OMB APPROVAL OMB Number: 3235-0570 Expires: August 31, 2010 Estimated average burden hours per response.....18.9 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 811-21460 Pioneer Series Trust II (Exact name of registrant as specified in charter) 60 State Street, Boston, MA 02109 (Address of principal executive offices) (ZIP code) Dorothy E. Bourassa, Pioneer Investment Management, Inc., 60 State Street, Boston, MA 02109 (Name and address of agent for service) Registrant's telephone number, including area code: (617) 742-7825 Date of fiscal year end: December 31 Date of reporting period: January 1, 2008 through December 31, 2008 Form N-CSR is to be used by management investment companies to file reports with the Commission not later than 10 days after the transmission to stockholders of any report that is required to be transmitted to stockholders under Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1). The Commission may use the information provided on Form N-CSR in its regulatory, disclosure review, inspection, and policymaking roles. A registrant is required to disclose the information specified by Form N-CSR, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-CSR unless the Form displays a currently valid Office of Management and Budget ("OMB") control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. ss. 3507. ITEM 1. REPORTS TO SHAREOWNERS. Pioneer AmPac Growth Fund Annual Report | December 31, 2008 Ticker Symbols: Class A PAPRX Class B PRABX Class C PRRCX [LOGO]PIONEER Investments(R) visit us: pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 10 Comparing Ongoing Fund Expenses 13 Schedule of Investments 15 Financial Statements 20 Notes to Financial Statements 27 Report of Independent Registered Public Accounting Firm 33 Approval of Sub-Advisory Agreement 34 Trustees, Officers and Service Providers 37 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 1 President's Letter Dear Shareowner, Stock and bond markets around the globe this year have experienced one of their most tumultuous periods in history. Investors have witnessed volatility of a magnitude that many have never before seen. Distance often provides the best vantage point for perspective. Still, we believe that the benefits of basic investment principles that have stood the test of time -- even in the midst of market turmoil -- cannot be underestimated. First, invest for the long term. The founder of Pioneer Investments, Philip L. Carret, began his investment career during the 1920s. One lesson he learned is that while great prosperity affords an advantageous time for selling stocks, extreme economic slumps can create opportunities for purchase. Indeed, many of our portfolio managers, who follow the value-conscious investing approach of our founder, are looking at recent market conditions as an opportunity to buy companies whose shares we believe have been unjustifiably beaten down by indiscriminate selling, but that we have identified as having strong prospects over time. While investors may be facing a sustained market downturn, we continue to believe that patience, along with staying invested in the market, are important considerations for long-term investors. A second principle is to stay diversified across different types of investments. The global scope of the current market weakness poses challenges for this basic investment axiom. But the turbulence makes now a good time to reassess your portfolio and make sure that your investments continue to meet your needs. We believe you should work closely with your financial advisor to find the mix of stocks, bonds and money market assets that is best aligned to your particular risk tolerance and investment objective. As the investment markets sort through the continuing crisis in the financial industry, we are staying focused on the fundamentals and risk management. With more than 80 years of experience behind us, we have learned how to navigate turbulent markets. At Pioneer Investments, risk management has always been a critical part of our culture -- not just during periods of extraordinary volatility. Our investment process is based on fundamental research, quantitative analysis and active portfolio management. This three-pillared process, which we apply to each of our portfolios, is supported by an integrated team approach and is designed to carefully balance risk and reward. While we 2 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 see potential chances for making money in many corners of the market, it takes research and experience to separate solid investment opportunities from speculation. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at www.pioneerinvestments.com. Thank you for investing with Pioneer. Respectfully, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 3 Portfolio Management Discussion | 12/31/08 The equity markets retreated sharply in 2008, with many of the major stock market indices posting losses in the neighborhood of 35% to 40% - their worst annual showing since 1931. However, shareowners in Pioneer AmPac Growth Fund can take a measure of solace from the fact that the Fund held up better than most, as Rosellen Papp of L. Roy Papp & Associates, the Fund's sub-adviser, discusses in the following interview. Q What was the market environment like during the 12 months ended December 31, 2008? A With many long-standing pillars of the financial community collapsing, the credit markets contracting sharply, and the U.S. economy tipping into recession, the capital markets experienced unprecedented turmoil in 2008. The crisis in confidence among consumers and businesses and the ensuing global market sell-off sent investors fleeing from all risk. The severity of the market downturn and economic crisis was so sharp that the Federal Reserve Board, the U.S. Treasury and the U.S. government introduced several innovative programs to bolster the financial markets and attempt to unfreeze the credit markets. By year end, financial markets had stabilized from near-panic levels, and historically low interest rates were showing signs of thawing the credit markets. Q How did the Fund perform for the 12-month period ended December 31, 2008? A The Fund's emphasis on high-quality American growth companies with strong balance sheets and consistent earnings helped it to outperform its benchmark and competitive funds universe, but it was still a disappointing year. For the 12 months ended December 31, 2008, Class A shares posted a total return of -33.36% at net asset value, with much of the decline coming in the second half of the year. The Fund's benchmark, the Russell 1000 Growth Index, returned -38.44% over the same 12 months, and the average return for the 506 multi-cap growth funds tracked by Lipper was -41.90%. Q What factors most contributed to the Fund's outperformance versus its benchmark and Lipper peer group during the 12-month period ended December 31, 2008? A There was almost no place to hide from the steep decline in the market, but some stocks weathered the crisis better than others. By focusing on high- quality companies with solid earnings growth and by limiting the Fund's exposure to several sectors of the economy that suffered in the wake of higher oil prices in the first half of 2008 and the deepening financial crisis 4 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 throughout the fiscal year, we were able to lessen the impact of the decline on the Fund's portfolio. Our stock selection -- particularly in the energy, information technology, industrial, and health care sectors -- also helped the Fund's performance results during the 12-month period. Q Could you mention some of the holdings that helped the Fund's performance during the annual reporting period? A The Fund's focus on large integrated oil companies, such as ExxonMobil and Chevron, was a positive contributor, as they outperformed servicers and drillers when commodity prices fell sharply. Fund holding Johnson & Johnson was the third-best performing stock in the Dow Jones Industrial Average in 2008 -- demonstrating its defensive qualities as a health care company in a down market. Similarly, two consumer-related holdings performed well despite the economic slowdown: footwear giant Nike continued to do well following the summer Olympics, and Colgate-Palmolive benefited from consumers not turning to generic alternatives during the period. Investments in the chewing gum manufacturer Wm. Wrigley Jr. appreciated strongly in response to a buyout offer from Warren Buffet's Berkshire Hathaway and the privately held Mars. Expeditors International of Washington, an international airfreight forwarding company, continued to profit from trade between Asia and the United States in spite of the global slowdown. Three holdings that were added to the Fund last spring held up well during the period. United Technologies has a large order backlog that is expected to help support revenue growth in the months ahead. Accenture, a global management consulting and technology services company, has been seeing the growth of its outsourcing business as customers seek to reduce costs during the recession. Finally, Trimble Navigation, which specializes in global positioning equipment for businesses, including agriculture and road construction, may be in a position to benefit from infrastructure spending that is expected to be part of the new administration's stimulus package. Q Which holdings detracted from the Fund's performance during the 12 months ended December 31, 2008? A The Fund's financial stocks declined during the sell-off, but they did not fall to the degree that large money center and regional banks with balance sheet issues did. In our estimation, Fund holdings such as State Street Bank and T. Rowe Price still offer strategic value and long-term potential. We did, however, sell the Fund's holding in commercial bank UCBH Holdings in the first half of the year - well in advance of the financial market meltdown last fall. We were concerned that the difficulties in the credit markets could result in a decline in commercial real estate transactions, which would impact UCBH negatively. We scaled back the Fund's investment in General Electric, but the stock still proved disappointing in the market correction Pioneer AmPac Growth Fund | Annual Report | 12/31/08 5 when the company reported weaker-than-expected earnings due to the dismal performance of its financial businesses. With the current state of the U.S. economy coming into question, WPP Group, which owns the highly respected Ogilvy Mather and J. Walter Thompson agencies, fell in response to fears that a slowdown will hurt demand for advertising. Stryker, a developer and manufacturer of orthopedic and surgical devices, lagged in the fourth quarter on investor fears that patients would postpone elective surgeries in a recession, thereby affecting company profits. Stryker's stock price bounced back following the close of the fiscal year. Medtronic's stock lagged in response to concerns that a competitor with a similar stent product may hurt profits. However, we saw this as a temporary issue and remain confident in the company's growth potential, especially from its pacemaker and neurological businesses. Q We've already discussed some of the stocks that you added to the portfolio early in the year. Did you make any further changes to the portfolio in the second half of the year ended December 31, 2008? A Yes. In an effort to increase the Fund's exposure to the defensive consumer staples sector, we added Procter & Gamble, which we believe should prove relatively resilient in these tougher economic times. Q What is your outlook for the new fiscal year that began on January 1, 2009? A The months ahead are difficult to gauge, but we think that deleveraging, or the paying down of excess debt, should help restore more solid underpinnings to the U.S. economy. And while the United States may face some bumpy conditions over the next few months, we feel the coordinated response by global governments and central banks should aid credit market recovery, differentiating today's crisis from the Great Depression. We have been seeing signs that the markets are beginning to function again, which is contributing to our mildly optimistic outlook. Crude oil prices declined steeply during the second half of 2008 -- falling from a peak of $147 a barrel to below $40, and gasoline prices followed suit. This will free up much needed cash for consumers to spend and help keep inflation low. Secondly, given the steep decline in interest rates during the course of 2008, we think that record low rates can help stabilize the housing market, which, in turn, helps financial and credit markets recover. Thirdly, the massive U.S. government economic stimulus program, in tandem with those abroad, should help jump start the economy and restore some consumer and investor confidence. Finally, new direction and leadership in Washington can be a positive force for change. 6 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 U.S. equity valuations are the most compelling in years and appear to be discounting a too-bearish outlook in our estimation. We feel that the Fund, with its emphasis on high-quality companies with strong balance sheets, strong cash flows, excellent management and reasonable growth prospects trading at attractive valuations, should be in a good position to benefit from an improving economic cycle. Please refer to the Schedule of Investments on pages 15-19 for a full listing of Fund securities. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. The Fund may invest a substantial amount of its assets in issuers located in a limited number of countries and therefore is susceptible to adverse economic, political or regulatory developments affecting those countries. Investing in the securities of U.S. issuers with substantial foreign activities involves many of the same risks as investing in the securities of foreign issuers. The Fund invests in a limited number of securities and, as a result, the Fund's performance may be more volatile than the performance of other funds holding more securities. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries or sectors. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These statements should not be relied upon for any other purposes. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 7 Portfolio Summary | 12/31/08 Portfolio Diversification - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) U.S. Common Stocks 86.8% Temporary Cash Investments 11.1% Depositary Receipts for International Stocks 2.1% Sector Distribution - -------------------------------------------------------------------------------- (As a percentage of equity holdings) Information Technology 34.5% Industrials 16.5% Health Care 11.6% Consumer Discretionary 11.3% Consumer Staples 10.4% Financials 9.0% Energy 6.7% 10 Largest Holdings* - -------------------------------------------------------------------------------- (As a percentage of equity holdings) 1. Accenture, Ltd. 4.95% 2. Colgate-Palmolive Co. 4.90 3. Emerson Electric Co. 4.80 4. T. Rowe Price Associates, Inc. 4.78 5. Microsoft Corp. 4.48 6. State Street Corp. 4.22 7. Cisco Systems, Inc. 4.14 8. 3M Co. 4.11 9. Nike, Inc. 4.05 10. Stryker Corp. 3.97 * This list excludes temporary cash and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 8 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Prices and Distributions | 12/31/08 Net Asset Value per Share - -------------------------------------------------------------------------------- Class 12/31/08 12/31/07 A $ 12.13 $ 18.36 - ------------------------------------------------- B $ 11.80 $ 17.77 - ------------------------------------------------- C $ 11.78 $ 17.79 - ------------------------------------------------- Distributions per Share: 1/1/08-12/31/08 - -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains A $ 0.1025 $ -- $ -- - -------------------------------------------------------------------------------- B $ -- $ -- $ -- - -------------------------------------------------------------------------------- C $ -- $ -- $ -- - -------------------------------------------------------------------------------- Index Definitions - -------------------------------------------------------------------------------- The Russell 1000 Growth Index measures the performance of large-cap U.S. growth stocks. Companies in this index tend to exhibit higher price-to-book and price-to-earnings ratios, lower dividend yields, and higher forecasted growth values than the value universe. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any sales charges, fees or expenses. You cannot invest directly in an index. The index defined here pertains to the "Value of $10,000 Investment" charts shown on pages 10-12. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 9 Performance Update | 12/31/08 Class A Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AmPac Growth Fund at public offering price, compared to that of the Russell 1000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ------------------------------------------------------------------ Net Asset Public Offering Period Value (NAV) Price (POP) - ------------------------------------------------------------------ 10 Years -1.06% -1.64% 5 Years -3.82 -4.96 1 Year -33.36 -37.19 - ------------------------------------------------------------------ Expense Ratio (Per prospectus dated May 1, 2008) - ------------------------------------------------------------------ Gross Net - ------------------------------------------------------------------ 1.65% 1.25% - ------------------------------------------------------------------ [THE FOLLOWING DATA IS REPRESENTED AS A LINE CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Russell AmPac 1000 Growth Growth Fund Index 12/98 9,425 10,000 11,738 13,316 12/00 11,815 10,330 10,115 8,220 12/02 8,054 5,928 10,298 7,692 12/04 10,396 8,176 10,470 8,606 12/06 11,658 9,387 12,716 10,496 12/08 8,474 6,462 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers, Fund performance would be lower. The net expense ratio reflects contractual expense limitation currently in effect through 5/1/10 for Class A Shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer AmPac Growth Fund was created through the reorganization of predecessor fund Papp America-Pacific Rim Fund on February 20, 2004. The performance of Class A shares of the Fund from March 14, 1997 to February 20, 2004 is the performance of Papp America-Pacific Rim Fund's single class, which has been restated to reflect any applicable sales charges, Rule 12b-1 fees and service fees (but not other differences in expenses). This adjustment has the effect of reducing the previously reported performance of Papp America-Pacific Rim Fund. 10 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Class B Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AmPac Growth Fund, compared to that of the Russell 1000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- 10 Years -1.83% -1.83% 5 Years -4.61 -4.61 1 Year -33.60 -36.25 - ---------------------------------------------------------------- Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 2.60% 2.15% - ---------------------------------------------------------------- [THE FOLLOWING DATA IS REPRESENTED AS A LINE CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Russell AmPac 1000 Growth Growth Fund Index 12/98 10,000 10,000 12,362 13,316 12/00 12,350 10,330 10,494 8,220 12/02 8,292 5,928 10,524 7,692 12/04 10,549 8,176 10,509 8,606 12/06 11,584 9,387 12,520 10,496 12/08 8,314 6,462 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). Effective December 1, 2004, the period during which a CDSC is applied to withdrawals was shortened to 5 years. The maximum CDSC for Class B shares continues to be 4%. For more complete information, please see the prospectus for details. Note: Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time you purchased those shares. For performance information for shares purchased prior to December 1, 2004, please visit www.pioneerinvestments.com. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers, Fund performance would be lower. The net expense ratio reflects contractual expense limitation currently in effect through 5/1/10 for Class B shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer AmPac Growth Fund was created through the reorganization of predecessor fund Papp America-Pacific Rim Fund on February 20, 2004. The performance of Class B shares of the Fund from March 14, 1997 to February 20, 2004 is the performance of Papp America-Pacific Rim Fund's single class, which has been restated to reflect any applicable sales charges, Rule 12b-1 fees and service fees (but not other differences in expenses). This adjustment has the effect of reducing the previously reported performance of Papp America-Pacific Rim Fund. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 11 Performance Update | 12/31/08 Class C Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AmPac Growth Fund, compared to that of the Russell 1000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- 10 Years -1.85% -1.85% 5 Years -4.64 -4.64 1 Year -33.78 -33.78 - ---------------------------------------------------------------- Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 2.55% 2.15% - ---------------------------------------------------------------- [THE FOLLOWING DATA IS REPRESENTED AS A LINE CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Russell AmPac 1000 Growth Growth Fund Index 12/98 10,000 10,000 12,362 13,316 12/00 12,350 10,330 10,494 8,220 12/09 8,292 5,928 10,524 7,692 12/09 10,542 8,176 10,509 8,606 12/09 11,590 9,387 12,534 10,496 12/09 8,300 6,462 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). The performance of Class C shares does not reflect the 1% front-end sales charge in effect prior to February 1, 2004. If you paid a 1% sales charge, your returns would be lower than those shown above. "If Held" results represent the percent change in net asset value per share. "If Redeemed" results reflect the deduction of the 1% CDSC. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers, Fund performance would be lower. The net expense ratio reflects contractual expense limitation currently in effect through 5/1/10 for Class C shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer AmPac Growth Fund was created through the reorganization of predecessor fund Papp America-Pacific Rim Fund on February 20, 2004. The performance of Class C shares of the Fund from March 14, 1997 to February 20, 2004 is the performance of Papp America-Pacific Rim Fund's single class, which has been restated to reflect any applicable sales charges, Rule 12b-1 fees and service fees (but not other differences in expenses). This adjustment has the effect of reducing the previously reported performance of Papp America-Pacific Rim Fund. 12 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables - -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer AmPac Growth Fund Based on actual returns from July 1, 2008 through December 31, 2008. -------------------------------------------------------------------------------- Share Class A B C - -------------------------------------------------------------------------------- Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - -------------------------------------------------------------------------------- Ending Account $ 734.41 $ 736.06 $ 733.09 Value on 12/31/08 - -------------------------------------------------------------------------------- Expenses Paid $ 5.45 $ 7.81 $ 8.28 During Period* - -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.25%, 1.79% and 1.90% for Class A, Class B and Class C shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). Pioneer AmPac Growth Fund | Annual Report | 12/31/08 13 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. 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 the 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 tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below 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 transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer AmPac Growth Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from July 1, 2008 through December 31, 2008. - -------------------------------------------------------------------------------- Share Class A B C - -------------------------------------------------------------------------------- Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - -------------------------------------------------------------------------------- Ending Account $ 1,018.85 $ 1,016.14 $ 1,015.58 Value on 12/31/08 - -------------------------------------------------------------------------------- Expenses Paid $ 6.34 $ 9.07 $ 9.63 During Period* - -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.25%, 1.79% and 1.90% for Class A, Class B and Class C shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). 14 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Schedule of Investments | 12/31/08 - -------------------------------------------------------------------------------- Shares Value - -------------------------------------------------------------------------------- COMMON STOCKS -- 98.4% ENERGY -- 6.6% Integrated Oil & Gas -- 6.6% 6,400 Chevron Corp. $ 473,408 4,600 Exxon Mobil Corp. 367,218 ----------- $ 840,626 ----------- Total Energy $ 840,626 - -------------------------------------------------------------------------------- CAPITAL GOODS -- 12.9% Aerospace & Defense -- 2.0% 4,800 United Technologies Corp. $ 257,280 - -------------------------------------------------------------------------------- Electrical Component & Equipment -- 4.7% 16,500 Emerson Electric Co. $ 604,065 - -------------------------------------------------------------------------------- Industrial Conglomerates -- 6.2% 9,000 3M Co. $ 517,860 16,500 General Electric Co. 267,300 ----------- $ 785,160 ----------- Total Capital Goods $ 1,646,505 - -------------------------------------------------------------------------------- TRANSPORTATION -- 3.4% Air Freight & Couriers -- 3.4% 13,000 Expeditors International of Washington, Inc. (b) $ 432,510 ----------- Total Transportation $ 432,510 - -------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 6.7% Apparel, Accessories & Luxury Goods -- 2.7% 17,000 Coach, Inc.* $ 353,090 - -------------------------------------------------------------------------------- Footwear -- 4.0% 10,000 Nike, Inc. (b) $ 510,000 ----------- Total Consumer Durables & Apparel $ 863,090 - -------------------------------------------------------------------------------- MEDIA -- 2.3% Advertising -- 2.3% 10,000 WPP Plc $ 295,900 ----------- Total Media $ 295,900 - -------------------------------------------------------------------------------- RETAILING -- 2.0% General Merchandise Stores -- 2.0% 7,500 Target Corp. $ 258,975 ----------- Total Retailing $ 258,975 - -------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 3.2% Soft Drinks -- 3.2% 7,500 PepsiCo, Inc. $ 410,775 ----------- Total Food, Beverage & Tobacco $ 410,775 - -------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 15 Schedule of Investments | 12/31/08 (continued) - -------------------------------------------------------------------------------- Shares Value - -------------------------------------------------------------------------------- HOUSEHOLD & PERSONAL PRODUCTS -- 7.0% Household Products -- 7.0% 9,000 Colgate-Palmolive Co. $ 616,860 4,500 Procter & Gamble Co.* 278,190 ----------- $ 895,050 ----------- Total Household & Personal Products $ 895,050 - -------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 7.7% Health Care Equipment -- 7.7% 15,500 Medtronic, Inc. $ 487,010 12,500 Stryker Corp. 499,375 ----------- $ 986,385 ----------- Total Health Care Equipment & Services $ 986,385 - -------------------------------------------------------------------------------- PHARMACEUTICALS & BIOTECHNOLOGY -- 3.7% Pharmaceuticals -- 3.7% 8,000 Johnson & Johnson Co. $ 478,640 ----------- Total Pharmaceuticals & Biotechnology $ 478,640 - -------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 8.9% Asset Management & Custody Banks -- 8.9% 13,500 State Street Corp. $ 530,955 17,000 T. Rowe Price Associates, Inc. 602,480 ----------- $ 1,133,435 ----------- Total Diversified Financials $ 1,133,435 - -------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 13.1% Application Software -- 3.8% 23,000 Adobe Systems, Inc.* $ 489,670 - -------------------------------------------------------------------------------- IT Consulting & Other Services -- 4.9% 19,000 Accenture, Ltd. $ 623,010 - -------------------------------------------------------------------------------- Systems Software -- 4.4% 29,000 Microsoft Corp. $ 563,760 ----------- Total Software & Services $ 1,676,440 - -------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 11.8% Communications Equipment -- 4.1% 32,000 Cisco Systems, Inc.* $ 521,600 - -------------------------------------------------------------------------------- Computer Hardware -- 1.3% 2,000 IBM Corp.* $ 168,320 - -------------------------------------------------------------------------------- Computer Storage & Peripherals -- 1.1% 13,500 EMC Corp.* $ 141,345 - -------------------------------------------------------------------------------- Electronic Equipment & Instruments -- 1.9% 10,000 National Instruments Corp. $ 243,600 - -------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 16 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 - --------------------------------------------------------------------------------- Shares Value - --------------------------------------------------------------------------------- Electronic Manufacturing Services -- 3.4% 20,000 Trimble Navigation, Ltd.* $ 432,200 ----------- Total Technology Hardware & Equipment $ 1,507,065 - --------------------------------------------------------------------------------- SEMICONDUCTORS -- 9.1% 29,500 Intel Corp. $ 432,470 12,000 Linear Technology Corp. (b) 265,440 24,000 Microchip Technology, Inc. (b) 468,720 ----------- $ 1,166,630 ----------- Total Semiconductors $ 1,166,630 - --------------------------------------------------------------------------------- TOTAL COMMON STOCKS (Cost $13,358,048) $12,592,026 - --------------------------------------------------------------------------------- Principal Amount - --------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENTS -- 12.4% Securities Lending Collateral -- 12.4% (c) Certificates of Deposit: $ 36,623 Abbey National Plc, 3.15%, 8/13/09 $ 36,623 36,618 Bank of Nova Scotia, 3.21%, 5/5/09 36,618 58,526 Bank of Scotland NY, 2.92%, 6/5/09 58,526 65,922 Barclays Bank, 1.5%, 5/27/09 65,922 11,644 Calyon NY, 4.62%, 1/16/09 11,644 73,246 CBA, 4.87%, 7/16/09 73,246 65,922 DNB NOR Bank ASA NY, 3.04%, 6/5/09 65,922 67,094 Intesa SanPaolo S.p.A., 1.44%, 5/22/09 67,094 4,243 NORDEA NY, 4.13%, 4/9/09 4,243 54,935 Royal Bank of Canada NY, 2.7%, 8/7/09 54,935 36,623 Royal Bank of Scotland, 3.06%, 3/5/09 36,623 7,321 Skandinavian Enskilda Bank NY, 3.06%, 2/13/09 7,321 73,246 Societe Generale, 3.29%, 9/4/09 73,246 65,922 Svenska Bank NY, 4.61%, 7/8/09 65,922 73,246 U.S. Bank NA, 2.25%, 8/24/09 73,245 ----------- $ 731,130 - --------------------------------------------------------------------------------- Commercial Paper: 71,928 American Honda Finance Corp., 4.95%, 7/14/09 $ 71,928 6,980 BBVA U.S., 2.83%, 3/12/09 6,980 36,623 CME Group, Inc., 2.9%, 8/6/09 36,623 36,619 General Electric Capital Corp., 2.86%, 3/16/09 36,619 73,246 HSBC Bank, Inc., 2.5%, 8/14/09 73,246 36,623 IBM, 2.39%, 9/25/09 36,623 65,922 Met Life Global Funding, 3.19%, 6/12/09 65,922 73,246 Monumental Global Funding, Ltd., 2.5%, 8/17/09 73,246 65,922 New York Life Global, 2.13%, 09/04/09 65,922 62,259 Westpac Banking Corp., 2.34%, 6/1/09 62,259 ----------- $ 529,368 - --------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 17 Schedule of Investments | 12/31/08 (continued) - ------------------------------------------------------------------------------------- Principal Amount Value - ------------------------------------------------------------------------------------- TEMPORARY CASH INVESTMENT -- (continued) Tri-party Repurchase Agreements: $ 12,443 Barclays Capital Markets, 0.5%, 1/2/09 $ 12,443 161,142 Deutsche Bank, 0.25%, 1/2/09 161,142 ----------- $ 173,585 - ------------------------------------------------------------------------------------- Time Deposit: 73,246 BNP Paribas, 0.01%, 1/2/09 $ 73,246 - ------------------------------------------------------------------------------------- Shares Money Market Mutual Funds: 18,312 Columbia Government Reserves Fund, 0.82%, 1/2/09 $ 18,311 54,935 JP Morgan, U.S. Government Money Market Fund, 0.98%, 1/2/09 54,935 ----------- $ 73,246 - ------------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $1,580,575) $ 1,580,575 - ------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 110.8% (Cost $14,938,623) (a) $14,172,601 - ------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- (10.8)% $(1,376,566) - ------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $12,796,035 ===================================================================================== * Non-income producing security. (a) At December 31, 2008, the net unrealized loss on investments based on cost for federal income tax purposes of $14,938,623 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $1,871,859 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (2,637,881) ---------- Net unrealized loss $ (766,022) =========== (b) At December 31, 2008, the following securities were out on loan: - -------------------------------------------------------------------------- Shares Security Value 12,000 Expeditors International of Washington, Inc. $ 399,240 11,000 Linear Technology Corp. 243,320 23,700 Microchip Technology, Inc. 462,861 9,000 Nike, Inc. 459,000 - -------------------------------------------------------------------------- Total $1,564,421 =========================================================================== (c) Securities lending collateral is managed by Credit Suisse New York Branch. Purchases and sales of securities (excluding temporary cash investments) for the year ended December 31, 2008 aggregated $2,770,579 and $4,741,642, respectively. The accompanying notes are an integral part of these financial statements. 18 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of December 31, 2008, in valuing the Fund's assets: Investments Valuation Inputs in Securities Level 1 -- Quoted Prices $ 12,592,026 Level 2 -- Other Significant Observable Inputs 1,580,575 Level 3 -- Significant Unobservable Inputs -- - ---------------------------------------------------------------- Total $ 14,172,601 ================================================================ The accompanying notes are an integral part of these financial statements. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 19 Statement of Assets and Liabilities | 12/31/08 ASSETS: Investment in securities (including securities loaned of $1,564,421) (cost $14,938,623) $14,172,601 Cash 16,907 Receivables -- Investment securities sold 118,015 Fund shares sold 56,710 Dividends 21,949 Due from Pioneer Investment Management, Inc. 27,441 Other 27,164 - -------------------------------------------------------------------------------------- Total assets $14,440,787 ====================================================================================== LIABILITIES: Payables -- Fund shares repurchased $ 2,685 Upon return of securities loaned 1,580,575 Due to affiliates 6,878 Accrued expenses 54,614 - -------------------------------------------------------------------------------------- Total liabilities $ 1,644,752 ====================================================================================== NET ASSETS: Paid-in capital $13,585,455 Undistributed net investment income 12,751 Accumulated net realized loss on investments (36,149) Net unrealized loss on investments (766,022) - -------------------------------------------------------------------------------------- Total net assets $12,796,035 ====================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $10,501,480/865,921 shares) $ 12.13 Class B (based on $883,129/74,833 shares) $ 11.80 Class C (based on $1,411,426/119,772 shares) $ 11.78 MAXIMUM OFFERING PRICE: Class A ($12.13[divided by]94.25%) $ 12.87 ====================================================================================== The accompanying notes are an integral part of these financial statements. 20 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Statement of Operations For the Year Ended 12/31/08 INVESTMENT INCOME: Dividends $320,068 Interest 3,735 Income from securities loaned, net 8,605 - ---------------------------------------------------------------------------------------- Total investment income $ 332,408 - ---------------------------------------------------------------------------------------- EXPENSES: Management fees $130,987 Transfer agent fees Class A 20,494 Class B 5,218 Class C 6,688 Distribution fees Class A 34,197 Class B 13,630 Class C 20,727 Shareholder communications expense 13,795 Administrative fees 5,238 Custodian fees 28,003 Registration fees 38,586 Professional fees 45,467 Printing expense 21,705 Fees and expenses of nonaffiliated trustees 6,588 Miscellaneous 3,208 - ---------------------------------------------------------------------------------------- Total expenses $ 394,531 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (155,246) Less fees paid indirectly (795) - ---------------------------------------------------------------------------------------- Net expenses $ 238,490 - ---------------------------------------------------------------------------------------- Net investment income $ 93,918 - ---------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net realized gain on investments: $ 33,863 - ---------------------------------------------------------------------------------------- Change in net unrealized gain on investments: $ (6,834,281) - ---------------------------------------------------------------------------------------- Net loss on investments $ (6,800,418) - ---------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $ (6,706,500) ========================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 21 Statement of Changes in Net Assets For the Years Ended 12/31/08 and 12/31/07, respectively Year Ended Year Ended 12/31/08 12/31/07 FROM OPERATIONS: Net investment income $ 93,918 $ 13,491 Net realized gain on investments 33,863 498,908 Change in net unrealized gain (loss) on investments (6,834,281) 1,302,624 - ---------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $(6,706,500) $ 1,815,023 - ---------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.10 and $0.01 per share, respectively) $ (88,818) $ (12,149) Net realized gain: Class A ($0.00 and $0.55 per share, respectively) -- (509,489) Class B ($0.00 and $0.55 per share, respectively) -- (46,623) Class C ($0.00 and $0.55 per share, respectively) -- (78,230) - ---------------------------------------------------------------------------------------------- Total distributions to shareowners $ (88,818) $ (646,491) - ---------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 2,942,168 $ 5,145,754 Reinvestment of distributions 78,028 512,874 Cost of shares repurchased (5,330,782) (4,471,459) - ---------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from Fund share transactions $(2,310,586) $ 1,187,169 - ---------------------------------------------------------------------------------------------- Net increase (decrease) in net assets $(9,105,904) $ 2,355,701 NET ASSETS: Beginning of year 21,901,939 19,546,238 - ---------------------------------------------------------------------------------------------- End of year $12,796,035 $21,901,939 - ---------------------------------------------------------------------------------------------- Undistributed net investment income $ 12,751 $ 7,651 - ---------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 22 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 '08 Shares '08 Amount '07 Shares '07 Amount Class A Shares sold 148,959 $ 2,197,791 200,764 $3,696,448 Reinvestment of distributions 6,634 77,960 24,202 429,839 Less shares repurchased (253,771) (4,039,208) (166,136) (3,144,954) - -------------------------------------------------------------------------------------------------- Net increase (decrease) (98,178) $ (1,763,457) 58,830 $ 981,333 ================================================================================================== Class B Shares sold 21,193 $ 322,565 36,725 $ 659,609 Reinvestment of distributions -- -- 1,964 33,746 Less shares repurchased (33,857) (457,158) (38,346) (687,627) - -------------------------------------------------------------------------------------------------- Net increase (decrease) (12,664) $ (134,593) 343 $ 5,728 ================================================================================================== Class C Shares sold 27,851 $ 421,880 43,990 $ 789,543 Reinvestment of distributions -- -- 2,867 49,289 Less shares repurchased (56,680) (834,416) (35,774) (630,966) - -------------------------------------------------------------------------------------------------- Net increase (decrease) (28,829) $ (412,536) 11,083 $ 207,866 ================================================================================================== Class R* Shares sold -- $ -- 9 $ 154 Reinvestment of distributions -- -- -- -- Less shares repurchased -- -- (458) (7,912) - -------------------------------------------------------------------------------------------------- Net decrease -- $ -- (449) $ (7,758) ================================================================================================== * Class R shares ceased operations on February 1, 2007 The accompanying notes are an integral part of these financial statements. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 23 Financial Highlights The accompanying notes are an integral part of these financial statements. Year Ended Year Ended 12/31/08 12/31/07 Class A Net asset value, beginning of period $ 18.36 $ 17.37 - -------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.11 $ 0.04 Net realized and unrealized gain (loss) on investments (6.24) 1.51 - ------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (6.13) $ 1.55 Distributions to shareowners: Net investment income (0.10) (0.01) Net realized gain -- (0.55) - ------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (6.23) $ 0.99 - ------------------------------------------------------------------------------------------------- Net asset value, end of period $ 12.13 $ 18.36 ================================================================================================= Total return* (33.36)% 9.07% Ratio of net expenses to average net assets+ 1.25% 1.25% Ratio of net investment income to average net assets+ 0.66% 0.23% Portfolio turnover rate 16% 9% Net assets, end of period (in thousands) $ 10,501 $17,703 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 2.07% 1.65% Net investment loss (0.16)% (0.17)% Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.25% 1.25% Net investment income 0.66% 0.23% ================================================================================================= Financial Highlights The accompanying notes are an integral part of these financial statements. Year Ended Year Ended Year Ended 12/31/06 12/31/05 12/31/04 (b) Class A Net asset value, beginning of period $ 16.08 $ 15.97 $ 15.87 - ---------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.05 $ 0.02 $ 0.06 Net realized and unrealized gain (loss) on investments 1.77 0.09 0.10 - ---------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 1.82 $ 0.11 $ 0.16 Distributions to shareowners: Net investment income (0.01) --(a) (0.06) Net realized gain (0.52) -- -- - ---------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 1.29 $ 0.11 $ 0.10 - ---------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 17.37 $ 16.08 $ 15.97 ================================================================================================================= Total return* 11.35% 0.71% 0.99%** Ratio of net expenses to average net assets+ 1.25% 1.25% 1.25% Ratio of net investment income to average net assets+ 0.28% 0.08% 0.43% Portfolio turnover rate 14% 16% 11% Net assets, end of period (in thousands) $15,724 $15,780 $19,042 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.82% 2.23% 2.22% Net investment loss (0.29)% (0.90)% (0.54)% Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.25% 1.25% 1.25% Net investment income 0.28% 0.08% 0.43% ================================================================================================================= (a) Amount rounds to less than $.01 per share. (b) Effective February 20, 2004 Pioneer Investment Management became the Advisor of the Fund. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. ** Total return would be reduced if sales charges were taken into account. + Ratios with no reduction for fees paid indirectly. 24 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 The accompanying notes are an integral part of these financial statements. Year Ended Year Ended 12/31/08 12/31/07 Class B Net asset value, beginning of period $ 17.77 $ 16.97 - -------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.02 $ (0.13) Net realized and unrealized gain (loss) on investments (5.99) 1.48 - -------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (5.97) $ 1.35 Distributions to shareowners: Net realized gain -- (0.55) - -------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (5.97) $ 0.80 - -------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 11.80 $ 17.77 ============================================================================================================== Total return* (33.60)% 8.09% Ratio of net expenses to average net assets+ 1.80% 2.16% Ratio of net investment income (loss) to average net assets+ 0.11% (0.67)% Portfolio turnover rate 16% 9% Net assets, end of period (in thousands) $ 883 $ 1,555 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 3.10% 2.60% Net investment loss (1.19)% (1.11)% Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.79% 2.15% Net investment income (loss) 0.12% (0.66)% ============================================================================================================== The accompanying notes are an integral part of these financial statements. Year Ended Year Ended 12/31/06 12/31/05 Class B Net asset value, beginning of period $ 15.87 $ 15.93 - -------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ (0.10) $ (0.15) Net realized and unrealized gain (loss) on investments 1.72 0.09 - -------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 1.62 $ (0.06) Distributions to shareowners: Net realized gain (0.52) -- - -------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 1.10 $ (0.06) - -------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 16.97 $ 15.87 =============================================================================================================== Total return* 10.23% (0.38)% Ratio of net expenses to average net assets+ 2.23% 2.32% Ratio of net investment income (loss) to average net assets+ (0.69)% (0.98)% Portfolio turnover rate 14% 16% Net assets, end of period (in thousands) $ 1,479 $ 1,224 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 2.79% 3.30% Net investment loss (1.25)% (1.96)% Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 2.22% 2.32% Net investment income (loss) (0.68)% (0.98)% =============================================================================================================== The accompanying notes are an integral part of these financial statements. 2/21/04 (b) to 12/31/04 Class B Net asset value, beginning of period $ 16.32 - --------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ (0.01) Net realized and unrealized gain (loss) on investments (0.38) - --------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (0.39) Distributions to shareowners: Net realized gain -- - --------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (0.39) - --------------------------------------------------------------------------------------------------- Net asset value, end of period $ 15.93 =================================================================================================== Total return* (2.39)%(a) Ratio of net expenses to average net assets+ 2.08%** Ratio of net investment income (loss) to average net assets+ (0.07)%** Portfolio turnover rate 11% Net assets, end of period (in thousands) $ 1,177 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 3.14%** Net investment loss (1.14)%** Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 2.08%** Net investment income (loss) (0.07)%** =================================================================================================== (a) Not Annualized. (b) Class B shares were first publicly offered on February 21, 2004. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized + Ratios with no reduction for fees paid indirectly. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 25 Financial Highlights (continued) The accompanying notes are an integral part of these financial statements. Year Ended Year Ended 12/31/08 12/31/07 Class C Net asset value, beginning of period $ 17.79 $ 16.98 - -------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ --(c) $ (0.11) Net realized and unrealized gain (loss) on investments (6.01) 1.47 - -------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (6.01) $ 1.36 Distributions to shareowners: Net realized gain -- (0.55) - -------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (6.01) $ 0.81 - -------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 11.78 $ 17.79 ============================================================================================================== Total return* (33.78)% 8.14% Ratio of net expenses to average net assets+ 1.91% 2.16% Ratio of net investment income (loss) to average net assets+ (0.02)% (0.67)% Portfolio turnover rate 16% 9% Net assets, end of period (in thousands) $ 1,411 $ 2,644 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 3.03% 2.55% Net investment loss (1.14)% (1.06)% Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.90% 2.15% Net investment income (loss) (0.01)% (0.66)% ============================================================================================================== Financial Highlights (continued) The accompanying notes are an integral part of these financial statements. Year Ended Year Ended 12/31/06 12/31/05 Class C Net asset value, beginning of period $ 15.87 $ 15.92 - -------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ (0.11) $ (0.15) Net realized and unrealized gain (loss) on investments 1.74 0.10 - -------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 1.63 $ (0.05) Distributions to shareowners: Net realized gain (0.52) -- - -------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 1.11 $ (0.05) - -------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 16.98 $ 15.87 ============================================================================================================== Total return* 10.29% (0.31)% Ratio of net expenses to average net assets+ 2.20% 2.23% Ratio of net investment income (loss) to average net assets+ (0.67)% (0.90)% Portfolio turnover rate 14% 16% Net assets, end of period (in thousands) $ 2,336 $ 2,664 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 2.77% 3.20% Net investment loss (1.24)% (1.87)% Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 2.20% 2.22% Net investment income (loss) (0.67)% (0.89)% ============================================================================================================== Financial Highlights (continued) The accompanying notes are an integral part of these financial statements. 2/21/04 (b) to 12/31/04 Class C Net asset value, beginning of period $ 16.32 - ------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income (loss) $ 0.01 Net realized and unrealized gain (loss) on investments (0.41) - ------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ (0.40) Distributions to shareowners: Net realized gain -- - ------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (0.40) - ------------------------------------------------------------------------------------------------ Net asset value, end of period $ 15.92 ================================================================================================ Total return* (2.45)%(a) Ratio of net expenses to average net assets+ 2.12%** Ratio of net investment income (loss) to average net assets+ 0.14%** Portfolio turnover rate 11% Net assets, end of period (in thousands) $ 2,905 Ratios with no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 3.16%** Net investment loss (0.89)%** Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 2.12%** Net investment income (loss) 0.14%** ================================================================================================ (a) Not Annualized. (b) Class C shares were first publicly offered on February 21, 2004. (c) Amount rounds to less than one cent per share. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratios with no reduction for fees paid indirectly. 26 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Notes to Financial Statements | 12/31/08 1. Organization and Significant Accounting Policies Pioneer AmPac Growth Fund (the Fund) (formerly, Pioneer Papp America-Pacific Rim Fund), is one of seven series of portfolios comprising Pioneer Series Trust II, a Delaware statutory trust registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The Fund, which commenced operations on February 20, 2004, is the successor to the Papp America-Pacific Rim Fund, Inc. The investment objective of the Fund is to seek long-term capital growth. The Fund offers three classes of shares designated as Class A, Class B and Class C shares. Class R shares were liquidated on February 1, 2007. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Share classes have exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. Class B shares convert to Class A shares approximately eight years after the date of purchase. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gains and losses on investments during the reporting year. Actual results could differ from those estimates. The Fund invests in a limited number of securities and, as a result, the Fund's performance may be more volatile than the performance of other funds holding more securities. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectuses contain Pioneer AmPac Growth Fund | Annual Report | 12/31/08 27 unaudited information regarding the Fund's principal risks. Please refer to those documents when considering the Fund's principal risks. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry. A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. In computing the net asset value, securities are valued at the last sale price on the principal exchange where they are traded. Securities that have not traded on the date of valuation, or securities for which sale prices are not generally reported, are valued at the mean between the last bid and asked prices. Securities for which market quotations are not readily available are valued using fair value methods pursuant to procedures adopted by the Board of Trustees. Trading in foreign securities is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. The Fund may also use fair value methods to value a security, including a non-U.S. security, when the closing market price on the principal exchange where the security is traded no longer reflects the value of the security. At December 31, 2008 there were no securities that were valued using fair value methods. Temporary cash investments are valued at cost which approximates market value. Dividend income is recorded on the ex-dividend date except that certain dividends from foreign securities where the ex-dividend date may have passed are recorded as soon as the Fund becomes aware of the ex-dividend data in the exercise of reasonable diligence. Dividend and interest income is recorded on the accrual basis, net of unrecoverable foreign taxes withheld at the applicable country rates. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. B. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. Tax years for the prior three fiscal years remain subject to examination by tax authorities. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal 28 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 income tax rules. Therefore, the sources of the Fund's distributions may be shown in the accompanying financial statements as from or in excess of net investment income or as from net realized gain on investment transactions, or as from paid-in capital, depending on the type of book/tax differences that may exist. At December 31, 2008, the Fund had a net capital loss carryforward of $36,149 which will expire in 2016 if not utilized. The tax character of distributions paid during the years ended December 31, 2008 and December 31, 2007 was as follows: - ------------------------------------------------------- 2008 2007 Distributions paid from: Ordinary income $88,818 $ 12,149 Long-term capital gain -- 634,342 - ------------------------------------------------------- Total $88,818 $646,491 - ------------------------------------------------------- The following shows components of distributable earnings on a federal income tax basis at December 31, 2008: - ----------------------------------------------------- 2008 - ----------------------------------------------------- Distributable earnings: Undistributed ordinary income $ 12,751 Capital loss carryforward (36,149) Unrealized Depreciation (766,022) - ---------------------------------------------------- Total $ (789,420) ==================================================== C. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned approximately $1,735 in underwriting commissions on the sale of Class A shares during the year ended December 31, 2008. D. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on the respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class B and Class C shares of the Fund, respectively (see Note 4). Shareowners of each class participate in all expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services, which are allocated based on the Pioneer AmPac Growth Fund | Annual Report | 12/31/08 29 number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner, at the same time and on the same day , except that Class A, Class B and Class C shares bear different transfer agent and distribution expense rates. E. Securities Lending The Fund lends securities in its portfolio to certain broker-dealers or other institutional investors. When entering into a securities loan transaction, the Fund typically receives cash collateral from the borrower equal to at least the value of the securities loaned, which is invested in temporary cash investments. Credit Suisse, New York Branch, as the Fund's security lending agent, manages the Fund's securities lending collateral. The income earned on the investment of collateral is shared with the borrower and the lending agent in payment of any rebate due to the borrower with respect to the securities loan, and in compensation for the lending agent's services to the Fund. The Fund also continues to receive interest or payments in lieu of dividends on the securities loaned. Gain or loss on the value of the loaned securities that may occur during the term of the loan will be for the account of the Fund. The amount of the collateral is required to be adjusted daily to reflect any price fluctuation in the value of the loaned securities. The Fund has the right, under the lending agreement, to terminate the loan and recover the securities from the borrower with prior notice. The Fund will be required to return the cash collateral to the borrower and could suffer a loss if the value of the collateral, as invested, has declined. F. Repurchase Agreements With respect to repurchase agreements entered into by the Fund, the value of the underlying securities (collateral), including accrued interest, is required to be at least equal to or in excess of the value of the repurchase agreement. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Fund's custodian or subcustodians. The Fund's investment adviser, Pioneer Investment Management, Inc. (PIM), is responsible for determining that the value of the collateral remains at least equal to the repurchase price. 2. Management Agreement Pioneer Investment Management, Inc. (PIM), a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. PIM receives a basic fee that is calculated at the annual rate of 0.75% of the Fund's average daily net assets up to $1 billion; and 0.70% of the excess over $1 billion. For the year ended 30 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 December 31, 2008, the net management fee was equivalent to 0.75% of average net assets. PIM, and not the Fund, pays a portion of the fee it receives from the Fund to L. Roy Papp & Associates, LLP (Papp) as compensation for its sub-advisory services to the Fund. PIM has agreed to limit ordinary operating expenses to the extent required to reduce Fund expenses to 1.25%, 2.15% and 2.15% of the average daily net assets attributable to Class A, Class B and Class C shares, respectively. These expense limitations are in effect through May 1, 2010. PIM expects to continue its limitation of expenses unless the expense limit agreement with the Fund is terminated pursuant to the terms of the expense limit agreement. However, there can be no assurance that PIM will extend the expense limitation beyond May 1, 2010. The Fund may terminate the expense limitation agreement at any time; provided, however, that the Board of Trustees would not take such action unless it determined termination of the agreement be in the best interests of the Fund and its shareowners. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund. Included in "Due to Affiliates" reflected on the Statement of Assets and Liabilities is $264 in management fees, administrative costs and certain other fees payable to PIM at December 31, 2008. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimbursed PIMSS for out-of-pocket expenses related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended December 31, 2008, such out of pocket expenses by class of shares were as follows: - --------------------------------------------- Shareholder Communications: - --------------------------------------------- Class A $10,021 Class B 1,429 Class C 2,345 - --------------------------------------------- Total $13,795 ============================================= Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $6,484 in transfer agent fees and shareholder communications expense payable to PIMSS at December 31, 2008. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 31 4. Distribution and Service Plans The Fund adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A, Class B and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund pays PFD 1.00% of the average daily net assets attributable to Class B and Class C shares. The fee for Class B and Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class B and Class C shares. Prior to February 1, 2008, PFD was reimbursed under the Distribution Plan for distribution expenses in an amount of up to 0.25% of the average daily net assets attributable to Class A shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $130 in distribution fees payable to PFD at December 31, 2008. In addition, redemptions of each class of shares may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on certain net asset value purchases of Class A shares that are redeemed within 18 months of purchase. Class B shares that are redeemed within five years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00% based on the lower of cost or market value of shares being redeemed. Proceeds from the CDSCs are paid to PFD. For the year ended December 31, 2008, CDSCs in the amount of $4,445 were paid to PFD. 5. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS resulting in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended December 31, 2008, the Fund's expenses were reduced by $795 under such arrangements. 6. New Pronouncement In March 2008, Statement of Financial Accounting Standards No. 161, Disclosures about Derivative Instruments and Hedging Activities ("SFAS 161"), was issued and is effective for fiscal years beginning after November 15, 2008. SFAS 161 requires enhanced disclosures about an entity's derivative and hedging activities. Management is currently evaluating the impact the adoption of SFAS 161 will have on the Fund's financial statement disclosures. 32 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust II and the Shareowners of Pioneer AmPac Growth Fund: - -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer AmPac Growth Fund, one of the series constituting Pioneer Series Trust II (the "Trust"), including the schedule of investments, as of December 31, 2008, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and financial highlights for each of the periods indicated therein. These financial statements and financial highlights are the responsibility of the Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Trust's internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of December 31, 2008, by correspondence with the custodian and brokers. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer AmPac Growth Fund of the Pioneer Series Trust II at December 31, 2008, the results of its operations for the year then ended, and the changes in its net assets for each of the two years in the period then ended, and financial highlights for each of the periods indicated therein, in conformity with U.S. generally accepted accounting principles. /s/Ernst & Young LLP Boston, Massachusetts February 18, 2009 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 33 Approval of Sub-Advisory Agreement (unaudited) Pioneer Investment Management, Inc. (PIM) serves as the Fund's investment adviser pursuant to an investment advisory agreement between PIM and the Fund. PIM has retained L. Roy Papp & Associates, Inc. to serve as the sub-adviser to the Fund pursuant to a sub-advisory agreement between PIM and the sub-adviser. At a meeting held on January 8, 2008, the Trustees of the Fund approved an amended and restated investment advisory agreement between the Fund and PIM. Shareholders of the Fund approved the amended and restated investment advisory agreement on May 13, 2008. The material factors and conclusions with respect thereto that formed the basis for the Trustees' approval of the amended and restated investment advisory agreement are included in the Fund's semi-annual report for the period ended June 30, 2008. At a meeting held on November 11, 2008, based on their evaluation of the information provided by PIM and the sub-adviser, the Trustees of the Fund, including the independent Trustees voting separately, unanimously approved the continuation of the sub-advisory agreement for the Fund for another year. In considering the continuation of the sub-advisory agreement, the Trustees considered various factors that they determined were relevant, including the factors described below. The Trustees did not identify any single factor as the controlling factor in determining to approve the continuation of the sub- advisory agreement. Nature, Extent and Quality of Services The Trustees considered the nature, extent and quality of the services provided to the Fund by the sub-adviser, taking into account the investment objective and strategy of the Fund and the information related to the Fund provided to the Trustees at each quarterly meeting. The Trustees reviewed the terms of the sub-advisory agreement. The Trustees also reviewed the sub-adviser's investment approach for the Fund and its research process. The Trustees considered the resources of the sub-adviser and the personnel of the sub-adviser who provide investment management services to the Fund. Based on these considerations, the Trustees concluded that the nature, extent and quality of services provided by the sub-adviser to the Fund were satisfactory and consistent with the terms of the sub-advisory agreement. Performance of the Fund The Trustees considered the performance results of the Fund over various time periods. They reviewed information comparing the Fund's performance with the average performance of its peer group of funds as classified by 34 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Morningstar, Inc. (Morningstar), an independent provider of investment company data, and with the performance of the Fund's benchmark index. The Trustees considered that the Fund's annualized total return was in the third quintile of its Morningstar category for the one and three year periods ended June 30, 2008. (In all quintile rankings referred to throughout this disclosure, first quintile is most favorable to the Fund's shareowners. Thus, highest relative performance would be first quintile and lowest relative expenses would also be first quintile.) The Trustees concluded that the investment performance of the Fund was satisfactory. Sub-advisory Fee and Expenses The Trustees considered the fees payable to the sub-adviser under the sub- advisory agreement. They also considered that PIM, not the Fund, paid the sub-adviser out of the management fees paid to PIM under the investment advisory agreement. The Trustees considered information regarding the management fees and expenses of the Fund in comparison to the management fees of its peer group of funds as classified by Morningstar and the expense ratios of a peer group of funds selected on the basis of criteria determined by the independent Trustees for this purpose using data provided by Strategic Insight Mutual Fund Research and Consulting, LLC (Strategic Insight), an independent third party. The Trustees considered that the Fund's management fee for the twelve months ended June 30, 2008 was in the third quintile relative to the management fees paid by other funds in its peer group Morningstar category for the comparable period. The Trustees also considered that the Fund's expense ratio for the twelve months ended June 30, 2008 was in the second quintile relative to its Strategic Insight peer group. The Trustees also reviewed the advisory fees charged by the sub-adviser to its separate account clients. The Trustees noted that the fee rates for those separate accounts generally were higher than the sub-advisory fees paid to the sub-adviser with respect to the Fund. It was noted that the sub-adviser reported that it did not currently manage any accounts with investment strategies that were similar to the Fund. The Trustees concluded that the sub-advisory fee payable by PIM to the sub- adviser of the Fund was reasonable in relation to the nature and quality of services provided by the sub-adviser. The Trustees also concluded that the Fund's expense ratio was reasonable, taking into account the contractual expense limitation agreed to by PIM with respect to the Fund. Profitability The Trustees considered information provided by PIM regarding the profitability of PIM with respect to the advisory services provided by PIM to the Fund, including the methodology used by PIM in allocating certain of its costs to the management of the Fund. They also considered PIM's profit margin in Pioneer AmPac Growth Fund | Annual Report | 12/31/08 35 connection with the overall operation of the Fund. The Trustees further considered the sub-advisory fees received by the sub-adviser with respect to the Fund and the percentage that such fees represented of the sub-adviser's overall revenues (for the 12-month period ended December 31, 2007). They also reviewed the financial results realized by PIM and its affiliates from non-fund businesses. The Trustees considered the profit margins with respect to the Fund in comparison to the limited industry data available and noted that the profitability of any adviser was affected by numerous factors, including its organizational structure and method for allocating expenses. The Trustees recognized that each of PIM and the sub-adviser should be entitled to earn a reasonable level of profit for the services provided to the Fund. The Trustees concluded that the profit margins with respect to the management of the Fund were not unreasonable. Economies of Scale The Trustees considered the economies of scale with respect to the management of the Fund, whether the Fund had appropriately benefited from any economies of scale, and whether there was potential for realization of any further economies of scale. The Trustees concluded that, because of the breakpoints in the management and sub-advisory fee schedules and the reduced fee rates above certain asset levels, any perceived or potential economies of scale would be shared with the Fund. Other Benefits The Trustees considered that the sub-adviser reported that it does not receive any other benefits from its relationship with the Portfolio. Conclusion After consideration of the factors described above as well as other factors, the Trustees, including all of the independent Trustees, concluded that the sub-advisory agreement for the Fund between PIM and the sub-adviser, including the fees payable thereunder, was fair and reasonable and voted to approve the continuation of the sub-advisory agreement for the Fund. 36 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Ernst & Young LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at www.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. Trustees and Officers The Board of Trustees provides broad supervision over the fund's affairs. The officers of the fund are responsible for the fund's operations. The Trustees and officers are listed below, together with their principal occupations during the past five years. Trustees who are interested persons of the fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the fund are referred to as Independent Trustees. Each of the Trustees serves as a trustee of each of the 76 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the fund is 60 State Street, Boston, Massachusetts 02109. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 37 Interested Trustees - -------------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office - -------------------------------------------------------------------------------- John F. Cogan, Jr. (82)* Chairman of the Board, Trustee since 2003. Trustee and President Serves until a successor trustee is elected or earlier retirement or removal. - -------------------------------------------------------------------------------- Daniel K. Kingsbury (50)* Trustee and Executive Trustee since 2008. Vice President Serves until a successor trustee is elected or earlier retirement or removal. - -------------------------------------------------------------------------------- * Mr. Cogan and Mr. Kingsbury are Interested Trustees because they are officers or directors of the fund's investment adviser and certain of its affiliates. Interested Trustees - --------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Trustee - --------------------------------------------------------------------------------------------------------------------- John F. Cogan, Jr. (82)* Deputy Chairman and a Director of Pioneer Global Asset Man- None agement S.p.A. ("PGAM"); Non-Executive Chairman and a Direc- tor of Pioneer Investment Management USA Inc. ("PIM-USA"); Chairman and a Director of Pioneer; Chairman and Director of Pioneer Institutional Asset Management, Inc. (since 2006); Director of Pioneer Alternative Investment Management Limited (Dublin); President and a Director of Pioneer Alternative Invest- ment Management (Bermuda) Limited and affiliated funds; Director of PIOGLOBAL Real Estate Investment Fund (Russia) (until June 2006); Director of Nano-C, Inc. (since 2003); Director of Cole Management Inc. (since 2004); Director of Fiduciary Counseling, Inc.; President and Director of Pioneer Funds Dis- tributor, Inc. ("PFD") (until May 2006); President of all of the Pioneer Funds; and Of Counsel, Wilmer Cutler Pickering Hale and Dorr LLP - --------------------------------------------------------------------------------------------------------------------- Daniel K. Kingsbury (50)* Director, CEO and President of Pioneer Investment Management None USA Inc. (since February 2007); Director and President of Pioneer Investment Management, Inc. and Pioneer Institutional Asset Management, Inc. (since February 2007); Executive Vice President of all of the Pioneer Funds (since March 2007); Director of Pioneer Global Asset Management S.p.A. (since April 2007); Head of New Markets Division, Pioneer Global Asset Management S.p.A. (2000 - 2007) - --------------------------------------------------------------------------------------------------------------------- * Mr. Cogan and Mr. Kingsbury are Interested Trustees because they are officers or directors of the fund's investment adviser and certain of its affiliates. 38 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Independent Trustees - ---------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office David R. Bock (65) Trustee Trustee since 2005. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------- Mary K. Bush (60) Trustee Trustee since 2003. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------- Independent Trustees - ------------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Trustee - ------------------------------------------------------------------------------------------------------------------------- David R. Bock (65) Executive Vice President and Chief Financial Officer, I-trax, Inc. Director of Enterprise Com- (publicly traded health care services company) (2004 - 2007); munity Investment, Inc. Partner, Federal City Capital Advisors (boutique merchant bank) (privately-held affordable (1997 to 2004 and 2008 - present); and Executive Vice Presi- housing finance company); dent and Chief Financial Officer, Pedestal Inc. (internet-based and Director of New York mortgage trading company) (2000 - 2002) Mortgage Trust (publicly traded mortgage REIT) - ------------------------------------------------------------------------------------------------------------------------- Mary K. Bush (60) President, Bush International, LLC (international financial Director of Marriott Interna- advisory firm) tional, Inc., Director of Dis- cover Financial Services (credit card issuer and elec- tronic payment services); Director of Briggs & Stratton Co. (engine manufacturer); Director of UAL Corporation (airline holding company) Director of Mantech Interna- tional Corporation (national security, defense, and intel- ligence technology firm); and Member, Board of Governors, Investment Company Institute - ------------------------------------------------------------------------------------------------------------------------- Pioneer AmPac Growth Fund | Annual Report | 12/31/08 39 Independent Trustees (continued) - ----------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office Benjamin M. Friedman (64) Trustee Trustee since 2008. Serves until a successor trustee is elected or earlier retirement or removal - ----------------------------------------------------------------------- Margaret B.W. Graham (61) Trustee Trustee since 2003. Serves until a successor trustee is elected or earlier retirement or removal. - ----------------------------------------------------------------------- Thomas J. Perna (58) Trustee Trustee since 2006. Serves until a successor trustee is elected or earlier retirement or removal. - ----------------------------------------------------------------------- Marguerite A. Piret (60) Trustee Trustee since 2003. Serves until a successor trustee is elected or earlier retirement or removal. Stephen K. West (80) Trustee Trustee since 2008. - ----------------------------------------------------------------------- Serves until a successor trustee is elected or earlier retirement or removal. - ----------------------------------------------------------------------- - ----------------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Trustee Benjamin M. Friedman (64) Professor, Harvard University Trustee, Mellon Institutional Funds Investment Trust and Mellon Institutional Funds Master Portfolio (oversees 17 portfolios in fund complex) - ----------------------------------------------------------------------------------------------------------------------------- Margaret B.W. Graham (61) Founding Director, Vice-President and Corporate Secretary, The None Winthrop Group, Inc. (consulting firm); and Desautels Faculty of Management, McGill University - ----------------------------------------------------------------------------------------------------------------------------- Thomas J. Perna (58) Chief Executive Officer, Quadriserv, Inc. (2008 - present) (tech- None nology products for securities lending industry); Private investor (2004 - 2008); and Senior Executive Vice President, The Bank of New York (financial and securities services) (1986 - 2004) - ----------------------------------------------------------------------------------------------------------------------------- Marguerite A. Piret (60) President and Chief Executive Officer, Newbury, Piret & Company, Director of New America Inc. (investment banking firm) High Income Fund, Inc. (closed-end investment company) - ----------------------------------------------------------------------------------------------------------------------------- Stephen K. West (80) Senior Counsel, Sullivan & Cromwell LLP (law firm) Director, The Swiss Helvetia Fund, Inc. (closed-end investment company) - ----------------------------------------------------------------------------------------------------------------------------- 40 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 Fund Officers - -------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office - -------------------------------------------------------------------------- Dorothy E. Bourassa (60) Secretary Since 2003. Serves at the discretion of the Board - -------------------------------------------------------------------------- Christopher J. Kelley (44) Assistant Secretary Since 2003. Serves at the discretion of the Board - -------------------------------------------------------------------------- Mark E. Bradley (49) Treasurer Since 2008. Serves at the discretion of the Board - -------------------------------------------------------------------------- Luis I. Presutti (43) Assistant Treasurer Since 2003. Serves at the discretion of the Board - -------------------------------------------------------------------------- Gary Sullivan (50) Assistant Treasurer Since 2003. Serves at the discretion of the Board - -------------------------------------------------------------------------- Fund Officers - ---------------------------------------------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Officer - ---------------------------------------------------------------------------------------------------------------------- Dorothy E. Bourassa (60) Secretary of PIM-USA; Senior Vice President - Legal of Pioneer; None Secretary/Clerk of most of PIM-USA's subsidiaries; and Secretary of all of the Pioneer Funds since September 2003 (Assistant Secretary from November 2000 to September 2003) - ---------------------------------------------------------------------------------------------------------------------- Christopher J. Kelley (44) Associate General Counsel of Pioneer since January 2008 None and Assistant Secretary of all of the Pioneer Funds since September 2003; Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 - ---------------------------------------------------------------------------------------------------------------------- Mark E. Bradley (49) Vice President - Fund Accounting, Administration and Controller- None ship Services of Pioneer; and Treasurer of all of the Pioneer Funds since March 2008; Deputy Treasurer of Pioneer from March 2004 to February 2008; Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008; and Treasurer and Senior Vice President, CDC IXIS Asset Management Services from 2002 to 2003 - ---------------------------------------------------------------------------------------------------------------------- Luis I. Presutti (43) Assistant Vice President - Fund Accounting, Administration and None Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ---------------------------------------------------------------------------------------------------------------------- Gary Sullivan (50) Fund Accounting Manager - Fund Accounting, Administration and None Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ---------------------------------------------------------------------------------------------------------------------- Pioneer AmPac Growth Fund | Annual Report | 12/31/08 41 Fund Officers (continued) - -------------------------------------------------------------------------------- Position Held Length of Service Name and Age with the Fund and Term of Office - -------------------------------------------------------------------------------- Katherine Kim Sullivan (35) Assistant Treasurer Since 2003. Serves at the discretion of the Board - -------------------------------------------------------------------------------- Teri W. Anderholm (49) Chief Compliance Officer Since 2007. Serves at the discretion of the Board - -------------------------------------------------------------------------------- - ------------------------------------------------------------------------------------------------------------------------ Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Officer Katherine Kim Sullivan (35) Fund Administration Manager - Fund Accounting, Administration None and Controllership Services since June 2003 and Assistant Treasurer of all of the Pioneer Funds since September 2003; Assistant Vice President - Mutual Fund Operations of State Street Corporation from June 2002 to June 2003 (formerly Deutsche Bank Asset Management) - ------------------------------------------------------------------------------------------------------------------------ Teri W. Anderholm (49) Chief Compliance Officer of Pioneer since December 2006 and of None all the Pioneer Funds since January 2007; Vice President and Compliance Officer, MFS Investment Management (August 2005 to December 2006); Consultant, Fidelity Investments (February 2005 to July 2005); Independent Consultant (July 1997 to February 2005) - ------------------------------------------------------------------------------------------------------------------------ 42 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 This page for your notes. Pioneer AmPac Growth Fund | Annual Report | 12/31/08 43 This page for your notes. 44 Pioneer AmPac Growth Fund | Annual Report | 12/31/08 How To Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: - -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM)for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Telecommunications Device for the Deaf (TDD) 1-800-225-1997 Write to us: - -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: pioneerinvestments.com This report must be accompanied by a prospectus. The Fund files a complete statement of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. - -------------------------------------------------------------------------------- Pioneer AMT-Free CA Municipal Fund - -------------------------------------------------------------------------------- Annual Report | December 31, 2008 - -------------------------------------------------------------------------------- Ticker Symbols: Class A CATAX Class B CATBX Class C CATCX [LOGO] PIONEER Investments(R) visit us: pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 10 Comparing Ongoing Fund Expenses 13 Schedule of Investments 15 Financial Statements 18 Notes to Financial Statements 25 Report of Independent Registered Public Accounting Firm 31 Trustees, Officers and Service Providers 33 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 1 President's Letter Dear Shareowner, Stock and bond markets around the globe this year have experienced one of their most tumultuous periods in history. Investors have witnessed volatility of a magnitude that many have never before seen. Distance often provides the best vantage point for perspective. Still, we believe that the benefits of basic investment principles that have stood the test of time -- even in the midst of market turmoil -- cannot be underestimated. First, invest for the long term. The founder of Pioneer Investments, Philip L. Carret, began his investment career during the 1920s. One lesson he learned is that while great prosperity affords an advantageous time for selling stocks, extreme economic slumps can create opportunities for purchase. Indeed, many of our portfolio managers, who follow the value-conscious investing approach of our founder, are looking at recent market conditions as an opportunity to buy companies whose shares we believe have been unjustifiably beaten down by indiscriminate selling, but that we have identified as having strong prospects over time. While investors may be facing a sustained market downturn, we continue to believe that patience, along with staying invested in the market, are important considerations for long-term investors. A second principle is to stay diversified across different types of investments. The global scope of the current market weakness poses challenges for this basic investment axiom. But the turbulence makes now a good time to reassess your portfolio and make sure that your investments continue to meet your needs. We believe you should work closely with your financial advisor to find the mix of stocks, bonds and money market assets that is best aligned to your particular risk tolerance and investment objective. As the investment markets sort through the continuing crisis in the financial industry, we are staying focused on the fundamentals and risk management. With more than 80 years of experience behind us, we have learned how to navigate turbulent markets. At Pioneer Investments, risk management has always been a critical part of our culture -- not just during periods of extraordinary volatility. Our investment process is based on fundamental research, quantitative analysis and active portfolio management. This three-pillared process, which we apply to each of our portfolios, is supported by an integrated team approach and is designed to carefully balance risk and reward. While we 2 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 see potential chances for making money in many corners of the market, it takes research and experience to separate solid investment opportunities from speculation. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at www.pioneerinvestments.com. Thank you for investing with Pioneer. Respectfully, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 3 Portfolio Management Discussion | 12/31/08 In the following interview, Portfolio Manager Stephen C. Bauer outlines the investment environment for California tax-free bonds during the Fund's most recent fiscal year ended December 31, 2008, the Fund's performance during the period, his investment strategy and his outlook. Q How did the Fund perform during its most recent fiscal year ended December 31, 2008? A For the 12 months ended December 31, 2008, Pioneer AMT-Free California Municipal Fund's Class A shares produced a -16.72% return at net asset value. The Fund's benchmark, the Barclays Capital Municipal Bond Index, returned -2.47% over the same 12-month period, and the average return of the 119 funds in Lipper's California Municipal Debt Funds Category was -11.53%. Lipper Analytical Services is an independent monitor of mutual fund performance. Q How would you describe the investing environment for tax-exempt bonds during the 12 months ended December 31, 2008? A The year 2008 represented one of the most unusual and volatile periods ever witnessed in the municipal bond market. Early in the year, severe financial difficulties related to the housing crisis caused the three largest "monoline" insurers -- FGIC, MBIA and AMBAC -- to lose their AAA ratings. The loss of AAA status for the three monolines meant that the underlying credits for a host of insured municipal bonds had to be painstakingly re-evaluated by market watchers (which sparked significant price volatility). Another market disruption in the first months of 2008 came from the activities of hedge fund managers, who in the past had profited by borrowing large amounts at low short-term rates and investing the proceeds in higher-yielding long-term municipal bonds. However, in mid to late February, many hedge fund managers were forced to sell billions of dollars of long-term municipal bonds to meet margin calls. The huge selloff temporarily seized up the municipal market until some private sale arrangements of hedge fund holdings ignited a municipal rally that lasted into the middle of May. In the fall of 2008, with the collapse of Lehman Brothers and the Federal government's rescues of AIG, Fannie Mae, Freddie Mac and other prominent financial institutions, the credit crisis mushroomed, and the municipal market's reasonably sound fundamental characteristics were ignored by investors, replaced by intense anxiety over the health of the U.S. financial system. Lehman Brothers' disappearance made banks and brokers barely 4 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 willing to lend or trade to an extent that we have rarely witnessed. The freeze-up in the municipal bond market began in October 2008 and peaked in early December. Even high-quality tax-free bonds were trading at steep discounts during this time, as the credit markets engaged in a frenzied "flight to quality" to U.S. Treasury and agency securities. Finally, in early December 2008, with municipal issuance at a standstill, selling pressure from hedge funds abating and municipal/Treasury yield ratios at unprecedented levels (long-term Treasuries yielding 2.50% and AAA-rated municipals of the same maturity yielding 5.50% to 6.00%), investors began to snap up tax-exempt bonds at attractive yields, and the municipal market improved over the final three weeks of 2008. Again, in my view, fundamental factors such as issuing municipalities' ability to raise taxes or cut spending in order to balance budgets, did not support such a high municipal yield premium over Treasuries. This circumstance spurred bargain hunting among investors seeking to lock in high yields. In California, the state's fiscal problems have worsened. In line with the rest of the country's recessionary circumstances, California's sales and income tax receipts have slowed significantly, and the state's leaders are taking a long time to come to an agreement on a budget. California's budget gap is much bigger than most other states, but the state's considerable resources also dwarf most others. Q What was your investment strategy for the Fund during the 12-month period ended December 31, 2008? A As always, our principal strategy for the Fund was to purchase and hold discounted long-term bonds, as these investments offer the highest yields in the municipal marketplace. We also believe that they offer the most attractive value over time. Because of the lack of AAA insurance on many new issues in recent months, in the first half of 2008 high-quality issuers had to come to market with higher yields in order to attract investors. In the first six months of the annual reporting period, we focused on several of these opportunities, purchasing bonds with yield "spreads" over AAA bonds that were double or triple what they had been in recent years. The purchases included hospital bonds in California's Statewide Community Development Authority for Sutter Hospital, and St. Joseph Hospital. As of the close of the period on December 31, 2008, 43% of the Fund's portfolio was rated AAA (or the equivalent) or AA. In addition, the Fund is broadly diversified among 30 issuers from all areas of the state. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 5 Q What were the largest contributors to and detractors from Fund performance in 2008? A In a difficult market, municipal bond interest rate spreads (or differences in yield) between long- and short-term issues widened dramatically, negatively affecting the bond prices of longer-term issues, which make up most of the Fund's portfolio. The Fund's average maturity is significantly longer than that of the Barclays Capital Municipal Bond Index, which means that it will generally underperform the benchmark when long-term interest rates are rising (such as through much of 2008) and outperform when those rates are declining. Of course, over the long term, we believe the Fund's shareholders should benefit from the higher yields of the long-term bonds held in the Fund's portfolio. One of the largest individual detractors from performance came from California Municipal Finance Authority for Community Hospital bonds (rated BBB+), which declined in price as yield "spreads" between AAA and lower quality bonds widened substantially during the fourth quarter. Similarly affected were the Fund's holdings in California Redevelopment Agency bonds based in Redding. We believe both bond issues are fundamentally sound and the Fund will continue to hold them. Short-term issues in the form of pre-refunded municipal bonds were the strongest contributors to performance over the period. An example comes from Golden State tobacco bonds pre-refunded to 2013. Q What is your outlook going forward? A Statistical reports regarding the state of the U.S. economy in late 2008 and early 2009 continued to be dismal, and the economic situation could deteriorate further. President Obama and Congress will need to act quickly on spending programs to revive the economy. State and local government officials are facing their most difficult budgetary conditions in more than 50 years, but municipal bond defaults have remained at a very low level. We are confident that in most cases officials' experience in dealing with trying economic circumstances will see California and its agencies and municipalities through the crisis. In terms of market volatility, the hope would be that in 2009 market behavior will be based more on fundamental factors and less on fears about the health of financial firms and supply/demand imbalances. The Fund will continue to hold long-term issues that we think have the best chance to perform well, and we will seek to avoid those that might encounter significant budgetary problems. We will also seek to lock in attractive yields for the Fund from high-quality tax-free bonds, as we feel there are many promising opportunities in the market. 6 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 We believe that Pioneer AMT-Free California Municipal Fund continues to be an option for suitable investors seeking high income free from federal income tax and California state personal income tax. Please refer to the Schedule of Investments on pages 15-17 for a full listing of Fund securities. When interest rates rise, the prices of fixed-income securities in the Fund will generally fall. Conversely, when interest rates fall, the prices of fixed-income securities in the Fund will generally rise. Investments in the Fund are subject to possible loss due to the financial failure of issuers of underlying securities and their inability to meet their debt obligations. Investing primarily in the securities issued by California and its municipalities makes the Fund more vulnerable to unfavorable developments in California than are funds that invest in municipal securities of many states. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These opinions should not be relied upon for any other purposes. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 7 Portfolio Summary | 12/31/08 Portfolio Quality - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE DATA BELOW WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] AAA 8.6% AA 39 0% A 38.7% BBB 9.5% BB & Lower 3.9% Commercial Paper 0.3% Sector Distribution - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE DATA BELOW WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] Insured 50.8% Health 16.7% Water & Sewer 9.2% Various Revenues 9.1% Housing 4.6% Transportation 3.9% Special Revenues 3.7% General Obligation 1.7% Reserves 0.3% 10 Largest Holdings* - -------------------------------------------------------------------------------- (As a percentage of total debt holdings) 1. Madera California District Water, 5.5%, 1/1/33 4.83% 2. Alameda Corridor Transportation Authority, 4.75%, 10/1/25 4.68 3. California State Department of Veteran Affairs, 4.75%, 12/1/25 4.64 4. California Statewide, 5.75%, 7/1/47 4.48 5. Long Beach California Finance Authority, 5.5%, 11/15/37 4.37 6. California Statewide Communities Development Authority, 5.75%, 8/15/38 4.29 7. Anaheim California Public Financing Authority Lease, 4.25%, 9/1/35 4.27 8. California Municipal Finance Agency, 5.25%, 2/1/37 4.07 9. San Joaquin Hills Transportation Corridor Agency, 5.0%, 1/1/33 3.93 10. Golden State Tobacco Securitization, 6.75%, 6/1/39 3.76 * The list excludes temporary cash investments and derivative investments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 8 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Prices and Distributions | 12/31/08 Net Asset Value per Share - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Class 12/31/08 12/31/07 - -------------------------------------------------------------------------------- A $ 9.65 $ 12.19 - -------------------------------------------------------------------------------- B $ 9.60 $ 12.12 - -------------------------------------------------------------------------------- C $ 9.56 $ 12.08 - -------------------------------------------------------------------------------- Distributions per Share: 1/1/08-12/31/08 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains - -------------------------------------------------------------------------------- A $ 0.5365 $-- $ 0.0267 - -------------------------------------------------------------------------------- B $ 0.4294 $-- $ 0.0267 - -------------------------------------------------------------------------------- C $ 0.4371 $-- $ 0.0267 - -------------------------------------------------------------------------------- Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 9 Performance Update | 12/31/08 Class A Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AMT-Free CA Municipal Fund at public offering price, compared to that of the Barclays Capital Municipal Bond Index. Average Annual Total Returns (As of December 31, 2008) - ------------------------------------------------------------------ Net Asset Public Offering Period Value (NAV) Price (POP) - ------------------------------------------------------------------ 10 Years 2.21% 1.62% 5 Years -0.31 -1.23 1 Year -16.72 -20.44 - ------------------------------------------------------------------ Expense Ratio (Per prospectus dated May 1, 2008) - ------------------------------------------------------------------ Gross Net - ------------------------------------------------------------------ 0.95% 0.86% - ------------------------------------------------------------------ [THE DATA BELOW WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer AMT-Free Barclay's Capital Date CA Municipal Fund Municipal Bond Index 12/98 9,550 10,000 8,554 9,794 12/00 10,128 10,939 10,516 11,499 12/02 11,389 12,604 11,934 13,274 12/04 12,563 13,868 13,435 14,356 12/06 14,138 15,051 14,107 15,557 12/08 11,748 15,172 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 4.5% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Pioneer AMT-Free CA Municipal Fund was created through the reorganization of predecessor Safeco California Tax-Free Income Fund on December 10, 2004. The performance of Class A shares of the Fund includes the performance of the predecessor fund's Class A shares, which has been restated to reflect differences in any applicable sales charges (but not differences in expenses). If all the expenses of the Fund were reflected, the performance would be lower. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers fund performance would be lower. Waivers may not be in effect for all funds and can be rescinded at any time. See the prospectus and financial statements for complete details. The net expense ratio reflects the contractual expense limitations currently in effect through 5/1/12 for Class A shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. The Barclays Capital Municipal Bond Index is a broad measure of the municipal bond market. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. You cannot invest directly in an index. 10 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Class B Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AMT-Free CA Municipal Fund, compared to that of the Barclays Capital Municipal Bond Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- 10 Years 1.35% 1.35% 5 Years -1.24 -1.24 1 Year -17.44 -20.61 - ---------------------------------------------------------------- Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 1.78% 1.76% - ---------------------------------------------------------------- [THE DATA BELOW WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer AMT-Free Barclay's Capital Date CA Municipal Fund Municipal Bond Index 12/98 10,000 10,000 8,992 9,794 12/00 10,576 10,939 10,897 11,499 12/02 11,711 12,604 12,175 13,274 12/04 12,744 13,868 13,431 14,356 12/06 14,016 15,051 13,858 15,557 12/08 11,440 15,172 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If Redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). Class B shares reflect the deduction of the maximum applicable contingent deferred sales charge (CDSC). The maximum CDSC is 4.0% and declines over five years. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Pioneer AMT-Free CA Municipal Fund was created through the reorganization of predecessor Safeco California Tax-Free Income Fund on December 10, 2004. The performance of Class B shares of the Fund includes the performance of the predecessor fund's Class B shares, which has been restated to reflect differences in any applicable sales charges (but not differences in expenses). If all the expenses of the Fund were reflected, the performance would be lower. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers fund performance would be lower. Waivers may not be in effect for all funds and can be rescinded at any time. See the prospectus and financial statements for complete details. The net expense ratio reflects the contractual expense limitation currently in effect through 5/1/10 for Class B shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. The Barclays Capital Municipal Bond Index is a broad measure of the municipal bond market. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. You cannot invest directly in an Index. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 11 Performance Update | 12/31/08 Class C Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AMT-Free CA Municipal Fund, compared to that of the Barclays Capital Municipal Bond Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- Life-of-Class (10/1/03) -0.81% -0.81% 5 Years -1.22 -1.22 1 Year -17.45 -17.45 - ---------------------------------------------------------------- Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 1.68 1.68 - ---------------------------------------------------------------- [THE DATA BELOW WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer AMT-Free Barclay's Capital Date CA Municipal Fund Municipal Bond Index 10/03 10,000 10,000 12/03 10,225 10,188 12/04 10,695 10,644 12/05 11,281 11,018 12/06 11,776 11,552 12/07 11,650 11,940 12/08 9,617 11,645 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). The performance of Class C shares does not reflect the 1% front-end sales charge in effect prior to February 1, 2004. If you paid a 1% sales charge, your returns would be lower than those shown above. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Pioneer AMT-Free CA Municipal Fund was created through the reorganization of predecessor Safeco California Tax-Free Income Fund on December 10, 2004. The performance of Class C shares of the Fund includes the performance of the predecessor fund's Class C shares, which has been restated to reflect differences in any applicable sales charges (but not differences in expenses). If all the expenses of the Fund were reflected, the performance would be lower. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers fund performance would be lower. Waivers may not be in effect for all funds and can be rescinded at any time. See the prospectus and financial statements for complete details. The net expense ratio reflects the contractual expense limitation currently in effect through 5/1/10 for Class C shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. The Barclays Capital Municipal Bond Index is a broad measure of the municipal bond market. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. You cannot invest directly in an Index. 12 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables - -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer AMT-Free CA Municipal Fund Based on actual returns from July 1, 2008 through December 31, 2008. - -------------------------------------------------------------------------------- Share Class A B C - -------------------------------------------------------------------------------- Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - -------------------------------------------------------------------------------- Ending Account $ 843.26 $ 840.73 $ 838.92 Value on 12/31/08 - -------------------------------------------------------------------------------- Expenses Paid $ 3.98 $ 8.00 $ 7.95 During Period* - -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 0.86%, 1.73%, and 1.72% for Class A, Class B, and Class C shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 13 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. 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 the 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 tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below 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 transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer AMT-Free CA Municipal Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from July 1, 2008 through December 31, 2008. - -------------------------------------------------------------------------------- Share Class A B C - -------------------------------------------------------------------------------- Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - -------------------------------------------------------------------------------- Ending Account $ 1,020.81 $ 1,016.44 $ 1,016.49 Value on 12/31/08 - -------------------------------------------------------------------------------- Expenses Paid $ 4.37 $ 8.77 $ 8.72 During Period* - -------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 0.86%, 1.73%, and 1.72% for Class A, Class B, and Class C shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). 14 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Schedule of Investments | 12/31/08 - -------------------------------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value - -------------------------------------------------------------------------------------------------------- MUNICIPAL BONDS -- 97.9% Government -- 4.4% $ 3,000,000 A+/A1 California State, 4.25%, 8/1/33 $ 2,182,710 1,500,000 A+/A1 California State, 4.75%, 4/1/29 1,289,625 ----------- $ 3,472,335 - -------------------------------------------------------------------------------------------------------- Municipal Airport -- 2.4% 2,500,000 AA/A1 San Francisco California City & County Airports Community International, 4.5%, 5/1/32 $ 1,935,050 - -------------------------------------------------------------------------------------------------------- Municipal Development -- 22.5% 3,500,000 AA/A3 Alameda County California Redevelopment Agency, 4.375%, 8/1/30 $ 2,362,990 4,000,000 AA-/Aa3 California Statewide, 5.75%, 7/1/47 3,453,400 4,000,000 A+/NR California Statewide Communities Development Authority, 5.75%, 8/15/38 3,305,720 2,500,000 AA-/Aa3 California Statewide Municipality, 5.25%, 11/15/48 1,983,600 2,500,000 A/Baa1 Inglewood California Redevelopment Agency Tax Allocation, 4.75%, 5/1/38 1,577,650 3,815,000 A/NR Pittsburg California Redevelopment Agency, 4.25%, 9/1/34 2,370,755 3,000,000 A-/Aaa Rialto California Redevelopment Agency Tax Allocation, 6.25%, 9/1/37 2,659,980 ----------- $17,714,095 - -------------------------------------------------------------------------------------------------------- Municipal Facilities -- 5.4% 2,100,000 AA-/Baa1 Fresno Joint Powers Financing Authority Lease Revenue, 4.75%, 9/1/28 $ 1,834,245 3,000,000 A/Baa1 Los Angeles County California Certificates of Participation, 4.75%, 3/1/23 2,429,520 ----------- $ 4,263,765 - -------------------------------------------------------------------------------------------------------- Municipal General -- 6.9% 5,000,000 AA/A3 Anaheim California Public Financing Authority Lease, 4.25%, 9/1/35 $ 3,291,800 2,095,000 BBB+/NR Redding California Redevelopment, 4.5%, 9/1/26 1,250,526 1,500,000 BBB+/NR Redding California Redevelopment, 5.0%, 9/1/36 868,050 ----------- $ 5,410,376 - -------------------------------------------------------------------------------------------------------- Municipal Housing -- 4.5% 4,000,000 AA-/Aa2 California State Department of Veteran Affairs, 4.75%, 12/1/25 $ 3,575,560 - -------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 15 Schedule of Investments | 12/31/08 (continued) - --------------------------------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value - --------------------------------------------------------------------------------------------------------- Municipal Medical -- 16.7% $ 4,000,000 A/NR California Health Facilities Financing Authority, 5.0%, 3/1/33 $ 2,880,840 3,500,000 A/A2 California Health Facilities, 5.625%, 7/1/32 2,866,045 5,000,000 BBB-/Baa2 California Municipal Finance Agency, 5.25%, 2/1/37 3,140,900 4,000,000 BBB+/Baa1 California Statewide Communities Development Authority, 5.0%, 8/15/47 2,090,800 2,500,000 A+/A3 San Bernardino County California Certificates of Participation, 5.5%, 8/1/24 2,197,025 ----------- $13,175,610 - --------------------------------------------------------------------------------------------------------- Municipal School District -- 9.0% 2,500,000 AA-/Aa3 Los Angeles California University School District, 4.25%, 1/1/28 $ 2,066,400 1,885,000 AAA/Aa3 Oakland California University School District, 4.375%, 8/1/31 1,489,866 1,600,000 A+/WR Oxnard California School District, 4.375%, 8/1/33 1,240,128 2,180,000 AA/Baa1 Pomona Unified School District, 6.55%, 8/1/29 2,273,086 ----------- $ 7,069,480 - --------------------------------------------------------------------------------------------------------- Municipal Tobacco -- 3.7% 2,500,000 AAA/WR Golden State Tobacco Securitization, 6.75%, 6/1/39 $ 2,899,600 - --------------------------------------------------------------------------------------------------------- Municipal Transportation -- 8.4% 4,000,000 AA/A2 Alameda Corridor Transportation Authority, 4.75%, 10/1/25 $ 3,609,080 5,000,000 BB-/Ba2 San Joaquin Hills Transportation Corridor Agency, 5.0%, 1/1/33 3,029,850 ----------- $ 6,638,930 - --------------------------------------------------------------------------------------------------------- Municipal Utilities -- 7.2% 5,000,000 A/A2 Long Beach California Finance Authority, 5.5%, 11/15/37 $ 3,371,000 3,000,000 AAA/Aa3 Modesto California Wastewater Revenue, 4.25%, 11/1/36 2,291,610 ----------- $ 5,662,610 - --------------------------------------------------------------------------------------------------------- Municipal Water -- 6.8% 4,000,000 A-/NR Madera California District Water, 5.5%, 1/1/33 $ 3,728,122 2,000,000 AA/Baa1 Madera California Public, 4.375%, 3/1/31 1,594,500 ----------- $ 5,322,622 - --------------------------------------------------------------------------------------------------------- TOTAL MUNICIPAL BONDS (Cost $97,002,379) $77,140,033 - --------------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 97.9% (Cost $97,002,379) (a) $77,140,033 - --------------------------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 2.1% $ 1,639,664 - --------------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $78,779,697 ========================================================================================================= The accompanying notes are an integral part of these financial statements. 16 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 WR Withdrawn rating. NR Not rated by either S&P or Moody's. (a) At December 31, 2008, the net unrealized loss on investments based on cost for federal income tax purposes of $96,204,398 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $ 1,381,041 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (20,445,406) ------------ Net unrealized loss $(19,064,365) ============ Purchases and sales of securities (excluding temporary cash investments) for the year ended December 31, 2008 aggregated $32,798,445 and $38,277,570, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of December 31, 2008, in valuing the Fund's assets: - -------------------------------------------------------------------------------- Investments Valuation Inputs in Securities - -------------------------------------------------------------------------------- Level 1 -- Quoted Prices $ -- Level 2 -- Other Significant Observable Inputs 77,140,033 Level 3 -- Significant Unobservable Inputs -- - -------------------------------------------------------------------------------- Total $77,140,033 - -------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 17 Statement of Assets and Liabilities | 12/31/08 ASSETS: Investment in securities (cost $97,002,379) $ 77,140,033 Cash 174,234 Receivables -- Fund shares sold 123,627 Interest 1,660,437 Due from Pioneer Investment Management, Inc. 24,818 Other 3,966 - -------------------------------------------------------------------------------- Total assets $ 79,127,115 - -------------------------------------------------------------------------------- LIABILITIES: Payables -- Fund shares repurchased $ 134,853 Dividends 138,039 Due to affiliates 8,374 Accrued expenses 66,152 - -------------------------------------------------------------------------------- Total liabilities $ 347,418 - -------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $ 98,344,036 Undistributed net investment income 854,738 Accumulated net realized loss on investments (556,731) Net unrealized loss on investments (19,862,346) - -------------------------------------------------------------------------------- Total net assets $ 78,779,697 ================================================================================ NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $69,413,071/7,193,849 shares) $ 9.65 Class B (based on $803,950/83,770 shares) $ 9.60 Class C (based on $8,562,676/895,545 shares) $ 9.56 MAXIMUM OFFERING PRICE: Class A ($9.65 [divided by] 95.5%) $ 10.10 ================================================================================ The accompanying notes are an integral part of these financial statements. 18 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Statement of Operations For the Year Ended 12/31/08 INVESTMENT INCOME: Interest $5,491,461 - ---------------------------------------------------------------------------------------- Total investment income $ 5,491,461 - ---------------------------------------------------------------------------------------- EXPENSES: Management fees $ 501,996 Transfer agent fees Class A 30,854 Class B 890 Class C 2,523 Distribution fees Class A 223,420 Class B 8,680 Class C 101,601 Shareholder communications expense 27,910 Administrative fees 30,110 Custodian fees 8,318 Registration fees 8,137 Professional fees 66,394 Printing expense 21,373 Fees and expenses of nonaffiliated trustees 6,892 Miscellaneous 38,210 - ---------------------------------------------------------------------------------------- Total expenses $ 1,077,308 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (119,235) Less fees paid indirectly (774) - ---------------------------------------------------------------------------------------- Net expenses $ 957,299 - ---------------------------------------------------------------------------------------- Net investment income $ 4,534,162 - ---------------------------------------------------------------------------------------- REALIZED AND UNREALIZED LOSS ON INVESTMENTS Net realized loss on investments $ (565,203) - ---------------------------------------------------------------------------------------- Change in net unrealized gain on investments $(21,277,815) - ---------------------------------------------------------------------------------------- Net loss on investments $(21,843,018) - ---------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $(17,308,856) ======================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 19 Statement of Changes in Net Assets For the Years Ended 12/31/08 and 12/31/07, respectively - --------------------------------------------------------------------------------------------- Year Ended Year Ended 12/31/08 12/31/07 - --------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 4,534,162 $ 4,266,111 Net realized gain (loss) on investments (565,203) 1,198,825 Change in net unrealized gain (loss) on investments (21,277,815) (5,840,502) - --------------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $(17,308,856) $ (375,566) - --------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.54 and $0.52 per share, respectively) $ (4,203,467) $ (3,922,521) Class B ($0.43 and $0.40 per share, respectively) (32,985) (27,966) Class C ($0.44 and $0.41per share, respectively) (393,990) (290,012) Net realized gain: Class A ($0.03 and $0.11 per share, respectively) (196,900) (881,443) Class B ($0.03 and $0.11 per share, respectively) (2,080) (8,059) Class C ($0.03 and $0.11 per share, respectively) (24,098) (86,909) - --------------------------------------------------------------------------------------------- Total distributions to shareowners $ (4,853,520) $ (5,216,910) - --------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 16,736,270 $ 39,865,570 Reinvestment of distributions 2,948,966 3,249,377 Cost of shares repurchased (27,288,012) (23,026,766) - --------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from Fund share transactions $ (7,602,776) $ 20,088,181 - --------------------------------------------------------------------------------------------- Net increase (decrease) in net assets $(29,765,152) $ 14,495,705 NET ASSETS: Beginning of year 108,544,849 94,049,144 - --------------------------------------------------------------------------------------------- End of year $ 78,779,697 $108,544,849 - --------------------------------------------------------------------------------------------- Undistributed net investment income $ 854,738 $ 960,154 - --------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 20 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 - ---------------------------------------------------------------------------------------------------- '08 Shares '08 Amount '07 Shares '07 Amount - ---------------------------------------------------------------------------------------------------- Class A Shares sold 960,778 $10,955,699 2,678,403 $33,838,873 Reinvestment of distributions 251,433 2,794,059 251,413 3,142,454 Less shares repurchased (2,032,935) (22,462,563) (1,642,086) (20,545,659) - ---------------------------------------------------------------------------------------------------- Net increase (decrease) (820,724) $(8,712,805) 1,287,730 $16,435,668 ==================================================================================================== Class B Shares sold 33,506 $ 369,396 25,170 $ 315,513 Reinvestment of distributions 857 9,351 900 11,172 Less shares repurchased (25,395) (287,525) (11,478) (142,137) - ---------------------------------------------------------------------------------------------------- Net increase 8,968 $ 91,222 14,592 $ 184,548 ==================================================================================================== Class C Shares sold 483,042 $ 5,411,175 459,403 $ 5,711,184 Reinvestment of distributions 13,301 145,556 7,744 95,751 Less shares repurchased (423,376) (4,537,924) (189,415) (2,338,970) - ---------------------------------------------------------------------------------------------------- Net increase 72,967 $ 1,018,807 277,732 $ 3,467,965 ==================================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 21 Financial Highlights - ----------------------------------------------------------------------------------------------------------------------------------- Year Year Year Year Year Ended Ended Ended Ended Ended 12/31/08 12/31/07 12/31/06 12/31/05 12/31/04(a) - ----------------------------------------------------------------------------------------------------------------------------------- Class A Net asset value, beginning of period $ 12.19 $ 12.84 $ 12.86 $ 12.65 $ 12.69 - ----------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.54 $ 0.50 $ 0.42 $ 0.45 $ 0.53(b) Net realized and unrealized gain (loss) on investments (2.51) (0.52) 0.23 0.42 0.12 - ----------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (1.97) $ (0.02) $ 0.65 $ 0.87 $ 0.65 Distributions to shareowners: Net investment income (0.54) (0.52) (0.52) (0.53) (0.53) Net realized gain (0.03) (0.11) (0.15) (0.13) (0.16) - ----------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (2.54) $ (0.65) $ (0.02) $ 0.21 $ (0.04) - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.65 $ 12.19 $ 12.84 $ 12.86 $ 12.65 =================================================================================================================================== Total return* (16.72)% (0.22)% 5.23% 6.94% 5.22% Ratio of net expenses to average net assets+ 0.86% 0.86% 0.86% 0.86% 0.86% Ratio of net investment income to average net assets+ 4.61% 4.12% 4.19% 4.23% 4.21% Portfolio turnover rate 34% 21% 13% 7% 22% Net assets, end of period (in thousands) $ 69,413 $97,704 $86,345 $10,186 $ 87 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.99% 0.95% 1.03% 1.06% 1.04% Net investment income 4.48% 4.04% 4.02% 4.03% 4.03% Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 0.86% 0.86% 0.86% 0.86% 1.04% Net investment income 4.61% 4.12% 4.19% 4.23% 4.03% - ----------------------------------------------------------------------------------------------------------------------------------- (a) Effective August 2, 2004, PIM became the sub-advisor of the Fund and subsequently became the advisor on December 10, 2004. (b) Net investment income per share has been calculated using the average shares method. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + Ratios assuming no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 22 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 - ------------------------------------------------------------------------------------------------------------------------------------ Year Year Year Year Year Ended Ended Ended Ended Ended 12/31/08 12/31/07 12/31/06 12/31/05 12/31/04 (a) - ------------------------------------------------------------------------------------------------------------------------------------ Class B Net asset value, beginning of period $ 12.12 $ 12.77 $ 12.79 $ 12.64 $ 12.66 - ----------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.41 $ 0.38 $ 0.37 $ 0.32 $ 0.43(b) Net realized and unrealized gain (loss) on investments (2.47) (0.52) 0.17 0.36 0.14 - ----------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (2.06) $ (0.14) $ 0.54 $ 0.68 $ 0.57 Distributions to shareowners: Net investment income (0.43) (0.40) (0.41) (0.40) (0.43) Net realized gain (0.03) (0.11) (0.15) (0.13) (0.16) - ----------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (2.52) $ (0.65) $ (0.02) $ 0.15 $ (0.02) - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.60 $ 12.12 $ 12.77 $ 12.79 $ 12.64 =================================================================================================================================== Total return* (17.44)% (1.13)% 4.36% 5.39% 4.62% Ratio of net expenses to average net assets+ 1.73% 1.76% 1.76% 1.78% 1.68% Ratio of net investment income to average net assets+ 3.77% 3.21% 3.35% 3.40% 3.61% Portfolio turnover rate 34% 21% 13% 7% 22% Net assets, end of period (in thousands) $ 804 $ 906 $ 769 $ 411 $ 10 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.90% 1.78% 1.94% 1.95% 1.88% Net investment income 3.59% 3.21% 3.17% 3.23% 3.41% Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.73% 1.76% 1.76% 1.78% 1.88% Net investment income 3.77% 3.21% 3.35% 3.40% 3.41% - ----------------------------------------------------------------------------------------------------------------------------------- (a) Effective August 2, 2004, PIM became the sub-advisor of the Fund and subsequently became the advisor on December 10, 2004. (b) Net investment income per share has been calculated using the average shares method. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + Ratios assuming no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 23 Financial Highlights (continued) - ----------------------------------------------------------------------------------------------------------------------------------- Year Year Year Year Year Ended Ended Ended Ended Ended 12/31/08 12/31/07 12/31/06 12/31/05 12/31/04 (a) - ----------------------------------------------------------------------------------------------------------------------------------- Class C Net asset value, beginning of period $ 12.08 $ 12.73 $ 12.76 $ 12.63 $ 12.66 - ----------------------------------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income $ 0.42 $ 0.37 $ 0.34 $ 0.35 $ 0.43(b) Net realized and unrealized gain (loss) on investments (2.47) (0.50) 0.21 0.34 0.13 - ----------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (2.05) $ (0.13) $ 0.55 $ 0.69 $ 0.56 Distributions to shareowners: Net investment income (0.44) (0.41) (0.43) (0.43) (0.43) Net realized gain (0.03) (0.11) (0.15) (0.13) (0.16) - ----------------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (2.52) $ (0.65) $ (0.03) $ 0.13 $ (0.03) - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 9.56 $ 12.08 $ 12.73 $ 12.76 $ 12.63 =================================================================================================================================== Total return* (17.45)% (1.07)% 4.39% 5.49% 4.54% Ratio of net expenses to average net assets+ 1.72% 1.68% 1.76% 1.56% 1.61% Ratio of net investment income to average net assets+ 3.78% 3.29% 3.31% 3.50% 3.47% Portfolio turnover rate 34% 21% 13% 7% 22% Net assets, end of period (in thousands) $ 8,563 $ 9,935 $ 6,935 $ 1,561 $ 10 Ratios with no waivers of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.73% 1.68% 1.76% 1.72% 2.06% Net investment income 3.76% 3.29% 3.31% 3.34% 3.02% Ratios with waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.72% 1.68% 1.76% 1.56% 1.61% Net investment income 3.78% 3.29%0 3.31% 3.50% 3.47% - ----------------------------------------------------------------------------------------------------------------------------------- * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + Ratios assuming no reduction for fees paid indirectly. (a) Effective August 2, 2004, PIM because the sub-advisor of the Fund and subsequently became the advisor on December 10, 2004. (b) Net investment income per share has been calculated using the average shares method. The accompanying notes are an integral part of these financial statements. 24 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Notes to Financial Statements | 12/31/08 1. Organization and Significant Accounting Policies Pioneer AMT-Free CA Municipal Fund (the Fund) is one of seven series of portfolios comprising Pioneer Series Trust II, a Delaware statutory trust registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The investment objective of the Fund is to seek as high a level of current interest income exempt from federal income tax and California state personal income tax as is consistent with the relative stability of capital. The Fund offers three classes of shares designated as Class A, Class B, and Class C shares. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Share classes have exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. Class B shares convert to Class A shares approximately eight years after the date of purchase. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses, and gain or loss on investments during the reporting period. Actual results could differ from those estimates. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectuses contain unaudited information regarding the Fund's principal risks. Please refer to those documents when considering the Fund's principal risks. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 25 Investing primarily in the securities issued by California and its municipalities makes the Fund more vulnerable to unfavorable developments in California than are funds that invest in municipal securities of many states. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements which are consistent with those policies generally accepted in the investment company industry: A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. Securities are valued at prices supplied by independent pricing services, which consider such factors as Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Securities for which there are no other readily available valuation methods are valued using fair value methods pursuant to procedures adopted by the Board of Trustees. At December 31, 2008 there were no securities that were valued using fair value methods. Discount and premium on debt securities are accreted or amortized, respectively daily into interest income on a yield-to-maturity basis with a corresponding increase or decrease in the cost basis of the security. Interest income is recorded on the accrual basis. Temporary cash investments are valued at cost which approximates market value. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. B. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal tax provision is required. Tax years for the prior three fiscal years remain subject to examination by tax authorities. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Fund's distributions may be shown in the accompanying financial statements as either from or in excess of net investment income or net realized gain on investment transactions, or from paid-in capital, depending on the type of book/tax differences that may exist. 26 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 The Fund has elected to defer $224,151 of capital losses recognized between November 1, 2008 and December 31, 2008 to its fiscal year ending December 31, 2009. At December 31, 2008, the Fund had a net capital loss carryforward of $332,580, which will expire in 2016 if not utilized. At December 31, 2008, the Fund has reclassified $9,136 to increase undistributed net investment income and $9,136 to decrease accumulated net realized loss on investments, to reflect permanent book/tax differences. The reclassification has no impact on the net assets of the Fund and presents the Fund's capital accounts on a tax basis. The tax character of distributions paid during the years ended December 31, 2008 and December 31, 2007 was as follows: - -------------------------------------------------------------------------------- 2008 2007 - -------------------------------------------------------------------------------- Distributions paid from: Ordinary income $ 122,096 $ 246,231 Tax-exempt income 4,509,010 4,146,481 Long-term capital gain 222,414 824,198 - -------------------------------------------------------------------------------- Total $4,853,520 $5,126,910 ================================================================================ The following shows the components of distributable earnings on a federal income tax basis at December 31, 2008: - -------------------------------------------------------------------------------- 2008 - -------------------------------------------------------------------------------- Distributable earnings: Undistributed tax-exempt income $ 56,757 Capital loss carryforward (332,580) Current year Post-October loss deferral (224,151) Unrealized depreciation (19,064,365) - -------------------------------------------------------------------------------- Total $(19,564,339) ================================================================================ The difference between book basis and tax-basis unrealized appreciation is attributable to the tax treatment of premium and amortization. C. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A., (UniCredit), earned $10,146 in underwriting commissions on the sale of Class A shares during the year ended December 31, 2008. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 27 D. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on the respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class B, Class C shares of the Fund, respectively (see Note 4). Shareowners of each class participate in all expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services, which are allocated based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). The Fund declares, as daily dividends, substantially all of its net investment income. All dividends are paid on a monthly basis. Short-term capital gain distributions, if any, may be declared with the daily dividends. Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner and at the same time, except that Class A, Class B, Class C shares can bear different transfer agent and distribution expense rates. 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at the annual rate of 0.50% of the Fund's average daily net assets up to $250 million; 0.45% of the next $500 million and 0.40% on assets over $750 million. Prior to January 1, 2008, management fees were calculated daily at the annual rate of 0.50% of the fund's average daily net assets up to $250 million. For the year ended December 31, 2008 the net management fee was equivalent to 0.50% of the average daily net assets. PIM has agreed to limit ordinary operating expenses to the extent required to reduce Fund expenses to 0.86%, 1.76% and 1.76% of the average daily net assets attributable to Class A, Class B and Class C shares, respectively. These expense limitations are in effect through May 1, 2012 for Class A shares and through May 1, 2010 for Class B and Class C Shares. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund. Included in "Due to Affiliates" reflected on the Statement of Assets and Liabilities is $1,133 in management fees, administrative costs and certain other services payable to PIM at December 31, 2008. 28 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimbursed PIMSS for out-of-pocket expenses related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended December 31, 2008, such out of pocket expenses by class of shares were as follows: - -------------------------------------------------------------------------------- Shareholder Communications: - -------------------------------------------------------------------------------- Class A $24,243 Class B 1,032 Class C 2,635 - -------------------------------------------------------------------------------- Total $27,910 ================================================================================ Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $6,516 in transfer agent fees and shareholder communications expense payable to PIMSS at December 31, 2008. 4. Distribution Plans The Fund adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A, Class B and Class C. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund pays PFD 1.00% of the average daily net assets attributable to Class B and Class C shares. The fee for Class B and Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class B and Class C shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $725 in distribution fees payable to PFD at December 31, 2008. In addition, redemptions of each class of shares may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within one year of purchase. Class B shares that are redeemed within six years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00% based on the lower of cost or market value of shares being redeemed. Proceeds from the CDSCs are paid to PFD. For the year ended December 31, 2008, CDSCs in the amount of $25,757 were paid to PFD. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 29 5. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS resulting in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended December 31, 2008, the Fund's expenses were reduced by $774 under such arrangements. 6. New Pronouncement In March 2008, Statement of Financial Accounting Standards No. 161, Disclosures about Derivative Instruments and Hedging Activities ("SFAS 161"), was issued and is effective for fiscal years beginning after November 15, 2008. SFAS 161 requires enhanced disclosures about an entity's derivative and hedging activities. Management is currently evaluating the impact the adoption of SFAS 161 will have on the Fund's financial statement disclosures. 30 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust II and Shareowners of Pioneer AMT-Free CA Municipal Fund: - -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer AMT-Free CA Municipal Fund, one of the series comprising the Pioneer Series Trust II (the "Trust"), including the schedule of investments, as of December 31, 2008, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended. These financial statements and financial highlights are the responsibility of the Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Trust's internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of December 31, 2008, by correspondence with the custodian and brokers. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer AMT-Free CA Municipal Fund of the Pioneer Series Trust II at December 31, 2008, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and financial highlights for each of the five years in the period then ended, in conformity with U.S. generally accepted accounting principles. /s/ Ernst & Young LLP Boston, Massachusetts February 18, 2009 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 31 ADDITIONAL INFORMATION (unaudited) For the year ended December 31, 2008, certain dividends paid by the Fund may be subject to a maximum tax rate of 15%, as provided for by the Jobs and Growth Tax Relief Reconciliation Act (the Act) of 2003. The Fund intends to designate up to the maximum amount of such dividends allowable under the Act, as taxed at a maximum rate of 15%. Complete information will be computed and reported in conjunction with your 2008 form 1099-DIV. The percentages of the Fund's ordinary income distributions that are exempt from nonresident alien (NRA) tax withholding resulting from qualified interest income and qualified short term gains were 100.0% and 0.0%, respectively. 32 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Ernst & Young LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at www.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. Trustees and Officers The Board of Trustees provides broad supervision over the Fund's affairs. The officers of the Fund are responsible for the Fund's operations. The Trustees and officers are listed below, together with their principal occupations during the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a trustee of each of the 76 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 33 Interested Trustees - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Years Held by this Trustee - ------------------------------------------------------------------------------------------------------------------------------------ John F. Cogan, Jr. Chairman of the Trustee since 2003. Deputy Chairman and a Director of None (82)* Board, Trustee Serves until a successor Pioneer Global Asset Management S.p.A. and President trustee is elected or ("PGAM"); Non-Executive Chairman and a earlier retirement or Director of Pioneer Investment removal. Management USA Inc. ("PIM-USA"); Chairman and a Director of Pioneer; Chairman and Director of Pioneer Institutional Asset Management, Inc. (since 2006); Director of Pioneer Alternative Investment Management Limited (Dublin); President and a Director of Pioneer Alternative Invest- ment Management (Bermuda) Limited and affiliated funds; Director of PIOGLOBAL Real Estate Investment Fund (Russia) (until June 2006); Director of Nano-C, Inc. (since 2003); Director of Cole Management Inc. (since 2004); Director of Fiduciary Counseling, Inc.; President and Director of Pioneer Funds Dis- tributor, Inc. ("PFD") (until May 2006); President of all of the Pioneer Funds; and Of Counsel, Wilmer Cutler Pickering Hale and Dorr LLP - ------------------------------------------------------------------------------------------------------------------------------------ Daniel K. Kingsbury Trustee and Trustee since 2008. Director, CEO and President of Pioneer None (50)* Executive Serves until a successor Investment Management USA Inc. (since Vice President trustee is elected or February 2007); Director and President earlier retirement or of Pioneer Investment Management, Inc. removal. and Pioneer Institutional Asset Management, Inc. (since February 2007); Executive Vice President of all of the Pioneer Funds (since March 2007); Direc- tor of Pioneer Global Asset Management S.p.A. (since April 2007); Head of New Markets Division, Pioneer Global Asset Management S.p.A. (2000 - 2007) - ------------------------------------------------------------------------------------------------------------------------------------ * Mr. Cogan and Mr. Kingsbury are Interested Trustees because they are officers or directors of the fund's investment adviser and certain of its affiliates. 34 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Independent Trustees - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Years Held by this Trustee - ------------------------------------------------------------------------------------------------------------------------------------ David R. Bock (65) Trustee Trustee since 2005. Executive Vice President and Chief Director of Serves until a successor Financial Officer, I-trax, Inc. Enterprise Com- trustee is elected or (publicly traded health care services munity Investment, earlier retirement or company) (2004 - 2007); Partner, Federal Inc. (privately-held removal. City Capital Advisors (boutique merchant affordable housing bank) (1997 to 2004 and 2008 - present); finance company); and Executive Vice President and Chief and Director of New Financial Officer, Pedestal Inc. York Mortgage Trust (internet-based mortgage trading (publicly traded company) (2000 - 2002) mortgage REIT) - ------------------------------------------------------------------------------------------------------------------------------------ Mary K. Bush (60) Trustee Trustee since 2003. President, Bush International, LLC Director of Marriott Serves until a successor (international financial advisory International, trustee is elected or firm) Inc., Director of earlier retirement or Discover Financial removal. Services (credit card issuer and electronic payment services); Director of Briggs & Stratton Co. (engine manufacturer); Director of UAL Corporation (airline holding company) Director of Mantech International Corporation (national security, defense, and intel- ligence technology firm); and Member, Board of Gov- ernors, Investment Company Institute - ------------------------------------------------------------------------------------------------------------------------------------ Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 35 Independent Trustees (continued) - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Years Held by this Trustee - ------------------------------------------------------------------------------------------------------------------------------------ Benjamin M. Friedman Trustee Trustee since 2008. Professor, Harvard University Trustee, Mellon (64) Serves until a successor Institutional Funds trustee is elected or Investment Trust and earlier retirement or Mellon Institutional removal Funds Master Portfolio (oversees 17 portfolios in fund complex) - ------------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Graham Trustee Trustee since 2003. Founding Director, Vice-President and None (61) Serves until a successor Corporate Secretary, The Winthrop Group, trustee is elected or Inc. (consulting firm); and Desautels earlier retirement or Faculty of Management, McGill University removal. - ------------------------------------------------------------------------------------------------------------------------------------ Thomas J. Perna (58) Trustee Trustee since 2006. Chief Executive Officer, Quadriserv, None Serves until a successor Inc. (2008 - present) (technology trustee is elected or products for securities lending earlier retirement or industry); Private investor (2004 - removal. 2008); and Senior Executive Vice President, The Bank of New York (financial and securities services) (1986 - 2004) - ------------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret Trustee Trustee since 2003. President and Chief Executive Officer, Director of New (60) Serves until a successor Newbury, Piret & Company, Inc. America High Income trustee is elected or (investment banking firm) Fund, Inc. earlier retirement or (closed-end removal. investment company) - ------------------------------------------------------------------------------------------------------------------------------------ Stephen K. West (80) Trustee Trustee since 2008. Senior Counsel, Sullivan & Cromwell LLP Director, The Swiss Serves until a successor (law firm) Helvetia Fund, Inc. trustee is elected or (closed-end earlier retirement or investment company) removal. - ------------------------------------------------------------------------------------------------------------------------------------ 36 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 Fund Officers - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Years Held by this Officer - ------------------------------------------------------------------------------------------------------------------------------------ Dorothy E. Bourassa Secretary Since 2003. Serves at Secretary of PIM-USA; Senior Vice None (60) the discretion of the President - Legal of Pioneer; Board Secretary/Clerk of most of PIM-USA's subsidiaries; and Secretary of all of the Pioneer Funds since September 2003 (Assistant Secretary from November 2000 to September 2003) - ------------------------------------------------------------------------------------------------------------------------------------ Christopher J. Assistant Since 2003. Serves at Associate General Counsel of Pioneer None Kelley (44) Secretary the discretion of the since January 2008 and Assistant Board Secretary of all of the Pioneer Funds since September 2003; Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 - ------------------------------------------------------------------------------------------------------------------------------------ Mark E. Bradley (49) Treasurer Since 2008. Serves at Vice President - Fund Accounting, None the discretion of the Administration and Controller- ship Board Services of Pioneer; and Treasurer of all of the Pioneer Funds since March 2008; Deputy Treasurer of Pioneer from March 2004 to February 2008; Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008; and Treasurer and Senior Vice President, CDC IXIS Asset Management Services from 2002 to 2003 - ------------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti Assistant Since 2003. Serves at Assistant Vice President - Fund None (43) Treasurer the discretion of the Accounting, Administration and Board Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan (50) Assistant Since 2003. Serves at Fund Accounting Manager - Fund None Treasurer the discretion of the Accounting, Administration and Board Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------------ Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 37 Fund Officers (continued) - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Years Held by this Officer - ------------------------------------------------------------------------------------------------------------------------------------ Katherine Kim Assistant Since 2003. Serves at Fund Administration Manager - Fund None Sullivan (35) Treasurer the discretion of the Accounting, Administration and Board Controllership Services since June 2003 and Assistant Treasurer of all of the Pioneer Funds since September 2003; Assistant Vice President - Mutual Fund Operations of State Street Corporation from June 2002 to June 2003 (formerly Deutsche Bank Asset Management) - ------------------------------------------------------------------------------------------------------------------------------------ Teri W. Anderholm Chief Compliance Since 2007. Serves at Chief Compliance Officer of Pioneer None (49) Officer the discretion of the since December 2006 and of all the Board Pioneer Funds since January 2007; Vice President and Compliance Officer, MFS Investment Management (August 2005 to December 2006); Consultant, Fidelity Investments (February 2005 to July 2005); Independent Consultant (July 1997 to February 2005) - ------------------------------------------------------------------------------------------------------------------------------------ 38 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 This page for your notes. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 39 This page for your notes. 40 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 This page for your notes. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 41 This page for your notes. 42 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 This page for your notes. Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 43 This page for your notes. 44 Pioneer AMT-Free CA Municipal Fund | Annual Report | 12/31/08 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: - -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Telecommunications Device for the Deaf (TDD) 1-800-225-1997 Write to us: - -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: www.pioneerinvestments.com This report must be accompanied by a prospectus. The Fund files a complete statement of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. [GRAPHIC] Pioneer AMT-Free Municipal Fund - -------------------------------------------------------------------------------- Annual Report | December 31, 2008 - -------------------------------------------------------------------------------- Ticker Symbols: Class A PBMFX Class B PBMUX Class C MNBCX Class Y PBYMX [LOGO] PIONEER Investments(R) visit us: pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 10 Comparing Ongoing Fund Expenses 14 Schedule of Investments 16 Financial Statements 22 Notes to Financial Statements 30 Report of Independent Registered Public Accounting Firm 35 Trustees, Officers and Service Providers 37 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 1 President's Letter Dear Shareowner, Stock and bond markets around the globe this year have experienced one of their most tumultuous periods in history. Investors have witnessed volatility of a magnitude that many have never before seen. Distance often provides the best vantage point for perspective. Still, we believe that the benefits of basic investment principles that have stood the test of time -- even in the midst of market turmoil -- cannot be underestimated. First, invest for the long term. The founder of Pioneer Investments, Philip L. Carret, began his investment career during the 1920s. One lesson he learned is that while great prosperity affords an advantageous time for selling stocks, extreme economic slumps can create opportunities for purchase. Indeed, many of our portfolio managers, who follow the value-conscious investing approach of our founder, are looking at recent market conditions as an opportunity to buy companies whose shares we believe have been unjustifiably beaten down by indiscriminate selling, but that we have identified as having strong prospects over time. While investors may be facing a sustained market downturn, we continue to believe that patience, along with staying invested in the market, are important considerations for long-term investors. A second principle is to stay diversified across different types of investments. The global scope of the current market weakness poses challenges for this basic investment axiom. But the turbulence makes now a good time to reassess your portfolio and make sure that your investments continue to meet your needs. We believe you should work closely with your financial advisor to find the mix of stocks, bonds and money market assets that is best aligned to your particular risk tolerance and investment objective. As the investment markets sort through the continuing crisis in the financial industry, we are staying focused on the fundamentals and risk management. With more than 80 years of experience behind us, we have learned how to navigate turbulent markets. At Pioneer Investments, risk management has always been a critical part of our culture--not just during periods of extraordinary volatility. Our investment process is based on fundamental research, quantitative analysis and active portfolio management. This three-pillared process, which we apply to each of our portfolios, is supported by an integrated team approach and is designed to carefully balance risk and reward. While we 2 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 see potential chances for making money in many corners of the market, it takes research and experience to separate solid investment opportunities from speculation. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at www.pioneerinvestments.com. Thank you for investing with Pioneer. Respectfully, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 3 Portfolio Management Discussion | 12/31/08 In the following interview, Portfolio Manager Stephen C. Bauer outlines the investment environment for tax-free bonds during the Fund's most recent fiscal year ended December 31, 2008, the Fund's performance, his investment strategy and his outlook. Q How did the Fund perform during its most recent fiscal year ended December 31, 2008? A For the 12 months ended December 31, 2008, Pioneer AMT-Free Municipal Fund's Class A shares produced a -14.85% return at net asset value. The Fund's benchmark, the Barclays Capital Municipal Bond Index, returned -2.47% over the same 12-month period, and the average return of the 228 funds in Lipper's General Municipal Debt Funds category was -9.09%. Lipper Analytical Services is an independent monitor of mutual fund performance. Q How would you describe the investing environment for tax-exempt bonds during the 12 months ended December 31, 2008? A The year 2008 represented one of the most unusual and volatile periods ever witnessed in the municipal bond market. Early in the year, severe financial difficulties related to the housing crisis caused the three largest "monoline" insurers -- FGIC, MBIA and AMBAC -- to lose their AAA ratings. The loss of AAA status for the three monolines meant that the underlying credits for a host of insured municipal bonds had to be painstakingly re-evaluated by market watchers (which sparked significant price volatility). Another market disruption in the first months of 2008 came from the activities of hedge fund managers, who in the past had profited by borrowing large amounts at low short-term rates and investing the proceeds in higher-yielding long-term municipal bonds. However, in mid to late February, many hedge fund managers were forced to sell billions of dollars of long-term municipal bonds to meet margin calls. The huge selloff temporarily seized up the municipal market until some private sale arrangements of hedge fund holdings ignited a municipal rally that lasted into the middle of May. In the fall of 2008, with the collapse of Lehman Brothers and the Federal government's rescues of AIG, Fannie Mae, Freddie Mac and other prominent financial institutions, the credit crisis mushroomed, and the municipal market's reasonably sound fundamental characteristics were ignored by investors, replaced by intense anxiety over the health of the U.S. financial system. Lehman Brothers' disappearance made banks and brokers barely 4 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 willing to lend or trade to an extent that we have rarely witnessed. The freeze-up in the municipal bond market began in October 2008 and peaked in early December. Even high-quality tax-free bonds were trading at steep discounts during this time, as the credit markets engaged in a frenzied "flight to quality" to U.S. Treasury and agency securities. Finally, in early December 2008, with municipal issuance at a standstill, selling pressure from hedge funds abating and municipal/Treasury yield ratios at unprecedented levels (long-term Treasuries yielding 2.50% and AAA-rated municipals of the same maturity yielding 5.50% to 6.00%), investors began to snap up tax-exempt bonds at attractive yields, and the municipal market improved over the final three weeks of 2008. Again, in my view, fundamental factors such as issuing municipalities' ability to raise taxes or cut spending in order to balance budgets, did not support such a high municipal yield premium over Treasuries. This circumstance spurred bargain hunting among investors seeking to lock in high yields. Q What was your investment strategy for the Fund during the 12-month period ended December 31, 2008? A As always, our principal investment strategy for the Fund was to purchase and hold discounted long-term bonds, as those investments offer the highest yields in the municipal marketplace. We also believe that they offer the most attractive value over time. In the first half of the 12-month period ended December 31, 2008, we purchased bonds with yield "spreads" over AAA bonds that were double or triple what they had been in recent years. The new purchases included hospital bonds in California (Statewide Communities Development Authority for Sutter Hospital, and St. Joseph Hospital), as well as Providence Hospital bonds from Washington State. Also, the Fund was invested in 'gas prepay' bonds, most recently from the Public Authority for Colorado Energy. The bonds are engineered by Wall Street firms through arrangements with municipalities that sell natural gas directly to their residents, rather than through a utility. In order to lock in a stable and typically lower-than-market price (rather than municipalities being forced to change natural gas rates for consumers based on fluctuating commodity prices), through this arrangement, natural gas is purchased via a long-term contract in the futures market. Proceeds from the initial bond offering pay for the futures transaction, and principal and interest are later paid to bondholders through the municipalities' natural gas sales to consumers. The underwriter of the issue is its financial guarantor. In the second half of 2008, with the municipal market nearly locked down for an extended period, we pursued a cautious strategy for the Fund, maintaining a significant cash position for liquidity purposes. The Fund was able Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 5 to purchase California Statewide Community Development Authority Children's Hospital Los Angeles bonds during the second half of the annual reporting period at an attractive yield. As of December 31, 2008, 20% of the Fund's portfolio was rated AAA or the equivalent. In addition, the Fund is broadly diversified among 24 states and the District of Columbia. Q What were the largest contributors to and detractors from Fund performance in 2008? A In a difficult market, municipal bond interest rate spreads (or differences in yield) between long- and short-term issues widened dramatically, negatively affecting the bond prices of longer-term issues, which make up most of the Fund's portfolio. The Fund's average maturity is significantly longer than that of the Barclays Capital Municipal Bond Index, which means that it will generally underperform the benchmark when long-term interest rates are rising (such as through much of 2008) and outperform when those rates are declining. Of course, over the long term, we believe the Fund's shareholders should benefit from the higher yields of the long-term bonds held in the Fund's portfolio. The largest individual detractor from performance came from Main Street Natural Gas bonds, which defaulted due to the bankruptcy of Lehman Brothers, which was responsible for the forward gas contract. It is currently undetermined what bondholders may recover upon the ultimate distribution of assets resulting from the liquidation, but the bonds have recently traded between $19 and $22. Short-term issues in the form of pre-refunded municipal bonds were the strongest contributors to performance. Two examples were Grand Forks (North Dakota) and New York Metropolitan Transit Authority municipals, both pre-refunded to shorter call dates. Q What is your outlook going forward? A Statistical reports regarding the state of the U.S. economy in late 2008 and early 2009 continued to be dismal, and the economic situation could deteriorate further. President Obama and Congress will need to act quickly on spending programs to revive the economy. State and local governments are facing their most difficult budgetary conditions in more than 50 years, but municipal bond defaults have remained at a very low level. We are confident that in most cases municipal government officials' experience in dealing with trying economic circumstances will see states and cities through the crisis. In terms of market volatility, the hope would be that in 2009 market behavior will be based more on fundamental factors, and less on fears about the health of financial firms and supply/ demand imbalances. The Fund will continue to hold long-term issues that we think have the best chance to perform well, and we will seek to avoid 6 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 those that might encounter significant budgetary problems. We also will seek to lock in attractive yields for the Fund from high-quality tax-free bonds, as we believe there are many promising opportunities in the market. We believe that Pioneer AMT-Free Municipal Fund continues to be an option for suitable investors seeking high income free from federal taxes. Please refer to the Schedule of Investments on pages 16-21 for a full listing of Fund securities. When interest rates rise, the prices of fixed-income securities in the fund will generally fall. Conversely, when interest rates fall, the prices of fixed-income securities in the Fund will generally rise. Investments in the Fund are subject to possible loss due to the financial failure of issuers of underlying securities and their inability to meet their debt obligations. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. Past performance is not guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of fund management as of the date of this report. These opinions should not be relied upon for any other purposes. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 7 Portfolio Summary | 12/31/08 Portfolio Quality - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE DATA IS A REPRESENTATION OF A PIE CHART IN THE PRINTED MATERIAL] AAA 24.8% AA 36.2% A 18.5% BBB 13.4% BB & Lower 5.3% Commercial Paper 1.8% Sector Distribution - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE DATA IS A REPRESENTATION OF A PIE CHART IN THE PRINTED MATERIAL] Insured 39.4% Health 16.0% Escrowed 8.6% Power 7.7% Various Revenues 7.4% Housing 5.7% Water & Sewer 5.2% Transportation 3.9% Education 3.0% Reserves 1.8% General Obligation 1.3% 10 Largest Holdings* - -------------------------------------------------------------------------------- (As a percentage of total long-term holdings) 1. Massachusetts State Housing Finance Agency, 5.4%, 12/1/28 4.33% - -------------------------------------------------------------------------------- 2. San Joaquin Hills Transportation Corridor Agency, 5.0%, 1/1/33 4.00 - -------------------------------------------------------------------------------- 3. Piedmont Municipal Power Agency, 5.25%, 1/1/21 3.65 - -------------------------------------------------------------------------------- 4. Indianapolis State Development Finance Authority, 5.6%, 12/1/32 3.34 - -------------------------------------------------------------------------------- 5. Dallas County Texas Utilities & Reclamamation, 5.375%, 2/15/29 3.16 - -------------------------------------------------------------------------------- 6. California State, 4.25%, 8/1/33 3.08 - -------------------------------------------------------------------------------- 7. Illinois Educational Facilities Authority, 6.25%, 5/1/30 3.02 - -------------------------------------------------------------------------------- 8. North Carolina Eastern Municipal Power, 6.0%, 1/1/22 2.96 - -------------------------------------------------------------------------------- 9. Public Authority For Colorado Energy, 6.5%, 11/15/38 2.56 - -------------------------------------------------------------------------------- 10. King County Washington Housing Authority, 5.5%, 5/1/38 2.54 - -------------------------------------------------------------------------------- * This list excludes temporary cash and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 8 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Prices and Distributions | 12/31/08 Net Asset Value per Share - -------------------------------------------------------------------------------- Class 12/31/08 12/31/07 A $ 10.90 $ 13.50 - -------------------------------------------------------------------------------- B $ 10.83 $ 13.41 - -------------------------------------------------------------------------------- C $ 10.83 $ 13.42 - -------------------------------------------------------------------------------- Y $ 10.89 $ 13.48 - -------------------------------------------------------------------------------- Distributions per Share: 1/1/08-12/31/08 - -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains A $ 0.5910 $ -- $ 0.0654 - -------------------------------------------------------------------------------- B $ 0.4739 $ -- $ 0.0654 - -------------------------------------------------------------------------------- C $ 0.4880 $ -- $ 0.0654 - -------------------------------------------------------------------------------- Y $ 0.6254 $ -- $ 0.0654 - -------------------------------------------------------------------------------- Index Definitions - -------------------------------------------------------------------------------- The Barclays Capital Municipal Bond Index is a broad measure of the municipal bond market. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. You cannot invest directly in an index. The index defined here pertains to the "Value of $10,000 Investment" charts shown on pages 10-13. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 9 Performance Update | 12/31/08 Class A Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AMT-Free Municipal Fund at public offering price, compared to that of the Barclays Capital Municipal Bond Index. Average Annual Total Returns (As of December 31, 2008) - ----------------------------------------------------------------- Net Asset Public Offering Period Value (NAV) Price (POP) - ----------------------------------------------------------------- Life-of-Class (9/30/1996) 3.67% 3.19% 10 Years 2.67 2.09 5 Years 0.08 -0.84 1 Year -14.85 -18.71 Expense Ratio (Per prospectus dated May 1, 2008) - ----------------------------------------------------------------- Gross Net - ----------------------------------------------------------------- 0.85% 0.82% - ----------------------------------------------------------------- [THE DATA IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer AMT-Free Barclay's Capital Municipal Fund Municipal Bond Index 12/98 9,550 10,000 8,838 9,794 12/00 10,053 10,939 10,546 11,499 12/02 11,598 12,604 12,255 13,274 12/04 12,923 13,868 13,543 14,356 12/06 14,248 15,051 14,447 15,557 12/08 12,302 15,172 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 4.5% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. Pioneer AMT-Free Municipal Fund was created through the reorganization of predecessor Safeco Municipal Bond Fund on December 10, 2004. If all the expenses of the Fund were reflected, the performance would be lower. The performance of Class A shares of the Fund includes the performance of the predecessor fund's Class A shares, which has been restated to reflect differences in any applicable sales charges (but not differences in expenses). The net expense ratio reflects contractual expense limitation currently in effect through 5/1/12 for Class A Shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 10 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Class B Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AMT-Free Municipal Fund, compared to that of the Barclays Capital Municipal Bond Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ----------------------------------------------------------------- Life-of-Class (9/30/1996) 2.87% 2.87% 10 Years 1.86 1.86 5 Years -0.76 -0.76 1 Year -15.60 -18.83 Expense Ratio (Per prospectus dated May 1, 2008) - ----------------------------------------------------------------- Gross Net - ----------------------------------------------------------------- 1.78% 1.72% - ----------------------------------------------------------------- [THE DATA IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer AMT-Free Barclay's Capital Municipal Fund Municipal Bond Index 12/98 10,000 10,000 9,284 9,794 12/00 10,478 10,939 10,912 11,499 12/02 11,900 12,604 12,488 13,274 12/04 13,060 13,868 13,583 14,356 12/06 14,175 15,051 14,240 15,557 12/08 12,019 15,172 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). Class B shares reflect the deduction of the maximum applicable contingent deferred sales charge (CDSC). The maximum CDSC is 4.0% and declines over five years. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. Pioneer AMT-Free Municipal Fund was created through the reorganization of predecessor Safeco Municipal Bond Fund on December 10, 2004. If all the expenses of the Fund were reflected, the performance would be lower. The performance of Class B shares of the Fund includes the performance of the predecessor fund's Class B shares, which has been restated to reflect differences in any applicable sales charges (but not differences in expenses). The net expense ratio reflects contractual expense limitation currently in effect through 5/1/10 for Class B Shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 11 Performance Update | 12/31/08 Class C Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AMT-Free Municipal Fund, compared to that of the Barclays Capital Municipal Bond Index. Average Annual Total Returns (As of December 31, 2008) - ------------------------------------------------------------------- If If Period Held Redeemed - ------------------------------------------------------------------- Life-of-Class (10/1/2003) -0.44% -0.44% 5 Years -0.75 -0.75 1 Year -15.56 -15.56 Expense Ratio (Per prospectus dated May 1, 2008) - ------------------------------------------------------------------- Gross Net - ------------------------------------------------------------------- 1.58% 1.58% - ------------------------------------------------------------------- [THE DATA IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer AMT-Free Barclay's Capital Municipal Fund Municipal Bond Index 10/03 10,000 10,000 12/03 10,210 10,188 12/04 10,663 10,644 12/05 11,065 11,018 12/06 11,566 11,552 12/07 11,643 11,940 12/08 9,831 11,645 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). The performance of Class C shares does not reflect the 1% front-end sales charge in effect prior to February 1, 2004. If you paid a 1% sales charge, your returns would be lower than those shown above. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. Pioneer AMT-Free Municipal Fund was created through the reorganization of predecessor Safeco Municipal Bond Fund on December 10, 2004. If all the expenses of the Pioneer fund were reflected, the performance would be lower. The performance of Class C shares of the Fund includes the performance of the predecessor fund's Class C shares, which has been restated to reflect differences in any applicable sales charges (but not differences in expenses). The net expense ratio reflects contractual expense limitation currently in effect through 5/1/10 for Class C Shares. There can be no assurance that Pioneer will extend the expense limitation beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Class Y Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer AMT-Free Municipal Fund, compared to that of the Barclays Capital Municipal Bond Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- Life-of-Class (9/30/1996) 3.72% 3.72% 10 Years 2.74 2.74 5 Years 0.21 0.21 1 Year -14.56 -14.56 Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 0.54% 0.54% - ---------------------------------------------------------------- [THE DATA IS A REPRESENTATION OF A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer AMT-Free Barclay's Capital Municipal Fund Municipal Bond Index 12/98 10,000 10,000 9,351 9,794 12/00 10,637 10,939 11,160 11,499 12/09 12,273 12,604 12,967 13,274 12/09 13,674 13,868 14,331 14,356 12/09 15,082 15,051 15,334 15,557 12/09 13,101 15,172 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Performance for periods prior to the inception of Class Y shares on November 10, 2006, reflects the NAV performance of the Fund's Class A shares. The performance does not reflect differences in expenses, including the Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares are generally higher than those of Class Y shares, the performance shown for Class Y shares prior to its inception would have been higher. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. Pioneer AMT-Free Municipal Fund was created through the reorganization of predecessor Safeco Municipal Bond Fund on December 10, 2004. The performance of Class Y shares of the Fund includes the net asset value performance of the predecessor fund's Class A shares prior to the reorganization, which has not been restated to reflect differences in expenses, including 12b-1 fees applicable to Class A shares. If all the expenses of the Pioneer Fund were reflected, the performance would be lower. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 13 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables - -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer AMT-Free Municipal Fund Based on actual returns from July 1, 2008 through December 31, 2008. - --------------------------------------------------------------------------------------- Share Class A B C Y - --------------------------------------------------------------------------------------- Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - --------------------------------------------------------------------------------------- Ending Account $ 858.37 $ 854.37 $ 855.26 $ 859.99 Value on 12/31/08 - --------------------------------------------------------------------------------------- Expenses Paid $ 3.83 $ 8.02 $ 7.69 $ 2.71 During Period* - --------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 0.82%, 1.72%, 1.65% and 0.58%, for Class A, Class B, Class C, and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). 14 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. 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 the 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 tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below 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 transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer AMT-Free Municipal Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from July 1, 2008 through December 31, 2008. - --------------------------------------------------------------------------------------- Share Class A B C Y - --------------------------------------------------------------------------------------- Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - --------------------------------------------------------------------------------------- Ending Account $ 1,021.01 $ 1,016.49 $ 1,016.84 $ 1,022.22 Value on 12/31/08 - --------------------------------------------------------------------------------------- Expenses Paid $ 4.17 $ 8.72 $ 8.36 $ 2.95 During Period* - --------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 0.82%, 1.72%, 1.65%, and 0.58%, for Class A, Class B, Class C, and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 15 Schedule of Investments | 12/31/08 - --------------------------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value - --------------------------------------------------------------------------------------------------- MUNICIPAL BONDS -- 96.4% Alabama -- 1.6% $ 5,000,000 A/Baa1 Alabama Drinking Water Finance Authority, 4.0%, 8/15/28 $ 3,735,900 3,000,000 A+/A3 Birmingham Alabama Waterworks & Sewer, 4.375%, 1/1/32 2,367,120 ------------ $ 6,103,020 - --------------------------------------------------------------------------------------------------- Arizona -- 4.9% 6,300,000 AA-/A1 Arizona Board Regents Certificates Partnerships, 4.0%, 6/1/31 $ 4,883,319 10,000,000 AA-/NR Arizona Health Facilities Authority Revenue, 5.5%, 1/1/38 8,352,200 7,155,000 AA/Aa3 Maricopa County Arizona High School District, 3.5%, 7/1/25 5,912,749 ------------ $ 19,148,268 - --------------------------------------------------------------------------------------------------- California -- 18.4% 2,000,000 BBB-/Baa2 California Municipal Finance Agency, 5.25%, 2/1/37 $ 1,256,360 9,325,000 AA-/Aa2 California State Department of Veteran Affairs, 4.75%, 12/1/25 8,335,524 16,000,000 A+/A1 California State, 4.25%, 8/1/33 11,641,120 6,000,000 AA-/Aa3 California Statewide, 5.75%, 7/1/47 5,180,100 11,955,000 BBB+/Baa1 California Statewide Communities Development Authority, 5.0%, 8/15/47 6,248,879 7,500,000 AA-/Aa3 California Statewide Community, 5.25%, 11/15/48 5,950,800 3,000,000 AA/NR Los Angeles County Sanitation Districts Financing Authority Revenue, 4.5%, 10/1/35 2,242,200 1,680,000 AA/Baa1 Madera California Public, 4.375%, 3/1/31 1,339,380 7,000,000 AAA/Aaa Pittsburg California Redevelopment Agency, 6.5%, 9/1/28 6,599,880 25,000,000 BB-/Ba2 San Joaquin Hills Transportation Corridor Agency, 5.0%, 1/1/33 15,149,250 10,865,000 AA/A3 San Jose California Redevelopment Agency Tax, 4.9%, 8/1/33 7,856,807 ------------ $ 71,800,300 - --------------------------------------------------------------------------------------------------- Colorado -- 5.6% 6,555,000 A-/A3 Colorado Springs Colorado Hospital Revenue, 6.375%, 12/15/30 $ 5,647,591 8,220,000 AAA/Aa3 Colorado Water & Power Development Authority, 4.375%, 8/1/35 6,651,295 12,500,000 A/A2 Public Authority For Colorado Energy, 6.5%, 11/15/38 9,703,625 ------------ $ 22,002,511 - --------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 16 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 - ---------------------------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value - ---------------------------------------------------------------------------------------------------- District of Columbia -- 1.8% $ 2,000,000 A-/A3 District of Columbia, 5.5%, 4/1/36 $ 1,861,360 8,000,000 NR/A2 District of Columbia, 4.25%, 6/1/37 5,099,600 ------------ $ 6,960,960 - ---------------------------------------------------------------------------------------------------- Florida -- 4.2% 2,000,000 A-/A2 Brevard County Florida Health, 5.0%, 4/1/34 $ 1,207,100 8,000,000 AA/Aa1 Escambia County Florida Health Facilities, 5.25%, 11/15/32 7,049,920 1,000,000 AA+/NR Florida State Department Children and Families Certificates, 5.0%, 10/1/25 937,630 1,000,000 NR/A3 Hillsborough County Florida, 5.25%, 10/1/24 756,050 7,500,000 NR/Baa2 Tallahassee Florida Health, 6.375%, 12/1/30 5,835,075 1,000,000 AA/Baa1 Village Center Community Development Florida, 5.0%, 11/1/32 768,010 ------------ $ 16,553,785 - ---------------------------------------------------------------------------------------------------- Georgia -- 1.2% 5,000,000 A/A2 Main Street Natural Gas, Inc., Georgia, 5.5%, 9/15/28 $ 3,547,250 10,000,000 D/Caa3 Main Street Natural Gas, Inc., Georgia, 6.375%, 7/15/38 1,275,200 ------------ $ 4,822,450 - ---------------------------------------------------------------------------------------------------- Illinois -- 6.9% 10,000,000 NR/#Aaa Illinois Educational Facilities Authority, 6.25%, 5/1/30 $ 11,439,700 10,000,000 AAA/A1 Metropolitan Pier & Expo, 5.25%, 6/15/42 9,553,100 5,000,000 AAA/#Aaa Metropolitan Pier & Expo, 7.0%, 7/1/26 6,242,800 ------------ $ 27,235,600 - ---------------------------------------------------------------------------------------------------- Indiana -- 4.6% 5,000,000 A+/A2 Indiana Health & Educational Facilities Authority, 4.75%, 2/15/34 $ 3,094,650 19,000,000 BBB+/Baa1 Indianapolis State Development Finance Authority, 5.6%, 12/1/32 12,627,400 2,500,000 AA/Baa1 St. Joseph County Indiana Authority, 4.5%, 8/15/18 2,376,500 ------------ $ 18,098,550 - ---------------------------------------------------------------------------------------------------- Kentucky -- 0.1% 435,000 NR/Baa1 Kentucky Economic Development Finance, 6.625%, 10/1/28 $ 367,719 ------------ $ 367,719 - ---------------------------------------------------------------------------------------------------- Louisiana -- 1.0% 5,000,000 AA/Aa3 Louisiana State Gas & Fuels Tax, 4.5%, 5/1/41 $ 3,985,750 ------------ $ 3,985,750 - ---------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 17 Schedule of Investments | 12/31/08 (continued) - ---------------------------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value - ---------------------------------------------------------------------------------------------------- Massachusetts -- 6.5% $ 20,000,000 AA/Baa1 Massachusetts State Housing Finance Agency, 5.4%, 12/1/28 $ 16,366,600 5,000,000 AA/Aa2 Massachusetts State Water Authority, 4.0%, 8/1/46 3,585,100 7,330,000 AAA/Aaa Massachusetts Water Pollution Abatement Revenue, 3.5%, 8/1/26 5,738,657 ------------ $ 25,690,357 - ---------------------------------------------------------------------------------------------------- Maryland -- 1.9% 3,400,000 AA/A1 Baltimore Maryland Project Revenue, 5.0%, 7/1/24 $ 3,591,692 1,865,000 AA/A1 Baltimore Maryland Project Revenue, 5.0%, 7/1/24 1,859,032 1,000,000 NR/Baa2 Maryland State Economic Development, 5.8%, 6/1/38 677,730 2,000,000 NR/Baa2 Maryland State Economic Development, 5.875%, 6/1/43 1,344,920 ------------ $ 7,473,374 - ---------------------------------------------------------------------------------------------------- Michigan -- 1.2% 5,000,000 AA/Aa1 Michigan State Hospital Finance Authority, 5.5%, 11/15 $ 4,628,050 ------------ $ 4,628,050 - ---------------------------------------------------------------------------------------------------- Montana -- 0.5% 2,785,000 A/Baa1 Forsyth Montana Pollution Control Revenue, 5.0%, 3/1/31 $ 1,986,513 ------------ $ 1,986,513 - ---------------------------------------------------------------------------------------------------- North Carolina -- 2.9% 12,000,000 BBB+/Baa1 North Carolina Eastern Municipal Power, 6.0%, 1/1/22 $ 11,199,720 ------------ $ 11,199,720 - ---------------------------------------------------------------------------------------------------- North Dakota -- 0.8% 3,000,000 NR/Baa2 Grand Forks North Dakota Health Care Systems, 7.125%, 8/15/24 $ 3,298,950 ------------ $ 3,298,950 - ---------------------------------------------------------------------------------------------------- New York -- 5.8% 3,820,000 AAA/A1 Metropolitan Transportation Authority New York, 4.75%, 4/1/28 $ 4,405,797 10,000,000 AAA/Aa2 New York City Municipal Finance Water & Sewer Systems Revenue, 4.25%, 6/15/39 7,750,000 1,425,000 AA-/A1 New York State Dormitory Authority Revenue, 7.5%, 5/15/11 1,506,439 1,295,000 AA-/A1 New York State Dormitory Authority Revenue, 7.5%, 5/15/11 1,419,294 5,250,000 AA-/A1 New York State Dormitory Authority Revenue, 7.5%, 5/15/13 6,212,010 1,500,000 AA-/Aa3 Port Authority of NY & NJ, Ninety Third Series, 6.125%, 6/1/94 1,604,595 ------------ $ 22,898,135 - ---------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 18 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 - ------------------------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value - ------------------------------------------------------------------------------------------------- Oklahoma -- 1.5% $ 5,590,000 AA/Baa1 McGee Creek Authority Water Revenue, 6.0%, 1/1/23 $ 5,948,040 ----------- $ 5,948,040 - ------------------------------------------------------------------------------------------------- Pennsylvania -- 4.5% 10,000,000 A-/Baa1 Lehigh County Pennsylvania Industrial Development Authority Pollution Control, 4.75%, 2/15/27 $ 7,565,700 5,000,000 BBB+/Baa1 Northampton County Pennsylvania General Purpose Authority Revenue, 5.5%, 8/15/40 3,251,250 6,000,000 AA/Aa2 Philadelphia Pennsylvania Hospital, 4.5%, 7/1/37 4,186,680 3,000,000 AA/A3 Southeastern Pennsylvania Transportation Authority Pennsylvania, 4.75%, 3/1/29 2,608,800 ----------- $17,612,430 - ------------------------------------------------------------------------------------------------- Puerto Rico -- 1.0% 5,000,000 A+/A1 Puerto Rico Sales Tax Financing 5.25%, 8/1/57 $ 3,979,150 ----------- $ 3,979,150 - ------------------------------------------------------------------------------------------------- South Carolina -- 4.8% 1,000,000 AA-/A2 Dorchester South Carolina County School District, 5.25%, 12/1/29 $ 947,710 15,000,000 A-/Baa1 Piedmont Municipal Power Agency, 5.25%, 1/1/21 13,830,150 5,000,000 AAA/Aa2 Scago Educational Facilities Corp. For School Project, 4.375%, 12/1/31 3,911,650 ----------- $18,689,510 - ------------------------------------------------------------------------------------------------- Tennessee -- 1.5% 10,000,000 NR/NR Sumner County Tennessee Health Educational, 5.5%, 11/1/46 $ 6,012,100 ----------- $ 6,012,100 - ------------------------------------------------------------------------------------------------- Texas -- 5.0% 4,475,000 AAA/Aaa Crowley Texas Independent School District, 3.5%, 8/1/36 $ 3,187,050 15,000,000 A/Baa1 Dallas County Texas Utilities & Reclamation, 5.375%, 2/15/29 11,951,100 4,600,000 AA/Aa1 San Antonio Texas Electricity & Gas, Series A, 4.5%, 2/1/21 4,587,534 ----------- $19,725,684 - ------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 19 Schedule of Investments | 12/31/08 (continued) - --------------------------------------------------------------------------------------------------- S&P/Moody's Principal Ratings Amount (unaudited) Value - --------------------------------------------------------------------------------------------------- Washington -- 8.2% $ 5,755,000 A/Baa1 Centralia Washington Electric Revenue, 4.25%, 12/1/26 $ 4,757,716 10,850,000 AAA/NR King County Washington Housing Authority, 5.5%, 5/1/38 9,628,724 4,000,000 AA-/A1 King County Washington Public Hospital, 5.25%, 12/1/37 3,550,360 2,971,000 AAA/NR Seattle, Washington Housing Authority, 6.6%, 8/20/38 2,767,189 6,290,000 NR/NR Vancouver Washington Housing Authority, 5.65%, 3/1/31 4,008,617 3,450,000 NR/Aaa Washington State Housing Finance, 5.45%, 12/1/33 3,091,510 5,000,000 AAA/Aa2 Washington State Health Care Facilities, 5.25%, 10/1/33 4,379,600 ------------ $ 32,183,716 - --------------------------------------------------------------------------------------------------- TOTAL MUNICIPAL BONDS (Cost $451,087,167) $378,404,642 - --------------------------------------------------------------------------------------------------- Shares - --------------------------------------------------------------------------------------------------- TAX EXEMPT MONEY MARKET MUTUAL FUND -- 1.8% 7,000,000 Blackrock Liquidity Funds MuniFund Portfolio $ 7,000,000 - --------------------------------------------------------------------------------------------------- TOTAL TAX EXEMPT MONEY MARKET MUTUAL FUND (Cost $7,000,000) $ 7,000,000 - --------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 98.2% (Cost $458,087,167) (a) $385,404,642 - --------------------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 2.8% $ 6,866,444 - --------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $392,271,086 =================================================================================================== NR Not rated by either S&P or Moody's. (a) At December 31, 2008, the net unrealized loss on investments based on cost for federal income tax purposes of $454,593,149 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $ 12,760,647 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (81,949,154) -------------- Net unrealized loss $ (69,188,507) ============== Purchases and sales of securities (excluding temporary cash investments) for the year ended December 31, 2008 aggregated $122,306,494 and $126,130,629, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) The accompanying notes are an integral part of these financial statements. 20 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of December 31, 2008, in valuing the Fund's assets: - -------------------------------------------------------------------------------- Investments Valuation Inputs in Securities - -------------------------------------------------------------------------------- Level 1 -- Quoted Prices $ 7,000,000 Level 2 -- Other Significant Observable Inputs 378,404,642 Level 3 -- Significant Unobservable Inputs - -------------------------------------------------------------------------------- Total $385,404,642 - -------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 21 Statement of Assets and Liabilities | 12/31/08 ASSETS: Investment in securities (cost $458,087,167) $385,404,642 Cash 2,638,708 Receivables -- Fund shares sold 553,059 Interest 6,594,195 Due from Pioneer Investment Management, Inc. 47,412 Other 27,392 - -------------------------------------------------------------------------------- Total assets $395,265,408 - -------------------------------------------------------------------------------- LIABILITIES: Payables -- Fund shares repurchased $ 2,191,874 Dividends 692,235 Due to affiliates 25,293 Accrued expenses 84,920 - -------------------------------------------------------------------------------- Total liabilities $ 2,994,322 - -------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $460,788,798 Undistributed net investment income 3,964,920 Accumulated net realized gain on investments 199,893 Net unrealized loss on investments (72,682,525) - -------------------------------------------------------------------------------- Total net assets $392,271,086 ================================================================================ NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $353,257,476/32,406,828 shares) $ 10.90 Class B (based on $5,286,076/488,154 shares) $ 10.83 Class C (based on $15,156,651/1,399,645 shares) $ 10.83 Class Y (based on $18,570,883/1,706,023 shares) $ 10.89 MAXIMUM OFFERING PRICE: Class A ($10.90 [divided by] 95.50% ) $ 11.41 ================================================================================ The accompanying notes are an integral part of these financial statements. 22 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Statement of Operations For the Year Ended 12/31/08 INVESTMENT INCOME: Interest $25,366,883 Other income 116,937 - ----------------------------------------------------------------------------------------- Total investment income $ 25,483,820 - ----------------------------------------------------------------------------------------- EXPENSES: Management fees $ 2,218,144 Transfer agent fees and expenses Class A 153,994 Class B 4,847 Class C 5,371 Class Y 299 Distribution fees Class A 1,049,582 Class B 63,196 Class C 147,253 Shareholder communications expense 80,988 Administrative fees 139,525 Custodian fees 14,156 Registration fees 71,031 Professional fees 75,472 Printing expense 46,191 Fees and expenses of nonaffiliated trustees 14,391 Miscellaneous 94,190 - ----------------------------------------------------------------------------------------- Total expenses $ 4,178,630 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (238,304) Less fees paid indirectly (3,953) - ----------------------------------------------------------------------------------------- Net expenses $ 3,936,373 - ----------------------------------------------------------------------------------------- Net investment income $ 21,547,447 - ----------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net realized gain on investments $ 4,005,583 - ----------------------------------------------------------------------------------------- Change in net unrealized gain on investments $(97,753,876) - ----------------------------------------------------------------------------------------- Net loss on investments $(93,748,293) - ----------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $(72,200,846) ========================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 23 Statement of Changes in Net Assets For the Years Ended 12/31/08 and 12/31/07, respectively - --------------------------------------------------------------------------------------------- Year Ended Year Ended 12/31/08 12/31/07 - --------------------------------------------------------------------------------------------- FROM OPERATIONS: Net investment income $ 21,547,447 $ 22,308,031 Net realized gain on investments 4,005,583 5,628,317 Change in net unrealized gain (loss) on investments (97,753,876) (21,106,304) - --------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $ (72,200,846) $ 6,830,044 - --------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.59 and $0.61 per share, respectively) $ (19,564,148) $(20,186,172) Class B ($0.47 and $0.49 per share, respectively) (237,225) (235,944) Class C ($0.49 and $0.50 per share, respectively) (571,813) (357,021) Class Y ($0.63 and $0.64 per share, respectively) (1,141,052) (1,187,622) Net realized gain: Class A ($0.07 and $0.20 per share, respectively) (2,148,067) (6,435,709) Class B ($0.07 and $0.20 per share, respectively) (33,564) (93,464) Class C ($0.07 and $0.20 per share, respectively) (86,185) (181,030) Class Y ($0.07 and $0.20 per share, respectively) (122,479) (321,998) - --------------------------------------------------------------------------------------------- Total distributions to shareowners $ (23,904,533) $(28,998,960) - --------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 62,854,641 $ 54,924,560 Reinvestment of distributions 15,053,348 18,570,687 Cost of shares repurchased (83,439,041) (69,314,733) - --------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from Fund share transactions $ (5,531,052) $ 4,180,514 - --------------------------------------------------------------------------------------------- Net decrease in net assets $(101,636,431) $(17,988,402) NET ASSETS: Beginning of year 493,907,517 511,895,919 - --------------------------------------------------------------------------------------------- End of year $ 392,271,086 $493,907,517 - --------------------------------------------------------------------------------------------- Undistributed net investment income $ 3,964,920 $ 3,939,514 - --------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 24 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 - ------------------------------------------------------------------------------------------------ '08 Shares '08 Amount '07 Shares '07 Amount - ------------------------------------------------------------------------------------------------ Class A Shares sold 3,666,507 $ 46,529,212 2,864,230 $39,598,214 Reinvestment of distributions 1,183,415 14,552,600 1,318,760 18,141,243 Less shares repurchased (5,860,093) (72,313,927) (4,147,935) (57,309,060) - ------------------------------------------------------------------------------------------------ Net increase (decrease) (1,010,171) $(11,232,115) 35,055 $ 430,397 ================================================================================================ Class B Shares sold 149,173 $ 1,857,683 185,507 $ 2,547,320 Reinvestment of distributions 10,028 122,813 10,578 144,393 Less shares repurchased (173,390) (2,147,850) (137,806) (1,877,625) - ------------------------------------------------------------------------------------------------ Net increase (decrease) (14,189) $ (167,354) 58,279 $ 814,088 ================================================================================================ Class C Shares sold 745,034 $ 9,301,426 703,468 $ 9,677,444 Reinvestment of distributions 27,650 334,341 19,974 271,653 Less shares repurchased (313,737) (3,805,241) (203,062) (2,768,340) - ------------------------------------------------------------------------------------------------ Net increase 458,947 $ 5,830,526 520,380 $ 7,180,757 ================================================================================================ Class Y Shares sold 406,862 $ 5,166,320 226,691 $ 3,101,582 Reinvestment of distributions 3,714 43,594 985 13,398 Less shares repurchased (434,802) (5,172,023) (533,236) (7,359,708) - ------------------------------------------------------------------------------------------------ Net increase (decrease) (24,226) $ 37,891 (305,560) $(4,244,728) ================================================================================================ The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 25 Financial Highlights - ------------------------------------------------------------------------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 12/31/08 12/31/07 12/31/06 12/31/05 12/31/04 (a) - ------------------------------------------------------------------------------------------------------------------------------------ Class A Net asset value, beginning of period $ 13.50 $ 14.11 $ 14.13 $ 14.38 $ 14.45 - ------------------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.60 $ 0.62 $ 0.53 $ 0.54 $ 0.61(b) Net realized and unrealized gain (loss) on investments (2.54) (0.42) 0.18 0.14 0.14 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ (1.94) $ 0.20 $ 0.71 $ 0.68 $ 0.75 Distributions to shareowners: Net investment income (0.59) (0.61) (0.61) (0.64) (0.60) Net realized gain (0.07) (0.20) (0.12) (0.29) (0.22) - ------------------------------------------------------------------------------------------------------------------------------------ Net decrease in net asset value $ (2.60) $ (0.61) $ (0.02) $ (0.25) $ (0.07) - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 10.90 $ 13.50 $ 14.11 $ 14.13 $ 14.38 ==================================================================================================================================== Total return* (14.85)% 1.40% 5.20% 4.81% 5.40% Ratio of net expenses to average net assets+ 0.82% 0.82% 0.86% 0.87% 0.91% Ratio of net investment income to average net assets+ 4.66% 4.45% 4.48% 4.42% 4.25% Portfolio turnover rate 27% 18% 8% 12% 7% Net assets, end of period (in thousands) $353,257 $451,219 $471,084 $ 16,033 $ 227 Ratios with no waiver of fees by PIM and no reduction for fees paid indirectly: Net expenses 0.88% 0.85% 0.96% 1.16% 0.91% Net investment income 4.60% 4.42% 4.38% 4.13% 4.25% Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 0.82% 0.82% 0.86% 0.87% 0.91% Net investment income 4.66% 4.45% 4.48% 4.42% 4.25% - ------------------------------------------------------------------------------------------------------------------------------------ (a) Effective August 2, 2004, PIM became the sub-advisor of the Fund and subsequently became the advisor on December 10, 2004. (b) Net investment income per share has been calculated using the average shares method. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + Ratios assuming no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 26 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 - ------------------------------------------------------------------------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 12/31/08 12/31/07 12/31/06 12/31/05 12/31/04 (a) - ------------------------------------------------------------------------------------------------------------------------------------ Class B Net asset value, beginning of period $ 13.41 $ 14.03 $ 14.07 $ 14.34 $ 14.42 - ------------------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.48 $ 0.48 $ 0.46 $ 0.45 $ 0.49(b) Net realized and unrealized gain (loss) on investments (2.52) (0.41) 0.14 0.12 0.14 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ (2.04) $ 0.07 $ 0.60 $ 0.57 $ 0.63 Distributions to shareowners: Net investment income (0.47) (0.49) (0.52) (0.55) (0.49) Net realized gain (0.07) (0.20) (0.12) (0.29) (0.22) - ------------------------------------------------------------------------------------------------------------------------------------ Net decrease in net asset value $ (2.58) $ (0.62) $ (0.04) $ (0.27) $ (0.08) - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 10.83 $ 13.41 $ 14.03 $ 14.07 $ 14.34 ==================================================================================================================================== Total return* (15.60)% 0.46% 4.36% 4.02% 4.52% Ratio of net expenses to average net assets+ 1.72% 1.72% 1.69% 1.41% 1.70% Ratio of net investment income to average net assets+ 3.76% 3.55% 3.62% 3.90% 3.49% Portfolio turnover rate 27% 18% 8% 12% 7% Net assets, end of period (in thousands) $ 5,286 $ 6,737 $ 6,228 $ 2,369 $ 10 Ratios with no waiver of fees by PIM and no reduction for fees paid indirectly: Net expenses 1.72% 1.78% 1.69% 1.68% 1.70% Net investment income 3.76% 3.49% 3.62% 3.63% 3.49% Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 1.72% 1.72% 1.69% 1.41% 1.70% Net investment income 3.76% 3.55% 3.62% 3.90% 3.49% - ------------------------------------------------------------------------------------------------------------------------------------ (a) Effective August 2, 2004, PIM became the sub-advisor of the Fund and subsequently became the advisor on December 10, 2004. (b) Net investment income per share has been calculated using the average shares method. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + Ratios assuming no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 27 Financial Highlights (continued) - ------------------------------------------------------------------------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 12/31/08 12/31/07 12/31/06 12/31/05 12/31/04 (a) - ------------------------------------------------------------------------------------------------------------------------------------ Class C Net asset value, beginning of period $ 13.42 $ 14.02 $ 14.04 $ 14.34 $ 14.42 - ------------------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.45 $ 0.45 $ 0.44 $ 0.44 $ 0.47(b) Net realized and unrealized gain (loss) on investments (2.48) (0.35) 0.18 0.09 0.14 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ (2.03) $ 0.10 $ 0.62 $ 0.53 $ 0.61 Distributions to shareowners: Net investment income (0.49) (0.50) (0.52) (0.54) (0.47) Net realized gain (0.07) (0.20) (0.12) (0.29) (0.22) - ------------------------------------------------------------------------------------------------------------------------------------ Net decrease in net asset value $ (2.59) $ (0.60) $ (0.02) $ (0.30) $ (0.08) - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 10.83 $ 13.42 $ 14.02 $ 14.04 $ 14.34 ==================================================================================================================================== Total return* (15.56)% 0.67% 4.52% 3.78% 4.38% Ratio of net expenses to average net assets+ 1.65% 1.58% 1.65% 1.38% 1.84% Ratio of net investment income to average net assets+ 3.85% 3.66% 3.58% 3.87% 3.35% Portfolio turnover rate 27% 18% 8% 12% 7% Net assets, end of period (in thousands) $ 15,157 $ 12,620 $ 5,891 $ 1,183 $ 10 Ratios assuming no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.65% 1.58% 1.65% 1.63% 1.84% Net investment income 3.85% 3.66% 3.58% 3.62% 3.35% Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 1.65% 1.58% 1.65% 1.38% 1.84% Net investment income 3.85% 3.66% 3.58% 3.87% 3.35% - ------------------------------------------------------------------------------------------------------------------------------------ (a) Effective August 2, 2004, PIM became the sub-advisor of the Fund and subsequently became the advisor on December 10, 2004. (b) Net investment income per share has been calculated using the average shares method. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. + Ratios assuming no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 28 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 - ------------------------------------------------------------------------------------------------------------------------------------ Year Ended Year Ended 11/10/06 to 12/31/08 12/31/07 12/31/06 (a) - ------------------------------------------------------------------------------------------------------------------------------------ Class Y Net asset value, beginning of period $ 13.48 $ 14.09 $ 14.17 - ------------------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment income $ 0.62 $ 0.67 $ 0.09 Net realized and unrealized loss on investments (2.51) (0.44) (0.06) - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ (1.89) $ 0.23 $ 0.03 Distributions to shareowners: Net investment income (0.63) (0.64) (0.11) Net realized gain (0.07) (0.20) -- - ------------------------------------------------------------------------------------------------------------------------------------ Net decrease in net asset value $ (2.59) $ (0.61) $ (0.08) - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 10.89 $ 13.48 $ 14.09 ==================================================================================================================================== Total return* (14.56)% 1.67% 0.21%(b) Ratio of net expenses to average net assets+ 0.58% 0.54% 0.60%** Ratio of net investment income to average net assets+ 4.90% 4.73% 4.49%** Portfolio turnover rate 27% 18% 8% Net assets, end of period (in thousands) $ 18,571 $ 23,331 $ 28,693 Ratios assuming no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 0.58% 0.54% 0.60%** Net investment income 4.90% 4.73% 4.49%** Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 0.58% 0.54% 0.60%** Net investment income 4.90% 4.73% 4.49%** - ------------------------------------------------------------------------------------------------------------------------------------ (a) Class Y Shares were first publicly offered November 10, 2006. (b) Not Annualized. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Annualized. + Ratios assuming no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 29 Notes to Financial Statements | 12/31/08 1. Organization and Significant Accounting Policies Pioneer AMT-Free Municipal Fund (the Fund) is one of seven series of portfolios comprising Pioneer Series Trust II, a Delaware statutory trust registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The investment objective of the Fund is to seek a high level of current income exempt from federal income tax as is consistent with the relative stability of capital. The Fund offers four classes of shares designated as Class A, Class B, Class C and Class Y shares. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Share classes have exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares. Class B shares convert to Class A shares approximately eight years after the date of purchase. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses, and gain or loss on investments during the reporting period. Actual results could differ from those estimates. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectuses contain unaudited information regarding the Fund's principal risks. Please refer to those documents when considering the Fund's principal risks. 30 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry: A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the exchange. Securities are valued at prices supplied by independent pricing services, which consider such factors as Treasury spreads, yields, maturities and ratings. Valuations may be supplemented by dealers and other sources, as required. Securities for which there are no other readily available market quotations are valued using fair value methods pursuant to procedures adopted by the Board of Trustees. At December 31, 2008, there were no securities that were valued using fair value methods. Temporary cash investments are valued at cost which approximates market value. Discount and premium on debt securities are accreted or amortized, respectively daily into interest income on a yield-to-maturity basis with a corresponding increase or decrease in the cost basis of the security. Interest income is recorded on the accrual basis. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. B. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal tax provision is required. Tax years for the prior three fiscal years remain subject to examination by tax authorities. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Fund's distributions may be shown in the accompanying financial statements as from or in excess of net investment income or as from net realized gain on investment transactions, or as from paid-in capital, depending on the type of book/tax differences that may exist. At December 31, 2008, the Fund has reclassified $7,803 to decrease undistributed net investment income and $7,803 to increase accumulated net realized gain on investments, to reflect permanent book/tax differences. The reclassification has no impact on the net assets of the Fund and presents the Fund's capital accounts on a tax basis. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 31 The tax character of distributions paid during the years ended December 31, 2008 and December 31, 2007 was as follows: - -------------------------------------------------------------------------------- 2008 2007 - -------------------------------------------------------------------------------- Distributions paid from: Ordinary income $ 232,204 $ -- Tax-exempt income 21,281,534 21,968,940 Long-term capital gain 2,390,295 7,030,020 - -------------------------------------------------------------------------------- Total $23,904,533 $28,998,960 ================================================================================ The following shows the components of distributable earnings on a federal income tax basis at December 31, 2008: - -------------------------------------------------------------------------------- 2008 - -------------------------------------------------------------------------------- Undistributable earnings: Undistributed tax-exempt income $ 470,902 Undistributed long-term gain 199,893 Unrealized depreciation (69,188,507) - -------------------------------------------------------------------------------- Total $(68,517,712) ================================================================================ The difference between book basis and tax-basis unrealized appreciation is attributable to the tax treatment of premium and amortization and interest on defaulted bonds. C. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A., (UniCredit), earned $26,772 in underwriting commissions on the sale of Class A shares during the year ended December 31, 2008. D. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on the respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class B and Class C shares of the Fund, respectively (see Note 4). Class Y shares are not subject to a distribution plan. Shareowners of each class participate in all expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services, which are allocated based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). 32 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 The Fund declares, as daily dividends, substantially all of its net investment income. All dividends are paid on a monthly basis. Short-term capital gain distributions, if any, may be declared with the daily dividends. Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner, at the same time, except that Class A, Class B, Class C and Class Y shares can bear different transfer agent and distribution expense rates. 2. Management Agreement Pioneer Investment Management, Inc., (PIM), a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at the annual rate of 0.50% of the Fund's average daily net assets up to $250 million; 0.45% of the next $500 million; and 0.40% of the excess over $750 million. For the year ended December 31, 2008, the net management fee was equivalent to 0.48% of average daily net assets. PIM has agreed to limit ordinary operating expenses to the extent required to reduce Fund expenses to 0.82%, 1.72% and 1.72% of the average daily net assets attributable to Class A, Class B and Class C shares, respectively. These limitations are in effect through May, 1, 2012 for Class A shares and through May 1, 2010 for Class B and Class C shares. There can be no assurance that PIM will extend the expense limit agreement beyond such periods. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $5,387 in management fees, administrative costs and certain other fees payable to PIM at December 31, 2008. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimbursed PIMSS for out-of-pocket expenses related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended December 31, 2008, such out of pocket expenses by class of shares were as follows: - -------------------------------------------------------------------------------- Shareholder Communications: - -------------------------------------------------------------------------------- Class A $70,659 Class B 4,565 Class C 5,000 Class Y 764 - -------------------------------------------------------------------------------- Total $80,988 ================================================================================ Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 33 Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $16,951 in transfer agent fees and shareholder communications expense payable to PIMSS at December 31, 2008. 4. Distribution Plans The Fund adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A, Class B and Class C. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund pays PFD 1.00% of the average daily net assets attributable to Class B and Class C shares. The fee for Class B and Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class B and Class C shares. Prior to February 1, 2008, PFD was reimbursed under the Distribution Plan for distribution expenses in an amount of up to 0.25% of the average daily net assets attributable to Class A shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $2,955 in distribution fees payable to PFD at December 31, 2008. In addition, redemptions of each class of shares (except Class Y shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 18 months of purchase. Class B shares that are redeemed within five years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00%, based on the lower of cost or market value of shares being redeemed. Proceeds from the CDSCs are paid to PFD. For the year ended December 31, 2008, CDSCs in the amount of $49,610 were paid to PFD. 5. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS which may result in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended December 31, 2008, the Fund's expenses were reduced $3,953 under such arrangements. 6. New Pronouncement In March 2008, Statement of Financial Accounting Standards No. 161, Disclosures about Derivative Instruments and Hedging Activities ("SFAS 161"), was issued and is effective for fiscal years beginning after November 15, 2008. SFAS 161 requires enhanced disclosures about an entity's derivative and hedging activities. Management is currently evaluating the impact the adoption of SFAS 161 will have on the Fund's financial statement disclosures. 34 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust II and Shareowners of Pioneer AMT-Free Municipal Fund: - -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer AMT-Free Municipal Fund, one of the series comprising the Pioneer Series Trust II (the "Trust"), including the schedule of investments, as of December 31, 2008, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and the financial highlights for each of the periods indicated therein. These financial statements and financial highlights are the responsibility of the Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Trust's internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of December 31, 2008, by correspondence with the custodian and brokers. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer AMT-Free Municipal Fund of the Pioneer Series Trust II at December 31, 2008, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and financial highlights for each of the periods indicated therein, in conformity with U.S. generally accepted accounting principles. /s/ Ernst & Young LLP Boston, Massachusetts February 18, 2009 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 35 ADDITIONAL INFORMATION (unaudited) For the year ended December 31, 2008, certain dividends paid by the Fund may be subject to a maximum tax rate of 15%, as provided for by the Jobs and Growth Tax Relief Reconciliation Act (the Act) of 2003. The Fund intends to designate up to the maximum amount of such dividends allowable under the Act, as taxed at a maximum rate of 15%. Complete information will be computed and reported in conjunction with your 2008 form 1099-DIV. The percentages of the Fund's ordinary income distributions that are exempt from nonresident alien (NRA) tax withholding resulting from qualified interest income and qualified short term gains were 100.0% and 0.0%, respectively. 36 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Ernst & Young LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at www.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. Trustees and Officers The Board of Trustees provides broad supervision over the Fund's affairs. The officers of the Fund are responsible for the Fund's operations. The Trustees and officers are listed below, together with their principal occupations during the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a trustee of each of the 76 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 37 Interested Trustees - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Years Held by this Trustee - ------------------------------------------------------------------------------------------------------------------------------------ John F. Cogan, Jr. Chairman of the, Trustee since 2003. Deputy Chairman and a Director of None (82)* Board Trustee Serves until a successor Pioneer Global Asset Management S.p.A. and President trustee is elected or ("PGAM"); Non-Executive Chairman and a earlier retirement or Director of Pioneer Investment removal. Management USA Inc. ("PIM-USA"); Chairman and a Director of Pioneer; Chairman and Director of Pioneer Institutional Asset Management, Inc. (since 2006); Director of Pioneer Alternative Investment Management Limited (Dublin); President and a Director of Pioneer Alternative Invest- ment Management (Bermuda) Limited and affiliated funds; Director of PIOGLOBAL Real Estate Investment Fund (Russia) (until June 2006); Director of Nano-C, Inc. (since 2003); Director of Cole Management Inc. (since 2004); Director of Fiduciary Counseling, Inc.; President and Director of Pioneer Funds Dis- tributor, Inc. ("PFD") (until May 2006); President of all of the Pioneer Funds; and Of Counsel, Wilmer Cutler Pickering Hale and Dorr LLP - ------------------------------------------------------------------------------------------------------------------------------------ Daniel K. Kingsbury Trustee and Trustee since 2008. Director, CEO and President of Pioneer None (50)* Executive Vice Serves until a successor Investment Management USA Inc. (since President trustee is elected or February 2007); Director and President earlier retirement or of Pioneer Investment Management, Inc. removal. and Pioneer Institutional Asset Management, Inc. (since February 2007); Executive Vice President of all of the Pioneer Funds (since March 2007); Direc- tor of Pioneer Global Asset Management S.p.A. (since April 2007); Head of New Markets Division, Pioneer Global Asset Management S.p.A. (2000 - 2007) - ------------------------------------------------------------------------------------------------------------------------------------ * Mr. Cogan and Mr. Kingsbury are Interested Trustees because they are officers or directors of the Fund's investment adviser and certain of its affiliates. 38 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Independent Trustees - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Year Held by this Trustee - ------------------------------------------------------------------------------------------------------------------------------------ David R. Bock (65) Trustee Trustee since 2005. Executive Vice President and Chief Director of Serves until a successor Financial Officer, I-trax, Inc. Enterprise Com- trustee is elected or (publicly traded health care services munity Investment, earlier retirement or company) (2004 - 2007); Partner, Federal Inc. (privately-held removal. City Capital Advisors (boutique merchant affordable housing bank) (1997 to 2004 and 2008 - present); finance company); and Executive Vice President and Chief and Director of New Financial Officer, Pedestal Inc. York Mortgage Trust (internet-based mortgage trading (publicly traded company) (2000 - 2002) mortgage REIT) - ------------------------------------------------------------------------------------------------------------------------------------ Mary K. Bush (60) Trustee Trustee since 2003. President, Bush International, LLC Director of Marriott Serves until a successor (international financial advisory International, trustee is elected or firm) Inc.; Director of earlier retirement or Discover Financial removal. Services (credit card issuer and electronic payment services); Director of Briggs & Stratton Co. (engine manufacturer); Director of UAL Corporation (airline holding company); Director of Mantech International Corporation (national security, defense, and intel- ligence technology firm); and Member, Board of Gov- ernors, Investment Company Institute - ------------------------------------------------------------------------------------------------------------------------------------ Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 39 Independent Trustees (continued) - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Years Held by this Trustee - ------------------------------------------------------------------------------------------------------------------------------------ Benjamin M. Trustee Trustee since 2008. Professor, Harvard University Trustee, Mellon Friedman (64) Serves until a successor Institutional Funds trustee is elected or Investment Trust and earlier retirement or Mellon Institutional removal Funds Master Portfolio (oversees 17 portfolios in fund complex) - ------------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Trustee Trustee since 2003. Founding Director, Vice President and None Graham (61) Serves until a successor Corporate Secretary, The Winthrop Group, trustee is elected or Inc. (consulting firm); and Desautels earlier retirement or Faculty of Management, McGill University removal. - ------------------------------------------------------------------------------------------------------------------------------------ Thomas J. Perna Trustee Trustee since 2006. Chief Executive Officer, Quadriserv, None (58) Serves until a successor Inc. (technology products for securities trustee is elected or lending industry) (2008 - present); earlier retirement or Private investor (2004 - 2008); and removal. Senior Executive Vice President, The Bank of New York (financial and securities services) (1986 - 2004) - ------------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret Trustee Trustee since 2003. President and Chief Executive Officer, Director of New (60) Serves until a successor Newbury, Piret & Company, Inc. America High Income trustee is elected or (investment banking firm) Fund, Inc. earlier retirement or (closed-end removal. investment company) - ------------------------------------------------------------------------------------------------------------------------------------ Stephen K. West Trustee Trustee since 2008. Senior Counsel, Sullivan & Cromwell LLP Director, The Swiss (80) Serves until a successor (law firm) Helvetia Fund, Inc. trustee is elected or (closed-end earlier retirement or investment company) removal. - ------------------------------------------------------------------------------------------------------------------------------------ 40 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 Fund Officers - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Years Held by this Officer - ------------------------------------------------------------------------------------------------------------------------------------ Dorothy E. Secretary Since 2003. Serves at Secretary of PIM-USA; Senior Vice None Bourassa (60) the discretion of the President -- Legal of Pioneer; Board Secretary/Clerk of most of PIM-USA's subsidiaries; and Secretary of all of the Pioneer Funds since September 2003 (Assistant Secretary from November 2000 to September 2003) - ------------------------------------------------------------------------------------------------------------------------------------ Christopher J. Assistant Secretary Since 2003. Serves at Associate General Counsel of Pioneer None Kelley (44) the discretion of the since January 2008 and Assistant Board Secretary of all of the Pioneer Funds since September 2003; Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 - ------------------------------------------------------------------------------------------------------------------------------------ Mark E. Bradley Treasurer Since 2008. Serves at Vice President -- Fund Accounting, None (49) the discretion of the Administration and Controller- ship Board Services of Pioneer; and Treasurer of all of the Pioneer Funds since March 2008; Deputy Treasurer of Pioneer from March 2004 to February 2008; Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008; and Treasurer and Senior Vice President, CDC IXIS Asset Management Services from 2002 to 2003 - ------------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti Assistant Treasurer Since 2003. Serves at Assistant Vice President -- Fund None (43) the discretion of the Accounting, Administration and Board Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan Assistant Treasurer Since 2003. Serves at Fund Accounting Manager -- Fund None (50) the discretion of the Accounting, Administration and Board Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 41 Fund Officers (continued) - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service Principal Occupation Other Directorships Name and Age with the Fund and Term of Office During Past Five Years Held by this Officer - ------------------------------------------------------------------------------------------------------------------------------------ Katherine Kim Assistant Treasurer Since 2003. Serves at Fund Administration Manager -- Fund None Sullivan (35) the discretion of the Accounting, Administration and Board Controllership Services since June 2003 and Assistant Treasurer of all of the Pioneer Funds since September 2003; Assistant Vice President -- Mutual Fund Operations of State Street Corporation from June 2002 to June 2003 (formerly Deutsche Bank Asset Management) - ------------------------------------------------------------------------------------------------------------------------------------ Teri W. Anderholm Chief Compliance Since 2007. Serves at Chief Compliance Officer of Pioneer None (49) Officer the discretion of the since December 2006 and of all the Board Pioneer Funds since January 2007; Vice President and Compliance Officer, MFS Investment Management (August 2005 to December 2006); Consultant, Fidelity Investments (February 2005 to July 2005); Independent Consultant (July 1997 to February 2005) - ------------------------------------------------------------------------------------------------------------------------------------ 42 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 This page for your notes. Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 43 This page for your notes. 44 Pioneer AMT-Free Municipal Fund | Annual Report | 12/31/08 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: - -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Telecommunications Device for the Deaf (TDD) 1-800-225-1997 Write to us: - -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: pioneerinvestments.com This report must be accompanied by a prospectus. The Fund files a complete statement of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. - -------------------------------------------------------------------------------- Pioneer Growth Leaders Fund - -------------------------------------------------------------------------------- Annual Report | December 31, 2008 - -------------------------------------------------------------------------------- Ticker Symbols: Class A LRPSX Class B LRPBX Class C LRPCX [LOGO]PIONEER Investments(R) visit us: pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 10 Comparing Ongoing Fund Expenses 13 Schedule of Investments 15 Financial Statements 20 Notes to Financial Statements 27 Report of Independent Registered Public Accounting Firm 33 Approval of Investment Sub-Advisory Agreement 34 Trustees, Officers and Service Providers 37 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 1 President's Letter Dear Shareowner, Stock and bond markets around the globe this year have experienced one of their most tumultuous periods in history. Investors have witnessed volatility of a magnitude that many have never before seen. Distance often provides the best vantage point for perspective. Still, we believe that the benefits of basic investment principles that have stood the test of time -- even in the midst of market turmoil -- cannot be underestimated. First, invest for the long term. The founder of Pioneer Investments, Philip L. Carret, began his investment career during the 1920s. One lesson he learned is that while great prosperity affords an advantageous time for selling stocks, extreme economic slumps can create opportunities for purchase. Indeed, many of our portfolio managers, who follow the value-conscious investing approach of our founder, are looking at recent market conditions as an opportunity to buy companies whose shares we believe have been unjustifiably beaten down by indiscriminate selling, but that we have identified as having strong prospects over time. While investors may be facing a sustained market downturn, we continue to believe that patience, along with staying invested in the market, are important considerations for long-term investors. A second principle is to stay diversified across different types of investments. The global scope of the current market weakness poses challenges for this basic investment axiom. But the turbulence makes now a good time to reassess your portfolio and make sure that your investments continue to meet your needs. We believe you should work closely with your financial advisor to find the mix of stocks, bonds and money market assets that is best aligned to your particular risk tolerance and investment objective. As the investment markets sort through the continuing crisis in the financial industry, we are staying focused on the fundamentals and risk management. With more than 80 years of experience behind us, we have learned how to navigate turbulent markets. At Pioneer Investments, risk management has always been a critical part of our culture -- not just during periods of extraordinary volatility. Our investment process is based on fundamental research, quantitative analysis and active portfolio management. This three-pillared process, which we apply to each of our portfolios, is supported by an integrated team approach and is designed to carefully balance risk and reward. While we 2 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 see potential chances for making money in many corners of the market, it takes research and experience to separate solid investment opportunities from speculation. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at www.pioneerinvestments.com. Thank you for investing with Pioneer. Respectfully, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 3 Portfolio Management Discussion | 12/31/08 The year 2008 will be remembered as one of the worst in the recent history of the stock market, as problems that began in the credit markets escalated and spread to create impacts virtually no one predicted. In the following interview, members of the portfolio management team from L. Roy Papp & Associates, the Fund's sub-adviser, who are responsible for management of Pioneer Growth Leaders Fund, discuss the factors that influenced the performance of the Fund during the year. Q How did the Fund perform during the 12 months ended December 31, 2008? A Pioneer Growth Leaders Fund Class A shares returned -33.84% at net asset value for the 12 months ended December 31, 2008. During the same period, the Fund's benchmark, the Russell 1000 Growth Index, returned -38.44%, while the average return of the 851 mutual funds in Lipper's Large Cap Core category was -37.23%. Q What were the principal factors affecting the Fund's performance during the 12 months ended December 31, 2008? A It was a horrible year in the stock market, with deep declines in most companies' share prices. The precipitous market drops were triggered in part by loose money policies that resulted in imprudent loans, especially in real estate, to unqualified borrowers. Those low-quality loans then were packaged by investment banks into securities that were sold to investors throughout the world. The poor quality of many mortgage loans became evident when housing values began declining, unleashing a cascading series of events that resulted in a deepening credit crisis that threatened the existence of major financial institutions. Government rescues and bailouts, and bankruptcies of well known financial corporations occurred over virtually the entire year, starting with JP Morgan Chase's buyout -- with the help of the federal government -- of Bear Stearns in March, and extending until the end of the year when Bank of America acquired Merrill Lynch and Wells Fargo bought Wachovia. While the credit crisis exacerbated the existing problems of more troubled companies, such as General Motors, it also created new problems for many profitable corporations that began to see their credit dry up. Market volatility hit its highest point in the weeks after investment bank Lehman Brothers filed for bankruptcy in September, when investor confidence disappeared, consumers curtailed spending and corporations throughout the economy saw revenues shrink at the very time they lost access to credit. The financials sector was the area that was most severely hit in this tumultuous market, as the share prices of even higher-quality companies with little credit exposure were pulled down with the rest of the sector. 4 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 The Fund's holdings could not escape the effects of the difficult market environment, although the Fund did outperform both its Russell benchmark and its Lipper competitive funds' average over the 12-month period. The Fund's performance over the period was helped by our traditional emphasis on corporations with strong balance sheets, little debt, steady earnings growth, good cash flow and experienced management teams. The Fund's non-financial holdings performed well, but its financials holdings, even when they had little direct exposure to the credit crisis, nevertheless were pulled down by the avalanche affecting the entire sector. Q What were some of the investments that most influenced the Fund's results over the 12 months ended December 31, 2008? A Several of the Fund's holdings performed very well in a difficult market, helping the Fund outperform its benchmark and Lipper category average. We believe this was the result of our emphasis on established, financially healthy corporations with strong balance sheets. These characteristics helped the corporations withstand the worst effects of the credit crisis. Our selections in the energy, financials, industrials and information technology sectors contributed to the Fund's relative outperformance. One of the better performing investments for the Fund was Johnson & Johnson, the diversified health care product company that has established itself in markets throughout the world. United Technologies, a diversified industrials and technology corporation, also performed well as it maintained its earnings outlook at a time when many other corporations were cutting back their earnings guidance. In the financials sector, three investments that helped the Fund were: T. Rowe Price, a mutual fund management company and asset manager; State Street, a custodian of financial assets as well as an asset management company; and Northern Trust, a custodian of financial assets as well as a major mortgage lender that successfully maintained high loan standards. These higher-quality corporations stood up relatively well, outperforming banks and investment banks more directly exposed to the deterioration in credit markets. Elsewhere, Expeditors International, a long-term Fund holding that is a specialist in planning logistics for international trade operations, fared well as its improvements in productivity helped its performance even as trade volumes weakened. Consulting firm Accenture, a relatively new Fund holding, did well during the 12-month period, as it benefited from growing demand for its services, which focus on helping corporations plan for greater reliance on outsourcing. In the energy sector, our investment in Chevron, a major integrated oil corporation, performed relatively well when it outpaced other oil field services companies, which were particularly hard-hit when energy prices retreated during the second half of 2008. Other investments that helped the Fund's performance were Techne, which produces proteins for the biotechnology and medical industries, and Canadian National, the major railroad Pioneer Growth Leaders Fund | Annual Report | 12/31/08 5 that benefited from its efficient operations and exposure to intermodal transport services. The Fund did, however, have a number of disappointments during the 12-month period. Omnicom, a diversified advertising and marketing firm, saw its revenues slip as clients cut back their marketing budgets as the economy weakened. In health care, equipment companies Medtronic and Stryker both failed to meet expectations. Medtronic's new stent product for the treatment of cardiac patients faced keen competition and failed to meet its revenue expectations. Nevertheless, we have continued to favor the company because of the bright prospects for its pacemaker and neurological businesses. Stryker, a specialist in medical equipment and orthopedic implants, was affected by concerns about hospital spending as well as by worries that some hip and knee replacement surgeries could be postponed at a time when many household budgets are pressured. Pharmacy retailer Walgreen also underperformed. While Walgreen prescription sales held up well, revenues from non-drug products at its retail stores failed to meet expectations. The Fund had a small position in conglomerate General Electric, but it nevertheless detracted from results because of worries about its financial services operations. Among technology investments, software company Adobe Systems proved to be a disappointment, after revenues from a new graphics product failed to meet expectations. Q What were some of the changes you made to the Fund during 2008? A We sold some of the more volatile stocks, investing the Fund instead in companies that we believed had superior long-term growth outlooks. We sold the Fund's investment in American Express, the financial services corporation, because of our concerns about consumer credit problems. We also liquidated positions in retailer Coach, diversified technology company International Business Machines, and delivery specialist United Parcel Service because such firms are typically vulnerable to a downturn in the economy. In addition, we sold the Fund's investment in O'Reilly Auto Parts, which failed to meet expectations at its retail outlets. New investments for the Fund during the year included: diversified electronics corporation Emerson Electric; Federated Investors, an asset manager specializing in money market funds and other lower-risk investments; and the aforementioned firms Accenture and Stryker. Q What is your investment outlook? A The abrupt curtailment of consumer spending was a major contributor to the economic downturn during 2008, but we believe several factors could help give a boost to consumer confidence and trigger more discretionary spending in 2009. They include: lower oil and gasoline prices, which have been putting more money in consumers' pockets; lower interest rates, which 6 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 should help consumer spending and even housing sales; the massive Federal government stimulus packages, which should put more money into the economy; and the widely held view that the economy should improve under a new national administration. We also see some potential improvement in the capital markets. We already have witnessed some evidence of progress in the bond market and we think huge amounts of money are on the sidelines, ready to be deployed into higher-quality investments once some signs of progress appear. We firmly believe that our bias toward higher-quality corporations gives the Fund a portfolio of companies that are more likely to be the survivors of the recent economic downturn. We think they should have the potential to flourish in any potential recovery. Please refer to the Schedule of Investments on pages 15-19 for a full listing of Fund securities. Investments in mid-sized companies may offer the potential for higher returns, but are also subject to greater short-term price fluctuations than larger, more established companies. The Fund invests in a limited number of securities and, as a result, the Fund's performance may be more volatile than the performance of other funds holding more securities. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These opinions should not be relied upon for any other purposes. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 7 Portfolio Summary | 12/31/08 Portfolio Diversification - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED BY A PIE CHART IN THE PRINTED MATERIAL.] U.S. Common Stocks 86.1% Temporary Cash Investments 13.9% Sector Distribution - -------------------------------------------------------------------------------- (As a percentage of equity holdings) [THE FOLLOWING DATA WAS REPRESENTED BY A PIE CHART IN THE PRINTED MATERIAL.] Information Technology 30.5% Health Care 20.3% Consumer Staples 13.9% Industrials 12.8% Financials 11.3% Consumer Discretionary 6.0% Energy 5.2% 10 Largest Holdings - -------------------------------------------------------------------------------- (As a percentage of equity holdings)* 1. Accenture, Ltd. 5.55% 2. Medco Health Solutions, Inc. 5.35 3. Chevron Corp. 5.16 4. Cisco Systems, Inc. 4.71 5. Clorox Co. 4.43 6. Expeditors International of Washington, Inc. 4.39 7. PepsiCo, Inc. 4.36 8. Techne Corp. 4.18 9. Medtronic, Inc. 3.88 10. Linear Technology Corp. 3.86 * This list excludes temporary cash and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 8 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Prices and Distributions | 12/31/08 Net Asset Value per Share - -------------------------------------------------------------------------------- Class 12/31/08 12/31/07 A $ 6.96 $ 12.82 - --------------------------------------------- B $ 6.20 $ 11.80 - --------------------------------------------- C $ 6.08 $ 11.58 - --------------------------------------------- Distributions per Share: 1/1/08-12/31/08 - -------------------------------------------------------------------------------- Short-Term Long-Term Class Dividends Capital Gains Capital Gains A $ -- $ -- $ 1.4500 - ------------------------------------------------------------- B $ -- $ -- $ 1.4500 - ------------------------------------------------------------- C $ -- $ -- $ 1.4500 - ------------------------------------------------------------- Index Definitions - -------------------------------------------------------------------------------- The Russell 1000 Growth Index measures the performance of large-cap U.S. growth stocks. Index returns assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. You cannot invest directly in an Index. The index defined here pertains to the "Value of $10,000 Investment" charts on pages 10-12. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 9 Performance Update | 12/31/08 Class A Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Growth Leaders Fund at public offering price, compared to that of the Russell 1000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ------------------------------------------------------------------ Net Asset Public Offering Period Value (NAV) Price (POP) - ------------------------------------------------------------------ 10 Years -3.46% -4.03% 5 Years -4.35 -5.47 1 Year -33.84 -37.63 - ------------------------------------------------------------------ Expense Ratio (Per prospectus dated May 1, 2008) - ------------------------------------------------------------------ Gross Net - ------------------------------------------------------------------ 1.43% 1.43% - ------------------------------------------------------------------ [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Small and Russell 1000 Mid Cap Growth Fund Growth Index 12/98 9,425 10,000 12/99 10,811 13,316 12/00 10,135 10,330 12/09 8,827 8,220 12/09 6,693 5,928 12/09 8,277 7,692 12/09 8,295 8,176 12/09 8,768 8,606 12/09 9,288 9,387 12/09 10,016 10,496 12/09 6,627 6,462 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers, Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Growth Leaders Fund was created through the reorganization of the predecessor Fund, Papp Stock Fund, on February 20, 2004. The performance of Class A shares of the Fund from November 29, 1989 to February 20, 2004 is the performance of Papp Stock Fund's single class, which has been restated to reflect any applicable sales charges and Rule 12b-1 fees (but not other differences in expenses). This adjustment has the effect of reducing the previously reported performance of Papp Stock Fund. 10 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Class B Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Growth Leaders Fund, compared to that of the Russell 1000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- 10 Years -4.43% -4.43% 5 Years -5.56 -5.56 1 Year -34.57 -36.67 - ---------------------------------------------------------------- Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 2.56% 2.56% - ---------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Small and Russell 1000 Mid Cap Growth Fund Growth Index 12/98 10,000 10,000 11,386 13,316 12/00 10,593 10,330 9,157 8,220 12/02 6,891 5,928 8,457 7,692 12/04 8,340 8,176 8,701 8,606 12/06 9,110 9,387 9,712 10,496 12/08 6,355 6,462 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If Redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). Effective December 1, 2004, the period during which a CDSC is applied to withdrawals was shortened to 5 years. The maximum CDSC for Class B shares continues to be 4%. For more complete information, please see the prospectus for details. Note: Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time you purchased those shares. For performance information for shares purchased prior to December 1, 2004, please visit www.pioneerinvestments.com/bshares. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers, Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Growth Leaders Fund was created through the reorganization of the predecessor Fund, Papp Stock Fund, on February 20, 2004. The performance of Class B shares of the Fund from November 29, 1989 to February 20, 2004 is the performance of Papp Stock Fund's single class, which has been restated to reflect any applicable sales charges and Rule 12b-1 fees (but not other differences in expenses). This adjustment has the effect of reducing the previously reported performance of Papp Stock Fund. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 11 Performance Update | 12/31/08 Class C Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Growth Leaders Fund, compared to that of the Russell 1000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- 10 Years -4.50% -4.50% 5 Years -5.69 -5.69 1 Year -34.35 -34.35 - ---------------------------------------------------------------- Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 2.85% 2.85% - ---------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Small and Russell 1000 Mid Cap Growth Fund Growth Index 12/98 10,000 10,000 11,386 13,316 12/00 10,593 10,330 9,157 8,220 12/02 6,891 5,928 8,457 7,692 12/04 8,304 8,176 8,673 8,606 12/06 9,076 9,387 9,610 10,496 12/08 6,309 6,462 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). If you paid a 1% sales charge, your returns would be lower than those shown above. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers, Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Growth Leaders Fund was created through the reorganization of the predecessor Fund, Papp Stock Fund, on February 20, 2004.The performance of Class C shares of the fund from November 29, 1989 to February 20, 2004 is the performance of Papp Stock Fund's single class, which has been restated to reflect any applicable sales charges and Rule 12b-1 fees (but not other differences in expenses). This adjustment has the effect of reducing the previously reported performance of Papp Stock Fund. 12 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables - -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Growth Leaders Fund Based on actual returns from July 1, 2008 through December 31, 2008. Share Class A B C Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - --------------------------------------------------------------------- Ending Account $ 727.43 $ 722.90 $ 725.41 Value on 12/31/08 - --------------------------------------------------------------------- Expenses Paid $ 7.60 $ 12.73 $ 11.75 During Period* - --------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.75%, 2.94% and 2.71% for Class A, Class B and Class C shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). Pioneer Growth Leaders Fund | Annual Report | 12/31/08 13 Comparing Ongoing Fund Expenses (continued) Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. 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 the 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 tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below 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 transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Growth Leaders Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from July 1, 2008 through December 31, 2008. Share Class A B C Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - --------------------------------------------------------------------- Ending Account $ 1,016.34 $ 1,010.36 $ 1,011.51 Value on 12/31/08 - --------------------------------------------------------------------- Expenses Paid $ 8.87 $ 14.86 $ 13.70 During Period* - --------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.75%, 2.94% and 2.71% for Class A, Class B and Class C shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). 14 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Schedule of Investments | 12/31/08 Shares Value COMMON STOCKS -- 99.2% ENERGY -- 5.1% Integrated Oil & Gas -- 5.1% 14,000 Chevron Corp. $ 1,035,580 ----------- Total Energy $ 1,035,580 - ----------------------------------------------------------------------------- CAPITAL GOODS -- 4.9% Aerospace & Defense -- 2.8% 10,500 United Technologies Corp. $ 562,800 - ----------------------------------------------------------------------------- Electrical Component & Equipment -- 1.4% 8,000 Emerson Electric Co. $ 292,880 - ----------------------------------------------------------------------------- Industrial Conglomerates -- 0.7% 9,000 General Electric Co. $ 145,800 ----------- Total Capital Goods $ 1,001,480 - ----------------------------------------------------------------------------- TRANSPORTATION -- 7.8% Air Freight & Couriers -- 4.4% 26,500 Expeditors International of Washington, Inc. (b) $ 881,655 - ----------------------------------------------------------------------------- Railroads -- 3.4% 18,800 Canadian National Railway Co. $ 691,088 ----------- Total Transportation $ 1,572,743 - ----------------------------------------------------------------------------- MEDIA -- 2.7% Advertising -- 2.7% 20,500 Omnicom Group, Inc. $ 551,860 ----------- Total Media $ 551,860 - ----------------------------------------------------------------------------- RETAILING -- 3.2% General Merchandise Stores -- 3.2% 19,000 Target Corp. (b) $ 656,070 ----------- Total Retailing $ 656,070 - ----------------------------------------------------------------------------- FOOD & DRUG RETAILING -- 5.1% Drug Retail -- 3.7% 30,000 Walgreen Co. $ 740,100 - ----------------------------------------------------------------------------- Food Distributors -- 1.4% 12,500 Sysco Corp. $ 286,750 ----------- Total Food & Drug Retailing $ 1,026,850 - ----------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 4.3% Soft Drinks -- 4.3% 16,000 PepsiCo, Inc. $ 876,320 ----------- Total Food, Beverage & Tobacco $ 876,320 - ----------------------------------------------------------------------------- HOUSEHOLD & PERSONAL PRODUCTS -- 4.4% Household Products -- 4.4% 16,000 Clorox Co. $ 888,960 ----------- Total Household & Personal Products $ 888,960 - ----------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 15 Schedule of Investments | 12/31/08 (continued) Shares Value HEALTH CARE EQUIPMENT & SERVICES -- 12.3% Health Care Equipment -- 7.0% 24,800 Medtronic, Inc. $ 779,216 16,000 Stryker Corp. 639,200 ----------- $ 1,418,416 - ----------------------------------------------------------------------------- Health Care Services -- 5.3% 25,656 Medco Health Solutions, Inc.* $ 1,075,243 ----------- Total Health Care Equipment & Services $ 2,493,659 - ----------------------------------------------------------------------------- PHARMACEUTICALS & BIOTECHNOLOGY -- 7.9% Life Sciences Tools & Services -- 4.2% 13,000 Techne Corp. $ 838,760 - ----------------------------------------------------------------------------- Pharmaceuticals -- 3.7% 12,500 Johnson & Johnson $ 747,875 ----------- Total Pharmaceuticals & Biotechnology $ 1,586,635 - ----------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 11.2% Asset Management & Custody Banks -- 11.2% 10,000 Federated Investors, Inc. $ 169,600 13,000 Northern Trust Corp. 677,820 19,000 State Street Corp. 747,270 19,000 T. Rowe Price Associates, Inc. 673,360 ----------- $ 2,268,050 ----------- Total Diversified Financials $ 2,268,050 - ----------------------------------------------------------------------------- SOFTWARE & SERVICES -- 16.3% Application Software -- 3.7% 35,000 Adobe Systems, Inc.* $ 745,150 - ----------------------------------------------------------------------------- Data Processing & Outsourced Services -- 3.6% 51,000 Western Union Co. $ 731,340 - ----------------------------------------------------------------------------- IT Consulting & Other Services -- 5.5% 34,000 Accenture, Ltd. $ 1,114,860 - ----------------------------------------------------------------------------- Systems Software -- 3.5% 36,000 Microsoft Corp. (b) $ 699,840 ----------- Total Software & Services $ 3,291,190 - ----------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 4.7% Communications Equipment -- 4.7% 58,000 Cisco Systems, Inc.* $ 945,400 ----------- Total Technology Hardware & Equipment $ 945,400 - ----------------------------------------------------------------------------- SEMICONDUCTORS -- 9.3% 44,000 Intel Corp. $ 645,040 35,000 Linear Technology Corp. (b) 774,200 24,000 Microchip Technology, Inc. (b) 468,720 ----------- $ 1,887,960 ----------- Total Semiconductors $ 1,887,960 - ----------------------------------------------------------------------------- TOTAL COMMON STOCKS (Cost $15,221,877) $20,082,757 - ----------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 16 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Principal Amount Value TEMPORARY CASH INVESTMENTS -- 16.0% Securities Lending Collateral -- 16.0% (c) Certificates of Deposit: $ 75,042 Abbey National Plc, 3.15%, 8/13/09 $ 75,042 75,032 Bank of Nova Scotia, 3.21%, 5/5/09 75,032 119,923 Bank of Scotland NY, 2.92%, 6/5/09 119,923 135,076 Barclays Bank, 1.5%, 5/27/09 135,076 23,859 Calyon NY, 4.62%, 1/16/09 23,859 150,084 CBA, 4.87%, 7/16/09 150,084 135,076 DNB NOR Bank ASA NY, 3.04%, 6/5/09 135,076 137,477 Intesa SanPaolo S.p.A., 1.44%, 5/22/09 137,477 8,693 NORDEA NY, 4.13%, 4/9/09 8,693 112,563 Royal Bank of Canada NY, 2.7%, 8/7/09 112,563 75,042 Royal Bank of Scotland, 3.06%, 3/5/09 75,042 15,001 Skandinavian Enskilda Bank NY, 3.06%, 2/13/09 15,001 150,083 Societe Generale, 3.29%, 9/4/09 150,083 135,076 Svenska Bank NY, 4.61%, 7/8/09 135,076 150,084 U.S. Bank NA, 2.25%, 8/24/09 150,084 ----------- $ 1,498,111 - ----------------------------------------------------------------------------- Commercial Paper: 14,301 BBVA U.S., 2.83%, 3/12/09 $ 14,301 150,083 Monumental Global Funding, Ltd., 2.5%, 8/17/09 150,083 75,042 CME Group, Inc., 2.9%, 8/6/09 75,042 75,034 General Electric Capital Corp., 2.86%, 3/16/09 75,034 147,381 American Honda Finance Corp., 4.95%, 7/14/09 147,381 150,084 HSBC Bank, Inc., 2.5%, 8/14/09 150,084 75,042 IBM, 2.39%, 9/25/09 75,042 135,076 MetLife Global Funding, 3.19%, 6/12/09 135,076 135,076 New York Life Global, 2.13%, 9/4/09 135,076 127,571 Westpac Banking Corp., 2.34%, 6/1/09 127,571 ----------- $ 1,084,690 - ----------------------------------------------------------------------------- Tri-party Repurchase Agreements: 330,185 Deutsche Bank, 0.25%, 1/2/09 $ 330,185 25,496 Barclays Capital Markets, 0.5%, 1/2/09 25,496 ----------- $ 355,681 - ----------------------------------------------------------------------------- Time Deposit: 150,084 BNP Paribas, 0.01%, 1/2/09 $ 150,084 - ----------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 17 Schedule of Investments | 12/31/08 (continued) Shares Value Money Market Mutual Funds: 37,521 Columbia Government Reserves Fund $ 37,521 112,563 JPMorgan, U.S. Government Money Market Fund 112,563 ----------- $ 150,084 ----------- Total Securities Lending Collateral $ 3,238,650 - ----------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $3,238,650) $ 3,238,650 - ----------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 115.2% (Cost $18,460,527)(a) $23,321,407 - ----------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- (15.2)% $(3,080,140) - ----------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $20,241,267 ============================================================================= * Non-income producing security. (a) At December 31, 2008, the net unrealized gain on investments based on cost for federal income tax purposes of $18,460,527 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $7,310,397 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (2,449,517) ---------- Net unrealized gain $4,860,880 ========== (b) At December 31, 2008, the following securities were out on loan: Shares Description Value 25,900 Expeditors International of Washington, Inc. $ 861,693 33,900 Linear Technology Corp. 749,868 20,000 Microchip Technology, Inc. 390,600 35,000 Microsoft Corp. 680,400 15,000 Target Corp. 517,950 - --------------------------------------------------------------------------- Total $3,200,511 =========================================================================== (c) Security lending collateral is managed by Credit Suisse. Purchases and sales of securities (excluding temporary cash investments) for the year ended December 31, 2008 aggregated $5,339,544 and $8,578,591, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The accompanying notes are an integral part of these financial statements. 18 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Schedule of Investments | 12/31/08 (continued) The following is a summary of the inputs used as of December 31, 2008, in valuing the Fund's assets: Investments Valuation Inputs in Securities Level 1 -- Quoted Prices $20,082,757 Level 2 -- Other Significant Observable Inputs 3,238,650 Level 3 -- Significant Unobservable Inputs -- - --------------------------------------------------------------- Total $23,321,407 =============================================================== The accompanying notes are an integral part of these financial statements. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 19 Statement of Assets and Liabilities | 12/31/08 ASSETS: Investment in securities (including securities loaned of $3,200,511) (cost $18,460,527) $23,321,407 Cash 187,958 Receivables -- Fund shares sold 27,589 Dividends 34,490 Other 29,222 - -------------------------------------------------------------------------------------- Total assets $23,600,666 - -------------------------------------------------------------------------------------- LIABILITIES: Payables -- Fund shares repurchased $ 51,005 Upon return of securities loaned 3,238,650 Due to affiliates 10,778 Accrued expenses 58,966 - -------------------------------------------------------------------------------------- Total liabilities $ 3,359,399 - -------------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $15,405,892 Accumulated net realized loss on investments (25,505) Net unrealized gain on investments 4,860,880 - -------------------------------------------------------------------------------------- Total net assets $20,241,267 ====================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $19,011,363/2,730,280 shares) $ 6.96 Class B (based on $516,386/83,308 shares) $ 6.20 Class C (based on $713,518/117,345 shares) $ 6.08 MAXIMUM OFFERING PRICE: Class A ($6.96 [divided by] 94.25%) $ 7.38 ====================================================================================== The accompanying notes are an integral part of these financial statements. 20 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Statement of Operations For the Year Ended 12/31/08 INVESTMENT INCOME: Dividends (net of foreign taxes withheld of $2,409) $481,384 Interest 4,300 Income from securities loaned, net 13,654 - ------------------------------------------------------------------------------------- Total investment income $ 499,338 - ------------------------------------------------------------------------------------- EXPENSES: Management fees $215,025 Transfer agent fees Class A 38,827 Class B 3,693 Class C 4,939 Distribution fees Class A 61,396 Class B 7,124 Class C 12,042 Shareholder communications expense 19,321 Administrative fees 8,599 Custodian fees 31,828 Registration fees 39,838 Professional fees 45,608 Printing expense 22,453 Fees and expenses of nonaffiliated trustees 5,604 Miscellaneous 5,202 - ------------------------------------------------------------------------------------- Total expenses $ 521,499 Less fees paid indirectly (1,201) - ------------------------------------------------------------------------------------- Net expenses $ 520,298 - ------------------------------------------------------------------------------------- Net investment loss $ (20,960) - ------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net realized gain on investments $ 2,078,820 - ------------------------------------------------------------------------------------- Change in net unrealized loss on investments $(13,016,972) - ------------------------------------------------------------------------------------- Net loss on investments $(10,938,152) - ------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $(10,959,112) ===================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 21 Statement of Changes in Net Assets For the Years Ended 12/31/08 and 12/31/07, respectively Year Ended Year Ended 12/31/08 12/31/07 FROM OPERATIONS: Net investment loss $ (20,960) $ (51,969) Net realized gain on investments 2,078,820 7,807,215 Change in net unrealized loss on investments (13,016,972) (4,641,212) - ---------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from operations $(10,959,112) $ 3,114,034 - ---------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.00 and $0.00 per share, respectively) $ -- $ (7,952) Net realized gain: Class A ($1.45 and $3.34 per share, respectively) (3,226,681) (7,442,922) Class B ($1.45 and $3.34 per share, respectively) (95,874) (180,922) Class C ($1.45 and $3.34 per share, respectively) (175,419) (312,111) - ---------------------------------------------------------------------------------------------- Total distributions to shareowners $ (3,497,974) $(7,943,907) - ---------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 7,874,791 $ 6,568,318 Reinvestment of distributions 3,248,369 6,984,889 Cost of shares repurchased (10,891,993) (18,267,425) - ---------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from Fund share transactions $ 231,167 $(4,714,218) - ---------------------------------------------------------------------------------------------- Net decrease in net assets $(14,225,919) $(9,544,091) NET ASSETS: Beginning of year 34,467,186 44,011,277 - ---------------------------------------------------------------------------------------------- End of year $ 20,241,267 $34,467,186 - ---------------------------------------------------------------------------------------------- Accumulated net investment income $ -- $ -- - ---------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 22 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 '08 Shares '08 Amount '07 Shares '07 Amount Class A Shares sold 691,874 $6,541,976 319,027 $ 4,976,275 Reinvestment of distributions 451,219 2,991,599 508,346 6,502,242 Less shares repurchased (926,983) (9,318,098) (1,124,050) (16,971,099) - ------------------------------------------------------------------------------------------------- Net increase (decrease) 216,110 $ 215,477 (296,677) $(5,492,582) ================================================================================================= Class B Shares sold 27,334 $ 263,380 21,304 $ 308,834 Reinvestment of distributions 14,670 86,712 14,778 174,108 Less shares repurchased (27,668) (274,475) (64,871) (944,971) - ------------------------------------------------------------------------------------------------- Net increase (decrease) 14,336 $ 75,617 (28,789) $ (462,029) ================================================================================================= Class C Shares sold 121,165 $1,069,435 89,156 $ 1,283,209 Reinvestment of distributions 29,448 170,058 26,690 308,539 Less shares repurchased (157,007) (1,299,420) (24,239) (350,360) - ------------------------------------------------------------------------------------------------- Net increase (decrease) (6,394) $ (59,927) 91,607 $ 1,241,388 ================================================================================================= Class R* Shares sold -- $ -- -- $ -- Reinvestment of distributions -- -- -- -- Less shares repurchased -- -- (69) (995) - ------------------------------------------------------------------------------------------------- Net decrease -- $ -- (69) $ (995) ================================================================================================= * Class R shares were liquidated on February 1, 2007. The accompanying notes are an integral part of these financial statements. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 23 Financial Highlights Year Ended Year Ended 12/31/08 12/31/07 Class A Net asset value, beginning of period $ 12.82 $ 15.00 - --------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations: Net investment income (loss) $ (0.00)(a) $ (0.01) Net realized and unrealized gain (loss) on investments (4.41) 1.17 - --------------------------------------------------------------------------------------------------------------- Net increase from investment operations $ (4.41) $ 1.16 Distributions to shareowners: Net investment income -- 0.00(a) Net realized gain (1.45) (3.34) - --------------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (5.86) $ (2.18) - --------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 6.96 $ 12.82 =============================================================================================================== Total return* (33.84)% 7.84% Ratio of net expenses to average net assets+ 1.75% 1.43% Ratio of net investment income (loss) to average net assets+ (0.01)% (0.08)% Portfolio turnover rate 19% 10% Net assets, end of period (in thousands) $ 19,011 $ 32,221 Ratios with no waiver of fees by PIM and no reduction for fees paid indirectly: Net expenses 1.75% 1.43% Net investment income (loss) (0.01)% (0.08)% Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 1.75% 1.42% Net investment income (loss) (0.01)% (0.07)% - --------------------------------------------------------------------------------------------------------------- Year Ended Year Ended Year Ended 12/31/06 12/31/05 12/31/04 (b) Class A Net asset value, beginning of period $ 19.22 $ 21.05 $ 28.21 - ------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations: Net investment income (loss) $ 0.01 $ 0.01 $ 0.19 Net realized and unrealized gain (loss) on investments 1.11 1.13 (0.13) - ------------------------------------------------------------------------------------------------------------------------------ Net increase from investment operations $ 1.12 $ 1.14 $ 0.06 Distributions to shareowners: Net investment income 0.00(a) 0.00(a) (0.18) Net realized gain (5.34) (2.97) (7.04) - ------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (4.22) $ (1.83) $ (7.16) - ------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 15.00 $ 19.22 $21.05 ============================================================================================================================== Total return* 5.93% 5.70% 0.25% Ratio of net expenses to average net assets+ 1.25% 1.25% 1.25% Ratio of net investment income (loss) to average net assets+ 0.06% 0.01% 0.58% Portfolio turnover rate 21% 3% 6% Net assets, end of period (in thousands) $42,169 $56,040 $40,568 Ratios with no waiver of fees by PIM and no reduction for fees paid indirectly: Net expenses 1.65% 1.59% 1.49% Net investment income (loss) 0.34% (0.35)% 0.34% Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 1.25% 1.25% 1.25% Net investment income (loss) 0.06% 0.01% 0.58% - ------------------------------------------------------------------------------------------------------------------------------ (a) Amount rounds to less than one cent per share. (b) Effective February 20, 2004, Pioneer Investment Management became the advisor. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 24 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Year Ended Year Ended 12/31/08 12/31/07 Class B Net asset value, beginning of period $ 11.80 $14.21 - --------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations: Net investment loss $ (0.10) $(0.19) Net realized and unrealized gain (loss) on investments (4.05) 1.12 - --------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (4.15) $ 0.93 Distributions to shareowners: Net realized gain (1.45) (3.34) - --------------------------------------------------------------------------------------------------------- Net decrease in net asset value $ (5.60) $(2.41) - --------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 6.20 $11.80 ========================================================================================================= Total return* (34.57)% 6.62% Ratio of net expenses to average net assets+ 2.95% 2.56% Ratio of net investment loss to average net assets+ (1.20)% (1.22)% Portfolio turnover rate 19% 10% Net assets, end of period (in thousands) $ 516 $ 814 Ratios with no waiver of fees by PIM and no reduction for fees paid indirectly: Net expenses 2.95% 2.56% Net investment loss (1.20)% (1.22)% Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 2.94% 2.54% Net investment loss (1.19)% (1.20)% - --------------------------------------------------------------------------------------------------------- Year Ended Year Ended 2/21/04 to 12/31/06 12/31/05 12/31/04 (a) Class B Net asset value, beginning of period $18.69 $20.81 $28.39 - ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations: Net investment loss $(0.11) $(0.08) $(0.11) Net realized and unrealized gain (loss) on investments 0.97 0.93 (0.43) - ----------------------------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 0.86 $ 0.85 $(0.54) Distributions to shareowners: Net realized gain (5.34) (2.97) (7.04) - ----------------------------------------------------------------------------------------------------------------------------- Net decrease in net asset value $(4.48) $(2.12) $(7.58) - ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $14.21 $18.69 $20.81 ============================================================================================================================= Total return* 4.69% 4.34% (1.88)%(b) Ratio of net expenses to average net assets+ 2.39% 2.34% 3.18%** Ratio of net investment loss to average net assets+ (1.02)% (1.02)% (0.78)%** Portfolio turnover rate 21% 3% 6% Net assets, end of period (in thousands) $1,389 $ 904 $ 52 Ratios with no waiver of fees by PIM and no reduction for fees paid indirectly: Net expenses 2.82% 2.67% 3.48%** Net investment loss (1.44)% (1.35)% (1.08)%** Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 2.37% 2.33% 3.18%** Net investment loss (1.00)% (1.01)% (0.78)%** - ----------------------------------------------------------------------------------------------------------------------------- (a) Class B shares were first publicly offered on February 21, 2004. (b) Not annualized. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 25 Financial Highlights (continued) Year Ended Year Ended 12/31/08 12/31/07 Class C Net asset value, beginning of period $ 11.58 $14.10 - ---------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations: Net investment loss $ (0.10) $(0.10) Net realized and unrealized gain (loss) on investments (3.95) 0.92 - ---------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (4.05) $ 0.82 Distributions to shareowners: Net realized gain (1.45) (3.34) - ---------------------------------------------------------------------------------------------------------- Net decrease in net asset value $ (5.50) $(2.52) - ---------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 6.08 $11.58 ========================================================================================================== Total return* (34.35)% 5.89% Ratio of net expenses to average net assets+ 2.72% 2.85% Ratio of net investment loss to average net assets+ (0.98)% (1.40)% Portfolio turnover rate 19% 10% Net assets, end of period (in thousands) $ 714 $1,432 Ratios with no waiver of fees by PIM and no reduction for fees paid indirectly: Net expenses 2.72% 2.85% Net investment loss (0.98)% (1.40)% Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 2.71% 2.83% Net investment loss (0.97)% (1.38)% - ---------------------------------------------------------------------------------------------------------- Year Ended Year Ended 2/21/04 to 12/31/06 12/31/05 12/31/04 (a) Class C Net asset value, beginning of period $18.59 $20.69 $28.39 - ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations: Net investment loss $(0.13) $(0.07) $(0.09) Net realized and unrealized gain (loss) on investments 0.98 0.94 (0.57) - ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 0.85 $ 0.87 $(0.66) Distributions to shareowners: Net realized gain (5.34) (2.97) (7.04) - ------------------------------------------------------------------------------------------------------------------------ Net decrease in net asset value $(4.49) $(2.10) $(7.70) - ------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $14.10 $18.59 $20.69 ======================================================================================================================== Total return* 4.64% 4.44% (2.30)%(b) Ratio of net expenses to average net assets+ 2.53% 2.32% 3.80%** Ratio of net investment loss to average net assets+ (1.20)% (0.95)% (1.36)%** Portfolio turnover rate 21% 3% 6% Net assets, end of period (in thousands) $ 453 $ 406 $ 24 Ratios with no waiver of fees by PIM and no reduction for fees paid indirectly: Net expenses 2.93% 2.66% 4.11%** Net investment loss (1.60)% (1.29)% (1.68)%** Ratios with waiver of fees by PIM and reduction for fees paid indirectly: Net expenses 2.51% 2.32% 3.80%** Net investment loss (1.18)% (0.95)% (1.36)%** - ------------------------------------------------------------------------------------------------------------------------ (a) Class C shares were first publicly offered on February 21, 2004. (b) Not annualized. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 26 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Notes to Financial Statements | 12/31/08 1. Organization and Significant Accounting Policies Pioneer Growth Leaders Fund (the Fund), formerly known as Pioneer Papp Stock Fund, is one of seven series of portfolios comprising Pioneer Series Trust II (the Trust), a Delaware statutory trust registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The investment objective of the Fund is long-term capital growth. The Fund offers three classes of shares -- Class A, Class B, and Class C shares. Class B and Class C shares were first publicly offered on February 21, 2004. Class R shares ceased operations on February 1, 2007. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Share classes have exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gains or losses on investments during the reporting year. Actual results could differ from those estimates. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectus contains unaudited information regarding the Fund's principal risks. Please refer to this document when considering the Fund's principal risks. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 27 The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry: A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. In computing the net asset value, securities are valued at the last sale price on the principal exchange where they are traded. Securities that have not traded on the date of valuation, or securities for which sale prices are not generally reported, are valued at the mean between the last bid and asked prices. Securities for which market prices and/or quotations are not readily available are valued using fair value methods pursuant to procedures adopted by the Board of Trustees. Trading in foreign securities is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. The Fund may also use fair value methods to value a security, including a non-U.S. security, when the closing market price on the principal exchange where the security is traded no longer reflects the value of the security. At December 31, 2008, there were no securities that were valued using fair value methods. Temporary cash investments are valued at amortized cost which approximates market value. Dividend income is recorded on the ex-dividend date except that certain dividends from foreign securities where the ex-dividend date may have passed are recorded as soon as the Fund becomes aware of the ex-dividend data in the exercise of reasonable diligence. Interest income is recorded on the accrual basis. Dividend and interest income are reported net of unrecoverable foreign taxes withheld at the applicable country rates. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. B. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. Tax years for the prior three fiscal years remain subject to examination by tax authorities. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Fund's distributions may be 28 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 shown in the accompanying financial statements as from or in excess of net investment income or as from net realized gain on investment transactions, or as from paid-in capital, depending on the type of book/tax differences that may exist. The Fund has elected to defer approximately $25,505 of capital losses recognized between November 1, 2008 and December 31, 2008 to its fiscal year ending December 31, 2009. At December 31, 2008, the Fund has reclassified $21,052 to decrease paid in capital, $20,960 to decrease accumulated net investment loss and $92 to decrease accumulated net realized loss on investments to reflect permanent book/tax differences. The reclassification has no impact on the net asset value of the Fund and presents the Fund's capital accounts on a tax basis. The tax character of distributions paid during the years ended December 31, 2008 and December 31, 2007 was as follows: 2008 2007 Distributions paid from: Ordinary income $ -- $ 7,732 Long-term capital gain 3,497,974 7,936,175 - ------------------------------------------------------------------------------ Total $ 3,497,974 $7,943,907 ============================================================================== The following shows the components of distributable earnings on a federal income tax basis at December 31, 2008: 2008 Distributable earnings: Post-October loss deferred $ (25,505) Unrealized appreciation 4,860,880 - ------------------------------------------------------------------------------ Total $4,835,375 ============================================================================== C. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned approximately $2,520 in underwriting commissions on the sale of Class A shares during the year ended December 31, 2008. D. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on the respective percentage of adjusted net assets at the beginning of the day. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 29 Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class B, and Class C shares of the Fund, respectively (see Note 4). Shareowners of each class participate in all expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services, which are allocated based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner and at the same time, except that Class A, Class B, and Class C shares can bear different transfer agent and distribution expense rates. E. Securities Lending The Fund lends securities in its portfolio to certain broker-dealers or other institutional investors. When entering into a securities loan transaction, the Fund typically receives cash collateral from the borrower equal to at least the value of the securities loaned, which is invested in temporary cash investments. Credit Suisse, New York Branch, as the Fund's security lending agent, manages the Fund's securities lending collateral. The income earned on the investment of collateral is shared with the borrower and the lending agent in payment of any rebate due to the borrower with respect to the securities loan, and in compensation for the lending agent's services to the Fund. The Fund also continues to receive interest or payments in lieu of dividends on the securities loaned. Gain or loss on the value of the loaned securities that may occur during the term of the loan will be for the account of the Fund. The amount of the collateral is required to be adjusted daily to reflect any price fluctuation in the value of the loaned securities. The Fund has the right, under the lending agreement, to terminate the loan and recover the securities from the borrower with prior notice. The Fund will be required to return the cash collateral to the borrower and could suffer a loss if the value of the collateral, as invested, has declined. 2. Management Agreement Pioneer Investment Management, Inc. (PIM), a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at the annual rate equal to 0.75% of the Fund's average daily net assets up to $1 billion; and 0.70% on assets over $1 billion. For the year ended December 31, 2008, the effective management fee (net of waivers and/or assumption of expenses) was equivalent to a rate of 0.75% of the Fund's average net assets. 30 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 PIM, and not the Fund, pays a portion of the fee it receives from the Fund to L. Roy Papp & Associates LLP (Papp) as compensation for its sub-advisory services to the Fund. In addition, under the management and administrative agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $424 in management fees, administrative costs and certain other fees payable to PIM at December 31, 2008. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimbursed PIMSS for out-of-pocket expenses related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended December 31, 2008, such out-of-pocket expenses by class of shares were as follows: Shareholder Communications: Class A $18,463 Class B 858 - ------------------------------------------------------------------------------- Total $19,321 =============================================================================== Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $10,192 in transfer agent fees and shareholder communications expenses payable to PIMSS at December 31, 2008. 4. Distribution and Service Plans The Fund adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A, Class B and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund pays PFD 1.00% of the average daily net assets attributable to Class B and Class C shares. The fee for Class B and Class C shares consists of a 0.25% service fee and 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class B shares and Class C shares. Prior to February 1, 2008, PFD was reimbursed under the Distribution Plan for distribution expenses in an amount of up to 0.25% of the average daily net assets attributable to Class A shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $162 in distribution fees payable to PFD at December 31, 2008. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 31 In addition, redemptions of each class of shares may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 18 months of purchase. Class B shares that are redeemed within five years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00%, based on the lower of cost or market value of shares being redeemed. Proceeds from the CDSCs are paid to PFD. For the year ended December 31, 2008, CDSCs in the amount of $1,711 were paid to PFD. 5. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS resulting in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended December 31, 2008, the Fund's expenses were reduced by $1,201 under such arrangements. 6. New Pronouncement In March 2008, Statement of Financial Accounting Standards No. 161, Disclosures about Derivative Instruments and Hedging Activities ("SFAS 161"), was issued and is effective for fiscal years beginning after November 15, 2008. SFAS 161 requires enhanced disclosures about an entity's derivative and hedging activities. Management is currently evaluating the impact the adoption of SFAS 161 will have on the Fund's financial statement disclosures. 32 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust II and the Shareowners of Pioneer Growth Leaders Fund: - -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer Growth Leaders Fund, one of the series constituting Pioneer Series Trust II (the "Trust"), including the schedule of investments, as of December 31, 2008, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended and financial highlights for each of the periods indicated therein. These financial statements and financial highlights are the responsibility of the Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Trust's internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of December 31, 2008, by correspondence with the custodian and brokers. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer Growth Leaders Fund of the Pioneer Series Trust II at December 31, 2008, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended and financial highlights for each of the periods indicated therein, in conformity with U.S. generally accepted accounting principles. /s/ Ernst & Young LLP Boston, Massachusetts February 18, 2009 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 33 Approval of Investment Sub-Advisory Agreement (unaudited) Pioneer Investment Management, Inc. (PIM) serves as the Fund's investment adviser pursuant to an investment advisory agreement between PIM and the Fund. PIM has retained L. Roy Papp & Associates, Inc. to serve as the sub-adviser to the Fund pursuant to a sub-advisory agreement between PIM and the sub-adviser. At a meeting held on January 8, 2008, the Trustees of the Fund approved an amended and restated investment advisory agreement between the Fund and PIM. Shareholders of the Fund approved the amended and restated investment advisory agreement on May 13, 2008. The material factors and conclusions with respect thereto that formed the basis for the Trustees' approval of the amended and restated investment advisory agreement are included in the Fund's semi-annual report for the period ended June 30, 2008. At a meeting held on November 11, 2008, based on their evaluation of the information provided by PIM and the sub-adviser, the Trustees of the Fund, including the independent Trustees voting separately, unanimously approved the continuation of the sub-advisory agreement for the Fund for another year. In considering the continuation of the sub-advisory agreement, the Trustees considered various factors that they determined were relevant, including the factors described below. The Trustees did not identify any single factor as the controlling factor in determining to approve the continuation of the sub- advisory agreement. Nature, Extent and Quality of Services The Trustees considered the nature, extent and quality of the services provided to the Fund by the sub-adviser, taking into account the investment objective and strategy of the Fund and the information related to the Fund provided to the Trustees at each quarterly meeting. The Trustees reviewed the terms of the sub-advisory agreement. The Trustees also reviewed the sub-adviser's investment approach for the Fund and its research process. The Trustees considered the resources of the sub-adviser and the personnel of the sub-adviser who provide investment management services to the Fund. Based on these considerations, the Trustees concluded that the nature, extent and quality of services provided by the sub-adviser to the Fund were satisfactory and consistent with the terms of the sub-advisory agreement. Performance of the Fund The Trustees considered the performance results of the Fund over various time periods. They reviewed information comparing the Fund's performance with the average performance of its peer group of funds as classified by 34 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Morningstar, Inc. (Morningstar), an independent provider of investment company data, and with the performance of the Fund's benchmark index. The Trustees considered that the Fund's annualized total return was in the third quintile of its Morningstar category for the one year period ended June 30, 2008 and that the Fund's annualized total return was in the fifth quintile of its Morningstar category for the three year period ended June 30, 2008. (In all quintile rankings referred to throughout this disclosure, first quintile is most favorable to the Fund's shareowners. Thus, highest relative performance would be first quintile and lowest relative expenses would also be first quintile.) The Trustees agreed that they would continue to monitor the performance of the Fund closely. Sub-advisory Fee and Expenses The Trustees considered the fees payable to the sub-adviser under the sub- advisory agreement. They also considered that PIM, not the Fund, paid the sub-adviser out of the management fees paid to PIM under the investment advisory agreement. The Trustees considered information regarding the management fees and expenses of the Fund in comparison to the management fees of its peer group of funds as classified by Morningstar and the expense ratios of a peer group of funds selected on the basis of criteria determined by the independent Trustees for this purpose using data provided by Strategic Insight Mutual Fund Research and Consulting, LLC (Strategic Insight), an independent third party. The Trustees considered that the Fund's management fee for the twelve months ended June 30, 2008 was in the third quintile relative to the management fees paid by other funds in its peer group Morningstar category for the comparable period. The Trustees also considered that the Fund's expense ratio for the twelve months ended June 30, 2008 was in the fourth quintile relative to its Strategic Insight peer group. The Trustees also reviewed the advisory fees charged by the sub-adviser to its separate account clients with investment strategies that were similar to the Fund. The Trustees noted that the fee rates for those separate accounts generally were higher than the sub-advisory fees paid to the sub-adviser with respect to the Fund. The Trustees concluded that the sub-advisory fee payable by PIM to the sub- adviser of the Fund was reasonable in relation to the nature and quality of services provided by the sub-adviser. The Trustees also concluded that the Fund's expense ratio was reasonable, taking into account the quality of services provided by PIM and the sub-adviser. Profitability The Trustees considered information provided by PIM regarding the profitability of PIM with respect to the advisory services provided by PIM to the Fund, including the methodology used by PIM in allocating certain of its costs Pioneer Growth Leaders Fund | Annual Report | 12/31/08 35 to the management of the Fund. They also considered PIM's profit margin in connection with the overall operation of the Fund. The Trustees further considered the sub-advisory fees received by the sub-adviser with respect to the Fund and the percentage that such fees represented of the sub-adviser's overall revenues (for the 12-month period ended December 31, 2007). They also reviewed the financial results realized by PIM and its affiliates from non-fund businesses. The Trustees considered the profit margins with respect to the Fund in comparison to the limited industry data available and noted that the profitability of any adviser was affected by numerous factors, including its organizational structure and method for allocating expenses. The Trustees recognized that each of PIM and the sub-adviser should be entitled to earn a reasonable level of profit for the services provided to the Fund. The Trustees concluded that the profit margins with respect to the management of the Fund were not unreasonable. Economies of Scale The Trustees considered the economies of scale with respect to the management of the Fund, whether the Fund had appropriately benefited from any economies of scale, and whether there was potential for realization of any further economies of scale. The Trustees concluded that, because of the breakpoints in the management and sub-advisory fee schedules and the reduced fee rates above certain asset levels, any perceived or potential economies of scale would be shared with the Fund. Other Benefits The Trustees considered that the sub-adviser reported that it does not receive any other benefits from its relationship with the Fund. Conclusion After consideration of the factors described above as well as other factors, the Trustees, including all of the independent Trustees, concluded that the sub-advisory agreement for the Fund between PIM and the sub-adviser, including the fees payable thereunder, was fair and reasonable and voted to approve the continuation of the sub-advisory agreement for the Fund. 36 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Ernst & Young LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at www.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. Trustees and Officers The Board of Trustees provides broad supervision over the Fund's affairs. The officers of the Fund are responsible for the Fund's operations. The Trustees and officers are listed below, together with their principal occupations during the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a trustee of each of the 76 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 37 Interested Trustees Position Held Length of Service Name and Age with the Fund and Term of Office John F. Cogan, Jr. (82)* Chairman of the Board, Trustee since 2003. Trustee and President Serves until a successor trustee is elected or earlier retirement or removal. - ------------------------------------------------------------------------------- Daniel K. Kingsbury (50)* Trustee and Executive Trustee since 2008. Vice President Serves until a successor trustee is elected or earlier retirement or removal. - ------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Trustee John F. Cogan, Jr. (82)* Deputy Chairman and a Director of Pioneer Global Asset None Management S.p.A. ("PGAM"); Non-Executive Chairman and a Director of Pioneer Investment Management USA Inc. ("PIM-USA"); Chairman and a Director of Pioneer; Chairman and Director of Pioneer Institutional Asset Management, Inc. (since 2006); Director of Pioneer Alternative Investment Management Limited (Dublin); President and a Director of Pioneer Alternative Investment Management (Bermuda) Limited and affiliated funds; Director of PIOGLOBAL Real Estate Investment Fund (Russia) (until June 2006); Director of Nano-C, Inc. (since 2003); Director of Cole Management Inc. (since 2004); Director of Fiduciary Counseling, Inc.; President and Director of Pioneer Funds Distributor, Inc. ("PFD") (until May 2006); President of all of the Pioneer Funds; and Of Counsel, Wilmer Cutler Pickering Hale and Dorr LLP - --------------------------------------------------------------------------------------------------------------------- Daniel K. Kingsbury (50)* Director, CEO and President of Pioneer Investment Management None USA Inc. (since February 2007); Director and President of Pioneer Investment Management, Inc. and Pioneer Institutional Asset Management, Inc. (since February 2007); Executive Vice President of all of the Pioneer Funds (since March 2007); Director of Pioneer Global Asset Management S.p.A. (since April 2007); Head of New Markets Division, Pioneer Global Asset Management S.p.A. (2000 - 2007) - --------------------------------------------------------------------------------------------------------------------- * Mr. Cogan and Mr. Kingsbury are Interested Trustees because they are officers or directors of the Fund's investment adviser and certain of its affiliates. 38 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Independent Trustees Position Held Length of Service Name and Age with the Fund and Term of Office David R. Bock (65) Trustee Trustee since 2005. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------- Mary K. Bush (60) Trustee Trustee since 2003. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Trustee David R. Bock (65) Executive Vice President and Chief Financial Officer, I-trax, Inc. Director of Enterprise (publicly traded health care services company) (2004 - 2007); Community Investment, Inc. Partner, Federal City Capital Advisors (boutique merchant bank) (privately-held affordable (1997 to 2004 and 2008 - present); and Executive Vice housing finance company); President and Chief Financial Officer, Pedestal Inc. (internet- and Director of New York based mortgage trading company) (2000 - 2002) Mortgage Trust (publicly traded mortgage REIT) - ------------------------------------------------------------------------------------------------------------------------- Mary K. Bush (60) President, Bush International, LLC (international financial Director of Marriott advisory firm) International, Inc.; Director of Discover Financial Services (credit card issuer and electronic payment services); Director of Briggs & Stratton Co. (engine manufacturer); Director of UAL Corporation (airline holding company); Director of Mantech International Corporation (national security, defense, and intelligence technology firm); and Member, Board of Governors, Investment Company Institute - ------------------------------------------------------------------------------------------------------------------------- Pioneer Growth Leaders Fund | Annual Report | 12/31/08 39 Independent Trustees (continued) Position Held Length of Service Name and Age with the Fund and Term of Office Benjamin M. Friedman (64) Trustee Trustee since 2008. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------------- Margaret B.W. Graham (61) Trustee Trustee since 2003. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------------- Thomas J. Perna (58) Trustee Trustee since 2006. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------------- Marguerite A. Piret (60) Trustee Trustee since 2003. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------------- Stephen K. West (80) Trustee Trustee since 2008. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Trustee Benjamin M. Friedman (64) Professor, Harvard University Trustee, Mellon Institutional Funds Investment Trust and Mellon Institutional Funds Master Portfolio (oversees 17 portfolios in fund complex) - ------------------------------------------------------------------------------------------------------------------------------- Margaret B.W. Graham (61) Founding Director, Vice President and Corporate Secretary, The None Winthrop Group, Inc. (consulting firm); and Desautels Faculty of Management, McGill University - ------------------------------------------------------------------------------------------------------------------------------- Thomas J. Perna (58) Chief Executive Officer, Quadriserv, Inc. (technology products for None securities lending industry) (2008 - present); Private investor (2004 - 2008); and Senior Executive Vice President, The Bank of New York (financial and securities services) (1986 - 2004) - ------------------------------------------------------------------------------------------------------------------------------- Marguerite A. Piret (60) President and Chief Executive Officer, Newbury, Piret & Company, Director of New America Inc. (investment banking firm) High Income Fund, Inc. (closed-end investment company) - ------------------------------------------------------------------------------------------------------------------------------- Stephen K. West (80) Senior Counsel, Sullivan & Cromwell LLP (law firm) Director, The Swiss Helvetia Fund, Inc. (closed-end investment company) - ------------------------------------------------------------------------------------------------------------------------------- 40 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 Fund Officers Position Held Length of Service Name and Age with the Fund and Term of Office Dorothy E. Bourassa (60) Secretary Since 2003. Serves at the discretion of the Board. - -------------------------------------------------------------------------- Christopher J. Kelley (44) Assistant Secretary Since 2003. Serves at the discretion of the Board. - -------------------------------------------------------------------------- Mark E. Bradley (49) Treasurer Since 2008. Serves at the discretion of the Board. - -------------------------------------------------------------------------- Luis I. Presutti (43) Assistant Treasurer Since 2003. Serves at the discretion of the Board. - -------------------------------------------------------------------------- Gary Sullivan (50) Assistant Treasurer Since 2003. Serves at the discretion of the Board. - -------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Officer Dorothy E. Bourassa (60) Secretary of PIM-USA; Senior Vice President - Legal of Pioneer; None Secretary/Clerk of most of PIM-USA's subsidiaries; and Secretary of all of the Pioneer Funds since September 2003 (Assistant Secretary from November 2000 to September 2003) - ---------------------------------------------------------------------------------------------------------------------- Christopher J. Kelley (44) Associate General Counsel of Pioneer since January 2008 and None Assistant Secretary of all of the Pioneer Funds since September 2003; Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 - ---------------------------------------------------------------------------------------------------------------------- Mark E. Bradley (49) Vice President - Fund Accounting, Administration and None Controllership Services of Pioneer; and Treasurer of all of the Pioneer Funds since March 2008; Deputy Treasurer of Pioneer from March 2004 to February 2008; Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008; and Treasurer and Senior Vice President, CDC IXIS Asset Management Services from 2002 to 2003 - ---------------------------------------------------------------------------------------------------------------------- Luis I. Presutti (43) Assistant Vice President - Fund Accounting, Administration and None Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ---------------------------------------------------------------------------------------------------------------------- Gary Sullivan (50) Fund Accounting Manager - Fund Accounting, Administration and None Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ---------------------------------------------------------------------------------------------------------------------- Pioneer Growth Leaders Fund | Annual Report | 12/31/08 41 Fund Officers (continued) Position Held Length of Service Name and Age with the Fund and Term of Office Katherine Kim Sullivan (35) Assistant Treasurer Since 2003. Serves at the discretion of the Board. - -------------------------------------------------------------------------------- Teri W. Anderholm (49) Chief Compliance Officer Since 2007. Serves at the discretion of the Board. - -------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Officer Katherine Kim Sullivan (35) Fund Administration Manager - Fund Accounting, Administration None and Controllership Services since June 2003 and Assistant Treasurer of all of the Pioneer Funds since September 2003; Assistant Vice President - Mutual Fund Operations of State Street Corporation from June 2002 to June 2003 (formerly Deutsche Bank Asset Management) - --------------------------------------------------------------------------------------------------------------------- Teri W. Anderholm (49) Chief Compliance Officer of Pioneer since December 2006 and None of all the Pioneer Funds since January 2007; Vice President and Compliance Officer, MFS Investment Management (August 2005 to December 2006); Consultant, Fidelity Investments (February 2005 to July 2005); Independent Consultant (July 1997 to February 2005) - --------------------------------------------------------------------------------------------------------------------- 42 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 This page for your notes. Pioneer Growth Leaders Fund | Annual Report | 12/31/08 43 This page for your notes. 44 Pioneer Growth Leaders Fund | Annual Report | 12/31/08 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: - -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Telecommunications Device for the Deaf (TDD) 1-800-225-1997 Write to us: - -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: pioneerinvestments.com This report must be accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. Pioneer Growth Opportunities Fund - -------------------------------------------------------------------------------- Annual Report | December 31, 2008 - -------------------------------------------------------------------------------- Ticker Symbols: Class A PGOFX Class B GOFBX Class C GOFCX Class Y GROYX [LOGO] PIONEER Investments(R) visit us: pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 10 Comparing Ongoing Fund Expenses 14 Schedule of Investments 16 Financial Statements 25 Notes to Financial Statements 33 Report of Independent Registered Public Accounting Firm 40 Trustees, Officers and Service Providers 41 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 1 President's Letter Dear Shareowner, Stock and bond markets around the globe this year have experienced one of their most tumultuous periods in history. Investors have witnessed volatility of a magnitude that many have never before seen. Distance often provides the best vantage point for perspective. Still, we believe that the benefits of basic investment principles that have stood the test of time -- even in the midst of market turmoil -- cannot be underestimated. First, invest for the long term. The founder of Pioneer Investments, Philip L. Carret, began his investment career during the 1920s. One lesson he learned is that while great prosperity affords an advantageous time for selling stocks, extreme economic slumps can create opportunities for purchase. Indeed, many of our portfolio managers, who follow the value-conscious investing approach of our founder, are looking at recent market conditions as an opportunity to buy companies whose shares we believe have been unjustifiably beaten down by indiscriminate selling, but that we have identified as having strong prospects over time. While investors may be facing a sustained market downturn, we continue to believe that patience, along with staying invested in the market, are important considerations for long-term investors. A second principle is to stay diversified across different types of investments. The global scope of the current market weakness poses challenges for this basic investment axiom. But the turbulence makes now a good time to reassess your portfolio and make sure that your investments continue to meet your needs. We believe you should work closely with your financial advisor to find the mix of stocks, bonds and money market assets that is best aligned to your particular risk tolerance and investment objective. As the investment markets sort through the continuing crisis in the financial industry, we are staying focused on the fundamentals and risk management. With more than 80 years of experience behind us, we have learned how to navigate turbulent markets. At Pioneer Investments, risk management has always been a critical part of our culture -- not just during periods of extraordinary volatility. Our investment process is based on fundamental research, quantitative analysis and active portfolio management. This three-pillared process, which we apply to each of our portfolios, is supported by an integrated team approach and is designed to carefully balance risk and reward. While we 2 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 see potential chances for making money in many corners of the market, it takes research and experience to separate solid investment opportunities from speculation. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at www.pioneerinvestments.com. Thank you for investing with Pioneer. Respectfully, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 3 Portfolio Management Discussion | 12/31/08 In the following interview, Brian Stack, portfolio manager of Pioneer Growth Opportunities Fund, discusses the factors that influenced performance during the 12-month period ended December 31, 2008. Q How would you characterize the performance of the U.S. equity market in 2008? A The past year was extremely difficult for investors, as the U.S. market endured one of the worst years in its history. The leading cause of the downturn was the ongoing fallout from the housing crisis, which led to a virtual shutdown of the credit markets and the collapse of numerous financial institutions throughout the United States and Europe. These events, taken together, weighed heavily on global economic growth and severely depressed the corporate earnings outlook for 2008 and 2009. With this as the backdrop, the Fund's benchmark, the Russell 2000 Growth Index, returned -38.54%. The bulk of the decline occurred in the September - November interval, during which the index declined by nearly 40% amid the intensification of the financial meltdown. While performance improved somewhat in December in reaction to the U.S. government's extraordinary efforts to alleviate the effects of the crisis, the U.S. market nonetheless finished 2008 deeply in the red. Q How did the Fund perform in this environment over the 12-month period ended December 31, 2008? A As would be expected at such a challenging time for the markets, the Fund produced a sharply negative absolute return. Its Class A shares returned -35.39% at net asset value during the 12-month period ended December 31, 2008, outperforming the Russell 2000 Growth Index. Over the same 12-month period, the average return for the 603 Small Cap Growth Funds tracked by Lipper, Inc. was -42.10%. The Fund's 12-month results reflect the performance of two management teams. The current team took over on September 2, 2008. While we were disappointed with the Fund's overall one-year performance, we are encouraged that our management style did help to improve the Fund's performance relative to its benchmark by year-end. The Fund's full-year performance was helped by stock selection in the consumer discretionary and health care sectors, but selection in industrials and energy detracted. Among the major contributors were the medical device maker Thoratec, the food supplier American Italian Pasta, and the drug 4 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 maker Cubist Pharmaceuticals. Key detractors included the industrial filtration supplier Polypore International, the coal miner Alpha Natural Resources, and the investment manager Affiliated Managers Group. With the exception of Alpha Natural Resources and Affiliated Managers Group, all stocks remained in the portfolio as of December 31. Q How would you describe your investment approach? A When we took over as managers of the Fund in early September, we did so with a mandate to apply a purely fundamental, bottom-up stock-picking strategy. In contrast, the previous team managed the Fund using a hybrid approach that employed both quantitative screens and fundamental research. Our research-based approach employs the style known as "GARP," which stands for "growth at a reasonable price." We look for companies that are growing earnings faster than the market, but we also are sensitive to valuations. We strive to take an independent-minded, longer-term view when considering candidates for inclusion in the portfolio. We are attracted to companies whose stock prices do not fairly reflect their underlying growth potential and risk profile. These inefficiently-priced stocks typically fall into one of three categories: unseasoned companies that have not yet drawn the widespread appreciation of investors, companies that are known but not well understood by investors, and companies whose short-term difficulties may have been overly discounted into their share price. We eliminate stocks from the portfolio when a) we feel the share price fully reflects the company's fundamental outlook, b) our fundamental analysis changes or is disconfirmed by subsequent events, or c) a superior investment idea is found. We would expect to maintain 80 to 100 holdings in the portfolio on average, a reduction from the previous number of Fund holdings, which averaged about 200 or more individual positions. Q What are some good examples of the type of companies in which you invest? A We look for companies that have exceptional secular or cyclical growth prospects. "Secular" growers typically offer unique and innovative products addressing a poorly served market need, while "cyclical" growers are usually more mature companies that can still generate growth due to imbalances in the supply/demand fundamentals that characterize their industry. Typically, we would expect the portfolio to be more heavily exposed to companies in the secular growth category. One such company is Priceline. Although the travel industry is experiencing severe weakness, Priceline is expanding its geographic footprint into Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 5 Europe, which represents a relatively fragmented marketplace for travel-related services. In the United States, the company's "name your own price" approach is allowing hoteliers, airlines and auto rental companies to sell excess inventory. Priceline is gaining market share, and we believe the stock, which gained ground in the fourth quarter of 2008, can continue to perform well in 2009. Another example of the type of company in which we invest is Grand Canyon Education, which provides online degree programs in education, business and healthcare. For-profit education companies are capturing a growing share of the market for post-secondary education. They also tend to be countercyclical (meaning they can do well when the economy weakens) since consumers frequently return to school to develop new skills and credentials when the job market is soft. American Italian Pasta (AIPC), a supplier of dry pasta products to retailers and institutional food service providers, also helps illustrate our investment style. We see AIPC as a good business whose stock was unfairly discounted due to transitional difficulties. With new management in place and an accounting controversy resolved, the company is prospering as consumers "trade down" to less expensive fare and as retailers devote greater shelf space to more profitable private label products. It should be evident from the stocks mentioned above that the Fund's portfolio can be fairly eclectic. In our view, this helps illustrate the benefit of a pure bottom-up approach. Without being constrained by the need to maintain certain sector weightings, we are able to construct a portfolio of what we believe are the very best growth opportunities in the small-cap asset class. Q What are your thoughts on the year ahead? A Expecting that the economic backdrop will remain challenging in 2009, we are not counting on macroeconomic tailwinds as a driver of the Fund's performance during the year ahead. We believe, however, that recent events have created opportunities for proficient stock-pickers. According to Merrill Lynch, 2008 brought the worst performance for small-cap stocks since 1973. The market action resulted in a massive selloff process, where virtually all stocks plunged without regard for company-specific fundamentals. This has created what we feel is a rare opportunity to purchase compelling, bottom-up growth stories at very attractive valuations. Finding such stocks will be the focal point of our efforts during the year ahead. Note to Shareholders: Brian Stack became portfolio manager of the Pioneer Growth Opportunities Fund on September 2, 2008. The Fund's previous co-managers were Peter Wiley and Diego Franzin. Mr. Wiley remains a member of the U.S. Small Cap Growth Team and Portfolio Manager of Pioneer Small Cap Value Fund. Mr. Franzin was recently promoted to Head of Global Quantitative Research. 6 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Please refer to the Schedule of Investments on pages 16-24 for a full listing of Fund securities. Investments in small companies may offer the potential for higher returns, but are also subject to greater short-term price fluctuations than larger, more established companies. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These opinions should not be relied upon for any other purposes. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 7 Portfolio Summary | 12/31/08 Portfolio Diversification - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] U.S. Common Stocks 78.6% Temporary Cash Investments 18.7% Depositary Receipts for International Stocks 1.5% Exchange Traded Funds 1.2% Sector Distribution - -------------------------------------------------------------------------------- (As a percentage of equity holdings) [THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL] Health Care 25.2% Information Technology 23.1% Industrials 17.2% Consumer Discretionary 11.1% Energy 8.2% Consumer Staples 5.3% Materials 4.0% Financials 4.0% Utilities 1.9% 10 Largest Holdings - -------------------------------------------------------------------------------- (As a percentage of equity holdings)* 1. Quanta Services, Inc. * 2.39% 2. Exterran Holdings, Inc. 2.33 3. Priceline.com, Inc. 2.23 4. KBR, Inc. 2.03 5. Advanced Magnetics, Inc. 2.00 6. Comscore, Inc. 1.97 7. Comstock Resources, Inc. 1.95 8. American Italian Pasta Co. 1.88 9. Polypore International, Inc 1.86 10. Grand Canyon Education, Inc. 1.81 * This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 8 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Prices and Distributions | 12/31/08 Net Asset Value per Share - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Class 12/31/08 12/31/07 - -------------------------------------------------------------------------------- A $ 15.95 $ 25.24 - -------------------------------------------------------------------------------- B $ 13.90 $ 22.42 - -------------------------------------------------------------------------------- C $ 14.02 $ 22.57 - -------------------------------------------------------------------------------- Y $ 16.26 $ 25.59 - -------------------------------------------------------------------------------- Distributions per Share: 1/1/08-12/31/08 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Net Investment Short-Term Long-Term Class Income Capital Gains Capital Gains - -------------------------------------------------------------------------------- A $ -- $ -- $ 0.3110 - -------------------------------------------------------------------------------- B $ -- $ -- $ 0.3110 - -------------------------------------------------------------------------------- C $ -- $ -- $ 0.3110 - -------------------------------------------------------------------------------- Y $ -- $ -- $ 0.3110 - -------------------------------------------------------------------------------- Index Definitions - -------------------------------------------------------------------------------- The Russell 2000 Growth Index measures the performance of U.S. small-cap growth stocks. Index returns are calculated monthly, assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, charges or expenses. You cannot invest directly in an index. The index defined here pertains to the "Value of $10,000 Investment" charts on pages 10-13. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 9 Performance Update | 12/31/08 Class A Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Growth Opportunities Fund at public offering price, compared to that of the Russell 2000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ------------------------------------------------------------------ Net Asset Public Offering Period Value (NAV) Price (POP) - ------------------------------------------------------------------ 10 Years -1.11% -1.67% 5 Years -3.62 -4.76 1 Year -35.39 -39.11 - ------------------------------------------------------------------ Expense Ratio (Per prospectus dated May 1, 2008) - ------------------------------------------------------------------ Gross Net - ------------------------------------------------------------------ 1.20% 1.20% - ------------------------------------------------------------------ [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Growth Opportunities Russell 2000 Fund Growth Index 12/98 9,425 10,000 9,679 14,309 12/00 9,241 11,100 11,243 10,075 12/02 7,077 7,026 10,167 10,437 12/04 12,427 11,931 12,994 12,426 12/06 13,615 14,084 13,084 15,077 12/08 8,454 9,266 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Pioneer Growth Opportunities Fund was created through the reorganization of predecessor Safeco Growth Opportunities Fund on December 10, 2004. The performance of Class A shares of the Fund prior to December 10, 2004 is the performance of the predecessor fund's Class A shares, which has been restated to reflect differences in any applicable sales charges (but not differences in expenses). If all the expenses of the Fund were reflected, the performance would be lower. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds and can be rescinded at any time. See the prospectus and financial statements for complete details. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 10 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Class B Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Growth Opportunities Fund, compared to that of the Russell 2000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- 10 Years -2.01% -2.01% 5 Years -4.69 -4.69 1 Year -36.41 -38.89 - ---------------------------------------------------------------- Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 2.43% 2.43% - ---------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Growth Opportunities Russell 2000 Fund Growth Index 12/98 10,000 10,000 10,162 14,309 12/00 9,644 11,100 11,648 10,075 12/02 7,276 7,026 10,378 10,437 12/04 12,580 11,931 13,030 12,426 12/06 13,518 14,084 12,834 15,077 12/08 8,161 9,266 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If Redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). Class B shares reflect the deduction of the maximum applicable CDSC. The maximum CDSC is 4.0% and declines over five years. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Pioneer Growth Opportunities Fund was created through the reorganization of predecessor Safeco Growth Opportunities Fund on December 10, 2004. The performance of Class B shares of the Fund prior to December 10, 2004 is the performance of the predecessor fund's Class B shares, which has been restated to reflect differences in any applicable sales charges (but not differences in expenses). If all the expenses of the Fund were reflected, the performance would be lower. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds and can be rescinded at any time. See the prospectus and financial statements for complete details. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 11 Performance Update | 12/31/08 Class C Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Growth Opportunities Fund, compared to that of the Russell 2000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- Life-of-Class (4/30/00) -2.80% -2.80% 5 Years -4.56 -4.56 1 Year -36.30 -36.30 - ---------------------------------------------------------------- Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 2.25% 2.25% - ---------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Growth Opportunities Russell 2000 Fund Growth Index 4/00 10,000 10,000 12/00 9,173 7,895 11,075 7,167 12/02 6,924 4,998 9,876 7,424 12/04 11,971 8,486 12,429 8,839 12/06 12,918 10,018 12,278 10,724 12/08 7,821 6,591 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Pioneer Growth Opportunities Fund was created through the reorganization of predecessor Safeco Growth Opportunities Fund on December 10, 2004. The performance of Class C shares of the Fund prior to December 10, 2004 is the performance of the predecessor fund's Class C shares, which has been restated to reflect differences in any applicable sales charges (but not differences in expenses). This adjustment has the effect of reducing the previously reported performance of predecessor fund. If all the expenses of the Fund were reflected, the performance would be lower. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers, Fund performance would be lower. Waivers may not be in effect for all funds and can be rescinded at any time. See the prospectus and financial statements for complete details. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. 12 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Class Y Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Growth Opportunities Fund, compared to that of the Russell 2000 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ---------------------------------------------------------------- If If Period Held Redeemed - ---------------------------------------------------------------- 10 Years -0.94% -0.94% 5 Years -3.30 -3.30 1 Year -35.06 -35.06 - ---------------------------------------------------------------- Expense Ratio (Per prospectus dated May 1, 2008) - ---------------------------------------------------------------- Gross Net - ---------------------------------------------------------------- 0.74% 0.74% - ---------------------------------------------------------------- [THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL] Value of $10,000 Investment Pioneer Growth Opportunities Russell 2000 Fund Growth Index 12/98 10,000 10,000 10,243 14,309 12/00 9,779 11,100 11,898 10,075 12/02 7,489 7,026 10,759 10,437 12/04 13,151 11,931 13,764 12,426 12/06 14,516 14,084 14,010 15,077 12/08 9,098 9,266 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Performance for periods prior to the inception of Class Y shares reflects the NAV performance of the Fund's Class A shares. The performance does not reflect differences in expenses, including the Rule 12b-1 fees applicable to Class A shares. Since fees for Class A shares are generally higher than those of Class Y shares, the performance shown for Class Y shares prior to their inception would have been higher. Class Y shares are not subject to sales charges and are available for limited groups of eligible investors, including institutional investors. Pioneer Growth Opportunities Fund was created through the reorganization of predecessor Safeco Growth Opportunities Fund on December 10, 2004. The performance of Class Y shares prior to December 10, 2004 is the performance of the predecessor fund's Class A shares, which has not been restated to reflect any differences in any applicable sales charges (but not differences in expenses, including Rule 12b-1 fees). This adjustment has the effect of reducing the previously reported performance of predecessor fund. If all the expenses of the Fund were reflected, the performance would be lower. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds and can be rescinded at any time. See the prospectus and financial statements for complete details. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 13 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables - -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Growth Opportunities Fund Based on actual returns from July 1, 2008 through December 31, 2008. - ----------------------------------------------------------------------------------------- Share Class A B C Y - ----------------------------------------------------------------------------------------- Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - ----------------------------------------------------------------------------------------- Ending Account $ 716.46 $ 710.64 $ 711.02 $ 718.44 Value on 12/31/08 - ----------------------------------------------------------------------------------------- Expenses Paid $ 5.52 $ 12.13 $ 11.35 $ 3.41 During Period* - ----------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.28%, 2.82%, 2.64% and 0.79% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 184/366 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. 14 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. 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 the 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 tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below 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 transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Growth Opportunities Fund Based on a hypothetical 5% return per year before expenses, reflecting the period from July 1, 2008 through December 31, 2008. - ----------------------------------------------------------------------------------------- Share Class A B C Y - ----------------------------------------------------------------------------------------- Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - ----------------------------------------------------------------------------------------- Ending Account $ 1,018.70 $ 1,010.96 $ 1,011.86 $ 1,021.17 Value on 12/31/08 - ----------------------------------------------------------------------------------------- Expenses Paid $ 6.50 $ 14.25 $ 13.35 $ 4.01 During Period* - ----------------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio plus the expense ratios of the underlying funds. The combined totals were 1.28%, 2.82%, 2.64% and 0.79% for Class A, Class B, Class C and Class Y shares, respectively. These combined ratios were multiplied by the average account value over the period, and then multiplied by 184/366 (to reflect the partial year period) to calculate the "Expenses Paid During Period" in the table above. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 15 Schedule of Investments | 12/31/08 - -------------------------------------------------------------------------------- Shares Value - -------------------------------------------------------------------------------- COMMON STOCKS -- 96.4% ENERGY -- 8.2% Coal & Consumable Fuels -- 1.4% 213,600 Foundation Coal Holdings, Inc. $ 2,994,672 - -------------------------------------------------------------------------------- Oil & Gas Equipment And Services -- 3.0% 46,396 Bristow Group, Inc.* $ 1,242,949 231,300 Exterran Holdings, Inc.*(b) 4,926,690 ------------ $ 6,169,639 - -------------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 3.8% 97,800 Carrizo Oil & Gas, Inc.*(b) $ 1,574,580 87,100 Comstock Resources, Inc.*(b) 4,115,475 111,100 Concho Resources, Inc.* 2,535,302 ------------ $ 8,225,357 ------------ Total Energy $ 17,389,668 - -------------------------------------------------------------------------------- MATERIALS -- 3.9% Diversified Metals & Mining -- 1.7% 416,200 Titanium Metals Corp. (b) $ 3,666,722 - -------------------------------------------------------------------------------- Gold -- 1.4% 58,500 Agnico Eagle Mines, Ltd. $ 3,002,805 - -------------------------------------------------------------------------------- Steel -- 0.8% 71,500 Cliffs Natural Resources, Inc. $ 1,831,115 ------------ Total Materials $ 8,500,642 - -------------------------------------------------------------------------------- CAPITAL GOODS -- 12.2% Aerospace & Defense -- 3.3% 16,900 Alliant Techsystems, Inc.*(b) $ 1,449,344 386,400 Hexcel Corp.* 2,855,496 76,000 Orbital Sciences Corp.*(b) 1,484,280 38,700 Stanley, Inc.* 1,401,714 ------------ $ 7,190,834 - -------------------------------------------------------------------------------- Construction & Engineering -- 4.3% 282,000 KBR, Inc. $ 4,286,400 255,000 Quanta Services, Inc.* 5,049,000 ------------ $ 9,335,400 - -------------------------------------------------------------------------------- Electrical Component & Equipment -- 1.8% 519,600 Polypore International, Inc.* $ 3,928,176 - -------------------------------------------------------------------------------- Industrial Conglomerates -- 2.2% 361,000 McDermott International, Inc.* $ 3,566,680 45,400 Otter Tail Corp. (b) 1,059,182 ------------ $ 4,625,862 - -------------------------------------------------------------------------------- Industrial Machinery -- 0.6% 537,800 Flow International Corp.* $ 1,301,476 ------------ Total Capital Goods $ 26,381,748 - -------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 16 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 - -------------------------------------------------------------------------------- Shares Value - -------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES -- 4.1% Diversified Support Services -- 1.1% 97,400 Iron Mountain, Inc.* $ 2,408,702 - -------------------------------------------------------------------------------- Environmental & Facilities Services -- 3.0% 90,600 Rollins, Inc. $ 1,638,048 43,600 Stericycle, Inc.*(b) 2,270,688 81,100 Waste Connections, Inc.*(b) 2,560,327 ------------ $ 6,469,063 ------------ Total Commercial Services & Supplies $ 8,877,765 - -------------------------------------------------------------------------------- TRANSPORTATION -- 0.5% Marine -- 0.5% 220,300 American Commercial Lines LLC*(b) $ 1,079,470 ------------ Total Transportation $ 1,079,470 - -------------------------------------------------------------------------------- CONSUMER DURABLES & APPAREL -- 1.1% Apparel, Accessories & Luxury Goods -- 0.8% 84,500 The Warnaco Group, Inc.* $ 1,658,735 - -------------------------------------------------------------------------------- Leisure Products -- 0.3% 175,400 Leapfrog Enterprises, Inc.*(b) $ 613,900 ------------ Total Consumer Durables & Apparel $ 2,272,635 - -------------------------------------------------------------------------------- CONSUMER SERVICES -- 5.5% Casinos & Gaming -- 0.8% 71,000 Bally Technologies, Inc.*(b) $ 1,706,130 - -------------------------------------------------------------------------------- Education Services -- 4.7% 41,700 American Public Education, Inc.* $ 1,550,823 58,800 Career Education Corp.* 1,054,872 30,700 DeVry, Inc. 1,762,487 204,079 Grand Canyon Education, Inc.* 3,832,604 21,200 ITT Educational Services, Inc.*(b) 2,013,576 ------------ $ 10,214,362 ------------ Total Consumer Services $ 11,920,492 - -------------------------------------------------------------------------------- RETAILING -- 4.2% Apparel Retail -- 1.5% 54,200 Gymboree Corp.*(b) $ 1,414,078 64,600 Ross Stores, Inc. 1,920,558 ------------ $ 3,334,636 - -------------------------------------------------------------------------------- General Merchandise Stores -- 0.5% 102,700 99 Cents Only Stores*(b) $ 1,122,511 - -------------------------------------------------------------------------------- Internet Retail -- 2.2% 63,800 Priceline.com, Inc.*(b) $ 4,698,870 ------------ Total Retailing $ 9,156,017 - -------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 17 Schedule of Investments | 12/31/08 (continued) - -------------------------------------------------------------------------------- Shares Value - -------------------------------------------------------------------------------- FOOD, BEVERAGE & TOBACCO -- 3.8% Brewers -- 0.7% 50,400 Boston Beer Co.*(b) $ 1,431,360 - -------------------------------------------------------------------------------- Packaged Foods & Meats -- 1.8% 178,125 American Italian Pasta Co.*(b) $ 3,979,313 - -------------------------------------------------------------------------------- Soft Drinks -- 1.3% 84,500 Hansen Natural Corp.* $ 2,833,285 ------------ Total Food, Beverage & Tobacco $ 8,243,958 - -------------------------------------------------------------------------------- HOUSEHOLD & PERSONAL PRODUCTS -- 1.3% Household Products -- 1.3% 50,500 Church & Dwight Co, Inc. (b) $ 2,834,060 ------------ Total Household & Personal Products $ 2,834,060 - -------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SERVICES -- 13.1% Health Care Equipment -- 8.7% 130,500 Abiomed, Inc.*(b) $ 2,142,810 150,300 Cryolife, Inc.* 1,459,413 472,200 DexCom, Inc.*(b) 1,303,272 73,600 IDEXX Laboratories, Inc.*(b) 2,655,488 223,900 Insulet Corp.*(b) 1,728,508 33,400 Masimo Corp.*(b) 996,322 27,900 NuVasive, Inc.*(b) 966,735 84,700 Quidel Corp.* 1,107,029 105,300 Thoratec Corp.*(b) 3,421,197 79,200 Vnus Medical Technologies, Inc.* 1,284,624 80,900 Wright Medical Group, Inc.*(b) 1,652,787 ------------ $ 18,718,185 - -------------------------------------------------------------------------------- Health Care Services -- 4.0% 35,300 Almost Family, Inc.*(b) $ 1,587,794 77,200 Catalyst Health Solutions, Inc.* 1,879,820 26,600 Genoptix, Inc.* 906,528 37,100 Lhc Group, Inc.* 1,335,600 110,500 Lincare Holdings, Inc.* 2,975,765 ------------ $ 8,685,507 - -------------------------------------------------------------------------------- Health Care Supplies -- 0.4% 48,900 Inverness Medical Innovations, Inc.*(b) $ 924,699 ------------ Total Health Care Equipment & Services $ 28,328,391 - -------------------------------------------------------------------------------- PHARMACEUTICALS & BIOTECHNOLOGY -- 11.5% Biotechnology -- 4.4% 34,200 Alexion Pharmaceuticals, Inc.* $ 1,237,698 116,300 BioMarin Pharmaceutical, Inc.*(b) 2,070,140 130,600 Cubist Pharmaceuticals, Inc.*(b) 3,155,296 The accompanying notes are an integral part of these financial statements. 18 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 - -------------------------------------------------------------------------------- Shares Value - -------------------------------------------------------------------------------- Biotechnology -- (continued) 13,900 Myriad Genetics, Inc.*(b) $ 921,014 85,000 Omrix Biopharmaceuticals, Inc.*(b) 2,125,000 ------------ $ 9,509,148 - -------------------------------------------------------------------------------- Life Sciences Tools & Services -- 3.8% 117,910 Advanced Magnetics, Inc.*(b) $ 4,227,074 313,900 Parexel International Corp.* 3,047,969 15,100 Techne Corp. 974,252 ------------ $ 8,249,295 - -------------------------------------------------------------------------------- Pharmaceuticals -- 3.3% 457,910 Cardiome Pharma Corp.*(b) $ 2,083,491 78,000 Endo Pharmaceuticals Holdings, Inc.*(b) 2,018,640 228,600 ViroPharma, Inc.*(b) 2,976,372 ------------ $ 7,078,503 ------------ Total Pharmaceuticals & Biotechnology $ 24,836,946 - -------------------------------------------------------------------------------- DIVERSIFIED FINANCIALS -- 2.4% Consumer Finance -- 1.4% 199,870 Ezcorp, Inc.* $ 3,040,023 - -------------------------------------------------------------------------------- Specialized Finance -- 1.0% 120,500 MSCI, Inc.* $ 2,140,080 ------------ Total Diversified Financials $ 5,180,103 - -------------------------------------------------------------------------------- SOFTWARE & SERVICES -- 15.1% Application Software -- 6.2% 167,100 Informatica Corp.* $ 2,294,283 244,400 Lawson Software, Inc.* 1,158,456 26,000 MicroStrategy, Inc.* 965,380 97,900 Net 1 UEPS Technologies, Inc.* 1,341,230 134,700 Quest Software, Inc.* 1,695,873 85,500 Synopsys, Inc.* 1,583,460 95,733 The Ultimate Software Group, Inc.*(b) 1,397,702 558,400 TIBCO Software, Inc.* 2,898,096 ------------ $ 13,334,480 - -------------------------------------------------------------------------------- Data Processing & Outsourced Services -- 0.9% 105,900 Neustar, Inc.*(b) $ 2,025,867 - -------------------------------------------------------------------------------- Internet Software & Services -- 3.3% 326,400 Comscore, Inc.* $ 4,161,600 211,800 Marchex, Inc.* 1,234,794 236,100 Skillsoft Plc* 1,685,754 ------------ $ 7,082,148 - -------------------------------------------------------------------------------- IT Consulting & Other Services -- 2.9% 39,100 Forrester Research, Inc.* $ 1,103,011 76,200 Gartner Group, Inc.*(b) 1,358,646 - -------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 19 Schedule of Investments | 12/31/08 (continued) - ----------------------------------------------------------------------------------- Shares Value - ----------------------------------------------------------------------------------- IT Consulting & Other Services -- (continued) 340,200 Sapient Corp.* $ 1,510,488 240,800 Satyam Computer Services, Ltd.*(b) 2,176,832 ------------ $ 6,148,977 - ----------------------------------------------------------------------------------- Systems Software -- 1.8% 27,900 Quality Systems, Inc. (b) $ 1,216,998 204,100 Red Hat, Inc.* 2,698,202 ------------ $ 3,915,200 ------------ Total Software & Services $ 32,506,672 - ----------------------------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 3.3% Communications Equipment -- 1.0% 93,800 F5 Networks, Inc.* $ 2,144,268 - ----------------------------------------------------------------------------------- Computer Hardware -- 0.9% 125,500 Teradata Corp.* $ 1,861,165 - ----------------------------------------------------------------------------------- Electronic Components -- 0.7% 85,200 Digital Theater Systems, Inc.*(b) $ 1,563,420 - ----------------------------------------------------------------------------------- Electronic Equipment & Instruments -- 0.7% 234,100 L-1 Identity Solutions* $ 1,577,834 ------------ Total Technology Hardware & Equipment $ 7,146,687 - ----------------------------------------------------------------------------------- SEMICONDUCTORS -- 4.3% Semiconductor Equipment -- 2.5% 109,900 MEMC Electronic Materials, Inc.* $ 1,569,372 284,300 Teradyne, Inc.* 1,199,746 209,400 Tessera Technologies, Inc.* 2,487,672 ------------ $ 5,256,790 - ----------------------------------------------------------------------------------- Semiconductors -- 1.8% 99,800 Actel Corp.* $ 1,169,656 244,300 Maxim Integrated Products, Inc. 2,789,906 ------------ $ 3,959,562 ------------ Total Semiconductors $ 9,216,352 - ----------------------------------------------------------------------------------- UTILITIES -- 1.9% Electric Utilities -- 0.6% 31,100 ITC Holdings Corp. $ 1,358,448 - ----------------------------------------------------------------------------------- Independent Power Producer & Energy Traders -- 1.3% 167,100 Calpine Corp.*(b) $ 1,216,485 48,300 Ormat Technologies, Inc. (b) 1,539,321 ------------ $ 2,755,806 ------------ Total Utilities $ 4,114,254 - ----------------------------------------------------------------------------------- TOTAL COMMON STOCKS (Cost $217,395,156) $207,985,860 - ----------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 20 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 - ----------------------------------------------------------------------------------- Shares Value - ----------------------------------------------------------------------------------- EXCHANGE TRADED FUNDS -- 1.5% 41,700 iShares Russell 2000 Growth $ 2,120,862 33,500 iShares Russell Micro Cap 1,066,975 - ----------------------------------------------------------------------------------- TOTAL EXCHANGE TRADED FUNDS (Cost $3,129,640) $ 3,187,837 - ----------------------------------------------------------------------------------- Principal Amount TEMPORARY CASH INVESTMENTS -- 22.6% Security Lending Collateral -- 22.6% (c) Certificates of Deposit: $ 1,126,204 Abbey National Plc, 3.15%, 8/13/09 $ 1,126,204 1,126,050 Bank of Nova Scotia, 3.21%, 5/5/09 1,126,050 1,799,758 Bank of Scotland NY, 2.92%, 6/5/09 1,799,758 2,027,166 Barclays Bank, 1.5%, 5/27/09 2,027,166 358,062 Calyon NY, 4.62%, 1/16/09 358,062 2,252,407 CBA, 4.87%, 7/16/09 2,252,407 2,027,166 DNB NOR Bank ASA NY, 3.04%, 6/5/09 2,027,166 2,063,205 Intesa SanPaolo S.p.A., 1.44%, 5/22/09 2,063,205 130,462 NORDEA NY, 4.13%, 4/9/09 130,462 1,689,305 Royal Bank of Canada NY, 2.7%, 8/7/09 1,689,305 1,126,204 Royal Bank of Scotland, 3.06%, 3/5/09 1,126,204 225,136 Skandinavian Enskilda Bank NY, 3.06%, 2/13/09 225,136 2,252,407 Societe Generale, 3.29%, 9/4/09 2,252,407 2,027,166 Svenska Bank NY, 4.61%, 7/8/09 2,027,166 2,252,407 U.S. Bank NA, 2.25%, 8/24/09 2,252,409 ------------ $ 22,483,107 - ----------------------------------------------------------------------------------- Commercial Paper: 2,211,864 American Honda Finance Corp., 4.95%, 7/14/09 $ 2,211,864 214,629 BBVA U.S., 2.83%, 3/12/09 214,629 1,126,204 CME Group, Inc., 2.9%, 8/6/09 1,126,204 1,126,084 General Electric Capital Corp., 2.86%, 3/16/09 1,126,084 2,252,407 HSBC Bank, Inc., 2.5%, 8/14/09 2,252,407 1,126,204 IBM, 2.39%, 9/25/09 1,126,204 2,027,166 Met Life Global Funding, 3.19%, 6/12/09 2,027,166 2,252,407 Monumental Global Funding, Ltd., 2.5%, 8/17/09 2,252,407 2,027,166 New York Life Global, 2.13%, 09/04/09 2,027,166 1,914,546 Westpac Banking Corp., 2.34%, 6/1/09 1,914,546 ------------ $ 16,278,677 - ----------------------------------------------------------------------------------- Tri-party Repurchase Agreements: 382,639 Barclays Capital Markets, 0.5%, 1/2/09 $ 382,639 4,955,296 Deutsche Bank, 0.25%, 1/2/09 4,955,296 ------------ $ 5,337,935 - ----------------------------------------------------------------------------------- Time Deposit: 2,252,407 BNP Paribas, 0.01%, 1/2/09 $ 2,252,407 - ----------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 21 Schedule of Investments | 12/31/08 (continued) - ----------------------------------------------------------------------------------- Shares Value - ----------------------------------------------------------------------------------- Money Market Mutual Funds: 563,102 Columbia Government Reserves Fund, 0.82%, 1/2/09 $ 563,102 1,689,305 JP Morgan, U.S. Government Money Market Fund, 0.98%, 1/2/09 1,689,305 ------------ $ 2,252,407 - ----------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $48,604,533) $ 48,604,533 - ----------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 120.5% (Cost $269,129,329) (a) $259,778,230 - ----------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- (20.5)% $(44,255,707) - ----------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $215,522,523 =================================================================================== * Non-income producing security. (a) At December 31, 2008, the net unrealized loss on investments based on cost for federal income tax purposes of $272,534,346 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $ 17,157,499 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (29,913,615) ------------ Net unrealized loss $(12,756,116) ============ (b) At December 31, 2008, the following securities were out on loan: - -------------------------------------------------------------------------------- Shares Security Market Value - -------------------------------------------------------------------------------- 50,000 99 Cents Only Stores* $ 546,500 74,000 Abiomed, Inc.* 1,215,080 12,500 Alliant Techsystems, Inc.* 1,072,000 34,500 Almost Family, Inc.* 1,551,810 51,600 Advanced Magnetics, Inc.* 1,849,860 96,500 American Commercial Lines LLC* 472,850 54,300 American Italian Pasta Co.* 1,213,062 63,000 Bally Technologies, Inc.* 1,513,890 97,500 BioMarin Pharmaceutical, Inc.* 1,735,500 13,100 Boston Beer Co.* 372,040 27,000 Calpine Corp.* 196,560 215,700 Cardiome Pharma Corp.* 981,435 72,100 Carrizo Oil & Gas, Inc.* 1,160,810 16,000 Church & Dwight Co, Inc. 897,920 55,900 Comstock Resources, Inc.* 2,641,275 128,400 Cubist Pharmaceuticals, Inc.* 3,102,144 47,800 DexCom, Inc.* 131,928 75,000 Digital Theater Systems, Inc.* 1,376,250 The accompanying notes are an integral part of these financial statements. 22 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 - -------------------------------------------------------------------------------- Shares Security Market Value - -------------------------------------------------------------------------------- 12,200 Endo Pharmaceuticals Holdings, Inc.* $ 315,736 228,900 Exterran Holdings, Inc.* 4,875,570 12,000 Gartner Group, Inc.* 213,960 53,500 Gymboree Corp.* 1,395,815 72,000 IDEXX Laboratories, Inc.* 2,597,760 221,600 Insulet Corp.* 1,710,752 40,000 Inverness Medical Innovations, Inc.* 756,400 17,000 ITT Educational Services, Inc.* 1,614,660 75,600 Leapfrog Enterprises, Inc.* 264,600 15,300 Masimo Corp.* 456,399 13,750 Myriad Genetics, Inc.* 911,075 4,000 Neustar, Inc.* 76,520 26,500 NuVasive, Inc.* 918,225 85,000 Omrix Biopharmaceuticals, Inc.* 2,125,000 21,000 Orbital Sciences Corp.* 410,130 15,300 Ormat Technologies, Inc. 487,611 44,000 Otter Tail Corp. 1,026,520 21,200 Priceline.com, Inc.* 1,561,380 24,901 Quality Systems, Inc. 1,086,182 24,200 Satyam Computer Services, Ltd.* 218,768 4,000 Stericycle, Inc.* 208,320 6,000 Thoratec Corp.* 194,940 14,000 Titanium Metals Corp. 123,340 44,000 The Ultimate Software Group, Inc.* 642,400 28,300 ViroPharma, Inc.* 368,466 35,900 Waste Connections, Inc.* 1,133,363 20,800 Wright Medical Group, Inc.* 424,944 - -------------------------------------------------------------------------------- Total $48,149,750 ================================================================================ (c) Security lending collateral is managed by Credit Suisse New York Branch. Purchases and sales of securities (excluding temporary cash investments) for the year ended December 31, 2008 aggregated $650,424,611 and $718,023,042, respectively. The accompanying notes are an integral part of these financial statements. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 23 Schedule of Investments | 12/31/08 (continued) Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) Level 3 -- significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of December 31, 2008, in valuing the Fund's assets: - -------------------------------------------------------------------------------- Investments Valuation Inputs in Securities - -------------------------------------------------------------------------------- Level 1 -- Quoted Prices $211,173,697 Level 2 -- Other Significant Observable Inputs 48,604,533 Level 3 -- Significant Unobservable Inputs -- - -------------------------------------------------------------------------------- Total $259,778,230 ================================================================================ The accompanying notes are an integral part of these financial statements. 24 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Statement of Assets and Liabilities | 12/31/08 ASSETS: Investment in securities (including securities loaned of $48,149,750) (cost $269,129,329) $259,778,230 Cash 5,878,051 Receivables -- Investment securities sold 451,046 Fund shares sold 55,570 Dividends 34,153 Other 25,149 - ---------------------------------------------------------------------------------------- Total assets $266,222,199 - ---------------------------------------------------------------------------------------- LIABILITIES: Payables -- Investment securities purchased $ 1,619,391 Fund shares repurchased 263,124 Upon return of securities loaned 48,604,533 Due to affiliates 75,306 Accrued expenses 137,322 - ---------------------------------------------------------------------------------------- Total liabilities $ 50,699,676 - ---------------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $320,606,058 Accumulated net realized loss on investments (95,732,436) Net unrealized loss on investments (9,351,099) - ---------------------------------------------------------------------------------------- Total net assets $215,522,523 ======================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $171,414,717/10,747,453 shares) $ 15.95 Class B (based on $1,152,694/82,900 shares) $ 13.90 Class C (based on $695,985/49,625 shares) $ 14.02 Class Y (based on $42,259,127/2,598,938 shares) $ 16.26 MAXIMUM OFFERING PRICE: Class A ($15.95 [divided by] 94.25%) $ 16.92 ======================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 25 Statement of Operations For the Year Ended 12/31/08 INVESTMENT INCOME: Dividends $1,357,340 Interest 1,007,683 Income from securities loaned, net 644,378 - ---------------------------------------------------------------------------------------- Total investment income $ 3,009,401 - ---------------------------------------------------------------------------------------- EXPENSES: Management fees $1,965,930 Transfer agent fees Class A 504,440 Class B 15,512 Class C 5,282 Class Y 1,278 Distribution fees Class A 566,043 Class B 17,606 Class C 8,261 Shareholder communications expense 157,545 Administrative fees 90,694 Custodian fees 99,803 Registration fees 48,090 Professional fees 69,198 Printing expense 37,350 Fees and expenses of nonaffiliated trustees 10,679 Miscellaneous 49,506 - ---------------------------------------------------------------------------------------- Total expenses $ 3,647,217 Less fees paid indirectly (13,682) - ---------------------------------------------------------------------------------------- Net expenses $ 3,633,535 - ---------------------------------------------------------------------------------------- Net investment loss $ (624,134) - ---------------------------------------------------------------------------------------- REALIZED AND UNREALIZED LOSS ON INVESTMENTS: Net realized loss on investments $ (95,315,816) - ---------------------------------------------------------------------------------------- Change in net unrealized gain on investments $ (32,948,156) - ---------------------------------------------------------------------------------------- Net loss on investments $(128,263,972) - ---------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $(128,888,106) - ---------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 26 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Statement of Changes in Net Assets For the Years Ended 12/31/08 and 12/31/07, respectively Year Ended Year Ended 12/31/08 12/31/07 FROM OPERATIONS: Net investment loss $ (624,134) $ (2,784,813) Net realized gain (loss) on investments (95,315,816) 46,611,663 Change in net unrealized gain (loss) on investments (32,948,156) (57,928,124) - ---------------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $(128,888,106) $ (14,101,274) - ---------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net realized gain: Class A ($0.31 and $2.36 per share, respectively) $ (3,318,383) $ (29,810,278) Class B ($0.31 and $2.36 per share, respectively) (25,429) (237,550) Class C ($0.31 and $2.36 per share, respectively) (14,809) (100,610) Class Y ($0.31 and $2.36 per share, respectively) (812,707) (6,831,734) - ---------------------------------------------------------------------------------------------- Total distributions to shareowners $ (4,171,328) $ (36,980,172) - ---------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 26,358,287 $ 38,428,553 Reinvestment of distributions 3,941,449 33,580,145 Cost of shares repurchased (100,015,176) (174,699,293) - ---------------------------------------------------------------------------------------------- Net decrease in net assets resulting from Fund share transactions $ (69,715,440) $(102,690,595) - ---------------------------------------------------------------------------------------------- Net decrease in net assets $(202,774,874) $(153,772,041) NET ASSETS: Beginning of year 418,297,397 572,069,438 - ---------------------------------------------------------------------------------------------- End of year $ 215,522,523 $ 418,297,397 - ---------------------------------------------------------------------------------------------- Undistributed net investment income $ 0 $ 0 - ---------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 27 Statement of Changes in Net Assets (continued) - ------------------------------------------------------------------------------------------------------ '08 Shares '08 Amount '07 Shares '07 Amount - ------------------------------------------------------------------------------------------------------ Class A Shares sold 411,113 $ 8,845,461 634,674 $ 18,607,842 Reinvestment of distributions 229,570 3,186,656 1,178,176 28,735,726 Less shares repurchased (3,358,446) (72,970,916) (3,205,907) (93,713,143) - ------------------------------------------------------------------------------------------------------ Net decrease (2,717,763) $(60,938,799) (1,393,057) $(46,369,575) ====================================================================================================== Class B Shares sold 9,122 $ 163,777 24,905 $ 641,162 Reinvestment of distributions 1,902 23,076 10,082 218,692 Less shares repurchased (34,502) (613,049) (48,708) (1,275,450) - ------------------------------------------------------------------------------------------------------ Net decrease (23,478) $ (426,196) (13,721) $ (415,596) ====================================================================================================== Class C Shares sold 16,121 $ 278,083 14,380 $ 383,487 Reinvestment of distributions 1,187 14,508 4,484 99,945 Less shares repurchased (13,831) (258,929) (25,188) (681,031) - ------------------------------------------------------------------------------------------------------ Net increase (decrease) 3,477 $ 33,662 (6,324) $ (197,599) ====================================================================================================== Class Y Shares sold 796,124 $ 17,070,966 656,274 $ 18,796,062 Reinvestment of distributions 50,722 717,209 183,057 4,525,782 Less shares repurchased (1,178,467) (26,172,282) (2,707,107) (79,029,669) - ------------------------------------------------------------------------------------------------------ Net decrease (331,621) $ (8,384,107) (1,867,776) $(55,707,825) ====================================================================================================== The accompanying notes are an integral part of these financial statements. 28 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Financial Highlights - ------------------------------------------------------------------------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 12/31/08 12/31/07 12/31/06 12/31/05 12/31/04(a) - ------------------------------------------------------------------------------------------------------------------------------------ Class A Net asset value, beginning of period $ 25.24 $ 28.81 $ 31.16 $ 29.80 $ 24.38 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations: Net investment loss $ (0.07) $ (0.20) $ (0.02) $ (0.12) $ (0.14)(b) Net realized and unrealized gain (loss) on investments ( 8.91) ( 1.01) 1.45 1.48 5.56 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ (8.98) $ (1.21) $ 1.43 $ 1.36 $ 5.42 Distributions to shareowners: Net realized gain (0.31) (2.36) (3.78) -- -- Redemption fees $ -- $ -- $ -- $ -- $ --(c) - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (9.29) $ (3.57) $ (2.35) $ 1.36 $ 5.42 - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 15.95 $ 25.24 $ 28.81 $ 31.16 $ 29.80 ==================================================================================================================================== Total return* (35.39)% (3.90)% 4.78% 4.56% 22.23% Ratio of net expenses to average net assets+ 1.28% 1.17% 1.28% 1.26% 1.31% Ratio of net investment loss to average net assets+ (0.29)% (0.65)% (0.39)% (0.56)% (0.55)% Portfolio turnover rate 221% 104% 99% 83% 17% Net assets, end of period (in thousands) $171,415 $339,870 $428,128 $53,000 $ 23,225 Ratios with no reduction for fees paid indirectly: Net expenses 1.28% 1.17% 1.28% 1.26% 2.29% Net investment loss (0.29)% (0.65)% (0.39)% (0.56)% (1.53)% Ratios with reduction for fees paid indirectly: Net expenses 1.28% 1.16% 1.28% 1.26% 1.31% Net investment loss (0.28)% (0.64)% (0.39)% (0.56)% (0.55)% - ------------------------------------------------------------------------------------------------------------------------------------ (a) Effective August 2, 2004, PIM became the sub-advisor of the Fund and subsequently became the advisor on December 10, 2004. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. + Ratios with no reduction for fees paid indirectly. (b) Net investment loss per share has been calculated using the average shares method. (c) Amount rounds to less than $0.01 cent per share. The accompanying notes are an integral part of these financial statements. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 29 Financial Highlights (continued) - ------------------------------------------------------------------------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 12/31/08 12/31/07 12/31/06 12/31/05 12/31/04(a) - ------------------------------------------------------------------------------------------------------------------------------------ Class B Net asset value, beginning of period $ 22.42 $ 26.19 $ 28.94 $ 27.94 $ 23.05 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations: Net investment loss $ (0.39) $ (0.48) $ (0.48) $ (0.16) $ (0.47)(b) Net realized and unrealized gain (loss) on investments (7.82) (0.93) 1.51 1.16 5.36 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ (8.21) $ (1.41) $ 1.03 $ 1.00 $ 4.89 Distributions to shareowners: Net realized gain (0.31) (2.36) (3.78) -- -- Redemption fees $ -- $ -- $ -- $ -- $ --(c) - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (8.52) $ (3.77) $ (2.75) $ 1.00 $ 4.89 - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 13.90 $ 22.42 $ 26.19 $ 28.94 $ 27.94 ==================================================================================================================================== Total return* (36.41)% (5.06)% 3.74% 3.58% 21.21% Ratio of net expenses to average net assets+ 2.84% 2.40% 2.40% 2.37% 2.08% Ratio of net investment loss to average net assets+ (1.86)% (1.88)% (1.67)% (1.72)% (1.37)% Portfolio turnover rate 221% 104% 99% 83% 17% Net assets, end of period (in thousands) $ 1,153 $ 2,385 $ 3,145 $ 3,503 $ 10 Ratios with no reduction for fees paid indirectly: Net expenses 2.84% 2.40% 2.40% 2.37% 2.33% Net investment loss (1.86)% (1.88)% (1.67)% (1.72)% (1.63)% Ratios with reduction for fees paid indirectly: Net expenses 2.82% 2.37% 2.38% 2.37% 2.08% Net investment loss (1.84)% (1.85)% (1.65)% (1.71)% (1.37)% - ------------------------------------------------------------------------------------------------------------------------------------ (a) Effective August 2, 2004, PIM became the sub-advisor of the Fund and subsequently became the advisor on December 10, 2004. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. + Ratios with no reduction for fees paid indirectly. (b) Net investment loss per share has been calculated using the average shares method. (c) Amount rounds to less than $0.01 cent per share. The accompanying notes are an integral part of these financial statements. 30 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 - ------------------------------------------------------------------------------------------------------------------------------------ Year Ended Year Ended Year Ended Year Ended Year Ended 12/31/08 12/31/07 12/31/06 12/31/05 12/31/04(a) - ------------------------------------------------------------------------------------------------------------------------------------ Class C Net asset value, beginning of period $ 22.57 $ 26.32 $ 29.01 $ 27.94 $ 23.05 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations: Net investment loss $ (0.27) $ (0.46) $ (0.36) $ (0.16) $ (0.33)(b) Net realized and unrealized gain (loss) on investments (7.97) (0.93) 1.45 1.23 5.22 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ (8.24) $ (1.38) $ 1.09 $ 1.07 $ 4.89 Distributions to shareowners: Net realized gain (0.31) (2.36) (3.78) -- -- Redemption fees $ -- $ -- $ -- $ -- $ --(c) - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (8.55) $ (3.75) $ (2.69) $ 1.07 $ 4.89 - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 14.02 $ 22.57 $ 26.32 $ 29.01 $ 27.94 ==================================================================================================================================== Total return* (36.30)% (4.96)% 3.93% 3.83% 21.21% Ratio of net expenses to average net assets+ 2.65% 2.22% 2.27% 2.02% 2.08% Ratio of net investment loss to average net assets+ (1.64)% (1.70)% (1.52)% (1.36)% (1.35)% Portfolio turnover rate 221% 104% 99% 83% 17% Net assets, end of period (in thousands) $ 696 $ 1,042 $ 1,381 $ 887 $ 10 Ratios with no reduction for fees paid indirectly: Net expenses 2.65% 2.22% 2.27% 2.02% 2.35% Net investment loss (1.64)% (1.70)% (1.52)% (1.36)% (1.62)% Ratios with reduction for fees paid indirectly: Net expenses 2.64% 2.20% 2.26% 2.02% 2.08% Net investment loss (1.63)% (1.68)% (1.51)% (1.36)% (1.35)% - ------------------------------------------------------------------------------------------------------------------------------------ (a) Effective August 2, 2004, PIM became the sub-advisor of the Fund and subsequently became the advisor on December 10, 2004. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period and no sales charges. Total return would be reduced if sales charges were taken into account. + Ratios with no reduction for fees paid indirectly. (b) Net Investment loss per shares have been calculated using the average shares method. (c) Amount rounds to less than $0.01 cent per share. The accompanying notes are an integral part of these financial statements. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 31 Financial Highlights (continued) - ------------------------------------------------------------------------------------------------------------------------------------ Year Ended Year Ended Year Ended 9/23/05 to 12/31/08 12/31/07 12/31/06 12/31/05(a) - ------------------------------------------------------------------------------------------------------------------------------------ Class Y Net asset value, beginning of period $ 25.59 $ 29.05 $ 31.19 $ 30.48 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations: Net investment income (loss) $ 0.05 $ (0.06) $ 0.01 $ (0.01) Net realized and unrealized gain (loss) on investments (9.07) (1.04) 1.63 0.72 - ------------------------------------------------------------------------------------------------------------------------------------ Net increase from investment operations $ (9.02) $ (1.10) $ 1.64 $ 0.71 Distributions to shareowners: Net realized gain (0.31) (2.36) (3.78) -- Redemption fees $ -- $ -- $ -- $ -- - ------------------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ (9.33) $ (3.46) $ (2.14) $ 0.71 - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 16.26 $ 25.59 $ 29.05 $ 31.19 ==================================================================================================================================== Total return* (35.06)% (3.48)% 5.46% 4.66%(b) Ratio of net expenses to average net assets+ 0.79% 0.71% 0.72% 0.78%* * Ratio of net investment income (loss) to average net assets+ 0.23% (0.19)% 0.00% (0.15)%** Portfolio turnover rate 221% 104% 99% 83% Net assets, end of period (in thousands) $ 42,259 $75,001 $ 139,415 $215,755 Ratios assuming reduction for fees paid indirectly: Net expenses 0.79% 0.71% 0.70% 0.77%** Net investment income (loss) 0.23% ( 0.19)% 0.02% ( 0.14)%** - ------------------------------------------------------------------------------------------------------------------------------------ * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions and the complete redemption of the investment at net asset value at the end of each period. ** Annualized. + Ratios with no reduction for fees paid indirectly. (a) Class Y shares were first offered September 23, 2005. (b) Not Annualized. The accompanying notes are an integral part of these financial statements. 32 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Notes to Financial Statements | 12/31/08 1. Organization and Significant Accounting Policies Pioneer Growth Opportunities Fund (the Fund) is one of seven series of portfolios comprising Pioneer Series Trust II, a Delaware statutory trust registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The Fund is the successor to the Safeco Growth Opportunities Fund. Safeco Growth Opportunities Fund transferred all of its net assets in exchange for the Fund's Investor Class shares on December 10, 2004 pursuant to an agreement and plan of reorganization (the "reorganization" which was approved by the shareholders of Safeco Growth Opportunities Fund on December 8, 2004). The Fund had no assets or liabilities prior to the reorganization. Accordingly, the reorganization, which was a tax-free exchange, had no effect on the Fund's operations. The investment objective of the Fund is growth of capital. The Fund offers four classes of shares designated as Class A, Class B, Class C and Class Y shares. Investor Class shares converted to Class A shares on December 10, 2006. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Share classes have exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. There is no distribution plan for Class Y shares. Class B shares convert to Class A shares approximately eight years after the date of purchase. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses, and gain or loss on investments during the reporting period. Actual results could differ from those estimates. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 33 At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectuses contain unaudited information regarding the Fund's principal risks. Please refer to those documents when considering the Fund's principal risks. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry: A. Security Valuation Security transactions are recorded as of trade date. The net asset value is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. In computing the net asset value, securities are valued at the last sale price on the principal exchange where they are traded. Securities that have not traded on the date of valuation, or securities for which sale prices are not generally reported, are valued at the mean between the last bid and asked prices. Securities for which market quotations are not readily available are valued using fair value methods pursuant to procedures adopted by the Board of Trustees. Trading in foreign securities is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. The Fund may also use fair value methods to value a security, including a non-U.S. security, when the closing market price on the principal exchange where the security is traded no longer reflects the value of the security. At December 31, 2008 there were no securities that were valued using fair value methods. Temporary cash investments are valued at cost which approximates market value. Dividend income is recorded on the ex-dividend date, except that certain dividends from foreign securities where the ex-dividend date may have passed are recorded as soon as the Fund becomes aware of the ex-dividend data in the exercise of reasonable diligence. Interest income, including interest on income bearing cash accounts, is recorded on the accrual basis. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. B. Foreign Currency Translation The books and records of the Fund are maintained in U.S. dollars. Amounts denominated in foreign currencies are translated into U.S. dollars using current exchange rates. Net realized gains and losses on foreign currency transactions represent, among other things, the net realized gains and losses on 34 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 foreign currency contracts, disposition of foreign currencies and the difference between the amount of income accrued and the U.S. dollars actually received. Further, the effects of changes in foreign currency exchange rates on investments are not segregated in the statement of operations from the effects of changes in market price of those securities but are included with the net realized and unrealized gain or loss on investments. C. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal tax provision is required. Tax years for the prior three fiscal years remain subject to examination by tax authorities. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Fund's distributions may be shown in the accompanying financial statements as either from or in excess of net investment income or net realized gain on investment transactions, or from paid-in capital, depending on the type of book/tax differences that may exist. The Fund has elected to defer $28,317,595 of capital losses recognized between November 1, 2008 and December 31, 2008 to its fiscal year ending December 31, 2009. At December 31, 2008, the Fund had a net capital loss carryforward of $64,009,824, which will expire in 2016 if not utilized. At December 31, 2008, the Fund has reclassified $624,134 to decrease accumulated net investment loss, $25,867 to decrease accumulated net realized loss on investments and $650,001 to decrease paid-in capital, to reflect permanent book/tax differences. The reclassification has no impact on the net assets of the Fund and presents the Fund's capital accounts on a tax basis. The tax character of distributions paid during the years ended December 31, 2008 and December 31, 2007 was as follows: - -------------------------------------------------------------------------------- 2008 2007 - -------------------------------------------------------------------------------- Distributions paid from: Long-term capital gain $4,171,328 $36,980,172 - -------------------------------------------------------------------------------- Total $4,171,328 $36,980,172 - -------------------------------------------------------------------------------- Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 35 The following shows the components of distributable earnings on a federal income tax basis at December 31, 2008. - -------------------------------------------------------------------------------- 2008 Distributable earnings: Capital loss carryforward $ (64,009,824) Current year post-October loss deferred (28,317,595) Unrealized depreciation (12,756,116) - -------------------------------------------------------------------------------- Total $ 105,083,535 - -------------------------------------------------------------------------------- The difference between book basis and tax basis unrealized appreciation is attributable to the tax deferral of losses on wash sales. D. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. (UniCredit), earned $4,395 in underwriting commissions on the sale of Class A shares during the year ended December 31, 2008. E. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on their respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class B and Class C shares of the Fund, respectively (see Note 4). Class Y shares are not subject to a distribution plan. Shareowners of each class participate in all expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services, which are allocated based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3.) Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner and at the same time, except that Class A, Class B, Class C, and Class Y shares can bear different transfer agent and distribution expense rates. F. Securities Lending The Fund lends securities in its portfolio to certain broker-dealers or other institutional investors. When entering into a securities loan transaction, the Fund typically receives cash collateral from the borrower equal to at least the value of the securities loaned, which is invested in temporary cash investments. Credit Suisse, New York Branch, as the Fund's security lending agent, 36 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 manages the Fund's securities lending collateral. The income earned on the investment of collateral is shared with the borrower and the lending agent in payment of any rebate due to the borrower with respect to the securities loan, and in compensation for the lending agent's services to the Fund. The Fund also continues to receive interest or payments in lieu of dividends on the securities loaned. Gain or loss on the value of the loaned securities that may occur during the term of the loan will be for the account of the Fund. The amount of the collateral is required to be adjusted daily to reflect any price fluctuation in the value of the loaned securities. The Fund has the right, under the lending agreement, to terminate the loan and recover the securities from the borrower with prior notice. The Fund will be required to return the cash collateral to the borrower and could suffer a loss if the value of the collateral, as invested, has declined. G. Repurchase Agreements With respect to repurchase agreements entered into by the Fund, the value of the underlying securities (collateral), including accrued interest, is required to be at least equal to or in excess of the value of the repurchase agreement. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Fund's custodian or subcustodians. The Fund's investment adviser, Pioneer Investment Management, Inc. (PIM), is responsible for determining that the value of the collateral remains at least equal to the repurchase price. 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at the annual rate of 0.65% of the Fund's average daily net assets. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund. Included in "Due to Affiliates" reflected on the Statement of Assets and Liabilities is $3,943 in management fees, administrative costs and certain other fees payable to PIM at December 31, 2008. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimbursed PIMSS for out-of-pocket expenses related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended December 31, 2008, such out of pocket expenses by class of shares were as follows: Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 37 - -------------------------------------------------------------------------------- Shareholder Communications: - -------------------------------------------------------------------------------- Class A $152,607 Class B 3,109 Class C 1,829 - -------------------------------------------------------------------------------- Total $157,545 ================================================================================ Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $70,172 in transfer agent fees and shareholder communications expense payable to PIMSS at December 31, 2008 4. Distribution Plans The Fund adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A, Class B and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund pays PFD 1.00% of the average daily net assets attributable to Class B and Class C shares. The fee for Class B and Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class B and Class C shares. Prior to February 1, 2008, PFD was reimbursed under the Distribution Plan for distribution expenses in an amount of up to 0.25% of the average daily net assets attributable to Class A shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $1,191 in distribution fees payable to PFD at December 31, 2008. In addition, redemptions of each class of shares (except Class Y shares) may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 18 months of purchase. Class B shares that are redeemed within five years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00% based on the lower of cost or market value of shares being redeemed. Proceeds from the CDSCs are paid to PFD. For the year ended December 31, 2008, CDSCs in the amount of $3,556 were paid to PFD. 5. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS resulting in a reduction in the Fund's total expenses, due to interest earned on cash held by PIMSS. For the year ended December 31, 2008, the Fund's expenses were reduced by $13,682 under such arrangements. 38 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 6. New Pronouncement In March 2008, Statement of Financial Accounting Standards No. 161, Disclosures about Derivative instruments and Hedging Activities (SFAS 161), was issued and is effective for fiscal years beginning after November 15, 2008. SFAS 161 requires enhanced disclosures about an entity's derivative and hedging activities. Management is currently evaluating the impact the adoption of SFAS 161 will have on the Fund's financial statement disclosures. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 39 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust II and Shareowners of Pioneer Growth Opportunities Fund: - -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer Growth Opportunities Fund, one of the series comprising Pioneer Series Trust II (the "Trust"), including the schedule of investments, as of December 31, 2008, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and the financial highlights for each of the periods indicated therein. These financial statements and financial highlights are the responsibility of the Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Trust's internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of December 31, 2008, by correspondence with the custodian and brokers or by other appropriate audit procedures where replies from brokers were not received. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer Growth Opportunities Fund of Pioneer Series Trust II at December 31, 2008, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and financial highlights for each of the periods indicated therein, in conformity with U.S. generally accepted accounting principles. /s/ Ernst & Young LLP Boston, Massachusetts February 18, 2009 40 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Ernst & Young LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at www.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. Trustees and Officers The Board of Trustees provides broad supervision over the fund's affairs. The officers of the fund are responsible for the fund's operations. The Trustees and officers are listed below, together with their principal occupations during the past five years. Trustees who are interested persons of the fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the fund are referred to as Independent Trustees. Each of the Trustees serves as a trustee of each of the 76 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the fund is 60 State Street, Boston, Massachusetts 02109. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 41 Interested Trustees - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service and Principal Occupation Other Directorships Held Name and Age with the Fund Term of Office During Past Five Years by this Trustee - ------------------------------------------------------------------------------------------------------------------------------------ John F. Cogan, Jr. Chairman of the Trustee since 2003. Deputy Chairman and a Director of None (82)* Board, Trustee Serves until a successor Pioneer Global Asset Management and President trustee is elected or S.p.A. ("PGAM"); Non-Executive earlier retirement or Chairman and a Director of Pioneer removal. Investment Management USA Inc. ("PIM-USA"); Chairman and a Director of Pioneer; Chairman and Director of Pioneer Institutional Asset Management, Inc. (since 2006); Director of Pioneer Alternative Investment Management Limited (Dublin); President and a Director of Pioneer Alternative Investment Management (Bermuda) Limited and affiliated funds; Director of PIOGLOBAL Real Estate Investment Fund (Russia) (until June 2006); Director of Nano-C, Inc. (since 2003); Director of Cole Management Inc. (since 2004); Director of Fiduciary Counseling, Inc.; President and Director of Pioneer Funds Distributor, Inc. ("PFD") (until May 2006); President of all of the Pioneer Funds; and Of Counsel, Wilmer Cutler Pickering Hale and Dorr LLP - ------------------------------------------------------------------------------------------------------------------------------------ Daniel K. Kingsbury Trustee and Trustee since 2008. Director, CEO and President of None (50)* Executive Serves until a successor Pioneer Investment Management USA Vice President trustee is elected or Inc. (since February 2007); Director earlier retirement or and President of Pioneer Investment removal. Management, Inc. and Pioneer Institu- tional Asset Management, Inc. (since February 2007); Executive Vice President of all of the Pioneer Funds (since March 2007); Director of Pioneer Global Asset Management S.p.A. (since April 2007); Head of New Markets Division, Pioneer Global Asset Management S.p.A. (2000 - 2007) - ------------------------------------------------------------------------------------------------------------------------------------ * Mr. Cogan and Mr. Kingsbury are Interested Trustees because they are officers or directors of the fund's investment adviser and certain of its affiliates. 42 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Independent Trustees - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service and Principal Occupation Other Directorships Held Name and Age with the Fund Term of Office During Past Five Years by this Trustee - ------------------------------------------------------------------------------------------------------------------------------------ David R. Bock (65) Trustee Trustee since 2005. Executive Vice President and Chief Director of Enterprise Serves until a successor Financial Officer, I-trax, Inc. Com- munity Investment, trustee is elected or (publicly traded health care services Inc. (privately-held earlier retirement or company) (2004 - 2007); Partner, affordable housing removal. Federal City Capital Advisors finance company); and (boutique merchant bank) (1997 to Director of New York 2004 and 2008 - present); and Mortgage Trust (publicly Executive Vice President and Chief traded mortgage REIT) Financial Officer, Pedestal Inc. (internet-based mortgage trading company) (2000 - 2002) - ------------------------------------------------------------------------------------------------------------------------------------ Mary K. Bush (60) Trustee Trustee since 2003. President, Bush International, LLC Director of Marriott Serves until a successor (international financial advisory firm) International, Inc., trustee is elected or Director of Discover earlier retirement or Financial Services removal. (credit card issuer and electronic payment services); Director of Briggs & Stratton Co. (engine manufacturer); Director of UAL Corporation (airline holding company) Director of Mantech International Corporation (national security, defense, and intelligence technology firm); and Member, Board of Governors, Investment Company Institute - ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 43 Independent Trustees (continued) - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service and Principal Occupation Other Directorships Held Name and Age with the Fund Term of Office During Past Five Years by this Trustee - ------------------------------------------------------------------------------------------------------------------------------------ Benjamin M. Friedman Trustee Trustee since 2008. Professor, Harvard University Trustee, Mellon (64) Serves until a successor Institutional Funds trustee is elected or Investment Trust and earlier retirement or Mellon Institutional removal Funds Master Portfolio (oversees 17 portfolios in fund complex) - ------------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Graham Trustee Trustee since 2003. Founding Director, Vice-President and None (61) Serves until a successor Corporate Secretary, The Winthrop Group, trustee is elected or Inc. (consulting firm); and Desautels earlier retirement or Faculty of Management, McGill University removal. - ------------------------------------------------------------------------------------------------------------------------------------ Thomas J. Perna (58) Trustee Trustee since 2006. Chief Executive Officer, Quadriserv, None Serves until a successor Inc. (2008 -- present) (technology trustee is elected or products for securities lending earlier retirement or industry); Private investor (2004 -- removal. 2008); and Senior Executive Vice Presi- dent, The Bank of New York (financial and securities services) (1986 -- 2004) - ------------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret Trustee Trustee since 2003. President and Chief Executive Officer, Director of New America (60) Serves until a successor Newbury, Piret & Company, Inc. High Income Fund, Inc. trustee is elected or (investment banking firm) (closed-end investment earlier retirement or company) removal. - ------------------------------------------------------------------------------------------------------------------------------------ Stephen K. West (80) Trustee Trustee since 2008. Senior Counsel, Sullivan & Cromwell LLP Director, The Swiss Serves until a successor (law firm) Helvetia Fund, Inc. trustee is elected or (closed-end earlier retirement or investment company) removal. - ------------------------------------------------------------------------------------------------------------------------------------ 44 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 Fund Officers - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service and Principal Occupation Other Directorships Held Name and Age with the Fund Term of Office During Past Five Years by this Officer - ------------------------------------------------------------------------------------------------------------------------------------ Dorothy E. Bourassa Secretary Since 2003. Serves at Secretary of PIM-USA; Senior Vice None (60) the discretion of the President - Legal of Pioneer; Board Secretary/Clerk of most of PIM-USA's subsidiaries; and Secretary of all of the Pioneer Funds since September 2003 (Assistant Secretary from November 2000 to September 2003) - ------------------------------------------------------------------------------------------------------------------------------------ Christopher J. Kelley Assistant Since 2003. Serves at Associate General Counsel of Pioneer None (44) Secretary the discretion of the since January 2008 and Assistant Board Secretary of all of the Pioneer Funds since September 2003; Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 - ------------------------------------------------------------------------------------------------------------------------------------ Mark E. Bradley (49) Treasurer Since 2008. Serves at Vice President -- Fund Accounting, None the discretion of the Administration and Controllership Board Services of Pioneer; and Treasurer of all of the Pioneer Funds since March 2008; Deputy Treasurer of Pioneer from March 2004 to February 2008; Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008; and Treasurer and Senior Vice President, CDC IXIS Asset Management Services from 2002 to 2003 - ------------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti (43) Assistant Since 2003. Serves at Assistant Vice President -- Fund None Treasurer the discretion of the Accounting, Administration and Board Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan (50) Assistant Since 2003. Serves at Fund Accounting Manager -- Fund None Treasurer the discretion of the Accounting, Administration and Board Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------------ Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 45 Fund Officers (continued) - ------------------------------------------------------------------------------------------------------------------------------------ Position Held Length of Service and Principal Occupation Other Directorships Held Name and Age with the Fund Term of Office During Past Five Years by this Officer - ------------------------------------------------------------------------------------------------------------------------------------ Katherine Kim Assistant Since 2003. Serves at Fund Administration Manager -- Fund None Sullivan (35) Treasurer the discretion of the Accounting, Administration and Board Controllership Services since June 2003 and Assistant Treasurer of all of the Pioneer Funds since September 2003; Assistant Vice President -- Mutual Fund Opera- tions of State Street Corporation from June 2002 to June 2003 (formerly Deutsche Bank Asset Management) - ------------------------------------------------------------------------------------------------------------------------------------ Teri W. Anderholm Chief Compliance Since 2007. Serves at Chief Compliance Officer of Pioneer None (49) Officer the discretion of the since December 2006 and of all the Board Pioneer Funds since January 2007; Vice President and Compliance Officer, MFS Investment Management (August 2005 to December 2006); Consultant, Fidelity Investments (February 2005 to July 2005); Independent Consultant (July 1997 to February 2005) - ------------------------------------------------------------------------------------------------------------------------------------ 46 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 This page for your notes. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 47 This page for your notes. 48 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 This page for your notes. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 49 This page for your notes. 50 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 This page for your notes. Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 51 This page for your notes. 52 Pioneer Growth Opportunities Fund | Annual Report | 12/31/08 How to Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: - -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Telecommunications Device for the Deaf (TDD) 1-800-225-1997 Write to us: - -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: pioneerinvestments.com This report must be preceded or accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. Pioneer Small and Mid Cap Growth Fund - -------------------------------------------------------------------------------- Annual Report | December 31, 2008 - -------------------------------------------------------------------------------- Ticker Symbols: Class A PAPPX Class B MCSBX Class C CGCPX [Logo]PIONEER Investments(R) visit us: pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 8 Prices and Distributions 9 Performance Update 11 Comparing Ongoing Fund Expenses 14 Schedule of Investments 16 Financial Statements 21 Notes to Financial Statements 28 Report of Independent Registered Public Accounting Firm 35 Approval of Sub-Advisory Agreement 36 Trustees, Officers and Service Providers 39 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 1 President's Letter Dear Shareowner, Stock and bond markets around the globe this year have experienced one of their most tumultuous periods in history. Investors have witnessed volatility of a magnitude that many have never before seen. Distance often provides the best vantage point for perspective. Still, we believe that the benefits of basic investment principles that have stood the test of time -- even in the midst of market turmoil -- cannot be underestimated. First, invest for the long term. The founder of Pioneer Investments, Philip L. Carret, began his investment career during the 1920s. One lesson he learned is that while great prosperity affords an advantageous time for selling stocks, extreme economic slumps can create opportunities for purchase. Indeed, many of our portfolio managers, who follow the value-conscious investing approach of our founder, are looking at recent market conditions as an opportunity to buy companies whose shares we believe have been unjustifiably beaten down by indiscriminate selling, but that we have identified as having strong prospects over time. While investors may be facing a sustained market downturn, we continue to believe that patience, along with staying invested in the market, are important considerations for long-term investors. A second principle is to stay diversified across different types of investments. The global scope of the current market weakness poses challenges for this basic investment axiom. But the turbulence makes now a good time to reassess your portfolio and make sure that your investments continue to meet your needs. We believe you should work closely with your financial advisor to find the mix of stocks, bonds and money market assets that is best aligned to your particular risk tolerance and investment objective. As the investment markets sort through the continuing crisis in the financial industry, we are staying focused on the fundamentals and risk management. With more than 80 years of experience behind us, we have learned how to navigate turbulent markets. At Pioneer Investments, risk management has always been a critical part of our culture -- not just during periods of extraordinary volatility. Our investment process is based on fundamental research, quantitative analysis and active portfolio management. This three-pillared process, which we apply to each of our portfolios, is supported by an integrated team approach and is designed to carefully balance risk and reward. While we 2 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 see potential chances for making money in many corners of the market, it takes research and experience to separate solid investment opportunities from speculation. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at www.pioneerinvestments.com. Thank you for investing with Pioneer. Respectfully, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 3 Portfolio Management Discussion | 12/31/08 Problems that began in the credit markets spread throughout the economy during 2008, leading to one of the worst periods for equity investments in recent history. In the following interview, members of the portfolio management team from L. Roy Papp & Associates, the Fund's sub-adviser, who are responsible for management of Pioneer Small and Mid Cap Growth Fund, discuss the factors that influenced the performance of the Fund during the year. Q How did the Fund perform during the 12 months ended December 31, 2008? A Pioneer Small and Mid Cap Growth Fund Class A shares returned -32.31% at net asset value for the 12 months ending December 31, 2008. During the same period, the Russell Midcap Growth Index returned -44.32% while the Russell 2500 Growth Index returned -41.50%. Over the same 12 months, the average return of the 602 mutual funds in Lipper's Mid-Cap Growth Core category was -44.49%. Q What were the principal factors affecting the Fund's performance during the 12 months ended December 31, 2008? A It was a horrible year in the stock market, with deep declines in most companies' share prices. The precipitous market drops were triggered by loose money policies that resulted in imprudent loans, especially in real estate, to unqualified borrowers. Those low-quality loans then were packaged by investment banks into securities that were sold to investors throughout the world. The poor quality of many mortgage loans became evident when housing values began declining, unleashing a cascading series of events that resulted in a deepening credit crisis that threatened the existence of major financial institutions. Government rescues and bailouts, and bankruptcies of well known financial corporations occurred over virtually the entire year, starting with the JP Morgan Chase's buyout -- with the help of the federal government -- of Bear Stearns in March, and extending until the end of the year when Bank of America acquired Merrill Lynch and Wells Fargo bought Wachovia. While the credit crisis exacerbated the existing problems of more troubled companies, such as General Motors, it also created new problems for many profitable corporations that began to see their credit dry up. Market volatility hit its highest point in the weeks after investment bank Lehman Brothers filed for bankruptcy in September, when investor confidence disappeared, consumers curtailed spending and corporations throughout the economy saw revenues shrink at the very time they lost access to credit. The financials sector was the area that was most severely hit in this tumultuous 4 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 market, as the share prices of even higher-quality companies with little credit exposure were pulled down with the rest of the sector. While the economic onslaught affected all areas of the equity market, small- and mid-cap stocks suffered some of the most severe effects because of their vulnerability when credit markets freeze up. In particular, corporations that did not have long, established track records found it difficult to gain credit when the flow of such credit froze as the year progressed. The Fund's holdings could not escape the effects of the difficult market environment, although the Fund did outperform both its Russell benchmarks and its Lipper peers. The Fund's performance was helped by our traditional emphasis on corporations with strong balance sheets, little debt, steady earnings growth, good cash flow and experienced management teams. Q What were some of the investments that most influenced the Fund's results during the 12-month period ended December 31, 2008? A The sharp downturn in the equity markets pulled down many of the Fund's holdings, but the quality bias of our investment discipline did help the Fund hold up better than the Russell benchmarks and the Lipper peer group average. Holdings that helped the Fund's performance include DeVry, a specialist in adult education programs which reduced its costs at the same time it enjoyed healthy gains in enrollment. O'Reilly Auto Parts, a retailing chain that recently made a significant acquisition, was another of the better performers for the Fund during the period. Defensive stocks, such as household products corporation Clorox, did well as investors were attracted to corporations with more consistent revenue streams. That was especially true in the health care group, where several Fund holdings performed relatively well, including C.R. Bard, Medco Health, Express Scripts, and Techne, which all outperformed. C.R. Bard produces medical products for the hospital market; Medco and Express Scripts are pharmacy benefits managers; and Techne produces proteins for the biotechnology and medical markets. Elsewhere, two technology-related companies that fared well were ChoicePoint, which provides employment screening services to corporations, and Informatica, which produces software that helps integrate information technology systems of different businesses. ChoicePoint was acquired by LexisNexis during the year. Several Fund holdings did produce disappointing results during the 12-month period, however, including some smaller energy companies whose share prices declined with the price of oil. They included Forest Oil, an exploration and production company, and FMC Technologies, a leading provider of undersea oil production systems. In the financials sector, one of the Fund's poor-performing investments was Federated Investors, an asset manager specializing in money market funds. Federated was hurt when low interest rates drove down the yields of money market funds. In technology, Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 5 the share price of Micros Systems, which sells information technology systems to the hospitality industry, declined because of concerns about shrinking demand. However, we have continued to favor the company because of the protection offered by the recurring revenues from its technology installations. Q What were some of the changes you made to the Fund during the 12 months ended December 31, 2008? A We sold some Fund holdings during the year for fundamental reasons, and others for technical reasons related to the need to have smaller companies to be consistent with the Russell indices. On a fundamental basis, we aimed to shift the Fund to less volatile stocks and sold positions in the following: DST, which produces information technology systems for the financials industry; Harte-Hanks, a publisher of shopper newspapers; International Speedway, which owns and operates automobile racing tracks; and UCBH Holdings, a California-based bank hurt by the housing downturn. On a technical basis, we sold the Fund's positions in Adobe Systems, the software company; Cameron International, an oil field services corporation; Coach, a specialty retailer specializing in luxury products; Newfield Exploration, an oil and natural gas exploration and production company; and ITT, a diversified corporation whose operations range from adult education programs to water purification system production. In our search for companies with superior long-term growth characteristics and potential, we added positions to the Fund in: Air Gas, a corporation providing chemicals to industrial corporations; FactSet Research, which provides information to the financial services industry; Henry Schein, which markets supplies to the dentistry market; Idex, which produces highly engineered products for industrial customers; and Nuance, a corporation that provides a leading speech-recognition technology system. Q What is your investment outlook? A The abrupt curtailment of consumer spending was a major contributor to the economic downturn during 2008, but we believe several factors could give a boost to consumer confidence and trigger more discretionary spending in 2009. They include: lower oil and gasoline prices, which have been putting more money in consumers' pockets; lower interest rates, which should help consumer spending and even housing sales; the massive federal government stimulus packages, which should put more money into the economy; and the possibility that the economy could improve under a new national administration. We also see some potential improvement in the capital markets. We already have witnessed some evidence of progress in the bond market, and we think 6 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 huge amounts of money are on the sidelines, ready to be deployed into higher-quality investments once some signs of progress appear. We firmly believe that our bias toward higher-quality corporations gives the Fund a portfolio of companies that are more likely to be the survivors of the recent economic downturn. We think they should have the potential to flourish in any potential recovery. Please refer to the Schedule of Investments on pages 16-20 for a full listing of Fund securities. Small and mid-sized companies may offer the potential for higher returns, but are also subject to greater short-term price fluctuations than larger, more established companies. The Fund invests in a limited number of securities and, as a result, the Fund's performance may be more volatile than the performance of other funds holding more securities. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These opinions should not be relied upon for any other purposes. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 7 Portfolio Summary | 12/31/08 Portfolio Diversification - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING IS REPRESENTED BY A PIE CHART IN THE PRINTED MATERIAL.] U.S. Common Stocks 81.8% Temporary Cash Investments 17.7% Depository Receipts for International Stocks 0.5% Sector Distribution - -------------------------------------------------------------------------------- (As a percentage of equity holdings) [THE FOLLOWING IS REPRESENTED BY A PIE CHART IN THE PRINTED MATERIAL.] Information Technology 26.7% Health Care 21.6% Consumer Discretionary 15.9% Industrials 13.1% Materials 8.1% Financials 6.6% Consumer Staples 4.1% Energy 3.9% 10 Largest Holdings - -------------------------------------------------------------------------------- (As a percentage of equity holdings) * 1. O'Reilly Automotive, Inc. 6.36% 2. Informatica Corp. 5.60 3. DeVry, Inc. 5.55 4. Airgas, Inc. 4.75 5. Dentsply International, Inc. 4.50 6. AMETEK, Inc. 4.46 7. Clorox Co. 4.09 8. Gardner Denver, Inc. 4.01 9. ResMed, Inc. 3.79 10. Henry Schein, Inc. 3.71 * This list excludes temporary cash investments and derivative instruments. The portfolio is actively managed, and current holdings may be different. The holdings listed should not be considered recommendations to buy or sell any security listed. 8 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Prices and Distributions | 12/31/08 Net Asset Value per Share - -------------------------------------------------------------------------------- Class 12/31/08 12/31/07 A $ 20.69 $ 31.68 - ---------------------------------------------- B $ 19.72 $ 30.52 - ---------------------------------------------- C $ 19.80 $ 30.62 - ---------------------------------------------- Distributions per Share: 1/1/08-12/31/08 - -------------------------------------------------------------------------------- Short-Term Long-Term Class Dividends Capital Gains Capital Gains A $ -- $ -- $ 0.7449 - --------------------------------------------------------------- B $ -- $ -- $ 0.7449 - --------------------------------------------------------------- C $ -- $ -- $ 0.7449 - --------------------------------------------------------------- Index Definitions - -------------------------------------------------------------------------------- The Russell Mid Cap Growth Index measures the performance of U.S. mid-cap growth stocks. The Russell 2500 Growth Index measures the performance of U.S. small- and mid-cap growth stocks. Index returns assume reinvestment of dividends and, unlike Fund returns, do not reflect any fees, expenses or sales charges. You cannot invest directly in an index. The index defined here pertains to the "Value of $10,000 Investment" charts on pages 11-13. Note to Shareholders: The Fund will institute the following investment policy change on February 1, 2009, regarding the index it uses for market capitalization purposes, and the corresponding section of the prospectus will read as follows. Please refer to the prospectus for the full text of the supplemented section. Principal investment strategies: Normally, the Fund invests at least 80% of its net assets (plus the amount of borrowings, if any, for investment purposes) in equity securities of small and mid-capitalization issuers, that is those with market values, at the time of investment, that do not exceed the market capitalization of the largest company within the Russell Mid Cap Growth Index (the Russell Index). (The Russell Mid Cap Growth Index measures the performance of U.S. mid-cap growth stocks.) Previously, the Standard and Poor's 400 Mid Cap 400 Index was used by the Fund as a benchmark for market capitalization Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 9 Prices and Distributions | 12/31/08 (continued) purposes. The size of the companies in the Russell Index may change dramatically as a result of market conditions and the composition of the Index. The Fund's investments will not be confined to securities issued by companies included in an index. For purposes of the fund's investment policies, equity securities include common stocks, convertible debt and other equity instruments, such as exchange-traded funds (ETFs) that invest primarily in equity securities, equity interests in real estate investment trusts (REITs), depositary receipts, warrants, rights and preferred stocks. 10 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Class A Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Small and Mid Cap Growth Fund at public offering price, compared to that of the Russell Mid Cap Growth Index and the Russell 2500 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ------------------------------------------------------------------ Net Asset Public Offering Period Value (NAV) Price (POP) - ------------------------------------------------------------------ 10 Years 3.89% 3.27% 5 Years -1.47 -2.63 1 Year -32.31 -36.20 - ------------------------------------------------------------------ Expense Ratio (Per prospectus dated May 1, 2008) - ------------------------------------------------------------------ Gross Net - ------------------------------------------------------------------ 1.52% 1.25% - ------------------------------------------------------------------ [THE FOLLOWING DATA IS REPRESENTED BY A MOUNTAIN CHART IN THE PRINTED MATERIAL.] Value of $10,000 Investment Pioneer Small and Mid Cap Russell 2500 Russell Mid Cap Growth Fund Growth Index Growth Index 12/98 9,425 10,000 10,000 10,626 15,129 15,548 12/00 13,919 13,351 13,046 14,041 10,661 11,632 12/02 11,443 7,739 8,248 14,859 11,045 12,068 12/04 15,670 12,754 13,829 16,432 14,298 14,959 12/06 17,445 15,821 16,794 20,389 17,629 18,421 12/08 13,801 9,815 10,776 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. NAV results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. POP returns reflect deduction of maximum 5.75% sales charge. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects contractual expense limitations currently in effect through 5/1/10 for Class A Shares. There can be no assurance that Pioneer will extend the expense limitations beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Small and Mid Cap Growth Fund acquired the assets of Papp Small & Mid-Cap Growth Fund in a reorganization on 2/20/04. The performance of Class A shares of the Fund from 12/15/98 to 2/20/04 is the performance of Papp Small & Mid-Cap Growth Fund's single class, which has been restated to reflect any applicable sales charges and Rule 12b-1 fees (but not other differences in expenses). This adjustment has the effect of reducing the previously reported performance of Papp Small & Mid-Cap Growth Fund. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 11 Performance Update | 12/31/08 Class B Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Small and Mid Cap Growth Fund, compared to that of the Russell Mid Cap Growth Index and the Russell 2500 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ------------------------------------------------------------------ If If Period Held Redeemed - ------------------------------------------------------------------ 10 Years 3.04% 3.04% 5 Years -2.35 -2.35 1 Year -32.92 -35.50 - ------------------------------------------------------------------ Expense Ratio (Per prospectus dated May 1, 2008) - ------------------------------------------------------------------ Gross Net - ------------------------------------------------------------------ 2.38% 2.15% - ------------------------------------------------------------------ [THE FOLLOWING DATA IS REPRESENTED BY A MOUNTAIN CHART IN THE PRINTED MATERIAL.] Value of $10,000 Investment Pioneer Small and Mid Cap Russell 2500 Russell Mid Cap Growth Fund Growth Index Growth Index 12/98 10,000 10,000 10,000 11,192 15,129 15,548 12/00 14,552 13,351 13,046 14,570 10,661 11,632 12/02 11,785 7,739 8,248 15,191 11,045 12,068 12/04 15,892 12,754 13,829 16,511 14,298 14,959 12/06 17,362 15,821 16,794 20,109 17,629 18,421 12/08 13,489 9,815 10,776 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. "If Redeemed" returns reflect the deduction of applicable contingent deferred sales charge (CDSC). Effective December 1, 2004, the period during which a CDSC is applied to withdrawals was shortened to 5 years. The maximum CDSC for Class B shares continues to be 4%. For more complete information, please see the prospectus for details. Note: Shares purchased prior to December 1, 2004 remain subject to the CDSC in effect at the time you purchased those shares. For performance information for shares purchased prior to December 1, 2004, please visit www.pioneerinvestments.com. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects contractual expense limitations currently in effect through 5/1/10 for Class B Shares. There can be no assurance that Pioneer will extend the expense limitations beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Small and Mid Cap Growth Fund acquired the assets of Papp Small & Mid-Cap Growth Fund in a reorganization on 2/20/04. The performance of Class B shares of the Fund from 12/15/98 to 2/20/04 is the performance of Papp Small & Mid-Cap Growth Fund's single class, which has been restated to reflect any applicable sales charges and Rule 12b-1 fees (but not other differences in expenses). This adjustment has the effect of reducing the previously reported performance of Papp Small & Mid-Cap Growth Fund. 12 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Class C Shares Investment Returns - -------------------------------------------------------------------------------- The mountain chart on the right shows the change in value of a $10,000 investment made in Pioneer Small and Mid Cap Growth Fund, compared to that of the Russell Mid Cap Growth Index and the Russell 2500 Growth Index. Average Annual Total Returns (As of December 31, 2008) - ------------------------------------------------------------------ If If Period Held Redeemed - ------------------------------------------------------------------ 10 Years 3.08% 3.08% 5 Years -2.27 -2.27 1 Year -32.88 -32.88 - ------------------------------------------------------------------ Expense Ratio (Per prospectus dated May 1, 2008) - ------------------------------------------------------------------ Gross Net - ------------------------------------------------------------------ 2.42% 2.15% - ------------------------------------------------------------------ [THE FOLLOWING DATA IS REPRESENTED BY A MOUNTAIN CHART IN THE PRINTED MATERIAL.] Value of $10,000 Investment Pioneer Small and Mid Cap Russell 2500 Russell Mid Cap Growth Fund Growth Index Growth Index 12/98 10,000 10,000 10,000 12/99 11,192 15,129 15,548 12/00 14,552 13,351 13,046 12/09 14,570 10,661 11,632 12/09 11,785 7,739 8,248 12/09 15,191 11,045 12,068 12/09 15,905 12,754 13,829 12/09 16,536 14,298 14,959 12/09 17,423 15,821 16,794 12/09 20,170 17,629 18,421 12/09 13,539 9,815 10,776 Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. The performance data quoted represents past performance, which is no guarantee of future results. Investment return and principal value will fluctuate, and shares, when redeemed, may be worth more or less than their original cost. Class C shares held for less than one year are also subject to a 1% contingent deferred sales charge (CDSC). "If Held" results represent the percent change in net asset value per share. Returns would have been lower had sales charges been reflected. All results are historical and assume the reinvestment of dividends and capital gains. Other share classes are available for which performance and expenses will differ. Performance results reflect any applicable expense waivers in effect during the periods shown. Without such waivers Fund performance would be lower. Waivers may not be in effect for all funds. Certain fee waivers are contractual through a specified period. Otherwise, fee waivers can be rescinded at any time. See the prospectus and financial statements for more information. The net expense ratio reflects contractual expense limitations currently in effect through 5/1/10 for Class C Shares. There can be no assurance that Pioneer will extend the expense limitations beyond such time. Please see the prospectus and financial statements for more information. The performance table and graph do not reflect the deduction of fees and taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Small and Mid Cap Growth Fund acquired the assets of Papp Small & Mid-Cap Growth Fund in a reorganization on 2/20/04. The performance of Class C shares of the Fund from 12/15/98 to 2/20/04 is the performance of Papp Small & Mid-Cap Growth Fund's single class, which has been restated to reflect any applicable sales charges and Rule 12b-1 fees (but not other differences in expenses). This adjustment has the effect of reducing the previously reported performance of Papp Small & Mid-Cap Growth Fund. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 13 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables - -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Small and Mid Cap Growth Fund Based on actual returns from July 1, 2008 through December 31, 2008. Share Class A B C Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - --------------------------------------------------------------------- Ending Account $ 696.26 $ 692.83 $ 693.17 Value on 12/31/08 - --------------------------------------------------------------------- Expenses Paid $ 5.33 $ 9.15 $ 9.15 During Period* - --------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.25%, 2.15% and 2.15% for Class A, Class B and Class C shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). 14 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. 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 the 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 tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below 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 transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Small and Mid Cap Growth Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from July 1, 2008 through December 31, 2008. Share Class A B C Beginning Account $ 1,000.00 $ 1,000.00 $ 1,000.00 Value on 7/1/08 - --------------------------------------------------------------------- Ending Account $ 1,018.85 $ 1,014.33 $ 1,014.33 Value on 12/31/08 - --------------------------------------------------------------------- Expenses Paid $ 6.34 $ 10.89 $ 10.89 During Period* - --------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 1.25%, 2.15% and 2.15% for Class A, Class B and Class C shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 15 Schedule of Investments | 12/31/08 Shares Value COMMON STOCKS -- 96.4% ENERGY -- 3.8% Oil & Gas Equipment & Services -- 2.1% 27,700 FMC Technologies, Inc.* $ 660,091 52,700 TETRA Technologies, Inc.* 256,122 ----------- $ 916,213 - ---------------------------------------------------------------------------- Oil & Gas Exploration & Production -- 1.7% 20,000 Forest Oil Corp.*(b) $ 329,800 6,500 Pioneer Natural Resources Co. 105,170 10,300 Whiting Petroleum Corp.* 344,638 ----------- $ 779,608 ----------- Total Energy $ 1,695,821 - ---------------------------------------------------------------------------- MATERIALS -- 7.8% Industrial Gases -- 4.6% 52,500 Airgas, Inc. $ 2,046,975 - ---------------------------------------------------------------------------- Specialty Chemicals -- 3.2% 34,500 Sigma-Aldrich Corp. (b) $ 1,457,280 ----------- Total Materials $ 3,504,255 - ---------------------------------------------------------------------------- CAPITAL GOODS -- 11.1% Electrical Component & Equipment -- 4.3% 63,600 AMETEK, Inc. $ 1,921,356 - ---------------------------------------------------------------------------- Industrial Machinery -- 6.8% 74,000 Gardner Denver, Inc.* $ 1,727,160 54,000 Idex Corp. 1,304,100 ----------- $ 3,031,260 ----------- Total Capital Goods $ 4,952,616 - ---------------------------------------------------------------------------- TRANSPORTATION -- 1.5% Air Freight & Couriers -- 1.5% 20,500 Expeditors International of Washington, Inc. (b) $ 682,035 ----------- Total Transportation $ 682,035 - ---------------------------------------------------------------------------- CONSUMER SERVICES -- 5.3% Education Services -- 5.3% 41,600 DeVry, Inc. $ 2,388,256 ----------- Total Consumer Services $ 2,388,256 - ---------------------------------------------------------------------------- MEDIA -- 0.6% Advertising -- 0.6% 9,000 WPP Plc $ 266,310 ----------- Total Media $ 266,310 - ---------------------------------------------------------------------------- RETAILING -- 9.4% Automotive Retail -- 6.1% 89,100 O'Reilly Automotive, Inc.*(b) $ 2,738,934 - ---------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 16 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Shares Value Specialty Stores -- 3.3% 78,600 PetSmart, Inc. $ 1,450,170 ----------- Total Retailing $ 4,189,104 - ------------------------------------------------------------------ HOUSEHOLD & PERSONAL PRODUCTS -- 3.9% Household Products -- 3.9% 31,700 Clorox Co. $ 1,761,252 ----------- Total Household & Personal Products $ 1,761,252 - ------------------------------------------------------------------ HEALTH CARE EQUIPMENT & SERVICES -- 18.1% Health Care Distributors -- 3.6% 43,500 Henry Schein, Inc.* $ 1,596,015 - ------------------------------------------------------------------ Health Care Equipment -- 6.1% 8,100 C. R. Bard, Inc. $ 682,506 43,500 ResMed Inc.* 1,630,380 10,800 Stryker Corp. 431,460 ----------- $ 2,744,346 - ------------------------------------------------------------------ Health Care Services -- 4.0% 19,800 Express Scripts, Inc.* $ 1,088,604 16,900 Medco Health Solutions, Inc.* 708,279 ----------- $ 1,796,883 - ------------------------------------------------------------------ Health Care Supplies -- 4.4% 68,700 Dentsply International, Inc. (b) $ 1,940,088 ----------- Total Health Care Equipment & Services $ 8,077,332 - ------------------------------------------------------------------ PHARMACEUTICALS & BIOTECHNOLOGY -- 2.8% Life Sciences Tools & Services -- 2.8% 19,200 Techne Corp. $ 1,238,784 ----------- Total Pharmaceuticals & Biotechnology $ 1,238,784 - ------------------------------------------------------------------ DIVERSIFIED FINANCIALS -- 6.4% Asset Management & Custody Banks -- 6.4% 85,000 Federated Investors, Inc.*(b) $ 1,441,600 40,000 T. Rowe Price Associates, Inc. 1,417,600 ----------- $ 2,859,200 ----------- Total Diversified Financials $ 2,859,200 - ------------------------------------------------------------------ SOFTWARE & SERVICES -- 13.8% Application Software -- 10.0% 23,000 FactSet Research Systems, Inc. (b) $ 1,017,520 175,500 Informatica Corp.*(b) 2,409,615 98,500 Nuance Communications, Inc.*(b) 1,020,460 ----------- $ 4,447,595 - ------------------------------------------------------------------ Data Processing & Outsourced Services -- 0.9% 11,600 Fiserv, Inc.* $ 421,892 - ------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 17 Schedule of Investments | 12/31/08 (continued) Shares Value Systems Software -- 2.9% 79,100 Micros Systems, Inc.* $ 1,290,912 ----------- Total Software & Services $ 6,160,399 - ----------------------------------------------------------------- TECHNOLOGY HARDWARE & EQUIPMENT -- 6.4% Electronic Equipment & Instruments -- 3.3% 22,000 Mettler-Toledo International, Inc.* $ 1,482,800 - ----------------------------------------------------------------- Electronic Manufacturing Services -- 3.1% 63,300 Trimble Navigation, Ltd.* $ 1,367,913 ----------- Total Technology Hardware & Equipment $ 2,850,713 - ----------------------------------------------------------------- SEMICONDUCTORS -- 5.5% 38,200 Linear Technology Corp. (b) $ 844,984 81,700 Microchip Technology (b) 1,595,601 ----------- $ 2,440,585 ----------- Total Semiconductors $ 2,440,585 - ----------------------------------------------------------------- TOTAL COMMON STOCKS (Cost $46,263,300) $43,066,662 - ----------------------------------------------------------------- Principal Amount TEMPORARY CASH INVESTMENTS -- 20.7% Security Lending Collateral -- 20.7% (c) Certificates of Deposit: $214,506 Abbey National Plc, 3.15%, 8/13/09 $ 214,506 214,476 Bank of Nova Scotia, 3.21%, 5/5/09 214,476 342,796 Bank of Scotland NY, 2.92%, 6/5/09 342,796 386,110 Barclays Bank, 1.5%, 5/27/09 386,110 68,199 Calyon NY, 4.62%, 1/16/09 68,199 429,011 CBA, 4.87%, 7/16/09 429,011 386,110 DNB NOR Bank ASA NY, 3.04%, 6/5/09 386,110 392,974 Intesa SanPaolo S.p.A., 1.44%, 5/22/09 392,974 24,849 NORDEA NY, 4.13%, 4/9/09 24,849 321,758 Royal Bank of Canada NY, 2.7%, 8/7/09 321,758 214,506 Royal Bank of Scotland, 3.06%, 3/5/09 214,506 42,881 Skandinavian Enskilda Bank NY, 3.06%, 2/13/09 42,881 429,011 Societe Generale, 3.29%, 9/4/09 429,011 386,110 Svenska Bank NY, 4.61%, 7/8/09 386,110 429,011 U.S. Bank NA, 2.25%, 8/24/09 429,012 ----------- $ 4,282,309 - ---------------------------------------------------------------------------- Commercial Paper: 421,289 American Honda Finance Corp., 4.95%, 7/14/09 $ 421,289 40,880 BBVA U.S., 2.83%, 3/12/09 40,880 214,506 CME Group, Inc., 2.9%, 8/6/09 214,506 214,483 General Electric Capital Corp., 2.86%, 3/16/09 214,483 429,011 HSBC Bank, Inc., 2.5%, 8/14/09 429,011 The accompanying notes are an integral part of these financial statements. 18 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Principal Amount Commercial Paper -- (continued) $214,506 IBM, 2.39%, 9/25/09 214,506 386,110 Met Life Global Funding, 3.19%, 6/12/09 386,110 429,011 Monumental Global Funding, Ltd., 2.5%, 8/17/09 429,011 386,110 New York Life Global, 2.13%, 09/04/09 386,110 364,659 Westpac Banking Corp., 2.34%, 6/1/09 364,658 ---------- $ 3,100,564 - ---------------------------------------------------------------------------- Tri-party Repurchase Agreements: 72,880 Barclays Capital Markets, 0.5%, 1/2/09 $ 72,881 943,824 Deutsche Bank, 0.25%, 1/2/09 943,824 ----------- $ 1,016,705 - ---------------------------------------------------------------------------- Time Deposit: 429,011 BNP Paribas, 0.01%, 1/2/09 $ 429,011 - ---------------------------------------------------------------------------- Shares Money Market Mutual Funds: 107,253 Columbia Government Reserves Fund, 0.82%, 1/2/09 $ 107,253 321,758 JP Morgan, U.S. Government Money Market Fund, 0.98%, 1/2/09 321,758 ----------- $ 429,011 - ---------------------------------------------------------------------------------------- TOTAL TEMPORARY CASH INVESTMENTS (Cost $9,257,600) $ 9,257,600 - ---------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 117.1% (Cost $55,520,900) (a) $52,324,262 - ---------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- (17.1)% $(7,637,045) - ---------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $44,687,217 ======================================================================================== * Non-income producing security. (a) At December 31, 2008, the net unrealized loss on investments based on cost for federal income tax purposes of $56,055,440 was as follows: Aggregate gross unrealized gain for all investments in which there is an excess of value over tax cost $ 7,256,735 Aggregate gross unrealized loss for all investments in which there is an excess of tax cost over value (10,987,913) ----------- Net unrealized loss $(3,731,178) =========== The accompanying notes are an integral part of these financial statements. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 19 Schedule of Investments | 12/31/08 (continued) (b) At December 31, 2008, the following securities were out on loan: Shares Security Market Value 5,000 Dentsply International, Inc. $ 141,200 20,000 Expeditors International of Washington, Inc. 665,400 22,600 FactSet Research Systems, Inc. 999,824 84,100 Federated Investors, Inc.* 1,426,336 4,000 Forest Oil Corp.* 65,960 101,400 Informatica Corp.* 1,392,222 36,800 Linear Technology Corp. 814,016 80,600 Microchip Technology 1,574,118 47,600 Nuance Communications, Inc.* 493,136 38,800 O'Reilly Automotive, Inc.* 1,192,712 5,600 Sigma-Aldrich Corp. 236,544 - ----------------------------------------------------------------------------- Total $9,001,468 ============================================================================= (c) Security lending collateral is managed by Credit Suisse New York Branch. Purchases and sales of securities (excluding temporary cash investments) for the year ended December 31, 2008 aggregated $31,059,397 and $28,913,533, respectively. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 - quoted prices in active markets for identical securities Level 2 - other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) Level 3 - significant unobservable inputs (including the Fund's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of December 31, 2008, in valuing the Fund's assets: Investments Valuation Inputs in Securities Level 1 - Quoted Prices $ 43,066,662 Level 2 - Other Significant Observable Inputs 9,257,600 Level 3 - Significant Unobservable Inputs - --------------------------------------------------------------- Total $ 52,324,262 =============================================================== The accompanying notes are an integral part of these financial statements. 20 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Statement of Assets and Liabilities | 12/31/08 ASSETS: Investment in securities (including securities loaned of $9,001,468) (cost $55,520,900) $52,324,262 Cash 643,825 Receivables -- Fund shares sold 1,044,441 Dividends and interest 11,083 Due from Pioneer Investment Management, Inc. 41,649 Other 37,653 - -------------------------------------------------------------------------------------- Total assets $54,102,913 - -------------------------------------------------------------------------------------- LIABILITIES: Payables -- Fund shares repurchased $ 75,714 Upon return of securities loaned 9,257,600 Due to affiliates 21,055 Accrued expenses 61,327 - -------------------------------------------------------------------------------------- Total liabilities $ 9,415,696 - -------------------------------------------------------------------------------------- NET ASSETS: Paid-in capital $48,415,387 Accumulated net realized loss on investments (531,532) Net unrealized loss on investments (3,196,638) - -------------------------------------------------------------------------------------- Total net assets $44,687,217 ===================================================================================== NET ASSET VALUE PER SHARE: (No par value, unlimited number of shares authorized) Class A (based on $36,374,458/1,758,084 shares) $ 20.69 Class B (based on $3,698,563/187,592 shares) $ 19.72 Class C (based on $4,614,196/233,089 shares) $ 19.80 MAXIMUM OFFERING PRICE: Class A ($20.69 [divided by] 94.25%) $ 21.95 ===================================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 21 Statement of Operations For the Year Ended 12/31/08 INVESTMENT INCOME: Dividends $693,535 Interest 20,569 Income from securities loaned, net 52,958 - -------------------------------------------------------------------------------------- Total investment income $ 767,062 - -------------------------------------------------------------------------------------- EXPENSES: Management fees $488,688 Transfer agent fees Class A 97,924 Class B 26,132 Class C 22,323 Distribution fees Class A 109,715 Class B 62,019 Class C 66,462 Administrative fees 17,244 Shareholder communications expense 50,285 Custodian fees 41,173 Registration fees 56,996 Professional fees 51,382 Printing expense 34,239 Fees and expenses of nonaffiliated trustees 5,221 Miscellaneous 8,006 - -------------------------------------------------------------------------------------- Total expenses $ 1,137,809 Less fees waived and expenses reimbursed by Pioneer Investment Management, Inc. (300,281) Less fees paid indirectly (3,469) - -------------------------------------------------------------------------------------- Net expenses $ 834,059 - -------------------------------------------------------------------------------------- Net investment loss $ (66,997) - -------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: Net realized gain on investments $ 1,077,016 - -------------------------------------------------------------------------------------- Change in net unrealized gain on investments $(24,087,904) - -------------------------------------------------------------------------------------- Net loss on investments $(23,010,888) - -------------------------------------------------------------------------------------- Net decrease in net assets resulting from operations $(23,077,885) ====================================================================================== The accompanying notes are an integral part of these financial statements. 22 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Statement of Changes in Net Assets For the Years Ended 12/31/08 and 12/01/07, respectively Year Ended Year Ended 12/31/08 12/01/07 FROM OPERATIONS: Net investment loss $ (66,997) $ (430,725) Net realized gain on investments 1,077,016 3,210,883 Change in net unrealized gain (loss) on investments (24,087,904) 6,241,921 - ------------------------------------------------------------------------------------------ Net increase (decrease) in net assets resulting from operations $(23,077,885) $ 9,022,079 - ------------------------------------------------------------------------------------------ DISTRIBUTIONS TO SHAREOWNERS: Net realized gain: Class A ($0.74 and $2.11 per share, respectively) $ (1,235,565) $(2,981,034) Class B ($0.74 and $2.11 per share, respectively) (139,362) (553,301) Class C ($0.74 and $2.11 per share, respectively) (162,535) (526,388) - ------------------------------------------------------------------------------------------ Total distributions to shareowners $ (1,537,462) $(4,060,723) - ------------------------------------------------------------------------------------------ FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $ 44,133,440 $23,359,211 Reinvestment of distributions 1,260,724 3,595,362 Cost of shares repurchased (41,179,480) (24,390,963) - ------------------------------------------------------------------------------------------ Net increase in net assets resulting from Fund share transactions $ 4,214,684 $ 2,563,610 - ------------------------------------------------------------------------------------------ Net decrease (increase) in net assets $(20,400,663) $ 7,524,966 NET ASSETS: Beginning of year 65,087,880 57,562,914 - ------------------------------------------------------------------------------------------ End of year $ 44,687,217 $65,087,880 - ------------------------------------------------------------------------------------------ Undistributed net investment income $ 0 $ 0 - ------------------------------------------------------------------------------------------ The accompanying notes are an integral part of these financial statements. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 23 Statement of Changes in Net Assets (continued) '08 Shares '08 Amount '07 Shares '07 Amount Class A Shares sold 1,197,701 $34,866,133 496,691 $15,925,118 Reinvestment of distributions 49,032 1,002,762 85,598 2,682,740 Less shares repurchased (1,004,183) (28,054,837) (540,913) (17,154,448) - -------------------------------------------------------------------------------------------------- Net increase 242,550 $ 7,814,058 41,376 $ 1,453,410 ================================================================================================== Class B Shares sold 190,454 $ 5,488,855 163,157 $ 5,111,978 Reinvestment of distributions 6,289 123,066 16,518 499,275 Less shares repurchased (295,913) (8,076,041) (59,078) (1,845,845) - -------------------------------------------------------------------------------------------------- Net increase (decrease) (99,170) $(2,464,120) 120,597 $ 3,765,408 ================================================================================================== Class C Shares sold 133,696 $ 3,778,452 72,445 $ 2,268,562 Reinvestment of distributions 6,852 134,896 13,631 413,347 Less shares repurchased (179,215) (5,048,602) (115,930) (3,571,127) - -------------------------------------------------------------------------------------------------- Net decrease (38,667) $(1,135,254) (29,854) $ (889,218) ================================================================================================== Class R* Shares sold -- $ -- 1,832 $ 53,553 Less shares repurchased -- -- (61,079) (1,819,543) - -------------------------------------------------------------------------------------------------- Net decrease -- $ -- (59,247) $(1,765,990) ================================================================================================== * Class R shares were liquidated on February 1, 2007. The accompanying notes are an integral part of these financial statements. 24 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Financial Highlights Year Year Ended Ended 12/31/08 12/31/07 Class A Net asset value, beginning of period $ 31.68 $ 28.93 - -------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ 0.02 $ (0.15) Net realized and unrealized gain (loss) on investments (10.27) 5.01 - -------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (10.25) $ 4.86 Distributions to shareowners: Net realized gain (0.74) (2.11) - -------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (10.99) $ 2.75 - -------------------------------------------------------------------------------------------- Net asset value, end of period $ 20.69 $ 31.68 ============================================================================================ Total return* (32.31)% 16.88% Ratio of net expenses to average net assets+ 1.25% 1.26% Ratio of net investment income (loss) to average net assets+ 0.10% (0.51)% Portfolio turnover rate 51% 21% Net assets, end of period (in thousands) $ 36,374 $48,012 Ratios assuming no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.79% 1.52% Net investment loss (0.44)% (0.77)% Ratios assuming waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.25% 1.25% Net investment income (loss) 0.10% (0.50)% ============================================================================================ Year Year Year Ended Ended Ended 12/31/06 12/31/05 12/31/04 Class A Net asset value, beginning of period $ 27.39 $ 26.12 $ 24.76 - --------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment income (loss) $ (0.18) $ (0.15) $ (0.16) Net realized and unrealized gain (loss) on investments 1.87 1.42 1.52 - --------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ 1.69 $ 1.27 $ 1.36 Distributions to shareowners: Net realized gain (0.15) -- -- - --------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ 1.54 $ 1.27 $ 1.36 - --------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 28.93 $ 27.39 $ 26.12 ========================================================================================================= Total return* 6.16% 4.86% 5.49% Ratio of net expenses to average net assets+ 1.26% 1.25% 1.25% Ratio of net investment income (loss) to average net assets+ (0.56)% (0.64)% (0.78)% Portfolio turnover rate 13% 13% 8% Net assets, end of period (in thousands) $42,654 $53,321 $40,504 Ratios assuming no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 1.62% 1.71% 1.79% Net investment loss (0.92)% (1.10)% (1.33)% Ratios assuming waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 1.25% 1.25% 1.25% Net investment income (loss) (0.55)% (0.64)% (0.78)% ========================================================================================================= * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. + Ratios with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 25 Financial Highlights (continued) Year Year Ended Ended 12/31/08 12/31/07 Class B Net asset value, beginning of period $ 30.52 $ 28.19 - ---------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment loss $ (0.28) $ (0.30) Net realized and unrealized gain (loss) on investments ( 9.78) 4.74 - ---------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (10.06) $ 4.44 Distributions to shareowners: Net realized gain (0.74) (2.11) - ---------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (10.80) $ 2.33 - ---------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 19.72 $ 30.52 ========================================================================================================== Total return* (32.92)% 15.82% Ratio of net expenses to average net assets+ 2.16% 2.16% Ratio of net investment loss to average net assets+ (0.87)% (1.40)% Portfolio turnover rate 51% 21% Net assets, end of period (in thousands) $ 3,699 $ 8,753 Ratios assuming no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 2.68% 2.38% Net investment loss (1.39)% (1.62)% Ratios assuming waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 2.15% 2.15% Net investment loss (0.86)% (1.39)% ========================================================================================================== Year Year Ended Ended 2/21/04 (a) 12/31/06 12/31/05 to 12/31/04 Class B Net asset value, beginning of period $ 26.95 $ 25.94 $ 25.32 - ------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment loss $ (0.50) $ (0.29) $ (0.20) Net realized and unrealized gain (loss) on investments 1.89 1.30 0.82 - ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 1.39 $ 1.01 $ 0.62 Distributions to shareowners: Net realized gain (0.15) -- -- - ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 1.24 $ 1.01 $ 0.62 - ------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 28.19 $ 26.95 $ 25.94 ======================================================================================================================== Total return* 5.15% 3.89% 2.45%(b Ratio of net expenses to average net assets+ 2.22% 2.17% 2.16%* * Ratio of net investment loss to average net assets+ (1.52)% (1.56)% (1.68)%** Portfolio turnover rate 13% 13% 8% Net assets, end of period (in thousands) $ 4,684 $ 7,062 $ 3,927 Ratios assuming no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 2.59% 2.62% 2.74%** Net investment loss (1.89)% (2.01)% (2.26)%** Ratios assuming waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 2.21% 2.16% 2.16%** Net investment loss (1.51)% (1.55)% (1.68)%** ======================================================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratios with no reduction for fees paid indirectly. (a) Class B Shares were first publicly offered on February 21, 2004. (b) Not Annualized. The accompanying notes are an integral part of these financial statements. 26 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Year Year Ended Ended 12/31/08 12/31/07 Class C Net asset value, beginning of period $ 30.62 $ 28.29 - ---------------------------------------------------------------------------------------------------------- Increase (decrease) from investment operations: Net investment loss $ (0.25) $ (0.43) Net realized and unrealized gain (loss) on investments (9.83) 4.87 - ---------------------------------------------------------------------------------------------------------- Net increase (decrease) from investment operations $ (10.08) $ 4.44 Distributions to shareowners: Net realized gain (0.74) (2.11) - ---------------------------------------------------------------------------------------------------------- Net increase (decrease) in net asset value $ (10.82) $ 2.33 - ---------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 19.80 $ 30.62 ========================================================================================================== Total return* (32.88)% 15.77% Ratio of net expenses to average net assets+ 2.16% 2.17% Ratio of net investment loss to average net assets+ (0.89)% (1.42)% Portfolio turnover rate 51% 21% Net assets, end of period (in thousands) $ 4,614 $ 8,322 Ratios assuming no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 2.60% 2.42% Net investment loss (1.33)% (1.67)% Ratios assuming waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 2.15% 2.15% Net investment loss (0.88)% (1.40)% ========================================================================================================== Year Year Ended Ended 2/21/04 (a) 12/31/06 12/31/05 to 12/31/04 Class C Net asset value, beginning of period $ 26.99 $ 25.96 $ 25.32 - ------------------------------------------------------------------------------------------------------------------------ Increase (decrease) from investment operations: Net investment loss $ (0.44) $ (0.29) $ (0.17) Net realized and unrealized gain (loss) on investments 1.89 1.32 0.81 - ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) from investment operations $ 1.45 $ 1.03 $ 0.64 Distributions to shareowners: Net realized gain ( 0.15) -- -- - ------------------------------------------------------------------------------------------------------------------------ Net increase (decrease) in net asset value $ 1.30 $ 1.03 $ 0.64 - ------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 28.29 $ 26.99 $ 25.96 ======================================================================================================================== Total return* 5.37% 3.97% 2.53%(b Ratio of net expenses to average net assets+ 2.05% 2.10% 2.07%* * Ratio of net investment loss to average net assets+ (1.35)% (1.48)% (1.59)%** Portfolio turnover rate 13% 13% 8% Net assets, end of period (in thousands) $ 8,531 $11,054 $ 5,860 Ratios assuming no waiver of fees and assumption of expenses by PIM and no reduction for fees paid indirectly: Net expenses 2.41% 2.55% 2.67%** Net investment loss (1.71)% (1.93)% (2.19)%** Ratios assuming waiver of fees and assumption of expenses by PIM and reduction for fees paid indirectly: Net expenses 2.04% 2.09% 2.07%** Net investment loss (1.34)% (1.47)% (1.59)%** ======================================================================================================================== * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratios with no reduction for fees paid indirectly. (a) Class C Shares were first publicly offered on February 21, 2004. (b) Not Annualized. The accompanying notes are an integral part of these financial statements. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 27 Notes to Financial Statements | 12/31/08 1. Organization and Significant Accounting Policies Pioneer Small and Mid Cap Growth Fund (the Fund), is one of seven series of portfolios comprising Pioneer Series Trust II, a Delaware statutory trust registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. The Fund, which commenced operations on February 20, 2004, is the successor to the Papp Small and Mid Cap Growth Fund, Inc. Papp Small and Mid Cap Growth Fund transferred all of its net assets in exchange for the Fund's Class A shares in a one-to-one exchange ratio on February 20, 2004 pursuant to an agreement and plan of reorganization (the "Reorganization" was approved by the Shareholders of Papp Small and Mid Cap Growth Fund, Inc. on February 20, 2004). Accordingly, the reorganization, which was a tax-free exchange, had no effect on the Fund's operations. The investment objective of the Fund is long term capital growth. The Fund offers three classes of shares designated as Class A, Class B and Class C shares. Class R shares were liquidated on February 1, 2007. Each class of shares represents an interest in the same portfolio of investments of the Fund and has identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investment income and, therefore, the payment of different dividends by each class. The Amended and Restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per share voting, each share of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Share classes have exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. Class B shares convert to Class A shares approximately eight years after the date of purchase. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gains and losses on investments during the reporting years. Actual results could differ from those estimates. 28 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. The Fund's prospectuses contain unaudited information regarding the Fund's principal risks. Please refer to these documents when considering the Fund's principal risks. The following is a summary of significant accounting policies followed by the Fund in the preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry: A. Security Valuation Security transactions are recorded as of trade date. The net asset value of the Fund is computed once daily, on each day the New York Stock Exchange (NYSE) is open, as of the close of regular trading on the NYSE. In computing the net asset value, securities are valued at the last sale price on the principal exchange where they are traded. Securities that have not traded on the date of valuation, or securities for which sale prices are not generally reported, are valued at the mean between the last bid and asked prices. Securities for which market quotations are not readily available are valued using fair value methods pursuant to procedures adopted by the Board of Trustees. Trading in foreign securities is substantially completed each day at various times prior to the close of the NYSE. The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. The Fund may also use fair value methods to value a security, including a non-U.S. security, when the closing market price on the principal exchange where the security is traded no longer reflects the value of the security. At December 31, 2008 there were no securities that were valued using fair value methods. Temporary cash investments are valued at cost which approximates market value. Dividend income is recorded on the ex-dividend date except that certain dividends from foreign securities where the ex-dividend date may have passed are recorded as soon as the Fund becomes aware of the ex-dividend data in the exercise of reasonable diligence. Dividend and interest income is recorded on the accrual basis, net of unrecoverable foreign taxes withheld at the applicable country rates. Gains and losses on sales of investments are calculated on the identified cost method for both financial reporting and federal income tax purposes. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 29 B. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. Tax years for the prior three fiscal years remain subject to examination by tax authorities. The amounts and characterizations of distributions to shareowners for financial reporting purposes are determined in accordance with federal income tax rules. Therefore, the sources of the Fund's distributions may be shown in the accompanying financial statements as from or in excess of net investment income as from net realized gain on investment transactions, or as from paid-in capital, depending on the type of book/tax differences that may exist. At December 31, 2008, the Fund has reclassified $66,997 to decrease accumulated net investment loss and $66,997 to decrease paid-in capital, to reflect permanent book/tax differences. The reclassification has no impact on the net assets of the Fund and presents the Fund's capital accounts on a tax basis. The tax character of distributions paid during the years ended December 31, 2008 and December 31, 2007 was as follows: 2008 2007 Distributions paid from: Ordinary income $1,537,462 $ -- Long-term capital gain -- 4,060,723 ---------------------------------------------------------- Total $1,537,462 $4,060,723 ========================================================== The following shows components of distributable earnings on a federal income tax basis at December 31, 2008: 2008 Distributable earnings: Undistributed long-term gain $ 3,008 Unrealized Depreciation (3,731,178) ---------------------------------------------------------- Total $(3,728,170) ========================================================== The difference between book basis and tax-basis unrealized appreciation is attributable to the tax deferral of losses on wash sales. C. Fund Shares The Fund records sales and repurchases of its shares as of trade date. Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the Fund and a wholly owned indirect subsidiary of UniCredit S.p.A. 30 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 (UniCredit), earned approximately $9,869 in underwriting commissions on the sale of Class A shares during the year ended December 31, 2008. D. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on the respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A, Class B and Class C shares of the Fund, respectively (see Note 4). Shareowners of each class participate in all expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services, which are allocated based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner, at the same time and on the same day, except that Class A, Class B and Class C shares bear different transfer agent and distribution expense rates. E. Securities Lending The Fund lends securities in its portfolio to certain broker-dealers or other institutional investors. When entering into a securities loan transaction, the Fund typically receives cash collateral from the borrower equal to at least the value of the securities loaned, which is invested in temporary cash investments. Credit Suisse, New York Branch, as the Fund's security lending agent, manages the Fund's securities lending collateral. The income earned on the investment of collateral is shared with the borrower and the lending agent in payment of any rebate due to the borrower with respect to the securities loan, and in compensation for the lending agent's services to the Fund. The Fund also continues to receive interest or payments in lieu of dividends on the securities loaned. Gain or loss on the value of the loaned securities that may occur during the term of the loan will be for the account of the Fund. The amount of the collateral is required to be adjusted daily to reflect any price fluctuation in the value of the loaned securities. The Fund has the right, under the lending agreement, to terminate the loan and recover the securities from the borrower with prior notice. The Fund will be required to return the cash collateral to the borrower and could suffer a loss if the value of the collateral, as invested, has declined. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 31 F. Repurchase Agreements With respect to repurchase agreements entered into by the Fund, the value of the underlying securities (collateral), including accrued interest, is required to be at least equal to or in excess of the value of the repurchase agreement. The collateral for all repurchase agreements is held in safekeeping in the customer-only account of the Fund's custodian or subcustodians. The Fund's investment adviser, Pioneer Investment Management, Inc. (PIM), is responsible for determining that the value of the collateral remains at least equal to the repurchase price. 2. Management Agreement PIM, a wholly owned indirect subsidiary of UniCredit, manages the Fund's portfolio. Management fees are calculated daily at the annual rate of 0.85% of the Fund's average daily net assets up to $1 billion and 0.80% on assets over $1 billion. For the year ended December 31, 2008, the management fee was equivalent to a rate of 0.85% of average net assets. PIM, and not the Fund pays a portion of the fee it receives from the Fund to L. Roy Papp & Associates LLP (Papp) as compensation for its sub advisory services to the Fund. Through May 1, 2010, PIM had agreed not to impose all or a portion of its management fee and to assume other operating expenses of the Fund to the extent necessary to limit expenses to 1.25%, 2.15%, 2.15%, for Classes A, B, and C respectively. Under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund. Included in "Due to Affiliates" reflected on the Statement of Assets and Liabilities is $1,034 in management fees, administrative costs and certain others fees payable to PIM at December 31, 2008. 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. In addition, the Fund reimbursed PIMSS for out-of-pocket expenses related to shareholder communications activities such as proxy and statement mailings, outgoing phone calls and omnibus relationship contracts. For the year ended December 31, 2008, such out of pocket expenses by class of shares were as follows: 32 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Shareholder Communications: Class A $43,431 - --------------------------------------------------------------- Class B 3,316 - --------------------------------------------------------------- Class C 3,538 - --------------------------------------------------------------- Total $50,285 - --------------------------------------------------------------- Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $19,548 in transfer agent fees and shareholder communications expense payable to PIMSS at December 31, 2008. 4. Distribution and Service Plans The Fund adopted a Distribution Plan pursuant to Rule 12b-1 of the Investment Company Act of 1940 with respect to its Class A, Class B and Class C shares. Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Pursuant to the Plan, the Fund pays PFD 1.00% of the average daily net assets attributable to Class B and Class C shares. The fee for Class B and Class C shares consists of a 0.25% service fee and a 0.75% distribution fee paid as compensation for personal services and/or account maintenance services or distribution services with regard to Class B and Class C shares. Prior to February 1, 2008, PFD was reimbursed under the Distribution Plan for distribution expenses in an amount of up to 0.25% of the average daily net assets attributable to Class A shares. Included in "Due to affiliates" reflected on the Statement of Assets and Liabilities is $473 in distribution fees payable to PFD at December 31, 2008. In addition, redemptions of each class of shares may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on certain net asset value purchases of Class A shares that are redeemed within 18 months of purchase. Class B shares that are redeemed within five years of purchase are subject to a CDSC at declining rates beginning at 4.00%, based on the lower of cost or market value of shares being redeemed. Redemptions of Class C shares within one year of purchase are subject to a CDSC of 1.00% based on the lower of cost or market value of shares being redeemed. Proceeds from the CDSCs are paid to PFD. For the year ended December 31, 2008, CDSCs in the amount of $16,774 were paid to PFD. 5. Expense Offset Arrangements The Fund has entered into certain expense offset arrangements with PIMSS resulting in a reduction in the Fund's total expenses due to interest earned on cash held by PIMSS. For the year ended December 31, 2008, the Fund's expenses were reduced by $3,469 under such arrangements. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 33 6. New Pronouncement In March 2008, Statement of Financial Accounting Standards No. 161, Disclosures about Derivative Instruments and Hedging Activities ("SFAS 161"), was issued and is effective for fiscal years beginning after November 15, 2008. SFAS 161 requires enhanced disclosures about an entity's derivative and hedging activities. Management is currently evaluating the impact the adoption of SFAS 161 will have on the Fund's financial statement disclosures. 34 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust II and the Shareowners of Pioneer Small and Mid Cap Growth Fund: - -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer Small and Mid Cap Growth Fund, one of the series constituting Pioneer Series Trust II (the "Trust"), including the schedule of investments, as of December 31, 2008, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and financial highlights for each of the periods indicated therein. These financial statements and financial highlights are the responsibility of the Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Trust's internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of December 31, 2008, by correspondence with the custodian and brokers. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer Small and Mid Cap Growth Fund of Pioneer Series Trust II at December 31, 2008, the results of its operations for the year then ended, the changes in its net assets and financial highlights for each of the periods indicated therein, in conformity with U.S. generally accepted accounting principles. /s/Ernst & Young LLP Boston, Massachusetts February 18, 2009 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 35 Approval of Sub-Advisory Agreement (unaudited) Pioneer Investment Management, Inc. (PIM) serves as the Fund's investment adviser pursuant to an investment advisory agreement between PIM and the Fund. PIM has retained L. Roy Papp & Associates, Inc. to serve as the sub-adviser to the Fund pursuant to a sub-advisory agreement between PIM and the sub-adviser. At a meeting held on January 8, 2008, the Trustees of the Fund approved an amended and restated investment advisory agreement between the Fund and PIM. Shareholders of the Fund approved the amended and restated investment advisory agreement on May 13, 2008. The material factors and conclusions with respect thereto that formed the basis for the Trustees' approval of the amended and restated investment advisory agreement are included in the Fund's semi-annual report for the period ended June 30, 2008. At a meeting held on November 11, 2008, based on their evaluation of the information provided by PIM and the sub-adviser, the Trustees of the Fund, including the independent Trustees voting separately, unanimously approved the continuation of the sub-advisory agreement for the Fund for another year. In considering the continuation of the sub-advisory agreement, the Trustees considered various factors that they determined were relevant, including the factors described below. The Trustees did not identify any single factor as the controlling factor in determining to approve the continuation of the sub- advisory agreement. Nature, Extent and Quality of Services The Trustees considered the nature, extent and quality of the services provided to the Fund by the sub-adviser, taking into account the investment objective and strategy of the Fund and the information related to the Fund provided to the Trustees at each quarterly meeting. The Trustees reviewed the terms of the sub-advisory agreement. The Trustees also reviewed the sub-adviser's investment approach for the Fund and its research process. The Trustees considered the resources of the sub-adviser and the personnel of the sub-adviser who provide investment management services to the Fund. Based on these considerations, the Trustees concluded that the nature, extent and quality of services provided by the sub-adviser to the Fund were satisfactory and consistent with the terms of the sub-advisory agreement. 36 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Performance of the Fund The Trustees considered the performance results of the Fund over various time periods. They reviewed information comparing the Fund's performance with the average performance of its peer group of funds as classified by Morningstar, Inc. (Morningstar), an independent provider of investment company data, and with the performance of the Fund's benchmark index. The Trustees considered that the Fund's annualized total return was in the first quintile of its Morningstar category for the one year period ended June 30, 2008 and that the Fund's annualized total return was in the second quintile of its Morningstar category for the three year period ended June 30, 2008. (In all quintile rankings referred to throughout this disclosure, first quintile is most favorable to the Fund's shareowners. Thus, highest relative performance would be first quintile and lowest relative expenses would also be first quintile.) The Trustees concluded that the investment performance of the Fund was satisfactory. Sub-advisory Fee and Expenses The Trustees considered the fees payable to the sub-adviser under the sub- advisory agreement. They also considered that PIM, not the Fund, paid the sub-adviser out of the management fees paid to PIM under the investment advisory agreement. The Trustees considered information regarding the management fees and expenses of the Fund in comparison to the management fees of its peer group of funds as classified by Morningstar and the expense ratios of a peer group of funds selected on the basis of criteria determined by the independent Trustees for this purpose using data provided by Strategic Insight Mutual Fund Research and Consulting, LLC (Strategic Insight), an independent third party. The Trustees considered that the Fund's management fee for the twelve months ended June 30, 2008 was in the third quintile relative to the management fees paid by other funds in its peer group Morningstar category for the comparable period. The Trustees also considered that the Fund's expense ratio for the twelve months ended June 30, 2008 was in the first quintile relative to its Strategic Insight peer group. The Trustees also reviewed the advisory fees charged by the sub-adviser to its separate account clients. The Trustees noted that the fee rates for those separate accounts generally were higher than the sub-advisory fees paid to the sub-adviser with respect to the Fund. It was noted that the sub-adviser reported that it did not currently manage any accounts with investment strategies that were similar to the Fund. The Trustees concluded that the sub-advisory fee payable by PIM to the sub-adviser of the Fund was reasonable in relation to the nature and quality of services provided by the sub-adviser. The Trustees also concluded that the Fund's expense ratio was reasonable. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 37 Profitability The Trustees considered information provided by PIM regarding the profitability of PIM with respect to the advisory services provided by PIM to the Fund, including the methodology used by PIM in allocating certain of its costs to the management of the Fund. They also considered PIM's profit margin in connection with the overall operation of the Fund. The Trustees further considered the sub-advisory fees received by the sub-adviser with respect to the Fund and the percentage that such fees represented of the sub-adviser's overall revenues (for the 12-month period ended December 31, 2007). They also reviewed the financial results realized by PIM and its affiliates from non-fund businesses. The Trustees considered the profit margins with respect to the Fund in comparison to the limited industry data available and noted that the profitability of any adviser was affected by numerous factors, including its organizational structure and method for allocating expenses. The Trustees recognized that each of PIM and the sub-adviser should be entitled to earn a reasonable level of profit for the services provided to the Fund. The Trustees concluded that the profit margins with respect to the management of the Fund were not unreasonable. Economies of Scale The Trustees considered the economies of scale with respect to the management of the Fund, whether the Fund had appropriately benefited from any economies of scale, and whether there was potential for realization of any further economies of scale. The Trustees concluded that, because of the breakpoints in the management and sub-advisory fee schedules and the reduced fee rates above certain asset levels, any perceived or potential economies of scale would be shared with the Fund. Other Benefits The Trustees considered that the sub-adviser reported that it does not receive any other benefits from its relationship with the Fund. Conclusion After consideration of the factors described above as well as other factors, the Trustees, including all of the independent Trustees, concluded that the sub-advisory agreement for the Fund between PIM and the sub-adviser, including the fees payable thereunder, was fair and reasonable and voted to approve the continuation of the sub-advisory agreement for the Fund. 38 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Ernst & Young LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at www.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. Trustees and Officers The Board of Trustees provides broad supervision over the fund's affairs. The officers of the fund are responsible for the fund's operations. The Trustees and officers are listed below, together with their principal occupations during the past five years. Trustees who are interested persons of the fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the fund are referred to as Independent Trustees. Each of the Trustees serves as a trustee of each of the 76 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the fund is 60 State Street, Boston, Massachusetts 02109. Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 39 Interested Trustees Position Held Length of Service Name and Age With the Fund and Term of Office John F. Cogan, Jr. (82)* Chairman of the Board, Trustee since 2003. Trustee and President Serves until a successor trustee is elected or earlier retirement or removal. - -------------------------------------------------------------------------------- Daniel K. Kingsbury (50)* Trustee and Executive Trustee since 2008. Vice President Serves until a successor trustee is elected or earlier retirement or removal. - -------------------------------------------------------------------------------- Other Directorships Held Name and Age Principal Occupation During Past Five Years by this Trustee John F. Cogan, Jr. (82)* Deputy Chairman and a Director of Pioneer Global Asset Man- None agement S.p.A. ("PGAM"); Non-Executive Chairman and a Direc- tor of Pioneer Investment Management USA Inc. ("PIM-USA"); Chairman and a Director of Pioneer; Chairman and Director of Pioneer Institutional Asset Management, Inc. (since 2006); Director of Pioneer Alternative Investment Management Limited (Dublin); President and a Director of Pioneer Alternative Invest- ment Management (Bermuda) Limited and affiliated funds; Director of PIOGLOBAL Real Estate Investment Fund (Russia) (until June 2006); Director of Nano-C, Inc. (since 2003); Director of Cole Management Inc. (since 2004); Director of Fiduciary Counseling, Inc.; President and Director of Pioneer Funds Dis- tributor, Inc. ("PFD") (until May 2006); President of all of the Pioneer Funds; and Of Counsel, Wilmer Cutler Pickering Hale and Dorr LLP - -------------------------------------------------------------------------------------------------------------------------- Daniel K. Kingsbury (50)* Director, CEO and President of Pioneer Investment Management None USA Inc. (since February 2007); Director and President of Pioneer Investment Management, Inc. and Pioneer Institutional Asset Management, Inc. (since February 2007); Executive Vice President of all of the Pioneer Funds (since March 2007); Director of Pioneer Global Asset Management S.p.A. (since April 2007); Head of New Markets Division, Pioneer Global Asset Management S.p.A. (2000 - 2007) - -------------------------------------------------------------------------------------------------------------------------- * Mr. Cogan and Mr. Kingsbury are Interested Trustees because they are officers or directors of the fund's investment adviser and certain of its affiliates. 40 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Independent Trustees Position Held Length of Service Name and Age With the Fund and Term of Office David R. Bock (65) Trustee Trustee since 2005. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------- Mary K. Bush (60) Trustee Trustee since 2003. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------- Other Directorships Held Name and Age Principal Occupation During Past Five Years by this Trustee David R. Bock (65) Executive Vice President and Chief Financial Officer, I-trax, Inc. Director of Enterprise Com- (publicly traded health care services company) (2004 - 2007); munity Investment, Inc. Partner, Federal City Capital Advisors (boutique merchant bank) (privately-held affordable (1997 to 2004 and 2008 - present); and Executive Vice Presi- housing finance company); dent and Chief Financial Officer, Pedestal Inc. (internet-based and Director of New York mortgage trading company) (2000 - 2002) Mortgage Trust (publicly traded mortgage REIT) - -------------------------------------------------------------------------------------------------------------------------- Mary K. Bush (60) President, Bush International, LLC (international financial Director of Marriott Interna- advisory firm) tional, Inc., Director of Dis- cover Financial Services (credit card issuer and elec- tronic payment services); Director of Briggs & Stratton Co. (engine manufacturer); Director of UAL Corporation (airline holding company) Director of Mantech Interna- tional Corporation (national security, defense, and intel- ligence technology firm); and Member, Board of Governors, Investment Company Institute - -------------------------------------------------------------------------------------------------------------------------- Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 41 Independent Trustees (continued) Position Held Length of Service Name and Age With the Fund and Term of Office Benjamin M. Friedman (64) Trustee Trustee since 2008. Serves until a successor trustee is elected or earlier retirement or removal. - -------------------------------------------------------------------- Margaret B.W. Graham (61) Trustee Trustee since 2003. Serves until a successor trustee is elected or earlier retirement or removal. - -------------------------------------------------------------------- Thomas J. Perna (58) Trustee Trustee since 2006. Serves until a successor trustee is elected or earlier retirement or removal. - -------------------------------------------------------------------- Marguerite A. Piret (60) Trustee Trustee since 2003. Serves until a successor trustee is elected or earlier retirement or removal. - -------------------------------------------------------------------- Stephen K. West (80) Trustee Trustee since 2008. Serves until a successor trustee is elected or earlier retirement or removal. - -------------------------------------------------------------------- Other Directorships Held Name and Age Principal Occupation During Past Five Years by this Trustee Benjamin M. Friedman (64) Professor, Harvard University Trustee, Mellon Institutional Funds Investment Trust and Mellon Institutional Funds Master Portfolio (oversees 17 portfolios in fund complex) - ------------------------------------------------------------------------------------------------------------------------------ Margaret B.W. Graham (61) Founding Director, Vice-President and Corporate Secretary, The None Winthrop Group, Inc. (consulting firm); and Desautels Faculty of Management, McGill University - ------------------------------------------------------------------------------------------------------------------------------ Thomas J. Perna (58) Chief Executive Officer, Quadriserv, Inc. (2008 - present) (tech- None nology products for securities lending industry); Private investor (2004 - 2008); and Senior Executive Vice President, The Bank of New York (financial and securities services) (1986 - 2004) - ------------------------------------------------------------------------------------------------------------------------------ Marguerite A. Piret (60) President and Chief Executive Officer, Newbury, Piret & Company, Director of New America Inc. (investment banking firm) High Income Fund, Inc. (closed-end investment company) - ------------------------------------------------------------------------------------------------------------------------------ Stephen K. West (80) Senior Counsel, Sullivan & Cromwell LLP (law firm) Director, The Swiss Helvetia Fund, Inc. (closed-end investment company) - ------------------------------------------------------------------------------------------------------------------------------ 42 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 Fund Officers Position Held Length of Service Name and Age With the Fund and Term of Office Dorothy E. Bourassa (60) Secretary Since 2003. Serves at the discretion of the Board - -------------------------------------------------------------------------- Christopher J. Kelley (44) Assistant Secretary Since 2003. Serves at the discretion of the Board - -------------------------------------------------------------------------- Mark E. Bradley (49) Treasurer Since 2008. Serves at the discretion of the Board - -------------------------------------------------------------------------- Luis I. Presutti (43) Assistant Treasurer Since 2003. Serves at the discretion of the Board - -------------------------------------------------------------------------- Gary Sullivan (50) Assistant Treasurer Since 2003. Serves at the discretion of the Board - -------------------------------------------------------------------------- Other Directorships Held Name and Age Principal Occupation During Past Five Years by this Officer Dorothy E. Bourassa (60) Secretary of PIM-USA; Senior Vice President - Legal of Pioneer; None Secretary/Clerk of most of PIM-USA's subsidiaries; and Secretary of all of the Pioneer Funds since September 2003 (Assistant Secretary from November 2000 to September 2003) - ------------------------------------------------------------------------------------------------------------------------------ Christopher J. Kelley (44) Associate General Counsel of Pioneer since January 2008 None and Assistant Secretary of all of the Pioneer Funds since September 2003; Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 - ------------------------------------------------------------------------------------------------------------------------------ Mark E. Bradley (49) Vice President - Fund Accounting, Administration and Controller- None ship Services of Pioneer; and Treasurer of all of the Pioneer Funds since March 2008; Deputy Treasurer of Pioneer from March 2004 to February 2008; Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008; and Treasurer and Senior Vice President, CDC IXIS Asset Management Services from 2002 to 2003 - ------------------------------------------------------------------------------------------------------------------------------ Luis I. Presutti (43) Assistant Vice President - Fund Accounting, Administration and None Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------ Gary Sullivan (50) Fund Accounting Manager - Fund Accounting, Administration and None Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ------------------------------------------------------------------------------------------------------------------------------ Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 43 Fund Officers (continued) Position Held Length of Service Name and Age With the Fund and Term of Office Katherine Kim Sullivan (35) Assistant Treasurer Since 2003. Serves at the discretion of the Board - ------------------------------------------------------------------------------ Teri W. Anderholm (49) Chief Compliance Officer Since 2007. Serves at the discretion of the Board - ------------------------------------------------------------------------------ Other Directorships Held Name and Age Principal Occupation During Past Five Years by this Officer Katherine Kim Sullivan (35) Fund Administration Manager - Fund Accounting, Administration None and Controllership Services since June 2003 and Assistant Trea- surer of all of the Pioneer Funds since September 2003; Assis- tant Vice President - Mutual Fund Operations of State Street Corporation from June 2002 to June 2003 (formerly Deutsche Bank Asset Management) - -------------------------------------------------------------------------------------------------------------------------- Teri W. Anderholm (49) Chief Compliance Officer of Pioneer since December 2006 None and of all the Pioneer Funds since January 2007; Vice President and Compliance Officer, MFS Investment Management (August 2005 to December 2006); Consultant, Fidelity Invest- ments (February 2005 to July 2005); Independent Consultant (July 1997 to February 2005) - -------------------------------------------------------------------------------------------------------------------------- The outstanding capital stock of PFD, Pioneer and PIMSS is indirectly wholly owned by UniCredito Italiano S.p.A. ("UniCredito Italiano"), one of the largest banking groups in Italy. Pioneer, the fund's investment adviser, provides investment management and financial services to mutual funds, institutional and other clients. 44 Pioneer Small and Mid Cap Growth Fund | Annual Report | 12/31/08 How To Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: - -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Telecommunications Device for the Deaf (TDD) 1-800-225-1997 Write to us: - -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: pioneerinvestments.com This report must be accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. - -------------------------------------------------------------------------------- Pioneer Tax Free Money Market Fund - -------------------------------------------------------------------------------- Annual Report | December 31, 2008 - -------------------------------------------------------------------------------- Ticker Symbols: Class A TTAXX Class Y PTYXX [LOGO]PIONEER Investments(R) visit us: pioneerinvestments.com Table of Contents Letter to Shareowners 2 Portfolio Management Discussion 4 Portfolio Summary 8 Performance Update 9 Comparing Ongoing Fund Expenses 10 Schedule of Investments 12 Financial Statements 17 Notes to Financial Statements 23 Report of Independent Registered Public Accounting Firm 28 Trustees, Officers and Service Providers 30 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 1 President's Letter Dear Shareowner, Stock and bond markets around the globe this year have experienced one of their most tumultuous periods in history. Investors have witnessed volatility of a magnitude that many have never before seen. Distance often provides the best vantage point for perspective. Still, we believe that the benefits of basic investment principles that have stood the test of time -- even in the midst of market turmoil -- cannot be underestimated. First, invest for the long term. The founder of Pioneer Investments, Philip L. Carret, began his investment career during the 1920s. One lesson he learned is that while great prosperity affords an advantageous time for selling stocks, extreme economic slumps can create opportunities for purchase. Indeed, many of our portfolio managers, who follow the value-conscious investing approach of our founder, are looking at recent market conditions as an opportunity to buy companies whose shares we believe have been unjustifiably beaten down by indiscriminate selling, but that we have identified as having strong prospects over time. While investors may be facing a sustained market downturn, we continue to believe that patience, along with staying invested in the market, are important considerations for long-term investors. A second principle is to stay diversified across different types of investments. The global scope of the current market weakness poses challenges for this basic investment axiom. But the turbulence makes now a good time to reassess your portfolio and make sure that your investments continue to meet your needs. We believe you should work closely with your financial advisor to find the mix of stocks, bonds and money market assets that is best aligned to your particular risk tolerance and investment objective. As the investment markets sort through the continuing crisis in the financial industry, we are staying focused on the fundamentals and risk management. With more than 80 years of experience behind us, we have learned how to navigate turbulent markets. At Pioneer Investments, risk management has always been a critical part of our culture -- not just during periods of extraordinary volatility. Our investment process is based on fundamental research, quantitative analysis and active portfolio management. This three-pillared process, which we apply to each of our portfolios, is supported by an integrated team approach and is designed to carefully balance risk and reward. While we 2 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 see potential chances for making money in many corners of the market, it takes research and experience to separate solid investment opportunities from speculation. We invite you to learn more about Pioneer and our time-tested approach to investing by consulting with your financial advisor or visiting us online at www.pioneerinvestments.com. Thank you for investing with Pioneer. Respectfully, /s/ Daniel K. Kingsbury Daniel K. Kingsbury President and CEO Pioneer Investment Management USA, Inc. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These statements should not be relied upon for any other purposes. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 3 Portfolio Management Discussion | 12/31/08 In the following interview, Pioneer Tax Free Money Market Fund Portfolio Manager Seth Roman outlines the investment environment for tax-free money market securities during the Fund's most recent fiscal year ended December 31, 2008, the Fund's performance during the period, his investment strategy, and his outlook going forward. Q How did the Fund perform during its most recent fiscal year ended December 31, 2008? A For the 12-month period ended December 31, 2008, the Fund's Class A shares posted a 1.58% total return at net asset value. Over the same 12-month period, the average return of the 108 funds in Lipper's Tax-Exempt Money Market category was 1.69%. Q Will you describe the investing environment for tax-exempt money market funds during the 12-month period ended December 31, 2008? A In March 2008, Wall Street was shocked by the rapid demise of Bear Stearns, and the U.S. Federal Reserve Board (the Fed) stepped in to arrange that firm's acquisition. In addition, during that time period the financial status of the three largest "monoline" insurers -- AMBAC, FGIC and MBIA -- which had, since the 1970s, insured billions of dollars in tax-exempt securities up to AAA ratings -- deteriorated swiftly. The three insurers' exposure to significant mortgage securities losses caused the credit ratings of the companies to be downgraded to below AAA. Those events, in turn, prompted investors to look beyond bond insurance and reexamine the underlying creditworthiness of hundreds of AAA-insured issues, creating significant volatility within the short- and long-term tax-exempt markets. During the fall of 2008, the financial crisis reached a crescendo, as Lehman Brothers failed, and the U.S. government was forced to rescue a number of major financial institutions, including AIG, Fannie Mae and Freddie Mac. In the aftermath of those events, credit markets across the maturity spectrum dried up, and market watchers worried over the health of the global financial system. In response to a massive credit crunch, a faltering U.S. economy and the breakdown of trust (and lending) between major financial institutions, the Fed and the U.S. Treasury Department (as well as foreign central banks and governments) were forced to act swiftly and decisively in an effort to restore liquidity to the financial system. Over the course of 2008, the Fed lowered short-term interest rates on a number of occasions. (The target range for the Federal funds rate, which began the year at 4%, was lowered to between 4 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 0% and 0.25% by December 31, 2008.) In addition, the Fed acted innovatively, creating a number of lending facilities for various areas of the credit markets, including lending facilities for asset-backed commercial paper and the money markets. By December, these actions had restored a measure of normalcy to the money markets, and credit markets in general. Q What has been your strategy for the Fund over the 12-month period ended December 31, 2008? A We have continued to maintain broad diversification within the Fund's portfolio, both on a regional and national basis, with AAA credits in revenue issues. As we pursue our nationally focused diversification strategy, we strongly emphasize high quality and safety of principal. In a volatile period for all financial markets, we took an extremely cautious approach in managing the Fund's average maturity. For this reason, the Fund invested principally in daily and weekly floating rate securities. These floating rate securities are extremely liquid, with yields that adjust daily or weekly based on market conditions, thus providing us with strategic flexibility and the Fund with reasonable yield. In terms of insured securities, because of the deterioration of the monoline insurers, we have discounted any insurance that may be associated with a particular security and continue to investigate closely the creditworthiness of each issuer whose securities we are considering for purchase. In addition, we chose not to extend the Fund's maturity during most of the 12-month period because we perceived a lack of creditworthy longer-term notes in the marketplace. By December 2008, when liquidity began to return to credit markets, we looked for opportunities within commercial paper issues and extended the Fund's maturity slightly to pick up additional yield. The Fund also emphasized education-related securities, especially within the state of Texas, where the economy is well diversified and has been holding up reasonably well in a difficult environment. Q What is your outlook? A Having endured a very difficult period last fall, the credit market environment has improved. However, economic statistics, including employment reports continue to be unfavorable, and it is difficult to predict how long the U.S. recession will last. Because of the government's active and innovative approach to monetary and fiscal policy, we agree with Fed Chairman Bernanke that the country will avoid another Great Depression. However, concern over a possible deflationary spiral persists. We believe that the Obama Administration will provide enough fiscal stimulus -- including funds for infrastructure and aid to municipalities -- to spur the economy eventually to recovery, possibly later this year or by mid-2010. For the economy to bounce back, housing prices must stabilize, and job losses will have to abate. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 5 In the coming months, we will continue to look for opportunities to extend the Fund's maturity, though with due caution. Because state and local tax receipts are likely to decline and negatively impact municipal budgets across the United States, we will continue to examine credit quality carefully and invest with extreme caution. In addition, we will monitor market movements strictly, and seek to take advantage of any upward movement in short-term yields while maintaining a high-quality portfolio. Please refer to the Schedule of Investments on pages 12-16 for a full listing of Fund securities. The performance of each class of the Fund is the performance of the predecessor fund's Investor Class, which has been restated to reflect differences in any applicable sales charges but not Rule 12b-1 fees or other differences in expenses. If all the expenses of the Pioneer fund were reflected, the performance would be lower. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Fund. Fund shares are not federally insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency. When interest rates rise, the prices of fixed income securities in the Fund will generally fall. Conversely, when interest rates fall, the prices of fixed income securities in the Fund will generally rise. The Fund has enrolled in the U.S. Treasury Department's Temporary Guarantee Program for Money Market Funds (the "Program"). The Program seeks to guarantee the $1.00 net asset value (NAV) of certain shares of money market funds as of September 19, 2008. The guarantee would be triggered in the event the market-based net asset value of a participating fund's share falls below $0.995 and that situation has not been cured. Recovery under the Program would require the Fund to liquidate. Upon liquidation, and subject to the availability of assets under the Program, eligible shareholders who have continued to maintain accounts would be entitled to receive a payment equal to any shortfall between the amount received by a shareholder in the liquidation and $1.00 per share. Only shareholders of record of the Fund as of September 19, 2008, are eligible to receive the benefit of the guarantee. Any increase in the number of shares held in the Fund in excess of shares held at the close of business on September 19, 2008 will not be covered. If, following September 19, 2008, the number of shares held in an account fluctuates, shareholders will be covered for either the number of shares held as of the close of business on September 19, 2008, or the number of shares held on the date of the trigger event, whichever is less. If a shareholder's account is closed with the Fund, any future investments in the Fund will not be guaranteed. 6 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 The Treasury has extended the Program's expiration date from December 18, 2008 to April 30, 2009. The Treasury has discretion to continue the Program until September 18, 2009. The Fund has submitted an extension notice to the Treasury in order to participate in the extended Program. If the Program were extended beyond April 30, 2009, eligible funds would have to renew their participation to maintain coverage. There is no assurance that the Fund will participate in the Program if it is extended beyond April 30, 2009. In order to participate in the initial three-month period of the Program, the Fund paid to the U.S. Treasury Department a fee in the amount of 0.01 % of the Fund's net asset value as of the close of business on September 19, 2008. In order to participate in the extended period of the Program, the Fund paid to the U.S. Treasury Department a fee in the amount of 0.015% of the Fund's net asset value as of the close of business on September 19, 2008. These expenses will be borne by the Fund without regard to any expense limitation currently in effect for the Fund and are reflected in the Statement of Operations. Any additional cost to participate in the extended Program also will be borne by the Fund. For more information about the Program's scope and limitations, please see the Fund's most recent prospectus as supplemented on December 22, 2008. Investments in the Fund are subject to possible loss due to the financial failure of issuers of underlying securities and their inability to meet their debt obligations. Investing in foreign and/or emerging markets securities involves risks relating to interest rates, currency exchange rates, economic, and political conditions. At times, the Fund's investments may represent industries or industry sectors that are interrelated or have common risks, making it more susceptible to any economic, political, or regulatory developments or other risks affecting those industries and sectors. Past performance is no guarantee of future results, and there is no guarantee that market forecasts discussed will be realized. Any information in this shareholder report regarding market or economic trends or the factors influencing the Fund's historical or future performance are statements of the opinion of Fund management as of the date of this report. These statements should not be relied upon for any other purposes. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 7 Portfolio Summary | 12/31/08 Sector Distribution - -------------------------------------------------------------------------------- (As a percentage of total investment portfolio) [THE FOLLOWING DATA WAS REPRESENTED BY A PIE CHART IN THE PRINTED MATERIAL.] Medical 19.23% Utilities 12.91% Education 11.60% Higher Education 11.25% Government 10.15% Development 7.89% Water 5.21% Diversified 5.20% Facilities 4.88% Pollution 4.83% Transportation 2.55% Power 1.74% General 1.61% Airport 0.95% 10 Largest Holdings - -------------------------------------------------------------------------------- (As a percentage of debt holdings)* 1. Southeast, Alabama Gas District, Floating Rate Note, 8/1/27 4.17% 2. Boston Massachusetts Water & Sewer Commercial Revenue, Floating Rate Note, 11/1/24 3.94 3. Texas State Tax & Revenue Anticipation Note, 3.0%, 8/28/09 3.51 4. City of Jacksonville Florida, 0%, 3/2/09 3.48 5. New Hampshire Health & Education, Floating Rate Note, 7/1/35 3.31 6. Washington State Health Care Facilities, Floating Rate Note, 10/1/28 3.02 7. Harris County Texas Health, Floating Rate Note, 12/01/41 2.96 8. Vanderbilt University, 1.2%, 2/5/09 2.90 9. Board of Governors of the University, 0.75%, 4/3/09 2.90 10. University of Michigan, Floating Rate Note, 12/1/37 2.89 * This list excludes temporary cash and derivative instruments. Portfolio holdings will vary for other periods. The holdings listed should not be considered recommendations to buy or sell any securities listed. 8 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Performance Update | 12/31/08 Share Prices - -------------------------------------------------------------------------------- Net Asset Value Per Share 12/31/08 12/31/07 Class A Shares $ 1.00 $ 1.00 Class Y Shares $ 1.00 $ 1.00 Distributions Per Share - -------------------------------------------------------------------------------- Income Short-Term Long-Term (1/1/08 - 12/31/08) Dividends Capital Gains Capital Gains Class A Shares $ 0.0157 $ - $ - Class Y Shares $ 0.0174 $ - $ - Yields** - -------------------------------------------------------------------------------- Per Share 7-Day Annualized 7-Day Effective* Class A Shares 0.32% 0.32% Class Y Shares 0.49% 0.49% * Assumes daily compounding of dividends. ** Please contact Pioneer to obtain the Fund's current yield. Expense Ratio - -------------------------------------------------------------------------------- (Per Prospectus dated May 1, 2008) Gross Net Class A Shares 0.65% 0.65% Class Y Shares 0.44% 0.44% Call 1-800-225-6292 or visit www.pioneerinvestments.com for the most recent month-end performance results. Current performance may be lower or higher than the performance data quoted. Performance data shown represents past performance. Past performance does not guarantee future results. Investment returns will fluctuate, and there can be no guarantee the Fund will be able to maintain a stable net asset value of $1.00 per share. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it is possible to lose money by investing in the Fund. Pioneer Tax Free Money Market was created through the reorganization of the predecessor Safeco Tax Free Money Market Fund on December 10, 2004. The performance of each class of the Fund is the performance of the predecessor fund's Investor Class, which has been restated to reflect differences in any applicable sales charges (but not Rule 12b-1 fees or other differences in expenses). If all the expenses of the Fund were reflected, the performance would be lower. Performance does not reflect the deduction of taxes that a shareowner would pay on Fund distributions or the redemption of Fund shares. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 9 Comparing Ongoing Fund Expenses As a shareowner in the Fund, you incur two types of costs: (1) ongoing costs, including management fees, distribution and/or service (12b-1) fees, and other Fund expenses; and (2) transaction costs, including sales charges (loads) on purchase payments. This example is intended to help you understand your ongoing expenses (in dollars) of investing in the Fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 at the beginning of the Fund's latest six-month period and held throughout the six months. Using the Tables - -------------------------------------------------------------------------------- Actual Expenses The first table below provides information about actual account values and actual expenses. You may use the information in this table, together with the amount you invested, to estimate the expenses that you paid over the period as follows: (1) Divide your account value by $1,000 Example: an $8,600 account value [divided by] $1,000 = 8.6 (2) Multiply the result in (1) above by the corresponding share class's number in the third row under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. Expenses Paid on a $1,000 Investment in Pioneer Tax Free Money Market Fund Based on actual returns from July 1, 2008 through December 31, 2008. Share Class A Y Beginning Account $ 1,000.00 $ 1,000.00 Value on 7/1/08 - ------------------------------------------------------------------------------- Ending Account $ 1,007.94 $ 1,008.82 Value on 12/31/08 - ------------------------------------------------------------------------------- Expenses Paid $ 3.63 $ 2.78 During Period* - ------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 0.72% and 0.55%, for Class A and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). 10 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Hypothetical Example for Comparison Purposes The table below provides information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the Fund's actual return. 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 the 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 tables are meant to highlight your ongoing costs only and do not reflect any transaction costs, such as sales charges (loads) that are charged at the time of the transaction. Therefore, the table below 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 transaction costs were included, your costs would have been higher. Expenses Paid on a $1,000 Investment in Pioneer Tax Free Money Market Fund Based on a hypothetical 5% per year return before expenses, reflecting the period from July 1, 2008 through December 31, 2008. Share Class A Y Beginning Account $ 1,000.00 $ 1,000.00 Value on 7/1/08 - ------------------------------------------------------------------------------- Ending Account $ 1,021.52 $ 1,022.37 Value on 12/31/08 - ------------------------------------------------------------------------------- Expenses Paid $ 3.66 $ 2.80 During Period* - ------------------------------------------------------------------------------- * Expenses are equal to the Fund's annualized expense ratio of 0.72% and 0.55%, for Class A and Class Y shares, respectively, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 11 Schedule of Investments | 12/31/08 Floating S&P/Moody's Principal Rate (b) Ratings Amount (unaudited) (unaudited) Value MUNICIPAL BONDS -- 83.5% MISCELLANEOUS -- 2.1% Miscellaneous $ 3,525,000 AAA/Aaa Henrico County Virginia, 5.0% 12/01/09 $ 3,656,788 ------------ Miscellaneous $ 3,656,788 - --------------------------------------------------------------------------------------------------------- GOVERNMENT -- 81.4% Government -- 8.0% 610,000 3.40 AAA/Aa1 Guilford County North Carolina, Floating Rate Note, 4/1/23 $ 610,000 6,000,000 SP-1/MIG1 Texas State Tax & Revenue Anticipation Note, 3.0%, 8/28/09 6,052,738 3,700,000 1.15 AAA/Aaa Wake County North Carolina, Floating Rate Note, 4/1/21 3,700,000 2,485,000 1.20 AA+/NR Washington State Putters-Ser, Floating Rate Note, 7/1/13 2,485,000 1,000,000 AAA/Aa1 Washington State Various Purposes General, 5.0%, 1/1/09 1,000,000 ------------ $ 13,847,738 - --------------------------------------------------------------------------------------------------------- Municipal Airport -- 0.9% 1,630,000 1.10 AA-/NA Sarasota-Manatee Airport Authority Florida, Floating Rate Note, 8/1/14 $ 1,630,000 - --------------------------------------------------------------------------------------------------------- Municipal Development -- 7.8% 2,000,000 0.85 AAA/Aa3 Albemarle County Virginia Industrial Development Authority, Floating Rate Note, 8/1/37 $ 2,000,000 2,500,000 1.05 AA/Aa1 Jackson County Mississippi, Floating Rate Note, 6/1/23 2,500,000 3,000,000 0.85 AA-/Aa1 Pima County Arizona Industrial Development Authority, Floating Rate Note, 12/1/22 3,000,000 800,000 1.05 AAA/Aa1 Syracuse New York, Industrial Development Agency, Floating Rate Note, 12/1/37 800,000 2,400,000 1.10 AA/Aa1 Valdez Alaska Marine Revenue, Floating Rate Note, 6/1/37 2,400,000 2,900,000 1.10 AA+/Aa1 Valdez Alaska Marine Term, Floating Rate Note, 7/1/37 2,900,000 ------------ $ 13,600,000 - --------------------------------------------------------------------------------------------------------- Municipal Education -- 4.6% 4,000,000 1.10 AA/NR Broward County Florida, Floating Rate Note, 4/1/24 $ 4,000,000 1,000,000 AAA/AA1 Florida State Board of Education, 5.0%, 6/1/09 1,012,233 3,000,000 1.20 AA-/NA Illinois Financial Authority Revenue, Floating Rate Note, 9/1/41 3,000,000 ------------ $ 8,012,233 - --------------------------------------------------------------------------------------------------------- The accompanying notes are an integral part of these financial statements. 12 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Floating S&P/Moody's Principal Rate (b) Ratings Amount (unaudited) (unaudited) Value Municipal Facilities -- 4.8% $ 2,000,000 1.10 NR/Aa2 Clarksville Tennessee Public, Floating Rate Note, 1/1/33 $ 2,000,000 2,495,000 1.10 NR/Aa2 Clarksville Tennessee Public, Floating Rate Note, 7/1/34 2,495,000 700,000 1.30 NR/Aa2 Holland Creek Metropolitan District Colorado, Floating Rate Note, 6/1/41 700,000 1,000,000 0.75 AA+/NR Oregon State Facilities Authority Revenue, Floating Rate Note, 8/1/34 1,000,000 2,225,000 1.30 AA+/NR Richland Washington Golf Enterprise Revenue, Floating Rate Note, 12/1/21 2,225,000 ------------ $ 8,420,000 - --------------------------------------------------------------------------------------------------------- Municipal General -- 1.6% 1,000,000 0.75 AAA/Aa1 Illinois Finance Authority, Floating Rate Note, 7/1/32 $ 1,000,000 750,000 AAA/Aaa North Carolina State, 5.0%, 3/1/09 754,157 1,000,000 AAA/Aaa Wake County North Carolina, 3.5%, 10/15/09 1,013,868 ------------ $ 2,768,025 - --------------------------------------------------------------------------------------------------------- Municipal Higher Education -- 11.2% 4,000,000 0.90 AAA/Aa1 District of Columbia University Revenue, Floating Rate Note, 4/1/41 $ 4,000,000 2,000,000 0.85 AA-/Aa3 Maryland State Health & Higher Education, Floating Rate Note, 12/1/23 2,000,000 2,265,000 1.15 AA+/Aa2 Maryland State Health & Higher, Floating Rate Note, 7/1/34 2,265,000 2,700,000 0.90 AAA/Aaa Missouri State Health & Educational Facility, Floating Rate Note, 3/1/40 2,700,000 430,000 1.32 AAA/Aaa New Hampshire Health & Educational Facility, Floating Rate Note, 1/1/28 430,000 4,990,000 1.10 AA+/Aa2 University of Michigan, Floating Rate Note, 12/1/37 4,990,000 1,520,000 AA-/Aa3 University North Carolina Hospital Chapel Hill, 5.0%, 2/1/09 1,522,886 1,500,000 AAA/Aaa University of Texas, 1.1% 07/01/37 1,500,000 ------------ $ 19,407,886 - --------------------------------------------------------------------------------------------------------- Municipal Medical -- 19.0% 1,000,000 0.80 AAA/Aa1 Aurora Colorado Hospital Revenue, Floating Rate Note, 12/1/33 $ 1,000,000 400,000 1.05 AA-/AA3 Charlotte-Mecklenburg Hospital Authority, Floating Rate Note, 1/15/26 400,000 200,000 0.90 AA/Aa1 Elmhurst Illinois, Floating Rate Note, 7/1/18 200,000 5,100,000 0.95 AA/Aaa Harris County Texas Health, Floating Rate Note, 12/01/41 5,100,000 2,100,000 0.95 AA/Aaa Harris County Texas Health, Floating Rate Note, 12/01/41 2,100,000 The accompanying notes are an integral part of these financial statements. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 13 Schedule of Investments | 12/31/08 (continued) Floating S&P/Moody's Principal Rate (b) Ratings Amount (unaudited) (unaudited) Value Municipal Medical -- continued $ 3,000,000 1.27 AA-/Aa3 Highlands County Florida Health Facilities Revenue, Floating Rate Note, 11/15/35 $ 3,000,000 2,185,000 1.00 AAA/Aaa Loudoun County Virginia Industrial Development Authority, Floating Rate Note, 2/15/38 2,185,000 600,000 0.60 AAA/Aaa Loudoun County Virginia Industrial Development Authority, Floating Rate Note, 2/15/38 600,000 1,400,000 1.27 AA-/AAA Maryland Health Department, Floating Rate Note, 7/1/28 1,400,000 1,775,000 0.70 AA/Aa2 Maryland State Health & Higher Educational Facilities Authority Revenue, Floating Rate Note, 7/1/36 1,775,000 5,700,000 1.20 NR/A1 New Hampshire Health & Education, Floating Rate Note, 7/1/35 5,700,000 1,200,000 0.80 NR/Aa1 Nueces County Texas Health Facilities Development Corp., Revenue, Floating Rate Note, 7/1/15 1,200,000 1,300,000 0.80 AAA/Aa1 Washington State Health Care Facilities, Floating Rate Note, 10/1/28 1,300,000 5,200,000 0.80 AA+/Aaa Washington State Health Care Facilities, Floating Rate Note, 10/1/28 5,200,000 2,000,000 0.80 AAA/Aaa Wisconsin State Health & Educational Facilities, Floating Rate Note, 12/1/33 2,000,000 ------------ $ 33,160,000 - --------------------------------------------------------------------------------------------------------- Municipal Pollution -- 4.8% 4,000,000 0.75 AA-/Aaa Apache County Arizona Industrial Development Authority, Floating Rate Note, 12/15/18 $ 4,000,000 950,000 1.15 AA/NR Hammond Indiana Pollution Center, Floating Rate Note, 2/1/22 950,000 1,590,000 1.10 AA/Aa1 Hurley New Mexico Pollution, Floating Rate Note, 12/1/15 1,590,000 1,000,000 0.80 AAA/Aa1 Pleasant Prairie Wisconsin Pollution, Floating Rate Note, 9/1/30 1,000,000 785,000 2.00 A/A1 Sabine River Industrial Development Authority Texas, Floating Rate Note, 8/15/14 785,000 ------------ $ 8,325,000 - --------------------------------------------------------------------------------------------------------- Municipal Power -- 1.7% 3,000,000 1.10 NR/Aaa Florida State Municipal Power Agency, Floating Rate Note, 10/1/30 $ 3,000,000 - --------------------------------------------------------------------------------------------------------- Municipal Transportation -- 2.5% 1,500,000 1.15 AA/P-1 JP Morgan Chase Putter, 1.07%, 4/15/10 $ 1,500,000 1,500,000 1.22 AAA/Aaa Orlando & Orange County Expressway, Floating Rate Note, 07/01/40 1,500,000 The accompanying notes are an integral part of these financial statements. 14 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Floating S&P/Moody's Principal Rate (b) Ratings Amount (unaudited) (unaudited) Value Municipal Transportation -- continued $ 1,100,000 1.05 AA/Aa1 Port Arthur Texas Navigation District, Floating Rate Note, 10/1/24 $ 1,100,000 300,000 1.10 AA/Aa1 Valdez Alaska Marine Term, Floating Rate Note, 7/1/37 300,000 ------------ $ 4,400,000 - --------------------------------------------------------------------------------------------------------- Municipal Utilities -- 9.3% 6,800,000 1.15 AA/Aa2 Boston Massachusetts Water & Sewer Commerce Revenue, Floating Rate Note, 11/1/24 $ 6,800,000 870,000 0.80 AA/Aa2 Gainesville Florida Utilities, Floating Rate Note, 10/1/38 870,000 300,000 1.15 AA/Aa2 Gainesville Utilities, Floating Rate Note, 10/1/26 300,000 990,000 1.15 NR/Aaa Lancaster Port Authority Ohio, Floating Rate Note, 5/1/38 990,000 7,200,000 1.05 NR/Aa2 Southeast, Alabama Gas District, Floating Rate Note, 8/1/27 7,200,000 ------------ $ 16,160,000 - --------------------------------------------------------------------------------------------------------- Municipal Water -- 5.2% 2,500,000 3.10 AA+/Aa1 Las Vegas Nevada Water, Floating Rate Note, 6/1/36 $ 2,500,000 3,325,000 1.10 AA+/Aa1 Las Vegas Nevada Water, Floating Rate Note, 6/1/36 3,325,000 3,164,000 1.30 AAA/Aaa Texas Water Development Board, Floating Rate Note, 7/15/19 3,164,000 ------------ $ 8,989,000 - --------------------------------------------------------------------------------------------------------- TOTAL MUNICIPAL BONDS $141,719,882 ------------ (Cost $145,376,670) $145,376,670 - --------------------------------------------------------------------------------------------------------- COMMERCIAL PAPER -- 15.6% 5,000,000 A-1+/P-1 Board of Governors of the University, 0.75%, 4/3/09 $ 5,000,000 2,000,000 NR/NR City of Burlington Kansas, 0.93% 01/14/09 2,000,000 1,500,000 A-1+/P-1 City of Burlington Kansas, 0.93%, 2/3/09 1,500,000 2,600,000 A-1+/P-1 City of Burlington Kansas, 1.55%, 1/13/09 2,600,000 6,000,000 NR/NR City of Jacksonville Florida, 0%, 3/2/09 6,000,000 1,000,000 A-1+/NR City of Jacksonville, 0%, 01/14/09 1,000,000 1,000,000 A-1+/NR City of Jacksonville, 0.88%, 1/14/09 1,000,000 1,000,000 NR/NR Texas Public Financial Authority, 0%, 1/14/09 1,000,000 1,985,000 A-1+/P-1 University of Texas, 0%, 2/25/09 1,985,000 The accompanying notes are an integral part of these financial statements. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 15 Schedule of Investments | 12/31/08 (continued) Floating S&P/Moody's Principal Rate (b) Ratings Amount (unaudited) (unaudited) Value COMMERCIAL PAPER -- continued $ 5,000,000 NR/NR Vanderbilt University, 1.2%, 2/5/09 $ 5,000,000 ------------ $ 27,085,000 - --------------------------------------------------------------------------------------------------------- TOTAL COMMERCIAL PAPER $ 27,085,000 ------------ (Cost $27,085,000) $ 27,085,000 - --------------------------------------------------------------------------------------------------------- Shares MUTUAL FUND -- 0.0% 729 1.30 Blackrock Liquidity Funds Municipal Fund Portfolio $ 729 - --------------------------------------------------------------------------------------------------------- TOTAL MUTUAL FUND (Cost $729) $ 729 - --------------------------------------------------------------------------------------------------------- TOTAL INVESTMENT IN SECURITIES -- 99.0% (Cost $172,462,400) (a) $172,462,400 - --------------------------------------------------------------------------------------------------------- OTHER ASSETS AND LIABILITIES -- 1.0% $ 1,690,109 - --------------------------------------------------------------------------------------------------------- TOTAL NET ASSETS -- 100.0% $174,152,509 ========================================================================================================= (a) At December 31, 2008 cost for federal income tax purpose was $172,462,400. (b) The rate shown is the rate at period end. NR Not Rated by either S&P or Moody's. Various inputs are used in determining the value of the Portfolio's investments. These inputs are summarized in the three broad levels listed below. Highest priority is given to Level 1 inputs and lowest priority is given to Level 3. Level 1 -- quoted prices in active markets for identical securities Level 2 -- other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.) Level 3 -- significant unobservable inputs (including the Portfolio's own assumptions in determining fair value of investments) The following is a summary of the inputs used as of December 31, 2008, in valuing the Portfolio's assets: Investments Valuation Inputs in Securities Level 1 -- Quoted Prices $ -- Level 2 -- Other Significant Observable Inputs $ 172,462,400 Level 3 -- Significant Unobservable Inputs -- - ------------------------------------------------------------------------------- Total $ 172,462,400 =============================================================================== The accompanying notes are an integral part of these financial statements. 16 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Statement of Assets and Liabilities | 12/31/08 ASSETS: Investment in securities (cost $172,462,400) $172,462,400 Cash 1,351,089 Receivables -- Fund shares sold 118,104 Dividends, interest 334,928 Other 53,592 - ---------------------------------------------------------------------- Total assets $174,320,113 - ---------------------------------------------------------------------- LIABILITIES: Payables -- Fund shares repurchased $ 241 Dividends 76,530 Due to affiliates 7,202 Auditing 29,124 Miscellaneous 14,185 Custodian 13,671 Printing 11,655 Insurance 10,494 Accrued expenses 4,502 - ---------------------------------------------------------------------- Total liabilities $ 167,604 - ---------------------------------------------------------------------- NET ASSETS: Paid-in capital $174,209,558 Distribution in excess of net investment income (30,085) Accumulated net realized loss on investments (26,964) - ---------------------------------------------------------------------- Total net assets $174,152,509 ====================================================================== NET ASSET VALUE PER SHARE: (No par value, Unlimited number of shares authorized) Class A (based on $70,331,042/70,339,070 shares) $ 1.00 Class Y (based on $103,821,467/103,833,696 shares) $ 1.00 ====================================================================== The accompanying notes are an integral part of these financial statements. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 17 Statement of Operations For the Year Ended 12/31/2008 INVESTMENT INCOME: Interest $3,683,592 Other Income 313,233 - -------------------------------------------------------------------------------------- Total investment income $3,996,825 - -------------------------------------------------------------------------------------- EXPENSES: Management fees $ 696,780 Transfer agent fees Class A 11,276 Distribution fees Class A 116,135 Administrative fees 52,396 Custodian fees 5,515 Registration fees 44,377 Professional fees 79,434 Printing expense 22,643 Fees and expenses of nonaffiliated trustees 5,775 Miscellaneous 48,694 - -------------------------------------------------------------------------------------- Total expenses $1,083,025 Less fees paid indirectly (296) - -------------------------------------------------------------------------------------- Net expenses $1,082,729 - -------------------------------------------------------------------------------------- Net investment income $2,914,096 - -------------------------------------------------------------------------------------- REALIZED AND UNREALIZED LOSS ON INVESTMENTS Net realized loss on Investments $ (730) - -------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $2,913,366 ====================================================================================== The accompanying notes are an integral part of these financial statements. 18 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Statements of Changes in Net Assets For the Years Ended 12/31/2008 and 12/31/2007, respectively Year Ended Year Ended 12/31/2008 12/31/2007 FROM OPERATIONS: Net investment income $ 2,914,096 $ 5,732,842 Net realized gain (loss) on investments (730) 402 - --------------------------------------------------------------------------------------------- Net increase in net assets resulting from operations $ 2,913,366 $ 5,733,244 - --------------------------------------------------------------------------------------------- DISTRIBUTIONS TO SHAREOWNERS: Net investment income: Class A ($0.0157 and $0.0299 per share, respectively) $ (1,143,102) $ (2,433,164) Class Y ($0.0174 and $0.0320 per share, respectively) (1,789,000) (3,311,757) - --------------------------------------------------------------------------------------------- Total distributions to shareowners $ (2,932,102) $ (5,744,921) - --------------------------------------------------------------------------------------------- FROM FUND SHARE TRANSACTIONS: Net proceeds from sale of shares $374,175,942 $ 428,959,997 Reinvestment of distributions 749,252 1,558,526 Cost of shares repurchased (387,714,720) $(437,445,730) - --------------------------------------------------------------------------------------------- Net decrease in net assets resulting from fund share transactions $(12,789,526) $ (6,927,207) - --------------------------------------------------------------------------------------------- Net decrease in net assets $(12,808,262) $ (6,938,884) NET ASSETS: Beginning of year 186,960,771 193,899,655 - --------------------------------------------------------------------------------------------- End of year $174,152,509 $ 186,960,771 - --------------------------------------------------------------------------------------------- Distributions in excess of net investment income $ (30,085) $ (12,079) ============================================================================================= The accompanying notes are an integral part of these financial statements. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 19 Statements of Changes in Net Assets (continued) '08 Shares '08 Amount '07 Shares '07 Amount Class A Shares sold 220,983,959 $ 220,983,959 293,983,129 $ 293,983,129 Reinvestment of distributions 749,193 749,193 1,558,526 1,558,526 Less shares repurchased (222,958,098) (222,958,098) (296,819,723) (296,819,723) - ----------------------------------------------------------------------------------------------------- Net decrease (1,224,946) $ (1,224,946) (1,278,068) $ (1,278,068) ===================================================================================================== Class Y Shares sold 153,191,983 $ 153,191,983 134,976,868 $ 134,976,868 Reinvestment of distributions 59 59 -- -- Less shares repurchased (164,756,622) (164,756,622) (140,626,007) (140,626,007) - ----------------------------------------------------------------------------------------------------- Net decrease (11,564,580) $ (11,564,580) (5,649,139) $ (5,649,139) ===================================================================================================== The accompanying notes are an integral part of these financial statements. 20 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Financial Highlights Year Ended Year Ended 12/31/08 12/31/07 Class A (a) Net asset value, beginning of period $ 1.0000 $ 1.0000 - --------------------------------------------------------------------------------------------------------- Increase from investment operations: Net investment income $ 0.0157 $ (0.0299) - --------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income (0.0157) 0.0299 Net realized and unrealized gain (loss) on investments 0.0000 0.0003 - --------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 1.0000 $ 1.0003 ========================================================================================================= Total return* 1.58% 3.03% Ratio of net expenses to average net assets+ 0.72% 0.65% Ratio of net investment income to average net assets+ 1.56% 2.96% Net assets, end of period (in thousands) $ 70,331 $ 71,568 Ratios with no waiver of management fees and assumptions of expense by PIM and no reductions for fees paid indirectly: Net expenses 0.72% 0.65% Net investment income 1.56% 2.96% Ratios with waiver of management fees and assumptions of expense by PIM and no reductions for fees paid indirectly: Net expenses 0.72% 0.64% Net investment income 1.56% 2.96% ========================================================================================================= Year Ended Year Ended 12/11/04 (a) 12/31/06 12/31/05 to 12/31/04 Class A (a) Net asset value, beginning of period $ 1.0000 $ 1.0000 $ 1.0000 - --------------------------------------------------------------------------------------------------------------------------- Increase from investment operations: Net investment income $ 0.0270 $ 0.0126 $ 0.0004 - --------------------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income (0.0270) (0.0126) (0.0004) Net realized and unrealized gain (loss) on investments -- -- -- - --------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 1.0000 $ 1.0000 $ 1.0000 =========================================================================================================================== Total return* 2.76% 1.28% 0.04%(b) Ratio of net expenses to average net assets+ 0.75% 0.78% 0.94%** Ratio of net investment income to average net assets+ 2.82% 1.75% 1.38%** Net assets, end of period (in thousands) $ 72,854 $ 31,232 $ 317 Ratios with no waiver of management fees and assumptions of expense by PIM and no reductions for fees paid indirectly: Net expenses 0.75% 0.81% 1.17%** Net investment income 2.82% 1.72% 1.15%** Ratios with waiver of management fees and assumptions of expense by PIM and no reductions for fees paid indirectly: Net expenses 0.75% 0.78% --** Net investment income 2.82% 1.75% --** =========================================================================================================================== (a) Class I shares were first publicly offered on December 11, 2004. (b) Not annualized. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratio with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 21 Financial Highlights (continued) Year Ended Year Ended 12/31/08 12/31/07 Class Y (a) Net asset value, beginning of period $ 1.0000 $ 1.0000 - --------------------------------------------------------------------------------------------------------- Increase from investment operations: Net investment income $ 0.0174 $ 0.0320 - --------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income (0.0174) (0.0320) Net realized and unrealized gain (loss) on investments 0.00 -- - --------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 1.0000 $ 1.0000 ========================================================================================================= Total return* 1.75% 3.19% Ratio of net expenses to average net assets+ 0.55% 0.44% Ratio of net investment income to average net assets+ 1.75% 3.16% Net assets, end of period (in thousands) $ 103,821 $ 115,393 Ratios with no waiver of management fees and assumptions of expense by PIM and no reductions for fees paid indirectly: Net expenses 0.55% 0.44% Net investment income 1.75% 3.16% Ratios with waiver of management fees and assumptions of expense by PIM and no reductions for fees paid indirectly: Net expenses 0.55% 0.44% Net investment income 1.75% 3.16% ========================================================================================================= Year Ended 9/23/05 (a) 12/31/06 to 12/31/05 Class Y (a) Net asset value, beginning of period $ 1.0000 $ 1.0000 - ------------------------------------------------------------------------------------------------------------- Increase from investment operations: Net investment income $ 0.0284 $ 0.0054 - ------------------------------------------------------------------------------------------------------------- Distributions to shareowners: Net investment income (0.0284) (0.0054) Net realized and unrealized gain (loss) on investments -- -- - ------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 1.0000 $ 1.0000 ============================================================================================================= Total return* 2.99% 0.54% Ratio of net expenses to average net assets+ 0.57% 0.56%** Ratio of net investment income to average net assets+ 2.99% 1.96%** Net assets, end of period (in thousands) $ 121,046 $ 91,177 Ratios with no waiver of management fees and assumptions of expense by PIM and no reductions for fees paid indirectly: Net expenses 0.57% 0.56%** Net investment income 2.99% 1.96%** Ratios with waiver of management fees and assumptions of expense by PIM and no reductions for fees paid indirectly: Net expenses 0.57% 0.56%** Net investment income 2.99% 1.96%** ============================================================================================================= (a) Class Y shares were first publicly offered on September 23, 2005. * Assumes initial investment at net asset value at the beginning of each period, reinvestment of all distributions, the complete redemption of the investment at net asset value at the end of each period, and no sales charges. Total return would be reduced if sales charges were taken into account. ** Annualized. + Ratio with no reduction for fees paid indirectly. The accompanying notes are an integral part of these financial statements. 22 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Notes to Financial Statements | 12/31/08 1. Organization and Significant Accounting Policies Pioneer Tax Free Money Market Fund (the Fund), is one of seven series of portfolios comprising Pioneer Series Trust II, a Delaware statutory trust registered under the Investment Company Act of 1940 as a diversified, open-end management investment company. Class Y shares were first publicly offered on September 23, 2005. The investment objective of the Fund is to provide current income, exempt from federal income tax, as is consistent with the preservation of capital. The Fund offers two classes of shares -- Class A and Class Y shares. Shares of each class represent an interest in the same portfolio of investments of the Fund and have identical rights (based on relative net asset values) to assets and liquidation proceeds. Share classes can bear different class-specific fees and expenses such as transfer agent and distribution fees. Differences in class-specific fees and expenses will result in differences in net investments income and, therefore, the payment of different dividends by each class. The Amended and restated Declaration of Trust of the Fund gives the Board the flexibility to specify either per share voting or dollar-weighted voting when submitting matters for shareholder approval. Under per share voting, a shareholder's voting power is determined not by the number of shares owned, but by the dollar value of the shares on the record date. Share classes have exclusive voting rights with respect to matters affecting only that class, including with respect to the distribution plan for that class. The Fund's prospectuses contain unaudited information regarding the Fund's principal risks. Please refer to these documents when considering the Fund's principal risks. Investments in the Fund are subject to possible loss due to the financial failure of underlying securities and their inability to meet their debt obligations. The Fund's financial statements have been prepared in conformity with U.S. generally accepted accounting principles that require the management of the Fund to, among other things, make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income, expenses and gains and losses on investments during the reporting periods. Actual results could differ from those estimates. The following is a summary of significant accounting policies followed by the Fund in preparation of its financial statements, which are consistent with those policies generally accepted in the investment company industry: Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 23 A. Security Valuation Security transactions are recorded as of trade date. Securities are valued at amortized cost, which approximates fair market value. Investments purchased at a discount or premium are valued by amortizing the difference between the original purchase price and maturity value of the issue over the period to maturity. Interest income, including interest on income bearing cash accounts, is recorded on the accrual basis. B. Federal Income Taxes It is the Fund's policy to comply with the requirements of the Internal Revenue Code applicable to regulated investment companies and to distribute all of its taxable income and net realized capital gains, if any, to its shareowners. Therefore, no federal income tax provision is required. Tax years for the prior three fiscal years remain subject to examination by tax authorities. At December 31, 2008, the Fund has reclassified $74,496 to decrease paid in capital, $74,496 to decrease accumulated net realized loss on investments. The reclassification has no impact on the net assets of the Fund and presents the Fund's capital accounts on a tax basis. At December 31, 2008 the Fund had a net capital loss carryforward of $26,964 of which the following amounts will expire between 2010 and 2016 if not utilized; $14,681 in 2010, $56 in 2011, $6,547 in 2012, $4,950 in 2014 and $730 in 2016. The tax character of distributions paid during the years ended December 31, 2008 and 2007 was as follows: 2008 2007 Distributions paid from: Ordinary income $ 228,871 $ -- Tax exempt income 2,703,231 5,744,921 - ------------------------------------------------------------------------------- Total $2,932,102 $5,744,921 =============================================================================== The following shows the components of distributable earnings on a federal income tax basis at December 31, 2008: 2008 Distributable earnings: Capital loss carryforward $ (26,964) Current year net dividend payable (30,085) - ------------------------------------------------------------------------------- Total $ (57,049) =============================================================================== 24 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 C. Fund Shares The Fund records sales and repurchases of its shares as of trade date. The Fund declares as daily dividends substantially all of its net investment income. All dividends are paid on a monthly basis. Short-term capital gain distributions, if any, may be declared with the daily dividends. D. Class Allocations Income, common expenses and realized and unrealized gains and losses are calculated at the Fund level and allocated daily to each class of shares based on the respective percentage of adjusted net assets at the beginning of the day. Distribution fees are calculated based on the average daily net asset value attributable to Class A shares of the Fund (see Note 4). Class Y shares are not subject to a distribution plan. Shareowners of each class share all expenses and fees paid to the transfer agent, Pioneer Investment Management Shareholder Services, Inc. (PIMSS), for its services, which are allocated based on the number of accounts in each class and the ratable allocation of related out-of-pocket expenses (see Note 3). Distributions to shareowners are recorded as of the ex-dividend date. Distributions paid by the Fund with respect to each class of shares are calculated in the same manner, at the same time, and in the same amount, except that Class A and Class Y shares bear different transfer agent and distribution expense rates. 2. Management Agreement Pioneer Investment Management, Inc. (PIM), a wholly-owned indirect subsidy of UniCredit, S.p.A., (UniCredit), manages the Fund's portfolio. Management fees are calculated daily at the annual rate of 0.40% of the Fund's average daily net assets up to $1 billion and 0.35% on assets over $1 billion. For the year ended December 31, 2008, the management fee was equivalent to a rate of 0.40% of average daily net assets. In addition, under the management and administration agreements, certain other services and costs, including accounting, regulatory reporting and insurance premiums, are paid by the Fund. Included in "Due to Affiliates" reflected on the Statement of Assets and Liabilities is $1,743 in management fees, administrative cost and certain other services payable to PIM at December 31, 2008. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 25 3. Transfer Agent PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially all transfer agent and shareowner services to the Fund at negotiated rates. Included in "Due to Affiliates" is $5,167 in transfer agent fees payable to PIMSS at December 31, 2008. 4. Distribution and Service Plans The Fund adopted a Distribution plan pursuant to Rule 12b-1 of the Investment Company Act of 1940, with respect to its Class A and Class Y shares. Pursuant to the Plan, the Fund pays Pioneer Funds Distributor, Inc. (PFD), 0.15% of the average daily net assets attributable to Class A shares as compensation for personal services and/or account maintenance services or distribution services with regard to Class A shares. Prior to February 1, 2008, PFD was reimbursed under the Distribution Plan for distribution expenses in an amount of up to 0.15% of the average daily net assets attributable to Class A shares. Included in "Due to Affiliates" is $292 in distribution fees payable to PFD at December 31, 2008. In addition, redemptions of Class A shares may be subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be imposed on redemptions of certain net asset value purchases of Class A shares within 18 months of purchase. Proceeds from the CDSCs are paid to PFD. For the year ended December 31, 2008, no CDSC's were paid to PFD. 5. Expense Offsets The Fund has entered into certain expense offset arrangements with PIMSS resulting in a reduction in the Fund's total expenses, due to interest earned on cash held by PIMSS. For the year ended December 31, 2008, the Fund's expenses were reduced by $296 under such arrangements. 6. Money Market Temporary Guarantee Program Fees The Fund has enrolled in the U.S. Treasury Department's Temporary Guarantee Program for Money Market Funds (the "Program"). The Program provides a guarantee to participating money market fund shareholders based on the number of shares invested in the Fund at the close of business on September 19, 2008. The guarantee would be triggered in the event the market-based net asset value of a participating fund falls below $0.995 and that situation has not been cured. Recovery under the Program would require the Fund to liquidate. Upon liquidation, and subject to the availability of assets under the Program, eligible shareholders would be entitled to receive a payment equal to any shortfall between the amount received by a shareholder in liquidation and $1.00 per share. Only shareholders of record as of September 19, 2008 would be eligible to receive the benefit of the guarantee. Any increase in the number of shares held 26 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 in the Fund in excess of shares held at the close of business on September 19, 2008 will not be covered. If the number of shares held in an account fluctuates over the period, shareholders will be covered for either the number of shares held as of the close of business on September 19, 2008 or the number of shares held on the date of the trigger event, whichever is less. If a shareholder's account is closed with the Fund or a broker-dealer, any future investments in the Fund will not be guaranteed. The Treasury has extended the Program's expiration date from December 18, 2008 to April 30, 2009. The Treasury has discretion to continue the Program until September 18, 2009. In order to participate in the initial three month period and the extended period of the Program, the Fund paid to the U.S. Treasury Department fees in the amount of 0.01% and 0.015% of the Fund's net asset value as of the close of business on September 19, 2008, respectively. These expenses will be borne by the Fund without regard to any expense limitation currently in effect for the Fund and are reflected in the statement of operations. 7. New Pronouncement In March 2008, Statement of Financial Accounting Standards No. 161, Disclosures about Derivative Instruments and Hedging Activities ("SFAS 161"), was issued and is effective for fiscal years beginning after November 15, 2008. SFAS 161 requires enhanced disclosures about an entity's derivative and hedging activities. Management is currently evaluating the impact the adoption of SFAS 161 will have on the Fund's financial statement disclosures. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 27 Report of Independent Registered Public Accounting Firm To the Board of Trustees of Pioneer Series Trust II and Shareowners of Pioneer Tax Free Money Market Fund: - -------------------------------------------------------------------------------- We have audited the accompanying statement of assets and liabilities of Pioneer Tax Free Money Market Fund, one of the series comprising the Pioneer Series Trust II (the "Trust"), including the schedule of investments, as of December 31, 2008, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and the financial highlights for each of the periods indicated therein. These financial statements and financial highlights are the responsibility of the Trust's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the Trust's internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Trust's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of December 31, 2008, by correspondence with the custodian. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Pioneer Tax Free Money Market Fund of Pioneer Series Trust II at December 31, 2008, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and financial highlights for each of the periods indicated therein, in conformity with U.S. generally accepted accounting principles. /s/ Ernst & Young LLP Boston, Massachusetts February 24, 2009 28 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 ADDITIONAL INFORMATION (unaudited) The percentage of the Fund's ordinary income distributions that are exempt from nonresident alien (NRA) tax withholding resulting from qualified interest income was 91.67%. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 29 Trustees, Officers and Service Providers Investment Adviser Pioneer Investment Management, Inc. Custodian Brown Brothers Harriman & Co. Independent Registered Public Accounting Firm Ernst & Young LLP Principal Underwriter Pioneer Funds Distributor, Inc. Legal Counsel Bingham McCutchen LLP Shareowner Services and Transfer Agent Pioneer Investment Management Shareholder Services, Inc. Proxy Voting Policies and Procedures of the Fund are available without charge, upon request, by calling our toll free number (1-800-225-6292). Information regarding how the Fund voted proxies relating to portfolio securities during the most recent 12-month period ended June 30 is publicly available to shareowners at www.pioneerinvestments.com. This information is also available on the Securities and Exchange Commission's web site at http://www.sec.gov. Trustees and Officers The Board of Trustees provides broad supervision over the Fund's affairs. The officers of the Fund are responsible for the Fund's operations. The Trustees and officers are listed below, together with their principal occupations during the past five years. Trustees who are interested persons of the Fund within the meaning of the 1940 Act are referred to as Interested Trustees. Trustees who are not interested persons of the Fund are referred to as Independent Trustees. Each of the Trustees serves as a trustee of each of the 76 U.S. registered investment portfolios for which Pioneer serves as investment adviser (the "Pioneer Funds"). The address for all Trustees and all officers of the Fund is 60 State Street, Boston, Massachusetts 02109. 30 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Interested Trustees Position Held Length of Service Name and Age with the Fund and Term of Office John F. Cogan, Jr. (82)* Chairman of the Board, Trustee since 2005. Trustee and President Serves until a successor trustee is elected or earlier retirement or removal. - ------------------------------------------------------------------------------- Daniel K. Kingsbury (50)* Trustee and Executive Trustee since 2008. Vice President Serves until a successor trustee is elected or earlier retirement or removal. - ------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Trustee John F. Cogan, Jr. (82)* Deputy Chairman and a Director of Pioneer Global Asset None Management S.p.A. ("PGAM"); Non-Executive Chairman and a Director of Pioneer Investment Management USA Inc. ("PIM-USA"); Chairman and a Director of Pioneer; Chairman and Director of Pioneer Institutional Asset Management, Inc. (since 2006); Director of Pioneer Alternative Investment Management Limited (Dublin); President and a Director of Pioneer Alternative Investment Management (Bermuda) Limited and affiliated funds; Director of PIOGLOBAL Real Estate Investment Fund (Russia) (until June 2006); Director of Nano-C, Inc. (since 2003); Director of Cole Management Inc. (since 2004); Director of Fiduciary Counseling, Inc.; President and Director of Pioneer Funds Distributor, Inc. ("PFD") (until May 2006); President of all of the Pioneer Funds; and Of Counsel, Wilmer Cutler Pickering Hale and Dorr LLP - --------------------------------------------------------------------------------------------------------------------- Daniel K. Kingsbury (50)* Director, CEO and President of Pioneer Investment Management None USA Inc. (since February 2007); Director and President of Pioneer Investment Management, Inc. and Pioneer Institutional Asset Management, Inc. (since February 2007); Executive Vice President of all of the Pioneer Funds (since March 2007); Director of Pioneer Global Asset Management S.p.A. (since April 2007); Head of New Markets Division, Pioneer Global Asset Management S.p.A. (2000 - 2007) - --------------------------------------------------------------------------------------------------------------------- * Mr. Cogan and Mr. Kingsbury are Interested Trustees because they are officers or directors of the Fund's investment adviser and certain of its affiliates. Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 31 Independent Trustees Position Held Length of Service Name and Age with the Fund and Term of Office David R. Bock (65) Trustee Trustee since 2005. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------- Mary K. Bush (60) Trustee Trustee since 2005. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Trustee David R. Bock (65) Executive Vice President and Chief Financial Officer, I-trax, Inc. Director of Enterprise (publicly traded health care services company) (2004 - 2007); Community Investment, Inc. Partner, Federal City Capital Advisors (boutique merchant bank) (privately-held affordable (1997 to 2004 and 2008 - present); and Executive Vice housing finance company); President and Chief Financial Officer, Pedestal Inc. (internet- and Director of New York based mortgage trading company) (2000 - 2002) Mortgage Trust (publicly traded mortgage REIT) - ------------------------------------------------------------------------------------------------------------------------- Mary K. Bush (60) President, Bush International, LLC (international financial Director of Marriott advisory firm) International, Inc.; Director of Discover Financial Services (credit card issuer and electronic payment services); Director of Briggs & Stratton Co. (engine manufacturer); Director of UAL Corporation (airline holding company); Director of Mantech International Corporation (national security, defense, and intelligence technology firm); and Member, Board of Governors, Investment Company Institute - ------------------------------------------------------------------------------------------------------------------------- 32 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Position Held Length of Service Name and Age with the Fund and Term of Office Benjamin M. Friedman (64) Trustee Trustee since 2008. Serves until a successor trustee is elected or earlier retirement or removal - ---------------------------------------------------------------------- Margaret B.W. Graham (61) Trustee Trustee since 2005. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------------- Thomas J. Perna (58) Trustee Trustee since 2006. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------------- Marguerite A. Piret (60) Trustee Trustee since 2005. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------------- Stephen K. West (80) Trustee Trustee since 2008. Serves until a successor trustee is elected or earlier retirement or removal. - ---------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Trustee Benjamin M. Friedman (64) Professor, Harvard University Trustee, Mellon Institutional Funds Investment Trust and Mellon Institutional Funds Master Portfolio (oversees 17 portfolios in fund complex) - ---------------------------------------------------------------------------------------------------------------------------------- Margaret B.W. Graham (61) Founding Director, Vice President and Corporate Secretary, The None Winthrop Group, Inc. (consulting firm); and Desautels Faculty of Management, McGill University - ---------------------------------------------------------------------------------------------------------------------------------- Thomas J. Perna (58) Chief Executive Officer, Quadriserv, Inc. (technology products for None securities lending industry) (2008 - present) ; Private investor (2004 - 2008); and Senior Executive Vice President, The Bank of New York (financial and securities services) (1986 - 2004) - ---------------------------------------------------------------------------------------------------------------------------------- Marguerite A. Piret (60) President and Chief Executive Officer, Newbury, Piret & Company, Director of New America Inc. (investment banking firm) High Income Fund, Inc. (closed-end investment company) - ---------------------------------------------------------------------------------------------------------------------------------- Stephen K. West (80) Senior Counsel, Sullivan & Cromwell LLP (law firm) Director, The Swiss Helvetia Fund, Inc. (closed-end investment company) - ---------------------------------------------------------------------------------------------------------------------------------- Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 33 Fund Officers Position Held Length of Service Name and Age with the Fund and Term of Office Dorothy E. Bourassa (60) Secretary Since 2005. Serves at the discretion of the Board - ------------------------------------------------------------------------- Christopher J. Kelley (44) Assistant Secretary Since 2005. Serves at the discretion of the Board - ------------------------------------------------------------------------- Mark E. Bradley (49) Treasurer Since 2008. Serves at the discretion of the Board - ------------------------------------------------------------------------- Luis I. Presutti (43) Assistant Treasurer Since 2005. Serves at the discretion of the Board - ------------------------------------------------------------------------- Gary Sullivan (50) Assistant Treasurer Since 2005. Serves at the discretion of the Board - ------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Officer Dorothy E. Bourassa (60) Secretary of PIM-USA; Senior Vice President - Legal of Pioneer; None Secretary/Clerk of most of PIM-USA's subsidiaries; and Secretary of all of the Pioneer Funds since September 2003 (Assistant Secretary from November 2000 to September 2003) - ---------------------------------------------------------------------------------------------------------------------- Christopher J. Kelley (44) Associate General Counsel of Pioneer since January 2008 and None Assistant Secretary of all of the Pioneer Funds since September 2003; Vice President and Senior Counsel of Pioneer from July 2002 to December 2007 - ---------------------------------------------------------------------------------------------------------------------- Mark E. Bradley (49) Vice President - Fund Accounting, Administration and None Controllership Services of Pioneer; and Treasurer of all of the Pioneer Funds since March 2008; Deputy Treasurer of Pioneer from March 2004 to February 2008; Assistant Treasurer of all of the Pioneer Funds from March 2004 to February 2008; and Treasurer and Senior Vice President, CDC IXIS Asset Management Services from 2002 to 2003 - ---------------------------------------------------------------------------------------------------------------------- Luis I. Presutti (43) Assistant Vice President - Fund Accounting, Administration and None Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ---------------------------------------------------------------------------------------------------------------------- Gary Sullivan (50) Fund Accounting Manager - Fund Accounting, Administration None and Controllership Services of Pioneer; and Assistant Treasurer of all of the Pioneer Funds - ---------------------------------------------------------------------------------------------------------------------- 34 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 Position Held Length of Service Name and Age with the Fund and Term of Office Katherine Kim Sullivan (35) Assistant Treasurer Since 2005. Serves at the discretion of the Board - ------------------------------------------------------------------------------- Teri W. Anderholm (49) Chief Compliance Officer Since 2007. Serves at the discretion of the Board - ------------------------------------------------------------------------------- Other Directorships Name and Age Principal Occupation During Past Five Years Held by this Officer Katherine Kim Sullivan (35) Fund Administration Manager - Fund Accounting, Administration None and Controllership Services since June 2003 and Assistant Treasurer of all of the Pioneer Funds since September 2003; Assistant Vice President - Mutual Fund Operations of State Street Corporation from June 2002 to June 2003 (formerly Deutsche Bank Asset Management) - --------------------------------------------------------------------------------------------------------------------- Teri W. Anderholm (49) Chief Compliance Officer of Pioneer since December 2006 and None of all the Pioneer Funds since January 2007; Vice President and Compliance Officer, MFS Investment Management (August 2005 to December 2006); Consultant, Fidelity Investments (February 2005 to July 2005); Independent Consultant (July 1997 to February 2005) - --------------------------------------------------------------------------------------------------------------------- Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 35 This page for your notes. 36 Pioneer Tax Free Money Market Fund | Annual Report | 12/31/08 How To Contact Pioneer We are pleased to offer a variety of convenient ways for you to contact us for assistance or information. Call us for: - -------------------------------------------------------------------------------- Account Information, including existing accounts, new accounts, prospectuses, applications and service forms 1-800-225-6292 FactFone(SM) for automated fund yields, prices, account information and transactions 1-800-225-4321 Retirement plans information 1-800-622-0176 Telecommunications Device for the Deaf (TDD) 1-800-225-1997 Write to us: - -------------------------------------------------------------------------------- PIMSS, Inc. P.O. Box 55014 Boston, Massachusetts 02205-5014 Our toll-free fax 1-800-225-4240 Our internet e-mail address ask.pioneer@pioneerinvestments.com (for general questions about Pioneer only) Visit our web site: pioneerinvestments.com This report must be accompanied by a prospectus. The Fund files a complete schedule of investments with the Securities and Exchange Commission for the first and third quarters for each fiscal year on Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's web site at http://www.sec.gov. The filed form may also be viewed and copied at the Commission's Public Reference Room in Washington, DC. Information regarding the operations of the Public Reference Room may be obtained by calling 1-800-SEC-0330. ITEM 2. CODE OF ETHICS. (a) Disclose whether, as of the end of the period covered by the report, the registrant has adopted a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party. If the registrant has not adopted such a code of ethics, explain why it has not done so. The registrant has adopted, as of the end of the period covered by this report, a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer and controller. (b) For purposes of this Item, the term "code of ethics" means written standards that are reasonably designed to deter wrongdoing and to promote: (1) Honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships; (2) Full, fair, accurate, timely, and understandable disclosure in reports and documents that a registrant files with, or submits to, the Commission and in other public communications made by the registrant; (3) Compliance with applicable governmental laws, rules, and regulations; (4) The prompt internal reporting of violations of the code to an appropriate person or persons identified in the code; and (5) Accountability for adherence to the code. (c) The registrant must briefly describe the nature of any amendment, during the period covered by the report, to a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item. The registrant must file a copy of any such amendment as an exhibit pursuant to Item 10(a), unless the registrant has elected to satisfy paragraph (f) of this Item by posting its code of ethics on its website pursuant to paragraph (f)(2) of this Item, or by undertaking to provide its code of ethics to any person without charge, upon request, pursuant to paragraph (f)(3) of this Item. The registrant has made no amendments to the code of ethics during the period covered by this report. (d) If the registrant has, during the period covered by the report, granted a waiver, including an implicit waiver, from a provision of the code of ethics to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, regardless of whether these individuals are employed by the registrant or a third party, that relates to one or more of the items set forth in paragraph (b) of this Item, the registrant must briefly describe the nature of the waiver, the name of the person to whom the waiver was granted, and the date of the waiver. Not applicable. (e) If the registrant intends to satisfy the disclosure requirement under paragraph (c) or (d) of this Item regarding an amendment to, or a waiver from, a provision of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions and that relates to any element of the code of ethics definition enumerated in paragraph (b) of this Item by posting such information on its Internet website, disclose the registrant's Internet address and such intention. Not applicable. (f) The registrant must: (1) File with the Commission, pursuant to Item 10(a), a copy of its code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, as an exhibit to its annual report on this Form N-CSR; (2) Post the text of such code of ethics on its Internet website and disclose, in its most recent report on this Form N-CSR, its Internet address and the fact that it has posted such code of ethics on its Internet website; or (3) Undertake in its most recent report on this Form N-CSR to provide to any person without charge, upon request, a copy of such code of ethics and explain the manner in which such request may be made. 	See Item 10(2) ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. (a) (1) Disclose that the registrant's board of trustees has determined that the registrant either: (i) Has at least one audit committee financial expert serving on its audit committee; or (ii) Does not have an audit committee financial expert serving on its audit committee. The registrant's Board of Trustees has determined that the registrant has at least one audit committee financial expert. (2) If the registrant provides the disclosure required by paragraph (a)(1)(i) of this Item, it must disclose the name of the audit committee financial expert and whether that person is "independent." In order to be considered "independent" for purposes of this Item, a member of an audit committee may not, other than in his or her capacity as a member of the audit committee, the board of trustees, or any other board committee: (i) Accept directly or indirectly any consulting, advisory, or other compensatory fee from the issuer; or (ii) Be an "interested person" of the investment company as defined in Section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19)). Ms. Marguerite A. Piret, an independent trustee, is such an audit committee financial expert. (3) If the registrant provides the disclosure required by paragraph (a)(1) (ii) of this Item, it must explain why it does not have an audit committee financial expert. Not applicable. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. (a) Disclose, under the caption AUDIT FEES, the aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant's annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years. Audit Fees Fees for audit services provided to the Trust's seven series, including fees associated with the initial and routine filings of its Form N-1A, totaled approximately $229,700 in 2008 and $213,025 in 2007. (b) Disclose, under the caption AUDIT-RELATED FEES, the aggregate fees billed in each of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported under paragraph (a) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. Audit-Related and Other Fees There were no audit-related and other services provided to the Trust during the fiscal years ended December 31, 2008 and 2007. (c) Disclose, under the caption TAX FEES, the aggregate fees billed in each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice, and tax planning. Registrants shall describe the nature of the services comprising the fees disclosed under this category. Tax Fees Fees for tax compliance services, primarily for tax returns, totaled $58,030 in 2008 and $54,740 in 2007. (d) Disclose, under the caption ALL OTHER FEES, the aggregate fees billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this Item. Registrants shall describe the nature of the services comprising the fees disclosed under this category. N/A (e) (1) Disclose the audit committee's pre-approval policies and procedures described in paragraph (c)(7) of Rule 2-01 of Regulation S-X. PIONEER FUNDS APPROVAL OF AUDIT, AUDIT-RELATED, TAX AND OTHER SERVICES PROVIDED BY THE INDEPENDENT AUDITOR SECTION I - POLICY PURPOSE AND APPLICABILITY The Pioneer Funds recognize the importance of maintaining the independence of their outside auditors. Maintaining independence is a shared responsibility involving Pioneer Investment Management, Inc ("PIM"), the audit committee and the independent auditors. The Funds recognize that a Fund's independent auditors: 1) possess knowledge of the Funds, 2) are able to incorporate certain services into the scope of the audit, thereby avoiding redundant work, cost and disruption of Fund personnel and processes, and 3) have expertise that has value to the Funds. As a result, there are situations where it is desirable to use the Fund's independent auditors for services in addition to the annual audit and where the potential for conflicts of interests are minimal. Consequently, this policy, which is intended to comply with Rule 210.2-01(C)(7), sets forth guidelines and procedures to be followed by the Funds when retaining the independent audit firm to perform audit, audit-related tax and other services under those circumstances, while also maintaining independence. Approval of a service in accordance with this policy for a Fund shall also constitute approval for any other Fund whose pre-approval is required pursuant to Rule 210.2-01(c)(7)(ii). In addition to the procedures set forth in this policy, any non-audit services that may be provided consistently with Rule 210.2-01 may be approved by the Audit Committee itself and any pre-approval that may be waived in accordance with Rule 210.2-01(c)(7)(i)(C) is hereby waived. Selection of a Fund's independent auditors and their compensation shall be determined by the Audit Committee and shall not be subject to this policy. SECTION II - POLICY - ---------------- -------------------------------- ------------------------------------------------- SERVICE SERVICE CATEGORY DESCRIPTION SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES CATEGORY - ---------------- -------------------------------- ------------------------------------------------- I. AUDIT Services that are directly o Accounting research assistance SERVICES related to performing the o SEC consultation, registration independent audit of the Funds statements, and reporting o Tax accrual related matters o Implementation of new accounting standards o Compliance letters (e.g. rating agency letters) o Regulatory reviews and assistance regarding financial matters o Semi-annual reviews (if requested) o Comfort letters for closed end offerings - ---------------- -------------------------------- ------------------------------------------------- II. Services which are not o AICPA attest and agreed-upon procedures AUDIT-RELATED prohibited under Rule o Technology control assessments SERVICES 210.2-01(C)(4) (the "Rule") o Financial reporting control assessments and are related extensions of o Enterprise security architecture the audit services support the assessment audit, or use the knowledge/expertise gained from the audit procedures as a foundation to complete the project. In most cases, if the Audit-Related Services are not performed by the Audit firm, the scope of the Audit Services would likely increase. The Services are typically well-defined and governed by accounting professional standards (AICPA, SEC, etc.) - ---------------- -------------------------------- ------------------------------------------------- ------------------------------------- ------------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the audit period for all services and related fees pre-approved specific service reported at each regularly subcategories. Approval of the scheduled Audit Committee independent auditors as meeting. auditors for a Fund shall constitute pre approval for these services. ------------------------------------- ------------------------------------ o "One-time" pre-approval o A summary of all such for the fund fiscal year within services and related fees a specified dollar limit (including comparison to for all pre-approved specified dollar limits) specific service subcategories reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limit for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for Audit-Related Services not denoted as "pre-approved", or to add a specific service subcategory as "pre-approved" ------------------------------------- ------------------------------------ SECTION III - POLICY DETAIL, CONTINUED - ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION - ----------------------- --------------------------- ----------------------------------------------- III. TAX SERVICES Services which are not o Tax planning and support prohibited by the Rule, o Tax controversy assistance if an officer of the Fund o Tax compliance, tax returns, excise determines that using the tax returns and support Fund's auditor to provide o Tax opinions these services creates significant synergy in the form of efficiency, minimized disruption, or the ability to maintain a desired level of confidentiality. - ----------------------- --------------------------- ----------------------------------------------- - ------------------------------------- ------------------------- AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY - ------------------------------------- ------------------------- - ------------------------------------- ------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year all such services and within a specified dollar limit related fees 				 (including comparison 			 to specified dollar 			 limits) reported 			 quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for tax services not denoted as pre-approved, or to add a specific service subcategory as "pre-approved" - ------------------------------------- ------------------------- SECTION III - POLICY DETAIL, CONTINUED - ----------------------- --------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES DESCRIPTION - ----------------------- --------------------------- ----------------------------------------------- IV. OTHER SERVICES Services which are not o Business Risk Management support prohibited by the Rule, o Other control and regulatory A. SYNERGISTIC, if an officer of the Fund compliance projects UNIQUE QUALIFICATIONS determines that using the Fund's auditor to provide these services creates significant synergy in the form of efficiency, minimized disruption, the ability to maintain a desired level of confidentiality, or where the Fund's auditors posses unique or superior qualifications to provide these services, resulting in superior value and results for the Fund. - ----------------------- --------------------------- ----------------------------------------------- - --------------------------------------- ------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY - ------------------------------------- -------------------------- o "One-time" pre-approval o A summary of for the fund fiscal year within all such services and a specified dollar limit related fees 			 (including comparison 			 to specified dollar 				 limits) reported quarterly. o Specific approval is needed to exceed the pre-approved dollar limits for these services (see general Audit Committee approval policy below for details on obtaining specific approvals) o Specific approval is needed to use the Fund's auditors for "Synergistic" or "Unique Qualifications" Other Services not denoted as pre-approved to the left, or to add a specific service subcategory as "pre-approved" - ------------------------------------- -------------------------- SECTION III - POLICY DETAIL, CONTINUED - ----------------------- ------------------------- ----------------------------------------------- SERVICE CATEGORY SERVICE CATEGORY SPECIFIC PROHIBITED SERVICE SUBCATEGORIES DESCRIPTION - ----------------------- ------------------------- ----------------------------------------------- PROHIBITED SERVICES Services which result 1. Bookkeeping or other services in the auditors losing related to the accounting records or independence status financial statements of the audit under the Rule. client* 2. Financial information systems design and implementation* 3. Appraisal or valuation services, fairness* opinions, or contribution-in-kind reports 4. Actuarial services (i.e., setting actuarial reserves versus actuarial audit work)* 5. Internal audit outsourcing services* 6. Management functions or human resources 7. Broker or dealer, investment advisor, or investment banking services 8. Legal services and expert services unrelated to the audit 9. Any other service that the Public Company Accounting Oversight Board determines, by regulation, is impermissible - ----------------------- ------------------------- ----------------------------------------------- - ------------------------------------------- ------------------------------ AUDIT COMMITTEE APPROVAL POLICY AUDIT COMMITTEE REPORTING POLICY - ------------------------------------------- ------------------------------ o These services are not to be o A summary of all performed with the exception of the(*) services and related services that may be permitted fees reported at each if they would not be subject to audit regularly scheduled procedures at the audit client (as Audit Committee meeting defined in rule 2-01(f)(4)) level will serve as continual the firm providing the service. confirmation that has 				 not provided any restricted services. - ------------------------------------------- ------------------------------ - -------------------------------------------------------------------------------- GENERAL AUDIT COMMITTEE APPROVAL POLICY: o For all projects, the officers of the Funds and the Fund's auditors will each make an assessment to determine that any proposed projects will not impair independence. o Potential services will be classified into the four non-restricted service categories and the "Approval of Audit, Audit-Related, Tax and Other Services" Policy above will be applied. Any services outside the specific pre-approved service subcategories set forth above must be specifically approved by the Audit Committee. o At least quarterly, the Audit Committee shall review a report summarizing the services by service category, including fees, provided by the Audit firm as set forth in the above policy. - -------------------------------------------------------------------------------- (2) Disclose the percentage of services described in each of paragraphs (b) through (d) of this Item that were approved by the audit committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X. Non-Audit Services Beginning with non-audit service contracts entered into on or after May 6, 2003, the effective date of the new SEC pre- approval rules, the Trust's audit committee is required to pre-approve services to affiliates defined by SEC rules to the extent that the services are determined to have a direct impact on the operations or financial reporting of the Trust. For the years ended December 31, 2008 and 2007, there were no services provided to an affiliate that required the Trust's audit committee pre-approval. (f) If greater than 50 percent, disclose the percentage of hours expended on the principal accountant's engagement to audit the registrant's financial statements for the most recent fiscal year that were attributed to work performed by persons other than the principal accountant's full-time, permanent employees. N/A (g) Disclose the aggregate non-audit fees billed by the registrant's accountant for services rendered to the registrant, and rendered to the registrant's investment adviser (not including any sub-adviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for each of the last two fiscal years of the registrant. The aggregate non-audit fees for the Fund and affiliates, as previously defined, totaled $58,030 in 2008 and $54,740 in 2007. (h) Disclose whether the registrant's audit committee of the board of trustees has considered whether the provision of non-audit services that were rendered to the registrant's investment adviser (not including any subadviser whose role is primarily portfolio management and is subcontracted with or overseen by another investment adviser), and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. The Fund's audit committee of the Board of Trustees has considered whether the provision of non-audit services that were rendered to the Affiliates (as defined) that were not pre- approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. Item 5. Audit Committee of Listed Registrants (a) If the registrant is a listed issuer as defined in Rule 10A-3 under the Exchange Act (17 CFR 240.10A-3), state whether or not the registrant has a separately-designated standing audit committee established in accordance with Section 3(a)(58)(A) of the Exchange Act (15 U.S.C. 78c(a)(58)(A)). If the registrant has such a committee, however designated, identify each committee member. If the entire board of directors is acting as the registrants audit committee as specified in Section 3(a)(58)(B) of the Exchange Act (15 U.S.C. 78c(a)(58)(B)), so state. N/A (b) If applicable, provide the disclosure required by Rule 10A-3(d) under the Exchange Act (17 CFR 240.10A-3(d)) regarding an exemption from the listing standards for audit committees. N/A Item 6. Schedule of Investments. File Schedule I Investments in securities of unaffiliated issuers as of the close of the reporting period as set forth in 210.12- 12 of Regulation S-X [17 CFR 210.12-12], unless the schedule is included as part of the report to shareholders filed under Item 1 of this Form. Included in Item 1 ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. A closed-end management investment company that is filing an annual report on this Form N-CSR must, unless it invests exclusively in non-voting securities, describe the policies and procedures that it uses to determine how to vote proxies relating to portfolio securities, including the procedures that the company uses when a vote presents a conflict between the interests of its shareholders, on the one hand, and those of the company's investment adviser; principal underwriter; or any affiliated person (as defined in Section 2(a)(3) of the Investment Company Act of 1940 (15 U.S.C. 80a-2(a)(3)) and the rules thereunder) of the company, its investment adviser, or its principal underwriter, on the other. Include any policies and procedures of the company's investment adviser, or any other third party, that the company uses, or that are used on the company's behalf, to determine how to vote proxies relating to portfolio securities. Not applicable to open-end management investment companies. Item 8. Portfolio Managers of Closed-End Management Investment Companies. (a) If the registrant is a closed-end management investment company that is filing an annual report on this Form N-CSR,provide the following information: (1) State the name, title, and length of service of the person or persons employed by or associated with the registrant or an investment adviser of the registrant who are primarily responsible for the day-to-day management of the registrants portfolio (Portfolio Manager). Also state each Portfolio Managers business experience during the past 5 years. Not applicable to open-end management investment companies. Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers. (a) If the registrant is a closed-end management investment company, in the following tabular format, provide the information specified in paragraph (b) of this Item with respect to any purchase made by or on behalf of the registrant or any affiliated purchaser, as defined in Rule 10b-18(a)(3) under the Exchange Act (17 CFR 240.10b-18(a)(3)), of shares or other units of any class of the registrants equity securities that is registered by the registrant pursuant to Section 12 of the Exchange Act (15 U.S.C. 781). Instruction to paragraph (a). Disclose all purchases covered by this Item, including purchases that do not satisfy the conditions of the safe harbor of Rule 10b-18 under the Exchange Act (17 CFR 240.10b-18), made in the period covered by the report. Provide disclosures covering repurchases made on a monthly basis. For example, if the reporting period began on January 16 and ended on July 15, the chart would show repurchases for the months from January 16 through February 15, February 16 through March 15, March 16 through April 15, April 16 through May 15, May 16 through June 15, and June 16 through July 15. Not applicable to open-end management investment companies. Item 10. Submission of Matters to a Vote of Security Holders. Describe any material changes to the procedures by which shareholders may recommend nominees to the registrants board of directors, where those changes were implemented after the registrant last provided disclosure in response to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14A (17 CFR 240.14a-101), or this Item. There have been no material changes to the procedures by which the shareholders may recommend nominees to the registrants board of directors since the registrant last provided disclosure in response to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14(A) in its definitive proxy statement, or this Item. ITEM 11. CONTROLS AND PROCEDURES. (a) Disclose the conclusions of the registrant's principal executive officer or officers and principal financial officer or officers, or persons performing similar functions, about the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-2(c) under the Act (17 CFR 270.30a-2(c))) based on their evaluation of these controls and procedures as of a date within 90 days of the filing date of the report that includes the disclosure required by this paragraph. The registrant's principal executive officer and principal financial officer have concluded that the registrant's disclosure controls and procedures 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) Disclose whether or not there were significant changes in the registrant's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. There were no significant changes in the registrant's internal control over financial reporting that occurred during the 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. The registrant's principal executive officer and principal financial officer, however, voluntarily are reporting the following information: In August of 2006 the registrant's investment adviser enhanced its internal procedures for reporting performance information required to be included in prospectuses. Those enhancements involved additional internal controls over the appropriateness of performance data generated for this purpose. Such enhancements were made following an internal review which identified prospectuses relating to certain classes of shares of a limited number of registrants where, inadvertently, performance information not reflecting the deduction of applicable sales charges was included. Those prospectuses were revised, and the revised prospectuses were distributed to shareholders. ITEM 12. EXHIBITS. File the exhibits listed below as part of this Form. Letter or number the exhibits in the sequence indicated. (a) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit. (b) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2 under the Act (17 CFR 270.30a-2). Filed herewith. SIGNATURES [See General Instruction F] 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) Pioneer Series Trust II By (Signature and Title)* /s/ John F. Cogan, Jr. John F. Cogan, Jr, President Date February 27, 2009 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 (Signature and Title)* /s/ John F. Cogan, Jr. John F. Cogan, Jr., President Date February 27, 2009 By (Signature and Title)* /s/ Mark Bradley Mark Bradley, Treasurer Date February 27, 2009 * Print the name and title of each signing officer under his or her signature.