, Gas & Consumable Fuels 6.4% 7.1% Semiconductors & Semiconductor Equipment 5.7% 3.4% Types of Investments in Portfolio % of % of net assets net assets as of as of 4/30/08 10/31/07 Domestic Common Stocks 93.1% 94.9% Foreign Common Stocks(1) 6.3% 4.3% TOTAL COMMON STOCKS 99.4% 99.2% Temporary Cash Investments 0.8% -- Other Assets and Liabilities(2) (0.2)% 0.8% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. (2) Includes securities lending collateral and other assets and liabilities. - ------ 6 SCHEDULE OF INVESTMENTS NT Growth APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 99.4% AEROSPACE & DEFENSE -- 6.4% 41,400 Honeywell International Inc. $ 2,459,160 29,400 Raytheon Co. 1,880,718 26,100 United Technologies Corp. 1,891,467 ----------- 6,231,345 ----------- AUTO COMPONENTS -- 2.2% 42,500 BorgWarner, Inc. 2,088,875 ----------- BEVERAGES -- 3.9% 36,200 Coca-Cola Co. (The) 2,131,094 24,600 PepsiCo, Inc. 1,685,838 ----------- 3,816,932 ----------- BIOTECHNOLOGY -- 1.4% 6,300 Genentech, Inc.(1) 429,660 17,900 Gilead Sciences, Inc.(1) 926,504 ----------- 1,356,164 ----------- BUILDING PRODUCTS -- 0.3% 13,700 Masco Corp. 249,477 ----------- CAPITAL MARKETS -- 3.6% 61,000 Invesco Ltd. 1,564,650 13,500 Northern Trust Corp. 1,000,485 27,900 Waddell & Reed Financial, Inc. Cl A 944,694 ----------- 3,509,829 ----------- CHEMICALS -- 1.7% 14,800 Monsanto Co. 1,687,496 ----------- COMMUNICATIONS EQUIPMENT -- 8.0% 40,600 ADC Telecommunications, Inc.(1) 569,212 10,700 Ciena Corp.(1) 361,767 58,400 Cisco Systems Inc.(1) 1,497,376 59,400 Corning Inc. 1,586,574 68,900 JDS Uniphase Corp.(1) 985,959 56,400 QUALCOMM Inc. 2,435,916 2,900 Research In Motion Ltd.(1) 352,727 ----------- 7,789,531 ----------- COMPUTERS & PERIPHERALS -- 4.6% 18,800 Apple Inc.(1) 3,270,260 56,800 Dell Inc.(1) 1,058,184 8,000 EMC Corp.(1) 123,200 ----------- 4,451,644 ----------- DIVERSIFIED -- 0.5% 8,800 iShares Russell 1000 Growth Index Fund 505,648 ----------- Shares Value DIVERSIFIED FINANCIAL SERVICES -- 1.2% 1,200 CME Group Inc. $ 548,940 3,900 IntercontinentalExchange Inc.(1) 605,085 ----------- 1,154,025 ----------- ELECTRIC UTILITIES -- 0.5% 6,900 FPL Group, Inc. 457,401 ----------- ELECTRICAL EQUIPMENT -- 4.0% 29,200 Cooper Industries, Ltd. Cl A 1,237,788 44,200 Emerson Electric Co. 2,309,892 1,300 First Solar Inc.(1) 379,587 ----------- 3,927,267 ----------- ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.8% 76,100 Flextronics International Ltd.(1) 790,679 ----------- ENERGY EQUIPMENT & SERVICES -- 3.0% 9,400 Helmerich & Payne, Inc. 505,250 10,500 Schlumberger Ltd. 1,055,775 9,200 Transocean Inc.(1) 1,356,632 ----------- 2,917,657 ----------- FOOD & STAPLES RETAILING -- 4.0% 25,000 Costco Wholesale Corp. 1,781,250 35,400 Wal-Mart Stores, Inc. 2,052,492 ----------- 3,833,742 ----------- FOOD PRODUCTS -- 0.8% 1,600 Nestle SA ORD 767,716 ----------- HEALTH CARE EQUIPMENT & SUPPLIES -- 8.2% 25,800 Baxter International Inc. 1,607,856 24,500 Becton, Dickinson & Co. 2,190,300 10,900 C.R. Bard, Inc. 1,026,453 24,700 DENTSPLY International Inc. 960,089 5,100 Gen-Probe Inc.(1) 287,436 4,300 Idexx Laboratories, Inc.(1) 228,760 2,200 Intuitive Surgical Inc.(1) 636,372 20,100 Medtronic, Inc. 978,468 ----------- 7,915,734 ----------- HEALTH CARE PROVIDERS & SERVICES -- 0.9% 8,100 Laboratory Corp. of America Holdings(1) 612,522 9,000 VCA Antech Inc.(1) 291,330 ----------- 903,852 ----------- - ------ 7 NT Growth Shares Value HOTELS, RESTAURANTS & LEISURE -- 1.3% 36,600 Darden Restaurants, Inc. $ 1,302,228 ----------- HOUSEHOLD DURABLES -- 0.8% 14,000 KB Home(2) 315,000 6,000 Mohawk Industries Inc.(1)(2) 457,140 ----------- 772,140 ----------- HOUSEHOLD PRODUCTS -- 1.3% 18,500 Procter & Gamble Co. (The) 1,240,425 ----------- INDUSTRIAL CONGLOMERATES -- 0.4% 10,600 General Electric Co. 346,620 ----------- INSURANCE -- 1.1% 19,700 Chubb Corp. 1,043,510 ----------- INTERNET & CATALOG RETAIL -- 0.5% 4,000 priceline.com Inc.(1)(2) 510,560 ----------- INTERNET SOFTWARE & SERVICES -- 0.9% 1,500 Google Inc. Cl A(1) 861,435 ----------- IT SERVICES -- 1.3% 6,200 Global Payments Inc. 274,412 11,172 Visa Inc. Cl A(1) 932,303 ----------- 1,206,715 ----------- LIFE SCIENCES TOOLS & SERVICES -- 2.3% 3,000 Illumina, Inc.(1) 233,670 11,400 QIAGEN N.V.(1) 253,194 30,500 Thermo Fisher Scientific Inc.(1) 1,765,035 ----------- 2,251,899 ----------- MACHINERY -- 3.0% 4,600 Caterpillar Inc. 376,648 18,500 Eaton Corp. 1,625,040 8,857 Valmont Industries, Inc. 872,060 ----------- 2,873,748 ----------- MEDIA -- 1.9% 47,700 Viacom Inc. Cl B(1) 1,833,588 ----------- METALS & MINING -- 1.6% 13,600 Freeport-McMoRan Copper & Gold, Inc. 1,547,000 ----------- MULTILINE RETAIL -- 1.1% 48,500 Family Dollar Stores, Inc. 1,037,900 ----------- OIL, GAS & CONSUMABLE FUELS -- 6.4% 16,000 Apache Corp. 2,154,880 18,400 Devon Energy Corp. 2,086,560 1,900 EOG Resources Inc. 247,912 27,850 XTO Energy Inc. 1,722,801 ----------- 6,212,153 ----------- Shares Value PHARMACEUTICALS -- 3.3% 34,100 Allergan, Inc. $ 1,922,217 18,900 Novo Nordisk AS B Shares ORD(2) 1,302,984 ----------- 3,225,201 ----------- REAL ESTATE INVESTMENT TRUSTS (REITS) -- 0.6% 5,200 Digital Realty Trust Inc. 201,500 10,800 Weingarten Realty Investors 398,412 ----------- 599,912 ----------- ROAD & RAIL -- 0.4% 2,600 Union Pacific Corp. 377,494 ----------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 5.7% 26,100 Altera Corp. 555,408 20,800 Applied Materials, Inc. 388,128 81,300 Intel Corp. 1,809,738 47,700 Linear Technology Corp. 1,667,592 7,100 MEMC Electronic Materials Inc.(1) 447,087 24,800 Xilinx, Inc. 614,296 ----------- 5,482,249 ----------- SOFTWARE -- 4.3% 8,500 Electronic Arts Inc.(1) 437,495 76,100 Microsoft Corp. 2,170,372 38,400 Oracle Corp.(1) 800,640 12,100 Salesforce.com Inc.(1) 807,433 ----------- 4,215,940 ----------- SPECIALTY RETAIL -- 3.8% 16,300 Advance Auto Parts, Inc. 565,284 51,200 Lowe's Companies, Inc. 1,289,728 11,500 TJX Companies, Inc. (The) 370,530 43,400 Urban Outfitters Inc.(1) 1,486,450 ----------- 3,711,992 ----------- WIRELESS TELECOMMUNICATION SERVICES -- 1.4% 32,100 American Tower Corp. Cl A(1) 1,393,782 ----------- TOTAL COMMON STOCKS (Cost $86,639,995) 96,401,505 ----------- - ------ 8 NT Growth Value Temporary Cash Investments -- 0.8% Repurchase Agreement, Bank of America Securities, LLC, (collateralized by various U.S. Treasury obligations, 0.625%, 4/15/13, valued at $816,498), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $800,043) (Cost $800,000) $ 800,000 ----------- Temporary Cash Investments -- Securities Lending Collateral(3) -- 1.5% Repurchase Agreement, Barclays Capital Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.98%, dated 4/30/08, due 5/1/08 (Delivery value $300,093) 300,076 Repurchase Agreement, BNP Paribas Securities Corp., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.99%, dated 4/30/08, due 5/1/08 (Delivery value $285,016) 285,000 Repurchase Agreement, Deutsche Bank Securities Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $285,016) 285,000 Value Repurchase Agreement, Lehman Brothers Inc. / Lehman Brothers Commercial Paper Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 2.39%, dated 4/30/08, due 5/1/08 (Delivery value $285,019) $ 285,000 Repurchase Agreement, Morgan Stanley & Co. Inc., (collateralized by various U.S. Government Agency obligations in a pooled account at the lending agent), 1.97%, dated 4/30/08, due 5/1/08 (Delivery value $285,016) 285,000 ----------- TOTAL TEMPORARY CASH INVESTMENTS -- SECURITIES LENDING COLLATERAL (Cost $1,440,076) 1,440,076 ----------- TOTAL INVESTMENT SECURITIES -- 101.7% (Cost $88,880,071) 98,641,581 ----------- OTHER ASSETS AND LIABILITIES -- (1.7)% (1,656,316) ----------- TOTAL NET ASSETS -- 100.0% $96,985,265 =========== Forward Foreign Currency Exchange Contracts Settlement Unrealized Contracts to Sell Date Value Gain (Loss) 549,920 CHF for USD 5/30/08 $ 531,140 $ 1,455 4,074,840 DKK for USD 5/30/08 852,844 395 ---------- ---------- $1,383,984 $ 1,850 ========== ========== (Value on Settlement Date $1,385,834) Notes to Schedule of Investments CHF = Swiss Franc DKK = Danish Krone ORD = Foreign Ordinary Share USD = United States Dollar (1) Non-income producing. (2) Security, or a portion thereof, was on loan as of April 30, 2008. (3) Investments represent purchases made by the lending agent with cash collateral received through securities lending transactions. See Notes to Financial Statements. - ------ 9 PERFORMANCE NT Vista Total Returns as of April 30, 2008 Average Annual Returns Since Inception 6 months(1) 1 year Inception Date INSTITUTIONAL CLASS -12.25% 11.21% 8.66% 5/12/06 RUSSELL MIDCAP GROWTH INDEX(2) -8.44% -1.93% 5.20% -- (1) Total returns for periods less than one year are not annualized. (2) Data provided by Lipper Inc. - A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing involves special risks, such as political instability and currency fluctuations. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 10 NT Vista Growth of $10,000 Over Life of Class $10,000 investment made May 12, 2006
One-Year Returns Over Life of Class Periods ended April 30 2007* 2008 Institutional Class 5.90% 11.21% Russell Midcap Growth Index 12.66% -1.93% *From 5/12/06, the Institutional Class's inception date. Not annualized. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. International investing involves special risks, such as political instability and currency fluctuations. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the index are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the index do not. - ------ 11 PORTFOLIO COMMENTARY NT Vista Portfolio Managers: Glenn Fogle and Brad Eixmann In February, David Hollond left the NT Vista team to focus on the American Century Giftrust, Heritage and VP Capital Appreciation funds. PERFORMANCE SUMMARY NT Vista returned -12.25%* for the six months ended April 30, 2008, lagging the -8.44% return of its benchmark, the Russell Midcap Growth Index. As discussed in the Market Perspective on page 2, equity markets generally declined during the reporting period, as the subprime-mortgage-driven credit crisis spread to other areas of the economy, and rising energy and commodity prices increased inflation concerns. In this environment, mid-cap stocks outpaced their large- and small-cap counterparts, and mid-cap growth-oriented shares outperformed mid-cap value stocks. Within the portfolio, effective security selection and an overweight allocation to the materials sector contributed positively to the portfolio's relative performance. But it wasn't enough to overcome the detrimental effect of individual security selection within the energy, information technology, and consumer discretionary sectors and an underweight position in energy. NT Vista also maintained a significant allocation to foreign holdings. During the reporting period, these holdings detracted from portfolio returns. CONSUMER DISCRETIONARY LAGGED The consumer discretionary group also weighed on NT Vista's performance. The portfolio has benefited in the past from a stake in the hotels, restaurants and leisure group, where we focused on several casinos and makers of slot machines. During the reporting period, though, this group -- including holding Las Vegas Sands -- suffered traffic declines and detracted from performance. INDUSTRIALS CONTRIBUTED, BUT CERTAIN HOLDINGS LAGGED In the industrials sector, the portfolio held an overweight position in machinery company Flowserve. A maker of pumps, seals, and valves to end users in the oil and gas, power, chemicals, and water industries, Flowserve was the largest contributor to portfolio performance for the reporting period as its share price gained 58%. Elsewhere within the industrials sector, we maintained an overweight position in the aerospace and defense industry. Holdings within this group have contributed significantly to portfolio gains in the past, benefiting from a replacement cycle and expanding orders in global aviation. But during the reporting period, this group lost Top Ten Holdings as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 Owens-Illinois Inc. 5.4% 2.2% Flowserve Corp. 3.8% 1.2% Thermo Fisher Scientific Inc. 3.0% 3.4% Monsanto Co. 2.8% 2.1% SBA Communications Corp. Cl A 2.5% 2.4% MasterCard Inc. Cl A 2.3% 0.9% AGCO Corp. 2.3% 2.5% Medco Health Solutions Inc. 2.2% 2.1% Express Scripts, Inc. 2.2% 2.9% Aflac Inc. 2.2% -- *Total returns for periods less than one year are not annualized. - ------ 12 NT Vista ground amid market volatility and investor nervousness. BE Aerospace and Precision Castparts, in particular, declined 19% and 21%, respectively, and detracted from portfolio performance. MATERIALS CONTRIBUTED A higher standard of living in emerging-market countries, lower availability of farmland, and greater global focus on biofuels translated into growing global demand for agriculture. This increased demand in turn led to a corresponding rise in commodities prices that benefited select chemicals companies within the materials sector during the reporting period. Notably, Monsanto -- a producer of genetically modified corn seed -- benefited from escalating corn prices. Not a constituent of the benchmark, Monsanto was a substantial contributor to relative performance. Also within the materials sector, fertilizer company Mosaic was a contributor to absolute and relative portfolio returns as the company continued to benefit from secularly higher demand in the fertilizer market. Owens-Illinois -- NT Vista's largest holding -- was a meaningful positive contributor to performance, as the packaging giant was one of the rare companies to sharply exceed earnings estimates in the reporting period. For the first quarter of 2008 in particular, the company's earnings more than tripled as it benefited from increased prices, an improved product mix, and manufacturing efficiencies. OUTLOOK Our investment process focuses on medium-sized and smaller companies with accelerating earnings growth rates and share-price momentum. We believe that active investing in such companies will generate outperformance over time compared with the Russell Midcap Growth Index. Despite the volatility and the market's tilt away from momentum-style investing during the course of the reporting period, we find the current environment accommodating to our disciplined, consistent style. Our process of identifying companies with accelerating growth and price momentum continues to identify opportunities, particularly among companies with exposure to commodities in the global economy. Top Five Industries as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 Semiconductors & Semiconductor Equipment 7.8% 6.2% Machinery 7.4% 5.4% Chemicals 6.0% 3.8% Oil, Gas & Consumable Fuels 5.9% -- Containers & Packaging 5.4% 2.2% Types of Investments in Portfolio % of % of net assets net assets as of as of 4/30/08 10/31/07 Domestic Common Stocks 82.7% 88.1% Foreign Common Stocks(1) 14.4% 10.2% TOTAL COMMON STOCKS 97.1% 98.3% Temporary Cash Investments 2.0% -- Other Assets and Liabilities 0.9% 1.7% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. - ------ 13 SCHEDULE OF INVESTMENTS NT Vista APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 97.1% AEROSPACE & DEFENSE -- 3.3% 4,100 Alliant Techsystems Inc.(1) $ 450,016 20,321 BE Aerospace, Inc.(1) 820,156 1,991 Precision Castparts Corp. 234,062 ----------- 1,504,234 ----------- AUTO COMPONENTS -- 0.8% 23,300 ArvinMeritor, Inc. 348,102 ----------- BIOTECHNOLOGY -- 3.3% 8,000 Alexion Pharmaceuticals Inc.(1) 563,040 16,700 BioMarin Pharmaceutical Inc.(1) 608,882 9,100 CSL Ltd. ORD 341,504 ----------- 1,513,426 ----------- CAPITAL MARKETS -- 2.0% 2,300 BlackRock, Inc. 464,117 5,800 FCStone Group, Inc.(1) 240,236 3,000 Northern Trust Corp. 222,330 ----------- 926,683 ----------- CHEMICALS -- 6.0% 3,946 Intrepid Potash, Inc.(1) 187,396 11,070 Monsanto Co. 1,262,200 3,400 Mosaic Co. (The)(1) 416,534 2,853 Syngenta AG ORD 852,485 ----------- 2,718,615 ----------- COMMERCIAL BANKS -- 0.5% 2,800 Credicorp Ltd. 225,008 ----------- COMMERCIAL SERVICES & SUPPLIES -- 1.6% 11,300 FTI Consulting, Inc.(1) 723,200 ----------- COMMUNICATIONS EQUIPMENT -- 0.5% 16,200 JDS Uniphase Corp.(1) 231,822 ----------- COMPUTERS & PERIPHERALS -- 0.7% 1,700 Apple Inc.(1) 295,715 ----------- CONSTRUCTION & ENGINEERING -- 3.7% 14,740 Foster Wheeler Ltd.(1) 938,791 20,106 Quanta Services, Inc.(1) 533,613 4,400 Shaw Group Inc. (The)(1) 217,448 ----------- 1,689,852 ----------- CONTAINERS & PACKAGING -- 5.4% 44,100 Owens-Illinois Inc.(1) 2,432,116 ----------- Shares Value DIVERSIFIED CONSUMER SERVICES -- 0.9% 5,200 DeVry Inc. $ 296,400 1,500 ITT Educational Services Inc.(1) 114,990 ----------- 411,390 ----------- DIVERSIFIED FINANCIAL SERVICES -- 0.2% 2,052 Nasdaq Stock Market, Inc. (The)(1) 74,795 ----------- ELECTRICAL EQUIPMENT -- 3.8% 2,800 First Solar Inc.(1) 817,572 18,300 JA Solar Holdings Co., Ltd. ADR(1) 439,383 4,100 Vestas Wind Systems AS ORD(1) 450,191 ----------- 1,707,146 ----------- ELECTRONIC EQUIPMENT & INSTRUMENTS -- 0.2% 2,435 Molex Inc. 69,105 ----------- ENERGY EQUIPMENT & SERVICES -- 4.3% 1,706 Core Laboratories N.V.(1) 213,728 7,696 Dresser-Rand Group Inc.(1) 281,443 4,800 Helmerich & Payne, Inc. 258,000 11,700 Patterson-UTI Energy Inc. 326,898 11,000 Weatherford International Ltd.(1) 887,369 ----------- 1,967,438 ----------- HEALTH CARE PROVIDERS & SERVICES -- 4.9% 5,900 Community Health Systems Inc.(1) 221,427 14,432 Express Scripts, Inc.(1) 1,010,529 20,400 Medco Health Solutions Inc.(1) 1,010,616 ----------- 2,242,572 ----------- HOTELS, RESTAURANTS & LEISURE -- 0.9% 2,486 Panera Bread Co. Cl A(1) 129,918 7,820 WMS Industries Inc.(1) 283,006 ----------- 412,924 ----------- HOUSEHOLD DURABLES -- 0.5% 6,100 Tupperware Brands Corp. 240,340 ----------- INDUSTRIAL CONGLOMERATES -- 1.0% 8,492 McDermott International, Inc.(1) 455,001 ----------- - ------ 14 NT Vista Shares Value INSURANCE -- 2.2% 15,000 Aflac Inc. $ 1,000,050 ----------- INTERNET & CATALOG RETAIL -- 1.0% 3,500 priceline.com Inc.(1) 446,740 ----------- INTERNET SOFTWARE & SERVICES -- 1.2% 6,700 Mercadolibre Inc.(1) 338,886 6,000 VeriSign, Inc.(1) 216,300 ----------- 555,186 ----------- IT SERVICES -- 2.3% 3,800 MasterCard Inc. Cl A 1,057,008 ----------- LIFE SCIENCES TOOLS & SERVICES -- 5.2% 2,700 Covance Inc.(1) 226,233 5,000 Invitrogen Corp.(1) 467,850 11,800 Parexel International Corp.(1) 299,720 23,400 Thermo Fisher Scientific Inc.(1) 1,354,158 ----------- 2,347,961 ----------- MACHINERY -- 7.4% 17,514 AGCO Corp.(1) 1,053,117 4,600 Bucyrus International, Inc. 579,278 14,000 Flowserve Corp. 1,737,260 ----------- 3,369,655 ----------- METALS & MINING -- 3.1% 4,500 Agnico-Eagle Mines Ltd. 281,025 5,900 Cia Siderurgica Nacional SA ADR 254,585 2,800 Cleveland-Cliffs Inc. 449,120 1,500 Mechel OAO ADR(1) 218,700 9,600 Timminco Ltd. ORD(1) 185,997 ----------- 1,389,427 ----------- OIL, GAS & CONSUMABLE FUELS -- 5.9% 12,800 Alpha Natural Resources, Inc.(1) 622,720 7,800 Consol Energy Inc. 631,488 3,700 Foundation Coal Holdings, Inc. 221,926 9,700 Quicksilver Resources Inc.(1) 402,453 10,200 Southwestern Energy Co.(1) 431,562 4,600 Ultra Petroleum Corp.(1) 382,122 ----------- 2,692,271 ----------- PERSONAL PRODUCTS -- 1.4% 8,300 Avon Products, Inc. 323,866 7,500 Herbalife Ltd. 328,350 ----------- 652,216 ----------- Shares Value ROAD & RAIL -- 2.5% 8,900 CSX Corp. $ 560,255 7,600 Kansas City Southern Industries, Inc.(1) 342,608 1,700 Union Pacific Corp. 246,823 ----------- 1,149,686 ----------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 7.8% 15,500 Altera Corp. 329,840 10,500 Applied Materials, Inc. 195,930 8,500 Broadcom Corp. Cl A(1) 220,660 7,700 Intersil Corp. Cl A 205,744 6,700 Linear Technology Corp. 234,232 12,000 MEMC Electronic Materials Inc.(1) 755,641 19,500 Microsemi Corp.(1) 477,750 44,500 PMC-Sierra, Inc.(1) 345,765 34,200 Teradyne, Inc.(1) 454,518 13,300 Xilinx, Inc. 329,441 ----------- 3,549,521 ----------- SOFTWARE -- 3.3% 32,000 Activision, Inc.(1) 865,600 10,803 Informatica Corp.(1) 172,416 6,700 McAfee Inc.(1) 222,775 400 Nintendo Co., Ltd. ORD 219,626 ----------- 1,480,417 ----------- SPECIALTY RETAIL -- 5.2% 8,900 Aeropostale Inc.(1) 282,931 15,700 GameStop Corp. Cl A(1) 864,128 5,300 Guess?, Inc. 202,884 4,700 J. Crew Group, Inc.(1) 223,250 3,090 Tractor Supply, Co.(1) 109,880 20,200 Urban Outfitters Inc.(1) 691,850 ----------- 2,374,923 ----------- TEXTILES, APPAREL & LUXURY GOODS -- 0.2% 570 Deckers Outdoor Corp.(1) 78,700 ----------- WIRELESS TELECOMMUNICATION SERVICES -- 3.9% 11,700 MetroPCS Communications, Inc.(1) 229,788 9,364 NII Holdings, Inc.(1) 428,309 34,702 SBA Communications Corp. Cl A(1) 1,122,263 ----------- 1,780,360 ----------- TOTAL COMMON STOCKS (Cost $35,539,058) 44,113,605 ----------- - ------ 15 NT Vista Value Temporary Cash Investments -- 2.0% Repurchase Agreement, Bank of America Securities, LLC, (collateralized by various U.S. Treasury obligations, 0.625%, 4/15/13, valued at $918,561), in a joint trading account at 1.92%, dated 4/30/08, due 5/1/08 (Delivery value $900,048) (Cost $900,000) $ 900,000 ----------- TOTAL INVESTMENT SECURITIES -- 99.1% (Cost $36,439,058) $45,013,605 ----------- OTHER ASSETS AND LIABILITIES -- 0.9% 417,393 ----------- TOTAL NET ASSETS -- 100.0% $45,430,998 =========== Forward Foreign Currency Exchange Contracts Settlement Unrealized Contracts to Sell Date Value Gain (Loss) 215,670 AUD for USD 5/30/08 $ 202,661 $ (1,020) 147,840 CAD for USD 5/30/08 146,700 (1,296) 695,561 CHF for USD 5/30/08 671,807 1,885 1,685,920 DKK for USD 5/30/08 352,855 170 11,340,000 JPY for USD 5/30/08 109,240 (90) ---------- ---------- $1,483,263 $ (351) ========== ========== (Value on Settlement Date $1,482,912) Notes to Schedule of Investments ADR = American Depositary Receipt AUD = Australian Dollar CAD = Canadian Dollar CHF = Swiss Franc DKK = Danish Krone JPY = Japanese Yen ORD = Foreign Ordinary Share USD = United States Dollar (1) Non-income producing. See Notes to Financial Statements. - ------ 16 SHAREHOLDER FEE EXAMPLES (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 17 Ending Expenses Paid Beginning Account During Period* Account Value Value 11/1/07 - Annualized Expense 11/1/07 4/30/08 4/30/08 Ratio* NT Growth -- Institutional Class Actual $1,000 $939.80 $3.86 0.80% Hypothetical $1,000 $1,020.89 $4.02 0.80% NT Vista -- Institutional Class Actual $1,000 $877.50 $3.78 0.81% Hypothetical $1,000 $1,020.84 $4.07 0.81% *Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. - ------ 18 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) NT Growth NT Vista ASSETS Investment securities, at value (cost of $87,439,995 and $36,439,058, respectively) -- including $1,401,099 and $-- of securities on loan, respectively $97,201,505 $45,013,605 Investments made with cash collateral received for securities on loan, at value (cost of $1,440,076 and $--, respectively) 1,440,076 -- ----------- ----------- Total investment securities, at value (cost of $88,880,071 and $36,439,058, respectively) 98,641,581 45,013,605 Cash 37,415 87,030 Receivable for investments sold 1,413,592 1,327,879 Receivable for forward foreign currency exchange contracts 1,850 2,055 Dividends and interest receivable 46,311 22,249 ----------- ----------- 100,140,749 46,452,818 ----------- ----------- LIABILITIES Payable for collateral received for securities on loan 1,440,076 -- Payable for investments purchased 1,654,366 990,555 Payable for forward foreign currency exchange contracts -- 2,406 Accrued management fees 61,042 28,859 ----------- ----------- 3,155,484 1,021,820 ----------- ----------- NET ASSETS $96,985,265 $45,430,998 =========== =========== INSTITUTIONAL CLASS CAPITAL SHARES, $0.01 PAR VALUE Authorized 100,000,000 100,000,000 =========== =========== Outstanding 8,417,265 3,867,317 =========== =========== NET ASSET VALUE PER SHARE $11.52 $11.75 =========== =========== NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $87,208,509 $37,100,328 Accumulated undistributed net investment income (loss) 112,284 (69,336) Accumulated net realized loss on investment and foreign currency transactions (99,417) (173,556) Net unrealized appreciation on investments and translation of assets and liabilities in foreign currencies 9,763,889 8,573,562 ----------- ----------- $96,985,265 $45,430,998 =========== =========== See Notes to Financial Statements. - ------ 19 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) NT Growth NT Vista INVESTMENT INCOME (LOSS) INCOME: Dividends (net of foreign taxes withheld of $5,342 and $3,149, respectively) $ 476,111 $ 71,438 Interest 15,075 22,257 Securities lending, net 14,080 -- ------------ ------------ 505,266 93,695 ------------ ------------ EXPENSES: Management fees 337,706 162,161 Directors' fees and expenses 957 457 Other expenses 965 2,334 ------------ ------------ 339,628 164,952 ------------ ------------ NET INVESTMENT INCOME (LOSS) 165,638 (71,257) ------------ ------------ REALIZED AND UNREALIZED GAIN (LOSS) NET REALIZED GAIN (LOSS) ON: Investments transactions 213,951 83,940 Foreign currency transactions (88,079) (91,038) ------------ ------------ 125,872 (7,098) ------------ ------------ CHANGE IN NET UNREALIZED APPRECIATION (DEPRECIATION) ON: Investments (4,842,405) (4,803,082) Translation of assets and liabilities in foreign currencies 5,296 2,247 ------------ ------------ (4,837,109) (4,800,835) ------------ ------------ NET REALIZED AND UNREALIZED GAIN (LOSS) (4,711,237) (4,807,933) ------------ ------------ NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(4,545,599) $(4,879,190) ============ ============ See Notes to Financial Statements. - ------ 20 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 NT Growth NT Vista Increase (Decrease) in Net Assets 2008 2007 2008 2007 OPERATIONS Net investment income (loss) $ 165,638 $ 252,008 $ (71,257) $ (123,658) Net realized gain (loss) 125,872 4,588,508 (7,098) 3,240,562 Change in net unrealized appreciation (depreciation) (4,837,109) 10,299,415 (4,800,835) 11,596,277 ----------- ------------ ----------- ------------ Net increase (decrease) in net assets resulting from operations (4,545,599) 15,139,931 (4,879,190) 14,713,181 ----------- ------------ ----------- ------------ DISTRIBUTIONS TO SHAREHOLDERS From net investment income (194,614) (175,726) -- -- From net realized gains (3,783,853) -- (87,218) -- ----------- ------------ ----------- ------------ Decrease in net assets from distributions (3,978,467) (175,726) (87,218) -- =========== ============ =========== ============ CAPITAL SHARE TRANSACTIONS Proceeds from shares sold 23,822,586 31,876,693 11,847,269 16,758,304 Payments for shares redeemed (6,759,069) (17,377,762) (6,102,086) (12,497,498) ----------- ------------ ----------- ------------ Net increase (decrease) in net assets from capital share transactions 17,063,517 14,498,931 5,745,183 4,260,806 ----------- ------------ ----------- ------------ NET INCREASE (DECREASE) IN NET ASSETS 8,539,451 29,463,136 778,775 18,973,987 NET ASSETS Beginning of period 88,445,814 58,982,678 44,652,223 25,678,236 ----------- ------------ ----------- ------------ End of period $96,985,265 $88,445,814 $45,430,998 $44,652,223 =========== ============ =========== ============ Accumulated undistributed net investment income (loss) $112,284 $141,260 $(69,336) $1,921 =========== ============ =========== ============ TRANSACTIONS IN SHARES OF THE FUNDS Sold 2,099,436 2,849,265 1,017,464 1,590,776 Redeemed (555,385) (1,555,417) (477,205) (1,118,215) ----------- ------------ ----------- ------------ Net increase (decrease) in shares of the funds 1,544,051 1,293,848 540,259 472,561 =========== ============ =========== ============ See Notes to Financial Statements. - ------ 21 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. NT Growth Fund (NT Growth) and NT Vista Fund (NT Vista) (collectively, the funds) are two funds in a series issued by the corporation. The funds are diversified under the 1940 Act. The funds' investment objective is to seek long-term capital growth. The funds pursue this objective by investing primarily in equity securities. NT Growth generally invests in larger-sized companies that management believes will increase in value but may purchase companies of any size. NT Vista generally invests in companies that are medium-sized and smaller at the time of purchase that management believes will increase in value. The funds are not permitted to invest in any securities issued by companies assigned the Global Industry Classification Standard for the tobacco industry. The following is a summary of the funds' significant accounting policies. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Discount notes may be valued through a commercial pricing service or at amortized cost, which approximates fair value. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the funds determine that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the funds to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. FOREIGN CURRENCY TRANSACTIONS -- All assets and liabilities initially expressed in foreign currencies are translated into U.S. dollars at prevailing exchange rates at period end. Purchases and sales of investment securities, dividend and interest income, and certain expenses are translated at the rates of exchange prevailing on the respective dates of such transactions. For assets and liabilities, other than investments in securities, net realized and unrealized gains and losses from foreign currency translations arise from changes in currency exchange rates. Net realized and unrealized foreign currency exchange gains or losses occurring during the holding period of investment securities are a component of realized gain (loss) on investment transactions and unrealized appreciation (depreciation) on investments, respectively. Certain countries may impose taxes on the contract amount of purchases and sales of foreign currency contracts in their currency. The funds record the foreign tax expense, if any, as a reduction to the net realized gain (loss) on foreign currency transactions. - ------ 22 FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS -- The funds may enter into forward foreign currency exchange contracts to facilitate transactions of securities denominated in a foreign currency or to hedge the funds' exposure to foreign currency exchange rate fluctuations. The net U.S. dollar value of foreign currency underlying all contractual commitments held by the funds and the resulting unrealized appreciation or depreciation are determined daily using prevailing exchange rates. The funds bear the risk of an unfavorable change in the foreign currency exchange rate underlying the forward contract. Additionally, losses may arise if the counterparties do not perform under the contract terms. SECURITIES ON LOAN -- NT Growth may lend portfolio securities through its lending agent to certain approved borrowers in order to earn additional income. The income earned, net of any rebates or fees, is included in the Statement of Operations. NT Growth continues to recognize any gain or loss in the market price of the securities loaned and records any interest earned or dividends declared. REPURCHASE AGREEMENTS -- The funds may enter into repurchase agreements with institutions that American Century Investment Management, Inc. (ACIM) (the investment advisor) has determined are creditworthy pursuant to criteria adopted by the Board of Directors. Each repurchase agreement is recorded at cost. Each fund requires that the collateral, represented by securities, received in a repurchase transaction be transferred to the custodian in a manner sufficient to enable each fund to obtain those securities in the event of a default under the repurchase agreement. ACIM monitors, on a daily basis, the securities transferred to ensure the value, including accrued interest, of the securities under each repurchase agreement is equal to or greater than amounts owed to each fund under each repurchase agreement. JOINT TRADING ACCOUNT -- Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, each fund, along with other registered investment companies having management agreements with ACIM or American Century Global Investment Management, Inc. (ACGIM), may transfer uninvested cash balances into a joint trading account. These balances are invested in one or more repurchase agreements that are collateralized by U.S. Treasury or Agency obligations. INCOME TAX STATUS -- It is each fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the funds. In addition, in the normal course of business, the funds enter into contracts that provide general indemnifications. The funds' maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the funds. The risk of material loss from such claims is considered by management to be remote. USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. 2. FEES AND TRANSACTIONS WITH RELATED PARTIES MANAGEMENT FEES -- The corporation has entered into a Management Agreement with ACIM, under which ACIM provides the funds with investment advisory and management services in exchange for a single, unified management fee (the fee). The Agreement provides that all expenses of the funds, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of each fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula takes into account all - ------ 23 of the investment advisor's assets under management in each fund's investment strategy (strategy assets) to calculate the appropriate fee rate for each fund. The strategy assets include each fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule for NT Growth ranges from 0.60% to 0.80%. The effective annual management fee for NT Growth for the six months ended April 30, 2008 was 0.80%. The annual management fee for NT Vista is 0.80%. RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, American Century Investment Services, Inc., and the corporation's transfer agent, American Century Services, LLC. The funds are wholly owned, in aggregate, by various funds in a series issued by American Century Asset Allocation Portfolios, Inc. (ACAAP). ACAAP does not invest in the funds for the purpose of exercising management or control. The funds are eligible to invest in a money market fund for temporary purposes, which is managed by J.P. Morgan Investment Management, Inc. (JPMIM). JPMIM is a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. NT Growth has a securities lending agreement with JPMorgan Chase Bank (JPMCB). Prior to December 12, 2007, the funds had a bank line of credit agreement with JPMCB. JPMCB is a custodian of the funds and a wholly owned subsidiary of JPM. 3. INVESTMENT TRANSACTIONS Investment transactions, excluding short-term investments, for the six months ended April 30, 2008, were as follows: NT Growth NT Vista Purchases $77,595,306 $37,346,595 Proceeds from sales $64,218,985 $32,395,943 4. SECURITIES LENDING As of April 30, 2008, securities in NT Growth valued at $1,401,099 were on loan through the lending agent, JPMCB, to certain approved borrowers. JPMCB receives and maintains collateral in the form of cash and/or acceptable securities as approved by ACIM. Cash collateral is invested in authorized investments by the lending agent in a pooled account. The value of cash collateral received at period end is disclosed in the Statement of Assets and Liabilities and investments made with the cash by the lending agent are listed in the Schedule of Investments. Any deficiencies or excess of collateral must be delivered or transferred by the member firms no later than the close of business on the next business day. The total market value of all collateral received for NT Growth, at this date, was $1,440,076. NT Growth's risks in securities lending are that the borrower may not provide additional collateral when required or return the securities when due. If the borrower defaults, receipt of the collateral by the NT Growth may be delayed or limited. 5. BANK LINE OF CREDIT Effective December 12, 2007, the funds, along with certain other funds managed by ACIM or ACGIM, have a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the funds, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The funds may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The funds did not borrow from the line during the six months ended April 30, 2008. 6. RISK FACTORS There are certain risks involved in investing in foreign securities. These risks include those resulting from future adverse political, social, and economic developments, fluctuations in currency exchange rates, the possible imposition of exchange controls, and other foreign laws or restrictions. - ------ 24 7. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: NT Growth NT Vista Federal tax cost of investments $90,073,477 $36,751,606 =========== =========== Gross tax appreciation of investments $11,086,735 $8,820,192 Gross tax depreciation of investments (2,518,631) (558,193) ----------- ----------- Net tax appreciation (depreciation) of investments $8,568,104 $8,261,999 =========== =========== The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. 8. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 25 FINANCIAL HIGHLIGHTS NT Growth For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $12.87 $10.57 $10.00 -------- ------- -------- Income From Investment Operations Net Investment Income (Loss) 0.02 0.04 0.01 Net Realized and Unrealized Gain (Loss) (0.78) 2.29 0.56 -------- ------- -------- Total From Investment Operations (0.76) 2.33 0.57 -------- ------- -------- Distributions From Net Investment Income (0.03) (0.03) -- From Net Realized Gains (0.56) -- -- -------- ------- -------- Total Distributions (0.59) (0.03) -- -------- ------- -------- Net Asset Value, End of Period $11.52 $12.87 $10.57 ======== ======= ======== TOTAL RETURN(3) (6.02)% 22.12% 5.70% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.80%(4) 0.80% 0.80%(4) Ratio of Net Investment Income (Loss) to Average Net Assets 0.39%(4) 0.35% 0.36%(4) Portfolio Turnover Rate 75% 140% 57% Net Assets, End of Period (in thousands) $96,985 $88,446 $58,983 (1) Six months ended April 30, 2008 (unaudited). (2) May 12, 2006 (fund inception) through October 31, 2006. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. (4) Annualized. See Notes to Financial Statements. - ------ 26 NT Vista For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $13.42 $9.00 $10.00 -------- ------- -------- Income From Investment Operations Net Investment Income (Loss) (0.02) (0.04) (0.01) Net Realized and Unrealized Gain (Loss) (1.62) 4.46 (0.99) -------- ------- -------- Total From Investment Operations (1.64) 4.42 (1.00) -------- ------- -------- Distributions From Net Realized Gains (0.03) -- -- -------- ------- -------- Net Asset Value, End of Period $11.75 $13.42 $9.00 ======== ======= ======== TOTAL RETURN(3) (12.25)% 49.11% (10.00)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.81%(4) 0.80% 0.80%(4) Ratio of Net Investment Income (Loss) to Average Net Assets (0.35)%(4) (0.36)% (0.27)%(4) Portfolio Turnover Rate 82% 147% 109% Net Assets, End of Period (in thousands) $45,431 $44,652 $25,678 (1) Six months ended April 30, 2008 (unaudited). (2) May 12, 2006 (fund inception) through October 31, 2006. (3) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. (4) Annualized. See Notes to Financial Statements. - ------ 27 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the funds' investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the funds. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The funds file their complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The funds' Forms N-Q are available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The funds also make their complete schedule of portfolio holdings for the most recent quarter of their fiscal year available on their website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 28 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 1000® GROWTH INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 1000® VALUE INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 2000® INDEX is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® GROWTH INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 2000® VALUE INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® GROWTH INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL MIDCAP® VALUE INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. - ------ 29 NOTES - ------ 30 NOTES - ------ 31 NOTES - ------ 32 [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS . . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60506N
[front cover] SEMIANNUAL REPORT APRIL 30, 2008 [american century investments logo and text logo ®] AMERICAN CENTURY INVESTMENTS AMERICAN CENTURY-MASON STREET MID CAP GROWTH FUND AMERICAN CENTURY-MASON STREET SMALL CAP GROWTH FUND PRESIDENT'S LETTER [photo of Jonathan Thomas] JONATHAN THOMAS Dear Investor, At American Century Investments®, we are committed to helping you reach your financial goals. Your success is the ultimate measure of our performance. That's why we focus on achieving superior investment results and building long-term relationships with investors like you. Part of that relationship is to clearly communicate investment results and what influenced them. To help you monitor your investment with us, we take pride in providing you with the semiannual report for the American Century®-Mason Street Mid Cap Growth and Small Cap Growth funds for the six months ended April 30, 2008. We also recommend americancentury.com, where we provide company news, quarterly portfolio commentaries, investment views, and other useful information. As noted on the website, 2008 marks the 50th anniversary of American Century Investments. Since 1958, we've worked to make wise decisions with your interests as our guide. Fifty years also means that we've met the challenges of previous economic downturns. As we've crossed those hurdles and earned your trust, our assets under management have grown to nearly $100 billion, putting us in the top 5% of our industry. This growth has given us the resources to offer a wide array of financial products and services, including a well-diversified line-up of portfolios that provide you with many choices in these uncertain times. Though our offerings are diverse, they share several key qualities, including our disciplined investment approach and active, team-based management. Strict adherence to our processes and long-term strategies allows us to stay focused during volatile periods. Investors in our portfolios also benefit from the sum of our investment teams' expertise as they share research and information. We'll continue to work hard to earn your trust. Thank you for your continued support. Sincerely, /s/Jonathan Thomas Jonathan S. Thomas President and Chief Executive Officer American Century Investments TABLE OF CONTENTS Market Perspective. . . . . . . . . . . . . . . . . . . . . . . . . . 2 U.S. Stock Index Returns . . . . . . . . . . . . . . . . . . . . . . 2 MID CAP GROWTH Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Top Five Industries. . . . . . . . . . . . . . . . . . . . . . . . . 6 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 6 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 7 SMALL CAP GROWTH Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Portfolio Commentary. . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Ten Holdings . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Top Five Industries. . . . . . . . . . . . . . . . . . . . . . . . . 13 Types of Investments in Portfolio. . . . . . . . . . . . . . . . . . 13 Schedule of Investments . . . . . . . . . . . . . . . . . . . . . . . 14 Shareholder Fee Examples. . . . . . . . . . . . . . . . . . . . . . . 17 FINANCIAL STATEMENTS Statement of Assets and Liabilities . . . . . . . . . . . . . . . . . 19 Statement of Operations . . . . . . . . . . . . . . . . . . . . . . . 21 Statement of Changes in Net Assets. . . . . . . . . . . . . . . . . . 22 Notes to Financial Statements . . . . . . . . . . . . . . . . . . . . 23 Financial Highlights. . . . . . . . . . . . . . . . . . . . . . . . . 29 OTHER INFORMATION Additional Information. . . . . . . . . . . . . . . . . . . . . . . . 41 Index Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . 42 The opinions expressed in the Market Perspective and each of the Portfolio Commentaries reflect those of the portfolio management team as of the date of the report, and do not necessarily represent the opinions of American Century or any other person in the American Century organization. Any such opinions are subject to change at any time based upon market or other conditions and American Century disclaims any responsibility to update such opinions. These opinions may not be relied upon as investment advice and, because investment decisions made by American Century funds are based on numerous factors, may not be relied upon as an indication of trading intent on behalf of any American Century fund. Security examples are used for representational purposes only and are not intended as recommendations to purchase or sell securities. Performance information for comparative indices and securities is provided to American Century by third party vendors. To the best of American Century's knowledge, such information is accurate at the time of printing. MARKET PERSPECTIVE [photo of Chief Investment Officer] By Steve Lurito, Chief Investment Officer, U.S. Growth Equity VOLATILITY UP, STOCKS DOWN The six months ended April 30, 2008 saw stocks produce negative returns as market volatility surged in the wake of the subprime credit crisis. In terms of the economy, tighter credit and the slumping housing market hurt consumer spending and confidence, leading many economists to suggest we're already in recession. Meanwhile, mounting losses hurt the banks, brokers, and other big institutional players important for the functioning of the financial markets. Facing dual economic and financial crises, the Federal Reserve (the Fed) took a series of extraordinary steps, slashing interest rates and acting as a lender of last resort not only for banks, but also major brokers. That helped stocks rebound, with many analysts suggesting that the mid-March buy-out of investment bank Bear Stearns -- in a deal arranged by the Fed -- put a floor under the market. RETURNS BY SIZE, STYLE MIXED Performance by size and style was mixed (see the accompanying table), reflecting the volatile trading during the period, when corporate earnings estimates were revised down sharply. Looking at returns by sector, energy shares were the only segment to produce positive results during the six months. At the other end of the spectrum, credit-related losses took a big bite out of earnings for financials stocks, which performed worst. Consumer discretionary shares also lagged badly, as did information technology stocks, which suffered from poor pricing and demand trends for chips and some consumer-related tech goods. OPPORTUNITY AMID VOLATILITY Despite the uncertainty surrounding the economy, we think growth-oriented stocks can perform well relative to value as proven earnings growth becomes scarce during economic slowdowns. And while we don't see an end to market volatility anytime soon, we view this dynamic as a natural part of the investing cycle -- and one that presents us with opportunities to build positions in what we believe are high-quality companies trading at attractive prices. Indeed, investors should rest assured that we're finding no shortage of companies demonstrating sustained earnings growth and business improvement. U.S. Stock Index Returns For the six months ended April 30, 2008* RUSSELL 1000 INDEX (LARGE-CAP) -9.54% Russell 1000 Growth Index -9.28% Russell 1000 Value Index -9.83% RUSSELL MIDCAP INDEX -8.77% Russell Midcap Growth Index -8.44% Russell Midcap Value Index -9.20% RUSSELL 2000 INDEX (SMALL-CAP) -12.92% Russell 2000 Growth Index -14.14% Russell 2000 Value Index -11.55% *Total returns for periods less than one year are not annualized. - ------ 2 PERFORMANCE Mid Cap Growth Total Returns as of April 30, 2008 Average Annual Returns 6 10 Since Inception months(1) 1 year 5 years years Inception Date A CLASS(2) No sales charge* -9.00% 3.97% 11.17% 5.81% 9.37% With sales charge* -14.24% -1.99% 9.87% 5.18% 8.79% 3/31/97 RUSSELL MIDCAP GROWTH INDEX(3) -8.44% -1.93% 15.29% 5.75% 8.71% -- S&P MIDCAP 400 INDEX(3) -6.95% -2.76% 15.20% 9.64% 12.82% -- Investor Class -8.89% 4.25% -- -- 3.72% 4/3/06 Institutional Class -8.80% 4.46% -- -- 3.92% 4/3/06 B Class(2) No sales charge* -9.32% 3.28% 10.47% 5.11% 8.65% With sales charge* -14.32% -0.72% 10.33% 5.11% 8.65% 3/31/97 C Class No sales charge* -9.31% 3.22% -- -- 2.69% With sales charge* -10.13% 3.22% -- -- 2.69% 4/3/06 R Class -9.11% 3.70% -- -- 3.19% 4/3/06 *Sales charges include initial sales charges and contingent deferred sales charges (CDSCs), as applicable. A Class shares have a 5.75% maximum initial sales charge for equity funds and may be subject to a maximum CDSC of 1.00%. B Class shares redeemed within six years of purchase are subject to a CDSC that declines from 5.00% during the first year after purchase to 0.00% the sixth year after purchase. C Class shares redeemed within 12 months of purchase are subject to a maximum CDSC of 1.00%. The SEC requires that mutual funds provide performance information net of maximum sales charges in all cases where charges could be applied. Mid Cap Growth acquired all the net assets of the Mason Street Aggressive Growth Stock Fund on March 31, 2006, pursuant to a plan of reorganization approved by the acquired fund's shareholders on March 15, 2006. Performance information prior to April 1, 2006, is that of the Mason Street Aggressive Growth Stock Fund. (1) Total returns for periods less than one year are not annualized. (2) Class returns would have been lower if fees had not been waived. (3) Data provided by Lipper Inc. - A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Unless otherwise indicated, performance reflects A Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 3 Mid Cap Growth Growth of $10,000 Over 10 Years $10,000 investment made April 30, 1998*
One-Year Returns Over 10 Years Periods ended April 30 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 A Class (no sales charge)** 3.76% 62.75% -15.64% -8.63% -20.47% 23.58% 1.74% 26.45% 2.79% 3.97% Russell Midcap Growth Index 12.33% 53.02% -29.47% -15.01% -16.67% 36.14% 7.05% 28.27% 11.13% -1.93% S&P MidCap 400 Index 6.43% 23.52% 7.04% 6.57% -17.51% 34.45% 9.74% 28.32% 10.19% -2.76% *Mid Cap Growth A Class's initial investment is $9,425 to reflect the maximum 5.75% initial sales charge. **Class returns would have been lower, along with ending value, if fees had not been waived. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Unless otherwise indicated, performance reflects A Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 4 PORTFOLIO COMMENTARY Mid Cap Growth Portfolio Managers: Jill Grueninger and Curt Ludwick PERFORMANCE SUMMARY Mid Cap Growth returned -9.00%* during the six months ended April 30, 2008. By comparison, the Russell MidCap Growth Index returned -8.44%. See page 3 for additional performance comparisons. The portfolio's absolute return was driven by the stock market's negative results, led by information technology shares. The story is much the same when looking at performance relative to the benchmark -- information technology holdings were by far the leading detractors, while industrials and energy holdings contributed most. INFORMATION TECHNOLOGY LAGGED Stock selection in the information technology sector was the leading detractor from performance compared with the index. Holdings in the IT services, internet software & services, and communications equipment industries were all notable sources of weakness. Five of the top-10 individual detractors for the six months resided in this sector, led by electronic payment processor VeriFone Holdings, which re-stated earnings, taking a hit to growth and margins. Elsewhere in the sector, overweight positions in computer networking company Foundry Networks, internet advertiser ValueClick, and e-commerce software firm Digital River were notable detractors. These stocks are all good examples of a trend evident in the broader market -- generally speaking, high-momentum, high-valuation stocks that were winners for much of 2007 sold off aggressively in December and into the first quarter of 2008. OTHER DETRACTORS Chinese advertiser Focus Media Holdings was another notable detractor for the six-month reporting period that had been a leading contributor in 2007. The stock's success left it vulnerable to the sell-off that swept global markets during the last several months, so when the company reported a slowdown in its cell phone ad business, skittish traders bailed on the stock. Another key detractor was an overweight position in bond insurer MBIA. We thought the company would benefit from the re-pricing of risk in the bond market -- the more conscious investors are of risk, the more demand and pricing power bond insurers should enjoy. Unfortunately, the firm experienced significant losses relating to the Top Ten Holdings as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 DaVita Inc. 2.9% 3.0% Amphenol Corp. Cl A 2.7% 1.9% GameStop Corp. Cl A 2.2% 2.6% Express Scripts, Inc. 2.2% 2.2% Owens-Illinois Inc. 2.2% 1.3% Psychiatric Solutions, Inc. 2.1% 1.6% ValueClick Inc. 2.0% 2.2% Activision, Inc. 2.0% 1.6% Microchip Technology Inc. 2.0% 1.6% Cameron International Corp. 1.9% 2.4% *All fund returns referenced in this commentary are for A Class shares and are not reduced by sales charges. A Class shares are subject to a maximum sales charge of 5.75%. Had the sales charge been applied, returns would be lower than those shown. Total returns for periods less than one year are not annualized. - ------ 5 Mid Cap Growth subprime mortgage crisis. That had the big credit rating agencies, such as Standard & Poor's and Moody's, reconsidering the company's AAA rating, limiting MBIA's future business prospects. INDUSTRIALS CONTRIBUTED MOST Industrial shares were the leading contributors to relative performance, led by positioning in the road & rail and air freight & logistics industries, as these shares rebounded after a difficult 2007. The leading contributor in this space was shipping and logistics firm C.H. Robinson Worldwide, which saw improvement across virtually all aspects of its business for the first quarter of 2008. It also benefited performance relative to the benchmark to avoid the poor-performing airline segment, which suffered from rising fuel costs and worries about exposure to a slowing economy. OTHER NOTABLE CONTRIBUTORS The portfolio also enjoyed positive contributions from energy and materials shares, the two sectors where our stock selection was most effective. The portfolio's energy holdings included overweight positions in Southwest Energy, Range Resources, and SandRidge Energy -- three of the top-10 contributors for the period -- which were aided by surging natural gas prices and industry spending on exploration and production. The leading contributor in the materials sector was an overweight position in Owens-Illinois. The world's biggest glass bottle maker continued to make progress on its turnaround, and has benefited from shuttering excess capacity in the packaging industry. OUTLOOK Our investment process focuses on medium- and small-sized companies that we believe are well managed, have solid growth in revenue and earnings, and have strong financial characteristics. We believe that strategy will generate outperformance over time versus the Russell MidCap Growth Index and our mid-cap growth peer group. Despite the sharp volatility in the market in recent months, we're finding no shortage of companies that meet our investment criteria. As of April 30, 2008, we were finding opportunities in the health care and information technology segments. Top Five Industries as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 Health Care Providers & Services 9.1% 10.3% Energy Equipment & Services 7.2% 7.4% Oil, Gas & Consumable Fuels 6.0% 2.0% Software 5.0% 5.6% Capital Markets 4.9% 5.0% Types of Investments in Portfolio % of % of net assets net assets as of as of 4/30/08 10/31/07 Domestic Common Stocks and Futures 88.9% 91.2% Foreign Common Stocks(1) 6.8% 5.6% TOTAL EQUITY EXPOSURE 95.7% 96.8% Short-Term Investments 3.2% 3.0% Other Assets and Liabilities 1.1% 0.2% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. - ------ 6 SCHEDULE OF INVESTMENTS Mid Cap Growth APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 94.2% AEROSPACE & DEFENSE -- 2.0% 13,500 L-3 Communications Holdings, Inc. $ 1,504,575 84,400 Spirit AeroSystems Holdings Inc. Cl A(1) 2,461,948 ------------ 3,966,523 ------------ AIR FREIGHT & LOGISTICS -- 2.9% 58,400 C.H. Robinson Worldwide Inc. 3,660,512 43,220 Expeditors International of Washington, Inc. 2,013,620 ------------ 5,674,132 ------------ BIOTECHNOLOGY -- 1.2% 35,800 Celgene Corp.(1) 2,224,612 ------------ CAPITAL MARKETS -- 4.9% 76,820 Investment Technology Group Inc.(1) 3,707,333 26,900 Northern Trust Corp. 1,993,559 2,300 Raymond James Financial, Inc. 66,171 48,700 SEI Investments Co. 1,133,249 45,900 T. Rowe Price Group Inc. 2,687,904 ------------ 9,588,216 ------------ CHEMICALS -- 1.3% 27,630 Praxair, Inc. 2,522,895 ------------ COMMERCIAL SERVICES & SUPPLIES -- 4.3% 122,100 Corrections Corp. of America(1) 3,113,550 41,450 Monster Worldwide Inc.(1) 1,008,479 85,200 Ritchie Bros. Auctioneers Inc. 2,125,740 40,880 Stericycle Inc.(1) 2,182,174 ------------ 8,429,943 ------------ COMMUNICATIONS EQUIPMENT -- 0.9% 140,900 Foundry Networks, Inc.(1) 1,793,657 ------------ COMPUTERS & PERIPHERALS -- 0.8% 65,800 NetApp, Inc.(1) 1,592,360 ------------ CONSTRUCTION & ENGINEERING -- 0.7% 22,400 Foster Wheeler Ltd.(1) 1,426,656 ------------ CONTAINERS & PACKAGING -- 2.2% 77,800 Owens-Illinois Inc.(1) 4,290,670 ------------ DIVERSIFIED CONSUMER SERVICES -- 2.3% 18,900 Apollo Group, Inc. Cl A(1) 962,010 60,000 DeVry Inc. 3,420,000 ------------ 4,382,010 ------------ DIVERSIFIED FINANCIAL SERVICES -- 1.9% 2,060 CME Group Inc. 942,347 10,112 IntercontinentalExchange Inc.(1) 1,568,877 Shares Value 11,700 Nymex Holdings Inc. $ 1,083,420 ------------ 3,594,644 ------------ ELECTRONIC EQUIPMENT & INSTRUMENTS -- 2.7% 111,920 Amphenol Corp. Cl A 5,168,466 ------------ ENERGY EQUIPMENT & SERVICES -- 7.2% 76,200 Cameron International Corp.(1) 3,751,326 21,800 Diamond Offshore Drilling, Inc. 2,733,938 52,100 Nabors Industries Ltd.(1) 1,955,834 40,000 National Oilwell Varco, Inc.(1) 2,738,000 36,800 Smith International, Inc. 2,815,568 ------------ 13,994,666 ------------ FOOD & STAPLES RETAILING -- 0.8% 39,000 Longs Drug Stores Corp. 1,562,340 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 4.5% 109,270 Immucor, Inc.(1) 2,948,105 7,800 Intuitive Surgical Inc.(1) 2,256,228 29,000 Mentor Corp. 848,830 27,700 Mettler-Toledo International, Inc.(1) 2,638,702 ------------ 8,691,865 ------------ HEALTH CARE PROVIDERS & SERVICES -- 9.1% 108,700 DaVita Inc.(1) 5,696,967 61,600 Express Scripts, Inc.(1) 4,313,232 38,515 Pediatrix Medical Group, Inc.(1) 2,619,790 115,395 Psychiatric Solutions, Inc.(1) 4,005,360 35,580 VCA Antech Inc.(1) 1,151,725 ------------ 17,787,074 ------------ HOTELS, RESTAURANTS & LEISURE -- 2.3% 73,700 International Game Technology 2,560,338 74,200 Jack in the Box Inc.(1) 1,984,850 ------------ 4,545,188 ------------ INSURANCE -- 1.4% 80,300 Assured Guaranty Ltd. 2,030,787 62,000 MBIA Inc. 644,800 ------------ 2,675,587 ------------ INTERNET SOFTWARE & SERVICES -- 2.0% 195,980 ValueClick Inc.(1) 3,909,801 ------------ IT SERVICES -- 4.7% 17,000 Alliance Data Systems Corp.(1) 975,970 57,260 Cognizant Technology Solutions Corp. Cl A(1) 1,846,635 72,100 Global Payments Inc. 3,191,146 70,710 NeuStar, Inc. Cl A(1) 1,945,232 98,200 VeriFone Holdings Inc.(1) 1,098,858 ------------ 9,057,841 ------------ - ------ 7 Mid Cap Growth Shares Value LIFE SCIENCES TOOLS & SERVICES -- 1.3% 45,200 Charles River Laboratories(1) $ 2,623,860 ------------ MACHINERY -- 2.1% 49,000 Harsco Corp. 2,907,170 32,300 Manitowoc Co., Inc. (The) 1,221,586 ------------ 4,128,756 ------------ MEDIA -- 1.6% 85,800 Focus Media Holding Ltd. ADR(1) 3,165,162 ------------ METALS & MINING -- 1.4% 25,700 SPDR S&P Metals & Mining ETF 1,960,910 52,900 Titanium Metals Corp. 806,196 ------------ 2,767,106 ------------ MULTILINE RETAIL -- 2.8% 87,000 Dollar Tree, Inc.(1) 2,749,200 38,200 Kohl's Corp.(1) 1,866,070 70,500 Saks Inc.(1) 917,205 ------------ 5,532,475 ------------ OIL, GAS & CONSUMABLE FUELS -- 6.0% 33,700 Equitable Resources Inc. 2,236,669 51,630 Range Resources Corporation 3,427,199 52,400 SandRidge Energy, Inc.(1) 2,367,432 88,400 Southwestern Energy Co.(1) 3,740,204 ------------ 11,771,504 ------------ PERSONAL PRODUCTS -- 1.1% 97,600 Bare Escentuals Inc.(1) 2,226,256 ------------ ROAD & RAIL -- 2.4% 63,010 J.B. Hunt Transport Services, Inc. 2,140,450 143,500 Knight Transportation Inc. 2,438,065 ------------ 4,578,515 ------------ SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 4.8% 44,200 Broadcom Corp. Cl A(1) 1,147,432 34,550 KLA-Tencor Corp. 1,509,144 105,397 Microchip Technology Inc. 3,873,340 58,700 NVIDIA Corp.(1) 1,206,285 39,800 Varian Semiconductor Equipment Associates, Inc.(1) 1,457,874 ------------ 9,194,075 ------------ Shares Value SOFTWARE -- 5.0% 144,297 Activision, Inc.(1) $ 3,903,233 24,900 Autodesk, Inc.(1) 946,200 40,338 Citrix Systems, Inc.(1) 1,321,070 59,400 FactSet Research Systems Inc. 3,565,782 ------------ 9,736,285 ------------ SPECIALTY RETAIL -- 4.5% 121,700 Collective Brands, Inc.(1) 1,505,429 78,900 GameStop Corp. Cl A(1) 4,342,656 32,170 O'Reilly Automotive Inc.(1) 928,748 57,600 Urban Outfitters Inc.(1) 1,972,800 ------------ 8,749,633 ------------ TRADING COMPANIES & DISTRIBUTORS -- 1.1% 44,300 MSC Industrial Direct Co. Cl A 2,160,068 ------------ TOTAL COMMON STOCKS (Cost $157,732,159) 183,512,841 ------------ Principal Amount Short-Term Investments -- 3.2% $2,000,000 ConAgra Foods, Inc., 3.08%, 5/2/08 (Acquired 4/18/08, Cost $1,997,604)(2)(3) 1,999,698 1,800,000 Devon Energy Corp., 2.87%, 5/1/08(3) 1,799,865 500,000 FNMA Discount Notes, 2.72%, 5/21/08(3) 499,493 2,000,000 Viacom Inc., 3.25%, 5/14/08 (Acquired 4/30/08, Cost $1,997,472)(2)(3) 1,997,762 ------------ TOTAL SHORT-TERM INVESTMENTS (Cost $6,296,727) 6,296,818 ------------ Short-Term Investments -- Segregated for Futures Contracts -- 1.5% 3,000,000 New Center Asset Trust, 3.05%, 5/29/08(3) (Cost $2,992,883) 2,992,536 ------------ TOTAL INVESTMENT SECURITIES -- 98.9% (Cost $167,021,769) 192,802,195 ------------ OTHER ASSETS AND LIABILITIES -- 1.1% 2,013,146 ------------ TOTAL NET ASSETS -- 100.0% $194,815,341 ============ - ------ 8 Mid Cap Growth Futures Contracts Expiration Underlying Face Unrealized Contracts Purchased Date Amount at Value Gain (Loss) 6 S&P MidCap 400 Index Futures June 2008 $2,515,500 $182,066 ============ ============ Notes to Schedule of Investments ADR = American Depositary Receipt ETF = Exchange Traded Fund FNMA = Federal National Mortgage Association SPDR = Standard and Poor's Depositary Receipt (1) Non-income producing. (2) Security was purchased under Rule 144A or Section 4(2) of the Securities Act of 1933 or is a private placement and, unless registered under the Act or exempted from registration, may only be sold to qualified institutional investors. The aggregate value of restricted securities at April 30, 2008, was $3,997,460, which represented 2.1% of total net assets. (3) The rate indicated is the yield to maturity at purchase. See Notes to Financial Statements. - ------ 9 PERFORMANCE Small Cap Growth Total Returns as of April 30, 2008 Average Annual Returns 6 Since Inception months(1) 1 year 5 years Inception Date A CLASS(2) No sales charge* -21.79% -10.78% 10.40% 9.13% With sales charge* -26.28% -15.88% 9.10% 8.40% 7/12/99 RUSSELL 2000 GROWTH INDEX(3) -14.14% -6.71% 13.32% 2.15%(4) -- S&P SMALLCAP 600 INDEX(3) -11.60% -9.04% 14.73% 9.22%(4) -- Investor Class -21.73% -10.62% -- -4.95% 4/3/06 Institutional Class -21.65% -10.46% -- -4.76% 4/3/06 B Class(2) No sales charge* -22.03% -11.31% 9.71% 8.45% With sales charge* -27.03% -15.31% 9.57% 8.45% 7/12/99 C Class No sales charge* -22.15% -11.57% -- -5.93% With sales charge* -22.80% -11.57% -- -5.93% 4/3/06 R Class -21.94% -11.10% -- -5.44% 4/3/06 *Sales charges include initial sales charges and contingent deferred sales charges (CDSCs), as applicable. A Class shares have a 5.75% maximum initial sales charge for equity funds and may be subject to a maximum CDSC of 1.00%. B Class shares redeemed within six years of purchase are subject to a CDSC that declines from 5.00% during the first year after purchase to 0.00% the sixth year after purchase. C Class shares redeemed within 12 months of purchase are subject to a maximum CDSC of 1.00%. The SEC requires that mutual funds provide performance information net of maximum sales charges in all cases where charges could be applied. Small Cap Growth acquired all the net assets of the Mason Street Small Cap Growth Stock Fund on March 31, 2006, pursuant to a plan of reorganization approved by the acquired fund's shareholders on March 23, 2006. Performance information prior to April 1, 2006, is that of the Mason Street Small Cap Growth Stock Fund. (1) Total returns for periods less than one year are not annualized. (2) Class returns would have been lower if fees had not been waived. (3) Data provided by Lipper Inc. - A Reuters Company. ©2008 Reuters. All rights reserved. Any copying, republication or redistribution of Lipper content, including by caching, framing or similar means, is expressly prohibited without the prior written consent of Lipper. Lipper shall not be liable for any errors or delays in the content, or for any actions taken in reliance thereon. The data contained herein has been obtained from company reports, financial reporting services, periodicals and other resources believed to be reliable. Although carefully verified, data on compilations is not guaranteed by Lipper and may be incomplete. No offer or solicitations to buy or sell any of the securities herein is being made by Lipper. (4) Since 7/14/99, the date nearest the A Class's inception for which data are available. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Historically, small company stocks have been more volatile than the stocks of larger, more established companies. Unless otherwise indicated, performance reflects A Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 10 Small Cap Growth Growth of $10,000 Over Life of Class $10,000 investment made July 12, 1999
One-Year Returns Over Life of Class Periods ended April 30 2000* 2001 2002 2003 2004 2005 2006 2007 2008 A Class (no sales charge)** 73.88% -9.33% 5.41% -20.83% 34.30% 5.76% 31.66% -1.65% -10.78% Russell 2000 Growth Index 22.64% -24.85% -8.52% -23.50% 41.57% -0.55% 36.13% 4.53% -6.71% S&P SmallCap 600 Index 9.74% 8.09% 16.54% -20.95% 39.94% 10.43% 31.39% 7.65% -9.04% *From 7/12/99, the A Class's inception date. Index data from 7/14/99, the date nearest the A Class's inception for which data are available. Not annualized. Small Cap Growth A Class's initial investment is $9,425 to reflect the maximum 5.75% initial sales charge. **Class returns would have been lower, along with ending value, if fees had not been waived. Data presented reflect past performance. Past performance is no guarantee of future results. Current performance may be higher or lower than the performance shown. Investment return and principal value will fluctuate, and redemption value may be more or less than original cost. To obtain performance data current to the most recent month end, please call 1-800-345-2021 or visit americancentury.com. Historically, small company stocks have been more volatile than the stocks of larger, more established companies. Unless otherwise indicated, performance reflects A Class shares; performance for other share classes will vary due to differences in fee structure. For information about other share classes available, please consult the prospectus. Data assumes reinvestment of dividends and capital gains, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. Returns for the indices are provided for comparison. The fund's total returns include operating expenses (such as transaction costs and management fees) that reduce returns, while the total returns of the indices do not. - ------ 11 PORTFOLIO COMMENTARY Small Cap Growth Portfolio Managers: Bill Walker and Andy Eng PERFORMANCE SUMMARY Small Cap Growth returned -21.79%* during the six months ended April 30, 2008. By comparison, the Russell 2000 Growth Index returned -14.14%. See page 10 for additional performance comparisons. As measured by the Russell indexes, shown on page 2, small-cap growth stocks were the poorest-performing segment of the market. Within the small-cap space, only energy shares produced a positive return, and information technology (IT) stocks performed worst. That goes a long way toward explaining the performance of the portfolio, whose largest industry exposure was to small-cap technology companies. Indeed, IT was by far the leading detractor from absolute and relative results. Consumer discretionary and financial shares were also notable detractors. In terms of positive contributors, stock selection aided relative performance across a number of sectors, led by industrial and consumer staples shares. IT STOCKS DETRACTED MOST Stock selection in the information technology sector detracted most from performance. Holdings in the internet software & services, software, communications equipment, and electronic equipment industries detracted most from relative results. Indeed, the sector was home to six of the top-10 individual detractors. The general theme explaining the underperformance was company- or product-specific issues that led to disappointing revenues and/or profits. Examples of significant detractors that fit this model are computer products reseller InsightEnterprises and SiRF Technology, which makes chips for global positioning devices. Insight reported disappointing third-quarter results, pushing out revenues into future quarters and seeing higher costs as the company continued to work to digest a late-2006 acquisition. SiRF underperformed as business conditions deteriorated, missing earnings targets, and losing market share. Other notable detractors in the sector were positions in Riverbed Technology, Limelight Networks, Aruba Networks, and ComScore. CONSUMER DISCRETIONARY, FINANCIALS LAGGED The consumer discretionary and financials sectors were other key areas of weakness because of stock selection. In the consumer discretionary space, positions in the textiles, apparel, and luxury goods, and hotels, restaurants, and leisure industries Top Ten Holdings as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 Oceaneering International, Inc. 1.9% 1.4% ICON plc ADR 1.8% -- Bucyrus International, Inc. 1.7% 1.1% Arena Resources Inc. 1.7% -- Sohu.com Inc. 1.7% 1.5% Pediatrix Medical Group, Inc. 1.7% 1.4% Axsys Technologies, Inc. 1.6% 0.9% Central European Distribution Corp. 1.5% 1.3% Warnaco Group Inc. (The) 1.5% -- Masimo Corp. 1.5% 0.9% *All fund returns referenced in this commentary are for A Class shares and are not reduced by sales charges. A Class shares are subject to a maximum sales charge of 5.75%. Had the sales charge been applied or if distribution and service fees had not been waived, returns would be lower than those shown. Total returns for periods less than one year are not annualized. - ------ 12 Small Cap Growth detracted most. The leading detractor in this space was fitness, spa, and resort operator Life Time Fitness, which experienced slower enrollment growth and guided future business expectations lower. Financials detracted behind an underweight position and stock selection among real estate investment trusts. REITs rebounded after a difficult 2007, and we were underrepresented in the industry. What's more, one of the stocks we did hold in this space underperformed -- MFA Mortgage Investments. The stock sold off after news of liquidity problems at a competitor; however, we believe MFA itself remains a well-capitalized, attractive business. LEADING CONTRIBUTORS Industrial shares were far and away the leading contributors to relative performance, driven primarily by holdings in the machinery, trading companies and distributors, commercial services and supplies, and road and rail industries. The sector was home to six of the 10 largest contributors, led by Axsys Technologies, which provides optical equipment for military uses. The firm saw orders increase, leading to better-than-expected earnings and guidance for future quarters. Other leading contributors in the sector were UAP Holding, Bucyrus International, Knight Transportation, LKQ, and IHS. Stock selection also added value in the consumer staples sector, which was home to top-10 contributor Central European Distribution. The Polish vodka company benefited from an acquisition that gives it distribution rights for some leading brands in Russia. OUTLOOK Our disciplined investment process focuses on what we believe to be well-managed, high-quality, fast-growing, attractively valued small-cap companies. Because we build the portfolio stock by stock, our sector and industry allocations reflect where we're finding the best growth opportunities at a given time. Despite the poor performance and extreme volatility evident in the IT sector, we continue to believe these shares present us with the most dynamic growth opportunities going forward. As a result, our largest sector overweight as of April 30, 2008, was in IT. The most notable sector underweights were in consumer discretionary and health care stocks. Top Five Industries as of April 30, 2008 % of % of net assets net assets as of as of 4/30/08 10/31/07 Internet Software & Services 9.2% 12.6% Software 7.4% 7.9% Health Care Equipment & Supplies 6.9% 7.6% Energy Equipment & Services 5.5% 5.0% Machinery 5.5% 3.1% Types of Investments in Portfolio % of % of net assets net assets as of as of 4/30/08 10/31/07 Domestic Common Stocks and Futures 86.1% 88.7% Foreign Common Stocks(1) 9.1% 8.8% TOTAL EQUITY EXPOSURE 95.2% 97.5% Short-Term Investments 3.8% 3.7% Other Assets and Liabilities 1.0% (1.2)% (1) Includes depositary shares, dual listed securities and foreign ordinary shares. - ------ 13 SCHEDULE OF INVESTMENTS Small Cap Growth APRIL 30, 2008 (UNAUDITED) Shares Value Common Stocks -- 95.2% AEROSPACE & DEFENSE -- 2.2% 5,732 AeroVironment, Inc.(1) $ 137,052 8,275 Astronics Corp.(1) 147,295 10,730 TransDigm Group, Inc.(1) 407,418 ------------ 691,765 ------------ AIR FREIGHT & LOGISTICS -- 0.5% 5,197 Hub Group Inc. Cl A(1) 169,890 ------------ BEVERAGES -- 1.5% 7,980 Central European Distribution Corp.(1) 486,142 ------------ BIOTECHNOLOGY -- 2.0% 12,797 BioMarin Pharmaceutical Inc.(1) 466,579 9,016 Cepheid(1) 176,443 ------------ 643,022 ------------ CAPITAL MARKETS -- 3.1% 6,323 FCStone Group, Inc.(1) 261,899 6,798 Investment Technology Group Inc.(1) 328,071 15,769 KBW, Inc.(1) 374,356 ------------ 964,326 ------------ CHEMICALS -- 1.0% 6,275 Airgas Inc. 302,016 ------------ COMMERCIAL BANKS -- 0.4% 13,296 Boston Private Financial Holdings, Inc. 123,653 ------------ COMMERCIAL SERVICES & SUPPLIES -- 4.5% 3,656 Advisory Board Co. (The)(1) 170,443 9,331 Cornell Companies, Inc.(1) 212,000 10,952 Corrections Corp. of America(1) 279,276 4,700 Hill International Inc.(1) 67,915 5,645 IHS Inc. Cl A(1) 372,852 9,992 Team, Inc.(1) 297,062 ------------ 1,399,548 ------------ COMMUNICATIONS EQUIPMENT -- 2.2% 27,272 Comtech Group Inc.(1) 355,081 15,064 F5 Networks, Inc.(1) 340,898 ------------ 695,979 ------------ CONTAINERS & PACKAGING -- 0.9% 5,178 Silgan Holdings Inc. 275,884 ------------ DISTRIBUTORS -- 1.0% 14,260 LKQ Corp.(1) 310,298 ------------ Shares Value DIVERSIFIED -- 1.5% 11,830 Financial Select Sector SPDR Fund $ 312,785 4,500 KBW Regional Banking ETF(1) 156,645 ------------ 469,430 ------------ DIVERSIFIED CONSUMER SERVICES -- 4.1% 10,597 American Public Education Inc.(1) 341,329 7,362 Capella Education Co.(1) 474,775 6,431 New Oriental Education & Technology Group Inc. ADR(1) 482,712 ------------ 1,298,816 ------------ DIVERSIFIED TELECOMMUNICATION SERVICES -- 0.8% 31,924 PAETEC Holding Corp.(1) 246,134 ------------ ELECTRIC UTILITIES -- 1.5% 8,420 ITC Holdings Corp. 469,668 ------------ ELECTRICAL EQUIPMENT -- 0.5% 6,898 Polypore International, Inc.(1) 161,482 ------------ ELECTRONIC EQUIPMENT & INSTRUMENTS -- 1.2% 24,249 Mellanox Technologies, Ltd.(1) 363,008 ------------ ENERGY EQUIPMENT & SERVICES -- 5.5% 3,901 Dril-Quip Inc.(1) 222,981 8,752 Oceaneering International, Inc.(1) 584,460 6,729 T-3 Energy Services Inc.(1) 355,291 14,728 TETRA Technologies, Inc.(1) 239,477 4,298 W-H Energy Services Inc.(1) 332,192 ------------ 1,734,401 ------------ HEALTH CARE EQUIPMENT & SUPPLIES -- 6.9% 13,440 Hologic, Inc.(1) 392,314 16,658 Masimo Corp.(1) 485,580 12,662 Meridian Bioscience Inc. 340,988 11,910 NuVasive, Inc.(1) 454,367 22,794 Thoratec Corp.(1) 364,476 10,148 TranS1 Inc.(1) 132,431 ------------ 2,170,156 ------------ HEALTH CARE PROVIDERS & SERVICES -- 4.4% 12,193 Genoptix, Inc.(1) 334,454 7,788 Pediatrix Medical Group, Inc.(1) 529,740 11,714 Providence Service Corp. (The)(1) 329,632 5,247 Psychiatric Solutions, Inc.(1) 182,123 ------------ 1,375,949 ------------ - ------ 14 Small Cap Growth Shares Value HEALTH CARE TECHNOLOGY -- 1.4% 23,929 Phase Forward Inc.(1) $ 440,294 ------------ HOTELS, RESTAURANTS & LEISURE -- 2.9% 3,230 Life Time Fitness Inc.(1) 117,411 7,931 Red Robin Gourmet Burgers Inc.(1) 325,805 12,796 WMS Industries Inc.(1) 463,087 ------------ 906,303 ------------ INTERNET SOFTWARE & SERVICES -- 9.2% 3,755 Bankrate, Inc.(1) 196,161 16,461 comScore, Inc.(1) 310,619 4,967 DealerTrack Holdings Inc.(1) 95,565 7,034 Omniture, Inc.(1) 160,516 7,764 Sohu.com Inc.(1) 536,724 46,442 SonicWALL, Inc.(1) 357,139 15,697 Switch & Data Facilities Co. Inc.(1) 237,653 21,608 ValueClick Inc.(1) 431,080 10,086 VistaPrint Ltd.(1) 343,227 7,731 Vocus Inc.(1) 214,844 ------------ 2,883,528 ------------ IT SERVICES -- 1.3% 27,134 Global Cash Access Inc.(1) 167,688 9,064 NeuStar, Inc. Cl A(1) 249,351 ------------ 417,039 ------------ LIFE SCIENCES TOOLS & SERVICES -- 2.4% 7,630 ICON plc ADR(1) 549,360 2,699 Illumina, Inc.(1) 210,225 ------------ 759,585 ------------ MACHINERY -- 5.5% 9,052 Axsys Technologies, Inc.(1) 493,787 4,329 Bucyrus International, Inc. 545,150 5,397 Kaydon Corp. 282,641 10,100 Titan Machinery Inc.(1) 183,921 2,199 Valmont Industries, Inc. 216,514 ------------ 1,722,013 ------------ MEDIA -- 0.4% 7,910 Dolan Media Co.(1) 137,159 ------------ METALS & MINING -- 1.5% 6,072 SPDR S&P Metals & Mining ETF 463,294 ------------ MULTILINE RETAIL -- 0.9% 9,430 Dollar Tree, Inc.(1) 297,988 ------------ Shares Value OIL, GAS & CONSUMABLE FUELS -- 3.9% 12,132 Arena Resources Inc.(1) $ 544,727 4,565 Carrizo Oil & Gas Inc.(1) 289,832 5,032 Petroleum Development Corp.(1) 378,557 ------------ 1,213,116 ------------ PERSONAL PRODUCTS -- 0.9% 11,813 Alberto-Culver Co. 297,333 ------------ PHARMACEUTICALS -- 0.4% 14,448 Obagi Medical Products Inc.(1) 115,728 ------------ REAL ESTATE INVESTMENT TRUSTS (REITS) -- 1.5% 7,198 Digital Realty Trust Inc. 278,923 25,900 MFA Mortgage Investments, Inc. 181,041 ------------ 459,964 ------------ ROAD & RAIL -- 0.5% 9,170 Knight Transportation Inc. 155,798 ------------ SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 4.9% 23,301 Advanced Energy Industries, Inc.(1) 326,214 9,131 Atheros Communications, Inc.(1) 243,067 5,100 Diodes Inc.(1) 137,904 11,656 Netlogic Microsystems Inc.(1) 382,200 21,500 RF Micro Devices, Inc.(1) 72,455 6,186 Rubicon Technology, Inc.(1) 136,463 11,574 Tessera Technologies Inc.(1) 234,258 ------------ 1,532,561 ------------ SOFTWARE -- 7.4% 7,707 Blackboard Inc.(1) 266,200 9,597 Concur Technologies, Inc.(1) 318,045 18,588 Glu Mobile Inc.(1) 87,178 16,729 Macrovision Corp.(1) 263,984 20,977 Synchronoss Technologies, Inc.(1) 437,789 14,794 Taleo Corp. Cl A(1) 288,483 13,090 Ultimate Software Group Inc.(1) 429,220 26,017 VanceInfo Technologies Inc. ADR(1) 222,706 ------------ 2,313,605 ------------ SPECIALTY RETAIL -- 1.6% 13,029 Dick's Sporting Goods, Inc.(1) 372,629 8,860 Ulta Salon, Cosmetics & Fragrance, Inc.(1) 125,369 ------------ 497,998 ------------ - ------ 15 Small Cap Growth Shares Value TEXTILES, APPAREL & LUXURY GOODS -- 1.5% 10,530 Warnaco Group Inc. (The)(1) $ 485,854 ------------ THRIFTS & MORTGAGE FINANCE -- 0.5% 8,578 Encore Bancshares, Inc.(1) 150,287 ------------ WIRELESS TELECOMMUNICATION SERVICES -- 0.9% 47,516 Centennial Communications Corp.(1) 287,947 ------------ TOTAL COMMON STOCKS (Cost $26,991,104) 29,888,961 ------------ Principal Amount Value Short-Term Investments -- 3.8% $1,000,000 Devon Energy Corp., 2.87%, 5/1/08(2) $ 999,925 200,000 FNMA Discount Notes, 2.72%, 5/21/08(2) 199,797 ------------ TOTAL SHORT-TERM INVESTMENTS (Cost $1,199,698) 1,199,722 ------------ TOTAL INVESTMENT SECURITIES -- 99.0% (Cost $28,190,802) 31,088,683 ------------ OTHER ASSETS AND LIABILITIES -- 1.0% 295,921 ------------ TOTAL NET ASSETS -- 100.0% $31,384,604 ============ Notes to Schedule of Investments ADR = American Depositary Receipt ETF = Exchange Traded Fund FNMA = Federal National Mortgage Association SPDR = Standard and Poor's Depositary Receipt (1) Non-income producing. (2) The rate indicated is the yield to maturity at purchase. See Notes to Financial Statements. - ------ 16 SHAREHOLDER FEE EXAMPLES (UNAUDITED) Fund shareholders may incur two types of costs: (1) transaction costs, including sales charges (loads) on purchase payments and redemption/exchange fees; and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in your fund and to compare these costs with the ongoing cost of investing in other mutual funds. The example is based on an investment of $1,000 made at the beginning of the period and held for the entire period from November 1, 2007 to April 30, 2008. ACTUAL EXPENSES The table provides information about actual account values and actual expenses for each class. You may use the information, together with the amount you invested, to estimate the expenses that you paid over the period. First, identify the share class you own. Then simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number under the heading "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. If you hold Investor Class shares of any American Century fund, or Institutional Class shares of the American Century Diversified Bond Fund, in an American Century account (i.e., not a financial intermediary or retirement plan account), American Century may charge you a $12.50 semiannual account maintenance fee if the value of those shares is less than $10,000. We will redeem shares automatically in one of your accounts to pay the $12.50 fee. In determining your total eligible investment amount, we will include your investments in all PERSONAL ACCOUNTS (including American Century Brokerage accounts) registered under your Social Security number. PERSONAL ACCOUNTS include individual accounts, joint accounts, UGMA/UTMA accounts, personal trusts, Coverdell Education Savings Accounts and IRAs (including traditional, Roth, Rollover, SEP-, SARSEP- and SIMPLE-IRAs), and certain other retirement accounts. If you have only business, business retirement, employer-sponsored or American Century Brokerage accounts, you are currently not subject to this fee. We will not charge the fee as long as you choose to manage your accounts exclusively online. If you are subject to the Account Maintenance Fee, your account value could be reduced by the fee amount. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The table also provides information about hypothetical account values and hypothetical expenses based on the actual expense ratio of each class of your fund and an assumed rate of return of 5% per year before expenses, which is not the actual return of a fund's share class. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in your fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption/exchange fees. Therefore, the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------ 17 Beginning Ending Account Account Expenses Paid Annualized Value Value During Period(1) Expense 11/1/07 4/30/08 11/1/07 - 4/30/08 Ratio(1) Mid Cap Growth ACTUAL Investor Class $1,000 $911.10 $4.99 1.05% Institutional Class $1,000 $912.00 $4.04 0.85% A Class $1,000 $910.00 $6.17 1.30% B Class (after waiver)(2) $1,000 $906.80 $9.34 1.97% B Class (before waiver) $1,000 $906.80(3) $9.72 2.05% C Class $1,000 $906.90 $9.72 2.05% R Class $1,000 $908.90 $7.36 1.55% HYPOTHETICAL Investor Class $1,000 $1,019.64 $5.27 1.05% Institutional Class $1,000 $1,020.64 $4.27 0.85% A Class $1,000 $1,018.40 $6.52 1.30% B Class (after waiver)(2) $1,000 $1,015.07 $9.87 1.97% B Class (before waiver) $1,000 $1,014.67 $10.27 2.05% C Class $1,000 $1,014.67 $10.27 2.05% R Class $1,000 $1,017.16 $7.77 1.55% Small Cap Growth ACTUAL Investor Class $1,000 $782.70 $5.76 1.30% Institutional Class $1,000 $783.50 $4.88 1.10% A Class (after waiver)(2) $1,000 $782.10 $6.29 1.42% A Class (before waiver) $1,000 $782.10(3) $6.87 1.55% B Class (after waiver)(2) $1,000 $779.70 $9.25 2.09% B Class (before waiver) $1,000 $779.70(3) $10.18 2.30% C Class $1,000 $778.50 $10.17 2.30% R Class $1,000 $780.60 $7.97 1.80% HYPOTHETICAL Investor Class $1,000 $1,018.40 $6.52 1.30% Institutional Class $1,000 $1,019.39 $5.52 1.10% A Class (after waiver)(2) $1,000 $1,017.80 $7.12 1.42% A Class (before waiver) $1,000 $1,017.16 $7.77 1.55% B Class (after waiver)(2) $1,000 $1,014.47 $10.47 2.09% B Class (before waiver) $1,000 $1,013.43 $11.51 2.30% C Class $1,000 $1,013.43 $11.51 2.30% R Class $1,000 $1,015.91 $9.02 1.80% (1) Expenses are equal to the class's annualized expense ratio listed in the table above, multiplied by the average account value over the period, multiplied by 182, the number of days in the most recent fiscal half-year, divided by 366, to reflect the one-half year period. (2) During the six months ended April 30, 2008, the distributor waived a portion of its distribution and service fees. (3) Ending account value assumes the return earned after waiver. The return would have been lower had fees not been waived and may have resulted in a lower ending account value. - ------ 18 STATEMENT OF ASSETS AND LIABILITIES APRIL 30, 2008 (UNAUDITED) Small Cap Mid Cap Growth Growth ASSETS Investment securities, at value (cost of $167,021,769 and $28,190,802, respectively) $192,802,195 $31,088,683 Cash 145,090 98,782 Receivable for investments sold 2,242,643 639,658 Receivable for capital shares sold 6,783 22,591 Dividends and interest receivable 47,504 3,102 ------------ ------------ 195,244,215 31,852,816 ------------ ------------ LIABILITIES Payable for investments purchased 267,829 416,069 Payable for capital shares redeemed 5,351 11,409 Payable for variation margin on futures contracts 8,101 -- Accrued management fees 138,202 32,941 Distribution fees payable 3,020 2,679 Service fees (and distribution fees -- A Class and R Class) payable 6,371 5,114 ------------ ------------ 428,874 468,212 ------------ ------------ NET ASSETS $194,815,341 $31,384,604 ============ ============ See Notes to Financial Statements. - ------ 19 APRIL 30, 2008 (UNAUDITED) Small Cap Mid Cap Growth Growth NET ASSETS CONSIST OF: Capital (par value and paid-in surplus) $164,863,475 $32,619,272 Accumulated net investment loss (277,174) (186,416) Accumulated undistributed net realized gain (loss) on investment transactions 4,266,548 (3,946,133) Net unrealized appreciation on investments 25,962,492 2,897,881 ------------ ------------ $194,815,341 $31,384,604 ============ ============ INVESTOR CLASS, $0.01 PAR VALUE Net assets $1,925,017 $1,825,391 Shares outstanding 141,407 153,455 Net asset value per share $13.61 $11.90 INSTITUTIONAL CLASS, $0.01 PAR VALUE Net assets $161,561,690 $4,811,626 Shares outstanding 11,815,253 402,413 Net asset value per share $13.67 $11.96 A CLASS, $0.01 PAR VALUE Net assets $26,261,514 $20,343,482 Shares outstanding 1,940,689 1,715,099 Net asset value per share $13.53 $11.86 Maximum offering price (net asset value divided by 0.9425) $14.36 $12.58 B CLASS, $0.01 PAR VALUE Net assets $4,842,664 $4,186,217 Shares outstanding 390,100 377,877 Net asset value per share $12.41 $11.08 C CLASS, $0.01 PAR VALUE Net assets $131,389 $129,383 Shares outstanding 9,880 11,151 Net asset value per share $13.30 $11.60 R CLASS, $0.01 PAR VALUE Net assets $93,067 $88,505 Shares outstanding 6,918 7,533 Net asset value per share $13.45 $11.75 See Notes to Financial Statements. - ------ 20 STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) Small Cap Mid Cap Growth Growth INVESTMENT INCOME (LOSS) INCOME: Dividends $ 444,280 $ 46,633 Interest 195,869 32,141 ------------- ------------- 640,149 78,774 ------------- ------------- EXPENSES: Management fees 855,951 229,827 Distribution fees: B Class 19,100 18,301 C Class 509 510 Service fees: B Class 6,367 6,100 C Class 170 170 Distribution and service fees: A Class 34,187 29,887 R Class 248 160 Directors' fees and expenses 2,643 828 Other expenses 302 61 ------------- ------------- 919,477 285,844 ------------- ------------- Amount waived (2,154) (20,654) ------------- ------------- 917,323 265,190 ------------- ------------- NET INVESTMENT INCOME (LOSS) (277,174) (186,416) ------------- ------------- REALIZED AND UNREALIZED GAIN (LOSS) NET REALIZED GAIN (LOSS) ON: Investment transactions 5,755,985 (2,521,606) Futures transactions (448,470) (66,268) ------------- ------------- 5,307,515 (2,587,874) ------------- ------------- CHANGE IN NET UNREALIZED APPRECIATION (DEPRECIATION) ON: Investments (24,259,925) (7,030,110) Futures 53,926 (14,930) ------------- ------------- (24,205,999) (7,045,040) ------------- ------------- NET REALIZED AND UNREALIZED GAIN (LOSS) (18,898,484) (9,632,914) ------------- ------------- NET INCREASE (DECREASE) IN NET ASSETS RESULTING FROM OPERATIONS $(19,175,658) $(9,819,330) ============= ============= See Notes to Financial Statements. - ------ 21 STATEMENT OF CHANGES IN NET ASSETS SIX MONTHS ENDED APRIL 30, 2008 (UNAUDITED) AND YEAR ENDED OCTOBER 31, 2007 Mid Cap Growth Small Cap Growth Increase (Decrease) in Net Assets 2008 2007 2008 2007 OPERATIONS Net investment income (loss) $ (277,174) $ (205,937) $ (186,416) $ (394,903) Net realized gain (loss) 5,307,515 20,994,253 (2,587,874) 7,363,154 Change in net unrealized appreciation (depreciation) (24,205,999) 26,844,008 (7,045,040) 1,941,390 ------------ ------------ ------------ ------------ Net increase (decrease) in net assets resulting from operations (19,175,658) 47,632,324 (9,819,330) 8,909,641 ------------ ------------ ------------ ------------ DISTRIBUTIONS TO SHAREHOLDERS From net realized gains: Investor Class (157,129) (17,063) (169,076) (34,247) Institutional Class (16,583,729) (7,634,579) (1,221,199) (100,277) A Class (2,936,941) (1,979,362) (4,523,300) (2,404,950) B Class (596,144) (373,134) (972,995) (410,373) C Class (14,246) (7,699) (26,021) (7,151) R Class (10,685) (1,280) (6,517) (1,413) ------------ ------------ ------------ ------------ Decrease in net assets from distributions (20,298,874) (10,013,117) (6,919,108) (2,958,411) ------------ ------------ ------------ ------------ CAPITAL SHARE TRANSACTIONS Net increase (decrease) in net assets from capital share transactions 17,664,857 (3,715,693) 1,957,210 (10,361,918) ------------ ------------ ------------ ------------ NET INCREASE (DECREASE) IN NET ASSETS (21,809,675) 33,903,514 (14,781,228) (4,410,688) NET ASSETS Beginning of period 216,625,016 182,721,502 46,165,832 50,576,520 ------------ ------------ ------------ ------------ End of period $194,815,341 $216,625,016 $ 31,384,604 $ 46,165,832 ============ ============ ============ ============ Accumulated net investment loss $(277,174) -- $(186,416) -- ============ ============ ============ ============ See Notes to Financial Statements. - ------ 22 NOTES TO FINANCIAL STATEMENTS APRIL 30, 2008 (UNAUDITED) 1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES ORGANIZATION -- American Century Mutual Funds, Inc. (the corporation) is registered under the Investment Company Act of 1940 (the 1940 Act) as an open-end management investment company. American Century-Mason Street Mid Cap Growth Fund (Mid Cap Growth) and American Century-Mason Street Small Cap Growth Fund (Small Cap Growth) (the funds) are two funds in a series issued by the corporation. The funds are diversified under the 1940 Act. The funds' investment objective is to seek long-term capital growth. Mid Cap Growth invests primarily in stocks of mid-sized companies. Small Cap Growth invests primarily in stocks of smaller market capitalization companies. The following is a summary of the funds' significant accounting policies. MULTIPLE CLASS -- The funds are authorized to issue the Investor Class, the Institutional Class, the A Class, the B Class, the C Class and the R Class. The A Class may incur an initial sales charge. The A Class, B Class and C Class may be subject to a contingent deferred sales charge. The share classes differ principally in their respective sales charges and distribution and shareholder servicing expenses and arrangements. All shares of each fund represent an equal pro rata interest in the net assets of the class to which such shares belong, and have identical voting, dividend, liquidation and other rights and the same terms and conditions, except for class specific expenses and exclusive rights to vote on matters affecting only individual classes. Income, non-class specific expenses, and realized and unrealized capital gains and losses of the funds are allocated to each class of shares based on their relative net assets. SECURITY VALUATIONS -- Securities traded primarily on a principal securities exchange are valued at the last reported sales price, or at the mean of the latest bid and asked prices where no last sales price is available. Depending on local convention or regulation, securities traded over-the-counter are valued at the mean of the latest bid and asked prices, the last sales price, or the official close price. Debt securities not traded on a principal securities exchange are valued through a commercial pricing service or at the mean of the most recent bid and asked prices. Debt securities maturing within 60 days may be valued at cost, plus or minus any amortized discount or premium. Discount notes may be valued through a commercial pricing service or at amortized cost, which approximates fair value. Securities traded on foreign securities exchanges and over-the-counter markets are normally completed before the close of business on days that the New York Stock Exchange (the Exchange) is open and may also take place on days when the Exchange is not open. If an event occurs after the value of a security was established but before the net asset value per share was determined that was likely to materially change the net asset value, that security would be valued as determined in accordance with procedures adopted by the Board of Directors. If the funds determine that the market price of a portfolio security is not readily available, or that the valuation methods mentioned above do not reflect the security's fair value, such security is valued as determined by the Board of Directors or its designee, in accordance with procedures adopted by the Board of Directors, if such determination would materially impact a fund's net asset value. Certain other circumstances may cause the funds to use alternative procedures to value a security such as: a security has been declared in default; trading in a security has been halted during the trading day; or there is a foreign market holiday and no trading will commence. SECURITY TRANSACTIONS -- For financial reporting purposes, security transactions are accounted for as of the trade date. Net realized gains and losses are determined on the identified cost basis, which is also used for federal income tax purposes. INVESTMENT INCOME -- Dividend income less foreign taxes withheld, if any, is recorded as of the ex-dividend date. Distributions received on securities that represent a return of capital or capital gain are recorded as a reduction of cost of investments and/or as a realized gain. The funds estimate the components of distributions received that may be considered nontaxable distributions or capital gain distributions for income tax purposes. Interest income is recorded on the accrual basis and includes accretion of discounts and amortization of premiums. FUTURES CONTRACTS -- The funds may enter into futures contracts in order to manage the funds' exposure to changes in market conditions. One of the risks of entering into futures contracts is the possibility that the change in value of the contract may not correlate with the changes in value of the underlying securities. Upon entering into a futures contract, the funds are required to deposit either cash or securities in an amount equal to a certain percentage of the contract value (initial margin). Subsequent payments (variation margin) are made or received daily, in cash, by the funds. The variation margin is equal to the daily change in the contract value and is recorded as unrealized gains - ------ 23 and losses. The funds recognize a realized gain or loss when the contract is closed or expires. Net realized and unrealized gains or losses occurring during the holding period of futures contracts are a component of realized gain (loss) on futures transactions and unrealized appreciation (depreciation) on futures, respectively. INCOME TAX STATUS -- It is each fund's policy to distribute substantially all net investment income and net realized gains to shareholders and to otherwise qualify as a regulated investment company under provisions of the Internal Revenue Code. The funds are no longer subject to examination by tax authorities for years prior to 2004. At this time, management has not identified any uncertain tax positions for which it is reasonably possible that the total amounts of unrecognized tax benefits will significantly change in the next twelve months. Accordingly, no provision has been made for federal or state income taxes. Interest and penalties associated with any federal or state income tax obligations, if any, are recorded as interest expense. DISTRIBUTIONS TO SHAREHOLDERS -- Distributions to shareholders are recorded on the ex-dividend date. Distributions from net investment income and net realized gains, if any, are generally declared and paid annually. INDEMNIFICATIONS -- Under the corporation's organizational documents, its officers and directors are indemnified against certain liabilities arising out of the performance of their duties to the funds. In addition, in the normal course of business, the funds enter into contracts that provide general indemnifications. The funds' maximum exposure under these arrangements is unknown as this would involve future claims that may be made against the funds. The risk of material loss from such claims is considered by management to be remote. USE OF ESTIMATES -- The financial statements are prepared in conformity with accounting principles generally accepted in the United States of America, which may require management to make certain estimates and assumptions at the date of the financial statements. Actual results could differ from these estimates. 2. FEES AND TRANSACTIONS WITH RELATED PARTIES MANAGEMENT FEES -- The corporation has entered into a Management Agreement with American Century Investment Management, Inc. (ACIM) (the investment advisor), under which ACIM provides the funds with investment advisory and management services in exchange for a single, unified management fee (the fee) per class. The Agreement provides that all expenses of the funds, except brokerage commissions, taxes, interest, fees and expenses of those directors who are not considered "interested persons" as defined in the 1940 Act (including counsel fees) and extraordinary expenses, will be paid by ACIM. The fee is computed and accrued daily based on the daily net assets of each specific class of shares of each fund and paid monthly in arrears. For funds with a stepped fee schedule, the rate of the fee is determined by applying a fee rate calculation formula. This formula takes into account all of the investment advisor's assets under management in each fund's investment strategy (strategy assets) to calculate the appropriate fee rate for each fund. The strategy assets include each fund's assets and the assets of other clients of the investment advisor that are not in the American Century family of funds, but that have the same investment team and investment strategy. The annual management fee schedule for Mid Cap Growth ranges from 1.00% to 1.05% for the Investor Class, A Class, B Class, C Class and R Class. The annual management fee schedule for Small Cap Growth ranges from 1.10% to 1.30% for the Investor Class, A Class, B Class, C Class and R Class. The Institutional Class is 0.20% less at each point within the range. The effective annual management fee for each class of each fund for the six months ended April 30, 2008, was as follows: Investor, A, B, C & R Institutional Mid Cap Growth 1.05% 0.85% Small Cap Growth 1.30% 1.10% ACIM has entered into a Subadvisory Agreement with Mason Street Advisors LLC (the subadvisor) on behalf of the funds. The subadvisor makes investment decisions for the funds in accordance with the funds' investment objectives, policies, and restrictions under the supervision of ACIM and the Board of Directors. ACIM pays all costs associated with retaining Mason Street as the subadvisor of the funds. - ------ 24 DISTRIBUTION AND SERVICE FEES -- The Board of Directors has adopted a separate Master Distribution and Individual Shareholder Services Plan for each of the A Class, B Class, C Class and R Class (collectively the plans), pursuant to Rule 12b-1 of the 1940 Act. The plans provide that the A Class and the R Class will pay American Century Investment Services, Inc. (ACIS) an annual distribution and service fee of 0.25% for the A Class and 0.50% for the R Class. The plans provide that the B Class and C Class will each pay ACIS an annual distribution fee of 0.75% and service fee of 0.25%. The fees are computed and accrued daily based on each class's daily net assets and paid monthly in arrears. The distribution fee provides compensation for expenses incurred in connection with distributing shares of the classes including, but not limited to, payments to brokers, dealers, and financial institutions that have entered into sales agreements with respect to shares of the funds. The service fee provides compensation for individual shareholder services rendered by broker/dealers or other independent financial intermediaries. ACIS voluntarily waived a portion of the distribution and service fees through March 31, 2008, by 0.10% for the B Class of Mid Cap Growth and by 0.15% and 0.25% for the A Class and B Class of Small Cap Growth, respectively. The total amount of the waivers for the six months ended April 30, 2008, was as follows: A B Mid Cap Growth -- $2,154 Small Cap Growth $15,421 $5,233 Fees incurred under the plans during the six months ended April 30, 2008, are detailed in the Statement of Operations. RELATED PARTIES -- Certain officers and directors of the corporation are also officers and/or directors, and, as a group, controlling stockholders of American Century Companies, Inc. (ACC), the parent of the corporation's investment advisor, ACIM, the distributor of the corporation, ACIS, and the corporation's transfer agent, American Century Services, LLC. Prior to December 12, 2007, the funds had a bank line of credit agreement with JPMorgan Chase Bank (JPMCB). JPMCB is a custodian of the funds and a wholly owned subsidiary of JPMorgan Chase & Co. (JPM). JPM is an equity investor in ACC. 3. INVESTMENT TRANSACTIONS Investment transactions, excluding short-term investments, for the six months ended April 30, 2008, were as follows: Mid Cap Growth Small Cap Growth Purchases $39,250,157 $20,655,458 Proceeds from sales $40,810,857 $24,434,858 - ------ 25 4. CAPITAL SHARE TRANSACTIONS Transactions in shares of the funds were as follows: Six months ended Year ended April 30, 2008 October 31, 2007 Shares Amount Shares Amount Mid Cap Growth INVESTOR CLASS/ SHARES AUTHORIZED 55,000,000 55,000,000 =========== =========== Sold 92,873 $ 1,337,014 53,696 $ 861,276 Issued in reinvestment of distributions 11,084 157,061 1,253 17,063 Redeemed (29,209) (389,565) (10,923) (161,735) ----------- ------------ ----------- ------------- 74,748 1,104,510 44,026 716,604 ----------- ------------ ----------- ------------- INSTITUTIONAL CLASS/ SHARES AUTHORIZED 50,000,000 50,000,000 =========== =========== Issued in reinvestment of distributions 1,166,226 16,582,782 559,720 7,634,579 ----------- ------------ ----------- ------------- A CLASS/ SHARES AUTHORIZED 20,000,000 20,000,000 =========== =========== Sold 117,688 1,604,996 356,472 5,183,353 Issued in reinvestment of distributions 205,493 2,897,444 141,971 1,929,392 Redeemed (328,671) (4,541,709) (1,221,667) (17,603,091) ----------- ------------ ----------- ------------- (5,490) (39,269) (723,224) (10,490,346) ----------- ------------ ----------- ------------- B CLASS/ SHARES AUTHORIZED 10,000,000 10,000,000 =========== =========== Sold 5,556 70,683 36,843 481,205 Issued in reinvestment of distributions 45,603 591,014 29,049 368,634 Redeemed (50,839) (639,825) (190,268) (2,543,506) ----------- ------------ ----------- ------------- 320 21,872 (124,376) (1,693,667) ----------- ------------ ----------- ------------- C CLASS/ SHARES AUTHORIZED 10,000,000 10,000,000 =========== =========== Sold 1,158 15,080 6,298 91,015 Issued in reinvestment of distributions 764 10,607 365 4,935 Redeemed (2,477) (33,967) (3,551) (49,016) ----------- ------------ ----------- ------------- (555) (8,280) 3,112 46,934 ----------- ------------ ----------- ------------- R CLASS/ SHARES AUTHORIZED 10,000,000 10,000,000 =========== =========== Sold 401 5,353 6,832 95,371 Issued in reinvestment of distributions 762 10,685 94 1,280 Redeemed (1,076) (12,796) (1,786) (26,448) ----------- ------------ ----------- ------------- 87 3,242 5,140 70,203 ----------- ------------ ----------- ------------- Net increase (decrease) 1,235,336 $17,664,857 (235,602) $(3,715,693) =========== ============ =========== ============= - ------ 26 Six months ended Year ended April 30, 2008 October 31, 2007 Shares Amount Shares Amount Small Cap Growth INVESTOR CLASS/ SHARES AUTHORIZED 55,000,000 55,000,000 =========== =========== Sold 117,790 $ 1,485,277 24,900 $ 414,030 Issued in reinvestment of distributions 12,377 169,076 2,202 34,247 Redeemed (31,867) (390,450) (8,573) (138,996) ----------- ------------ ----------- ------------- 98,300 1,263,903 18,529 309,281 ----------- ------------ ----------- ------------- INSTITUTIONAL CLASS/ SHARES AUTHORIZED 50,000,000 50,000,000 =========== =========== Sold 60,188 757,530 432,499 6,911,741 Issued in reinvestment of distributions 27,389 375,778 2,388 37,213 Redeemed (134,262) (1,734,408) (58,457) (946,327) ----------- ------------ ----------- ------------- (46,685) (601,100) 376,430 6,002,627 ----------- ------------ ----------- ------------- A CLASS/ SHARES AUTHORIZED 20,000,000 20,000,000 =========== =========== Sold 121,994 1,610,628 278,465 4,485,744 Issued in reinvestment of distributions 318,209 4,337,860 145,027 2,253,726 Redeemed (397,007) (5,012,639) (1,360,627) (22,092,686) ----------- ------------ ----------- ------------- 43,196 935,849 (937,135) (15,353,216) ----------- ------------ ----------- ------------- B CLASS/ SHARES AUTHORIZED 10,000,000 10,000,000 =========== =========== Sold 5,643 66,111 19,279 290,474 Issued in reinvestment of distributions 73,823 941,984 26,709 395,563 Redeemed (62,291) (738,633) (134,473) (2,051,933) ----------- ------------ ----------- ------------- 17,175 269,462 (88,485) (1,365,896) ----------- ------------ ----------- ------------- C CLASS/ SHARES AUTHORIZED 10,000,000 10,000,000 =========== =========== Sold 1,470 16,797 3,989 62,568 Issued in reinvestment of distributions 1,945 26,021 447 6,897 Redeemed (1,721) (19,974) (2,361) (37,369) ----------- ------------ ----------- ------------- 1,694 22,844 2,075 32,096 ----------- ------------ ----------- ------------- R CLASS/ SHARES AUTHORIZED 10,000,000 10,000,000 =========== =========== Sold 4,737 60,037 816 12,595 Issued in reinvestment of distributions 482 6,517 91 1,413 Redeemed (26) (302) (50) (818) ----------- ------------ ----------- ------------- 5,193 66,252 857 13,190 ----------- ------------ ----------- ------------- Net increase (decrease) 118,873 $ 1,957,210 (627,729) $(10,361,918) =========== ============ =========== ============= 5. BANK LINE OF CREDIT Effective December 12, 2007, the funds, along with certain other funds managed by ACIM or American Century Global Investment Management, Inc. (ACGIM), have a $500,000,000 unsecured bank line of credit agreement with Bank of America, N.A. Prior to December 12, 2007, the funds, along with certain other funds managed by ACIM or ACGIM, had a $500,000,000 unsecured bank line of credit agreement with JPMCB. The funds may borrow money for temporary or emergency purposes to fund shareholder redemptions. Borrowings under the agreement, which is subject to annual renewal, bear interest at the Federal Funds rate plus 0.40%. The funds did not borrow from the line during the six months ended April 30, 2008. - ------ 27 6. RISK FACTORS Small Cap Growth concentrates its investments in common stocks of small companies. Because of this, Small Cap Growth may be subject to greater risk and market fluctuations than a fund investing in larger, more established companies. Small Cap Growth's performance may be affected by investments in initial public offerings (IPOs). The impact of IPOs on a fund's performance depends on the strength of the IPO market and the size of the fund. IPOs may have less impact on a fund's performance as its assets grow. 7. FEDERAL TAX INFORMATION The book-basis character of distributions made during the year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. These differences reflect the differing character of certain income items and net realized gains and losses for financial statement and tax purposes, and may result in reclassification among certain capital accounts on the financial statements. As of April 30, 2008, the components of investments for federal income tax purposes were as follows: Mid Cap Growth Small Cap Growth Federal tax cost of investments $167,042,202 $28,564,693 ============= ============= Gross tax appreciation of investments $ 38,395,603 $ 4,822,551 Gross tax depreciation of investments (12,635,610) (2,298,561) ------------- ------------- Net tax appreciation (depreciation) of investments $ 25,759,993 $ 2,523,990 ============= ============= The difference between book-basis and tax-basis cost and unrealized appreciation (depreciation) is attributable primarily to the tax deferral of losses on wash sales. 8. RECENTLY ISSUED ACCOUNTING STANDARDS The Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" (FAS 157), in September 2006, which is effective for fiscal years beginning after November 15, 2007. FAS 157 defines fair value, establishes a framework for measuring fair value and expands the required financial statement disclosures about fair value measurements. Management is currently evaluating the impact that adopting FAS 157 will have on the financial statement disclosures. In March 2008, the FASB issued Statement of Financial Accounting Standards No. 161, "Disclosures about Derivative Instruments and Hedging Activities -- an amendment of FASB Statement No. 133" (FAS 161). FAS 161 is effective for fiscal years beginning after November 15, 2008. FAS 161 amends and expands disclosures about derivative instruments and hedging activities. FAS 161 requires qualitative disclosures about the objectives and strategies of derivative instruments, quantitative disclosures about the fair value amounts of and gains and losses on derivative instruments, and disclosures of credit-risk-related contingent features in hedging activities. Management is currently evaluating the impact that adopting FAS 161 will have on the financial statement disclosures. - ------ 28 FINANCIAL HIGHLIGHTS Mid Cap Growth Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $16.58 $13.76 $14.78 -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.03) (0.03) (0.01) Net Realized and Unrealized Gain (Loss) (1.38) 3.61 (1.01) -------- -------- -------- Total From Investment Operations (1.41) 3.58 (1.02) -------- -------- -------- Distributions From Net Realized Gains (1.56) (0.76) -- -------- -------- -------- Net Asset Value, End of Period $13.61 $16.58 $13.76 ======== ======== ======== TOTAL RETURN(4) (8.89)% 27.19% (6.90)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.05%(5) 1.05% 1.05%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.39)%(5) (0.19)% (0.19)%(5) Portfolio Turnover Rate 21% 77% 52% Net Assets, End of Period (in thousands) $1,925 $1,105 $311 (1) Six months ended April 30, 2008 (unaudited). (2) April 3, 2006 (commencement of sale) through October 31, 2006. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 29 Mid Cap Growth Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $16.63 $13.78 $14.78 -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.01) --(4) --(4) Net Realized and Unrealized Gain (Loss) (1.39) 3.61 (1.00) -------- -------- -------- Total From Investment Operations (1.40) 3.61 (1.00) -------- -------- -------- Distributions From Net Realized Gains (1.56) (0.76) -- -------- -------- -------- Net Asset Value, End of Period $13.67 $16.63 $13.78 ======== ======== ======== TOTAL RETURN(5) (8.80)% 27.38% (6.77)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 0.85%(6) 0.85% 0.85%(6) Ratio of Net Investment Income (Loss) to Average Net Assets (0.19)%(6) 0.01% 0.01%(6) Portfolio Turnover Rate 21% 77% 52% Net Assets, End of Period (in thousands) $161,562 $177,128 $138,986 (1) Six months ended April 30, 2008 (unaudited). (2) April 3, 2006 (commencement of sale) through October 31, 2006. (3) Computed using average shares outstanding throughout the period. (4) Per-share amount was less than $0.005. (5) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (6) Annualized. See Notes to Financial Statements. - ------ 30 Mid Cap Growth A Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $16.51 $13.74 $14.83 $13.50 $12.78 $9.83 $12.93 -------- -------- -------- -------- -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.04) (0.06) (0.04) (0.01) (0.10) (0.09) (0.09) Net Realized and Unrealized Gain (Loss) (1.38) 3.59 (1.05) 2.65 0.82 3.04 (3.01) -------- -------- -------- -------- -------- -------- -------- Total From Investment Operations (1.42) 3.53 (1.09) 2.64 0.72 2.95 (3.10) -------- -------- -------- -------- -------- -------- -------- Distributions From Net Realized Gains (1.56) (0.76) -- (1.31) -- -- -- -------- -------- -------- -------- -------- -------- -------- Net Asset Value, End of Period $13.53 $16.51 $13.74 $14.83 $13.50 $12.78 $9.83 ======== ======== ======== ======== ======== ======== ======== TOTAL RETURN(4) (9.00)% 26.85% (7.35)% 20.28% 5.63% 30.01% (23.98)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.30%(5) 1.30% 1.30%(5) 1.29% 1.30%(6) 1.30%(6) 1.30%(6) Ratio of Operating Expenses to Average Net Assets (Before Expense Waiver) 1.30%(5) 1.30% 1.30%(5) 1.29% 1.36% 1.40% 1.55% Ratio of Net Investment Income (Loss) to Average Net Assets (0.64)%(5) (0.44)% (0.44)%(5) (0.08)% (0.79)%(6) (0.74)%(6) (0.86)%(6) Ratio of Net Investment Income (Loss) to Average Net Assets (Before Expense Waiver) (0.64)%(5) (0.44)% (0.44)%(5) (0.08)% (0.85)% (0.84)% (1.11)% Portfolio Turnover Rate 21% 77% 52% 89% 70% 72% 35% Net Assets, End of Period (in thousands) $26,262 $32,134 $36,675 $193,019 $163,069 $148,862 $105,728 (1) Six months ended April 30, 2008 (unaudited). (2) April 1, 2006 through October 31, 2006. The fund's fiscal year end was changed from March 31 to October 31, resulting in a seven-month annual reporting period. For the years before October 31, 2006, the fund's fiscal year end was March 31. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) The investment advisor voluntarily agreed to waive fees and absorb certain operating expenses. See Notes to Financial Statements. - ------ 31 Mid Cap Growth B Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $15.33 $12.89 $13.96 $12.86 $12.25 $9.49 $12.55 -------- -------- -------- -------- -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.08) (0.15) (0.08) (0.10) (0.18) (0.16) (0.16) Net Realized and Unrealized Gain (Loss) (1.28) 3.35 (0.99) 2.51 0.79 2.92 (2.90) -------- -------- -------- -------- -------- -------- -------- Total From Investment Operations (1.36) 3.20 (1.07) 2.41 0.61 2.76 (3.06) -------- -------- -------- -------- -------- -------- -------- Distributions From Net Realized Gains (1.56) (0.76) -- (1.31) -- -- -- -------- -------- -------- -------- -------- -------- -------- Net Asset Value, End of Period $12.41 $15.33 $12.89 $13.96 $12.86 $12.25 $9.49 ======== ======== ======== ======== ======== ======== ======== TOTAL RETURN(4) (9.32)% 26.02% (7.66)% 19.48% 4.98% 29.08% (24.38)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.97%(5)(6) 1.95%(6) 1.95%(5)(6) 1.95%(7) 1.95%(7) 1.95%(7) 1.95%(7) Ratio of Operating Expenses to Average Net Assets (Before Expense Waiver) 2.05%(5) 2.05% 2.05%(5) 2.02% 2.04% 2.05% 2.20% Ratio of Net Investment Income (Loss) to Average Net Assets (1.31)%(5)(6) (1.09)%(6) (1.09)%(5)(6) (0.78)%(7) (1.44)%(7) (1.40)%(7) (1.52)%(7) Ratio of Net Investment Income (Loss) to Average Net Assets (Before Expense Waiver) (1.39)%(5) (1.19)% (1.19)%(5) (0.85)% (1.53)% (1.50)% (1.77)% Portfolio Turnover Rate 21% 77% 52% 89% 70% 72% 35% Net Assets, End of Period (in thousands) $4,843 $5,975 $6,626 $9,032 $9,839 $10,128 $7,978 (1) Six months ended April 30, 2008 (unaudited). (2) April 1, 2006 through October 31, 2006. The fund's fiscal year end was changed from March 31 to October 31, resulting in a seven-month annual reporting period. For the years before October 31, 2006, the fund's fiscal year end was March 31. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Effective April 1, 2006, the distributor voluntarily waived a portion of its distribution and service fees. (7) The investment advisor voluntarily agreed to waive fees and absorb certain operating expenses. See Notes to Financial Statements. - ------ 32 Mid Cap Growth C Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $16.31 $13.68 $14.78 -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.09) (0.17) (0.10) Net Realized and Unrealized Gain (Loss) (1.36) 3.56 (1.00) -------- -------- -------- Total From Investment Operations (1.45) 3.39 (1.10) -------- -------- -------- Distributions From Net Realized Gains (1.56) (0.76) -- -------- -------- -------- Net Asset Value, End of Period $13.30 $16.31 $13.68 ======== ======== ======== TOTAL RETURN(4) (9.31)% 25.90% (7.44)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.05%(5) 2.05% 2.05%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (1.39)%(5) (1.19)% (1.19)%(5) Portfolio Turnover Rate 21% 77% 52% Net Assets, End of Period (in thousands) $131 $170 $100 (1) Six months ended April 30, 2008 (unaudited). (2) April 3, 2006 (commencement of sale) through October 31, 2006. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 33 Mid Cap Growth R Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $16.44 $13.72 $14.78 -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.06) (0.10) (0.06) Net Realized and Unrealized Gain (Loss) (1.37) 3.58 (1.00) -------- -------- -------- Total From Investment Operations (1.43) 3.48 (1.06) -------- -------- -------- Distributions From Net Realized Gains (1.56) (0.76) -- -------- -------- -------- Net Asset Value, End of Period $13.45 $16.44 $13.72 ======== ======== ======== TOTAL RETURN(4) (9.11)% 26.51% (7.17)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.55%(5) 1.55% 1.55%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.89)%(5) (0.69)% (0.69)%(5) Portfolio Turnover Rate 21% 77% 52% Net Assets, End of Period (in thousands) $93 $112 $23 (1) Six months ended April 30, 2008 (unaudited). (2) April 3, 2006 (commencement of sale) through October 31, 2006. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 34 Small Cap Growth Investor Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $18.26 $16.03 $16.86 -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.05) (0.11) (0.06) Net Realized and Unrealized Gain (Loss) (3.55) 3.29 (0.77) -------- -------- -------- Total From Investment Operations (3.60) 3.18 (0.83) -------- -------- -------- Distributions From Net Realized Gains (2.76) (0.95) -- -------- -------- -------- Net Asset Value, End of Period $11.90 $18.26 $16.03 ======== ======== ======== TOTAL RETURN(4) (21.73)% 20.93% (4.92)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.30%(5) 1.30% 1.30%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.87)%(5) (0.66)% (0.80)%(5) Portfolio Turnover Rate 60% 119% 42% Net Assets, End of Period (in thousands) $1,825 $1,007 $587 (1) Six months ended April 30, 2008 (unaudited). (2) April 3, 2006 (commencement of sale) through October 31, 2006. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 35 Small Cap Growth Institutional Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $18.33 $16.05 $16.86 -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.04) (0.08) (0.05) Net Realized and Unrealized Gain (Loss) (3.57) 3.31 (0.76) -------- -------- -------- Total From Investment Operations (3.61) 3.23 (0.81) -------- -------- -------- Distributions From Net Realized Gains (2.76) (0.95) -- -------- -------- -------- Net Asset Value, End of Period $11.96 $18.33 $16.05 ======== ======== ======== TOTAL RETURN(4) (21.65)% 21.16% (4.80)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.10%(5) 1.10% 1.10%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (0.67)%(5) (0.46)% (0.60)%(5) Portfolio Turnover Rate 60% 119% 42% Net Assets, End of Period (in thousands) $4,812 $8,230 $1,166 (1) Six months ended April 30, 2008 (unaudited). (2) April 3, 2006 (commencement of sale) through October 31, 2006. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 36 Small Cap Growth A Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $18.23 $16.02 $17.02 $15.27 $14.38 $10.11 $13.38 -------- -------- -------- -------- -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.07) (0.12) (0.08) (0.14) (0.15) (0.15) (0.12) Net Realized and Unrealized Gain (Loss) (3.54) 3.28 (0.92) 3.53 1.75 4.42 (3.15) -------- -------- -------- -------- -------- -------- -------- Total From Investment Operations (3.61) 3.16 (1.00) 3.39 1.60 4.27 (3.27) -------- -------- -------- -------- -------- -------- -------- Distributions From Net Realized Gains (2.76) (0.95) -- (1.64) (0.71) -- -- -------- -------- -------- -------- -------- -------- -------- Net Asset Value, End of Period $11.86 $18.23 $16.02 $17.02 $15.27 $14.38 $10.11 ======== ======== ======== ======== ======== ======== ======== TOTAL RETURN(4) (21.79)% 20.75% (5.88)% 23.08% 10.99% 42.24% (24.44)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.42%(5)(6) 1.40%(6) 1.40%(5)(6) 1.40%(7) 1.40%(7) 1.40%(7) 1.40%(7) Ratio of Operating Expenses to Average Net Assets (Before Expense Waiver) 1.55%(5) 1.55% 1.55%(5) 1.86% 2.03% 2.21% 2.29% Ratio of Net Investment Income (Loss) to Average Net Assets (0.99)%(5)(6) (0.76)%(6) (0.90)%(5)(6) (0.82)%(7) (1.05)%(7) (1.16)%(7) (1.10)%(7) Ratio of Net Investment Income (Loss) to Average Net Assets (Before Expense Waiver) (1.12)%(5) (0.91)% (1.05)%(5) (1.28)% (1.68)% (1.97)% (1.99)% Portfolio Turnover Rate 60% 119% 42% 81% 86% 98% 49% Net Assets, End of Period (in thousands) $20,343 $30,483 $41,798 $55,085 $33,791 $23,914 $14,623 (1) Six months ended April 30, 2008 (unaudited). (2) April 1, 2006 through October 31, 2006. The fund's fiscal year end was changed from March 31 to October 31, resulting in a seven-month annual reporting period. For the years before October 31, 2006, the fund's fiscal year end was March 31. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Effective April 1, 2006, the distributor voluntarily waived a portion of its distribution and service fees. (7) The investment advisor voluntarily agreed to waive fees and absorb certain operating expenses. See Notes to Financial Statements. - ------ 37 Small Cap Growth B Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) 2006 2005 2004 2003 PER-SHARE DATA Net Asset Value, Beginning of Period $17.28 $15.32 $16.34 $14.81 $14.06 $9.95 $13.25 -------- -------- -------- -------- -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.10) (0.22) (0.14) (0.24) (0.24) (0.23) (0.19) Net Realized and Unrealized Gain (Loss) (3.34) 3.13 (0.88) 3.41 1.70 4.34 (3.11) -------- -------- -------- -------- -------- -------- -------- Total From Investment Operations (3.44) 2.91 (1.02) 3.17 1.46 4.11 (3.30) -------- -------- -------- -------- -------- -------- -------- Distributions From Net Realized Gains (2.76) (0.95) -- (1.64) (0.71) -- -- -------- -------- -------- -------- -------- -------- -------- Net Asset Value, End of Period $11.08 $17.28 $15.32 $16.34 $14.81 $14.06 $9.95 ======== ======== ======== ======== ======== ======== ======== TOTAL RETURN(4) (22.03)% 20.02% (6.24)% 22.29% 10.23% 41.31% (24.91)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.09%(5)(6) 2.05%(6) 2.05%(5)(6) 2.05%(7) 2.05%(7) 2.05%(7) 2.05%(7) Ratio of Operating Expenses to Average Net Assets (Before Expense Waiver) 2.30%(5) 2.30% 2.30%(5) 2.51% 2.68% 2.86% 2.94% Ratio of Net Investment Income (Loss) to Average Net Assets (1.66)%(5)(6) (1.41)%(6) (1.55)%(5)(6) (1.48)%(7) (1.70)%(7) (1.81)%(7) (1.74)%(7) Ratio of Net Investment Income (Loss) to Average Net Assets (Before Expense Waiver) (1.87)%(5) (1.66)% (1.80)%(5) (1.94)% (2.33)% (2.62)% (2.63)% Portfolio Turnover Rate 60% 119% 42% 81% 86% 98% 49% Net Assets, End of Period (in thousands) $4,186 $6,233 $6,884 $8,284 $6,986 $6,066 $3,674 (1) Six months ended April 30, 2008 (unaudited). (2) April 1, 2006 through October 31, 2006. The fund's fiscal year end was changed from March 31 to October 31, resulting in a seven-month annual reporting period. For the years before October 31, 2006, the fund's fiscal year end was March 31. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. (6) Effective April 1, 2006, the distributor voluntarily waived a portion of its distribution and service fees. (7) The investment advisor voluntarily agreed to waive fees and absorb certain operating expenses. See Notes to Financial Statements. - ------ 38 Small Cap Growth C Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $17.97 $15.94 $16.86 -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.12) (0.27) (0.16) Net Realized and Unrealized Gain (Loss) (3.49) 3.25 (0.76) -------- -------- -------- Total From Investment Operations (3.61) 2.98 (0.92) -------- -------- -------- Distributions From Net Realized Gains (2.76) (0.95) -- -------- -------- -------- Net Asset Value, End of Period $11.60 $17.97 $15.94 ======== ======== ======== TOTAL RETURN(4) (22.15)% 19.67% (5.46)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 2.30%(5) 2.30% 2.30%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (1.87)%(5) (1.66)% (1.80)%(5) Portfolio Turnover Rate 60% 119% 42% Net Assets, End of Period (in thousands) $129 $170 $118 (1) Six months ended April 30, 2008 (unaudited). (2) April 3, 2006 (commencement of sale) through October 31, 2006. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any, and does not reflect applicable sales charges. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 39 Small Cap Growth R Class For a Share Outstanding Throughout the Years Ended October 31 (except as noted) 2008(1) 2007 2006(2) PER-SHARE DATA Net Asset Value, Beginning of Period $18.12 $15.98 $16.86 -------- -------- -------- Income From Investment Operations Net Investment Income (Loss)(3) (0.08) (0.19) (0.12) Net Realized and Unrealized Gain (Loss) (3.53) 3.28 (0.76) -------- -------- -------- Total From Investment Operations (3.61) 3.09 (0.88) -------- -------- -------- Distributions From Net Realized Gains (2.76) (0.95) -- -------- -------- -------- Net Asset Value, End of Period $11.75 $18.12 $15.98 ======== ======== ======== TOTAL RETURN(4) (21.94)% 20.34% (5.22)% RATIOS/SUPPLEMENTAL DATA Ratio of Operating Expenses to Average Net Assets 1.80%(5) 1.80% 1.80%(5) Ratio of Net Investment Income (Loss) to Average Net Assets (1.37)%(5) (1.16)% (1.30)%(5) Portfolio Turnover Rate 60% 119% 42% Net Assets, End of Period (in thousands) $89 $42 $24 (1) Six months ended April 30, 2008 (unaudited). (2) April 3, 2006 (commencement of sale) through October 31, 2006. (3) Computed using average shares outstanding throughout the period. (4) Total return assumes reinvestment of net investment income and capital gains distributions, if any. Total returns for periods less than one year are not annualized. The total return of the classes may not precisely reflect the class expense differences because of the impact of calculating the net asset values to two decimal places. If net asset values were calculated to three decimal places, the total return differences would more closely reflect the class expense differences. The calculation of net asset values to two decimal places is made in accordance with SEC guidelines and does not result in any gain or loss of value between one class and another. (5) Annualized. See Notes to Financial Statements. - ------ 40 ADDITIONAL INFORMATION RETIREMENT ACCOUNT INFORMATION As required by law, any distributions you receive from an IRA or certain 403(b), 457 and qualified plans [those not eligible for rollover to an IRA or to another qualified plan] are subject to federal income tax withholding, unless you elect not to have withholding apply. Tax will be withheld on the total amount withdrawn even though you may be receiving amounts that are not subject to withholding, such as nondeductible contributions. In such case, excess amounts of withholding could occur. You may adjust your withholding election so that a greater or lesser amount will be withheld. If you don't want us to withhold on this amount, you must notify us to not withhold the federal income tax. Even if you plan to roll over the amount you withdraw to another tax-deferred account, the withholding rate still applies to the withdrawn amount unless we have received notice not to withhold federal income tax prior to the withdrawal. You may notify us in writing or in certain situations by telephone or through other electronic means. You have the right to revoke your withholding election at any time and any election you make may remain in effect until revoked by filing a new election. Remember, even if you elect not to have income tax withheld, you are liable for paying income tax on the taxable portion of your withdrawal. If you elect not to have income tax withheld or you don't have enough income tax withheld, you may be responsible for payment of estimated tax. You may incur penalties under the estimated tax rules if your withholding and estimated tax payments are not sufficient. State tax will be withheld if, at the time of your distribution, your address is within one of the mandatory withholding states and you have federal income tax withheld. State taxes will be withheld from your distribution in accordance with the respective state rules. PROXY VOTING GUIDELINES American Century Investment Management, Inc., the funds' investment advisor, is responsible for exercising the voting rights associated with the securities purchased and/or held by the funds. A description of the policies and procedures the advisor uses in fulfilling this responsibility is available without charge, upon request, by calling 1-800-345-2021. It is also available on American Century Investments' website at americancentury.com and on the Securities and Exchange Commission's website at sec.gov. Information regarding how the investment advisor voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is available on the "About Us" page at americancentury.com. It is also available at sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The funds file their complete schedule of portfolio holdings with the Securities and Exchange Commission (SEC) for the first and third quarters of each fiscal year on Form N-Q. The funds' Forms N-Q are available on the SEC's website at sec.gov, and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. The funds also make their complete schedule of portfolio holdings for the most recent quarter of their fiscal year available on their website at americancentury.com and, upon request, by calling 1-800-345-2021. - ------ 41 INDEX DEFINITIONS The following indices are used to illustrate investment market, sector, or style performance or to serve as fund performance comparisons. They are not investment products available for purchase. The RUSSELL 1000® INDEX is a market-capitalization weighted, large-cap index created by Frank Russell Company to measure the performance of the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 1000® GROWTH INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 1000® VALUE INDEX measures the performance of those Russell 1000 Index companies (the 1,000 largest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL 2000® INDEX is a market-capitalization weighted index created by Frank Russell Company to measure the performance of the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL 2000® GROWTH INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL 2000® VALUE INDEX measures the performance of those Russell 2000 Index companies (the 2,000 smallest of the 3,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The RUSSELL MIDCAP® INDEX measures the performance of the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization. The RUSSELL MIDCAP® GROWTH INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values. The RUSSELL MIDCAP® VALUE INDEX measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with lower price-to-book ratios and lower forecasted growth values. The S&P MIDCAP 400 INDEX, a capitalization-weighted index consisting of 400 domestic stocks, measures the performance of the mid-size company segment of the U.S. market. The S&P SMALLCAP 600 INDEX, a capitalization-weighted index consisting of 600 domestic stocks, measures the small company segment of the U.S. market. - ------ 42 NOTES - ------ 43 NOTES - ------ 44 [back cover] [american century investments logo and text logo ®] CONTACT US AMERICANCENTURY.COM AUTOMATED INFORMATION LINE . . . . . . . . . . . . . . . 1-800-345-8765 INVESTOR SERVICES REPRESENTATIVE . . . . . . . . . . . . 1-800-345-2021 or 816-531-5575 INVESTORS USING ADVISORS . . . . . . . . . . . . . . . . 1-800-378-9878 BUSINESS, NOT-FOR-PROFIT, EMPLOYER-SPONSORED RETIREMENT PLANS . . . . . . . . . . . . . . . . . . . . 1-800-345-3533 BANKS AND TRUST COMPANIES, BROKER-DEALERS, FINANCIAL PROFESSIONALS, INSURANCE COMPANIES . . . . . . 1-800-345-6488 TELECOMMUNICATIONS DEVICE FOR THE DEAF . . . . . . . . . 1-800-634-4113 AMERICAN CENTURY MUTUAL FUNDS, INC. INVESTMENT ADVISOR: American Century Investment Management, Inc. Kansas City, Missouri This report and the statements it contains are submitted for the general information of our shareholders. The report is not authorized for distribution to prospective investors unless preceded or accompanied by an effective prospectus. American Century Investment Services, Inc., Distributor ©2008 American Century Proprietary Holdings, Inc. All rights reserved. 0806 CL-SAN-60505N
ITEM 2. CODE OF ETHICS. Not applicable for semiannual report filings. ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. Not applicable for semiannual report filings. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. Not applicable for semiannual report filings. ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS. Not applicable. ITEM 6. INVESTMENTS. (a) The schedule of investments is included as part of the report to stockholders filed under Item 1 of this Form. (b) Not applicable. ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable. ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable. ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS. Not applicable. ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS. During the reporting period, there were no material changes to the procedures by which shareholders may recommend nominees to the registrant's board. ITEM 11. CONTROLS AND PROCEDURES. (a) The registrant's principal executive officer and principal financial officer have concluded that the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) are effective based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of this report. (b) There were no changes in the registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) that occurred during the registrant's second fiscal quarter of the period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. ITEM 12. EXHIBITS. (a)(1) Not applicable for semiannual report filings. (a)(2) Separate certifications by the registrant's principal executive officer and principal financial officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 and Rule 30a-2(a) under the Investment Company Act of 1940, are filed and attached hereto as Exhibit 99.302CERT. (a)(3) Not applicable. (b) A certification by the registrant's chief executive officer and chief financial officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, is furnished and attached hereto as Exhibit 99.906CERT.
SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Registrant: AMERICAN CENTURY MUTUAL FUNDS, INC. By: /s/ Jonathan S. Thomas -------------------------------------------------- Name: Jonathan S. Thomas Title: President Date: June 24, 2008 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By: /s/ Jonathan S. Thomas --------------------------------------------------- Name: Jonathan S. Thomas Title: President (principal executive officer) Date: June 24, 2008 By: /s/ Robert J. Leach --------------------------------------------------- Name: Robert J. Leach Title: Vice President, Treasurer, and Chief Financial Officer (principal financial officer) Date: June 24, 2008