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 811-7992 - ------------------------------------------------------------------------------- MFS SERIES TRUST XI - ------------------------------------------------------------------------------- (Exact name of registrant as specified in charter) 500 Boylston Street, Boston, Massachusetts 02116 - ------------------------------------------------------------------------------- (Address of principal executive offices) (Zip code) Susan S. Newton Massachusetts Financial Services Company 500 Boylston Street Boston, Massachusetts 02116 - ------------------------------------------------------------------------------- (Name and address of agents for service) Registrant's telephone number, including area code: (617) 954-5000 - ------------------------------------------------------------------------------- Date of fiscal year end: September 30 - ------------------------------------------------------------------------------- Date of reporting period: March 31, 2006 - ------------------------------------------------------------------------------- ITEM 1. REPORTS TO STOCKHOLDERS. MFS(R) UNION STANDARD(R) EQUITY FUND 3/31/06 SEMIANNUAL REPORT - ------------------------------------------------------------------------------- LETTER FROM THE CEO 1 - --------------------------------------------------- PORTFOLIO COMPOSITION 2 - --------------------------------------------------- EXPENSE TABLE 3 - --------------------------------------------------- PORTFOLIO OF INVESTMENTS 5 - --------------------------------------------------- FINANCIAL STATEMENTS 9 - --------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 17 - --------------------------------------------------- BOARD REVIEW OF INVESTMENT ADVISORY AGREEMENT 23 - --------------------------------------------------- PROXY VOTING POLICIES AND INFORMATION 23 - --------------------------------------------------- QUARTERLY PORTFOLIO DISCLOSURE 23 - --------------------------------------------------- CONTACT INFORMATION BACK COVER - --------------------------------------------------- THE REPORT IS PREPARED FOR THE GENERAL INFORMATION OF SHAREHOLDERS. IT IS INTENDED FOR DISTRIBUTION TO PROSPECTIVE INVESTORS ONLY WHEN PRECEDED OR ACCOMPANIED BY A CURRENT PROSPECTUS. M F S(SM) INVESTMENT MANAGEMENT(R) LETTER FROM THE CEO [Photo of Robert J. Manning] Dear Shareholders, It has been said that change is the only constant in life. As investors have seen, that theme is still accurate today as we recently have experienced shifting economic cycles because of natural disasters and political instability around the globe. Markets worldwide have fluctuated in the past year as devastating hurricanes had a dramatic effect on the international economy, particularly on oil prices. We witnessed political unrest in the Middle East, highlighted by instability in Iraq, and in Africa, the usually stable Nigeria also experienced violence. As a result, energy prices have bounced up and down, with crude oil prices at one point topping a record $70 per barrel. Such cycles are not uncommon and in fact have almost become the norm in our everyday lives. What does all of this mean to you as an investor? In times like these, it helps to know that you're working with a seasoned investment professional who has experience to guide you through difficult times. At MFS(R), we believe our investment management team has the knowledge and confidence to navigate through difficult cycles and at the same time see through adversity to find investment opportunities for our clients and shareholders. Our investment management process, honed over 80 years, combines a unique concept of teamwork with our unwavering focus on the long term. We firmly believe that the best way to realize long-term financial goals - be it a college education, a comfortable retirement, or a secure family legacy - is to follow a three-pronged approach that focuses on longer time horizons. Allocate holdings across the major asset classes - including stocks, bonds, and cash. Diversify within each class to take advantage of different market segments and investing styles. Rebalance assets regularly to maintain a desired asset allocation. Of course, these strategies cannot guarantee a profit or protect against a loss. This long-term approach requires diligence and patience, two traits that in our experience are essential to capitalizing on the many opportunities the financial markets can offer - through both up and down economic cycles. Respectfully, /s/ Robert J. Manning Robert J. Manning Chief Executive Officer and Chief Investment Officer MFS Investment Management(R) May 15, 2006 The opinions expressed in this letter are those of MFS, and no forecasts can be guaranteed. PORTFOLIO COMPOSITION PORTFOLIO STRUCTURE Stocks 98.1% Cash & Other Assets 1.9% TOP 10 HOLDINGS General Electric Co. 4.2% ------------------------------------------------ Exxon Mobil Corp. 4.2% ------------------------------------------------ Johnson & Johnson 2.6% ------------------------------------------------ J.P. Morgan Chase & Co. 2.4% ------------------------------------------------ Altria Group, Inc. 2.3% ------------------------------------------------ International Business Machines Corp. 2.2% ------------------------------------------------ Bank of America Corp. 2.2% ------------------------------------------------ Verizon Communications, Inc. 2.1% ------------------------------------------------ Merck & Co., Inc. 2.1% ------------------------------------------------ Goldman Sachs Group, Inc. 2.1% ------------------------------------------------ EQUITY SECTORS Financial Services 17.6% ------------------------------------------------ Technology 14.3% ------------------------------------------------ Industrial Goods & Services 14.2% ------------------------------------------------ Health Care 10.8% ------------------------------------------------ Consumer Staples 9.0% ------------------------------------------------ Energy 8.6% ------------------------------------------------ Utilities & Communications 6.9% ------------------------------------------------ Basic Materials 5.0% ------------------------------------------------ Retailing 4.5% ------------------------------------------------ Leisure 4.5% ------------------------------------------------ Transportation 1.2% ------------------------------------------------ Autos & Housing 0.8% ------------------------------------------------ Special Products & Services 0.7% ------------------------------------------------ Percentages are based on net assets as of 3/31/06. The portfolio is actively managed, and current holdings may be different. EXPENSE TABLE FUND EXPENSES BORNE BY THE SHAREHOLDERS DURING THE PERIOD, OCTOBER 1, 2005 THROUGH MARCH 31, 2006. As a shareholder of the fund, you incur two types of costs: (1) transaction costs, including sales charges (loads) on certain purchase or redemption payments and redemption fees on certain exchanges and redemptions, and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in the fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 invested at the beginning of the period and held for the entire period October 1, 2005 through March 31, 2006. ACTUAL EXPENSES The first line for each share class in the following table provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number in the first line under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The second line for each share class in the following table provides information about hypothetical account values and hypothetical expenses based on the fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption fees. Therefore, the second line for each share class in the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ----------------------------------------------------------------------------- Expenses Beginning Ending Paid During Annualized Account Account Period (p) Expense Value Value 10/01/05 Share Class Ratio 10/01/05 3/31/06 -3/31/06 - ----------------------------------------------------------------------------- Actual 1.30% $1,000.00 $1,070.60 $6.71 A ----------------------------------------------------------------- Hypothetical(h) 1.30% $1,000.00 $1,018.45 $6.54 - ----------------------------------------------------------------------------- Actual 1.95% $1,000.00 $1,066.20 $10.05 B ----------------------------------------------------------------- Hypothetical(h) 1.95% $1,000.00 $1,015.21 $9.80 - ----------------------------------------------------------------------------- Actual 1.95% $1,000.00 $1,066.20 $10.05 C ----------------------------------------------------------------- Hypothetical(h) 1.95% $1,000.00 $1,015.21 $9.80 - ----------------------------------------------------------------------------- Actual 0.95% $1,000.00 $1,071.60 $4.91 I ----------------------------------------------------------------- Hypothetical(h) 0.95% $1,000.00 $1,020.19 $4.78 - ----------------------------------------------------------------------------- (h) 5% class return per year before expenses. (p) Expenses paid is equal to each class' annualized expense ratio, as shown above, multiplied by the average account value over the period, multiplied by the number of days in the period, divided by the number of days in the year. Expenses paid do not include any applicable sales charges (loads) or redemption fees. If these transaction costs had been included, your costs would have been higher. PORTFOLIO OF INVESTMENTS (unaudited) - 3/31/06 The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes. Common Stocks - 98.1% - -------------------------------------------------------------------------------------------------- ISSUER SHARES/PAR VALUE ($) - -------------------------------------------------------------------------------------------------- Aerospace - 3.1% - -------------------------------------------------------------------------------------------------- Lockheed Martin Corp. 11,063 $ 831,163 Northrop Grumman Corp. 10,809 738,147 ----------- $ 1,569,310 - -------------------------------------------------------------------------------------------------- Banks & Credit Companies - 5.5% - -------------------------------------------------------------------------------------------------- Bank of America Corp. 24,296 $ 1,106,440 J.P. Morgan Chase & Co. 29,600 1,232,544 Ryder System, Inc. 10,088 451,741 ----------- $ 2,790,725 - -------------------------------------------------------------------------------------------------- Broadcast & Cable TV - 3.2% - -------------------------------------------------------------------------------------------------- Time Warner, Inc. 38,370 $ 644,232 Viacom, Inc., "B" (n) 11,223 435,451 Walt Disney Co. 19,900 555,011 ----------- $ 1,634,694 - -------------------------------------------------------------------------------------------------- Brokerage & Asset Managers - 6.1% - -------------------------------------------------------------------------------------------------- Bear Stearns Cos., Inc. 5,200 $ 721,240 Goldman Sachs Group, Inc. 6,600 1,035,936 Lehman Brothers Holdings, Inc. 5,500 794,915 Merrill Lynch & Co., Inc. 6,496 511,625 ----------- $ 3,063,716 - -------------------------------------------------------------------------------------------------- Business Services - 0.7% - -------------------------------------------------------------------------------------------------- Accenture Ltd., "A" 11,900 $ 357,833 - -------------------------------------------------------------------------------------------------- Chemicals - 2.4% - -------------------------------------------------------------------------------------------------- Dow Chemical Co. 9,600 $ 389,760 PPG Industries, Inc. 7,100 449,785 Rohm & Haas Co. 7,200 351,864 ----------- $ 1,191,409 - -------------------------------------------------------------------------------------------------- Computer Software - 3.0% - -------------------------------------------------------------------------------------------------- Adobe Systems, Inc. (n) 14,900 $ 520,308 Compuware Corp. (n) 62,468 489,124 Microsoft Corp. 19,320 525,697 ----------- $ 1,535,129 - -------------------------------------------------------------------------------------------------- Computer Software - Systems - 3.7% - -------------------------------------------------------------------------------------------------- Apple Computer, Inc. (n) 11,500 $ 721,280 International Business Machines Corp. 13,600 1,121,592 ----------- $ 1,842,872 - -------------------------------------------------------------------------------------------------- Construction - 0.8% - -------------------------------------------------------------------------------------------------- Masco Corp. 12,700 $ 412,623 - -------------------------------------------------------------------------------------------------- Consumer Goods & Services - 3.5% - -------------------------------------------------------------------------------------------------- Colgate-Palmolive Co. 10,900 $ 622,390 Kimberly-Clark Corp. 7,440 430,032 Procter & Gamble Co. 12,560 723,707 ----------- $ 1,776,129 - -------------------------------------------------------------------------------------------------- Electrical Equipment - 4.2% - -------------------------------------------------------------------------------------------------- General Electric Co. 61,348 $ 2,133,683 - -------------------------------------------------------------------------------------------------- Electronics - 4.6% - -------------------------------------------------------------------------------------------------- Amphenol Corp., "A" 7,448 $ 388,637 Intel Corp. 38,100 737,235 PerkinElmer, Inc. 17,883 419,714 SanDisk Corp. (n) 5,900 339,368 Texas Instruments, Inc. 13,165 427,468 ----------- $ 2,312,422 - -------------------------------------------------------------------------------------------------- Energy - Independent - 0.7% - -------------------------------------------------------------------------------------------------- Frontier Oil Corp. 6,000 $ 356,100 - -------------------------------------------------------------------------------------------------- Energy - Integrated - 7.9% - -------------------------------------------------------------------------------------------------- Chevron Corp. 15,100 $ 875,347 ConocoPhillips 16,200 1,023,030 Exxon Mobil Corp. 34,732 2,113,790 ----------- $ 4,012,167 - -------------------------------------------------------------------------------------------------- Food & Drug Stores - 2.6% - -------------------------------------------------------------------------------------------------- CVS Corp. 22,540 $ 673,270 Kroger Co. 31,800 647,448 ----------- $ 1,320,718 - -------------------------------------------------------------------------------------------------- Food & Non-Alcoholic Beverages - 3.2% - -------------------------------------------------------------------------------------------------- General Mills, Inc. 12,789 $ 648,147 PepsiCo, Inc. 17,100 988,209 ----------- $ 1,636,356 - -------------------------------------------------------------------------------------------------- Forest & Paper Products - 1.4% - -------------------------------------------------------------------------------------------------- International Paper Co. 19,700 $ 681,029 - -------------------------------------------------------------------------------------------------- Gaming & Lodging - 1.3% - -------------------------------------------------------------------------------------------------- Harrah's Entertainment, Inc. 8,253 $ 643,404 - -------------------------------------------------------------------------------------------------- General Merchandise - 1.9% - -------------------------------------------------------------------------------------------------- Federated Department Stores, Inc. 6,119 $ 446,687 J.C. Penney Co., Inc. 8,500 513,485 ----------- $ 960,172 - -------------------------------------------------------------------------------------------------- Insurance - 6.0% - -------------------------------------------------------------------------------------------------- American International Group, Inc. 13,738 $ 907,944 Hartford Financial Services Group, Inc. 8,697 700,543 MetLife, Inc. 15,000 725,550 St. Paul Travelers Cos., Inc. 16,100 672,819 ----------- $ 3,006,856 - -------------------------------------------------------------------------------------------------- Machinery & Tools - 6.9% - -------------------------------------------------------------------------------------------------- AGCO Corp. (n) 21,000 $ 435,540 Cummins, Inc. 6,600 693,660 Deere & Co. 6,900 545,445 Harsco Corp. 5,500 454,410 Illinois Tool Works, Inc. 7,300 703,063 Parker Hannifin Corp. 3,700 298,257 Timken Co. 11,587 373,912 ----------- $ 3,504,287 - -------------------------------------------------------------------------------------------------- Medical & Health Technology & Services - 2.5% - -------------------------------------------------------------------------------------------------- Express Scripts, Inc. (n) 3,700 $ 325,230 HCA, Inc. 11,400 522,006 Manor Care, Inc. 9,000 399,150 ----------- $ 1,246,386 - -------------------------------------------------------------------------------------------------- Medical Equipment - 2.0% - -------------------------------------------------------------------------------------------------- Fisher Scientific International, Inc. (n) 7,475 $ 508,674 Zimmer Holdings, Inc. (n) 7,735 522,886 ----------- $ 1,031,560 - -------------------------------------------------------------------------------------------------- Network & Telecom - 3.0% - -------------------------------------------------------------------------------------------------- Cisco Systems, Inc. (n) 16,960 $ 367,523 Corning, Inc. (n) 28,900 777,699 QUALCOMM, Inc. 7,000 354,270 ----------- $ 1,499,492 - -------------------------------------------------------------------------------------------------- Pharmaceuticals - 6.3% - -------------------------------------------------------------------------------------------------- Johnson & Johnson 22,438 $ 1,328,778 Merck & Co., Inc. 29,790 1,049,502 Wyeth 16,201 786,073 ----------- $ 3,164,353 - -------------------------------------------------------------------------------------------------- Specialty Chemicals - 1.2% - -------------------------------------------------------------------------------------------------- Praxair, Inc. 10,900 $ 601,135 - -------------------------------------------------------------------------------------------------- Telephone Services - 4.2% - -------------------------------------------------------------------------------------------------- AT&T, Inc. 16,150 $ 436,696 BellSouth Corp. 18,531 642,099 Verizon Communications, Inc. 30,845 1,050,581 ----------- $ 2,129,376 - -------------------------------------------------------------------------------------------------- Tobacco - 2.3% - -------------------------------------------------------------------------------------------------- Altria Group, Inc. 16,188 $ 1,147,082 - -------------------------------------------------------------------------------------------------- Trucking - 1.2% - -------------------------------------------------------------------------------------------------- CNF, Inc. 7,300 $ 364,562 YRC Worldwide, Inc. (n) 6,800 258,808 ----------- $ 623,370 - -------------------------------------------------------------------------------------------------- Utilities - Electric Power - 2.7% - -------------------------------------------------------------------------------------------------- CMS Energy Corp. (n) 29,900 $ 387,205 PPL Corp. 11,300 332,220 TXU Corp. 14,900 666,924 ----------- $ 1,386,349 - -------------------------------------------------------------------------------------------------- TOTAL COMMON STOCKS (IDENTIFIED COST, $40,488,162) $49,570,737 - -------------------------------------------------------------------------------------------------- Short-Term Obligations - 1.1% - -------------------------------------------------------------------------------------------------- Citigroup Funding, Inc., 4.83%, due 4/03/06, at Amortized Cost(y) $ 566,000 $ 565,848 - -------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS (IDENTIFIED COST, $41,054,010) $50,136,585 - -------------------------------------------------------------------------------------------------- Other Assets, Less Liabilities - 0.8% 388,060 - -------------------------------------------------------------------------------------------------- NET ASSETS - 100.0% $50,524,645 - -------------------------------------------------------------------------------------------------- (n) Non-income producing security. (y) The rate shown represents an annualized yield at time of purchase. SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS Statement of Assets and Liabilities (unaudited) This statement represents your fund's balance sheet, which details the assets and liabilities composing the total value of the fund. AT 3/31/06 ASSETS - ------------------------------------------------------------------------------------------------------ Investments, at value (identified cost, $41,054,010) $50,136,585 Cash 673 Receivable for fund shares sold 350,043 Dividends receivable 65,679 Receivable from investment adviser 48,045 - ------------------------------------------------------------------------------------------------------ Total assets $50,601,025 - ------------------------------------------------------------------------------------------------------ LIABILITIES - ------------------------------------------------------------------------------------------------------ Payable for fund shares reacquired $5,668 Payable to affiliates Management fee 903 Shareholder servicing costs 2,227 Distribution and service fees 193 Administrative services fee 43 Payable for independent trustees' compensation 211 Accrued expenses and other liabilities 67,135 - ------------------------------------------------------------------------------------------------------ Total liabilities $76,380 - ------------------------------------------------------------------------------------------------------ Net assets $50,524,645 - ------------------------------------------------------------------------------------------------------ NET ASSETS CONSIST OF: - ------------------------------------------------------------------------------------------------------ Paid-in capital $49,125,950 Unrealized appreciation (depreciation) on investments 9,082,575 Accumulated net realized gain (loss) on investments (7,904,242) Undistributed net investment income 220,362 - ------------------------------------------------------------------------------------------------------ Net assets $50,524,645 - ------------------------------------------------------------------------------------------------------ Shares of beneficial interest outstanding 3,846,741 - ------------------------------------------------------------------------------------------------------ Statement of Assets and Liabilities (unaudited) - continued Class A shares - ------------------------------------------------------------------------------------------------------ Net assets $10,583,203 Shares outstanding 808,761 - ------------------------------------------------------------------------------------------------------ Net asset value per share $13.09 - ------------------------------------------------------------------------------------------------------ Offering price per share (100/94.25 X net asset value per share) $13.89 - ------------------------------------------------------------------------------------------------------ Class B shares - ------------------------------------------------------------------------------------------------------ Net assets $2,098,285 Shares outstanding 162,923 - ------------------------------------------------------------------------------------------------------ Net asset value and offering price per share $12.88 - ------------------------------------------------------------------------------------------------------ Class C shares - ------------------------------------------------------------------------------------------------------ Net assets $1,187,888 Shares outstanding 92,678 - ------------------------------------------------------------------------------------------------------ Net asset value and offering price per share $12.82 - ------------------------------------------------------------------------------------------------------ Class I shares - ------------------------------------------------------------------------------------------------------ Net assets $36,655,269 Shares outstanding 2,782,379 - ------------------------------------------------------------------------------------------------------ Net asset value, offering price, and redemption price per share $13.17 - ------------------------------------------------------------------------------------------------------ On sales of $50,000 or more, the offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B and Class C shares. SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS Statement of Operations (unaudited) This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations. SIX MONTHS ENDED 3/31/06 NET INVESTMENT INCOME - ------------------------------------------------------------------------------------------------------ Income Dividends $465,297 Interest 15,766 - ------------------------------------------------------------------------------------------------------ Total investment income $481,063 - ------------------------------------------------------------------------------------------------------ Expenses Management fee $156,730 Distribution and service fees 32,435 Shareholder servicing costs 29,927 Administrative services fee 7,128 Independent trustees' compensation 1,392 Custodian fee 11,135 Shareholder communications 18,125 Auditing fees 21,915 Legal fees 2,258 Registration fees 23,757 Miscellaneous 4,754 - ------------------------------------------------------------------------------------------------------ Total expenses $309,556 - ------------------------------------------------------------------------------------------------------ Fees paid indirectly (1,451) Reduction of expenses by investment adviser (48,394) - ------------------------------------------------------------------------------------------------------ Net expenses $259,711 - ------------------------------------------------------------------------------------------------------ Net investment income $221,352 - ------------------------------------------------------------------------------------------------------ REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS - ------------------------------------------------------------------------------------------------------ Net realized gain (loss) on investment transactions (identified cost basis) $1,545,114 - ------------------------------------------------------------------------------------------------------ Change in unrealized appreciation (depreciation) on investments $1,570,901 - ------------------------------------------------------------------------------------------------------ Net realized and unrealized gain (loss) on investments $3,116,015 - ------------------------------------------------------------------------------------------------------ Change in net assets from operations $3,337,367 - ------------------------------------------------------------------------------------------------------ SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS Statements of Changes in Net Assets These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions. SIX MONTHS ENDED YEAR ENDED 3/31/06 9/30/05 (UNAUDITED) CHANGE IN NET ASSETS - ------------------------------------------------------------------------------------------------------ FROM OPERATIONS - ------------------------------------------------------------------------------------------------------ Net investment income $221,352 $489,194 Net realized gain (loss) on investments 1,545,114 3,526,902 Net unrealized gain (loss) on investments 1,570,901 1,992,392 - ------------------------------------------------------------------------------------------------------ Change in net assets from operations $3,337,367 $6,008,488 - ------------------------------------------------------------------------------------------------------ DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ------------------------------------------------------------------------------------------------------ From net investment income Class A $(87,994) $(41,591) Class B (1,748) -- Class C (2,548) (128) Class I (396,025) (253,272) - ------------------------------------------------------------------------------------------------------ Total distributions declared to shareholders $(488,315) $(294,991) - ------------------------------------------------------------------------------------------------------ Change in net assets from fund share transactions $610,106 $870,203 - ------------------------------------------------------------------------------------------------------ Redemption fees $-- $20 - ------------------------------------------------------------------------------------------------------ Total change in net assets $3,459,158 $6,583,720 - ------------------------------------------------------------------------------------------------------ NET ASSETS - ------------------------------------------------------------------------------------------------------ At beginning of period 47,065,487 40,481,767 At end of period (including undistributed net investment income of $220,362 and $487,325, respectively) $50,524,645 $47,065,487 - ------------------------------------------------------------------------------------------------------ SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS Financial Highlights The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate by which an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period. SIX MONTHS YEARS ENDED 9/30 ENDED ----------------------------------------------------------------- CLASS A 3/31/06 2005 2004 2003 2002 2001 (UNAUDITED) Net asset value, beginning of period $12.33 $10.82 $9.49 $8.09 $9.98 $12.91 - ------------------------------------------------------------------------------------------------------------------------------ INCOME (LOSS) FROM INVESTMENT OPERATIONS - ------------------------------------------------------------------------------------------------------------------------------ Net investment income (d) $0.04 $0.10 $0.06 $0.05 $0.03 $0.02 Net realized and unrealized gain (loss) on investments and foreign currency 0.83 1.47 1.33 1.38 (1.90) (2.88) - ------------------------------------------------------------------------------------------------------------------------------ Total from investment operations $0.87 $1.57 $1.39 $1.43 $(1.87) $(2.86) - ------------------------------------------------------------------------------------------------------------------------------ LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ------------------------------------------------------------------------------------------------------------------------------ From net investment income $(0.11) $(0.06) $(0.06) $(0.03) $(0.02) $(0.07) - ------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $13.09 $12.33 $10.82 $9.49 $8.09 $9.98 - ------------------------------------------------------------------------------------------------------------------------------ Total return (%) (r)(s)(t) 7.06(n) 14.51 14.64 17.66(j) (18.76) (22.27) - ------------------------------------------------------------------------------------------------------------------------------ RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ------------------------------------------------------------------------------------------------------------------------------ Expenses before expense reductions (f) 1.50(a) 1.54 1.52 1.57 1.44 1.47 Expenses after expense reductions (f) 1.30(a) 1.30 1.30 1.26 1.20 1.22 Net investment income 0.70(a) 0.88 0.54 0.57 0.30 0.18 Portfolio turnover 24 48 59 59 48 69 Net assets at end of period (000 Omitted) $10,583 $9,994 $7,896 $6,634 $5,872 $9,493 - ------------------------------------------------------------------------------------------------------------------------------ SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEARS ENDED 9/30 ENDED ----------------------------------------------------------------- CLASS B 3/31/06 2005 2004 2003 2002 2001 (UNAUDITED) Net asset value, beginning of period $12.09 $10.62 $9.33 $7.98 $9.89 $12.82 - ------------------------------------------------------------------------------------------------------------------------------ INCOME (LOSS) FROM INVESTMENT OPERATIONS - ------------------------------------------------------------------------------------------------------------------------------ Net investment income (loss) (d) $0.00(w) $0.03 $(0.01) $(0.01) $(0.03) $(0.05) Net realized and unrealized gain (loss) on investments and foreign currency 0.80 1.44 1.30 1.36 (1.88) (2.87) - ------------------------------------------------------------------------------------------------------------------------------ Total from investment operations $0.80 $1.47 $1.29 $1.35 $(1.91) $(2.92) - ------------------------------------------------------------------------------------------------------------------------------ LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ------------------------------------------------------------------------------------------------------------------------------ From net investment income $(0.01) $-- $-- $-- $-- $(0.01) - ------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $12.88 $12.09 $10.62 $9.33 $7.98 $9.89 - ------------------------------------------------------------------------------------------------------------------------------ Total return (%) (r)(s)(t) 6.62(n) 13.84 13.83 16.92(j) (19.31) (22.77) - ------------------------------------------------------------------------------------------------------------------------------ RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ------------------------------------------------------------------------------------------------------------------------------ Expenses before expense reductions (f) 2.15(a) 2.19 2.17 2.21 2.09 2.12 Expenses after expense reductions (f) 1.95(a) 1.95 1.95 1.90 1.85 1.87 Net investment income (loss) 0.05(a) 0.25 (0.11) (0.08) (0.34) (0.46) Portfolio turnover 24 48 59 59 48 69 Net assets at end of period (000 Omitted) $2,098 $2,082 $2,234 $2,082 $2,534 $3,211 - ------------------------------------------------------------------------------------------------------------------------------ SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEARS ENDED 9/30 ENDED ----------------------------------------------------------------- CLASS C 3/31/06 2005 2004 2003 2002 2001 (UNAUDITED) Net asset value, beginning of period $12.06 $10.59 $9.30 $7.95 $9.85 $12.76 - ------------------------------------------------------------------------------------------------------------------------------ INCOME (LOSS) FROM INVESTMENT OPERATIONS - ------------------------------------------------------------------------------------------------------------------------------ Net investment income (loss) (d) $0.00(w) $0.03 $(0.01) $(0.01) $(0.03) $(0.05) Net realized and unrealized gain (loss) on investments and foreign currency 0.80 1.44 1.30 1.36 (1.87) (2.86) - ------------------------------------------------------------------------------------------------------------------------------ Total from investment operations $0.80 $1.47 $1.29 $1.35 $(1.90) $(2.91) - ------------------------------------------------------------------------------------------------------------------------------ LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ------------------------------------------------------------------------------------------------------------------------------ From net investment income $(0.04) $(0.00)(w) $-- $-- $-- $-- - ------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $12.82 $12.06 $10.59 $9.30 $7.95 $9.85 - ------------------------------------------------------------------------------------------------------------------------------ Total return (%) (r)(s)(t) 6.62(n) 13.90 13.87 16.98(j) (19.29) (22.81) - ------------------------------------------------------------------------------------------------------------------------------ RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ------------------------------------------------------------------------------------------------------------------------------ Expenses before expense reductions (f) 2.15(a) 2.19 2.17 2.20 2.09 2.12 Expenses after expense reductions (f) 1.95(a) 1.95 1.95 1.89 1.85 1.87 Net investment income (loss) 0.06(a) 0.23 (0.11) (0.07) (0.34) (0.47) Portfolio turnover 24 48 59 59 48 69 Net assets at end of period (000 Omitted) $1,188 $790 $659 $466 $697 $1,088 - ------------------------------------------------------------------------------------------------------------------------------ SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEARS ENDED 9/30 ENDED ----------------------------------------------------------------- CLASS I 3/31/06 2005 2004 2003 2002 2001 (UNAUDITED) Net asset value, beginning of period $12.43 $10.90 $9.56 $8.15 $10.06 $13.03 - ------------------------------------------------------------------------------------------------------------------------------ INCOME (LOSS) FROM INVESTMENT OPERATIONS - ------------------------------------------------------------------------------------------------------------------------------ Net investment income (d) $0.07 $0.15 $0.09 $0.08 $0.07 $0.06 Net realized and unrealized gain (loss) on investments and foreign currency 0.81 1.47 1.34 1.40 (1.92) (2.91) - ------------------------------------------------------------------------------------------------------------------------------ Total from investment operations $0.88 $1.62 $1.43 $1.48 $(1.85) $(2.85) - ------------------------------------------------------------------------------------------------------------------------------ LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ------------------------------------------------------------------------------------------------------------------------------ From net investment income $(0.14) $(0.09) $(0.09) $(0.07) $(0.06) $(0.12) - ------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $13.17 $12.43 $10.90 $9.56 $8.15 $10.06 - ------------------------------------------------------------------------------------------------------------------------------ Total return (%) (r)(s) 7.16(n) 14.94 14.98 18.22(j) (18.53) (22.05) - ------------------------------------------------------------------------------------------------------------------------------ RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ------------------------------------------------------------------------------------------------------------------------------ Expenses before expense reductions (f) 1.15(a) 1.19 1.17 1.22 1.09 1.12 Expenses after expense reductions (f) 0.95(a) 0.95 0.95 0.91 0.85 0.87 Net investment income 1.05(a) 1.23 0.89 0.92 0.65 0.52 Portfolio turnover 24 48 59 59 48 69 Net assets at end of period (000 Omitted) $36,655 $34,200 $29,693 $25,809 $27,658 $38,108 - ------------------------------------------------------------------------------------------------------------------------------ Any redemption fees charged by the fund during the 2004 and 2005 fiscal years resulted in a per share impact of less than $0.01. (a) Annualized. (d) Per share data are based on average shares outstanding. (f) Ratios do not reflect reductions from fees paid indirectly. (j) The fund's net asset value and total return calculation include proceeds received on March 26, 2003 for the partial payment of a non-recurring litigation settlement from Cendant Corporation, recorded as a realized gain on investment transactions. The proceeds resulted in an increase in the net asset value of $0.06 per share based on shares outstanding on the day the proceeds were received. Excluding the effect of this payment from the ending net asset value per share, the Class A, Class B, Class C, and Class I total returns for the year ended September 30, 2003 would have been lower by approximately 0.73%, 0.74%, 0.74%, and 0.72%, respectively. (n) Not annualized. (r) Certain expenses have been reduced without which performance would have been lower. (s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower. (t) Total returns do not include any applicable sales charges. (w) Per share amount was less than $0.01. SEE NOTES TO FINANCIAL STATEMENTS NOTES TO FINANCIAL STATEMENTS (unaudited) (1) BUSINESS AND ORGANIZATION MFS(R) Union Standard(R) Equity Fund (the fund) is a series of MFS Series Trust XI (the trust). The trust is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as an open-end management investment company. (2) SIGNIFICANT ACCOUNTING POLICIES GENERAL - The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The fund can invest in foreign securities. Investments in foreign securities are vulnerable to the effects of changes in the relative values of the local currency and the U.S. dollar and to the effects of changes in each country's legal, political, and economic environment. INVESTMENT VALUATIONS - Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price as reported by an independent pricing service on the market or exchange on which they are primarily traded. For securities for which there were no sales during the day, equity securities are generally valued at the last quoted bid price as reported by an independent pricing service on the market or exchange on which they are primarily traded. Short-term instruments with a maturity at issuance of 365 days or less are generally valued at amortized cost, which approximates market value. Securities and other assets generally valued on the basis of information from an independent pricing service may also be valued on the basis of information from brokers and dealers. When pricing-service information or market quotations are not readily available, securities are priced at fair value as determined under the direction of the Board of Trustees. REPURCHASE AGREEMENTS - The fund may enter into repurchase agreements with institutions that the fund's investment adviser has determined are creditworthy. Each repurchase agreement is recorded at cost. The fund requires that the securities collateral in a repurchase transaction be transferred to the custodian in a manner sufficient to enable the fund to obtain those securities in the event of a default under the repurchase agreement. The fund monitors, on a daily basis, the value of the collateral to ensure that its value, including accrued interest, is greater than amounts owed to the fund under each such repurchase agreement. The fund, along with other affiliated entities of Massachusetts Financial Services Company (MFS), may utilize a joint trading account for the purpose of entering into one or more repurchase agreements. SHORT TERM FEES - For purchases made on or after July 1, 2004 and before April 1, 2005, the fund charged a 2% redemption fee (which was retained by the fund) on proceeds from Class A, Class B, Class C, and Class I shares redeemed or exchanged within 5 business days following their acquisition (either by purchase or exchange). Effective April 1, 2005, the fund no longer charges a redemption fee. See the fund's prospectus for details. Any redemption fees charged are accounted for as an addition to paid-in capital. INVESTMENT TRANSACTIONS AND INCOME - Investment transactions are recorded on the trade date. Interest income is recorded on the accrual basis. All premium and discount is amortized or accreted for financial statement purposes in accordance with U.S. generally accepted accounting principles. All discount is accreted for tax reporting purposes as required by federal income tax regulations. Dividends received in cash are recorded on the ex-dividend date. Certain dividends from foreign securities will be recorded when the fund is informed of the dividend if such information is obtained subsequent to the ex- dividend date. Dividend and interest payments received in additional securities are recorded on the ex-dividend or ex-interest date in an amount equal to the value of the security on such date. The fund may receive proceeds from litigation settlements involving its portfolio holdings. Any proceeds received are reflected in realized gain/loss in the Statement of Operations, or in unrealized gain/loss if the security is still held by the fund. FEES PAID INDIRECTLY - The fund's custody fee is reduced according to an arrangement that measures the value of cash deposited with the custodian by the fund. During the six months ended March 31, 2006, the fund's custodian fees were reduced by $1,451 under this arrangement. This amount is shown as a reduction of total expenses on the Statement of Operations. The fund has entered into a commission recapture agreement, under which certain brokers will credit the fund a portion of the commissions generated, to offset certain expenses of the fund. For the six months ended March 31, 2006, the fund did not receive any credits under this agreement. Effective January 1, 2006, the commission recapture agreement was terminated. TAX MATTERS AND DISTRIBUTIONS - The fund intends to continue to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. Accordingly, no provision for federal income tax is required in the financial statements. Foreign taxes, if any, have been accrued by the fund in the accompanying financial statements. Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future. Distributions in excess of net investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from differences in the recognition or classification of income for financial statement and tax purposes. Book/tax differences primarily relate to wash sale loss deferrals and non- taxable distributions. The tax character of distributions made during the current period will be determined at fiscal year end. The tax character of distributions declared to shareholders is as follows: SEPTEMBER 30, 2005 SEPTEMBER 30, 2004 Ordinary income (including any short-term capital gains) $294,991 $270,063 The federal tax cost and the tax basis components of distributable earnings were as follows: AS OF MARCH 31, 2006 Cost of investments $41,068,950 ----------------------------------------------------------- Gross appreciation $10,379,179 Gross depreciation (1,311,544) ----------------------------------------------------------- Net unrealized appreciation (depreciation) $9,067,635 AS OF SEPTEMBER 30, 2006 Undistributed ordinary income $487,325 Capital loss carryforwards (9,434,416) Net unrealized appreciation (depreciation) 7,496,734 The aggregate cost above includes prior fiscal year end tax adjustments. As of September 30, 2005, the fund had available capital loss carryforwards to offset future realized gains. Such losses expire as follows: September 30, 2010 $(3,259,471) September 30, 2011 (5,556,028) September 30, 2012 (618,917) ----------------------------------------------------------- Total $(9,434,416) MULTIPLE CLASSES OF SHARES OF BENEFICIAL INTEREST - The fund offers multiple classes of shares, which differ in their respective distribution and service fees. All shareholders bear the common expenses of the fund based on daily net assets of each class, without distinction between share classes. Dividends are declared separately for each class. Differences in per share dividend rates are generally due to differences in separate class expenses. Class B shares will convert to Class A shares approximately eight years after purchase. (3) TRANSACTIONS WITH AFFILIATES INVESTMENT ADVISER - The fund has an investment advisory agreement with Massachusetts Financial Services Company (MFS) to provide overall investment advisory and administrative services, and general office facilities. The management fee is computed daily and paid monthly at an annual rate of 0.65% of the fund's average daily net assets. The investment adviser has contractually agreed to pay a portion of the fund's operating expenses, exclusive of management, distribution and service, and certain other fees and expenses, such that operating expenses do not exceed 0.30% annually of the fund's average daily net assets. This contractual fee arrangement will continue until February 1, 2007. For the six months ended March 31, 2006, this reduction amounted to $48,231 and is reflected as a reduction of total expenses in the Statement of Operations. DISTRIBUTOR - MFS Fund Distributors, Inc. (MFD), a wholly owned subsidiary of MFS, as distributor, received $3,045 for the six months ended March 31, 2006, as its portion of the initial sales charge on sales of Class A shares of the fund. The Board of Trustees has adopted a distribution plan for certain class shares pursuant to Rule 12b-1 of the Investment Company Act of 1940. The fund's distribution plan provides that the fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries. Distribution Fee Plan Table: TOTAL ANNUAL DISTRIBUTION DISTRIBUTION SERVICE DISTRIBUTION EFFECTIVE AND SERVICE FEE RATE FEE RATE PLAN(1) RATE(2) FEE Class A 0.10% 0.25% 0.35% 0.35% $17,744 Class B 0.75% 0.25% 1.00% 1.00% 10,500 Class C 0.75% 0.25% 1.00% 1.00% 4,191 - -------------------------------------------------------------------------------------------------------- Total Distribution and Service Fees $32,435 (1) In accordance with the distribution plan for certain classes, the fund pays distribution and/or service fees up to these annual percentage rates of each class' average daily net assets. (2) The annual effective rates represent actual fees incurred under the distribution plan for the six months ended March 31, 2006 based on each class' average daily net assets. Certain Class A and Class C shares are subject to a contingent deferred sales charge in the event of a shareholder redemption within 12 months of purchase. Class B shares are subject to a contingent deferred sales charge in the event of a shareholder redemption within six years of purchase. All contingent deferred sales charges are paid to MFD and during the six months ended March 31, 2006, were as follows: AMOUNT Class A $11 Class B 1,227 Class C 208 SHAREHOLDER SERVICING AGENT - The fund pays a portion of shareholder servicing costs to MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS. MFSC receives a fee from the fund, for its services as shareholder servicing agent, set periodically under the supervision of the fund's Board of Trustees. For the six months ended March 31, 2006, the fee was $23,149, which equated to 0.0960% annually of the fund's average daily net assets. MFSC also receives payment from the fund for out-of-pocket and sub-accounting expenses paid by MFSC on behalf of the fund. For the six months ended March 31, 2006, these costs amounted to $3,063. ADMINISTRATOR - MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to certain funds for which MFS acts as investment adviser. Under an administrative services agreement, the funds may partially reimburse MFS the costs incurred to provide these services, subject to review and approval by the Board of Trustees. Each fund is charged a fixed amount plus a fee based on calendar year average net assets. Effective July 1, 2005, the fund's annual fixed amount is $10,000. The administrative services fee incurred for the six months ended March 31, 2006 was equivalent to an annual effective rate of 0.0296% of the fund's average daily net assets. TRUSTEES' AND OFFICERS' COMPENSATION - The fund pays compensation to Independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. The fund does not pay compensation directly to Trustees who are officers of the investment adviser, or to officers of the fund, all of whom receive remuneration for their services to the fund from MFS. Certain officers and Trustees of the fund are officers or directors of MFS, MFD, and MFSC. OTHER - This fund and certain other MFS funds (the funds) have entered into a services agreement (the Agreement) which provides for payment of fees by the funds to Tarantino LLC in return for the provision of services of an Independent Chief Compliance Officer (ICCO) for the funds. The ICCO is an officer of the funds and the sole member of Tarantino LLC. The funds can terminate the Agreement with Tarantino LLC at any time under the terms of the Agreement. For the six months ended March 31, 2006, the fee paid to Tarantino LLC was $197. MFS has agreed to reimburse the fund for a portion of the payments made by the funds to Tarantino LLC in the amount of $163, which is shown as a reduction of total expenses in the Statement of Operations. Additionally, MFS has agreed to bear all expenses associated with office space, other administrative support, and supplies provided to the ICCO. (4) PORTFOLIO SECURITIES Purchases and sales of investments, other than U.S. government securities, purchased option transactions, and short-term obligations, aggregated $11,866,551 and $11,375,231, respectively. (5) SHARES OF BENEFICIAL INTEREST The fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in fund shares were as follows: SIX MONTHS ENDED YEAR ENDED MARCH 31, 2006 SEPTEMBER 30, 2005 SHARES AMOUNT SHARES AMOUNT Shares sold Class A 136,324 $1,719,740 275,526 $3,268,191 Class B 13,616 168,393 48,372 567,795 Class C 35,223 445,934 21,507 252,006 Class I 5,481 70,647 7,633 91,490 - ------------------------------------------------------------------------------ 190,644 $2,404,714 353,038 $4,179,482 Shares issued to shareholders in reinvestment of distributions Class A 6,748 $84,887 3,456 $40,440 Class B 134 1,667 -- -- Class C 131 1,617 8 88 Class I 26,578 336,205 21,537 253,272 - ------------------------------------------------------------------------------ 33,591 $424,376 25,001 $293,800 Shares reacquired Class A (144,584) $(1,824,848) (198,667) $(2,345,095) Class B (23,039) (287,443) (86,498) (1,014,404) Class C (8,244) (102,500) (18,115) (209,726) Class I (334) (4,193) (2,811) (33,854) - ------------------------------------------------------------------------------ (176,201) $(2,218,984) (306,091) $(3,603,079) Net change Class A (1,512) $(20,221) 80,315 $963,536 Class B (9,289) (117,383) (38,126) (446,609) Class C 27,110 345,051 3,400 42,368 Class I 31,725 402,659 26,359 310,908 - ------------------------------------------------------------------------------ 48,034 $610,106 71,948 $870,203 (6) LINE OF CREDIT The fund and other affiliated funds participate in a $1 billion unsecured line of credit provided by a syndication of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, at a rate equal to the Federal Reserve funds rate plus 0.35%. In addition, a commitment fee, based on the average daily, unused portion of the line of credit, is allocated among the participating funds at the end of each calendar quarter. The commitment fee allocated to the fund for the six months ended March 31, 2006 was $158, and is included in miscellaneous expense on the Statement of Operations. The fund had no significant borrowings during the six months ended March 31, 2006. BOARD REVIEW OF INVESTMENT ADVISORY AGREEMENT A discussion regarding the Board's most recent review and renewal of the Fund's investment advisory agreement is available by clicking on the fund's name under "Select a fund" on the MFS Web site (mfs.com). PROXY VOTING POLICIES AND INFORMATION A general description of the MFS funds' proxy voting policies and procedures is available without charge, upon request, by calling 1-800-225-2606, by visiting the Proxy Voting section of mfs.com or by visiting the SEC's Web site at http://www.sec.gov. Information regarding how the fund voted proxies relating to portfolio securities during the most recent twelve-month period ended June 30 is available without charge by visiting the Proxy Voting section of mfs.com or by visiting the SEC's Web site at http://www.sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The trust will file a complete schedule of portfolio holdings with the Securities and Exchange Commission (the Commission) for the first and third quarters of each fiscal year on Form N-Q. The trust's Form N-Q may be reviewed and copied at the: Public Reference Room Securities and Exchange Commission 100 F Street, NE Room 1580 Washington, D.C. 20549 Information on the operation of the Public Reference Room may be obtained by calling the Commission at 1-202-551-5850. The trust's Form N-Q is available on the EDGAR database on the Commission's Internet Web site at http://www.sec.gov, and copies of this information may be obtained, upon payment of a duplicating fee, by electronic request at the following e-mail address: publicinfo@sec.gov or by writing the Public Reference Section at the above address. A shareholder can also obtain the quarterly portfolio holdings report at mfs.com. CONTACT INFORMATION INVESTOR SERVICE Write to us at: MFS Service Center, Inc. P.O. Box 55824 Boston, MA 02205-5824 Type of Information Phone number Hours, Eastern Time - -------------------------------------------------------------------------------- General information 1-800-225-2606 8 a.m. to 8 p.m., any business day - -------------------------------------------------------------------------------- Speech- or hearing-impaired 1-800-637-6576 9 a.m. to 5 p.m., any business day - -------------------------------------------------------------------------------- Shares prices, account 1-800-MFS-TALK balances exchanges (1-800-637-8255) 24 hours a day, 365 days a or stock and bond outlooks touch-tone required year - -------------------------------------------------------------------------------- M F S (SM) INVESTMENT MANAGEMENT(R) MFS Investment Management(R) MFS(R) investment products are offered through MFS Fund Distributors, Inc., 500 Boylston Street, Boston, MA 02116. UNE-SEM-5/06 1M MFS(R) MID CAP VALUE FUND 3/31/06 SEMIANNUAL REPORT - --------------------------------------------------- LETTER FROM THE CEO 1 - --------------------------------------------------- PORTFOLIO COMPOSITION 2 - --------------------------------------------------- EXPENSE TABLE 3 - --------------------------------------------------- PORTFOLIO OF INVESTMENTS 5 - --------------------------------------------------- FINANCIAL STATEMENTS 9 - --------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 22 - --------------------------------------------------- BOARD REVIEW OF INVESTMENT ADVISORY AGREEMENT 32 - --------------------------------------------------- PROXY VOTING POLICIES AND INFORMATION 32 - --------------------------------------------------- QUARTERLY PORTFOLIO DISCLOSURE 32 - --------------------------------------------------- CONTACT INFORMATION BACK COVER - --------------------------------------------------- THE REPORT IS PREPARED FOR THE GENERAL INFORMATION OF SHAREHOLDERS. IT IS INTENDED FOR DISTRIBUTION TO PROSPECTIVE INVESTORS ONLY WHEN PRECEDED OR ACCOMPANIED BY A CURRENT PROSPECTUS. M F S(SM) INVESTMENT MANAGEMENT(R) LETTER FROM THE CEO [Photo of Robert J. Manning] Dear Shareholders, It has been said that change is the only constant in life. As investors have seen, that theme is still accurate today as we recently have experienced shifting economic cycles because of natural disasters and political instability around the globe. Markets worldwide have fluctuated in the past year as devastating hurricanes had a dramatic effect on the international economy, particularly on oil prices. We witnessed political unrest in the Middle East, highlighted by instability in Iraq, and in Africa, the usually stable Nigeria also experienced violence. As a result, energy prices have bounced up and down, with crude oil prices at one point topping a record $70 per barrel. Such cycles are not uncommon and in fact have almost become the norm in our everyday lives. What does all of this mean to you as an investor? In times like these, it helps to know that you're working with a seasoned investment professional who has experience to guide you through difficult times. At MFS(R), we believe our investment management team has the knowledge and confidence to navigate through difficult cycles and at the same time see through adversity to find investment opportunities for our clients and shareholders. Our investment management process, honed over 80 years, combines a unique concept of teamwork with our unwavering focus on the long term. We firmly believe that the best way to realize long-term financial goals - be it a college education, a comfortable retirement, or a secure family legacy - is to follow a three-pronged approach that focuses on longer time horizons. Allocate holdings across the major asset classes - including stocks, bonds, and cash. Diversify within each class to take advantage of different market segments and investing styles. Rebalance assets regularly to maintain a desired asset allocation. Of course, these strategies cannot guarantee a profit or protect against a loss. This long-term approach requires diligence and patience, two traits that in our experience are essential to capitalizing on the many opportunities the financial markets can offer - through both up and down economic cycles. Respectfully, /s/ Robert J. Manning Robert J. Manning Chief Executive Officer and Chief Investment Officer MFS Investment Management(R) May 15, 2006 The opinions expressed in this letter are those of MFS, and no forecasts can be guaranteed. PORTFOLIO COMPOSITION PORTFOLIO STRUCTURE Stocks 99.0% Cash & Other Net Assets 1.0% TOP 10 HOLDINGS GlobalSantaFe Corp. 3.0% ------------------------------------------------ McAfee, Inc. 2.7% ------------------------------------------------ Nortel Networks Corp. 2.7% ------------------------------------------------ Investors Financial Services Corp. 2.6% ------------------------------------------------ PETsMART, Inc. 2.5% ------------------------------------------------ Endurance Specialty Holdings, Ltd. 2.5% ------------------------------------------------ Nalco Holding Co. 2.2% ------------------------------------------------ Owens-Illinois, Inc. 2.2% ------------------------------------------------ Williams Cos., Inc. 2.1% ------------------------------------------------ Bowater, Inc. 2.0% ------------------------------------------------ EQUITY SECTORS Financial Services 25.0% ------------------------------------------------ Technology 12.3% ------------------------------------------------ Energy 11.5% ------------------------------------------------ Utilities & Communications 9.1% ------------------------------------------------ Basic Materials 7.9% ------------------------------------------------ Health Care 7.1% ------------------------------------------------ Retailing 6.8% ------------------------------------------------ Autos & Housing 6.7% ------------------------------------------------ Leisure 5.2% ------------------------------------------------ Transportation 4.0% ------------------------------------------------ Consumer Staples 2.5% ------------------------------------------------ Industrial Goods & Services 0.9% ------------------------------------------------ Percentages are based on net assets as of 3/31/06. The portfolio is actively managed, and current holdings may be different. EXPENSE TABLE FUND EXPENSES BORNE BY THE SHAREHOLDERS DURING THE PERIOD, OCTOBER 1, 2005 THROUGH MARCH 31, 2006. As a shareholder of the fund, you incur two types of costs: (1) transaction costs, including sales charges (loads) on certain purchase or redemption payments and redemption fees on certain exchanges and redemptions, and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in the fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 invested at the beginning of the period and held for the entire period October 1, 2005 through March 31, 2006. ACTUAL EXPENSES The first line for each share class in the following table provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number in the first line under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The second line for each share class in the following table provides information about hypothetical account values and hypothetical expenses based on the fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption fees. Therefore, the second line for each share class in the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. - ------------------------------------------------------------------------------- Expenses Paid During Annualized Beginning Ending Period(p) Share Expense Account Value Account Value 10/01/05- Class Ratio 10/01/05 3/31/06 3/31/06 - -------------------------------------------------------------------------------- Actual 1.34% $1,000.00 $1,065.80 $6.90 A ------------------------------------------------------------------------ Hypothetical (h) 1.34% $1,000.00 $1,018.25 $6.74 - -------------------------------------------------------------------------------- Actual 1.99% $1,000.00 $1,061.60 $10.23 B ------------------------------------------------------------------------- Hypothetical (h) 1.99% $1,000.00 $1,015.01 $10.00 - -------------------------------------------------------------------------------- Actual 1.99% $1,000.00 $1,062.30 $10.23 C ------------------------------------------------------------------------ Hypothetical (h) 1.99% $1,000.00 $1,015.01 $10.00 - -------------------------------------------------------------------------------- Actual 0.99% $1,000.00 $1,067.10 $5.10 I ------------------------------------------------------------------------ Hypothetical (h) 0.99% $1,000.00 $1,020.00 $4.99 - -------------------------------------------------------------------------------- Actual 1.49% $1,000.00 $1,064.60 $7.67 R ------------------------------------------------------------------------ Hypothetical (h) 1.49% $1,000.00 $1,017.50 $7.49 - -------------------------------------------------------------------------------- Actual 2.09% $1,000.00 $1,061.60 $10.74 R1 ------------------------------------------------------------------------ Hypothetical (h) 2.09% $1,000.00 $1,014.51 $10.50 - -------------------------------------------------------------------------------- Actual 1.74% $1,000.00 $1,063.70 $8.95 R2 ------------------------------------------------------------------------ Hypothetical (h) 1.74% $1,000.00 $1,016.26 $8.75 - -------------------------------------------------------------------------------- Actual 1.64% $1,000.00 $1,064.30 $8.44 R3 ------------------------------------------------------------------------ Hypothetical (h) 1.64% $1,000.00 $1,016.75 $8.25 - -------------------------------------------------------------------------------- Actual 1.39% $1,000.00 $1,065.00 $7.16 R4 ------------------------------------------------------------------------ Hypothetical (h) 1.39% $1,000.00 $1,018.00 $6.99 - -------------------------------------------------------------------------------- Actual 1.09% $1,000.00 $1,066.40 $5.62 R5 ------------------------------------------------------------------------ Hypothetical (h) 1.09% $1,000.00 $1,019.50 $5.49 - -------------------------------------------------------------------------------- Actual 1.59% $1,000.00 $1,063.50 $8.18 529A ------------------------------------------------------------------------ Hypothetical (h) 1.59% $1,000.00 $1,017.00 $8.00 - -------------------------------------------------------------------------------- Actual 2.24% $1,000.00 $1,060.60 $11.51 529B ------------------------------------------------------------------------ Hypothetical (h) 2.24% $1,000.00 $1,013.76 $11.25 - -------------------------------------------------------------------------------- Actual 2.24% $1,000.00 $1,060.40 $11.51 529C ------------------------------------------------------------------------ Hypothetical (h) 2.24% $1,000.00 $1,013.76 $11.25 - -------------------------------------------------------------------------------- (h) 5% class return per year before expenses. (p) Expenses paid is equal to each class' annualized expense ratio, as shown above, multiplied by the average account value over the period, multiplied by the number of days in the period, divided by the number of days in the year. Expenses paid do not include any applicable sales charges (loads) or redemption fees. If these transaction costs had been included, your costs would have been higher. PORTFOLIO OF INVESTMENTS (unaudited) - 3/31/06 The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes. Common Stocks - 99.0% - --------------------------------------------------------------------------------------------------- ISSUER SHARES/PAR VALUE ($) - --------------------------------------------------------------------------------------------------- Automotive- 1.0% - --------------------------------------------------------------------------------------------------- Johnson Controls, Inc. 100,000 $ 7,593,000 - --------------------------------------------------------------------------------------------------- Banks & Credit Companies - 14.4% - --------------------------------------------------------------------------------------------------- BankUnited Financial Corp., "A" 160,000 $ 4,326,400 Commerce Bancorp, Inc. 310,000 11,361,500 Compass Bancshares, Inc. 175,000 8,856,750 First Horizon National Corp. 220,000 9,163,000 Investors Financial Services Corp. 450,000 21,091,500 Marshall & Ilsley Corp. 43,500 1,895,730 Mercantile Bankshares Corp. 200,000 7,690,000 North Fork Bancorporation, Inc. 300,000 8,649,000 PNC Financial Services Group, Inc. 180,000 12,115,800 Sovereign Bancorp, Inc. 550,000 12,050,500 TCF Financial Corp. 275,000 7,081,250 Zions Bancorporation 125,000 10,341,250 ------------ $114,622,680 - --------------------------------------------------------------------------------------------------- Brokerage & Asset Managers - 2.5% - --------------------------------------------------------------------------------------------------- Mellon Financial Corp. 300,000 $ 10,680,000 Waddell & Reed Financial, Inc., "A" 400,000 9,240,000 ------------ $ 19,920,000 - --------------------------------------------------------------------------------------------------- Chemicals - 2.2% - --------------------------------------------------------------------------------------------------- Nalco Holding Co. (n) 1,000,000 $ 17,700,000 - --------------------------------------------------------------------------------------------------- Computer Software - 6.1% - --------------------------------------------------------------------------------------------------- Check Point Software Technologies Ltd. (n) 300,000 $ 6,006,000 Compuware Corp. (n) 1,000,000 7,830,000 McAfee, Inc. (n) 900,000 21,897,000 TIBCO Software, Inc. (n) 1,500,000 12,540,000 ------------ $ 48,273,000 - --------------------------------------------------------------------------------------------------- Computer Software - Systems - 1.3% - --------------------------------------------------------------------------------------------------- Sun Microsystems, Inc. (n) 2,000,000 $ 10,260,000 - --------------------------------------------------------------------------------------------------- Construction - 2.9% - --------------------------------------------------------------------------------------------------- D.R. Horton, Inc. 400,000 $ 13,288,000 Pulte Homes, Inc. 250,000 9,605,000 ------------ $ 22,893,000 - --------------------------------------------------------------------------------------------------- Consumer Goods & Services - 2.5% - --------------------------------------------------------------------------------------------------- Estee Lauder Cos., Inc., "A" 385,000 $ 14,318,150 Scotts Miracle-Gro Co. 130,000 5,948,800 ------------ $ 20,266,950 - --------------------------------------------------------------------------------------------------- Containers - 3.7% - --------------------------------------------------------------------------------------------------- Owens-Illinois, Inc. (n) 999,850 $ 17,367,395 Smurfit-Stone Container Corp. (n) 900,000 12,213,000 ------------ $ 29,580,395 - --------------------------------------------------------------------------------------------------- Electrical Equipment - 0.9% - --------------------------------------------------------------------------------------------------- W.W. Grainger, Inc. 100,000 $ 7,535,000 - --------------------------------------------------------------------------------------------------- Electronics - 2.2% - --------------------------------------------------------------------------------------------------- Diebold, Inc. 68,700 $ 2,823,570 Novellus Systems, Inc. (n) 200,000 4,800,000 SanDisk Corp. (n) 175,000 10,066,000 ------------ $ 17,689,570 - --------------------------------------------------------------------------------------------------- Energy - Independent - 3.6% - --------------------------------------------------------------------------------------------------- Newfield Exploration Co. (n) 180,000 $ 7,542,000 Noble Energy, Inc. 300,000 13,176,000 Riata Energy, Inc. (a)(n) 500,000 7,625,000 ------------ $ 28,343,000 - --------------------------------------------------------------------------------------------------- Energy - Integrated - 1.8% - --------------------------------------------------------------------------------------------------- Amerada Hess Corp. 100,000 $ 14,240,000 - --------------------------------------------------------------------------------------------------- Food & Drug Stores - 0.8% - --------------------------------------------------------------------------------------------------- Kroger Co. 300,000 $ 6,108,000 - --------------------------------------------------------------------------------------------------- Forest & Paper Products - 2.0% - --------------------------------------------------------------------------------------------------- Bowater, Inc. 550,000 $ 16,269,000 - --------------------------------------------------------------------------------------------------- Furniture & Appliances - 2.8% - --------------------------------------------------------------------------------------------------- Tempur-Pedic International, Inc. (n) 850,000 $ 12,027,500 Tupperware Brands Corp. 500,000 10,295,000 ------------ $ 22,322,500 - --------------------------------------------------------------------------------------------------- General Merchandise - 2.2% - --------------------------------------------------------------------------------------------------- Family Dollar Stores, Inc. 229,500 $ 6,104,700 Federated Department Stores, Inc. 160,400 11,709,200 ------------ $ 17,813,900 - --------------------------------------------------------------------------------------------------- Health Maintenance Organizations - 2.8% - --------------------------------------------------------------------------------------------------- CIGNA Corp. 100,000 $ 13,062,000 Health Net, Inc. (n) 175,000 8,893,500 ------------ $ 21,955,500 - --------------------------------------------------------------------------------------------------- Insurance - 6.6% - --------------------------------------------------------------------------------------------------- Endurance Specialty Holdings Ltd. 600,000 $ 19,530,000 Genworth Financial, Inc., "A" 355,220 11,875,005 MGIC Investment Corp. 175,000 11,660,250 PartnerRe Ltd. 150,000 9,313,500 ------------ $ 52,378,755 - --------------------------------------------------------------------------------------------------- Leisure & Toys - 0.9% - --------------------------------------------------------------------------------------------------- Hasbro, Inc. 350,000 $ 7,385,000 - --------------------------------------------------------------------------------------------------- Medical & Health Technology & Services - 3.0% - --------------------------------------------------------------------------------------------------- HealthSouth Corp. (n) 1,900,000 $ 9,481,000 Tenet Healthcare Corp. (n) 2,000,000 14,760,000 ------------ $ 24,241,000 - --------------------------------------------------------------------------------------------------- Medical Equipment - 1.3% - --------------------------------------------------------------------------------------------------- Advanced Medical Optics, Inc. (n) 225,000 $ 10,494,000 - --------------------------------------------------------------------------------------------------- Natural Gas - Distribution - 0.7% - --------------------------------------------------------------------------------------------------- Energen Corp. 150,000 $ 5,250,000 - --------------------------------------------------------------------------------------------------- Natural Gas - Pipeline - 2.1% - --------------------------------------------------------------------------------------------------- Williams Cos., Inc. 800,000 $ 17,112,000 - --------------------------------------------------------------------------------------------------- Network & Telecom - 2.7% - --------------------------------------------------------------------------------------------------- Nortel Networks Corp. (n) 7,000,000 $ 21,350,000 - --------------------------------------------------------------------------------------------------- Oil Services- 6.1% - --------------------------------------------------------------------------------------------------- BJ Services Co. 250,000 $ 8,650,000 GlobalSantaFe Corp. 400,000 24,300,000 Pride International, Inc. (n) 250,000 7,795,000 Smith International, Inc. 200,000 7,792,000 ------------ $ 48,537,000 - --------------------------------------------------------------------------------------------------- Printing & Publishing - 4.3% - --------------------------------------------------------------------------------------------------- ADVO, Inc. 275,000 $ 8,800,000 Lee Enterprises, Inc. 300,000 9,987,000 New York Times Co., "A" 300,000 7,593,000 Washington Post Co., "B" 10,000 7,767,500 ------------ $ 34,147,500 - --------------------------------------------------------------------------------------------------- Railroad & Shipping - 2.1% - --------------------------------------------------------------------------------------------------- Norfolk Southern Corp. 200,000 $ 10,814,000 Overseas Shipholding Group, Inc. 125,000 5,991,250 ------------ $ 16,805,250 - --------------------------------------------------------------------------------------------------- Real Estate - 1.5% - --------------------------------------------------------------------------------------------------- DiamondRock Hospitality Co. 484,050 $ 6,684,730 Mills Corp. 190,000 5,320,000 ------------ $ 12,004,730 - --------------------------------------------------------------------------------------------------- Specialty Stores - 3.8% - --------------------------------------------------------------------------------------------------- Aeropostale, Inc. (n) 350,000 $ 10,556,000 PETsMART, Inc. 700,000 19,698,000 ------------ $ 30,254,000 - --------------------------------------------------------------------------------------------------- Telephone Services - 1.2% - --------------------------------------------------------------------------------------------------- CenturyTel, Inc. 150,000 $ 5,868,000 IDT Corp., "B" (n) 365,000 4,040,550 ------------ $ 9,908,550 - --------------------------------------------------------------------------------------------------- Trucking - 1.9% - --------------------------------------------------------------------------------------------------- CNF, Inc. 300,000 $ 14,982,000 - --------------------------------------------------------------------------------------------------- Utilities - Electric Power - 5.1% - --------------------------------------------------------------------------------------------------- AES Corp. (n) 407,100 $ 6,945,126 CMS Energy Corp. (n) 278,000 3,600,100 Constellation Energy Group, Inc. 75,000 4,103,250 FPL Group, Inc. 118,200 4,744,548 Northeast Utilities 410,000 8,007,300 NRG Energy, Inc. (n) 300,000 13,566,000 ------------ $ 40,966,324 - --------------------------------------------------------------------------------------------------- Total Common Stocks (Identified Cost, $739,110,404) $789,201,604 - --------------------------------------------------------------------------------------------------- Short-Term Obligations - 1.5% - --------------------------------------------------------------------------------------------------- Abbey National North America LLC, 4.84%, due 4/03/06, at Amortized Cost (y) $11,847,000 $ 11,843,814 - --------------------------------------------------------------------------------------------------- Total Investments (Identified Cost, $750,954,218) (k) $801,045,418 - --------------------------------------------------------------------------------------------------- Other Assets, Less Liabilities - (0.5)% (4,305,452) - --------------------------------------------------------------------------------------------------- Net Assets - 100.0% $796,739,966 - --------------------------------------------------------------------------------------------------- (a) SEC Rule 144A restriction. (k) As of March 31, 2006, the fund had one security that was fair valued, aggregating $7,625,000 and 1.0% of net assets in accordance with the policies adopted by the Board of Trustees. (n) Non-income producing security. (y) The rate shown represents an annualized yield at time of purchase. SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS Statement of Assets and Liabilities (unaudited) This statement represents your fund's balance sheet, which details the assets and liabilities composing the total value of the fund. AT 3/31/06 ASSETS - ------------------------------------------------------------------------------------------------------ Investments, at value (identified cost, $750,954,218) $801,045,418 Cash 404,215 Foreign currency, at value (identified cost, $22) 22 Receivable for investments sold 6,855,649 Receivable for fund shares sold 1,703,201 Dividends receivable 693,413 Receivable from investment adviser 68,389 - ------------------------------------------------------------------------------------------------------ Total assets $810,770,307 - ------------------------------------------------------------------------------------------------------ LIABILITIES - ------------------------------------------------------------------------------------------------------ Payable for investments purchased $12,956,177 Payable for fund shares reacquired 854,800 Payable to affiliates Management fee 16,457 Shareholder servicing costs 66,825 Distribution and service fees 6,607 Administrative services fee 246 Program manager fees 14 Retirement plan administration and services fees 36 Payable for independent trustees' compensation 1,886 Accrued expenses and other liabilities 127,293 - ------------------------------------------------------------------------------------------------------ Total liabilities $14,030,341 - ------------------------------------------------------------------------------------------------------ Net assets $796,739,966 - ------------------------------------------------------------------------------------------------------ NET ASSETS CONSIST OF: - ------------------------------------------------------------------------------------------------------ Paid-in capital $705,736,992 Unrealized appreciation (depreciation) on investments and translation of assets and liabilities in foreign currencies 50,091,200 Accumulated net realized gain (loss) on investments and foreign currency transactions 40,368,333 Undistributed net investment income 543,441 - ------------------------------------------------------------------------------------------------------ Net assets $796,739,966 - ------------------------------------------------------------------------------------------------------ Shares of beneficial interest outstanding 57,765,852 - ------------------------------------------------------------------------------------------------------ Statement of Assets and Liabilities (unaudited) - continued Class A shares - ------------------------------------------------------------------------------------------------------ Net assets $161,411,749 Shares outstanding 11,741,605 - ------------------------------------------------------------------------------------------------------ Net asset value per share $13.75 - ------------------------------------------------------------------------------------------------------ Offering price per share (100/94.25Xnet asset value per share) $14.59 - ------------------------------------------------------------------------------------------------------ Class B shares - ------------------------------------------------------------------------------------------------------ Net assets $108,082,866 Shares outstanding 8,114,247 - ------------------------------------------------------------------------------------------------------ Net asset value and offering price per share $13.32 - ------------------------------------------------------------------------------------------------------ Class C shares - ------------------------------------------------------------------------------------------------------ Net assets $44,869,095 Shares outstanding 3,366,768 - ------------------------------------------------------------------------------------------------------ Net asset value and offering price per share $13.33 - ------------------------------------------------------------------------------------------------------ Class I shares - ------------------------------------------------------------------------------------------------------ Net assets $468,562,065 Shares outstanding 33,526,029 - ------------------------------------------------------------------------------------------------------ Net asset value, offering price, and redemption price per share $13.98 - ------------------------------------------------------------------------------------------------------ Class R shares - ------------------------------------------------------------------------------------------------------ Net assets $7,386,648 Shares outstanding 539,970 - ------------------------------------------------------------------------------------------------------ Net asset value, offering price, and redemption price per share $13.68 - ------------------------------------------------------------------------------------------------------ Class R1 shares - ------------------------------------------------------------------------------------------------------ Net assets $535,361 Shares outstanding 40,231 - ------------------------------------------------------------------------------------------------------ Net asset value, offering price, and redemption price per share $13.31 - ------------------------------------------------------------------------------------------------------ Class R2 shares - ------------------------------------------------------------------------------------------------------ Net assets $1,599,680 Shares outstanding 119,771 - ------------------------------------------------------------------------------------------------------ Net asset value, offering price, and redemption price per share $13.36 - ------------------------------------------------------------------------------------------------------ Class R3 shares - ------------------------------------------------------------------------------------------------------ Net assets $2,147,621 Shares outstanding 158,135 - ------------------------------------------------------------------------------------------------------ Net asset value, offering price, and redemption price per share $13.58 - ------------------------------------------------------------------------------------------------------ Statement of Assets and Liabilities (unaudited) - continued Class R4 shares - ------------------------------------------------------------------------------------------------------ Net assets $186,175 Shares outstanding 13,547 - ------------------------------------------------------------------------------------------------------ Net asset value, offering price, and redemption price per share $13.74 - ------------------------------------------------------------------------------------------------------ Class R5 shares - ------------------------------------------------------------------------------------------------------ Net assets $57,964 Shares outstanding 4,203 - ------------------------------------------------------------------------------------------------------ Net asset value, offering price, and redemption price per share $13.79 - ------------------------------------------------------------------------------------------------------ Class 529A shares - ------------------------------------------------------------------------------------------------------ Net assets $1,259,278 Shares outstanding 92,710 - ------------------------------------------------------------------------------------------------------ Net asset value per share $13.58 - ------------------------------------------------------------------------------------------------------ Offering price per share (100/94.25Xnet asset value per share) $14.41 - ------------------------------------------------------------------------------------------------------ Class 529B shares - ------------------------------------------------------------------------------------------------------ Net assets $230,615 Shares outstanding 17,511 - ------------------------------------------------------------------------------------------------------ Net asset value and offering price per share $13.17 - ------------------------------------------------------------------------------------------------------ Class 529C shares - ------------------------------------------------------------------------------------------------------ Net assets $410,849 Shares outstanding 31,125 - ------------------------------------------------------------------------------------------------------ Net asset value and offering price per share $13.20 - ------------------------------------------------------------------------------------------------------ On sales of $50,000 or more, the offering price of Class A and Class 529A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, Class C, Class 529B, and Class 529C shares. SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS Statement of Operations (unaudited) This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations. SIX MONTHS ENDED 3/31/06 NET INVESTMENT INCOME - ------------------------------------------------------------------------------------------------------ Income Dividends $5,093,739 Interest 183,621 Foreign taxes withheld (3,750) - ------------------------------------------------------------------------------------------------------ Total investment income $5,273,610 - ------------------------------------------------------------------------------------------------------ Expenses Management fee $2,781,841 Distribution and service fees 1,077,618 Program manager fees 2,144 Shareholder servicing costs 539,866 Administrative services fee 38,362 Retirement plan administration and services fees 4,352 Independent trustees' compensation 10,018 Custodian fee 87,180 Shareholder communications 66,055 Auditing fees 14,090 Legal fees 8,169 Miscellaneous 147,165 - ------------------------------------------------------------------------------------------------------ Total expenses $4,776,860 - ------------------------------------------------------------------------------------------------------ Fees paid indirectly (42,772) Reduction of expenses by investment adviser (3,919) - ------------------------------------------------------------------------------------------------------ Net expenses $4,730,169 - ------------------------------------------------------------------------------------------------------ Net investment income $543,441 - ------------------------------------------------------------------------------------------------------ REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS - ------------------------------------------------------------------------------------------------------ Realized gain (loss) (identified cost basis) Investment transactions $41,114,818 Foreign currency transactions (4,256) - ------------------------------------------------------------------------------------------------------ Net realized gain (loss) on investments and foreign currency transactions $41,110,562 - ------------------------------------------------------------------------------------------------------ Change in unrealized appreciation (depreciation) Investments $7,390,944 Translation of assets and liabilities in foreign currencies (6) - ------------------------------------------------------------------------------------------------------ Net unrealized gain (loss) on investments and foreign currency translation $7,390,938 - ------------------------------------------------------------------------------------------------------ Net realized and unrealized gain (loss) on investments and foreign currency $48,501,500 - ------------------------------------------------------------------------------------------------------ Change in net assets from operations $49,044,941 - ------------------------------------------------------------------------------------------------------ SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS Statements of Changes in Net Assets These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions. SIX MONTHS ENDED YEAR ENDED 3/31/06 9/30/05 (UNAUDITED) CHANGE IN NET ASSETS - ------------------------------------------------------------------------------------------------------- FROM OPERATIONS - ------------------------------------------------------------------------------------------------------- Net investment income (loss) $543,441 $(197,326) Net realized gain (loss) on investments and foreign currency transactions 41,110,562 89,510,428 Net unrealized gain (loss) on investments and foreign currency translation 7,390,938 14,338,757 - ------------------------------------------------------------------------------------------------------- Change in net assets from operations $49,044,941 $103,651,859 - ------------------------------------------------------------------------------------------------------- DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions Class A $(16,161,417) $(8,797,219) Class B (12,599,704) (8,915,181) Class C (4,886,027) (2,709,307) Class I (44,424,812) (24,365,961) Class R (1,281,416) (230,955) Class R1 (50,206) -- Class R2 (41,349) -- Class R3 (184,488) (21,100) Class R4 (7,303) -- Class R5 (5,977) -- Class 529A (122,985) (65,333) Class 529B (23,073) (13,148) Class 529C (40,872) (16,670) - ------------------------------------------------------------------------------------------------------- Total distributions declared to shareholders $(79,829,629) $(45,134,874) - ------------------------------------------------------------------------------------------------------- Change in net assets from fund share transactions $127,483,094 $191,836,506 - ------------------------------------------------------------------------------------------------------- Redemption fees $-- $9 - ------------------------------------------------------------------------------------------------------- Total change in net assets $96,698,406 $250,353,500 - ------------------------------------------------------------------------------------------------------- NET ASSETS - ------------------------------------------------------------------------------------------------------- At beginning of period $700,041,560 $449,688,060 At end of period (including undistributed net investment income of $543,441 and $0, respectively) $796,739,966 $700,041,560 - ------------------------------------------------------------------------------------------------------- SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS Financial Highlights The financial highlights table is intended to help you understand the fund's financial performance for the semiannual period and the past 5 fiscal years (or life of a particular share class, if shorter). Certain information reflects financial results for a single fund share. The total returns in the table represent the rate by which an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period. SIX MONTHS YEARS ENDED 9/30 ENDED ----------------------------------------------------------------------- CLASS A 3/31/06 2005 2004 2003 2002 2001(c) (UNAUDITED) Net asset value, beginning of period $14.45 $13.13 $10.72 $8.56 $8.74 $10.00 - ------------------------------------------------------------------------------------------------------------------------------ INCOME (LOSS) FROM INVESTMENT OPERATIONS - ------------------------------------------------------------------------------------------------------------------------------ Net investment income (loss) (d) $0.01 $(0.01) $(0.02) $0.01 $0.02 $0.02 Net realized and unrealized gain (loss) on investments and foreign currency 0.88 2.56 2.43 2.15 (0.20) (1.28) - ------------------------------------------------------------------------------------------------------------------------------ Total from investment operations $0.89 $2.55 $2.41 $2.16 $(0.18) $(1.26) - ------------------------------------------------------------------------------------------------------------------------------ LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ------------------------------------------------------------------------------------------------------------------------------ From net investment income $-- $-- $-- $-- $(0.00)(w) $-- From net realized gain on investments and foreign currency transactions (1.59) (1.23) -- -- (0.00)(w) -- - ------------------------------------------------------------------------------------------------------------------------------ Total distributions declared to shareholders $(1.59) $(1.23) $-- $-- $(0.00)(w) $-- - ------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $13.75 $14.45 $13.13 $10.72 $8.56 $8.74 - ------------------------------------------------------------------------------------------------------------------------------ Total return (%) (r)(s)(t) 6.58(n) 20.11 22.48 25.23 (2.03) (12.60)(n) - ------------------------------------------------------------------------------------------------------------------------------ RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ------------------------------------------------------------------------------------------------------------------------------ Expenses before expense reductions (f) 1.34(a) 1.36 1.36 1.50 1.83 120.50(a) Expenses after expense reductions (f) 1.34(a) 1.35 1.34 1.34 1.37 1.00(a) Net investment income (loss) 0.09(a) (0.07) (0.17) 0.10 0.22 2.24(a) Portfolio turnover 55 126 128 158 113 66 Net assets at end of period (000 Omitted) $164,412 $142,972 $83,631 $47,603 $26,013 $262 - ------------------------------------------------------------------------------------------------------------------------------ SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEARS ENDED 9/30 ENDED -------------------------------------------------------------- CLASS B 3/31/06 2005 2004 2003 2002(i) (UNAUDITED) Net asset value, beginning of period $14.10 $12.91 $10.61 $8.53 $9.24 - ----------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ----------------------------------------------------------------------------------------------------------------------------- Net investment loss (d) $(0.04) $(0.10) $(0.10) $(0.05) $(0.04) Net realized and unrealized gain (loss) on investments and foreign currency 0.85 2.52 2.40 2.13 (0.67) - ----------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.81 $2.42 $2.30 $2.08 $(0.71) - ----------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ----------------------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $(1.23) $-- $-- $(0.00)(w) - ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.32 $14.10 $12.91 $10.61 $8.53 - ----------------------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s)(t) 6.16(n) 19.40 21.68 24.38 (7.67)(n) - ----------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ----------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 1.99(a) 2.01 2.01 2.14 2.48(a) Expenses after expense reductions (f) 1.99(a) 2.00 1.99 1.99 2.02(a) Net investment loss (0.56)(a) (0.73) (0.82) (0.54) (0.44)(a) Portfolio turnover 55 126 128 158 113 Net assets at end of period (000 Omitted) $108,083 $113,672 $88,348 $65,799 $44,390 - ----------------------------------------------------------------------------------------------------------------------------- SIX MONTHS YEARS ENDED 9/30 ENDED ------------------------------------------------------------- CLASS C 3/31/06 2005 2004 2003 2002(i) (UNAUDITED) Net asset value, beginning of period $14.10 $12.92 $10.61 $8.53 $9.24 - ----------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ----------------------------------------------------------------------------------------------------------------------------- Net investment loss (d) $(0.04) $(0.10) $(0.10) $(0.05) $(0.04) Net realized and unrealized gain (loss) on investments and foreign currency 0.86 2.51 2.41 2.13 (0.67) - ----------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.82 $2.41 $2.31 $2.08 $(0.71) - ----------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ----------------------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $(1.23) $-- $-- $(0.00)(w) - ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.33 $14.10 $12.92 $10.61 $8.53 - ----------------------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s)(t) 6.23(n) 19.30 21.77 24.38 (7.67)(n) - ----------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ----------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 1.99(a) 2.01 2.01 2.14 2.48(a) Expenses after expense reductions (f) 1.99(a) 2.00 1.99 1.99 2.02(a) Net investment loss (0.56)(a) (0.72) (0.82) (0.54) (0.46)(a) Portfolio turnover 55 126 128 158 113 Net assets at end of period (000 Omitted) $44,869 $42,162 $25,482 $16,369 $11,348 - ----------------------------------------------------------------------------------------------------------------------------- SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEARS ENDED 9/30 ENDED --------------------------------------------------------------- CLASS I 3/31/06 2005 2004 2003 2002(i) (UNAUDITED) Net asset value, beginning of period $14.65 $13.25 $10.80 $8.59 $9.24 - ----------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ----------------------------------------------------------------------------------------------------------------------------- Net investment income (d) $0.03 $0.04 $0.02 $0.04 $0.06 Net realized and unrealized gain (loss) on investments and foreign currency 0.89 2.59 2.45 2.17 (0.71) - ----------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.92 $2.63 $2.47 $2.21 $(0.65) - ----------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------- From net investment income $-- $-- $-- $-- $(0.00)(w) From net realized gain on investments and foreign currency transactions (1.59) (1.23) (0.02) -- (0.00)(w) - ----------------------------------------------------------------------------------------------------------------------------- Total distributions declared to shareholders $(1.59) $(1.23) $(0.02) $-- $(0.00)(w) - ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.98 $14.65 $13.25 $10.80 $8.59 - ----------------------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s) 6.71(n) 20.56 22.93 25.58 (6.89)(n) - ----------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ----------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 0.99(a) 1.01 1.01 1.16 1.48(a) Expenses after expense reductions (f) 0.99(a) 1.00 0.99 1.00 1.02(a) Net investment income 0.44(a) 0.28 0.18 0.43 0.99(a) Portfolio turnover 55 126 128 158 113 Net assets at end of period (000 Omitted) $468,562 $386,860 $249,118 $93,944 $4,655 - ----------------------------------------------------------------------------------------------------------------------------- SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEARS ENDED 9/30 ENDED -------------------------------------------- CLASS R 3/31/06 2005 2004 2003(i) (UNAUDITED) Net asset value, beginning of period $14.40 $13.11 $10.72 $9.11 - ---------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ---------------------------------------------------------------------------------------------------------------------------- Net investment (loss) (d) $(0.00)(w) $(0.02) $(0.04) $(0.00)(w) Net realized and unrealized gain (loss) on investments and foreign currency 0.87 2.54 2.44 1.61(g) - ---------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.87 $2.52 $2.40 $1.61 - ---------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ---------------------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $(1.23) $(0.01) $-- - ---------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.68 $14.40 $13.11 $10.72 - ---------------------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s) 6.46(n) 19.90 22.43 17.67(n) - ---------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ---------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 1.49(a) 1.52 1.52 1.65(a) Expenses after expense reductions (f) 1.49(a) 1.51 1.50 1.49(a) Net investment loss (0.05)(a) (0.18) (0.30) (0.06)(a) Portfolio turnover 55 126 128 158 Net assets at end of period (000 Omitted) $7,387 $10,761 $1,941 $260 - ---------------------------------------------------------------------------------------------------------------------------- SIX MONTHS YEAR ENDED ENDED CLASS R1 3/31/06 9/30/05(i) (UNAUDITED) Net asset value, beginning of period $14.09 $13.03 - -------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------------------- Net investment loss (d) $(0.05) $(0.06) Net realized and unrealized gain (loss) on investments and foreign currency 0.86 1.12(g) - -------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.81 $1.06 - -------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $-- - -------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.31 $14.09 - -------------------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s) 6.16(n) 8.14(n) - -------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 2.19(a) 2.21(a) Expenses after expense reductions (f) 2.09(a) 2.20(a) Net investment loss (0.68)(a) (0.83)(a) Portfolio turnover 55 126 Net assets at end of period (000 Omitted) $535 $313 - -------------------------------------------------------------------------------------------------------------------------- SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEAR ENDED ENDED CLASS R2 3/31/06 9/30/05(i) (UNAUDITED) Net asset value, beginning of period $14.11 $13.03 - ------------------------------------------------------------------------------------------------------------------ INCOME (LOSS) FROM INVESTMENT OPERATIONS - ------------------------------------------------------------------------------------------------------------------ Net investment loss (d) $(0.02) $(0.03) Net realized and unrealized gain (loss) on investments and foreign currency 0.86 1.11(g) - ------------------------------------------------------------------------------------------------------------------ Total from investment operations $0.84 $1.08 - ------------------------------------------------------------------------------------------------------------------ LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ------------------------------------------------------------------------------------------------------------------ From net realized gain on investments and foreign currency transactions $(1.59) $-- - ------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $13.36 $14.11 - ------------------------------------------------------------------------------------------------------------------ Total return (%) (r)(s) 6.37(n) 8.29(n) - ------------------------------------------------------------------------------------------------------------------ RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ------------------------------------------------------------------------------------------------------------------ Expenses before expense reductions (f) 1.89(a) 1.90(a) Expenses after expense reductions (f) 1.74(a) 1.89(a) Net investment loss (0.40)(a) (0.42)(a) Portfolio turnover 55 126 Net assets at end of period (000 Omitted) $1,600 $410 - ------------------------------------------------------------------------------------------------------------------ SIX MONTHS YEARS ENDED 9/30 ENDED ------------------------------- CLASS R3 3/31/06 2005 2004(i) (UNAUDITED) Net asset value, beginning of period $14.31 $13.06 $11.39 - --------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - --------------------------------------------------------------------------------------------------------------------- Net investment loss (d) $(0.02) $(0.06) $(0.06) Net realized and unrealized gain (loss) on investments and foreign currency 0.88 2.54 1.74(g) - --------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.86 $2.48 $1.68 - --------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - --------------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $(1.23) $(0.01) - --------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.58 $14.31 $13.06 - --------------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s) 6.43(n) 19.66 14.79(n) - --------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - --------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 1.74(a) 1.76 1.78(a) Expenses after expense reductions (f) 1.64(a) 1.75 1.76(a) Net investment loss (0.23)(a) (0.45) (0.62)(a) Portfolio turnover 55 126 128 Net assets at end of period (000 Omitted) $2,148 $1,218 $212 - --------------------------------------------------------------------------------------------------------------------- SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEAR ENDED ENDED CLASS R4 3/31/06 9/30/05(i) (UNAUDITED) Net asset value, beginning of period $14.45 $13.32 - ------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ------------------------------------------------------------------------------------------------------------- Net investment loss (d) $(0.01) $(0.00)(w) Net realized and unrealized gain (loss) on investments and foreign currency 0.89 1.13(g) - ------------------------------------------------------------------------------------------------------------- Total from investment operations $0.88 $1.13 - ------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $-- - ------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.74 $14.45 - ------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s) 6.50(n) 8.48(n) - ------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 1.39(a) 1.41(a) Expenses after expense reductions (f) 1.39(a) 1.40(a) Net investment loss (0.08)(a) (0.06)(a) Portfolio turnover 55 126 Net assets at end of period (000 Omitted) $186 $54 - ------------------------------------------------------------------------------------------------------------- SIX MONTHS YEAR ENDED ENDED CLASS R5 3/31/06 9/30/05(i) (UNAUDITED) Net asset value, beginning of period $14.48 $13.32 - -------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------- Net investment income (d) $0.02 $0.02 Net realized and unrealized gain (loss) on investments and foreign currency 0.88 1.14(g) - -------------------------------------------------------------------------------------------------------------- Total from investment operations $0.90 $1.16 - -------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $-- - -------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.79 $14.48 - -------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s) 6.64(n) 8.71(n) - -------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 1.09(a) 1.11(a) Expenses after expense reductions (f) 1.09(a) 1.10(a) Net investment income 0.34(a) 0.24(a) Portfolio turnover 55 126 Net assets at end of period (000 Omitted) $58 $54 - -------------------------------------------------------------------------------------------------------------- SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEARS ENDED 9/30 ENDED ------------------------------------------------------------- CLASS 529A3/31/06 2005 2004 2003 2002(i) (UNAUDITED) Net asset value, beginning of period $14.32 $13.05 $10.68 $8.55 $9.24 - ----------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ----------------------------------------------------------------------------------------------------------------------------- Net investment income (loss) (d) $(0.01) $(0.04) $(0.05) $(0.02) $0.01 Net realized and unrealized gain (loss) on investments and foreign currency 0.86 2.54 2.42 2.15 (0.70) - ----------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.85 $2.50 $2.37 $2.13 $(0.69) - ----------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ----------------------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $(1.23) $-- $-- $-- - ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.58 $14.32 $13.05 $10.68 $8.55 - ----------------------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s)(t) 6.35(n) 19.83 22.19 24.91 (7.47)(n) - ----------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ----------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 1.59(a) 1.61 1.62 1.75 2.08(a) Expenses after expense reductions (f) 1.59(a) 1.60 1.60 1.59 1.62(a) Net investment income (loss) (0.16)(a) (0.32) (0.42) (0.18) 0.50(a) Portfolio turnover 55 126 128 158 113 Net assets at end of period (000 Omitted) $1,259 $1,038 $643 $262 $7 - ----------------------------------------------------------------------------------------------------------------------------- SIX MONTHS YEARS ENDED 9/30 ENDED ------------------------------------------------------------- CLASS 529B3/31/06 2005 2004 2003 2002(i) (UNAUDITED) Net asset value, beginning of period $13.97 $12.84 $10.58 $8.52 $9.22 - ----------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ----------------------------------------------------------------------------------------------------------------------------- Net investment loss (d) $(0.05) $(0.13) $(0.13) $(0.08) $(0.00)(w) Net realized and unrealized gain (loss) on investments and foreign currency 0.84 2.49 2.39 2.14 (0.70) - ----------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.79 $2.36 $2.26 $2.06 $(0.70) - ----------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ----------------------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $(1.23) $-- $-- $-- - ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.17 $13.97 $12.84 $10.58 $8.52 - ----------------------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s)(t) 6.06(n) 19.01 21.36 24.18 (7.59)(n) - ----------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ----------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 2.24(a) 2.26 2.26 2.40 2.73(a) Expenses after expense reductions (f) 2.24(a) 2.25 2.24 2.24 2.27(a) Net investment loss (0.82)(a) (0.97) (1.07) (0.82) (0.20)(a) Portfolio turnover 55 126 128 158 113 Net assets at end of period (000 Omitted) $231 $174 $135 $59 $5 - ----------------------------------------------------------------------------------------------------------------------------- SEE NOTES TO FINANCIAL STATEMENTS Financial Highlights - continued SIX MONTHS YEARS ENDED 9/30 ENDED ------------------------------------------------------------- CLASS 529C3/31/06 2005 2004 2003 2002(i) (UNAUDITED) Net asset value, beginning of period 14.00 $12.86 $10.59 $8.52 $9.22 - ----------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ----------------------------------------------------------------------------------------------------------------------------- Net investment loss (d) $(0.05) $(0.13) $(0.13) $(0.08) $(0.00)(w) Net realized and unrealized gain (loss) on investments and foreign currency 0.84 2.50 2.40 2.15 (0.70) - ----------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.79 $2.37 $2.27 $2.07 $(0.70) - ----------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ----------------------------------------------------------------------------------------------------------------------------- From net realized gain on investments and foreign currency transactions $(1.59) $(1.23) $-- $-- $-- - ----------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $13.20 $14.00 $12.86 $10.59 $8.52 - ----------------------------------------------------------------------------------------------------------------------------- Total return (%) (r)(s)(t) 6.04(n) 19.06 21.44 24.30 (7.59)(n) - ----------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ----------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f) 2.24(a) 2.26 2.26 2.40 2.73(a) Expenses after expense reductions (f) 2.24(a) 2.25 2.24 2.24 2.27(a) Net investment loss (0.81)(a) (0.95) (1.06) (0.85) (0.20)(a) Portfolio turnover 55 126 128 158 113 Net assets at end of period (000 Omitted) $411 $353 $178 $44 $5 - ----------------------------------------------------------------------------------------------------------------------------- Any redemption fees charged by the fund during the 2004 and 2005 fiscal years resulted in a per share impact of less than $0.01. (a) Annualized. (c) For the period from the commencement of the fund's investment operations, August 31, 2001, through September 30, 2001. (d) Per share data are based on average shares outstanding. (f) Ratios do not reflect reductions from fees paid indirectly. (g) The per share amount is not in accordance with the net realized and unrealized gain/loss for the period because of the timing of sales of fund shares and the amount of per share realized and unrealized gains and losses at such time. (i) For the period from the class' inception, November 1, 2001 (Classes B, C, and I), December 31, 2002 (Class R), July 31, 2002 (Classes 529A, 529B, and 529C), October 31, 2003 (Class R3) and April 1, 2005 (Classes R1, R2, R4, and R5) through the stated period end. (n) Not annualized. (r) Certain expenses have been reduced without which performance would have been lower. (s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower. (t) Total returns do not include any applicable sales charges. (w) Per share amount was less than $0.01. SEE NOTES TO FINANCIAL STATEMENTS NOTES TO FINANCIAL STATEMENTS (unaudited) (1) BUSINESS AND ORGANIZATION MFS Mid Cap Value Fund (the fund) is a series of MFS Series Trust XI (the trust). The trust is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as an open- end management investment company. (2) SIGNIFICANT ACCOUNTING POLICIES GENERAL - The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The fund can invest in foreign securities, including securities of emerging market issuers. Investments in foreign securities are vulnerable to the effects of changes in the relative values of the local currency and the U.S. dollar and to the effects of changes in each country's legal, political, and economic environment. The markets of emerging markets countries are generally more volatile than the markets of developed countries with more mature economies. All of the risks of investing in foreign securities previously described are heightened when investing in emerging markets countries. INVESTMENT VALUATIONS - Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price as reported by an independent pricing service on the market or exchange on which they are primarily traded. For securities for which there were no sales during the day, equity securities are generally valued at the last quoted bid price as reported by an independent pricing service on the market or exchange on which they are primarily traded. Short-term instruments with a maturity at issuance of 365 days or less are generally valued at amortized cost, which approximates market value. Securities and other assets generally valued on the basis of information from an independent pricing service may also be valued on the basis of information from brokers and dealers. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars based upon exchange rates provided by an independent source. When pricing-service information or market quotations are not readily available, securities are priced at fair value as determined under the direction of the Board of Trustees. For example, in valuing securities that trade principally on foreign markets, events reasonably determined to be significant (such as certain movements in the U.S. securities market, or other regional and local developments) may occur between the time that foreign markets close (where the security is principally traded) and the fund's valuation time that may impact the value of securities traded in these foreign markets. In these cases, the fund may utilize information from an external vendor or other sources to adjust closing market prices of foreign equity securities to reflect what it believes to be the fair value of the securities as of the fund's valuation time. Fair valuation of foreign equity securities may occur frequently based on an assessment that events which occur on a fairly regular basis (such as U.S. market movements) are significant. REPURCHASE AGREEMENTS - The fund may enter into repurchase agreements with institutions that the fund's investment adviser has determined are creditworthy. Each repurchase agreement is recorded at cost. The fund requires that the securities collateral in a repurchase transaction be transferred to the custodian in a manner sufficient to enable the fund to obtain those securities in the event of a default under the repurchase agreement. The fund monitors, on a daily basis, the value of the collateral to ensure that its value, including accrued interest, is greater than amounts owed to the fund under each such repurchase agreement. The fund, along with other affiliated entities of Massachusetts Financial Services Company (MFS), may utilize a joint trading account for the purpose of entering into one or more repurchase agreements. FOREIGN CURRENCY TRANSLATION - Purchases and sales of foreign investments, income, and expenses are converted into U.S. dollars based upon currency exchange rates prevailing on the respective dates of such transactions. Gains and losses attributable to foreign currency exchange rates on sales of securities are recorded for financial statement purposes as net realized gains and losses on investments. Gains and losses attributable to foreign exchange rate movements on income and expenses are recorded for financial statement purposes as foreign currency transaction gains and losses. That portion of both realized and unrealized gains and losses on investments that results from fluctuations in foreign currency exchange rates is not separately disclosed. SHORT TERM FEES - For purchases made on or after July 1, 2004 and before April 1, 2005, the fund charged a 2% redemption fee (which was retained by the fund) on proceeds from Class A, Class B, Class C, and Class I shares redeemed or exchanged within 5 business days following their acquisition (either by purchase or exchange). Effective April 1, 2005, the fund no longer charges a redemption fee. See the fund's prospectus for details. Any redemption fees charged are accounted for as an addition to paid-in capital. INVESTMENT TRANSACTIONS AND INCOME - Investment transactions are recorded on the trade date. Interest income is recorded on the accrual basis. All premium and discount is amortized or accreted for financial statement purposes in accordance with U.S. generally accepted accounting principles. All discount is accreted for tax reporting purposes as required by federal income tax regulations. Dividends received in cash are recorded on the ex-dividend date. Certain dividends from foreign securities will be recorded when the fund is informed of the dividend if such information is obtained subsequent to the ex- dividend date. Dividend and interest payments received in additional securities are recorded on the ex-dividend or ex-interest date in an amount equal to the value of the security on such date. The fund may receive proceeds from litigation settlements involving its portfolio holdings. Any proceeds received are reflected in realized gain/loss in the Statement of Operations, or in unrealized gain/loss if the security is still held by the fund. FEES PAID INDIRECTLY - The fund's custody fee is reduced according to an arrangement that measures the value of cash deposited with the custodian by the fund. During the six months ended March 31, 2006, the fund's custodian fees were reduced by $22,937 under this arrangement. The fund has entered into a commission recapture agreement, under which certain brokers will credit the fund a portion of the commissions generated, to offset certain expenses of the fund. For the six months ended March 31, 2006, the fund's custodian expenses were reduced by $19,835 under this agreement. These amounts are shown as a reduction of total expenses on the Statement of Operations. Effective January 1, 2006, the commission recapture agreement was terminated. TAX MATTERS AND DISTRIBUTIONS - The fund intends to continue to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. Accordingly, no provision for federal income tax is required in the financial statements. Foreign taxes, if any, have been accrued by the fund in the accompanying financial statements. Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future. Distributions in excess of net investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from differences in the recognition or classification of income for financial statement and tax purposes. Book/tax differences primarily relate to net operating losses, real estate investment trusts, wash sale loss deferrals, foreign currency transactions, and treating a portion of the proceeds from redemptions as a distribution for tax purposes. The tax character of distributions made during the current period will be determined at fiscal year end. The tax character of distributions declared to shareholders is as follows: SEPTEMBER 30, 2005 SEPTEMBER 30, 2004 Ordinary income (including any short-term capital gains) $31,196,044 $269,551 Long-term capital gain 13,938,830 -- -------------------------------------------------------------------- Total distributions $45,134,874 $269,551 The federal tax cost and the tax basis components of distributable earnings were as follows: AS OF MARCH 31, 2006 Cost of investments $751,678,923 ---------------------------------------------------------- Gross appreciation $78,706,997 Gross depreciation (29,340,502) ---------------------------------------------------------- Net unrealized appreciation (depreciation) $49,366,495 AS OF SEPTEMBER 30, 2005 Undistributed ordinary income $45,505,900 Undistributed long-term capital gain 34,316,152 Other temporary differences (9,941) Net unrealized appreciation (depreciation) 41,975,551 The aggregate cost above includes prior fiscal year end tax adjustments. MULTIPLE CLASSES OF SHARES OF BENEFICIAL INTEREST - The fund offers multiple classes of shares, which differ in their respective distribution and service fees. All shareholders bear the common expenses of the fund based on daily net assets of each class, without distinction between share classes. Dividends are declared separately for each class. Differences in per share dividend rates are generally due to differences in separate class expenses. Class B and Class 529B shares will convert to Class A and Class 529A shares, respectively, approximately eight years after purchase. (3) TRANSACTIONS WITH AFFILIATES INVESTMENT ADVISER - The fund has an investment advisory agreement with MFS to provide overall investment advisory and administrative services, and general office facilities. The management fee is computed daily and paid monthly at an annual rate of 0.75% of the fund's average daily net assets. The investment adviser has contractually agreed to reduce it's management fee to 0.70% of average daily net assets in excess of $1 billion. For the six months ended March 31, 2006, the fund's average daily net assets did not exceed $1 billion and therefore, the management fee was not reduced. The management fee incurred for the six months ended March 31, 2006, was equivalent to an annual effective rate of 0.75% of the fund's average daily net assets. The investment adviser has contractually agreed to pay a portion of the fund's operating expenses, exclusive of management, distribution and service, retirement plan administration and services, program manager, and certain other fees and expenses, such that operating expenses do not exceed 0.25% annually of the fund's average daily net assets. This contractual fee arrangement will continue until February 1, 2007. For the six months ended March 31, 2006, the fund's actual operating expenses did not exceed the limit and therefore, the investment adviser did not pay any portion of the fund's expenses. DISTRIBUTOR - MFS Fund Distributors, Inc. (MFD), a wholly owned subsidiary of MFS, as distributor, received $44,296 and $1,061 for the six months ended March 31, 2006, as its portion of the initial sales charge on sales of Class A and Class 529A shares of the fund, respectively. The Board of Trustees has adopted a distribution plan for certain class shares pursuant to Rule 12b-1 of the Investment Company Act of 1940. The fund's distribution plan provides that the fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries. Distribution Fee Plan Table: TOTAL ANNUAL DISTRIBUTION DISTRIBUTION SERVICE DISTRIBUTION EFFECTIVE AND SERVICE FEE RATE FEE RATE PLAN(1) RATE(2) FEE Class A 0.10% 0.25% 0.35% 0.35% $265,040 Class B 0.75% 0.25% 1.00% 1.00% 558,531 Class C 0.75% 0.25% 1.00% 1.00% 217,955 Class R 0.25% 0.25% 0.50% 0.50% 23,708 Class R1 0.50% 0.25% 0.75% 0.75% 1,654 Class R2 0.25% 0.25% 0.50% 0.50% 1,338 Class R3 0.25% 0.25% 0.50% 0.50% 4,404 Class R4 -- 0.25% 0.25% 0.25% 108 Class 529A 0.25% 0.25% 0.50% 0.35% 1,989 Class 529B 0.75% 0.25% 1.00% 1.00% 1,022 Class 529C 0.75% 0.25% 1.00% 1.00% 1,869 - --------------------------------------------------------------------------------------------------------------------- Total Distribution and Service Fees $1,077,618 (1) In accordance with the distribution plan for certain classes, the fund pays distribution and/or service fees up to these annual percentage rates of each class' average daily net assets. (2) The annual effective rates represent actual fees incurred under the distribution plan for the six months ended March 31, 2006 based on each class' average daily net assets. 0.10% of the Class 529A distribution fee is currently being paid by the fund. Payment of the remaining 0.15% of the Class 529A distribution fee is not yet implemented and will commence on such date as the fund's Board of Trustees may determine. Certain Class A, Class C, and Class 529C shares are subject to a contingent deferred sales charge in the event of a shareholder redemption within 12 months of purchase. Class B and Class 529B shares are subject to a contingent deferred sales charge in the event of a shareholder redemption within six years of purchase. All contingent deferred sales charges are paid to MFD and during the six months ended March 31, 2006, were as follows: AMOUNT Class A $1,037 Class B 72,617 Class C 2,945 Class 529B 31 The fund has entered into and may from time to time enter into contracts with program managers and other parties which administer the tuition programs through which an investment in the fund's 529 share classes is made. The fund has entered into an agreement with MFD pursuant to which MFD receives an annual fee of up to 0.35% from the fund based solely upon the value of the fund's 529 share classes attributable to tuition programs to which MFD, or a third party which contracts with MFD, provides administrative services. The current fee has been established at 0.25% annually of average net assets of the fund's 529 share classes. The fee may only be increased with the approval of the Board of Trustees who oversees the fund. The services provided by MFD, or a third party with which MFD contracts, include recordkeeping and tax reporting and account services, as well as services designed to maintain the program's compliance with the Internal Revenue Code and other regulatory requirements. Program manager fees for the six months ended March 31, 2006, were as follows: AMOUNT Class 529A $1,421 Class 529B 256 Class 529C 467 -------------------------------------------------- Total Program Manager Fees $2,144 SHAREHOLDER SERVICING AGENT - The fund pays a portion of shareholder servicing costs to MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS. MFSC receives a fee from the fund, for its services as shareholder servicing agent, set periodically under the supervision of the fund's Board of Trustees. For the six months ended March 31, 2006, the fee was $356,706, which equated to 0.0962% annually of the fund's average daily net assets. MFSC also receives payment from the fund for out-of-pocket and sub-accounting expenses paid by MFSC on behalf of the fund. For the six months ended March 31, 2006, these costs amounted to $125,918. ADMINISTRATOR - MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to certain funds for which MFS acts as investment adviser. Under an administrative services agreement, the funds may partially reimburse MFS the costs incurred to provide these services, subject to review and approval by the Board of Trustees. Each fund is charged a fixed amount plus a fee based on calendar year average net assets. Effective July 1, 2005, the fund's annual fixed amount is $10,000. The administrative services fee incurred for the six months ended March 31, 2006 was equivalent to an annual effective rate of 0.0103% of the fund's average daily net assets. In addition to the administrative services provided by MFS to the fund as described above, MFS is responsible for providing certain retirement plan administration and services with respect to certain shares. These services include various administrative, recordkeeping, and communication/educational services with respect to the retirement plans which invest in these shares, and may be provided directly by MFS or by a third party. MFS may subsequently pay all, or a portion, of the retirement plan administration and services fee to affiliated or unaffiliated third parties. For the six months ended March 31, 2006, the fund paid MFS an annual retirement plan administration and services fee up to the following annual percentage rates of each class' average daily net assets: ANNUAL EFFECTIVE TOTAL FEE RATE RATE(1) AMOUNT Class R1 0.45% 0.35% $984 Class R2 0.40% 0.25% 1,069 Class R3 0.25% 0.15% 2,206 Class R4 0.15% 0.15% 65 Class R5 0.10% 0.10% 28 - ------------------------------------------------------------------------------ Total Retirement Plan Administration and Services Fees $4,352 (1) Effective October 1, 2005, MFS has contractually agreed to waive a portion of the retirement plan administration and services fee equal to 0.10% for Class R1 shares, 0.15% for Class R2 shares, and 0.10% for Class R3 shares. This agreement will continue until at least September 30, 2007. For the six months ended March 31, 2006, this waiver amounted to $1,489 and is reflected as a reduction of total expenses in the Statement of Operations. TRUSTEES' AND OFFICERS' COMPENSATION - The fund pays compensation to Independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. The fund does not pay compensation directly to Trustees who are officers of the investment adviser, or to officers of the fund, all of whom receive remuneration for their services to the fund from MFS. Certain officers and Trustees of the fund are officers or directors of MFS, MFD, and MFSC. OTHER - This fund and certain other MFS funds (the funds) have entered into a services agreement (the Agreement) which provides for payment of fees by the funds to Tarantino LLC in return for the provision of services of an Independent Chief Compliance Officer (ICCO) for the funds. The ICCO is an officer of the funds and the sole member of Tarantino LLC. The funds can terminate the Agreement with Tarantino LLC at any time under the terms of the Agreement. For the six months ended March 31, 2006, the fee paid to Tarantino LLC was $2,998. MFS has agreed to reimburse the fund for a portion of the payments made by the funds to Tarantino LLC in the amount of $2,430, which is shown as a reduction of total expenses in the Statement of Operations. Additionally, MFS has agreed to bear all expenses associated with office space, other administrative support, and supplies provided to the ICCO. (4) PORTFOLIO SECURITIES Purchases and sales of investments, other than U.S. government securities, purchased option transactions, and short-term obligations, aggregated $464,873,261 and $406,577,551, respectively. (5) SHARES OF BENEFICIAL INTEREST The fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in fund shares were as follows: SIX MONTHS ENDED 3/31/06 YEAR ENDED 9/30/05 (i) SHARES AMOUNT SHARES AMOUNT Shares sold Class A 2,619,373 $35,982,042 5,699,142 $78,002,281 Class B 860,651 11,484,868 3,117,703 41,801,180 Class C 594,178 7,935,698 1,408,379 18,976,385 Class I 3,969,344 55,046,088 6,198,850 84,368,344 Class R 157,953 2,193,923 722,135 9,775,292 Class R1 22,223 299,591 22,181 309,138 Class R2 98,744 1,307,821 30,662 429,112 Class R3 150,465 2,039,430 105,858 1,449,676 Class R4 9,252 125,528 3,754 50,000 Class R5 -- -- 3,754 50,000 Class 529A 13,004 176,133 20,445 276,947 Class 529B 3,472 46,640 2,040 26,452 Class 529C 3,399 44,759 12,566 166,218 - ------------------------------------------------------------------------------------------------------ 8,502,058 $116,682,521 17,347,469 $235,681,025 Shares issued to shareholders in reinvestment of distributions Class A 1,144,048 $15,170,079 615,526 $8,278,823 Class B 896,992 11,544,280 616,204 8,121,567 Class C 330,579 4,257,848 181,132 2,389,128 Class I 3,288,670 44,298,382 1,792,931 24,365,935 Class R 92,102 1,215,766 16,137 216,586 Class R1 3,918 50,372 -- -- Class R2 3,205 41,349 -- -- Class R3 14,048 184,015 1,580 21,100 Class R4 551 7,303 -- -- Class R5 449 5,977 -- -- Class 529A 9,381 122,986 4,894 65,333 Class 529B 1,811 23,073 1,004 13,148 Class 529C 3,200 40,872 1,271 16,670 - ------------------------------------------------------------------------------------------------------ 5,788,954 $76,962,302 3,230,679 $43,488,290 Shares reacquired Class A (1,913,169) $(26,222,910) (2,792,389) $(38,204,297) Class B (1,707,183) (22,723,160) (2,512,515) (33,579,685) Class C (547,758) (7,318,835) (572,502) (7,658,854) Class I (147,500) (2,132,069) (382,208) (5,349,897) Class R (457,395) (6,240,582) (139,070) (1,918,314) Class R1 (8,091) (108,572) -- -- Class R2 (11,210) (149,076) (1,630) (23,153) Class R3 (91,510) (1,224,099) (38,551) (521,295) Class R4 (10) (140) -- -- Class 529A (2,177) (29,167) (2,127) (29,483) Class 529B (254) (3,429) (1,112) (14,807) Class 529C (687) (9,690) (2,429) (33,024) - ------------------------------------------------------------------------------------------------------ (4,886,944) $(66,161,729) (6,444,533) $(87,332,809) Net change Class A 1,850,252 $24,929,211 3,522,279 $48,076,807 Class B 50,460 305,988 1,221,392 16,343,062 Class C 376,999 4,874,711 1,017,009 13,706,659 Class I 7,110,514 97,212,401 7,609,573 103,384,382 Class R (207,340) (2,830,893) 599,202 8,073,564 Class R1 18,050 241,391 22,181 309,138 Class R2 90,739 1,200,094 29,032 405,959 Class R3 73,003 999,346 68,887 949,481 Class R4 9,793 132,691 3,754 50,000 Class R5 449 5,977 3,754 50,000 Class 529A 20,208 269,952 23,212 312,797 Class 529B 5,029 66,284 1,932 24,793 Class 529C 5,912 75,941 11,408 149,864 - ------------------------------------------------------------------------------------------------------ 9,404,068 $127,483,094 14,133,615 $191,836,506 (i) For the period from the class' inception, April 1, 2005 (Classes R1, R2, R4, and R5) through the stated period end. The fund is one of several mutual funds in which the MFS funds-of-funds may invest. The MFS funds-of-funds do not invest in the underlying MFS funds for the purpose of exercising management or control. At the end of the period, the MFS Moderate Allocation Fund, MFS Growth Allocation Fund, and MFS Aggressive Growth Allocation Fund were the owners of record of approximately 12%, 27%, and 19%, respectively, of the value of outstanding voting shares. In addition, the MFS Lifetime 2020 Fund, MFS Lifetime 2030 Fund and the MFS Lifetime 2040 Fund were each the owners of record of less than 1% of the value of outstanding voting shares. (6) LINE OF CREDIT The fund and other affiliated funds participate in a $1 billion unsecured line of credit provided by a syndication of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, at a rate equal to the Federal Reserve funds rate plus 0.35%. In addition, a commitment fee, based on the average daily, unused portion of the line of credit, is allocated among the participating funds at the end of each calendar quarter. The commitment fee allocated to the fund for the six months ended March 31, 2006 was $2,305, and is included in miscellaneous expense on the Statement of Operations. The fund had no significant borrowings during the six months ended March 31, 2006. BOARD REVIEW OF INVESTMENT ADVISORY AGREEMENT A discussion regarding the Board's most recent review and renewal of the Fund's investment advisory agreement is available by clicking on the fund's name under "Select a fund" on the MFS Web site (mfs.com). PROXY VOTING POLICIES AND INFORMATION A general description of the MFS funds' proxy voting policies and procedures is available without charge, upon request, by calling 1-800-225-2606, by visiting the Proxy Voting section of mfs.com or by visiting the SEC's Web site at http://www.sec.gov. Information regarding how the fund voted proxies relating to portfolio securities during the most recent twelve-month period ended June 30 is available without charge by visiting the Proxy Voting section of mfs.com or by visiting the SEC's Web site at http://www.sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The trust will file a complete schedule of portfolio holdings with the Securities and Exchange Commission (the Commission) for the first and third quarters of each fiscal year on Form N-Q. The trust's Form N-Q may be reviewed and copied at the: Public Reference Room Securities and Exchange Commission 100 F Street, NE Room 1580 Washington, D.C. 20549 Information on the operation of the Public Reference Room may be obtained by calling the Commission at 1-202-551-5850. The trust's Form N-Q is available on the EDGAR database on the Commission's Internet Web site at http:// www.sec.gov, and copies of this information may be obtained, upon payment of a duplicating fee, by electronic request at the following e-mail address: publicinfo@sec.gov or by writing the Public Reference Section at the above address. A shareholder can also obtain the quarterly portfolio holdings report at mfs.com. CONTACT INFORMATION INVESTOR SERVICE Write to us at: MFS Service Center, Inc. P.O. Box 55824 Boston, MA 02205-5824 Type of Information Phone number Hours, Eastern Time - -------------------------------------------------------------------------------- General information 1-800-225-2606 8 a.m. to 8 p.m., any business day - -------------------------------------------------------------------------------- Speech- or hearing-impaired 1-800-637-6576 9 a.m. to 5 p.m., any business day - -------------------------------------------------------------------------------- Shares prices, account 1-800-MFS-TALK balances exchanges (1-800-637-8255) 24 hours a day, 365 days a or stock and bond outlooks touch-tone required year - -------------------------------------------------------------------------------- M F S(SM) INVESTMENT MANAGEMENT(R) MFS Investment Management(R) MFS(R) investment products are offered through MFS Fund Distributors, Inc., 500 Boylston Street, Boston, MA 02116. MDV-SEM-5/06 36M ITEM 2. CODE OF ETHICS. The Registrant has not amended any provision in its Code of Ethics (the "Code") that relates to any element of the Code's definition enumerated in paragraph (b) of Item 2 of this Form N-CSR. ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. Not applicable for semi-annual reports. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. Not applicable for semi-annual reports. ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS. Not applicable to the Registrant. ITEM 6. SCHEDULE OF INVESTMENTS A schedule of investments for each series of the Registrant is included as part of the report to shareholders of such series under Item 1 of this Form N-CSR. ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable to the Registrant. ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable to the Registrant. ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS. Not applicable to the Registrant. ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS. There were no material changes to the procedures by which shareholders may send recommendations to the Board for nominees to the Registrant's Board since the Registrant last provided disclosure as to such procedures in response to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14A or this Item. ITEM 11. CONTROLS AND PROCEDURES. (a) Based upon their evaluation of the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the "Act")) as conducted within 90 days of the filing date of this Form N-CSR, the registrant's principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. (b) There were no changes in the registrant's internal controls over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the second fiscal quarter of the period covered by the report that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. ITEM 12. EXHIBITS. (a) File the exhibits listed below as part of this Form. Letter or number the exhibits in the sequence indicated. (1) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit. (2) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2 under the Act (17 CFR 270.30a-2): Attached hereto. (b) If the report is filed under Section 13(a) or 15(d) of the Exchange Act, provide the certifications required by Rule 30a-2(b) under the Act (17 CFR 270.30a-2(b)), Rule 13a-14(b) or Rule 15d-14(b) under the Exchange Act (17 CFR 240.13a-14(b) or 240.15d-14(b)) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as an exhibit. A certification furnished pursuant to this paragraph will not be deemed "filed" for the purposes of Section 18 of the Exchange Act (15 U.S.C. 78r), or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference: Attached hereto. NOTICE A copy of the Amended and Restated Declaration of Trust of the Registrant is on file with the Secretary of State of the Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees or shareholders individually, but are binding only upon the assets and property of the respective constituent series of the Registrant. 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) MFS SERIES TRUST XI ------------------------------------------------------------------ By (Signature and Title)* MARIA F. DWYER ----------------------------------------------------- Maria F. Dwyer, President Date: May 23, 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)* MARIA F. DWYER ----------------------------------------------------- Maria F. Dwyer, President (Principal Executive Officer) Date: May 23, 2006 ------------ By (Signature and Title)* TRACY ATKINSON ----------------------------------------------------- Tracy Atkinson, Treasurer (Principal Financial Officer and Accounting Officer) Date: May 23, 2006 ------------ * Print name and title of each signing officer under his or her signature.