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 811-2214 Columbia Funds Trust I - -------------------------------------------------------------------------------- (Exact name of registrant as specified in charter) One Financial Center, Boston, Massachusetts 02111 - -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip code) Vincent Pietropaolo, Esq. Columbia Management Group, Inc. One Financial Center Boston, MA 02111 - -------------------------------------------------------------------------------- (Name and address of agent for service) Registrant's telephone number, including area code: 1-617-772-3698 Date of fiscal year end: May 31, 2006 Date of reporting period: November 30, 2005 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. Section 3507. Item 1. Reports to Stockholders [PHOTO] COLUMBIA HIGH YIELD OPPORTUNITY FUND Semiannual Report November 30, 2005 PRESIDENT'S MESSAGE ---------------------------------- Columbia High Yield Opportunity Fund [PHOTO] Dear Shareholder: Columbia Management, the asset management division of Bank of America, is in the final stages of a significant business integration effort. Over the last year, we have integrated various components of Nations Funds, Galaxy Funds and Columbia Funds, resulting in a single fund family under the Columbia name that covers a wide range of markets, sectors and asset classes. Our team of talented, seasoned investment professionals will continue to strive to achieve strong results within their investment categories. Our objective is not only to provide our shareholders with the best products, but also to enhance the breadth and availability of our services. In addition to expanding the level of services available to the funds, portfolio managers and shareholders, we have been able to achieve significant cost savings for the funds by aggregating our business. In September, we made major inroads in the initiative to streamline our product offerings. This included merging several funds and renaming Nations Funds as Columbia Funds, as well as consolidating the Nations and Columbia web sites. Over the summer, we completed the service provider consolidation for shareholder servicing. As we work to complete the remaining product and service provider consolidations by the end of 2005, we remain committed to building a mutual fund business that helps you meet, and hopefully exceed, your personal financial goals. We value the confidence you have placed in us to assist you in managing your funds during these changing times. As with all businesses within Bank of America, we understand that your trust must be continually earned and will remain focused on producing results for you. We will continue to strive for the highest standards of performance and service excellence. All of these efforts have been undertaken to enable you, as a shareholder, to benefit from the execution of a consolidated business plan. We believe a more streamlined fund family with consistent performance and lower fees will provide the best opportunity for investment growth. We also believe that providing more robust services to you through multiple channels (Web, phones, voice response) will be beneficial to you. In the pages that follow, you'll find a discussion of the economic environment during the period followed by a detailed report from the fund manager on key factors that influenced performance. We encourage you to read the manager report carefully and discuss any questions you have with your financial advisor. As always, we thank you for choosing Columbia Management. We look forward to helping you keep your financial goals on target in the years to come. Sincerely, /s/ Christopher L. Wilson President, Columbia Funds Head of Mutual Funds, Columbia Management Christopher L. Wilson is Head of Mutual Funds for Columbia Management and responsible for the day-to-day delivery of mutual fund services to the firm's investors. Working closely with the legal and compliance teams, Chris oversees all aspects of the mutual fund services operation, including treasury, investment accounting and shareholder and broker services. As President and CEO of Columbia Funds (formerly Nations, Galaxy and Columbia Funds), Chris serves as the primary interface to the Fund Boards. Chris joined Bank of America in 2004. Table of Contents Performance Information.... 1 Fund Profile............... 2 Understanding Your Expenses 3 Economic Update............ 4 Portfolio Managers' Report. 5 Investment Portfolio....... 7 Statement of Assets and Liabilities. 31 Statement of Operations............. 32 Statement of Changes in Net Assets.. 33 Notes to Financial Statements....... 35 Financial Highlights................ 42 Board Consideration and Approval of Investment Advisory Agreements...... 46 Summary of Management Fee Evaluation by Independent Fee Consultant....... 49 Important Information About This Report................... 52 The views expressed in the President's Message and Portfolio Managers' Report reflect the current views of the respective parties. These views are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict so actual outcomes and results may differ significantly from the views expressed. These views are subject to change at any time based upon economic, market or other conditions and the respective parties disclaim any responsibility to update such views. These views may not be relied on as investment advice and, because investment decisions for a Columbia Fund are based on numerous factors, may not be relied on as an indication of trading intent on behalf of any particular Columbia Fund. References to specific company securities should not be construed as a recommendation or investment advice. -------------------------- Not FDIC May Lose Value Insured ----------------- No Bank Guarantee - ----------------- PERFORMANCE INFORMATION ---------------------------- Columbia High Yield Opportunity Fund PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE AND CURRENT PERFORMANCE MAY BE LOWER OR HIGHTER. PAST PERFORMANCE IS NO GUARANTEE OF FUTURE RESULTS. THE INVESTMENT RETURN AND PRINCIPAL VALUE WILL FLUCTUATE SO THAT SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THE ORIGINAL COST. PLEASE VISIT WWW.COLUMBIAFUNDS.COM FOR DAILY AND MOST RECENT MONTH-END PERFORMANCE UPDATES. Performance of a $10,000 investment 12/01/95 - 11/30/05 ($) sales charge without with --------------------------- Class A 16,695 15,902 --------------------------- Class B 15,487 15,487 --------------------------- Class C 15,686 15,686 --------------------------- Class Z 16,985 n/a Growth of a $10,000 investment 12/01/95 - 11/30/05 [CHART] Class A shares Class A shares CSFB High JP Morgan Global without sales with sales charge Yield Index High Yield Index -------------- ----------------- ----------- ---------------- $10,000 $ 9,525 $10,000 $10,000 12/31/1995 10,195 9,711 10,127 10,162 1/31/1996 10,376 9,884 10,319 10,355 2/29/1996 10,468 9,971 10,374 10,417 3/31/1996 10,376 9,883 10,346 10,383 4/30/1996 10,438 9,942 10,402 10,447 5/31/1996 10,516 10,017 10,486 10,527 6/30/1996 10,516 10,017 10,509 10,572 7/31/1996 10,579 10,077 10,604 10,643 8/31/1996 10,770 10,258 10,719 10,800 9/30/1996 11,058 10,533 10,904 11,056 10/31/1996 11,058 10,533 10,995 11,158 11/30/1996 11,270 10,734 11,167 11,363 12/31/1996 11,442 10,899 11,385 11,485 1/31/1997 11,542 10,993 11,468 11,576 2/28/1997 11,791 11,231 11,683 11,775 3/31/1997 11,556 11,007 11,553 11,583 4/30/1997 11,674 11,120 11,655 11,692 5/31/1997 11,964 11,395 11,890 11,962 6/30/1997 12,153 11,575 12,051 12,120 7/31/1997 12,445 11,854 12,307 12,442 8/31/1997 12,480 11,888 12,373 12,449 9/30/1997 12,777 12,170 12,618 12,697 10/31/1997 12,777 12,170 12,617 12,679 11/30/1997 12,883 12,271 12,707 12,793 12/31/1997 13,029 12,410 12,822 12,909 1/31/1998 13,299 12,667 13,040 13,109 2/28/1998 13,372 12,737 13,142 13,210 3/31/1998 13,536 12,893 13,208 13,343 4/30/1998 13,573 12,928 13,307 13,410 5/31/1998 13,592 12,946 13,347 13,429 6/30/1998 13,648 12,999 13,375 13,457 7/31/1998 13,813 13,157 13,468 13,570 8/31/1998 12,902 12,290 12,554 12,690 9/30/1998 12,792 12,184 12,553 12,678 10/31/1998 12,569 11,972 12,303 12,405 11/30/1998 13,395 12,758 12,926 13,089 12/31/1998 13,310 12,678 12,897 13,035 1/31/1999 13,531 12,889 13,018 13,191 2/28/1999 13,548 12,904 12,991 13,124 3/31/1999 13,816 13,160 13,109 13,286 4/30/1999 14,056 13,388 13,399 13,623 5/31/1999 13,793 13,138 13,254 11,225 6/30/1999 13,873 13,214 13,260 13,429 7/31/1999 13,916 13,255 13,267 13,433 8/31/1999 13,854 13,196 13,149 13,299 9/30/1999 13,789 13,134 13,048 13,203 10/31/1999 13,812 13,156 12,984 13,130 11/30/1999 14,044 13,377 13,160 13,344 12/31/1999 14,133 13,461 13,320 13,475 1/31/2000 13,976 13,312 13,266 13,424 2/29/2000 14,188 13,514 13,349 13,478 3/31/2000 13,972 13,309 13,148 13,248 4/30/2000 13,882 13,222 13,129 13,246 5/31/2000 13,616 12,970 12,919 13,058 6/30/2000 13,727 13,075 13,208 13,315 7/31/2000 13,865 13,207 13,332 13,432 8/31/2000 14,003 13,338 13,421 13,536 9/30/2000 13,769 13,115 13,298 13,358 10/31/2000 13,167 12,542 12,884 12,967 11/30/2000 12,411 11,822 12,377 12,472 12/31/2000 12,676 12,074 12,626 12,691 1/31/2001 13,676 13,026 13,383 13,460 2/28/2001 13,715 13,064 13,518 13,616 3/31/2001 13,187 12,561 13,249 13,349 4/30/2001 12,879 12,267 13,111 13,209 5/31/2001 12,997 12,380 13,374 13,468 6/30/2001 12,436 11,845 13,166 13,235 7/31/2001 12,426 11,836 13,307 13,369 8/31/2001 12,518 11,923 13,494 13,543 9/30/2001 11,514 10,967 12,643 12,649 10/31/2001 11,930 11,363 12,932 12,964 11/30/2001 12,350 11,763 13,349 13,404 12/31/2001 12,324 11,738 13,357 13,387 1/31/2002 12,452 11,860 13,482 13,485 2/28/2002 12,231 11,650 13,386 13,384 3/31/2002 12,443 11,852 13,693 13,686 4/30/2002 12,547 11,951 13,910 13,894 5/31/2002 12,377 11,789 13,862 13,847 6/30/2002 11,759 11,201 13,379 13,348 7/31/2002 11,433 10,890 12,997 12,977 8/31/2002 11,473 10,929 13,165 13,097 9/30/2002 11,370 10,830 13,004 12,943 10/31/2002 11,252 10,718 12,924 12,850 11/30/2002 11,713 11,157 13,608 13,516 12/31/2002 11,798 11,237 13,774 13,673 1/31/2003 12,030 11,459 14,149 14,028 2/28/2003 12,176 11,597 14,358 14,233 3/31/2003 12,412 11,822 14,726 14,576 4/30/2003 13,040 12,420 15,478 15,299 5/31/2003 13,097 12,475 15,702 15,512 6/30/2003 13,460 12,821 16,161 15,965 7/31/2003 13,364 12,730 16,030 15,864 8/31/2003 13,485 12,844 16,210 16,021 9/30/2003 13,885 13,226 16,652 16,465 10/31/2003 14,163 13,490 16,992 16,771 11/30/2003 14,462 13,775 17,225 17,006 12/31/2003 14,826 14,122 17,622 17,436 1/31/2004 15,096 14,379 17,964 17,755 2/29/2004 15,016 14,303 17,973 17,769 3/31/2004 15,033 14,319 18,094 17,908 4/30/2004 15,049 14,334 18,068 17,842 5/31/2004 14,838 14,134 17,783 17,565 6/30/2004 15,064 14,348 18,059 17,832 7/31/2004 15,225 14,502 18,290 18,057 8/31/2004 15,461 14,727 18,588 18,360 9/30/2004 15,766 15,017 18,870 18,625 10/31/2004 16,042 15,280 19,195 18,938 11/30/2004 16,359 15,582 19,439 19,150 12/31/2004 16,577 15,789 19,730 19,448 1/31/2005 16,549 15,763 19,726 19,446 2/28/2005 16,790 15,993 19,987 19,711 3/31/2005 16,298 15,524 19,509 19,222 4/30/2005 16,055 15,293 19,316 19,055 5/31/2005 16,165 15,397 19,554 19,335 6/30/2005 16,493 15,709 19,880 19,664 7/31/2005 16,816 16,017 20,152 19,925 8/31/2005 16,892 16,089 20,257 20,047 9/30/2005 16,711 15,917 20,061 19,876 10/31/2005 16,539 15,753 19,872 19,723 11/30/2005 16,695 15,902 20,007 19,854 The chart above shows the growth in value of a hypothetical $10,000 investment in Class A shares of Columbia High Yield Opportunity Fund during the stated time period. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The Credit Suisse First Boston (CSFB) High Yield Index is a broad-based, unmanaged index that tracks the performance of high-yield bonds. The JP Morgan Global High Yield Index is designed to mirror the investable universe of the US dollar global high-yield corporate debt market, including domestic and international issues. Unlike the fund, indices are not investments, do not incur fees or expenses and are not professionally managed. It is not possible to invest directly in an index. Securities in the fund may not match those in an index. Average annual total return as of 11/30/05 (%) Share class A B C Z ---------------------------------------------------------------------- Inception 10/21/71 06/08/92 01/15/96 01/08/99 ---------------------------------------------------------------------- Sales charge without with without with without with without ---------------------------------------------------------------------- 6-month (cumulative) 3.32 -1.59 2.94 -2.02 3.01 2.02 3.45 ---------------------------------------------------------------------- 1-year 2.09 -2.76 1.33 -3.37 1.48 0.54 2.34 ---------------------------------------------------------------------- 5-year 6.11 5.08 5.33 5.05 5.49 5.49 6.37 ---------------------------------------------------------------------- 10-year 5.26 4.75 4.47 4.47 4.60 4.60 5.44 ---------------------------------------------------------------------- Average annual total return as of 09/30/05 (%) Share class A B C Z --------------------------------------------------------------------- Sales charge without with without with without with without --------------------------------------------------------------------- 6-month (cumulative) 2.53 -2.34 2.15 -2.77 2.23 1.24 2.66 --------------------------------------------------------------------- 1-year 5.99 0.96 5.20 0.32 5.36 4.38 6.26 --------------------------------------------------------------------- 5-year 3.95 2.94 3.18 2.90 3.34 3.34 4.20 --------------------------------------------------------------------- 10-year 5.46 4.95 4.67 4.67 4.80 4.80 5.63 --------------------------------------------------------------------- THE "WITH SALES CHARGE" RETURNS INCLUDE THE MAXIMUM INITIAL SALES CHARGE OF 4.75% FOR CLASS A SHARES, MAXIMUM CONTINGENT DEFERRED SALES CHARGE OF 5.00% FOR CLASS B SHARES AND 1.00% FOR CLASS C SHARES FOR THE FIRST YEAR ONLY. THE "WITHOUT SALES CHARGE" RETURNS DO NOT INCLUDE THE EFFECT OF SALES CHARGES. IF THEY HAD, RETURNS WOULD BE LOWER. PERFORMANCE RESULTS REFLECT ANY VOLUNTARY WAIVERS OR REIMBURSEMENT OF FUND EXPENSES BY THE ADVISOR OR ITS AFFILIATES. ABSENT THESE WAIVERS OR REIMBURSEMENT ARRANGEMENTS, PERFORMANCE RESULTS WOULD HAVE BEEN LOWER. All results shown assume reinvestment of distributions. Class Z shares are sold at net asset value with no 12b-1 fees. Class Z shares have limited eligibility and the investment minimum requirement may vary. Please see the fund's prospectus for details. Performance for different share classes will vary based on differences in sales charges and fees associated with each class. Class C is a newer class of shares. Its performance information includes returns of the fund's class B shares for periods prior to the inception of class C shares. Class B shares would have substantially similar annual returns because class B and class C shares generally have similar expense structures. Class A shares were initially offered on October 21, 1971, class B shares were initially offered on June 8, 1992, and class C shares were initially offered on January 15, 1996. Class Z is a newer class of shares. Its performance information includes returns of the fund's class A shares (the oldest existing fund class) for periods prior to its inception. The returns have not been restated to reflect any differences in expenses (such as Rule 12b-1 fees) between class A shares and the newer class of shares. If differences in expenses had been reflected, the returns shown for periods prior to the inception of the newer class of shares would have been higher. Class Z shares were initially offered on January 8, 1999. 1 FUND PROFILE ------------------------------------ Columbia High Yield Opportunity Fund The information below gives you a snapshot of your fund at the end of the reporting period. Your fund is actively managed and the composition of its portfolio will change over time. Top 10 issuers as of 11/30/05 (%) Spanish Broadcasting System, Inc. 1.2 --------------------------------------- Qwest Corp. 1.2 --------------------------------------- Eldorado Casino Shreveport/ Shreveport Capital Corp. 1.1 --------------------------------------- General Motors Acceptance Corp. 1.0 --------------------------------------- Sonat, Inc. 1.0 --------------------------------------- Allied Waste North America, Inc. 0.9 --------------------------------------- Williams Companies, Inc. 0.9 --------------------------------------- Dex Media West LLC 0.8 --------------------------------------- CSC Holdings, Inc. 0.8 --------------------------------------- Charter Communications Holdings LLC 0.8 --------------------------------------- Maturity Breakdown as of 11/30/05 (%) 0 - 3 years 3.8 ------------------ 3 - 5 years 12.3 ------------------ 5 - 7 years 33.3 ------------------ 7 - 10 years 40.3 ------------------ 10 - 15 years 1.1 ------------------ 15 - 20 years 1.6 ------------------ 20 - 30 years 2.9 ------------------ Other 4.7 ------------------ Quality breakdown as of 11/30/05 (%) BBB 0.2 --------------------- BB 19.8 --------------------- B 49.7 --------------------- CCC 19.8 --------------------- CC 1.4 --------------------- Non-rated 3.6 --------------------- Cash equivalents 5.5 --------------------- Portfolio structure as of 11/30/05 (%) Corporate fixed-income bonds & notes 84.7 -------------------------------- Preferred stocks 2.2 -------------------------------- Common stocks and warrants 1.5 -------------------------------- Convertible bonds 1.3 -------------------------------- Municipal bond (taxable) 0.7 -------------------------------- Cash equivalents, net other assets & liabilities 9.6 -------------------------------- Maturity and quality breakdowns are calculated as a percentage of investments. Ratings shown in the quality breakdowns represent the rating assigned to a particular bond by one of the following nationally recognized rating agencies: Standard & Poor's, a division of The McGraw-Hill Companies, Inc., Moody's Investors Service, Inc. or Fitch Ratings Ltd. Ratings are relative and subjective and are not absolute standards of quality. The fund's credit quality does not remove market risk. Portfolio structure and top 10 issuers are calculated as a percentage of net assets. Management Style is determined by Columbia Management, and is based on the investment strategy and process as outlined in the fund's prospectus. PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE AND CURRENT PERFORMANCE MAY BE LOWER OR HIGHER. PAST PERFORMANCE IS NO GUARANTEE OF FUTURE RESULTS. THE INVESTMENT RETURN AND PRINCIPAL VALUE WILL FLUCTUATE SO THAT SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THE ORIGINAL COST. PLEASE VISIT WWW.COLUMBIAFUNDS.COM FOR DAILY AND MOST RECENT MONTH-END PERFORMANCE UPDATES. Summary .. For the six-month period ended November 30, 2005, the fund's class A shares returned 3.32% without sales charge. .. The fund outperformed both its peer group and its benchmark indexes. .. The fund's investments in the wireless telecom, energy and utility industries all contributed positively to overall performance. [GRAPHIC] CSFB Class A shares High Yield Index -------------- ---------------- 3.32% 2.32% The Credit Suisse First Boston (CSFB) High Yield Index is a broad-based, unmanaged index that tracks the performance of high-yield bonds. It is unmanaged and unavailable for investment. The JP Morgan Global High Yield Index is designed to mirror the investable universe of the US dollar global high-yield corporate debt market, including domestic and international issues. It is unmanaged and unavailable for investment. Objective Seeks high current income and total return Total Net Assets $478.1 million Management Style [GRAPHIC] 2 UNDERSTANDING YOUR EXPENSES -------------------------- Columbia High Yield Opportunity Fund Estimating your actual expenses To estimate the expenses that you paid over the period, first you will need your account balance at the end of the period: .. For shareholders who receive their account statements from Columbia Management Services, Inc., your account balance is available online at www.columbiafunds.com or by calling Shareholder Services at 800.345.6611 .. For shareholders who receive their account statements from their brokerage firm, contact your brokerage firm to obtain your account balance 1.Divide your ending account balance by $1,000. For example, if an account balance was $8,600 at the end of the period, the result would be 8.6 2.In the section of the table below titled "Expenses paid during the period," locate the amount for your share class. You will find this number is in the column labeled "actual." Multiply this number by the result from step 1. Your answer is an estimate of the expenses you paid on your account during the period As a fund shareholder, you incur two types of costs. There are transaction costs, which generally include sales charges on purchases and may include redemption or exchange fees. There are also ongoing costs, which generally include investment advisory fees, Rule 12b-1 fees and other fund expenses. The information on this page is intended to help you understand your ongoing costs of investing in the fund and to compare this cost with the continuing costs of investing in other mutual funds. Analyzing your fund's expenses by share class To illustrate these ongoing costs, we have provided an example and calculated the expenses paid by investors in each share class during the reporting period. The information in the following table is based on an initial investment of $1,000, which is invested at the beginning of the reporting period and held for the entire period. Expense information is calculated two ways and each method provides you with different information. The amount listed in the "actual" column is calculated using the fund's actual operating expenses and total return for the period. The amount listed in the "hypothetical" column for each share class assumes that the return each year is 5% before expenses and includes the fund's actual expense ratio. You should not use the hypothetical account values and expenses to estimate either your actual account balance at the end of the period or the expenses you paid during this reporting period. 06/01/05 - 11/30/05 Account value at the Account value at the Expenses paid Fund's annualized beginning of the period ($) end of the period ($) during the period ($) expense ratio (%) - ------------------------------------------------------------------------------------------------- Actual Hypothetical Actual Hypothetical Actual Hypothetical - ------------------------------------------------------------------------------------------------- Class A 1,000.00 1,000.00 1,033.24 1,019.30 5.86 5.82 1.15 - ------------------------------------------------------------------------------------------------- Class B 1,000.00 1,000.00 1,029.33 1,015.54 9.67 9.60 1.90 - ------------------------------------------------------------------------------------------------- Class C 1,000.00 1,000.00 1,030.13 1,016.29 8.91 8.85 1.75 - ------------------------------------------------------------------------------------------------- Class Z 1,000.00 1,000.00 1,034.49 1,020.56 4.59 4.56 0.90 - ------------------------------------------------------------------------------------------------- Expenses paid during the period are equal to the fund's respective class annualized expense ratio, multiplied by the average account value over the period, then multiplied by the number of days in the fund's most recent fiscal half-year and divided by 365. Had the distributor and transfer agent not waived a portion of expenses, total return would have been reduced. It is important to note that the expense amounts shown in the table are meant to highlight only continuing costs of investing in the fund and do not reflect any transactional costs, such as sales charges or redemption or exchange fees. Therefore, the hypothetical examples provided will not help you determine the relative total costs of owning different funds. If these transactional costs were included, your costs would have been higher. Compare with other funds Since all mutual funds are required to include the same hypothetical calculations about expenses in shareholder reports, you can use this information to compare the ongoing cost of investing in the fund with other funds. To do so, compare the 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of other funds. As you compare hypothetical examples of other fund companies, it is important to note that hypothetical examples are meant to highlight the continuing cost of investing in a fund and do not reflect any transactional costs, such as sales charges or redemption or exchange fees. 3 ECONOMIC UPDATE -------------------------------- Columbia High Yield Opportunity Fund The US economy moved ahead at a healthy pace during the six-month period that began June 1, 2005 and ended November 30, 2005. Gross domestic product expanded at an annualized rate of 3.8% as job growth helped buoy consumer spending and rising profits helped business spending. Employment data was solid, even in light of Hurricanes Katrina and Rita, which disrupted the labor market near the end of the summer. During the six-month period, the economy added an average of 146,000 new jobs each month, even with a weak September, when only 17,000 net new jobs were added. In fact, September's job figures, though low compared to other months, came as good news after original estimates had been for net job losses of as high as 35,000. Energy prices hit a record price of approximately $70 per barrel mid way through the period and sent consumer confidence into a tailspin that continued in the wake of the twin storms. Yet the economy picked up strength as the period wore on -- and so did consumer confidence, which moved sharply higher in November as the price of oil retreated and the job market stabilized. The latest data on the economy suggest that it has retained considerable momentum. A mini-wave of home refinancing activity put additional cash into consumer pockets early in the summer. Manufacturing activity remained strong, and business activity in non-manufacturing industries continued to expand. Bonds slumped as interest rates moved higher The US bond market came to a standstill as intermediate and long-term interest rates moved higher near the end of the six-month reporting period. The yield on the 10-year US Treasury note, a bellwether for the bond market, ended the period at 4.50%, 50 basis points higher than where it started the period. (A basis point is one hundredth of a percent.) In this environment, the Lehman Brothers Aggregate Bond Index returned negative 0.48% for the six-month period. High-yield bonds led the fixed income markets despite a setback as investors appeared to grow more cautious about risk near the end of the period. The Merrill Lynch US High Yield, Cash Pay Index returned 2.57%. The Fed's short-term rate hikes continued The Federal Reserve Board (the Fed) raised the federal funds rate, a key short-term rate, from 3.0% to 4.0% in four consecutive one-quarter point increases./1/ In the wake of Hurricanes Katrina and Rita, some market observers speculated that the Fed might curtail its rate hikes. However, outgoing Fed chairman Greenspan indicated that inflation was a greater concern than the sustainability of economic growth, and we believe that the Fed is likely to continue to raise short-term interest rates into the first half of 2006. Despite volatility, stocks moved ahead The S&P 500 Index -- a broad measure of large company stock market performance - -- returned 5.88% for this reporting period. However, there was a wide gap among the various style and market capitalization segments of the market. Large-cap value stocks returned a modest 5.70%, as measured by the Russell 1000 Value Index/2/. Small-cap growth stocks led other sectors, as measured by the Russell 2000 Growth Index, which gained 11.68%. /1/The federal funds rate was increased to 4.25% on December 13, 2005. /2/The Russell 1000 Value Index is an unmanaged index that measures the performance of those Russell 1000 Index companies with lower price-to-book ratios and lower forecasted growth values. Summary For the six-month period ended November 30, 2005 .. Investment-grade bonds slumped, as measured by the Lehman Brothers Aggregate Bond Index. High-yield bonds led the fixed income markets, as measured by the Merrill Lynch US High Yield, Cash Pay Index. [GRAPHIC] Lehman Index Merill Lynch Index - ------------ ------------------ -0.48% 2.57% .. Despite volatility, the broad stock market, as measured by the S&P 500 Index, returned 5.88%. Small-cap growth stocks were the period's best performers, as measured by the Russell 2000 Growth Index. [GRAPHIC] S&P Index Russell Index - --------- ------------- 5.88% 11.68% The Lehman Brothers Aggregate Bond Index is a market value-weighted index that tracks the performance of fixed-rate, publicly placed, dollar-denominated, and non-convertible investment grade debt issues. The Merrill Lynch US High Yield, Cash Pay Index is an unmanaged index that tracks the performance of non-investment-grade corporate bonds. The S&P 500 Index is an unmanaged index that tracks the performance of 500 widely held, large-capitalization US stocks. The Russell 2000 Growth Index is an unmanaged index that measures the performance of those Russell 2000 Index companies with higher price-to-book ratios and higher forecasted growth values. 4 PORTFOLIO MANAGERS' REPORT ---------------------------------- Columbia High Yield Opportunity Fund For the six-month period ended November 30, 2005, class A shares of Columbia High Yield Opportunity Fund returned 3.32% without sales charge. The fund outperformed its benchmarks, the CSFB High Yield Index and the JP Morgan Global High Yield Index, which returned 2.32% and 2.72%, respectively. It also outperformed its peer group, the Lipper High Current Yield Funds Category, which averaged a return of 2.90% for the same period./1/ Even though the fund gave up some performance because of its heavy weight in lower-rated securities, it made up ground -- and then some -- with favorable industry allocation. The biggest winners for the fund included the wireless telecom sector, energy and utility companies. Wireless holdings were pushed higher by the combined effects of strong growth and industry consolidation. Fund holdings such as Nextel Partners, Inc., Western Wireless Corp., US Unwired, Inc. and Alamosa Holdings, Inc. all benefited from acquisitions by investment grade companies. Western Wireless Corp. was sold before the end of the period. Energy and utility companies posted unusually robust operating results, boosted by sustained high prices for oil and gas. As a result, the fund added to its positions in Chesapeake Energy Corp. and the Williams Companies, Inc. By comparison, paper and packaging industry bonds lagged during the period, as bottom line profits fell because companies were unable to pass on higher costs. In particular, the competitive position of Canadian paper company Tembec Industries, Inc. was hurt by lumber tariffs and the strength in the Canadian dollar. Intensifying competition hurt the cable television industry, which affected the fund's position in Charter Communications Holdings LLC, a holding that we reduced on fairly advantageous terms following the announcement of a debt exchange offer. Individual detractors from performance included Merisant Worldwide, Inc., the manufacturer of Equal, which has faced increasing competition from Johnson and Johnson's Splenda, and auto parts supplier Delco Remy International, Inc., which was hurt by ongoing pressure on domestic automobile manufacturers and sold from the portfolio. Although the fund's lack of exposure to the automotive sector at the beginning of the period aided results, we established positions in Ford /1/Lipper Inc., a widely respected data provider in the industry, calculates an average total return (assuming reinvestment of distributions) for mutual funds with investment objectives similar to those of the fund. Lipper makes no adjustment for the effect of sales loads. PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE AND CURRENT PERFORMANCE MAY BE LOWER OR HIGHER. PAST PERFORMANCE IS NO GUARANTEE OF FUTURE RESULTS. THE INVESTMENT RETURN AND PRINCIPAL VALUE WILL FLUCTUATE SO THAT SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THE ORIGINAL COST. PLEASE VISIT WWW.COLUMBIAFUNDS.COM FOR DAILY AND MOST RECENT MONTH-END PERFORMANCE UPDATES. Net asset value per share as of 11/30/05 ($) Class A 4.52 ------------ Class B 4.52 ------------ Class C 4.52 ------------ Class Z 4.52 Distributions declared per share 06/01/05 - 11/30/05 ($) Class A 0.19 ------------ Class B 0.17 ------------ Class C 0.18 ------------ Class Z 0.20 SEC yields as of 11/30/05 (%) Class A 6.61 ------------ Class B 6.19 ------------ Class C 6.34 ------------ Class Z 7.20 The 30-day SEC yields reflect the portfolio's earning power net of expenses, expressed as an annualized percentage of the public offering price per share at the end of the period. Holdings discussed in this report as of 11/30/05 (%) Ford Motor Credit Co. 0.3 --------------------------------------- General Motors Corp. 0.2 --------------------------------------- Nextel Partners, Inc. 0.2 --------------------------------------- US Unwired, Inc. 0.4 --------------------------------------- Alamosa Holdings, Inc. 0.2 --------------------------------------- Chesapeake Energy Corp. 0.5 --------------------------------------- Williams Companies, Inc. 0.9 --------------------------------------- Tembec Industries, Inc. 0.2 --------------------------------------- Charter Communications Holdings LLC 0.8 --------------------------------------- Merisant Worldwide, Inc. 0.1 Your fund is actively managed and the composition of its portfolio will change over time. Information provided is calculated as a percentage of net assets. 5 --------------------------------------- Columbia High Yield Opportunity Fund and GM soon after the companies lost their investment-grade status. We believe automotive companies face significant operational challenges in the years ahead, but Ford and GM bonds enjoy some credit protection in the form of profitable finance subsidiaries, which, in theory, can be spun off from their respective parent companies. High-yield investors became more risk averse during the period, the result of bankruptcies at Delphi Corp. and Collins & Aikman as well as the historic credit downgrades at Ford Motor Credit Co. and General Motors Corp. We responded to this trend towards higher-quality securities by reducing our exposure to CCC- and-lower rates securities, from 39.5% to 24.8% of total assets. Looking ahead Our outlook for the high-yield market remains cautiously optimistic. We expect solid economic growth and modest inflation in 2006. Even more important, we expect the Federal Reserve to cease its series of short-term interest rate hikes sometime in the first half of 2006. We expect default rates to rise somewhat, but also expect them to remain well below their historical averages. This overall macroeconomic environment has the potential to be favorable for the high-yield sector. Nevertheless, we plan to take a neutral stance toward the market because of our belief that prevailing prices already reflect these positive business prospects. [PHOTO] Thomas A. LaPointe Thomas A. LaPointe, CFA, has co-managed Columbia High Yield Opportunity Fund since February 2003 and has been with the advisor or its predecessors or affiliate organizations since February 1999. /s/ [PHOTO] Kevin L. Cronk Kevin L. Cronk, CFA, has co-managed the fund since February 2003 and has been with the advisor or its predecessors or affiliate organizations since August 1999. /s/ Investing in fixed-income securities may involve certain risks, including the credit quality of individual issuers, possible prepayments, market or economic developments and yield and share price fluctuations due to changes in interest rates. When interest rates go up, bond prices typically drop, and vice versa. Investing in high-yield or "junk" bonds offers the potential for higher income than investments in investment-grade bonds, but also has a higher degree of risk. Changes in economic conditions or other circumstances may adversely affect a high-yield bond issuer's ability to make timely principal and interest payments. Rising interest rates tend to lower the value of all bonds. International investing involves special risks, including foreign taxation, currency fluctuations, risks associated with possible differences in financial standards and other monetary and political risks. Our outlook for the high-yield market remains cautiously optimistic. 6 INVESTMENT PORTFOLIO ------------------------------------ November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - 84.7% BASIC MATERIALS - 8.0% Chemicals - 4.2% Par ($) Value ($) - ----------------------------------- ----------------------- ------------ ---------- Agricultural Chemicals - 1.3% ----------------------- ------------ ---------- IMC Global, Inc. 10.875% 08/01/13 1,050,000 1,220,625 ----------------------- ------------ ---------- Terra Capital, Inc. 12.875% 10/15/08 1,920,000 2,236,800 ----------------------- ------------ ---------- UAP Holding Corp. (a) 07/15/12 (10.750% 01/15/08) 1,190,000 1,023,400 ----------------------- ------------ ---------- United Agri Products 8.250% 12/15/11 1,618,000 1,690,810 ----------------------- ------------ ---------- 6,171,635 Chemicals - Diversified - 2.5% ----------------------- ------------ ---------- BCP Crystal US Holdings Corp. 9.625% 06/15/14 917,000 1,017,870 ----------------------- ------------ ---------- EquiStar Chemicals LP 10.625% 05/01/11 505,000 559,288 ----------------------- ------------ ---------- Huntsman International LLC 7.375% 01/01/15 1,415,000 1,365,475 ----------------------- ------------ ---------- Huntsman LLC 11.500% 07/15/12 1,570,000 1,774,100 ----------------------- ------------ ---------- Innophos Investments Holdings, Inc. PIK, 12.340% 02/15/15 (b)(c) 1,101,693 1,037,812 ----------------------- ------------ ---------- Lyondell Chemical Co. 9.625% 05/01/07 1,610,000 1,690,500 ----------------------- ------------ ---------- Nell AF SARL 8.375% 08/15/15 (b) 870,000 852,600 8.375% 08/15/15 (b) EUR 735,000 866,565 ----------------------- ------------ ---------- NOVA Chemicals Corp. 6.500% 01/15/12 1,620,000 1,583,550 7.561% 11/15/13 (b)(c) 1,010,000 1,030,200 ----------------------- ------------ ---------- 11,777,960 Chemicals - Specialty - 0.4% ----------------------- ------------ ---------- Rhodia SA 8.875% 06/01/11 2,020,000 2,050,300 ----------------------- ------------ ---------- 2,050,300 ---------- Chemicals Total 19,999,895 Forest Products & Paper - 3.1% Forestry - 0.3% ----------------------- ------------ ---------- Millar Western Forest Products Ltd. 7.750% 11/15/13 700,000 539,000 ----------------------- ------------ ---------- Tembec Industries, Inc. 8.500% 02/01/11 1,605,000 971,025 ----------------------- ------------ ---------- 1,510,025 Paper & Related Products - 2.8% ----------------------- ------------ ---------- Abitibi-Consolidated, Inc. 8.375% 04/01/15 1,325,000 1,285,250 ----------------------- ------------ ---------- Boise Cascade LLC 7.025% 10/15/12 (c) 1,370,000 1,342,600 7.125% 10/15/14 1,250,000 1,150,000 See Accompanying Notes to Financial Statements. 7 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) BASIC MATERIALS - (continued) Forest Products & Paper - (continued) Par ($) Value ($) -------------------------------------- ------------------ ---------- ---------- Paper & Related Products - (continued) ------------------ ---------- ---------- Buckeye Technologies, Inc. 8.500% 10/01/13 480,000 480,000 ------------------ ---------- ---------- Caraustar Industries, Inc. 9.875% 04/01/11 1,075,000 1,077,688 ------------------ ---------- ---------- Georgia-Pacific Corp. 8.000% 01/15/24 3,225,000 3,120,187 ------------------ ---------- ---------- Neenah Paper, Inc. 7.375% 11/15/14 790,000 703,100 ------------------ ---------- ---------- Newark Group, Inc. 9.750% 03/15/14 1,855,000 1,632,400 ------------------ ---------- ---------- NewPage Corp. 10.000% 05/01/12 1,070,000 1,045,925 ------------------ ---------- ---------- Norske Skog 7.375% 03/01/14 995,000 902,963 8.625% 06/15/11 450,000 439,875 ------------------ ---------- ---------- 13,179,988 ---------- Forest Products & Paper Total 14,690,013 Iron/Steel - 0.6% Steel - Producers - 0.2% ------------------ ---------- ---------- Steel Dynamics, Inc. 9.500% 03/15/09 1,080,000 1,138,050 ------------------ ---------- ---------- 1,138,050 Steel - Specialty - 0.4% ------------------ ---------- ---------- UCAR Finance, Inc. 10.250% 02/15/12 1,771,000 1,872,833 ------------------ ---------- ---------- 1,872,833 ---------- Iron/Steel Total 3,010,883 Metals & Mining - 0.1% Mining Services - 0.1% ------------------ ---------- ---------- Hudson Bay Mining & Smelting Co., Ltd. 9.625% 01/15/12 560,000 595,000 ------------------ ---------- ---------- 595,000 ---------- Metals & Mining Total 595,000 ---------- BASIC MATERIALS TOTAL 38,295,791 COMMUNICATIONS - 18.1% Media - 7.4% Broadcast Services/Programs - 0.2% ------------------ ---------- ---------- Fisher Communications, Inc. 8.625% 09/15/14 860,000 907,300 ------------------ ---------- ---------- 907,300 Cable TV - 3.1% ------------------ ---------- ---------- Atlantic Broadband Finance LLC 9.375% 01/15/14 1,855,000 1,674,137 See Accompanying Notes to Financial Statements. 8 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) COMMUNICATIONS - (continued) Media - (continued) Par ($) Value ($) - -------------------------------------- ----------------------- --------- ---------- Cable TV - (continued) ----------------------- --------- ---------- Charter Communications Holdings II LLC 10.250% 09/15/10 1,000,000 1,000,000 ----------------------- --------- ---------- Charter Communications Holdings LLC 9.920% 04/01/14 (b) 5,775,000 3,609,375 ----------------------- --------- ---------- CSC Holdings, Inc. 7.000% 04/15/12 (b) 625,000 595,313 7.625% 04/01/11 3,320,000 3,311,700 ----------------------- --------- ---------- EchoStar DBS Corp. 6.625% 10/01/14 1,950,000 1,881,750 ----------------------- --------- ---------- Insight Midwest LP 9.750% 10/01/09 1,255,000 1,295,788 ----------------------- --------- ---------- Pegasus Satellite Communications, Inc. 11.250% 01/15/10 (b)(d) 2,325,000 232,500 ----------------------- --------- ---------- Telenet Group Holding NV (a) 06/15/14 (11.500% 12/15/08) (b) 1,662,000 1,327,522 ----------------------- --------- ---------- 14,928,085 Multimedia - 0.7% ----------------------- --------- ---------- Advanstar Communications, Inc. 15.000% 10/15/11 1,325,000 1,387,938 ----------------------- --------- ---------- Haights Cross Operating Co. 11.750% 08/15/11 665,000 721,525 ----------------------- --------- ---------- Lamar Media Corp. 6.625% 08/15/15 (b) 1,445,000 1,452,225 ----------------------- --------- ---------- 3,561,688 Publishing - Newspapers - 0.5% ----------------------- --------- ---------- Hollinger, Inc. 11.875% 03/01/11 (b) 1,009,000 1,009,000 12.875% 03/01/11 (b) 1,474,000 1,555,070 ----------------------- --------- ---------- 2,564,070 Publishing - Periodicals - 1.8% ----------------------- --------- ---------- Dex Media, Inc. (a) 11/15/13 (9.000% 11/15/08) 1,230,000 971,700 ----------------------- --------- ---------- Dex Media West LLC 9.875% 08/15/13 3,607,000 4,017,296 ----------------------- --------- ---------- PriMedia, Inc. 8.875% 05/15/11 2,320,000 2,233,000 ----------------------- --------- ---------- WDAC Subsidiary Corp. 8.375% 12/01/14 (b) 1,385,000 1,329,600 ----------------------- --------- ---------- 8,551,596 Television - 1.1% ----------------------- --------- ---------- LIN Television Corp. 6.500% 05/15/13 (b) 450,000 433,125 ----------------------- --------- ---------- Paxson Communications Corp. (a) 01/15/09 (12.250% 01/15/06) 1,955,000 2,016,094 10.750% 07/15/08 495,000 508,612 ----------------------- --------- ---------- Sinclair Broadcast Group, Inc. 8.750% 12/15/11 2,080,000 2,199,600 ----------------------- --------- ---------- 5,157,431 ---------- Media Total 35,670,170 See Accompanying Notes to Financial Statements. 9 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) COMMUNICATIONS - (continued) Telecommunication Services - 10.7% Par ($) Value ($) - ----------------------------------- ----------------------- --------- ---------- Cellular Telecommunications - 3.5% ----------------------- --------- ---------- American Cellular Corp. 10.000% 08/01/11 1,805,000 1,958,425 ----------------------- --------- ---------- Digicel Ltd. 9.250% 09/01/12 (b) 1,655,000 1,704,650 ----------------------- --------- ---------- Dobson Cellular Systems, Inc. 8.375% 11/01/11 1,605,000 1,701,300 ----------------------- --------- ---------- Horizon PCS, Inc. 11.375% 07/15/12 325,000 374,563 ----------------------- --------- ---------- iPCS Escrow Co. 11.500% 05/01/12 790,000 910,475 ----------------------- --------- ---------- Nextel Partners, Inc. 8.125% 07/01/11 1,070,000 1,147,575 ----------------------- --------- ---------- Rogers Cantel, Inc. 9.750% 06/01/16 2,080,000 2,485,600 ----------------------- --------- ---------- Rogers Wireless, Inc. 8.000% 12/15/12 1,295,000 1,372,700 ----------------------- --------- ---------- Rural Cellular Corp. 8.250% 03/15/12 1,355,000 1,419,362 9.750% 01/15/10 375,000 375,938 10.041% 11/01/12 (b)(c) 1,315,000 1,308,425 ----------------------- --------- ---------- US Unwired, Inc. 10.000% 06/15/12 1,845,000 2,098,687 ----------------------- --------- ---------- 16,857,700 Satellite Telecommunications - 1.4% ----------------------- --------- ---------- Inmarsat Finance II PLC (a) 11/15/12 (10.375% 11/15/08) 2,285,000 1,859,419 ----------------------- --------- ---------- Intelsat Bermuda Ltd. 8.250% 01/15/13 (b) 2,685,000 2,678,287 ----------------------- --------- ---------- PanAmSat Corp. 9.000% 08/15/14 1,031,000 1,083,839 ----------------------- --------- ---------- Zeus Special Subsidiary Ltd. (a) 02/01/15 (9.250% 02/01/10) (b) 1,780,000 1,161,450 ----------------------- --------- ---------- 6,782,995 Telecommunication Equipment - 0.3% ----------------------- --------- ---------- Lucent Technologies, Inc. 6.450% 03/15/29 1,790,000 1,539,400 ----------------------- --------- ---------- 1,539,400 Telecommunication Services - 1.0% ----------------------- --------- ---------- Syniverse Technologies, Inc. 7.750% 08/15/13 (b) 1,210,000 1,229,662 ----------------------- --------- ---------- Time Warner Telecom, Inc. 10.125% 02/01/11 2,690,000 2,817,775 ----------------------- --------- ---------- Time Warner Telecom Holdings, Inc. 9.250% 02/15/14 750,000 770,625 ----------------------- --------- ---------- 4,818,062 See Accompanying Notes to Financial Statements. 10 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) COMMUNICATIONS - (continued) Telecommunication Services - (continued) Par ($) Value ($) - ---------------------------------------- --------------------- ---------- ---------- Telephone - Integrated - 3.9% --------------------- ---------- ---------- Axtel SA de CV 11.000% 12/15/13 1,175,000 1,313,063 --------------------- ---------- ---------- Cincinnati Bell, Inc. 7.000% 02/15/15 2,880,000 2,772,000 --------------------- ---------- ---------- Citizens Communications Co. 9.000% 08/15/31 2,280,000 2,262,900 --------------------- ---------- ---------- Qwest Capital Funding, Inc. 6.875% 07/15/28 3,205,000 2,892,512 --------------------- ---------- ---------- Qwest Communications International, Inc. 7.500% 02/15/14 (b) 2,180,000 2,212,700 --------------------- ---------- ---------- Qwest Corp. 7.500% 06/15/23 2,430,000 2,399,625 8.875% 03/15/12 3,050,000 3,438,875 --------------------- ---------- ---------- US LEC Corp. 12.716% 10/01/09 (c) 960,000 1,027,200 --------------------- ---------- ---------- 18,318,875 Wireless Equipment - 0.6% --------------------- ---------- ---------- American Towers, Inc. 7.250% 12/01/11 1,825,000 1,902,563 --------------------- ---------- ---------- SBA Telecommunications, Inc. (a) 12/15/11 (9.750% 12/15/07) 935,000 855,525 --------------------- ---------- ---------- 2,758,088 ---------- Telecommunication Services Total 51,075,120 ---------- COMMUNICATIONS TOTAL 86,745,290 CONSUMER CYCLICAL - 15.2% Airlines - 0.4% Airlines - 0.4% --------------------- ---------- ---------- Continental Airlines, Inc. 7.568% 12/01/06 2,080,000 1,976,000 --------------------- ---------- ---------- 1,976,000 ---------- Airlines Total 1,976,000 Apparel - 1.4% Apparel Manufacturers - 1.4% --------------------- ---------- ---------- Broder Brothers Co. 11.250% 10/15/10 1,430,000 1,315,600 --------------------- ---------- ---------- Levi Strauss & Co. 9.750% 01/15/15 3,145,000 3,255,075 --------------------- ---------- ---------- Phillips-Van Heusen Corp. 7.250% 02/15/11 1,010,000 1,025,150 8.125% 05/01/13 1,000,000 1,042,500 --------------------- ---------- ---------- 6,638,325 ---------- Apparel Total 6,638,325 See Accompanying Notes to Financial Statements. 11 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) CONSUMER CYCLICAL - (continued) Auto Manufacturers - 0.5% Par ($) Value ($) - ---------------------------------------------- ------------------- --------- --------- Auto - Cars/Light Trucks - 0.2% ------------------- --------- --------- General Motors Corp. 8.375% 07/15/33 1,210,000 825,825 ------------------- --------- --------- 825,825 Auto - Medium & Heavy Duty Trucks - 0.3% ------------------- --------- --------- Navistar International Corp. 7.500% 06/15/11 1,505,000 1,452,325 ------------------- --------- --------- 1,452,325 --------- Auto Manufacturers Total 2,278,150 Auto Parts & Equipment - 1.4% Auto/Truck Parts & Equipment - Original - 0.2% ------------------- --------- --------- Cooper-Standard Automotive, Inc. 7.000% 12/15/12 420,000 380,100 8.375% 12/15/14 950,000 717,250 ------------------- --------- --------- 1,097,350 Auto/Truck Parts & Equipment - Replacement - 0.6% ------------------- --------- --------- Commercial Vehicle Group 8.000% 07/01/13 (b) 1,475,000 1,460,250 ------------------- --------- --------- Rexnord Corp. 10.125% 12/15/12 1,360,000 1,470,500 ------------------- --------- --------- 2,930,750 Rubber - Tires - 0.6% ------------------- --------- --------- Goodyear Tire & Rubber Co. 9.000% 07/01/15 (b) 2,890,000 2,824,975 ------------------- --------- --------- 2,824,975 --------- Auto Parts & Equipment Total 6,853,075 Distribution/Wholesale - 0.2% Distribution/Wholesale - 0.2% ------------------- --------- --------- Buhrmann US, Inc. 7.875% 03/01/15 945,000 937,913 ------------------- --------- --------- 937,913 --------- Distribution/Wholesale Total 937,913 Entertainment - 1.3% Casino Services - 0.2% ------------------- --------- --------- Tunica-Biloxi Gaming Authority 9.000% 11/15/15 (b) 1,095,000 1,092,263 ------------------- --------- --------- 1,092,263 Gambling (Non-Hotel) - 0.3% ------------------- --------- --------- Global Cash Access LLC 8.750% 03/15/12 1,459,000 1,550,187 ------------------- --------- --------- 1,550,187 See Accompanying Notes to Financial Statements. 12 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) CONSUMER CYCLICAL - (continued) Entertainment - (continued) Par ($) Value ($) - ---------------------------------------- ------------------ --------- --------- Music - 0.4% ------------------ --------- --------- Steinway Musical Instruments, Inc. 8.750% 04/15/11 1,350,000 1,410,750 ------------------ --------- --------- Warner Music Group 7.375% 04/15/14 270,000 263,250 ------------------ --------- --------- 1,674,000 Resorts/Theme Parks - 0.4% ------------------ --------- --------- Six Flags, Inc. 9.625% 06/01/14 1,935,000 1,915,650 ------------------ --------- --------- 1,915,650 --------- Entertainment Total 6,232,100 Home Builders - 1.2% Building - Residential/Commercial - 1.2% ------------------ --------- --------- D.R. Horton, Inc. 9.750% 09/15/10 2,045,000 2,300,625 ------------------ --------- --------- K. Hovnanian Enterprises, Inc. 8.875% 04/01/12 1,435,000 1,485,225 10.500% 10/01/07 160,000 172,000 ------------------ --------- --------- Standard Pacific Corp. 7.000% 08/15/15 1,075,000 978,250 9.250% 04/15/12 625,000 637,500 ------------------ --------- --------- 5,573,600 --------- Home Builders Total 5,573,600 Home Furnishings - 0.2% Home Furnishings - 0.2% ------------------ --------- --------- WII Components, Inc. 10.000% 02/15/12 1,160,000 1,119,400 ------------------ --------- --------- 1,119,400 --------- Home Furnishings Total 1,119,400 Leisure Time - 0.7% Leisure & Recreational Products - 0.1% ------------------ --------- --------- Bombardier Recreational Products, Inc. 8.375% 12/15/13 190,000 189,525 ------------------ --------- --------- 189,525 Recreational Centers - 0.6% ------------------ --------- --------- Equinox Holdings, Inc. 9.000% 12/15/09 1,110,000 1,137,750 ------------------ --------- --------- Town Sports International, Inc. (a) 02/01/14 (11.000% 02/01/09) 2,640,000 1,755,600 ------------------ --------- --------- 2,893,350 --------- Leisure Time Total 3,082,875 See Accompanying Notes to Financial Statements. 13 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) CONSUMER CYCLICAL - (continued) Lodging - 5.9% Par ($) Value ($) - --------------------------------------------------- -------------------- --------- ---------- Casino Hotels - 5.9% -------------------- --------- ---------- CCM Merger, Inc. 8.000% 08/01/13 (b) 450,000 435,375 -------------------- --------- ---------- Chukchansi Economic Development Authority 8.000% 11/15/13 (b) 1,495,000 1,502,475 -------------------- --------- ---------- Circus & Eldorado/Silver Legacy Capital Corp. 10.125% 03/01/12 1,870,000 1,977,525 -------------------- --------- ---------- Eldorado Casino Shreveport/Shreveport Capital Corp. 10.000% 08/01/12 5,341,287 5,020,810 -------------------- --------- ---------- Greektown Holdings 10.750% 12/01/13 (b) 1,495,000 1,504,344 -------------------- --------- ---------- Hard Rock Hotel, Inc. 8.875% 06/01/13 2,205,000 2,353,837 -------------------- --------- ---------- Inn of the Mountain Gods Resort & Casino 12.000% 11/15/10 1,620,000 1,692,900 -------------------- --------- ---------- Kerzner International Ltd. 6.750% 10/01/15 (b) 2,280,000 2,205,900 -------------------- --------- ---------- MGM Mirage 6.750% 09/01/12 1,845,000 1,854,225 8.500% 09/15/10 575,000 625,313 -------------------- --------- ---------- Mohegan Tribal Gaming Authority 6.125% 02/15/13 380,000 374,300 -------------------- --------- ---------- Penn National Gaming, Inc. 6.750% 03/01/15 1,970,000 1,920,750 -------------------- --------- ---------- Pinnacle Entertainment, Inc. 8.750% 10/01/13 1,685,000 1,769,250 -------------------- --------- ---------- San Pasqual Casino 8.000% 09/15/13 (b) 1,260,000 1,253,700 -------------------- --------- ---------- Seneca Gaming Corp. 7.250% 05/01/12 620,000 627,750 -------------------- --------- ---------- Station Casinos, Inc. 6.000% 04/01/12 1,785,000 1,780,537 -------------------- --------- ---------- Wynn Las Vegas LLC 6.625% 12/01/14 1,455,000 1,400,438 -------------------- --------- ---------- 28,299,429 ---------- Lodging Total 28,299,429 Retail - 1.8% Retail - Automobiles - 0.3% -------------------- --------- ---------- Asbury Automotive Group, Inc. 8.000% 03/15/14 1,680,000 1,579,200 -------------------- --------- ---------- 1,579,200 Retail - Drug Stores - 0.2% -------------------- --------- ---------- Rite Aid Corp. 7.500% 01/15/15 625,000 578,125 9.250% 06/01/13 200,000 182,000 -------------------- --------- ---------- 760,125 Retail - Home Furnishings - 0.4% -------------------- --------- ---------- Tempur-Pedic, Inc. 10.250% 08/15/10 1,771,000 1,903,825 -------------------- --------- ---------- 1,903,825 See Accompanying Notes to Financial Statements. 14 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) CONSUMER CYCLICAL - (continued) Retail - (continued) Par ($) Value ($) - ------------------------------------- -------------------- --------- ---------- Retail - Propane Distributors - 0.4% -------------------- --------- ---------- Ferrellgas Partners LP 8.750% 06/15/12 1,355,000 1,324,512 -------------------- --------- ---------- Suburban Propane Partners LP/Suburban Energy Finance Corp. 6.875% 12/15/13 920,000 848,700 -------------------- --------- ---------- 2,173,212 Retail - Restaurants - 0.3% -------------------- --------- ---------- Landry's Restaurants, Inc. 7.500% 12/15/14 1,355,000 1,266,925 -------------------- --------- ---------- 1,266,925 Retail - Video Rental - 0.2% -------------------- --------- ---------- Movie Gallery, Inc. 11.000% 05/01/12 1,230,000 922,500 -------------------- --------- ---------- 922,500 ---------- Retail Total 8,605,787 Textiles - 0.2% Textile - Products - 0.2% -------------------- --------- ---------- INVISTA 9.250% 05/01/12 (b) 890,000 954,525 -------------------- --------- ---------- 954,525 ---------- Textiles Total 954,525 ---------- CONSUMER CYCLICAL TOTAL 72,551,179 CONSUMER NON-CYCLICAL - 13.0% Agriculture - 0.2% -------------------- --------- ---------- Alliance One International, Inc. 11.000% 05/15/12 (b) 1,220,000 1,058,350 -------------------- --------- ---------- Agriculture Total 1,058,350 Beverages - 0.2% Beverages - Wine/Spirits - 0.2% -------------------- --------- ---------- Constellation Brands, Inc. 8.000% 02/15/08 780,000 815,100 8.125% 01/15/12 320,000 332,800 -------------------- --------- ---------- 1,147,900 ---------- Beverages Total 1,147,900 Biotechnology - 0.5% Medical - Biomedical/Gene - 0.5% -------------------- --------- ---------- Bio-Rad Laboratories, Inc. 7.500% 08/15/13 2,015,000 2,120,788 -------------------- --------- ---------- 2,120,788 ---------- Biotechnology Total 2,120,788 See Accompanying Notes to Financial Statements. 15 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) CONSUMER NON-CYCLICAL - (continued) Commercial Services - 3.4% Par ($) Value ($) - --------------------------------------- -------------------- --------- ---------- Commercial Services - 0.4% -------------------- --------- ---------- Iron Mountain, Inc. 7.750% 01/15/15 1,620,000 1,628,100 -------------------- --------- ---------- Mac-Gray Corp. 7.625% 08/15/15 (b) 440,000 443,300 -------------------- --------- ---------- 2,071,400 Commercial Services - Finance - 0.4% -------------------- --------- ---------- Dollar Financial Group, Inc. 9.750% 11/15/11 1,965,000 2,019,038 -------------------- --------- ---------- 2,019,038 Consulting Services - 0.2% -------------------- --------- ---------- FTI Consulting 7.625% 06/15/13 (b) 960,000 986,400 -------------------- --------- ---------- 986,400 Funeral Services & Related Items - 0.5% -------------------- --------- ---------- Service Corp. International 7.700% 04/15/09 2,135,000 2,252,425 -------------------- --------- ---------- 2,252,425 Printing - Commercial - 0.5% -------------------- --------- ---------- Sheridan Group 10.250% 08/15/11 965,000 1,003,600 -------------------- --------- ---------- Vertis, Inc. 13.500% 12/07/09 (b) 1,570,000 1,240,300 -------------------- --------- ---------- 2,243,900 Private Corrections - 0.7% -------------------- --------- ---------- Corrections Corp. of America 6.250% 03/15/13 1,955,000 1,955,000 -------------------- --------- ---------- GEO Group, Inc. 8.250% 07/15/13 1,400,000 1,372,000 -------------------- --------- ---------- 3,327,000 Rental Auto/Equipment - 0.7% -------------------- --------- ---------- Ashtead Holdings PLC 8.625% 08/01/15 (b) 1,615,000 1,663,450 -------------------- --------- ---------- NationsRent, Inc. 9.500% 10/15/10 1,455,000 1,589,587 -------------------- --------- ---------- 3,253,037 ---------- Commercial Services Total 16,153,200 Cosmetics/Personal Care - 0.5% Cosmetics & Toiletries - 0.5% -------------------- --------- ---------- DEL Laboratories, Inc. 8.000% 02/01/12 1,490,000 1,199,450 -------------------- --------- ---------- Elizabeth Arden, Inc. 7.750% 01/15/14 1,395,000 1,395,000 -------------------- --------- ---------- 2,594,450 ---------- Cosmetics/Personal Care Total 2,594,450 See Accompanying Notes to Financial Statements. 16 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) CONSUMER NON-CYCLICAL - (continued) Food - 1.8% Par ($) Value ($) - ---------------------------------------- ------------------ --------- --------- Food - Confectionery - 0.4% ------------------ --------- --------- Merisant Co. 9.500% 07/15/13 1,590,000 1,033,500 ------------------ --------- --------- Merisant Worldwide, Inc. (a) 11/15/08 (12.250% 05/15/14) 4,820,000 698,900 ------------------ --------- --------- 1,732,400 Food - Miscellaneous/Diversified - 1.0% ------------------ --------- --------- Dole Food Co., Inc. 8.625% 05/01/09 1,650,000 1,699,500 ------------------ --------- --------- Pinnacle Foods Holding Corp. 8.250% 12/01/13 2,080,000 2,015,000 ------------------ --------- --------- Reddy Ice Holdings, Inc. (a) 11/01/12 (10.500% 11/01/08) 1,420,000 1,107,600 ------------------ --------- --------- 4,822,100 Food - Retail - 0.4% ------------------ --------- --------- Stater Brothers Holdings, Inc. 8.125% 06/15/12 1,935,000 1,920,488 ------------------ --------- --------- 1,920,488 --------- Food Total 8,474,988 Healthcare Services - 3.3% Dialysis Centers - 0.3% ------------------ --------- --------- DaVita, Inc. 7.250% 03/15/15 1,330,000 1,353,275 ------------------ --------- --------- 1,353,275 Medical - HMO - 0.2% ------------------ --------- --------- Coventry Health Care, Inc. 8.125% 02/15/12 945,000 1,013,513 ------------------ --------- --------- 1,013,513 Medical - Hospitals - 0.8% ------------------ --------- --------- HCA, Inc. 7.875% 02/01/11 1,090,000 1,165,668 ------------------ --------- --------- Tenet Healthcare Corp. 9.875% 07/01/14 2,825,000 2,846,187 ------------------ --------- --------- 4,011,855 Medical - Outpatient/Home Medical - 0.2% ------------------ --------- --------- Select Medical Corp. 7.625% 02/01/15 965,000 916,750 ------------------ --------- --------- 916,750 MRI/Medical Diagnostic Imaging - 1.2% ------------------ --------- --------- InSight Health Services Corp. 9.875% 11/01/11 1,350,000 1,076,625 ------------------ --------- --------- MedQuest, Inc. 11.875% 08/15/12 2,095,000 2,100,238 ------------------ --------- --------- MQ Associates, Inc. (a) 08/15/12 (12.250% 08/15/08) 4,665,000 2,670,712 ------------------ --------- --------- 5,847,575 See Accompanying Notes to Financial Statements. 17 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) CONSUMER NON-CYCLICAL - (continued) Healthcare Services - (continued) Par ($) Value ($) - -------------------------------------------- -------------------- ------------- ---------- Physician Practice Management - 0.6% -------------------- ------------- ---------- US Oncology Holdings, Inc. 9.264% 03/15/15 (c) 745,000 731,962 -------------------- ------------- ---------- US Oncology, Inc. 9.000% 08/15/12 1,780,000 1,891,250 -------------------- ------------- ---------- 2,623,212 ---------- Healthcare Services Total 15,766,180 Household Products/Wares - 1.0% Consumer Products - Miscellaneous - 0.8% -------------------- ------------- ---------- Amscan Holdings, Inc. 8.750% 05/01/14 1,420,000 1,065,000 -------------------- ------------- ---------- Playtex Products, Inc. 9.375% 06/01/11 1,545,000 1,622,250 -------------------- ------------- ---------- Visant Corp. 7.625% 10/01/12 1,140,000 1,128,600 -------------------- ------------- ---------- 3,815,850 Office Supplies & Forms - 0.2% -------------------- ------------- ---------- ACCO Brands Corp. 7.625% 08/15/15 1,110,000 1,037,850 -------------------- ------------- ---------- 1,037,850 ---------- Household Products/Wares Total 4,853,700 Pharmaceuticals - 2.1% Medical - Drugs - 0.7% -------------------- ------------- ---------- Elan Finance PLC 7.750% 11/15/11 2,330,000 2,137,775 -------------------- ------------- ---------- Warner Chilcott Corp. 8.750% 02/01/15 (b) 1,300,000 1,183,000 -------------------- ------------- ---------- 3,320,775 Medical - Generic Drugs - 0.4% -------------------- ------------- ---------- Mylan Laboratories, Inc. 6.375% 08/15/15 (b) 2,015,000 2,004,925 -------------------- ------------- ---------- 2,004,925 Medical - Wholesale Drug Distribution - 0.7% -------------------- ------------- ---------- AmerisourceBergen Corp. 5.875% 09/15/15 (b) 1,565,000 1,568,912 -------------------- ------------- ---------- Nycomed A/S PIK, 11.750% 09/15/13 (b) EUR 1,616,891 1,932,344 -------------------- ------------- ---------- 3,501,256 Vitamins & Nutrition Products - 0.3% -------------------- ------------- ---------- NBTY, Inc. 7.125% 10/01/15 (b) 1,260,000 1,212,750 -------------------- ------------- ---------- 1,212,750 ---------- Pharmaceuticals Total 10,039,706 ---------- CONSUMER NON-CYCLICAL TOTAL 62,209,262 See Accompanying Notes to Financial Statements. 18 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) ENERGY - 8.1% Coal - 0.4% Par ($) Value ($) - ----------------------------------------------- ------------------- --------- ---------- Coal - 0.4% ------------------- --------- ---------- Arch Western Finance LLC 6.750% 07/01/13 1,835,000 1,853,350 ------------------- --------- ---------- 1,853,350 ---------- Coal Total 1,853,350 ---------- Oil & Gas - 3.0% Oil & Gas Drilling - 0.2% ------------------- --------- ---------- Pride International, Inc. 7.375% 07/15/14 960,000 1,032,000 ------------------- --------- ---------- 1,032,000 Oil Companies - Exploration & Production - 2.3% ------------------- --------- ---------- Chesapeake Energy Corp. 6.375% 06/15/15 1,145,000 1,110,650 7.500% 06/15/14 1,145,000 1,205,113 ------------------- --------- ---------- Compton Petroleum Corp. 7.625% 12/01/13 (b) 1,415,000 1,418,537 ------------------- --------- ---------- Delta Petroleum Corp. 7.000% 04/01/15 1,060,000 991,100 ------------------- --------- ---------- Forest Oil Corp. 8.000% 12/15/11 1,080,000 1,188,000 ------------------- --------- ---------- Magnum Hunter Resources, Inc. 9.600% 03/15/12 1,133,000 1,223,640 ------------------- --------- ---------- Pogo Producing Co. 6.625% 03/15/15 1,100,000 1,072,500 ------------------- --------- ---------- Whiting Petroleum Corp. 7.250% 05/01/12 2,570,000 2,582,850 ------------------- --------- ---------- 10,792,390 Oil Refining & Marketing - 0.5% ------------------- --------- ---------- Premcor Refining Group, Inc. 7.500% 06/15/15 1,015,000 1,073,363 ------------------- --------- ---------- Tesoro Corp. 6.625% 11/01/15 (b) 1,465,000 1,461,337 ------------------- --------- ---------- 2,534,700 ---------- Oil & Gas Total 14,359,090 Oil & Gas Services - 0.7% Oil - Field Services - 0.7% ------------------- --------- ---------- Hornbeck Offshore Services, Inc. 6.125% 12/01/14 (b) 1,755,000 1,702,350 ------------------- --------- ---------- Newpark Resources, Inc. 8.625% 12/15/07 1,660,000 1,660,000 ------------------- --------- ---------- 3,362,350 ---------- Oil & Gas Services Total 3,362,350 See Accompanying Notes to Financial Statements. 19 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) ENERGY - (continued) Pipelines - 4.0% Par ($) Value ($) - ----------------------------------------- ----------------------- ------------ ---------- Pipelines - 4.0% ----------------------- ------------ ---------- Coastal Corp. 7.625% 09/01/08 500,000 504,375 7.750% 06/15/10 2,685,000 2,711,850 ----------------------- ------------ ---------- Colorado Interstate Gas Co. 6.800% 11/15/15 (b) 2,145,000 2,150,362 ----------------------- ------------ ---------- Northwest Pipeline Corp. 8.125% 03/01/10 915,000 972,188 ----------------------- ------------ ---------- Pacific Energy Partners LP/Pacific Energy Finance Corp. 6.250% 09/15/15 (b) 1,960,000 1,925,700 ----------------------- ------------ ---------- Sonat, Inc. 7.625% 07/15/11 4,860,000 4,847,850 ----------------------- ------------ ---------- Southern Natural Gas Co. 8.875% 03/15/10 1,630,000 1,744,100 ----------------------- ------------ ---------- Williams Companies, Inc. 6.375% 10/01/10 (b) 3,030,000 2,999,700 8.125% 03/15/12 1,015,000 1,096,200 ----------------------- ------------ ---------- 18,952,325 ---------- Pipelines Total 18,952,325 ---------- ENERGY TOTAL 38,527,115 FINANCIALS - 2.9% Diversified Financial Services - 2.4% Finance - Auto Loans - 1.3% ----------------------- ------------ ---------- Ford Motor Credit Co. 7.375% 02/01/11 1,670,000 1,524,159 ----------------------- ------------ ---------- General Motors Acceptance Corp. 8.000% 11/01/31 5,045,000 4,999,393 ----------------------- ------------ ---------- 6,523,552 Finance - Investment Banker/Broker - 1.1% ----------------------- ------------ ---------- E*Trade Financial Corp. 8.000% 06/15/11 1,680,000 1,713,600 ----------------------- ------------ ---------- LaBranche & Co., Inc. 11.000% 05/15/12 3,155,000 3,470,500 ----------------------- ------------ ---------- 5,184,100 ---------- Diversified Financial Services Total 11,707,652 Real Estate Investment Trusts - 0.2% REITS - Mortgage - 0.2% ----------------------- ------------ ---------- Thornburg Mortgage, Inc. 8.000% 05/15/13 985,000 960,375 ----------------------- ------------ ---------- 960,375 ---------- Real Estate Investment Trusts Total 960,375 See Accompanying Notes to Financial Statements. 20 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) FINANCIALS - (continued) Savings & Loans - 0.3% Par ($) Value ($) - --------------------------------------------- ----------------------- --------- ---------- Savings & Loans/Thrifts - Western US - 0.3% ----------------------- --------- ---------- Western Financial Bank 9.625% 05/15/12 1,310,000 1,467,200 ----------------------- --------- ---------- 1,467,200 ---------- Savings & Loans Total 1,467,200 ---------- FINANCIALS TOTAL 14,135,227 INDUSTRIALS - 14.3% Aerospace & Defense - 1.8% Aerospace/Defense - Equipment - 1.4% ----------------------- --------- ---------- Argo-Tech Corp. 9.250% 06/01/11 1,250,000 1,284,375 ----------------------- --------- ---------- BE Aerospace, Inc. 8.500% 10/01/10 1,655,000 1,766,713 ----------------------- --------- ---------- Sequa Corp. 8.875% 04/01/08 1,048,000 1,089,920 9.000% 08/01/09 780,000 820,950 ----------------------- --------- ---------- Standard Aero Holdings, Inc. 8.250% 09/01/14 1,040,000 863,200 ----------------------- --------- ---------- TransDigm, Inc. 8.375% 07/15/11 1,160,000 1,200,600 ----------------------- --------- ---------- 7,025,758 Electronics - Military - 0.4% ----------------------- --------- ---------- Condor Systems, Inc. 11.875% 05/01/09 (d)(e) 4,000,000 40,000 ----------------------- --------- ---------- L-3 Communications Corp. 6.375% 10/15/15 (b) 1,745,000 1,727,550 ----------------------- --------- ---------- 1,767,550 ---------- Aerospace & Defense Total 8,793,308 Building Materials - 0.6% Building & Construction Products - Miscellaneous - 0.4% ----------------------- --------- ---------- Nortek, Inc. 8.500% 09/01/14 1,110,000 1,065,600 ----------------------- --------- ---------- NTK Holdings, Inc. (a) 03/01/14 (10.750% 09/01/09) 1,215,000 735,075 ----------------------- --------- ---------- 1,800,675 Building Products - Cement/Aggregation - 0.2% ----------------------- --------- ---------- RMCC Acquisition Co. 9.500% 11/01/12 (b) 1,250,000 1,256,250 ----------------------- --------- ---------- 1,256,250 ---------- Building Materials Total 3,056,925 See Accompanying Notes to Financial Statements. 21 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) INDUSTRIALS - (continued) Electrical Components & Equipment - 0.2% Par ($) Value ($) - ---------------------------------------------- --------------------------- ----------- --------- Wire & Cable Products - 0.2% --------------------------- ----------- --------- Coleman Cable, Inc. 9.875% 10/01/12 1,360,000 1,169,600 --------------------------- ----------- --------- 1,169,600 --------- Electrical Components & Equipment Total 1,169,600 Electronics - 0.5% Electronic Components - Miscellaneous - 0.5% --------------------------- ----------- --------- Flextronics International Ltd. 6.250% 11/15/14 1,470,000 1,440,600 --------------------------- ----------- --------- Sanmina-SCI Corp. 6.750% 03/01/13 855,000 816,525 --------------------------- ----------- --------- 2,257,125 --------- Electronics Total 2,257,125 Engineering & Construction - 0.5% Building & Construction - Miscellaneous - 0.5% --------------------------- ----------- --------- J. Ray McDermott SA 11.500% 12/15/13 (b) 1,960,000 2,241,750 --------------------------- ----------- --------- 2,241,750 --------- Engineering & Construction Total 2,241,750 Environmental Control - 1.3% Non-Hazardous Waste Disposal - 1.2% --------------------------- ----------- --------- Allied Waste North America, Inc. 7.250% 03/15/15 2,025,000 2,027,531 7.875% 04/15/13 2,010,000 2,090,400 --------------------------- ----------- --------- Waste Services, Inc. 9.500% 04/15/14 1,479,000 1,471,605 --------------------------- ----------- --------- 5,589,536 Recycling - 0.1% --------------------------- ----------- --------- Aleris International, Inc. 9.000% 11/15/14 670,000 685,075 --------------------------- ----------- --------- 685,075 --------- Environmental Control Total 6,274,611 Hand/Machine Tools - 0.1% Machine Tools & Related Products - 0.1% --------------------------- ----------- --------- Newcor, Inc. 6.000% 01/31/13 (8.500% 01/31/08) (e)(f) 847,510 525,456 --------------------------- ----------- --------- 525,456 --------- Hand/Machine Tools Total 525,456 Machinery - Diversified - 0.7% Machinery - General Industry - 0.2% --------------------------- ----------- --------- Douglas Dynamics LLC 7.750% 01/15/12 (b) 1,300,000 1,254,500 --------------------------- ----------- --------- 1,254,500 See Accompanying Notes to Financial Statements. 22 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) INDUSTRIALS - (continued) Machinery - Diversified - (continued) Par ($) Value ($) - ------------------------------------------------- --------------------- ----------- --------- Machinery - Material Handling - 0.5% --------------------- ----------- --------- Columbus McKinnon Corp. 8.875% 11/01/13 (b) 2,175,000 2,262,000 --------------------- ----------- --------- 2,262,000 --------- Machinery - Diversified Total 3,516,500 Metal Fabricate/Hardware - 1.1% Metal Processors & Fabrication - 0.7% --------------------- ----------- --------- Mueller Group, Inc. 10.000% 05/01/12 1,065,000 1,118,250 --------------------- ----------- --------- Mueller Holdings, Inc. (a) 04/15/14 (14.750% 04/15/09) 1,190,000 868,700 --------------------- ----------- --------- TriMas Corp. 9.875% 06/15/12 1,645,000 1,357,125 --------------------- ----------- --------- 3,344,075 Metal Products - Fasteners - 0.4% --------------------- ----------- --------- FastenTech, Inc. 11.500% 05/01/11 1,800,000 1,773,000 --------------------- ----------- --------- 1,773,000 --------- Metal Fabricate/Hardware Total 5,117,075 Miscellaneous Manufacturing - 2.0% Diversified Manufacturing Operators - 1.7% --------------------- ----------- --------- Bombardier, Inc. 6.300% 05/01/14 (b) 2,961,000 2,576,070 --------------------- ----------- --------- J.B. Poindexter & Co. 8.750% 03/15/14 1,715,000 1,500,625 --------------------- ----------- --------- Koppers Industries, Inc. 9.875% 10/15/13 1,625,000 1,771,250 --------------------- ----------- --------- Trinity Industries, Inc. 6.500% 03/15/14 2,136,000 2,087,940 --------------------- ----------- --------- 7,935,885 Miscellaneous Manufacturing - 0.3% --------------------- ----------- --------- Samsonite Corp. 8.875% 06/01/11 1,615,000 1,647,300 --------------------- ----------- --------- 1,647,300 --------- Miscellaneous Manufacturing Total 9,583,185 Packaging & Containers - 2.4% Containers - Metal/Glass - 1.1% --------------------- ----------- --------- Crown Americas LLC & Crown Americas Capital Corp. 7.750% 11/15/15 (b) 1,830,000 1,857,450 --------------------- ----------- --------- Owens-Brockway Glass Container, Inc. 6.750% 12/01/14 1,300,000 1,244,750 8.250% 05/15/13 1,045,000 1,073,737 --------------------- ----------- --------- Owens-Illinois, Inc. 7.500% 05/15/10 770,000 771,925 --------------------- ----------- --------- 4,947,862 See Accompanying Notes to Financial Statements. 23 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) INDUSTRIALS - (continued) Packaging & Containers - (continued) Par ($) Value ($) - --------------------------------------------- -------------------- ------------- ---------- Containers - Paper/Plastic - 1.3% -------------------- ------------- ---------- Consolidated Container Co. LLC (a) 06/15/09 (10.750% 06/15/07) 1,065,000 901,256 -------------------- ------------- ---------- Jefferson Smurfit Corp. 8.250% 10/01/12 1,575,000 1,531,688 PIK, 11.500% 10/01/15 (b) EUR 1,831,548 1,898,139 -------------------- ------------- ---------- MDP Acquisitions PLC 9.625% 10/01/12 1,990,000 1,960,150 -------------------- ------------- ---------- 6,291,233 ---------- Packaging & Containers Total 11,239,095 Transportation - 3.1% Transportation - Marine - 1.3% -------------------- ------------- ---------- Ship Finance International Ltd. 8.500% 12/15/13 3,010,000 2,889,600 -------------------- ------------- ---------- Stena AB 7.500% 11/01/13 1,805,000 1,737,313 9.625% 12/01/12 1,205,000 1,301,400 -------------------- ------------- ---------- 5,928,313 Transportation - Railroad - 0.6% -------------------- ------------- ---------- TFM SA de CV 9.375% 05/01/12 (b) 1,955,000 2,140,725 12.500% 06/15/12 780,000 896,025 -------------------- ------------- ---------- 3,036,750 Transportation - Services - 0.8% -------------------- ------------- ---------- CHC Helicopter Corp. 7.375% 05/01/14 2,015,000 2,030,112 -------------------- ------------- ---------- Petroleum Helicopters, Inc. 9.375% 05/01/09 1,875,000 1,982,813 -------------------- ------------- ---------- 4,012,925 Transportation - Trucks - 0.4% -------------------- ------------- ---------- QDI LLC 9.000% 11/15/10 1,970,000 1,773,000 -------------------- ------------- ---------- 1,773,000 ---------- Transportation Total 14,750,988 ---------- INDUSTRIALS TOTAL 68,525,618 TECHNOLOGY - 0.3% Semiconductors - 0.3% Electronic Components - Semiconductors - 0.3% -------------------- ------------- ---------- Amkor Technology, Inc. 9.250% 02/15/08 1,250,000 1,203,125 -------------------- ------------- ---------- 1,203,125 ---------- Semiconductors Total 1,203,125 ---------- TECHNOLOGY TOTAL 1,203,125 See Accompanying Notes to Financial Statements. 24 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Corporate Fixed-Income Bonds & Notes - (continued) UTILITIES - 4.8% Electric - 4.8% Par ($) Value ($) - --------------------------------- ------------------------------------------ --------- ----------- Electric - Generation - 1.1% ------------------------------------------ --------- ----------- AES Corp. 9.000% 05/15/15 (b) 610,000 667,950 9.500% 06/01/09 1,773,000 1,910,408 ------------------------------------------ --------- ----------- Edison Mission Energy 7.730% 06/15/09 2,090,000 2,184,050 ------------------------------------------ --------- ----------- Texas Genco LLC 6.875% 12/15/14 (b) 525,000 561,750 ------------------------------------------ --------- ----------- 5,324,158 Electric - Integrated - 1.5% ------------------------------------------ --------- ----------- CMS Energy Corp. 8.900% 07/15/08 1,900,000 2,030,625 ------------------------------------------ --------- ----------- Nevada Power Co. 9.000% 08/15/13 640,000 706,464 10.875% 10/15/09 1,147,000 1,255,965 ------------------------------------------ --------- ----------- Sierra Pacific Resources 6.750% 08/15/17 (b) 1,570,000 1,571,962 ------------------------------------------ --------- ----------- TECO Energy, Inc. 7.000% 05/01/12 1,205,000 1,259,225 ------------------------------------------ --------- ----------- 6,824,241 Independent Power Producer - 2.2% ------------------------------------------ --------- ----------- Calpine Generating Co. LLC 10.041% 04/01/10 (c) 1,430,000 1,447,875 ------------------------------------------ --------- ----------- Dynegy Holdings, Inc. 6.875% 04/01/11 1,275,000 1,239,937 7.125% 05/15/18 870,000 778,650 9.875% 07/15/10 (b) 1,230,000 1,340,700 ------------------------------------------ --------- ----------- MSW Energy Holdings LLC 7.375% 09/01/10 910,000 930,475 8.500% 09/01/10 1,260,000 1,335,600 ------------------------------------------ --------- ----------- Orion Power Holdings, Inc. 12.000% 05/01/10 3,065,000 3,509,425 ------------------------------------------ --------- ----------- 10,582,662 ----------- Electric Total 22,731,061 ----------- UTILITIES TOTAL 22,731,061 Total Corporate Fixed-Income Bonds & Notes (cost of $418,623,034) 404,923,668 See Accompanying Notes to Financial Statements. 25 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Preferred Stocks - 2.7% COMMUNICATIONS - 1.2% Media - 1.2% Shares Value ($) - -------------------------------------- ------------------------------------ --------- ---------- PTV Inc. 10.000% 18 31 ------------------------------------ --------- ---------- Spanish Broadcasting System, Inc. PIK, 10.750% 5,468 5,850,760 ------------------------------------ --------- ---------- Media Total 5,850,791 ---------- COMMUNICATIONS TOTAL 5,850,791 CONSUMER CYCLICAL - 0.2% Lodging - 0.2% ------------------------------------ --------- ---------- La Quinta Corp. 9.000% 46,965 1,183,518 ------------------------------------ --------- ---------- Lodging Total 1,183,518 ---------- CONSUMER CYCLICAL TOTAL 1,183,518 FINANCIALS - 1.3% Real Estate Investment Trusts - 1.3% ------------------------------------ --------- ---------- iStar Financial, Inc. Series E, 7.850% 86,769 2,166,518 Series F, 7.800% 57,000 1,416,096 ------------------------------------ --------- ---------- Sovereign Real Estate Investment Corp. 12.000% (b) 1,800,000 2,592,000 ------------------------------------ --------- ---------- Real Estate Investment Trusts Total 6,174,614 ---------- FINANCIALS TOTAL 6,174,614 Total Preferred Stocks (cost of $12,565,049) 13,208,923 Common Stocks - 1.5% CONSUMER DISCRETIONARY - 0.3% - -------------------------------------- ------------------------------------ --------- ---------- Hotels, Restaurants & Leisure - 0.3% Pinnacle Entertainment, Inc. (g) 35,300 843,317 Shreveport Gaming Holdings, Inc. (g) 36,086 523,969 ------------------------------------ --------- ---------- Hotels, Restaurants & Leisure Total 1,367,286 ---------- CONSUMER DISCRETIONARY TOTAL 1,367,286 INDUSTRIALS - 0.1% - -------------------------------------- ------------------------------------ --------- ---------- Commercial Services & Supplies - 0.1% Allied Waste Industries, Inc. (g) 72,500 609,725 Fairlane Management Corp. (g)(h) 50,004 -- ------------------------------------ --------- ---------- Commercial Services & Supplies Total 609,725 ---------- INDUSTRIALS TOTAL 609,725 MATERIALS - 0.2% - -------------------------------------- ------------------------------------ --------- ---------- Chemicals - 0.2% Lyondell Chemical Co. 30,000 762,900 ------------------------------------ --------- ---------- Chemicals Total 762,900 ---------- MATERIALS TOTAL 762,900 See Accompanying Notes to Financial Statements. 26 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Common Stocks - (continued) TELECOMMUNICATION SERVICES - 0.8% Shares Value ($) - --------------------------------------------- ------------------------------- ------------ --------- Diversified Telecommunication Services - 0.2% NTL, Inc. (g) 14,154 824,187 ------------------------------- ------------ --------- Diversified Telecommunication Services Total 824,187 ------------------------------- ------------ --------- Wireless Telecommunication Services - 0.6% Alamosa Holdings, Inc. (g) 57,483 1,062,286 Sprint Nextel Corp. 76,922 1,926,127 ------------------------------- ------------ --------- Wireless Telecommunication Services Total 2,988,413 --------- TELECOMMUNICATION SERVICES TOTAL 3,812,600 UTILITIES - 0.1% - --------------------------------------------- ------------------------------- ------------ --------- Independent Power Producers & Energy Traders - 0.1% Dynegy, Inc., Class A (g) 113,000 541,270 ------------------------------- ------------ --------- Independent Power Producers & Energy Traders Total 541,270 --------- UTILITIES TOTAL 541,270 Total Common Stocks (cost of $7,144,897) 7,093,781 Convertible Bonds - 0.8% COMMUNICATIONS - 0.6% Telecommunication Services - 0.6% Par ($) - ---------------------------------------- ----------------------- --------- --------- Telecommunication Equipment - 0.5% ----------------------- --------- --------- Nortel Networks Corp. 4.250% 09/01/08 2,605,000 2,442,187 ----------------------- --------- --------- 2,442,187 Telephone - Integrated - 0.1% ----------------------- --------- --------- Qwest Communications International, Inc. 3.250% 11/15/25 340,000 370,600 ----------------------- --------- --------- 370,600 --------- Telecommunication Services Total 2,812,787 --------- COMMUNICATIONS TOTAL 2,812,787 UTILITIES - 0.2% Electric - 0.2% - ---------------------------------------- Independent Power Producer - 0.2% ----------------------- --------- --------- Mirant Corp. 2.500% 06/15/21 (d) 935,000 981,750 ----------------------- --------- --------- 981,750 --------- Electric Total 981,750 --------- UTILITIES TOTAL 981,750 Total Convertible Bonds (cost of $3,437,182) 3,794,537 See Accompanying Notes to Financial Statements. 27 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Municipal Bond (Taxable) - 0.7% CALIFORNIA - 0.7% Par ($) Value ($) ---------------------------------- ----------------------- --------- --------- CA Cabazon Band Mission Indians 13.000% 10/01/11 3,250,000 3,283,832 --------- CALIFORNIA TOTAL 3,283,832 Total Municipal Bond (Taxable) (cost of $3,250,000) 3,283,832 Warrants (g) - 0.0% COMMUNICATIONS - 0.0% Media - 0.0% Units ---------------------------------- ----------------------- --------- --------- Broadcast Services/Programs - 0.0% ----------------------- --------- --------- XM Satellite Radio Holdings, Inc. Expires 03/15/10 2,435 109,575 ----------------------- --------- --------- 109,575 --------- Media Total 109,575 --------- Telecommunication Services - 0.0% Cellular Telecommunications - 0.0% ----------------------- --------- --------- UbiquiTel, Inc. Expires 04/15/10 (b)(e) 5,250 52 ----------------------- --------- --------- 52 Telecommunication Services - 0.0% ----------------------- --------- --------- Jazztel PLC Expires 07/15/10 (e)(h) 1,435 -- ----------------------- --------- --------- -- --------- Telecommunication Services Total 52 --------- COMMUNICATIONS TOTAL 109,627 CONSUMER NON-CYCLICAL - 0.0% Food - 0.0% ---------------------------------- Food - Retail - 0.0% ----------------------- --------- --------- Pathmark Stores Inc. Expires 09/19/10 58,758 19,067 ----------------------- --------- --------- 19,067 --------- Food Total 19,067 --------- CONSUMER NON-CYCLICAL TOTAL 19,067 See Accompanying Notes to Financial Statements. 28 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Warrants - (continued) INDUSTRIALS - 0.0% Metal Fabricate/Hardware - 0.0% Units Value ($) - ------------------------------------- -------------------------------------------------- ---------- ----------- Metal Processors & Fabrication - 0.0% -------------------------------------------------- ---------- ----------- Mueller Holdings, Inc. Expires 04/15/14 (e) 1,310 1,546 -------------------------------------------------- ---------- ----------- 1,546 ----------- Metal Fabricate/Hardware Total 1,546 Transportation - 0.0% Transportation - Trucks - 0.0% -------------------------------------------------- ---------- ----------- QDI LLC Expires 01/15/07 (b)(e) 10,207 32,458 -------------------------------------------------- ---------- ----------- 32,458 ----------- Transportation Total 32,458 ----------- INDUSTRIALS TOTAL 34,004 Total Warrants (cost of $7,829,465) 162,698 Short-Term Obligation - 5.2% Par ($) - ------------------------------------- -------------------------------------------------- ---------- ----------- Repurchase agreement with State Street Bank & Trust Co., dated 11/30/05, due 12/01/05 at 3.850%, collateralized by a U.S. Treasury Bond maturing 12/22/05, market value of $25,151,963 (repurchase proceeds $24,656,637) 24,654,000 24,654,000 Total Short-Term Obligation (cost of $24,654,000) 24,654,000 Total Investments - 95.6% (cost of $477,503,627) (i) 457,121,439 Other Assets & Liabilities, Net - 4.4% 20,945,631 Net Assets - 100.0% 478,067,070 See Accompanying Notes to Financial Statements. 29 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund NOTES TO INVESTMENT PORTFOLIO: (a)Step bond. This security is currently not paying coupon. Shown parenthetically is the next interest rate to be paid and the date the Fund will begin accruing at this rate. (b)Security exempt from registration pursuant to Rule 144A under the Securities Act of 1933. These securities may be resold in transactions exempt from registration, normally to qualified institutional buyers. At November 30, 2005, these securities, which did not include any illiquid securities except for the following, amounted to $87,792,911, which represents 18.4% of net assets. Acquisition Security Date Par/Units Cost Value ------------------------------------------------------------- Hollinger, Inc. 11.875% 03/01/11 09/30/04 $1,009,000 $1,009,000 $1,009,000 12.875% 03/01/11 03/05/03 1,474,000 1,464,817 1,555,070 QDI LLC 05/28/02 10,207 -- 32,458 ---------- $2,596,528 ---------- (c)The interest rate shown on floating rate or variable rate securities reflects the rate at November 30, 2005. (d)The issuer has filed for bankruptcy protection under Chapter 11, and is in default of certain debt covenants. Income is not being accrued. At November 30, 2005, the value of these securities amounted to $1,254,250, which represents 0.3% of net assets. (e)Represents fair value as determined in good faith under procedures approved by the Board of Trustees. (f)Step bond. Shown parenthetically is the next interest rate to be paid and the date the Fund will begin accruing at this rate. (g)Non-income producing. (h)Security has no value. (i)Cost for federal income tax purposes is $478,228,992. At November 30, 2005, the Fund had entered into the following forward currency exchange contracts: Forward Currency Aggregate Settlement Unrealized Contracts to Sell Value Face Value Date Depreciation --------------------------------------------------------------- EUR $3,813,182 $3,802,178 01/23/2006 $(11,004) EUR 871,731 865,135 01/30/2006 (6,596) -------- $(17,600) -------- ACRONYM NAME ------------------------------------ EUR Euro PIK Payment-In-Kind REIT Real Estate Investment Trust At November 30, 2005, the asset allocation of the Fund is as follows: ASSET ALLOCATION % OF NET ASSETS ---------------------------------------------------- Corporate Fixed-Income Bonds & Notes 84.7% Preferred Stocks 2.7 Common Stocks 1.5 Convertible Bonds 0.8 Municipal Bond (Taxable) 0.7 Warrants 0.0* Short-Term Obligation 5.2 Other Assets & Liabilities, Net 4.4 ----- 100.0% ----- *Rounds to less than 0.1%. See Accompanying Notes to Financial Statements. 30 STATEMENT OF ASSETS AND LIABILITIES ------------------------------------ November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund ($) - ------------------------- ----------------------------------------------------------------- ------------ Assets Investments, at cost 477,503,627 ------------ Investments, at value 457,121,439 Cash 337,167 Receivable for: Investments sold 4,582,589 Fund shares sold 13,469,651 Interest 8,914,757 Dividends 77,244 Deferred Trustees' compensation plan 48,773 ------------ Total Assets 484,551,620 ----------------------------------------------------------------- ------------ Liabilities Net unrealized depreciation on foreign forward currency contracts 17,600 Payable for: Investments purchased 2,836,408 Fund shares repurchased 1,043,228 Distributions 1,609,194 Investment advisory fee 233,870 Transfer agent fee 119,045 Pricing and bookkeeping fees 17,950 Trustees' fees 1,345 Custody fee 8,734 Distribution and service fees 216,716 Chief compliance officer expenses 1,914 Deferred Trustees' fees 48,773 Other liabilities 329,773 ------------ Total Liabilities 6,484,550 Net Assets 478,067,070 ----------------------------------------------------------------- ------------ Composition of Net Assets Paid-in capital 894,552,431 Overdistributed net investment income (1,072,486) Accumulated net realized loss (395,242,632) Net unrealized appreciation (depreciation) on: Investments (20,382,188) Foreign currency translations 211,945 ------------ Net Assets 478,067,070 ----------------------------------------------------------------- ------------ Class A Net assets 272,726,481 Shares outstanding 60,347,954 Net asset value per share 4.52(a) Maximum offering price per share ($4.52/0.9525) 4.75(b) ----------------------------------------------------------------- ------------ Class B Net assets 166,479,201 Shares outstanding 36,837,319 Net asset value and offering price per share 4.52(a) ----------------------------------------------------------------- ------------ Class C Net assets 26,129,621 Shares outstanding 5,781,920 Net asset value and offering price per share 4.52(a) ----------------------------------------------------------------- ------------ Class Z Net assets 12,731,767 Shares outstanding 2,817,172 Net asset value, offering and redemption price per share 4.52 (a)Redemption price per share is equal to net asset value less any applicable contingent deferred sales charge. (b)On sales of $50,000 or more the offering price is reduced. See Accompanying Notes to Financial Statements. 31 STATEMENT OF OPERATIONS ------------------------------------ For the Six Months Ended November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund ($) - --------------------------------------- -------------------------------------------------------------- ---------- Investment Income Dividends 329,838 Interest 20,954,403 ---------- Total Investment Income 21,284,241 -------------------------------------------------------------- ---------- Expenses Investment advisory fee 1,485,858 Distribution fee: Class B 685,573 Class C 110,405 Service fee: Class A 338,438 Class B 228,524 Class C 36,851 Transfer agent fee 566,263 Pricing and bookkeeping fees 87,111 Trustees' fees 11,628 Custody fee 23,422 Chief compliance officer expenses (See Note 4) 4,312 Non-recurring costs (See Note 7) 3,454 Other expenses 134,364 ---------- Total Expenses 3,716,203 Fees waived by Distributor - Class C (21,963) Fees waived by Transfer Agent (76,688) Non-recurring costs assumed by Investment Advisor (See Note 7) (3,454) Custody earnings credit (12,163) ---------- Net Expenses 3,601,935 ---------- Net Investment Income 17,682,306 -------------------------------------------------------------- ---------- Net Realized and Unrealized Gain (Loss) Net realized gain (loss) on: on Investments and Foreign Currency Investments (7,497,261) Foreign currency transactions 427,842 ---------- Net realized loss (7,069,419) Net change in unrealized appreciation (depreciation) on: Investments 5,576,215 Foreign currency translations (423,202) ---------- Net change in unrealized appreciation (depreciation) 5,153,013 ---------- Net Loss (1,916,406) ---------- Net Increase in Net Assets from Operations 15,765,900 See Accompanying Notes to Financial Statements. 32 STATEMENT OF CHANGES IN NET ASSETS ------------------------------------ Columbia High Yield Opportunity Fund (unaudited) Six Months Year Ended Ended November 30, May 31, Increase (Decrease) in Net Assets 2005 ($) 2005 ($) - -------------------------------------- ---------------------------------------------------- ------------ ------------ Operations Net investment income 17,682,306 42,938,667 Net realized gain (loss) on investments and foreign currency transactions (7,069,419) 16,486,865 Net change in unrealized appreciation (depreciation) on investments and foreign currency translations 5,153,013 (6,978,243) ------------ ------------ Net Increase from Operations 15,765,900 52,447,289 ---------------------------------------------------- ------------ ------------ Distributions Declared to Shareholders From net investment income: Class A (11,207,674) (24,843,221) Class B (6,873,934) (17,229,500) Class C (1,129,748) (3,195,340) Class Z (537,695) (1,286,008) ------------ ------------ Total Distributions Declared to Shareholders (19,749,051) (46,554,069) ---------------------------------------------------- ------------ ------------ Share Transactions Class A: Subscriptions 27,894,175 51,631,025 Distributions reinvested 5,777,210 12,970,332 Redemptions (31,715,648) (119,788,196) ------------ ------------ Net Increase (Decrease) 1,955,737 (55,186,839) Class B: Subscriptions 3,905,652 15,033,791 Distributions reinvested 3,398,250 8,549,272 Redemptions (33,994,497) (84,300,266) ------------ ------------ Net Decrease (26,690,595) (60,717,203) Class C: Subscriptions 1,155,715 2,313,673 Distributions reinvested 635,011 2,060,574 Redemptions (5,775,145) (20,777,439) ------------ ------------ Net Decrease (3,984,419) (16,403,192) Class Z: Subscriptions 1,549,792 8,036,535 Distributions reinvested 388,909 964,387 Redemptions (1,928,264) (10,416,599) ------------ ------------ Net Increase (Decrease) 10,437 (1,415,677) Net Decrease from Share Transactions (28,708,840) (133,722,911) ------------ ------------ Total Decrease in Net Assets (32,691,991) (127,829,691) ---------------------------------------------------- ------------ ------------ Net Assets Beginning of period 510,759,061 638,588,752 End of period 478,067,070 510,759,061 Undistributed (overdistributed) net investment income at end of period (1,072,486) 994,259 See Accompanying Notes to Financial Statements. 33 - -------------------------------------------------------------------------------- Columbia High Yield Opportunity Fund (unaudited) Six Months Year Ended Ended November 30, May 31, 2005 2005 - ----------------- ------------------------------------- ------------ ----------- Changes in Shares Class A: Subscriptions 6,118,726 11,017,719 Issued for distributions reinvested 1,256,943 2,760,651 Redemptions (6,899,205) (25,637,277) ------------ ----------- Net Increase (Decrease) 476,464 (11,858,907) Class B: Subscriptions 854,019 3,195,705 Issued for distributions reinvested 739,070 1,819,533 Redemptions (7,386,271) (17,983,556) ------------ ----------- Net Decrease (5,793,182) (12,968,318) Class C: Subscriptions 249,756 492,732 Issued for distributions reinvested 138,092 438,421 Redemptions (1,262,746) (4,477,212) ------------ ----------- Net Decrease (874,898) (3,546,059) Class Z: Subscriptions 339,850 1,698,113 Issued for distributions reinvested 84,609 204,777 Redemptions (419,739) (2,216,660) ------------ ----------- Net Increase (Decrease) 4,720 (313,770) See Accompanying Notes to Financial Statements. 34 NOTES TO FINANCIAL STATEMENTS ------------------------------------ November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Note 1. Organization Columbia High Yield Opportunity Fund (the "Fund"), a series of Columbia Funds Trust I (the "Trust"), is a diversified portfolio. The Trust is a Massachusetts business trust registered under the Investment Company Act of 1940, as amended, as an open-end management investment company. Investment Goal The Fund seeks high current income and total return. Fund Shares The Fund may issue an unlimited number of shares and offers four classes of shares: Class A, Class B, Class C and Class Z. Each share class has its own sales charge and expense structure. Class A shares are subject to a maximum front-end sales charge of 4.75% based on the amount of initial investment. Class A shares purchased without an initial sales charge are subject to a 1.00% contingent deferred sales charge ("CDSC") on shares sold within twelve months on an original purchase of $1 million to $50 million. Class B shares are subject to a maximum CDSC of 5.00% based upon the holding period after purchase. Class B shares will convert to Class A shares in a certain number of years after purchase, depending on the program under which shares were purchased. Class C shares are subject to a 1.00% CDSC on shares sold within one year after purchase. Class Z shares are offered continuously at net asset value. There are certain restrictions on the purchase of Class Z shares, as described in the Fund's prospectus. Note 2. Significant Accounting Policies Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("GAAP") requires management to 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 revenue and expenses during the reporting period. Actual results could differ from those estimates. The following is a summary of significant accounting policies consistently followed by the Fund in the preparation of its financial statements. Security Valuation Debt securities generally are valued by pricing services approved by the Fund's Board of Trustees, based upon market transactions for normal, institutional-size trading units of similar securities. The services may use various pricing techniques which take into account appropriate factors such as yield, quality, coupon rate, maturity, type of issue, trading characteristics and other data, as well as broker quotes. Debt securities for which quotations are readily available are valued at an over-the-counter or exchange bid quotation. Certain debt securities, which tend to be more thinly traded and of lesser quality, are priced based on fundamental analysis of the financial condition of the issuer and the estimated value of any collateral. Valuations developed through pricing techniques may vary from the actual amounts realized upon sale of the securities, and the potential variation may be greater for those securities valued using fundamental analysis. Equity securities are valued at the last sale price on the principal exchange on which they trade, except for securities traded on the NASDAQ, which are valued at the NASDAQ official close price. Unlisted securities or listed securities for which there were no sales during the day are valued at the closing bid price on such exchanges or over-the-counter markets. Short-term debt obligations maturing within 60 days are valued at amortized cost, which approximates market value. Forward currency exchange contracts are valued at the prevailing forward exchange rate of the underlying currencies. Foreign securities are generally valued at the last sale price on the foreign exchange or market on which they trade. If any foreign share prices are not readily available as a result of limited share activity, the securities are valued at the last sale price of the local shares in the principal market in which such securities are normally traded. Generally, trading in foreign securities is substantially completed each day at various times prior to the close of the New York Stock Exchange ("NYSE"). The values of such securities used in computing the net asset value of the Fund's shares are determined as of such times. Foreign currency exchange rates are generally determined at 4:00 p.m. Eastern (U.S.) time. Events affecting the values of such foreign securities and such exchange rates may occur between the times at which 35 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund they are determined and the close of the customary trading session of the NYSE, which would not be reflected in the computation of the Fund's net asset value. If events materially affecting the values of such foreign securities occur and it is determined that market quotations are not reliable, then these foreign securities will be valued at their fair value using procedures approved by the Board of Trustees. If a security is valued at "fair value", such value is likely to be different from the last quoted market price for the security. Investments for which market quotations are not readily available, or have quotations which management believes are not appropriate, are valued at fair value as determined in good faith under consistently applied procedures established by and under the general supervision of the Board of Trustees. Security Transactions Security transactions are accounted for on the trade date. Cost is determined and gains (losses) are based upon the specific identification method for both financial statement and federal income tax purposes. Forward Foreign Currency Exchange Contracts Forward foreign currency exchange contracts are agreements to exchange one currency for another at a future date at a specified price. These contracts are used to minimize the exposure to foreign exchange rate fluctuations during the period between trade and settlement date of the contracts. The Fund may utilize forward foreign currency exchange contracts in connection with the settlement of purchases and sales of securities. The Fund may also enter into these contracts to hedge certain other foreign currency denominated assets. Contracts to buy generally are used to acquire exposure to foreign currencies, while contracts to sell are used to hedge the Fund's investments against currency fluctuations. Forward currency contracts are valued daily at the current exchange rate of the underlying currency, resulting in unrealized gains (losses) which become realized at the time the foreign currency contracts are closed or mature. Realized and unrealized gains (losses) arising from such transactions are included in net realized and unrealized gains (losses) on foreign currency transactions. The use of forward currency contracts does not eliminate fluctuations in the prices of the Fund's portfolio securities. While the maximum potential loss from such contracts is the aggregate face value in U.S. dollars at the time the contract was opened, exposure is typically limited to the change in value of the contract (in U.S. dollars) over the period it remains open. The Fund could also be exposed to risk if the counterparties of the contracts are unable to fulfill the terms of the contracts. Repurchase Agreements The Fund may engage in repurchase agreement transactions with institutions that the Fund's investment advisor has determined are creditworthy. The Fund, through its custodian, receives delivery of underlying securities collateralizing a repurchase agreement. Collateral is at least equal, at all times, to the value of the repurchase obligation including interest. A repurchase agreement transaction involves certain risks in the event of default or insolvency of the counterparty. These risks include possible delays or restrictions upon the Fund's ability to dispose of the underlying securities and a possible decline in the value of the underlying securities during the period while the Fund seeks to assert its rights. Income Recognition Interest income is recorded on the accrual basis. Premium and discount are amortized and accreted, respectively, on all debt securities. Corporate actions and dividend income are recorded on the ex-date. The value of additional securities received as an income payment is recorded as income and as the cost basis of such securities. Foreign Currency Transactions The values of all assets and liabilities quoted in foreign currencies are translated into U.S. dollars at that day's exchange rates. Net realized and unrealized gains (losses) on foreign currency transactions include gains (losses) arising from the fluctuation in exchange rates between trade and settlement dates on securities transactions, gains (losses) arising from the disposition of foreign currency and currency gains (losses) between the accrual and payment dates on dividends, interest income and foreign withholding taxes. For financial statement purposes, the Fund does not distinguish that portion of gains (losses) on investments which is due to changes in foreign exchange rates from that which is due to changes in 36 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund market prices of the investments. Such fluctuations are included with the net realized and unrealized gains (losses) on investments. Determination of Class Net Asset Values All income, expenses (other than class-specific expenses, as shown on the Statement of Operations) and realized and unrealized gains (losses) are allocated to each class of the Fund on a daily basis for purposes of determining the net asset value of each class. Income and expenses are allocated to each class based on the settled shares method, while realized and unrealized gains (losses) are allocated based on the relative net assets of each class. Federal Income Tax Status The Fund intends to qualify each year as a "regulated investment company" under Subchapter M of the Internal Revenue Code, as amended, and will distribute substantially all of its tax-exempt or taxable income, if any, for its tax year, and as such will not be subject to federal income taxes. In addition, the Fund intends to distribute in each calendar year substantially all of its net investment income, capital gains and certain other amounts, if any, such that the Fund should not be subject to federal excise tax. Therefore, no federal income or excise tax provision is recorded. Distributions to Shareholders Dividends from net investment income are declared daily and paid monthly. Net realized capital gains, if any, are distributed at least annually. Note 3. Federal Tax Information The tax character of distributions paid during the year ended May 31, 2005 was as follows: May 31, 2005 ------------------------------------- Distributions paid from: ------------------------------------- Ordinary Income* $46,554,069 ------------------------------------- Long-Term Capital Gains -- ------------------------------------- Unrealized appreciation and depreciation at November 30, 2005, based on cost of investments for federal income tax purposes, was: Unrealized appreciation $ 12,193,095 Unrealized depreciation (33,300,648) ------------ Net unrealized depreciation $(21,107,553) ------------------------------------------ The following capital loss carryforwards, determined as of May 31, 2005, may be available to reduce taxable income arising from future net realized gains on investments, if any, to the extent permitted by the Internal Revenue Code: Year of Capital Loss Expiration Carryforward ----------------------- 2008 $ 37,575,496 ----------------------- 2009 161,087,717 ----------------------- 2010 171,019,187 ----------------------- 2011 18,463,873 ------------ $388,146,273 ----------------------- Of the capital loss carryforwards attributable to the Fund $3,086,545 ($2,216,468 will expire May 31, 2008 and $870,077 will expire May 31, 2009) was obtained in the merger with Stein Roe High Yield Fund. Note 4. Fees and Compensation Paid to Affiliates Investment Advisory Fee Columbia Management Advisors, LLC ("Columbia"), an indirect wholly owned subsidiary of Bank of America Corporation ("BOA"), is the investment advisor to the Fund and provides administrative and other services to the Fund. Prior to September 30, 2005, Columbia Management Advisors, Inc. was the investment advisor to the Fund under the same fee structure. On September 30, 2005, Columbia Management Advisors, Inc. merged into Banc of America Capital Management, LLC. At that time, the investment advisor was then renamed Columbia Management Advisors, LLC. Columbia receives a monthly investment advisory fee based on the Fund's average daily net assets at the following annual rates: Average Daily Net Assets Annual Fee Rate ---------------------------------------------- First $500 million 0.60% ---------------------------------------------- $500 million to $1 billion 0.55% ---------------------------------------------- $1 billion to $1.5 billion 0.52% ---------------------------------------------- Over $1.5 billion 0.49% ---------------------------------------------- For the six months ended November 30, 2005, the Fund's annualized effective investment advisory fee rate was 0.60%. Pricing and Bookkeeping Fees Columbia is responsible for providing pricing and bookkeeping services to the Fund under a pricing and 37 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund bookkeeping agreement. Under a separate agreement (the "Outsourcing Agreement"), Columbia has delegated those functions to State Street Corporation ("State Street"). As a result, the total fees payable under the pricing and bookkeeping agreement are paid to State Street. Under its pricing and bookkeeping agreement with the Fund, Columbia receives an annual fee of $38,000 paid monthly plus an additional monthly fee based on the level of average daily net assets for the month; provided that during any 12-month period, the aggregate fee shall not exceed $140,000. Prior to November 1, 2005, Columbia received from the Fund an annual fee of $10,000 paid monthly, and in any month that the Fund's average daily net assets exceeded $50 million, an additional monthly fee, calculated by taking into account the fees payable to State Street under the Outsourcing Agreement. The Fund also reimburses Columbia and State Street for out-of pocket expenses and charges, including fees payable to third parties for pricing the Fund's portfolio securities and direct internal costs incurred by Columbia in connection with providing fund accounting oversight and monitoring and certain other services. For the six months ended November 30, 2005, the Fund's annualized effective pricing and bookkeeping rate, inclusive of out-of-pocket expenses, was 0.035%. Transfer Agent Fee Columbia Management Services, Inc. (formerly Columbia Funds Services, Inc.) (the "Transfer Agent"), an affiliate of Columbia and a wholly owned subsidiary of BOA, provides shareholder services to the Fund and has contracted with Boston Financial Data Services ("BFDS") to serve as sub-transfer agent. For such services, the Transfer Agent receives a fee, paid monthly, at the annual rate of $15.23 per open account plus sub-transfer agent fees (exclusive of BFDS fees) calculated based on assets held in omnibus accounts and intended to recover the cost of payments to third parties for services to those accounts. The Transfer Agent may also retain as additional compensation for its services revenues for fees for wire, telephone and redemption orders, IRA trustee agent fees and account transcript fees due the Transfer Agent from shareholders of the Fund and credits (net of bank charges) earned with respect to balances in accounts the Transfer Agent maintains in connection with its services to the Fund. The Transfer Agent also receives reimbursement for certain out-of-pocket expenses. Prior to November 1, 2005, the Transfer Agent received a fee, paid monthly at the annual rate of $34.00 per open account and was reimbursed for certain out-of-pocket expenses. For the period September 1, 2005 through October 31, 2005, the Transfer Agent voluntarily waived fees of $76,688 for the Fund. For the six months ended November 30, 2005, the Fund's annualized effective transfer agent fee rate, inclusive of out-of-pocket fees, was 0.20%. Underwriting Discounts, Service and Distribution Fees Columbia Management Distributors, Inc. (the "Distributor"), an affiliate of Columbia and a wholly owned subsidiary of BOA, is the principal underwriter of the Fund. On August 22, 2005, Columbia Funds Distributor, Inc. was renamed Columbia Management Distributors, Inc. For the six months ended November 30, 2005, the Distributor has retained net underwriting discounts of $14,029 on sales of the Fund's Class A shares and received net CDSC fees of $3, $189,079 and $1,128 on Class A, Class B and Class C share redemptions, respectively. The Fund has adopted a 12b-1 plan (the "Plan") which allows the payment of a monthly service fee to the Distributor equal to 0.25% annually of the average daily net assets attributable to Class A, Class B and Class C shares. The Plan also requires the payment of a monthly distribution fee to the Distributor equal to 0.75% annually of the average daily net assets attributable to Class B and Class C shares only. The Distributor has voluntarily agreed to waive a portion of the Class C share distribution fee so that it will not exceed 0.60% annually. The CDSC and the distribution fees received from the Plan are used principally as repayment to the Distributor for amounts paid by the Distributor to dealers who sold such shares. Custody Credits The Fund has an agreement with its custodian bank under which custody fees may be reduced by balance credits. These credits are recorded as a reduction of total expenses on the Statement of Operations. The Fund could have invested a portion of the assets utilized in connection with the expense offset arrangement in an income-producing asset if it had not entered into such an agreement. 38 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Fees Paid to Officers and Trustees All officers of the Fund, with the exception of the Fund's Chief Compliance Officer, are employees of Columbia or its affiliates and receive no compensation from the Fund. The Board of Trustees has appointed a Chief Compliance Officer to the Fund in accordance with federal securities regulations. The Fund, along with other affiliated funds, pays its pro-rata share of the expenses associated with the Chief Compliance Officer. The Fund's expenses for the Chief Compliance Officer will not exceed $15,000 per year. The Fund's Trustees may participate in a deferred compensation plan which may be terminated at any time. Obligations of the plan will be paid solely out of the Fund's assets. Other Columbia provides certain services to the Fund related to Sarbanes-Oxley compliance. For the six months ended November 30, 2005, the Fund paid $1,053 to Columbia for such services. This amount is included in "Other expenses" on the Statement of Operations. Note 5. Portfolio Information For the six months ended November 30, 2005, the cost of purchases and proceeds from sales of securities, excluding short-term obligations, were $161,598,172 and $212,734,963, respectively. Note 6. Line of Credit The Fund and other affiliated funds participate in a $350,000,000 committed unsecured revolving line of credit provided by State Street Bank and Trust Company. Borrowings are used for temporary or emergency purposes to facilitate portfolio liquidity. Interest is charged to each participating fund based on its borrowings at a rate per annum equal to the Federal Funds rate plus 0.50%. In addition, a commitment fee of 0.10% per annum is accrued and apportioned among the participating funds based on their pro-rata portion of the unutilized line of credit. The commitment fee is included in "Other expenses" on the Statement of Operations. For the six months ended November 30, 2005, the Fund did not borrow under this arrangement. Note 7. Disclosure of Significant Risks and Contingencies Industry Focus The Fund may focus its investments in certain industries, subjecting it to greater risk than a fund that is more diversified. High-Yield Securities Investing in high-yield securities may involve greater credit risk and considerations not typically associated with investing in U.S. government bonds and other higher quality fixed income securities. These securities are non-investment grade securities, often referred to as "junk" bonds. Economic downturns may disrupt the high yield market and impair the ability of issuers to repay principal and interest. Also, an increase in interest rates would likely have an adverse impact on the value of such obligations. Moreover, high-yield securities may be less liquid to the extent that there is no established secondary market. Foreign Securities There are certain additional risks involved when investing in foreign securities that are not inherent with investments in domestic securities. These risks may involve foreign currency exchange rate fluctuations, adverse political and economic developments and the possible prevention of currency exchange or other foreign governmental laws or restrictions. In addition, the liquidity of foreign securities may be more limited than that of domestic securities. Investments in emerging market countries are subject to additional risk. The risk of foreign investments is typically increased in less developed countries. These countries are also more likely to experience high levels of inflation, deflation or currency devaluation which could hurt their economies and securities markets. Legal Proceedings On February 9, 2005, Columbia Management Advisors, Inc. (which has since merged into Banc of America Capital Management, LLC (now named Columbia Management Advisors, LLC)) ("Columbia") and Columbia Funds Distributor, Inc. (which has been renamed Columbia Management Distributors, Inc.) (the "Distributor") (collectively, the "Columbia Group") 39 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund entered into an Assurance of Discontinuance with the New York Attorney General ("NYAG") (the "NYAG Settlement") and consented to the entry of a cease-and-desist order by the Securities and Exchange Commission ("SEC") (the "SEC Order"). The SEC Order and the NYAG Settlement are referred to collectively as the "Settlements". The Settlements contain substantially the same terms and conditions as outlined in the agreements in principle which Columbia Group entered into with the SEC and NYAG in March 2004. Under the terms of the SEC Order, the Columbia Group has agreed among other things, to: pay $70 million in disgorgement and $70 million in civil money penalties; cease and desist from violations of the antifraud provisions and certain other provisions of the federal securities laws; maintain certain compliance and ethics oversight structures; retain an independent consultant to review the Columbia Group's applicable supervisory, compliance, control and other policies and procedures; and retain an independent distribution consultant (see below). The Columbia Funds have also voluntarily undertaken to implement certain governance measures designed to maintain the independence of their boards of trustees. The NYAG Settlement also, among other things, requires Columbia and its affiliates to reduce certain Columbia Funds (including the former Nations Funds) and other mutual funds management fees collectively by $32 million per year for five years, for a projected total of $160 million in management fee reductions. Pursuant to the procedures set forth in the SEC order, the $140 million in settlement amounts described above will be distributed in accordance with a distribution plan to be developed by an independent distribution consultant, who is acceptable to the SEC staff and the Columbia Funds' independent trustees. The distribution plan must be based on a methodology developed in consultation with the Columbia Group and the funds' independent trustees and not unacceptable to the staff of the SEC. At this time, the distribution plan is still under development. As such, any gain to the funds or their shareholders cannot currently be determined. As a result of these matters or any adverse publicity or other developments resulting from them, there may be increased redemptions or reduced sales of fund shares, which could increase transaction costs or operating expenses, or have other adverse consequences for the funds. A copy of the SEC Order is available on the SEC website at http://www.sec.gov. A copy of the NYAG Settlement is available as part of the Bank of America Corporation Form 8-K filing on February 10, 2005. In connection with the events described in detail above, various parties have filed suit against certain funds, the Trustees of the Columbia Funds, FleetBoston Financial Corporation and its affiliated entities and/or Bank of America and its affiliated entities. More than 300 cases including those filed against entities unaffiliated with the funds, their Boards, FleetBoston Financial Corporation and its affiliated entities and/or Bank of America and its affiliated entities have been transferred to the Federal District Court in Maryland and consolidated in a multi-district proceeding (the "MDL"). The derivative cases purportedly brought on behalf of the Columbia Funds in the MDL have been consolidated under the lead case. The fund derivative plaintiffs allege that the funds were harmed by market timing and late trading activity and seek, among other things, the removal of the trustees of the Columbia Funds, removal of the Columbia Group, disgorgement of all management fees and monetary damages. On March 21, 2005, purported class action plaintiffs filed suit in Massachusetts state court alleging that the conduct, including market timing, entitles Class B shareholders in certain Columbia Funds to an exemption from contingent deferred sales charges upon early redemption ("the CDSC Lawsuit"). The CDSC Lawsuit has been removed to federal court in Massachusetts and the federal Judicial Panel has transferred the CDSC Lawsuit to the MDL. The MDL is ongoing. Accordingly, an estimate of the financial impact of this litigation on any fund, if any, cannot currently be made. In 2004, certain Columbia Funds, the Trustees of the Columbia Funds, advisers and affiliated entities were named as defendants in certain purported shareholder class and derivative actions making claims, including claims under the Investment Company and the Investment Advisers Acts of 1940 and state law. The suits allege, inter alia, that the fees and expenses paid by the funds are excessive and that the advisers and their affiliates inappropriately used fund assets to distribute the funds and for other improper purposes. On March 2, 2005, the actions were consolidated in the Massachusetts federal court as In re Columbia Entities Litigation. The plaintiffs filed a consolidated amended 40 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund complaint on June 9, 2005. On November 30, 2005, the judge dismissed all claims by plaintiffs and ordered that the case be closed. The plaintiffs filed a notice of appeal on December 30, 2005. For the six months ended November 30, 2005, Columbia has assumed $3,454 of legal, consulting services and Trustees' fees incurred by the Fund in connection with these matters. 41 FINANCIAL HIGHLIGHTS ------------------------------------ Columbia High Yield Opportunity Fund Selected data for a share outstanding throughout each period is as follows: (Unaudited) Six Months Period Ended Ended November 30, Year Ended May 31, May 31, Class A Shares 2005 2005 2004 2003(a) - ------------------------------------------------------------------------------------------------------- Net Asset Value, Beginning of Period $ 4.56 $ 4.54 $ 4.30 $ 4.01 - ------------------------------------------------------------------------------------------------------- Income from Investment Operations: Net investment income 0.17(b) 0.35(b) 0.35(b) 0.14(b) Net realized and unrealized gain (loss) on investments and foreign currency (0.02) 0.05 0.21 0.30 -------- -------- -------- -------- Total from Investment Operations 0.15 0.40 0.56 0.44 - ------------------------------------------------------------------------------------------------------- Less Distributions Declared to Shareholders: From net investment income (0.19) (0.38) (0.32) (0.15) Return of capital -- -- -- -- -------- -------- -------- -------- Total Distributions Declared to Shareholders (0.19) (0.38) (0.32) (0.15) - ------------------------------------------------------------------------------------------------------- Net Asset Value, End of Period $ 4.52 $ 4.56 $ 4.54 $ 4.30 Total return (e) 3.32%(f)(g) 8.93%(h) 13.30%(g) 11.01%(f)(g) - ------------------------------------------------------------------------------------------------------- Ratios to Average Net Assets/ Supplemental Data: Expenses (i) 1.15%(j) 1.15% 1.19% 1.29%(j) Net investment income (i) 7.44%(j) 7.55% 7.65% 8.24%(j) Waiver/reimbursement 0.03%(j) -- 0.01% --%(j)(k) Portfolio turnover rate 34%(f) 67% 75% 45%(f) Net assets, end of period (000's) $272,726 $273,104 $325,658 $376,944 - ------------------------------------------------------------------------------------------------------- (Unaudited) Six Months Ended November 30, Year Ended December 31, Class A Shares 2002 2001 2000 - ------------------------------------------------------------------------------- Net Asset Value, Beginning of Period $ 4.62 $ 5.30 $ 6.55 - ------------------------------------------------------------------------------- Income from Investment Operations: Net investment income 0.34(b) 0.52(b)(c) 0.61(d) Net realized and unrealized gain (loss) on investments and foreign currency (0.53) (0.65)(c) (1.24) -------- -------- -------- Total from Investment Operations (0.19) (0.13) (0.63) - ------------------------------------------------------------------------------- Less Distributions Declared to Shareholders: From net investment income (0.39) (0.51) (0.62) Return of capital (0.03) (0.04) -- -------- -------- -------- Total Distributions Declared to Shareholders (0.42) (0.55) (0.62) - ------------------------------------------------------------------------------- Net Asset Value, End of Period $ 4.01 $ 4.62 $ 5.30 Total return (e) (4.27)% (2.78)% (10.28)% - ------------------------------------------------------------------------------- Ratios to Average Net Assets/ Supplemental Data: Expenses (i) 1.31% 1.22% 1.16% Net investment income (i) 7.92% 10.34%(c) 10.00% Waiver/reimbursement -- -- -- Portfolio turnover rate 63% 62% 28% Net assets, end of period (000's) $361,780 $369,043 $390,917 - ------------------------------------------------------------------------------- (a)The Fund changed its fiscal year end from December 31 to May 31. (b)Per share data was calculated using average shares outstanding during the period. (c)Effective January 1, 2001, the Fund adopted the provisions of the AICPA Audit and Accounting Guide for Investment Companies and began amortizing premium and accreting discount on all debt securities. The effect of this change for the year ended December 31, 2001 was to increase net investment income per share by $0.05, decrease net realized and unrealized loss per share by $0.05 and increase the ratio of net investment income to average net assets from 9.76% to 10.34%. Per share data and ratios for periods prior to December 31, 2001 have not been restated to reflect this change in presentation. (d)The per share net investment income amount does not reflect the period's reclassification of differences between book and tax basis net investment income. (e)Total return at net asset value assuming all distributions reinvested and no initial sales charge or contingent deferred sales charge. (f)Not annualized. (g)Had the Investment Advisor and/or Transfer Agent not waived a portion of expenses, total return would have been reduced. (h)Total return includes a voluntary reimbursement by the Investment Advisor for a realized investment loss. This reimbursement had an impact of less than 0.01% on the Fund's total return. (i)The benefits derived from custody credits had an impact of less than 0.01%. (j)Annualized. (k)Rounds to less than 0.01%. 42 - -------------------------------------------------------------------------------- Columbia High Yield Opportunity Fund Selected data for a share outstanding throughout each period is as follows: (Unaudited) Six Months Period Ended Ended November 30, Year Ended May 31, May 31, Class B Shares 2005 2005 2004 2003(a) - --------------------------------------------------------------------------------------------------------------- Net Asset Value, Beginning of Period $ 4.56 $ 4.54 $ 4.30 $ 4.01 - --------------------------------------------------------------------------------------------------------------- Income from Investment Operations: Net investment income 0.16(b) 0.32(b) 0.31(b) 0.13(b) Net realized and unrealized gain (loss) on investments and foreign currency (0.03) 0.05 0.22 0.29 -------- -------- -------- -------- Total from Investment Operations 0.13 0.37 0.53 0.42 - --------------------------------------------------------------------------------------------------------------- Less Distributions Declared to Shareholders: From net investment income (0.17) (0.35) (0.29) (0.13) Return of capital -- -- -- -- -------- -------- -------- -------- Total Distributions Declared to Shareholders (0.17) (0.35) (0.29) (0.13) - --------------------------------------------------------------------------------------------------------------- Net Asset Value, End of Period $ 4.52 $ 4.56 $ 4.54 $ 4.30 Total return (e) 2.94%(f)(g) 8.13%(h) 12.46%(g) 10.67%(f)(g) - --------------------------------------------------------------------------------------------------------------- Ratios to Average Net Assets/ Supplemental Data: Expenses (i) 1.90%(j) 1.90% 1.94% 2.04%(j) Net investment income (i) 6.69%(j) 6.80% 6.90% 7.49%(j) Waiver/reimbursement 0.03%(j) -- 0.01% --%(j)(k) Portfolio turnover rate 34%(f) 67% 75% 45%(f) Net assets, end of period (000's) $166,479 $194,460 $252,415 $305,021 - --------------------------------------------------------------------------------------------------------------- (Unaudited) Six Months Ended November 30, Year Ended December 31, Class B Shares 2002 2001 2000 - --------------------------------------------------------------------------------------- Net Asset Value, Beginning of Period $ 4.62 $ 5.30 $ 6.55 - --------------------------------------------------------------------------------------- Income from Investment Operations: Net investment income 0.31(b) 0.48(b)(c) 0.56(d) Net realized and unrealized gain (loss) on investments and foreign currency (0.54) (0.65)(c) (1.24) -------- -------- -------- Total from Investment Operations (0.23) (0.17) (0.68) - --------------------------------------------------------------------------------------- Less Distributions Declared to Shareholders: From net investment income (0.35) (0.47) (0.57) Return of capital (0.03) (0.04) -- -------- -------- -------- Total Distributions Declared to Shareholders (0.38) (0.51) (0.57) - --------------------------------------------------------------------------------------- Net Asset Value, End of Period $ 4.01 $ 4.62 $ 5.30 Total return (e) (4.99)% (3.51)% (10.96)% - --------------------------------------------------------------------------------------- Ratios to Average Net Assets/ Supplemental Data: Expenses (i) 2.06% 1.97% 1.91% Net investment income (i) 7.17% 9.59%(c) 9.25% Waiver/reimbursement -- -- -- Portfolio turnover rate 63% 62% 28% Net assets, end of period (000's) $280,220 $350,464 $433,949 - --------------------------------------------------------------------------------------- (a)The Fund changed its fiscal year end from December 31 to May 31. (b)Per share data was calculated using average shares outstanding during the period. (c)Effective January 1, 2001, the Fund adopted the provisions of the AICPA Audit and Accounting Guide for Investment Companies and began amortizing premium and accreting discount on all debt securities. The effect of this change for the year ended December 31, 2001 was to increase net investment income per share by $0.05, decrease net realized and unrealized loss per share by $0.05 and increase the ratio of net investment income to average net assets from 9.02% to 9.59%. Per share data and ratios for periods prior to December 31, 2001 have not been restated to reflect this change in presentation. (d)The per share net investment income amount does not reflect the period's reclassification of differences between book and tax basis net investment income. (e)Total return at net asset value assuming all distributions reinvested and no contingent deferred sales charge. (f)Not annualized. (g)Had the Investment Advisor and/or Transfer Agent not waived a portion of expenses, total return would have been reduced. (h)Total return includes a voluntary reimbursement by the Investment Advisor for a realized investment loss. This reimbursement had an impact of less than 0.01% on the Fund's total return. (i)The benefits derived from custody credits had an impact of less than 0.01%. (j)Annualized. (k)Rounds to less than 0.01%. 43 - -------------------------------------------------------------------------------- Columbia High Yield Opportunity Fund Selected data for a share outstanding throughout each period is as follows: (Unaudited) Six Months Period Ended Ended November 30, Year Ended May 31, May 31, Class C Shares 2005 2005 2004 2003(a) - ---------------------------------------------------------------------------------------------------- Net Asset Value, Beginning of Period $ 4.56 $ 4.54 $ 4.30 $ 4.01 - ---------------------------------------------------------------------------------------------------- Income from Investment Operations: Net investment income 0.16(b) 0.33(b) 0.32(b) 0.13(b) Net realized and unrealized gain (loss) on investments and foreign currency (0.02) 0.04 0.21 0.29 ------- ------- ------- ------- Total from Investment Operations 0.14 0.37 0.53 0.42 - ---------------------------------------------------------------------------------------------------- Less Distributions Declared to Shareholders: From net investment income (0.18) (0.35) (0.29) (0.13) Return of capital -- -- -- -- ------- ------- ------- ------- Total Distributions Declared to Shareholders (0.18) (0.35) (0.29) (0.13) - ---------------------------------------------------------------------------------------------------- Net Asset Value, End of Period $ 4.52 $ 4.56 $ 4.54 $ 4.30 Total return (e)(f) 3.01%(g) 8.29%(h) 12.63% 10.74%(g) - ---------------------------------------------------------------------------------------------------- Ratios to Average Net Assets/ Supplemental Data: Expenses (i) 1.75%(j) 1.75% 1.79% 1.89%(j) Net investment income (i) 6.84%(j) 6.95% 7.05% 7.64%(j) Waiver/reimbursement 0.18%(j) 0.15% 0.16% 0.15%(j) Portfolio turnover rate 34%(g) 67% 75% 45%(g) Net assets, end of period (000's) $26,130 $30,366 $46,322 $51,471 - ---------------------------------------------------------------------------------------------------- (Unaudited) Six Months Ended November 30, Year Ended December 31, Class C Shares 2002 2001 2000 - ------------------------------------------------------------------------------------ Net Asset Value, Beginning of Period $ 4.62 $ 5.30 $ 6.55 - ------------------------------------------------------------------------------------ Income from Investment Operations: Net investment income 0.31(b) 0.49(b)(c) 0.57(d) Net realized and unrealized gain (loss) on investments and foreign currency (0.53) (0.65)(c) (1.24) ------- ------- ------- Total from Investment Operations (0.22) (0.16) (0.67) - ------------------------------------------------------------------------------------ Less Distributions Declared to Shareholders: From net investment income (0.36) (0.48) (0.58) Return of capital (0.03) (0.04) -- ------- ------- ------- Total Distributions Declared to Shareholders (0.39) (0.52) (0.58) - ------------------------------------------------------------------------------------ Net Asset Value, End of Period $ 4.01 $ 4.62 $ 5.30 Total return (e)(f) (4.85)% (3.37)% (10.78)% - ------------------------------------------------------------------------------------ Ratios to Average Net Assets/ Supplemental Data: Expenses (i) 1.91% 1.82% 1.76% Net investment income (i) 7.32% 9.74%(c) 9.40% Waiver/reimbursement 0.15% 0.15% 0.15% Portfolio turnover rate 63% 62% 28% Net assets, end of period (000's) $46,568 $52,122 $48,904 - ------------------------------------------------------------------------------------ (a)The Fund changed its fiscal year end from December 31 to May 31. (b)Per share data was calculated using average shares outstanding during the period. (c)Effective January 1, 2001, the Fund adopted the provisions of the AICPA Audit and Accounting Guide for Investment Companies and began amortizing premium and accreting discount on all debt securities. The effect of this change for the year ended December 31, 2001 was to increase net investment income per share by $0.05, decrease net realized and unrealized loss per share by $0.05 and increase the ratio of net investment income to average net assets from 9.16% to 9.74%. Per share data and ratios for periods prior to December 31, 2001 have not been restated to reflect this change in presentation. (d)The per share net investment income amount does not reflect the period's reclassification of differences between book and tax basis net investment income. (e)Total return at net asset value assuming all distributions reinvested and no contingent deferred sales charge. (f)Had the Investment Advisor, Transfer Agent and/or Distributor not waived a portion of expenses, total return would have been reduced. (g)Not annualized. (h)Total return includes a voluntary reimbursement by the Investment Advisor for a realized investment loss. This reimbursement had an impact of less than 0.01% on the Fund's total return. (i)The benefits derived from custody credits had an impact of less than 0.01%. (j)Annualized. 44 - -------------------------------------------------------------------------------- Columbia High Yield Opportunity Fund Selected data for a share outstanding throughout each period is as follows: (Unaudited) Six Months Period Ended Ended November 30, Year Ended May 31, May 31, Class Z Shares 2005 2005 2004 2003(a) - ----------------------------------------------------------------------------------------------------------- Net Asset Value, Beginning of Period $ 4.56 $ 4.54 $ 4.30 $ 4.01 - ----------------------------------------------------------------------------------------------------------- Income from Investment Operations: Net investment income 0.18(b) 0.37(b) 0.36(b) 0.15(b) Net realized and unrealized gain (loss) on investments and foreign currency (0.02) 0.04 0.21 0.29 ------- ------- ------- ------- Total from Investment Operations 0.16 0.41 0.57 0.44 - ----------------------------------------------------------------------------------------------------------- Less Distributions Declared to Shareholders: From net investment income (0.20) (0.39) (0.33) (0.15) Return of capital -- -- -- -- ------- ------- ------- ------- Total Distributions Declared to Shareholders (0.20) (0.39) (0.33) (0.15) - ----------------------------------------------------------------------------------------------------------- Net Asset Value, End of Period $ 4.52 $ 4.56 $ 4.54 $ 4.30 Total return (e) 3.45%(f)(g) 9.21%(h) 13.58%(g) 11.12%(f)(g) - ----------------------------------------------------------------------------------------------------------- Ratios to Average Net Assets/ Supplemental Data: Expenses (i) 0.90%(j) 0.90% 0.94% 1.04%(j) Net investment income (i) 7.68%(j) 7.80% 7.92% 8.49%(j) Waiver/reimbursement 0.03%(j) -- 0.01% --%(j)(k) Portfolio turnover rate 34%(f) 67% 75% 45%(f) Net assets, end of period (000's) $12,732 $12,829 $14,194 $45,803 - ----------------------------------------------------------------------------------------------------------- (Unaudited) Six Months Ended November 30, Year Ended December 31, Class Z Shares 2002 2001 2000 - ----------------------------------------------------------------------------------- Net Asset Value, Beginning of Period $ 4.62 $ 5.30 $ 6.55 - ----------------------------------------------------------------------------------- Income from Investment Operations: Net investment income 0.33(b) 0.53(b)(c) 0.62(d) Net realized and unrealized gain (loss) on investments and foreign currency (0.51) (0.65)(c) (1.24) ------- ------ ------- Total from Investment Operations (0.18) (0.12) (0.62) - ----------------------------------------------------------------------------------- Less Distributions Declared to Shareholders: From net investment income (0.40) (0.52) (0.63) Return of capital (0.03) (0.04) -- ------- ------ ------- Total Distributions Declared to Shareholders (0.43) (0.56) (0.63) - ----------------------------------------------------------------------------------- Net Asset Value, End of Period $ 4.01 $ 4.62 $ 5.30 Total return (e) (4.03)% (2.53)% (10.06)% - ----------------------------------------------------------------------------------- Ratios to Average Net Assets/ Supplemental Data: Expenses (i) 1.06% 0.97% 0.91% Net investment income (i) 8.17% 10.59%(c) 10.25% Waiver/reimbursement -- -- -- Portfolio turnover rate 63% 62% 28% Net assets, end of period (000's) $35,541 $1,978 $ 566 - ----------------------------------------------------------------------------------- (a)The Fund changed its fiscal year end from December 31 to May 31. (b)Per share data was calculated using average shares outstanding during the period. (c)Effective January 1, 2001, the Fund adopted the provisions of the AICPA Audit and Accounting Guide for Investment Companies and began amortizing premium and accreting discount on all debt securities. The effect of this change for the year ended December 31, 2001 was to increase net investment income per share by $0.05, decrease net realized and unrealized loss per share by $0.05 and increase the ratio of net investment income to average net assets from 10.01% to 10.59%. Per share data and ratios for periods prior to December 31, 2001 have not been restated to reflect this change in presentation. (d)The per share net investment income amount does not reflect the period's reclassification of differences between book and tax basis net investment income. (e)Total return at net asset value assuming all distributions reinvested. (f)Not annualized. (g)Had the Investment Advisor and/or Transfer Agent not waived a portion of expenses, total return would have been reduced. (h)Total return includes a voluntary reimbursement by the Investment Advisor for a realized investment loss. This reimbursement had an impact of less than 0.01% on the Fund's total return. (i)The benefits derived from custody credits had an impact of less than 0.01%. (j)Annualized. (k)Rounds to less than 0.01%. 45 BOARD CONSIDERATION AND APPROVAL OF INVESTMENT ADVISORY AGREEMENTS ------------------------------------ November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund The Advisory Fees and Expenses Committee of the Board of Trustees meets one or more times annually, usually in late summer, to review the advisory agreements (collectively, the "Agreements") of the funds for which the Trustees serve as trustees or directors (each a "fund") and determine whether to recommend that the full Board approve the continuation of the Agreements for an additional one-year period. After the Committee has made its recommendation, the full Board, including the Independent Trustees, determines whether to approve the continuation of the Agreements. In addition, the Board, including the Independent Trustees, considers matters bearing on the Agreements at most of its other meetings throughout the year and meets regularly with the heads of each investment area within Columbia. The Trustees also meet with selected fund portfolio managers at various times throughout the year. The Trustees receive and review all materials that they, their legal counsel or Columbia, the funds' investment adviser, believe to be reasonably necessary for the Trustees to evaluate the Agreements and determine whether to approve the continuation of the Agreements. Those materials generally include, among other items, (i) information on the investment performance of each fund relative to the performance of peer groups of mutual funds and the fund's performance benchmarks, (ii) information on each fund's advisory fees and other expenses, including information comparing the fund's expenses to those of peer groups of mutual funds and information about any applicable expense caps and fee "breakpoints," (iii) sales and redemption data, (iv) information about the profitability of the Agreements to Columbia, and potential "fall-out" or ancillary benefits that Columbia and its affiliates may receive as a result of their relationships with the funds and (v) information obtained through Columbia's response to a questionnaire prepared at the request of the Trustees by counsel to the funds and independent legal counsel to the Independent Trustees. The Trustees also consider other information such as (vi) Columbia's financial results and financial condition, (vii) each fund's investment objective and strategies and the size, education and experience of Columbia's investment staffs and their use of technology, external research and trading cost measurement tools, (viii) the allocation of the funds' brokerage, if any, including allocations to brokers affiliated with Columbia and the use of "soft" commission dollars to pay fund expenses and to pay for research products and services, (ix) Columbia's resources devoted to, and its record of compliance with, the funds' investment policies and restrictions, policies on personal securities transactions and other compliance policies, (x) Columbia's response to various legal and regulatory proceedings since 2003 and (xi) the economic outlook generally and for the mutual fund industry in particular. In addition, the Trustees confer with their independent fee consultant and review materials relating to the Agreements that the independent fee consultant provides. Throughout the process, the Trustees have the opportunity to ask questions of and request additional materials from Columbia and to consult independent legal counsel to the Independent Trustees. The Board of Trustees most recently approved the continuation of the Agreements at its October, 2005 meeting, following meetings of the Advisory Fees and Expenses Committee held in August, September, and October, 2005. In considering whether to approve the continuation of the Agreements, the Trustees, including the Independent Trustees, did not identify any single factor as determinative, and each weighed various factors as he or she deemed appropriate. The Trustees considered the following matters in connection with their approval of the continuation of the Agreements: The nature, extent and quality of the services provided to the funds under the Agreements. The Trustees considered the nature, extent and quality of the services provided by Columbia and its affiliates to the funds and the resources dedicated to the funds by Columbia and its affiliates. Among other things, the Trustees considered (i) Columbia's ability, including its resources, compensation programs for personnel involved in fund management, reputation and other attributes, to attract and retain highly qualified research, advisory and supervisory investment professionals; (ii) the portfolio management services provided by those investment professionals; and (iii) the trade execution services provided on behalf of the funds. For each fund, the Trustees also considered the benefits to shareholders of investing in a mutual fund that is part of a family of funds offering exposure to a variety of asset classes and investment disciplines and providing for a variety of fund and shareholder services. After reviewing those and related factors, the Trustees concluded, within the context of their overall conclusions regarding each of the Agreements, that the nature, extent and quality of services provided supported the continuation of the Agreements. Investment performance of the funds and Columbia. The 46 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund Trustees reviewed information about the performance of each fund over various time periods, including information prepared by an independent third party that compared the performance of each fund to the performance of peer groups of mutual funds and performance benchmarks. The Trustees also reviewed a description of the third party's methodology for identifying each fund's peer group for purposes of performance and expense comparisons. The Trustees also considered additional information that the Advisory Fees and Expenses Committee requested from Columbia relating to funds that presented relatively weaker performance and/or relatively higher expenses. In the case of each fund that had performance that lagged that of a relevant peer group for certain (although not necessarily all) periods, the Trustees concluded that other factors relevant to performance were sufficient, in light of other considerations, to warrant continuation of the fund's Agreements. Those factors varied from fund to fund, but included one or more of the following: (i) that the fund's performance, although lagging in certain recent periods, was stronger over the longer term; (ii) that the underperformance was attributable, to a significant extent, to investment decisions that were reasonable and consistent with the fund's investment strategy and policies and that the fund was performing as expected, given market conditions and the fund's investment strategy; (iii) that the fund's performance was competitive when compared to other relevant performance benchmarks or peer groups; (iv) that Columbia had taken or was taking steps designed to help improve the fund's investment performance, including, but not limited to, replacing portfolio managers or modifying investment strategies; (v) that the fund's advisory fee had recently been, or was proposed to be, reduced, with the goal of helping the fund's net return to shareholders become more competitive; and (vi) that other fund expenses, such as transfer agency or fund accounting fees, have recently been reduced, with the goal of helping the fund's net return to shareholders become more competitive. The Trustees also considered Columbia's performance and reputation generally, the funds' performance as a fund family generally, and Columbia's historical responsiveness to Trustee concerns about performance and Columbia's willingness to take steps intended to improve performance. After reviewing those and related factors, the Trustees concluded, within the context of their overall conclusions regarding each of the Agreements, that the performance of each fund and Columbia was sufficient, in light of other considerations, to warrant the continuation of the Agreements. The costs of the services provided and profits realized by Columbia and its affiliates from their relationships with the funds. The Trustees considered the fees charged to the funds for advisory services as well as the total expense levels of the funds. That information included comparisons (provided both by management and by an independent third party) of the funds' advisory fees and total expense levels to those of their peer groups and information about the advisory fees charged by Columbia to comparable accounts. In considering the fees charged to comparable accounts, the Trustees took into account, among other things, management's representations about the differences between managing mutual funds as compared to other types of accounts, including the additional resources required to effectively manage mutual funds and distribute mutual fund shares. In evaluating each fund's advisory fees, the Trustees also took into account the demands, complexity and quality of the investment management of the fund. The Trustees considered reductions in advisory fee rates, implementation of advisory fee breakpoints, institution of advisory fee waivers, and changes to expense caps, which benefited a number of the funds. Furthermore, the Trustees considered the projected impact on expenses resulting from the overall cost reductions that management anticipated would result from the shift to a common group of service providers for transfer agency, fund accounting and custody services for mutual funds advised by Bank of America affiliates. The Trustees also noted management's stated justification for the fees charged to the funds, which included information about the performance of the funds, the services provided to the funds and management's view as to why it was appropriate that some funds bear advisory fees or total expenses greater than their peer group medians. The Trustees also considered the compensation directly or indirectly received by Columbia and its affiliates from their relationships with the funds. The Trustees reviewed information provided by management as to the profitability to Columbia and its affiliates of their relationships with the funds, and information about the allocation of expenses used to calculate profitability. When reviewing profitability, the Trustees also considered court cases in which adviser profitability was an issue in whole or in part, the performance of the relevant funds, the expense levels of the funds, and whether Columbia had implemented 47 - -------------------------------------------------------------------------------- November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund breakpoints and/or expense caps with respect to the funds. After reviewing those and related factors, the Trustees concluded, within the context of their overall conclusions regarding each of the Agreements, that the advisory fees charged to each of the funds were fair and reasonable, and that the costs of the advisory services generally, and the related profitability to Columbia and its affiliates of their relationships with the funds, supported the continuation of the Agreements. Economies of Scale. The Trustees considered the existence of any economies of scale in the provision of services by Columbia to each fund and whether those economies were shared with the fund through breakpoints in the investment advisory fees or other means, such as expense waivers. The Trustees noted that many of the funds benefited from breakpoints, expense caps, or both. In considering those issues, the Trustees also took note of the costs of the services provided (both on an absolute and a relative basis) and the profitability to Columbia and its affiliates of their relationships with the funds, as discussed above. After reviewing those and related factors, the Trustees concluded, within the context of their overall conclusions regarding each of the Agreements, that the extent to which economies of scale were shared with the funds supported the continuation of the Agreements. Other Factors. The Trustees also considered other factors, which included but were not limited to the following: .. the extent to which each fund had operated in accordance with its investment objective and its record of compliance with its investment restrictions, and the compliance programs of the funds and Columbia. They also considered the compliance-related resources that Columbia and its affiliates were providing to the funds. .. the nature, quality, cost and extent of administrative and shareholder services performed by Columbia and its affiliates, both under the Agreements and under separate agreements for the provision of transfer agency and administrative services. .. so-called "fall-out benefits" to Columbia, such as the engagement of its affiliates to provide distribution, brokerage and transfer agency services to the funds, and the benefits of research made available to Columbia by reason of brokerage commissions generated by the funds' securities transactions, as well as possible conflicts of interest associated with those fall-out and other benefits, and the reporting, disclosure and other processes in place to disclose and monitor those possible conflicts of interest. .. the draft report provided by the independent fee consultant, which included information about and analysis of the funds' fees, expenses and performance. Based on their evaluation of all factors that they deemed to be material, including those factors described above, and assisted by the advice of independent counsel and the independent fee consultant, the Trustees, including the Independent Trustees, approved the continuance of each of the Agreements through November 30, 2006. 48 SUMMARY OF MANAGEMENT FEE EVALUATION BY INDEPENDENT FEE CONSULTANT ------------------------------------ November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund PREPARED PURSUANT TO THE FEBRUARY 9, 2005 ASSURANCE OF DISCONTINUANCE BETWEEN THE OFFICE OF ATTORNEY GENERAL OF NEW YORK STATE AND COLUMBIA MANAGEMENT ADVISORS, INC. AND COLUMBIA FUNDS DISTRIBUTOR, INC. OCTOBER 11, 2005 I. OVERVIEW Columbia Management Advisors, Inc. ("CMA") and Columbia Funds Distributors, Inc. ("CFD") (CFD together with CMA referred to herein as Columbia Management Group or "CMG/1/"), entered into an agreement with the New York Attorney General's Office in the form of an Assurance of Discontinuance (the "AOD"). The AOD stipulated that CMA would be permitted to manage or advise the Columbia Funds only if the Independent Members (as such term is defined in the AOD) of the Columbia Funds' Board of Trustees/Directors (collectively the "Trustees") appointed a Senior Officer or an Independent Fee Consultant ("IFC") who, among other things, is to manage the process by which management fees are negotiated. On May 15, 2005, the Independent Members of the Board appointed me as the IFC for the Columbia Funds. This report is the annual written evaluation of the Columbia Funds for 2005 that I have prepared in my capacity as IFC, as required by the AOD. A. Duties of the Independent Fee Consultant As part of the AOD, the Independent Members of the Columbia Funds' Board of Trustees/Directors agreed to retain an independent fee consultant who was to participate in the management fee negotiation process. The IFC is charged with "... duties and responsibilities [that] include managing the process by which proposed management fees (including, but not limited to, advisory fees) to be charged the Columbia Fund[s] are negotiated so that they are negotiated in a manner which is at arms length and reasonable and consistent with this Assurance of Discontinuance." However, the IFC does not replace the Trustees in their role of negotiating management and other fees with CMG and its affiliates. In particular, the AOD states that "Columbia Advisors may manage or advise a Columbia Fund only if the reasonableness of the proposed management fees is determined by the Board of Trustees of the Columbia Fund using ... an annual independent written evaluation prepared by or under the direction of the .... Independent Fee Consultant...." This report, pursuant to the AOD, constitutes the "annual independent written evaluation prepared by or under the direction of the... Independent Fee Consultant." The AOD requires the IFC report to consider at least the following: a) Management fees (including any components thereof ) charged by other mutual fund companies for like services; b) Management fees (including any components thereof ) charged to institutional and other clients of CMA for like services; c) Costs to CMA and its affiliates of supplying services pursuant to the management fee agreements, excluding any intra-corporate profit; d) Profit margins of CMA and its affiliates from supplying such services; e) Possible economies of scale as the CMA fund grows larger; and f) The nature and quality of CMA services, including Columbia Funds' performance. This report is designed to assist the Board in evaluating the 2005 contract renewal for Columbia Funds. In addition, this report points out areas where the Board may deem additional information and analysis to be appropriate over time. B. Sources of Information Used in My Evaluation I have requested data from CMG and various third party industry data sources or independent research companies that work in the mutual fund arena. The following list generally describes the types of information I requested. 1. I collected data on performance, management fees, and expense ratios of both Columbia Funds and comparable non-Columbia Funds. The sources of this information were CMG, Lipper Inc. ("Lipper") and Morningstar Inc. ("Morningstar"). While Lipper and Morningstar each selected a different group of peer funds it deemed appropriate against which to measure the relative performance and fees of Columbia Funds, I conducted an independent review of the appropriateness of each peer group. 2. I reviewed data on CMG's expense and profitability that I obtained from CMA directly. 1Prior to the date of this report, CMA merged into an affiliated entity, Banc of America Capital Management, LLC ("BACAP"), and BACAP then changed its name to Columbia Management Advisors, LLC which carries on the business of CMA, and CFD changed its name to Columbia Management Distributors, Inc. 49 SUMMARY OF MANAGEMENT FEE EVALUATION BY INDEPENDENT FEE CONSULTANT ------------------------------------ November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund 3. I have reviewed data on the organizational structure of CMG in general. 4. I collected information on profitability from Strategic Insight Mutual Fund Research and Consulting, LLC ("Strategic Insight"). I used this third-party independent research as an additional method to gauge the accuracy of the data collected in (2) above. 5. I conducted interviews with various CMG staff, including members of the senior management team, legal staff, heads of affiliates, portfolio managers, and financial personnel. 6. I reviewed current 2005 Section 15(c) material provided to the Board and material presented to the Board in the 2004 fee and performance evaluation. 7. I have reviewed various academic research papers, industry publications, and other available literature dealing with mutual fund operations, profitability, and other issues. In addition, I have reviewed SEC releases and studies of mutual fund expenses. 8. I have reviewed documents pertaining to recent mutual fund litigation in general and publicly available information about litigation where CMG has been involved. In addition, I have engaged NERA Economic Consulting ("NERA") and independent consultant Dr. John Rea to assist me in data management and analysis. Both NERA and Dr. Rea have extensive experience in the mutual fund industry through consulting, government positions, or industry trade groups that provide unique insights and special knowledge pertaining to my independent analysis of fees, performance, and profitability. I have also retained Shearman & Sterling LLP as outside counsel to advise me in connection with my review. C. Qualifications and Independence I am the Walter H. Carpenter Chair and Professor of Finance at Babson College. Before this I was the Chief Economist of the U.S. Securities and Exchange Commission. I have no material relationship with Bank of America or CMG aside from acting as IFC, and am aware of no relationship with any of their affiliates. {Resume omitted] II. EVALUATION OF THE GENERAL PROCESS USED TO NEGOTIATE THE ADVISORY CONTRACT A. General Considerations My analysis considered all factors and information I reviewed on the finances and operations of Columbia Funds. I gave each factor an appropriate weight in my overall findings, and no single factor was in itself the sole criterion for a finding or conclusion. My objective was to assess all of the information provided and conduct a robust evaluation of Columbia Funds' operations, fees, and performance. My analysis and thought processes will and, I believe, should, differ in certain ways from the processes used by Trustees in their evaluation of the management agreements. In particular, because of my technical and quantitative background, I may use techniques and data that Trustees have not previously felt would be useful. I view this supplemental analysis as appropriate because my role is to assist Trustees in their decisions, and to the extent that I bring new ideas or analysis to the evaluation, I believe this improves the process by which management fees for the Columbia Funds may be negotiated in accordance with the AOD. Finally, as part of my role as IFC, I have, from time to time, sent to Trustees additional papers and reports produced by third parties that I felt had bearing on the fee negotiation process. I viewed these materials as educational in nature and felt they would aid Trustees in placing their work in context. B. CMG Management Interviews As a starting point of my analysis, I have met with members of CMG staff to gain an understanding of the organizational structure and personnel involved in running the Columbia fund family. I have had general discussions and have received information about the management structure of CMG. My conversations with management have been informative. In addition, I have participated in Board meetings where Trustees and management have discussed issues relating to management agreements and performance of Columbia Funds. When I felt it was appropriate, I added my opinions on particular matters, such as fund performance or fee levels, to the discussion. C. Trustees' Fee and Performance Evaluation Process After making initial requests for information, members of the Trustees of the Columbia Funds met in advance of the October Section 15(c) contract approval meeting to review certain fee, performance and other data for the Columbia Funds and to ask questions and make requests of management. Trustees have developed a process to evaluate the fee and expense levels and performance of Columbia Funds. 50 SUMMARY OF MANAGEMENT FEE EVALUATION BY INDEPENDENT FEE CONSULTANT ------------------------------------ November 30, 2005 (unaudited) Columbia High Yield Opportunity Fund This process is used to highlight those funds that have been performing poorly, may have had higher management fees or expense ratios, or both. The process involves providing instructions to Lipper to prepare specific data analyses tailored to the Trustees review framework. These instructions include highlighting funds that hit one or more fee performance "screens." The six screens the Trustees use are as follows: a. 5th Lipper quintile in actual management fee; b. 5th Lipper quintile in total expense ratio; c. Three or more 5th Lipper quintile rankings in the 1-, 3-, 5- or 10-year performance rankings; d. Sum of the Lipper Quintile Rank (1-year performance) and the Lipper Quintile Rank (actual management fee) totals a number equal to or higher than 8; e. Sum of the Lipper Quintile Rank (1-year performance) and the Lipper Quintile Rank (total expense ratio) totals a number equal to or higher than 8; and f. Sum of the Lipper Quintile Rank (3-year performance) and the Lipper Quintile Rank (total expense ratio) totals a number equal to or higher than 8. If a fund hits one or more of these screens, it is highlighted for additional review by the Trustees. This method is only used as an aid for Trustees to highlight funds and is not the sole test of whether the Board will determine to take particular actions concerning fees or performance. Funds that have not been flagged by this screen also may be singled out for fee and performance reasons, and the Trustees may determine not to take action with respect to the fees or performance of funds that have been flagged by the screen. These screens contribute to the basis for discussions on Trustees' views on the Columbia Funds. III. FINDINGS My findings based on my work as IFC are as follows: 1. The Trustees have the relevant information necessary to form an opinion on the reasonableness of fees and evaluate the performance of the Columbia Funds. The process the Trustees used in preparing to reach their determination has been open and informative. In my view, the 2005 process by which the management fees of the Columbia Funds have been negotiated thus far has been, to the extent practicable, at arm's length and reasonable and consistent with the AOD. 2. Columbia Funds demonstrated a range of performance relative to their peers. I find that across the fund complex, 54.26 percent of Columbia Funds have performance higher than the median of their respective Lipper performance universe, and 42.55 percent of Columbia Funds have performance higher than the median of their respective Lipper performance group. In addition, Lipper performance universe and group comparison showed that Columbia Funds were distributed roughly evenly across these quintiles. The Trustees have worked with management to address issues of funds that have demonstrated consistent or significant underperformance. 3. Columbia Funds demonstrate a range of management fees and expense ratios relative to their peers. I find that across the fund complex, 58.51 percent of Columbia Funds have expenses below the median of their Lipper expense universe, and 53.19 percent of Columbia Funds have expenses below the median of their Lipper expense group. In addition, Lipper expense universe and group comparisons show that Columbia Funds are distributed roughly evenly across these quintiles. The Trustees have taken steps to limit shareholder expenses for certain funds having management fees significantly above their peers, often though the use of fee waivers to which CMG has agreed. Consolidation of various funds and fund families managed by CMG has resulted in substantial savings in non-advisory expenses. 4. Profitability to CMG of the individual funds ranges widely, but the overall profitability to CMG of its relationship with the Columbia Funds appears to fall within a reasonable range. The method of cost allocation to funds is addressed in the material provided by CMG to the Trustees, but additional information may be necessary to make a judgment on fund level profitability. My review of profitability and cost allocation is ongoing, and I plan to continue to develop my views with regard to fund level profitability. 5. Columbia Funds have instituted fee schedules with breakpoints designed to enable investors to benefit from fund economies of scale, although 71% of the funds have not yet reached their first breakpoint. My analysis of the appropriateness of the breakpoint levels, which I expect will take into account the cost and profitability of the individual funds, is ongoing. My work is ongoing and my views may develop over time in light of new information and analysis. Respectfully submitted, Erik R. Sirri 51 IMPORTANT INFORMATION ABOUT THIS REPORT ------------------------------------ Columbia High Yield Opportunity Fund Transfer Agent Columbia Management Services, Inc. P.O. Box 8081 Boston MA 02266-8081 800-345-6611 Distributor Columbia Management Distributors, Inc. One Financial Center Boston MA 02111 Investment Advisor Columbia Management Advisors, LLC 100 Federal Street Boston MA 02110 The fund mails one shareholder report to each shareholder address. If you would like more than one report, please call shareholder services at 800-345-6611 and additional reports will be sent to you. This report has been prepared for shareholders of Columbia High Yield Opportunity Fund. This report may also be used as sales literature when preceded or accompanied by the current prospectus which provides details of sales charges, investment objectives and operating policies of the fund and with the most recent copy of the Columbia Funds Performance Update. A description of the fund's proxy voting policies and procedures is available (i) on the fund's website, www.columbiamanagement.com; (ii) on the Securities and Exchange Commission's website at www.sec.gov, and (iii) without charge, upon request, by calling 800-368-0346. Information regarding how the fund voted proxies relating to portfolio securities during the 12-month period ended June 30 is available from the SEC's website. Information regarding how the fund voted proxies relating to portfolio securities is also available from the fund's website. The fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-Q. The fund's Form N-Q is available on the SEC's website at www.sec.gov and may be reviewed and copied at the SEC's Public Reference Room in Washington, DC. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. Columbia Management is the primary investment management division of Bank of America Corporation. Columbia Management entities furnish investment management services and advise institutional and mutual fund portfolios. Columbia Management Advisors, Inc. and Banc of America Capital Management, LLC, both SEC registered investment advisors and wholly owned subsidiaries of Bank of America, N.A, merged on September 30, 2005. At that time, the newly combined advisor changed its name to Columbia Management Advisors, LLC ("CMA"). CMA will continue to operate as a SEC-registered investment advisor, wholly owned subsidiary of Bank of America, N.A. and part of Columbia Management. 52 [GRAPHIC] Help your fund reduce printing and postage costs! Elect to get your shareholder reports by electronic delivery. With Columbia's eDelivery eDelivery program, you receive an e-mail message when your shareholder report becomes available online. If your fund account is registered with Columbia Funds, you can sign up quickly and easily on our website at www.columbiafunds.com. Please note - if you own your fund shares through a financial institution, contact the institution to see if it offers electronic delivery. If you own your fund shares through a retirement plan, electronic delivery may not be available to you. Columbia High Yield Opportunity Fund Semiannual Report, November 30, 2005 ------------- PRSRT STD U.S. Postage PAID Holliston, MA Permit NO. 20 ------------- Columbia Management. (C)2006 Columbia Management Distributors, Inc. One Financial Center, Boston, MA 02111-2621 800.345.6611 www.columbiafunds.com Item 2. Code of Ethics. Not applicable at this time. Item 3. Audit Committee Financial Expert. Not applicable at this time. Item 4. Principal Accountant Fees and Services. Not applicable at this time. Item 5. Audit Committee of Listed Registrants. Not applicable. Item 6. Schedule of Investments The registrant's "Schedule I - Investments in securities of unaffiliated issuers" (as set forth in 17 CFR 210.12-12) is included in Item 1 of this Form N-CSR. Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies. Not applicable. Item 8. Portfolio Managers of Closed-End Management Investment Companies. Not applicable. Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers. Not applicable. Item 10. Submission of Matters to a Vote of Security Holders. There have not been any material changes to the procedures by which shareholders may recommend nominees to the registrant's board of directors, since those procedures were last disclosed in response to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14A or this Item. Item 11. Controls and Procedures. (a)The registrant's principal executive officer and principal financial officers, based on their evaluation of the registrant's disclosure controls and procedures as of a date within 90 days of the filing of this report, have concluded that such controls and procedures are adequately designed to ensure that information required to be disclosed by the registrant in Form N-CSR is accumulated and communicated to the registrant's management, including the principal executive officer and principal financial officer, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. (b)There were no changes in the registrant's internal control over financial reporting that occurred during the registrant's second fiscal quarter of the period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. Item 12. Exhibits. (a)(1) Code of ethics required to be disclosed under Item 2 of Form N-CSR: Not applicable at this time. (a)(2) Certifications pursuant to Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)) attached hereto as Exhibit 99.CERT. (a)(3) Not applicable. (b) Certification pursuant to Rule 30a-2(b) under the Investment Company Act of 1940 (17 CFR 270.30a-2(b)) attached hereto as Exhibit 99.906CERT. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (registrant) Columbia Funds Trust I By (Signature and Title) /S/ Christopher L. Wilson ------------------------------- Christopher L. Wilson, President Date January 25, 2006 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/ Christopher L. Wilson ------------------------------- Christopher L. Wilson, President Date January 25, 2006 By (Signature and Title) /S/ J. Kevin Connaughton ------------------------------- J. Kevin Connaughton, Treasurer Date January 25, 2006