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 811-10001 OPPENHEIMER MAIN STREET OPPORTUNITY FUND (Exact name of registrant as specified in charter) 6803 SOUTH TUCSON WAY, CENTENNIAL, COLORADO 80112-3924 (Address of principal executive offices) (Zip code) ROBERT G. ZACK, ESQ. OPPENHEIMERFUNDS, INC. TWO WORLD FINANCIAL CENTER, NEW YORK, NEW YORK 10281-1008 (Name and address of agent for service) Registrant's telephone number, including area code: (303) 768-3200 Date of fiscal year end: JULY 31 Date of reporting period: JANUARY 31, 2006 ITEM 1. REPORTS TO STOCKHOLDERS. TOP HOLDINGS AND ALLOCATIONS - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- TOP TEN COMMON STOCK INDUSTRIES - -------------------------------------------------------------------------------- Oil & Gas 10.2% - -------------------------------------------------------------------------------- Diversified Financial Services 7.5 - -------------------------------------------------------------------------------- Pharmaceuticals 4.9 - -------------------------------------------------------------------------------- Health Care Providers & Services 4.9 - -------------------------------------------------------------------------------- Software 4.9 - -------------------------------------------------------------------------------- Semiconductors & Semiconductor Equipment 4.8 - -------------------------------------------------------------------------------- Insurance 4.7 - -------------------------------------------------------------------------------- Computers & Peripherals 4.3 - -------------------------------------------------------------------------------- Commercial Banks 4.1 - -------------------------------------------------------------------------------- Specialty Retail 3.8 Portfolio holdings and allocations are subject to change. Percentages are as of January 31, 2006, and are based on net assets. TOP TEN COMMON STOCK HOLDINGS - -------------------------------------------------------------------------------- Exxon Mobil Corp. 2.9% - -------------------------------------------------------------------------------- General Electric Co. 2.2 - -------------------------------------------------------------------------------- Microsoft Corp. 1.8 - -------------------------------------------------------------------------------- Citigroup, Inc. 1.7 - -------------------------------------------------------------------------------- Pfizer, Inc. 1.5 - -------------------------------------------------------------------------------- Bank of America Corp. 1.4 - -------------------------------------------------------------------------------- Intel Corp. 1.3 - -------------------------------------------------------------------------------- Johnson & Johnson 1.3 - -------------------------------------------------------------------------------- Chevron Corp. 1.2 - -------------------------------------------------------------------------------- Procter & Gamble Co. (The) 1.2 Portfolio holdings and allocations are subject to change. Percentages are as of January 31, 2006, and are based on net assets. For up-to-date Top 10 Fund holdings, please visit www.oppenheimerfunds.com. 10 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND - -------------------------------------------------------------------------------- SECTOR ALLOCATION [THE FOLLOWING TABLE WAS REPRESENTED BY A PIE CHART IN THE PRINTED MATERIAL.] Information Technology 21.7% Financials 18.1 Health Care 13.4 Consumer Discretionary 11.7 Energy 11.1 Industrials 10.9 Consumer Staples 6.2 Materials 3.1 Telecommunication Services 2.9 Utilities 0.9 Portfolio holdings and allocations are subject to change. Percentages are as of January 31, 2006, and are based on the total market value of common stocks. - -------------------------------------------------------------------------------- 11 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND NOTES - -------------------------------------------------------------------------------- Total returns include changes in share price and reinvestment of dividends and capital gains distributions in a hypothetical investment for the periods shown. Cumulative total returns are not annualized. The Fund's total returns shown do not reflect the deduction of income taxes on an individual's investment. Taxes may reduce your actual investment returns on income or gains paid by the Fund or any gains you may realize if you sell your shares. INVESTORS SHOULD CONSIDER THE FUND'S INVESTMENT OBJECTIVES, RISKS, AND OTHER CHARGES AND EXPENSES CAREFULLY BEFORE INVESTING. THE FUND'S PROSPECTUS CONTAINS THIS AND OTHER INFORMATION ABOUT THE FUND, AND MAY BE OBTAINED BY ASKING YOUR FINANCIAL ADVISOR, CALLING US AT 1.800.525.7048 OR VISITING OUR WEBSITE AT WWW.OPPENHEIMERFUNDS.COM. READ THE PROSPECTUS CAREFULLY BEFORE INVESTING. The Fund's investment strategy and focus can change over time. The mention of specific fund holdings does not constitute a recommendation by OppenheimerFunds, Inc. CLASS A shares of the Fund were first publicly offered on 9/25/00. Unless otherwise noted, Class A returns include the current maximum initial sales charge of 5.75%. CLASS B shares of the Fund were first publicly offered on 9/25/00. Unless otherwise noted, Class B returns include the applicable contingent deferred sales charge of 5% (1-year) and 2% (5-year). Class B shares are subject to an annual 0.75% asset-based sales charge. CLASS C shares of the Fund were first publicly offered on 9/25/00. Unless otherwise noted, Class C returns include the contingent deferred sales charge of 1% for the 1-year period. Class C shares are subject to an annual 0.75% asset-based sales charge. CLASS N shares of the Fund were first publicly offered on 3/1/01. Class N shares are offered only through retirement plans. Unless otherwise noted, Class N returns include the contingent deferred sales charge of 1% for the 1-year period. Class N shares are subject to an annual 0.25% asset-based sales charge. 12 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND CLASS Y shares of the Fund were first publicly offered on 9/25/00. Class Y shares are offered only to certain institutional investors under special agreement with the Distributor. An explanation of the calculation of performance is in the Fund's Statement of Additional Information. 13 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND FUND EXPENSES - -------------------------------------------------------------------------------- FUND EXPENSES. As a shareholder of the Fund, you incur two types of costs: (1) transaction costs, which may include sales charges (loads) on purchase payments, contingent deferred sales charges on redemptions; and redemption fees, if any; and (2) ongoing costs, including management fees; distribution and service fees; and other Fund expenses. These examples are 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 examples are based on an investment of $1,000.00 invested at the beginning of the period and held for the entire 6-month period ended January 31, 2006. ACTUAL EXPENSES. The "actual" lines of the table provide information about actual account values and actual expenses. You may use the information on this line for the class of shares you hold, together with the amount you invested, to estimate the expense that you paid over the period. Simply divide your account value by $1,000.00 (for example, an $8,600.00 account value divided by $1,000.00 = 8.60), then multiply the result by the number in the "actual" 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 "hypothetical" lines of the table provide information about hypothetical account values and hypothetical expenses based on the Fund's actual expense ratio for each class of shares, 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 for the class of shares you hold 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 front-end or contingent deferred sales charges (loads), or a $12.00 fee imposed annually on accounts valued at less than $500.00 (subject to exceptions described in 14 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND the Statement of Additional Information). Therefore, the "hypothetical" lines of the table are 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. - -------------------------------------------------------------------------------- BEGINNING ENDING EXPENSES ACCOUNT ACCOUNT PAID DURING VALUE VALUE 6 MONTHS ENDED (8/1/05) (1/31/06) JANUARY 31, 2006 - -------------------------------------------------------------------------------- Class A Actual $1,000.00 $1,072.00 $ 5.66 - -------------------------------------------------------------------------------- Class A Hypothetical 1,000.00 1,019.76 5.51 - -------------------------------------------------------------------------------- Class B Actual 1,000.00 1,068.00 10.11 - -------------------------------------------------------------------------------- Class B Hypothetical 1,000.00 1,015.48 9.85 - -------------------------------------------------------------------------------- Class C Actual 1,000.00 1,067.70 9.58 - -------------------------------------------------------------------------------- Class C Hypothetical 1,000.00 1,015.98 9.34 - -------------------------------------------------------------------------------- Class N Actual 1,000.00 1,070.20 7.70 - -------------------------------------------------------------------------------- Class N Hypothetical 1,000.00 1,017.80 7.50 - -------------------------------------------------------------------------------- Class Y Actual 1,000.00 1,074.10 3.98 - -------------------------------------------------------------------------------- Class Y Hypothetical 1,000.00 1,021.37 3.88 Hypothetical assumes 5% annual return before expenses. Expenses are equal to the Fund's annualized expense ratio for that class, multiplied by the average account value over the period, multiplied by 184/365 (to reflect the one-half year period). Those annualized expense ratios based on the 6-month period ended January 31, 2006 are as follows: CLASS EXPENSE RATIOS - -------------------------------- Class A 1.08% - -------------------------------- Class B 1.93 - -------------------------------- Class C 1.83 - -------------------------------- Class N 1.47 - -------------------------------- Class Y 0.76 - -------------------------------------------------------------------------------- 15 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF INVESTMENTS January 31, 2006 / Unaudited - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- COMMON STOCKS--99.0% - -------------------------------------------------------------------------------- CONSUMER DISCRETIONARY--11.6% - -------------------------------------------------------------------------------- AUTO COMPONENTS--0.5% ArvinMeritor, Inc. 94,400 $ 1,647,280 - -------------------------------------------------------------------------------- Autoliv, Inc. 10,400 509,496 - -------------------------------------------------------------------------------- Borg-Warner Automotive, Inc. 10,600 584,378 - -------------------------------------------------------------------------------- Dana Corp. 138,000 672,060 - -------------------------------------------------------------------------------- Goodyear Tire & Rubber Co. (The) 1,2 159,300 2,491,452 - -------------------------------------------------------------------------------- Johnson Controls, Inc. 72,100 4,992,204 - -------------------------------------------------------------------------------- Modine Manufacturing Co. 38,100 1,032,510 - -------------------------------------------------------------------------------- Tenneco, Inc. 1 82,900 1,819,655 - -------------------------------------------------------------------------------- TRW Automotive Holdings Corp. 1 47,900 1,231,030 - -------------------------------------------------------------------------------- Visteon Corp. 1 148,200 778,050 -------------- 15,758,115 - -------------------------------------------------------------------------------- AUTOMOBILES--0.6% Fleetwood Enterprises, Inc. 1 12,900 153,510 - -------------------------------------------------------------------------------- Ford Motor Co. 1,055,900 9,059,622 - -------------------------------------------------------------------------------- General Motors Corp. 125,700 3,024,342 - -------------------------------------------------------------------------------- Harley-Davidson, Inc. 138,500 7,413,905 -------------- 19,651,379 - -------------------------------------------------------------------------------- DISTRIBUTORS--0.1% Genuine Parts Co. 40,000 1,701,200 - -------------------------------------------------------------------------------- DIVERSIFIED CONSUMER SERVICES--0.3% Apollo Group, Inc., Cl. A 1 68,600 3,818,962 - -------------------------------------------------------------------------------- Career Education Corp. 1 53,400 1,734,966 - -------------------------------------------------------------------------------- Jackson Hewitt Tax Service, Inc. 58,400 1,475,184 - -------------------------------------------------------------------------------- Service Corp. International 60,600 495,708 - -------------------------------------------------------------------------------- ServiceMaster Co. (The) 7,900 102,226 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- DIVERSIFIED CONSUMER SERVICES Continued Weight Watchers International, Inc. 1 30,900 $ 1,453,536 -------------- 9,080,582 - -------------------------------------------------------------------------------- HOTELS, RESTAURANTS & LEISURE--0.6% Aztar Corp. 1 20,800 641,888 - -------------------------------------------------------------------------------- Brinker International, Inc. 8,900 362,230 - -------------------------------------------------------------------------------- Choice Hotels International, Inc. 61,500 2,923,095 - -------------------------------------------------------------------------------- Darden Restaurants, Inc. 22,700 922,982 - -------------------------------------------------------------------------------- Domino's Pizza, Inc. 57,400 1,429,834 - -------------------------------------------------------------------------------- International Game Technology 37,900 1,356,062 - -------------------------------------------------------------------------------- McDonald's Corp. 188,800 6,609,888 - -------------------------------------------------------------------------------- Six Flags, Inc. 1 29,100 337,851 - -------------------------------------------------------------------------------- Vail Resorts, Inc. 1 1,000 30,390 - -------------------------------------------------------------------------------- Yum! Brands, Inc. 119,900 5,931,453 -------------- 20,545,673 - -------------------------------------------------------------------------------- HOUSEHOLD DURABLES--0.5% American Greetings Corp., Cl. A 54,100 1,104,181 - -------------------------------------------------------------------------------- Beazer Homes USA, Inc. 2 18,900 1,376,676 - -------------------------------------------------------------------------------- Black & Decker Corp. 11,600 1,001,080 - -------------------------------------------------------------------------------- Champion Enterprises, Inc. 1 17,500 239,925 - -------------------------------------------------------------------------------- D.R. Horton, Inc. 15,600 582,192 - -------------------------------------------------------------------------------- Ethan Allen Interiors, Inc. 11,000 467,610 - -------------------------------------------------------------------------------- Furniture Brands International, Inc. 78,700 1,893,522 - -------------------------------------------------------------------------------- La-Z-Boy, Inc. 9,500 155,230 - -------------------------------------------------------------------------------- Lennar Corp., Cl. A 41,400 2,589,984 - -------------------------------------------------------------------------------- MDC Holdings, Inc. 20,200 1,281,690 - -------------------------------------------------------------------------------- Newell Rubbermaid, Inc. 39,300 929,052 - -------------------------------------------------------------------------------- Ryland Group, Inc. (The) 13,100 947,916 - -------------------------------------------------------------------------------- Snap-On, Inc. 27,400 1,099,562 16 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- HOUSEHOLD DURABLES Continued Stanley Works (The) 21,800 $ 1,069,072 - -------------------------------------------------------------------------------- Whirlpool Corp. 15,300 1,234,404 -------------- 15,972,096 - -------------------------------------------------------------------------------- INTERNET & CATALOG RETAIL--0.2% Blue Nile, Inc. 1,2 18,100 676,035 - -------------------------------------------------------------------------------- eBay, Inc. 1 115,000 4,956,500 - -------------------------------------------------------------------------------- Insight Enterprises, Inc. 1 71,000 1,484,610 -------------- 7,117,145 - -------------------------------------------------------------------------------- LEISURE EQUIPMENT & PRODUCTS--0.1% Hasbro, Inc. 136,000 2,883,200 - -------------------------------------------------------------------------------- Mattel, Inc. 36,700 605,550 - -------------------------------------------------------------------------------- Oakley, Inc. 27,100 424,115 - -------------------------------------------------------------------------------- RC2 Corp. 1 1,100 38,357 -------------- 3,951,222 - -------------------------------------------------------------------------------- MEDIA--3.0% Belo Corp., Cl. A 32,300 736,763 - -------------------------------------------------------------------------------- Cablevision Systems Corp., New York Group, Cl. A 1 56,600 1,392,360 - -------------------------------------------------------------------------------- CBS Corp., Cl. B 207,264 5,415,808 - -------------------------------------------------------------------------------- Citadel Broadcasting Corp. 98,200 1,207,860 - -------------------------------------------------------------------------------- Clear Channel Communications, Inc. 254,000 7,434,580 - -------------------------------------------------------------------------------- Comcast Corp., Cl. A 1 135,000 3,755,700 - -------------------------------------------------------------------------------- Cox Radio, Inc., Cl. A 1 32,700 461,070 - -------------------------------------------------------------------------------- Emmis Communications Corp., Cl. A 1 5,600 99,624 - -------------------------------------------------------------------------------- Entercom Communications Corp. 1 29,400 887,586 - -------------------------------------------------------------------------------- Gannett Co., Inc. 92,800 5,735,040 - -------------------------------------------------------------------------------- Liberty Corp. 3,200 151,552 - -------------------------------------------------------------------------------- Liberty Media Corp., Cl. A 1 436,600 3,649,976 - -------------------------------------------------------------------------------- Live Nation 1 25,862 459,051 - -------------------------------------------------------------------------------- McGraw-Hill Cos., Inc. (The) 53,000 2,705,120 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- MEDIA Continued News Corp., Inc., Cl. A 608,100 $ 9,583,656 - -------------------------------------------------------------------------------- Omnicom Group, Inc. 59,900 4,899,221 - -------------------------------------------------------------------------------- R.H. Donnelley Corp. 1 24,100 1,581,442 - -------------------------------------------------------------------------------- Sinclair Broadcast Group, Inc., Cl. A 114,800 913,808 - -------------------------------------------------------------------------------- Time Warner, Inc. 1,484,100 26,016,273 - -------------------------------------------------------------------------------- Univision Communications, Inc., Cl. A 1 1,000 31,840 - -------------------------------------------------------------------------------- Viacom, Inc., Cl. B 1 207,264 8,597,311 - -------------------------------------------------------------------------------- Walt Disney Co. (The) 275,000 6,960,250 - -------------------------------------------------------------------------------- Westwood One, Inc. 21,600 323,784 - -------------------------------------------------------------------------------- Wiley (John) & Sons, Inc., Cl. A 54,600 2,069,340 - -------------------------------------------------------------------------------- World Wrestling Federation Entertainment, Inc. 15,200 222,680 -------------- 95,291,695 - -------------------------------------------------------------------------------- MULTILINE RETAIL--1.3% 99 Cents Only Stores 1 9,700 101,268 - -------------------------------------------------------------------------------- Big Lots, Inc. 1 31,200 417,144 - -------------------------------------------------------------------------------- Dollar General Corp. 109,500 1,850,550 - -------------------------------------------------------------------------------- Dollar Tree Stores, Inc. 1 112,500 2,788,875 - -------------------------------------------------------------------------------- Federated Department Stores, Inc. 118,800 7,915,644 - -------------------------------------------------------------------------------- J.C. Penney Co., Inc. (Holding Co.) 148,100 8,263,980 - -------------------------------------------------------------------------------- Kohl's Corp. 1 96,300 4,274,757 - -------------------------------------------------------------------------------- Nordstrom, Inc. 197,400 8,235,528 - -------------------------------------------------------------------------------- Saks, Inc. 1 2,400 46,344 - -------------------------------------------------------------------------------- Sears Holdings Corp. 1 2,100 255,024 - -------------------------------------------------------------------------------- Stage Stores, Inc. 7,700 228,613 - -------------------------------------------------------------------------------- Stein Mart, Inc. 23,900 396,262 - -------------------------------------------------------------------------------- Target Corp. 152,900 8,371,275 -------------- 43,145,264 - -------------------------------------------------------------------------------- SPECIALTY RETAIL--3.8% Advance Auto Parts, Inc. 1 13,350 581,660 17 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF INVESTMENTS Unaudited / Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- SPECIALTY RETAIL Continued American Eagle Outfitters, Inc. 112,500 $ 3,035,250 - -------------------------------------------------------------------------------- AnnTaylor Stores Corp. 1 41,900 1,396,108 - -------------------------------------------------------------------------------- AutoNation, Inc. 1 132,600 2,955,654 - -------------------------------------------------------------------------------- AutoZone, Inc. 1 4,000 391,000 - -------------------------------------------------------------------------------- Barnes & Noble, Inc. 62,100 2,634,282 - -------------------------------------------------------------------------------- Bed Bath & Beyond, Inc. 1 90,700 3,393,087 - -------------------------------------------------------------------------------- Best Buy Co., Inc. 185,900 9,417,694 - -------------------------------------------------------------------------------- Building Materials Holding Corp. 14,300 1,132,131 - -------------------------------------------------------------------------------- Burlington Coat Factory Warehouse Corp. 26,200 1,170,616 - -------------------------------------------------------------------------------- Charming Shoppes, Inc. 1 160,000 1,945,600 - -------------------------------------------------------------------------------- Chico's FAS, Inc. 1 55,800 2,430,648 - -------------------------------------------------------------------------------- Children's Place Retail Stores, Inc. 1 31,000 1,357,490 - -------------------------------------------------------------------------------- Circuit City Stores, Inc./ Circuit City Group 91,600 2,309,236 - -------------------------------------------------------------------------------- Claire's Stores, Inc. 59,400 1,880,604 - -------------------------------------------------------------------------------- Gap, Inc. (The) 404,800 7,322,832 - -------------------------------------------------------------------------------- Genesco, Inc. 1 37,400 1,456,730 - -------------------------------------------------------------------------------- Group 1 Automotive, Inc. 1 20,300 699,944 - -------------------------------------------------------------------------------- Guess?, Inc. 1 43,100 1,828,733 - -------------------------------------------------------------------------------- Gymboree Corp. 1 23,300 574,112 - -------------------------------------------------------------------------------- Hibbett Sporting Goods, Inc. 1 24,450 749,393 - -------------------------------------------------------------------------------- Home Depot, Inc. 600,000 24,330,000 - -------------------------------------------------------------------------------- Limited Brands, Inc. 11,500 272,090 - -------------------------------------------------------------------------------- Lowe's Cos., Inc. 225,300 14,317,815 - -------------------------------------------------------------------------------- Men's Wearhouse, Inc. (The) 1 51,850 1,771,715 - -------------------------------------------------------------------------------- NetFlix.com, Inc. 1 21,700 597,835 - -------------------------------------------------------------------------------- Office Depot, Inc. 1 91,400 3,029,910 - -------------------------------------------------------------------------------- OfficeMax, Inc. 26,600 759,962 - -------------------------------------------------------------------------------- Pacific Sunwear of California, Inc. 1 41,900 1,026,969 - -------------------------------------------------------------------------------- Payless ShoeSource, Inc. 1 11,600 282,576 - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- SPECIALTY RETAIL Continued RadioShack Corp. 90,000 $ 1,998,000 - -------------------------------------------------------------------------------- Ross Stores, Inc. 17,600 501,600 - -------------------------------------------------------------------------------- Sonic Automotive, Inc. 23,800 560,014 - -------------------------------------------------------------------------------- Sports Authority, Inc. (The) 1 46,000 1,689,120 - -------------------------------------------------------------------------------- Staples, Inc. 456,750 10,829,543 - -------------------------------------------------------------------------------- Talbots, Inc. (The) 41,200 1,148,244 - -------------------------------------------------------------------------------- Tiffany & Co. 27,200 1,025,440 - -------------------------------------------------------------------------------- TJX Cos., Inc. (The) 151,100 3,857,583 - -------------------------------------------------------------------------------- Too, Inc. 1 50,400 1,458,072 - -------------------------------------------------------------------------------- Tuesday Morning Corp. 21,100 449,008 - -------------------------------------------------------------------------------- United Auto Group, Inc. 42,600 1,631,580 - -------------------------------------------------------------------------------- Zale Corp. 1 28,400 696,084 -------------- 120,895,964 - -------------------------------------------------------------------------------- TEXTILES, APPAREL & LUXURY GOODS--0.6% Coach, Inc. 1 208,100 7,481,195 - -------------------------------------------------------------------------------- Columbia Sportswear Co. 1 14,300 738,595 - -------------------------------------------------------------------------------- Jones Apparel Group, Inc. 37,400 1,169,872 - -------------------------------------------------------------------------------- K-Swiss, Inc., Cl. A 33,000 1,044,450 - -------------------------------------------------------------------------------- Liz Claiborne, Inc. 41,700 1,447,824 - -------------------------------------------------------------------------------- Nike, Inc., Cl. B 26,200 2,120,890 - -------------------------------------------------------------------------------- Phillips/Van Heusen Corp. 19,200 693,696 - -------------------------------------------------------------------------------- Timberland Co., Cl. A 1 74,100 2,590,536 - -------------------------------------------------------------------------------- Tommy Hilfiger Corp. 1 69,600 1,148,400 - -------------------------------------------------------------------------------- Warnaco Group, Inc. (The) 1 6,700 166,294 - -------------------------------------------------------------------------------- Wolverine World Wide, Inc. 19,850 477,393 -------------- 19,079,145 - -------------------------------------------------------------------------------- CONSUMER STAPLES--6.2% - -------------------------------------------------------------------------------- BEVERAGES--0.8% Brown-Forman Corp., Cl. B 17,000 1,205,640 - -------------------------------------------------------------------------------- Coca-Cola Co. (The) 272,100 11,259,498 18 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- BEVERAGES Continued Pepsi Bottling Group, Inc. (The) 90,400 $ 2,621,600 - -------------------------------------------------------------------------------- PepsiAmericas, Inc. 25,800 631,842 - -------------------------------------------------------------------------------- PepsiCo, Inc. 186,100 10,641,198 -------------- 26,359,778 - -------------------------------------------------------------------------------- FOOD & STAPLES RETAILING--1.7% Albertson's, Inc. 114,000 2,867,100 - -------------------------------------------------------------------------------- Casey's General Stores, Inc. 37,200 946,740 - -------------------------------------------------------------------------------- Costco Wholesale Corp. 37,800 1,885,842 - -------------------------------------------------------------------------------- Kroger Co. (The) 1 415,700 7,648,880 - -------------------------------------------------------------------------------- Performance Food Group Co. 1 20,900 576,213 - -------------------------------------------------------------------------------- Rite Aid Corp. 1 27,400 98,366 - -------------------------------------------------------------------------------- Safeway, Inc. 373,800 8,761,872 - -------------------------------------------------------------------------------- SUPERVALU, Inc. 62,000 1,979,660 - -------------------------------------------------------------------------------- Sysco Corp. 109,900 3,371,732 - -------------------------------------------------------------------------------- Wal-Mart Stores, Inc. 396,000 18,259,560 - -------------------------------------------------------------------------------- Walgreen Co. 33,400 1,445,552 - -------------------------------------------------------------------------------- Whole Foods Market, Inc. 81,400 6,013,018 -------------- 53,854,535 - -------------------------------------------------------------------------------- FOOD PRODUCTS--0.9% Archer-Daniels- Midland Co. 139,700 4,400,550 - -------------------------------------------------------------------------------- Campbell Soup Co. 65,300 1,954,429 - -------------------------------------------------------------------------------- Dean Foods Co. 1 53,500 2,029,255 - -------------------------------------------------------------------------------- Del Monte Foods Co. 247,100 2,641,499 - -------------------------------------------------------------------------------- Flowers Foods, Inc. 79,225 2,179,480 - -------------------------------------------------------------------------------- General Mills, Inc. 88,100 4,282,541 - -------------------------------------------------------------------------------- Gold Kist Holdings, Inc. 1 88,000 1,329,680 - -------------------------------------------------------------------------------- Heinz (H.J.) Co. 53,800 1,825,972 - -------------------------------------------------------------------------------- Pilgrim's Pride Corp., Cl. B 68,200 1,659,988 - -------------------------------------------------------------------------------- Sara Lee Corp. 204,600 3,740,088 - -------------------------------------------------------------------------------- Seaboard Corp. 1,200 1,763,988 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- FOOD PRODUCTS Continued Tyson Foods, Inc., Cl. A 45,500 $ 652,015 -------------- 28,459,485 - -------------------------------------------------------------------------------- HOUSEHOLD PRODUCTS--1.3% Energizer Holdings, Inc. 1 24,700 1,336,517 - -------------------------------------------------------------------------------- Kimberly-Clark Corp. 14,800 845,376 - -------------------------------------------------------------------------------- Playtex Products, Inc. 1 34,700 465,674 - -------------------------------------------------------------------------------- Procter & Gamble Co. (The) 642,767 38,071,089 -------------- 40,718,656 - -------------------------------------------------------------------------------- PERSONAL PRODUCTS--0.2% Avon Products, Inc. 186,500 5,281,680 - -------------------------------------------------------------------------------- TOBACCO--1.3% Altria Group, Inc. 460,200 33,290,868 - -------------------------------------------------------------------------------- Loews Corp./Carolina Group 35,400 1,632,648 - -------------------------------------------------------------------------------- Reynolds American, Inc. 78,500 7,938,705 - -------------------------------------------------------------------------------- UST, Inc. 14,500 564,630 - -------------------------------------------------------------------------------- Vector Group Ltd. 3,400 61,778 -------------- 43,488,629 - -------------------------------------------------------------------------------- ENERGY--11.0% - -------------------------------------------------------------------------------- ENERGY EQUIPMENT & SERVICES--0.8% Ensign Energy Services, Inc. 45,000 1,896,712 - -------------------------------------------------------------------------------- Grey Wolf, Inc. 1 214,800 1,890,240 - -------------------------------------------------------------------------------- Halliburton Co. 27,700 2,203,535 - -------------------------------------------------------------------------------- Helmerich & Payne, Inc. 1,100 86,196 - -------------------------------------------------------------------------------- Lone Star Technologies, Inc. 1 29,100 1,655,790 - -------------------------------------------------------------------------------- Maverick Tube Corp. 1 20,300 971,355 - -------------------------------------------------------------------------------- NS Group, Inc. 1 40,200 1,817,040 - -------------------------------------------------------------------------------- Precision Drilling Trust 10,000 333,611 - -------------------------------------------------------------------------------- Tetra Technologies, Inc. 1 2,350 93,248 - -------------------------------------------------------------------------------- Transocean, Inc. 1 98,000 7,952,700 - -------------------------------------------------------------------------------- Trican Well Service Ltd. 1 55,200 2,918,348 19 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF INVESTMENTS Unaudited / Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- ENERGY EQUIPMENT & SERVICES Continued Universal Compression Holdings, Inc. 1 24,800 $ 1,190,400 - -------------------------------------------------------------------------------- Veritas DGC, Inc. 1 48,000 2,162,880 -------------- 25,172,055 - -------------------------------------------------------------------------------- OIL & GAS--10.2% Alberta Clipper Energy, Inc. 1 84,317 264,266 - -------------------------------------------------------------------------------- Amerada Hess Corp. 40,400 6,253,920 - -------------------------------------------------------------------------------- Anadarko Petroleum Corp. 110,000 11,860,200 - -------------------------------------------------------------------------------- Apache Corp. 125,000 9,441,250 - -------------------------------------------------------------------------------- Atlas Energy Ltd. 1 500,000 2,348,448 - -------------------------------------------------------------------------------- ATP Oil & Gas Corp. 1 3,700 157,435 - -------------------------------------------------------------------------------- Basic Energy Services, Inc. 1 23,600 661,980 - -------------------------------------------------------------------------------- Burlington Resources, Inc. 156,700 14,300,442 - -------------------------------------------------------------------------------- Canadian Natural Resources Ltd. 78,400 4,859,348 - -------------------------------------------------------------------------------- Chamaelo Exploration Ltd. 1 383,120 2,589,899 - -------------------------------------------------------------------------------- Chevron Corp. 668,271 39,681,942 - -------------------------------------------------------------------------------- Clear Energy, Inc. 1 239,466 1,028,040 - -------------------------------------------------------------------------------- Comstock Resources, Inc. 1 41,000 1,312,000 - -------------------------------------------------------------------------------- ConocoPhillips 458,000 29,632,600 - -------------------------------------------------------------------------------- Cyries Energy, Inc. 1 90,820 1,219,917 - -------------------------------------------------------------------------------- Delphi Energy Corp. 1 150,000 670,295 - -------------------------------------------------------------------------------- Devon Energy Corp. 125,000 8,526,250 - -------------------------------------------------------------------------------- Duvernay Oil Corp. 1 64,500 2,542,514 - -------------------------------------------------------------------------------- Encore Acquisition Co. 1 2,600 93,990 - -------------------------------------------------------------------------------- EOG Resources, Inc. 50,000 4,227,000 - -------------------------------------------------------------------------------- Exxon Mobil Corp. 1,505,200 94,451,295 - -------------------------------------------------------------------------------- Forest Oil Corp. 1 3,900 200,850 - -------------------------------------------------------------------------------- Galleon Energy, Inc., Cl. A 1 11,500 247,961 - -------------------------------------------------------------------------------- General Maritime Corp. 23,200 870,928 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- OIL & GAS Continued Giant Industries, Inc. 1 21,200 $ 1,481,668 - -------------------------------------------------------------------------------- Highpine Oil & Gas Ltd. 1 18,400 394,153 - -------------------------------------------------------------------------------- Holly Corp. 13,000 956,800 - -------------------------------------------------------------------------------- KCS Energy, Inc. 1 67,100 1,947,913 - -------------------------------------------------------------------------------- Kerr-McGee Corp. 64,629 7,134,395 - -------------------------------------------------------------------------------- Marathon Oil Corp. 130,000 9,993,100 - -------------------------------------------------------------------------------- Mission Oil & Gas, Inc. 1 64,495 494,874 - -------------------------------------------------------------------------------- Mission Oil & Gas, Inc. 1,3 74,500 571,643 - -------------------------------------------------------------------------------- Murphy Oil Corp. 8,300 473,100 - -------------------------------------------------------------------------------- Occidental Petroleum Corp. 124,238 12,139,295 - -------------------------------------------------------------------------------- OMI Corp. 60,000 1,053,600 - -------------------------------------------------------------------------------- Overseas Shipholding Group, Inc. 47,400 2,444,892 - -------------------------------------------------------------------------------- Paramount Resources Ltd., Cl. A 1 193,600 6,110,285 - -------------------------------------------------------------------------------- Petrohawk Energy Corp. 1 39,300 628,800 - -------------------------------------------------------------------------------- ProEx Energy Ltd. 1 55,720 723,007 - -------------------------------------------------------------------------------- ProspEx Resources Ltd. 1 72,240 237,830 - -------------------------------------------------------------------------------- Real Resources, Inc. 1 40,000 971,336 - -------------------------------------------------------------------------------- Remington Oil & Gas Corp. 1 35,000 1,568,000 - -------------------------------------------------------------------------------- Sunoco, Inc. 109,800 10,452,960 - -------------------------------------------------------------------------------- Swift Energy Co. 1 36,800 1,818,656 - -------------------------------------------------------------------------------- Talisman Energy, Inc. 77,400 4,709,029 - -------------------------------------------------------------------------------- Tesoro Corp. 50,400 3,652,488 - -------------------------------------------------------------------------------- Thunder Energy Trust 126,488 1,273,708 - -------------------------------------------------------------------------------- Trilogy Energy Trust 50,300 1,009,047 - -------------------------------------------------------------------------------- True Energy Trust 20,000 349,414 - -------------------------------------------------------------------------------- Tusk Energy Corp. 1 291,600 972,811 - -------------------------------------------------------------------------------- Tusk Energy Corp. 1,3 258,700 863,053 - -------------------------------------------------------------------------------- Valero Energy Corp. 110,202 6,879,911 - -------------------------------------------------------------------------------- Vault Energy Trust 45,800 422,194 - -------------------------------------------------------------------------------- Western Refining, Inc. 1 145,100 2,720,625 20 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- OIL & GAS Continued Whiting Petroleum Corp. 1 40,400 $ 1,870,520 - -------------------------------------------------------------------------------- XTO Energy, Inc. 92,000 4,515,360 -------------- 328,277,237 - -------------------------------------------------------------------------------- FINANCIALS--17.9% - -------------------------------------------------------------------------------- CAPITAL MARKETS--0.5% Ameriprise Financial, Inc. 56,540 2,300,613 - -------------------------------------------------------------------------------- Bank of New York Co., Inc. (The) 196,500 6,250,665 - -------------------------------------------------------------------------------- Knight Capital Group, Inc., Cl. A 1 3,900 44,421 - -------------------------------------------------------------------------------- Mellon Financial Corp. 56,200 1,982,174 - -------------------------------------------------------------------------------- Northern Trust Corp. 45,400 2,370,334 - -------------------------------------------------------------------------------- TD Ameritrade Holding Corp. 108,000 2,185,920 -------------- 15,134,127 - -------------------------------------------------------------------------------- COMMERCIAL BANKS--4.1% Astoria Financial Corp. 65,050 1,873,440 - -------------------------------------------------------------------------------- Bank of America Corp. 1,029,441 45,532,176 - -------------------------------------------------------------------------------- Bank of Hawaii Corp. 15,000 783,150 - -------------------------------------------------------------------------------- BB&T Corp. 68,100 2,658,624 - -------------------------------------------------------------------------------- Comerica, Inc. 57,200 3,172,884 - -------------------------------------------------------------------------------- Corus Bankshares, Inc. 16,300 1,046,623 - -------------------------------------------------------------------------------- Fifth Third Bancorp 27,700 1,040,689 - -------------------------------------------------------------------------------- FirstFed Financial Corp. 1 10,700 670,890 - -------------------------------------------------------------------------------- Golden West Financial Corp. 33,100 2,337,522 - -------------------------------------------------------------------------------- Greater Bay Bancorp 7,800 202,332 - -------------------------------------------------------------------------------- KeyCorp 108,400 3,836,276 - -------------------------------------------------------------------------------- M&T Bank Corp. 20,300 2,198,490 - -------------------------------------------------------------------------------- MAF Bancorp, Inc. 2,800 120,372 - -------------------------------------------------------------------------------- National City Corp. 145,200 4,962,936 - -------------------------------------------------------------------------------- PNC Financial Services Group, Inc. 44,500 2,886,270 - -------------------------------------------------------------------------------- Provident Bankshares Corp. 1,400 51,422 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- COMMERCIAL BANKS Continued Provident Financial Services, Inc. 1,100 $ 20,130 - -------------------------------------------------------------------------------- Regions Financial Corp. 73,700 2,445,366 - -------------------------------------------------------------------------------- SunTrust Banks, Inc. 68,800 4,915,760 - -------------------------------------------------------------------------------- U.S. Bancorp 588,900 17,613,999 - -------------------------------------------------------------------------------- UnionBanCal Corp. 42,600 2,858,034 - -------------------------------------------------------------------------------- Wachovia Corp. 275,000 15,078,250 - -------------------------------------------------------------------------------- Washington Mutual, Inc. 60,855 2,575,384 - -------------------------------------------------------------------------------- Wells Fargo & Co. 202,900 12,652,844 -------------- 131,533,863 - -------------------------------------------------------------------------------- CONSUMER FINANCE--0.0% Nelnet, Inc., Cl. A 1 11,200 460,320 - -------------------------------------------------------------------------------- DIVERSIFIED FINANCIAL SERVICES--7.5% Advanta Corp., Cl. B 15,800 546,838 - -------------------------------------------------------------------------------- American Express Co. 210,900 11,061,705 - -------------------------------------------------------------------------------- AmeriCredit Corp. 1 113,600 3,267,136 - -------------------------------------------------------------------------------- Asset Acceptance Capital Corp. 1 50,600 1,234,640 - -------------------------------------------------------------------------------- Capital One Financial Corp. 125,164 10,426,161 - -------------------------------------------------------------------------------- CapitalSource, Inc. 600 13,176 - -------------------------------------------------------------------------------- Chicago Mercantile Exchange (The) 18,100 7,660,825 - -------------------------------------------------------------------------------- CIT Group, Inc. 114,100 6,086,094 - -------------------------------------------------------------------------------- Citigroup, Inc. 1,205,000 56,128,900 - -------------------------------------------------------------------------------- CompuCredit Corp. 1 12,100 485,936 - -------------------------------------------------------------------------------- Eaton Vance Corp. 13,900 400,598 - -------------------------------------------------------------------------------- Goldman Sachs Group, Inc. (The) 169,100 23,885,375 - -------------------------------------------------------------------------------- Janus Capital Group, Inc. 93,000 1,942,770 - -------------------------------------------------------------------------------- Jefferies Group, Inc. 2,700 147,069 - -------------------------------------------------------------------------------- JPMorgan Chase & Co. 831,352 33,046,242 - -------------------------------------------------------------------------------- Lehman Brothers Holdings, Inc. 115,500 16,221,975 - -------------------------------------------------------------------------------- Merrill Lynch & Co., Inc. 320,000 24,022,400 - -------------------------------------------------------------------------------- Moody's Corp. 24,400 1,545,008 - -------------------------------------------------------------------------------- Morgan Stanley 432,200 26,558,690 21 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF INVESTMENTS Unaudited / Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- DIVERSIFIED FINANCIAL SERVICES Continued Piper Jaffray Cos., Inc. 1 2,200 $ 98,626 - -------------------------------------------------------------------------------- Raymond James Financial, Inc. 4,100 174,496 - -------------------------------------------------------------------------------- Schwab (Charles) Corp. 509,600 7,536,984 - -------------------------------------------------------------------------------- SEI Investments Co. 12,000 495,000 - -------------------------------------------------------------------------------- State Street Corp. 105,500 6,378,530 - -------------------------------------------------------------------------------- Student Loan Corp. (The) 4,800 1,051,200 - -------------------------------------------------------------------------------- WFS Financial, Inc. 1 1,800 143,100 -------------- 240,559,474 - -------------------------------------------------------------------------------- INSURANCE--4.7% AFLAC, Inc. 86,500 4,061,175 - -------------------------------------------------------------------------------- Allstate Corp. 146,400 7,620,120 - -------------------------------------------------------------------------------- AMBAC Financial Group, Inc. 8,300 637,523 - -------------------------------------------------------------------------------- American International Group, Inc. 460,500 30,144,330 - -------------------------------------------------------------------------------- AmerUs Group Co. 23,400 1,436,058 - -------------------------------------------------------------------------------- Aon Corp. 179,300 6,135,646 - -------------------------------------------------------------------------------- Arch Capital Group Ltd. 1 25,000 1,358,500 - -------------------------------------------------------------------------------- Argonaut Group, Inc. 1 37,600 1,336,680 - -------------------------------------------------------------------------------- Berkley (W.R.) Corp. 7,900 390,260 - -------------------------------------------------------------------------------- Chubb Corp. 46,800 4,415,580 - -------------------------------------------------------------------------------- Commerce Group, Inc. (The) 2,500 134,750 - -------------------------------------------------------------------------------- Delphi Financial Group, Inc., Cl. A 23,000 1,096,180 - -------------------------------------------------------------------------------- Donegal Group, Inc., Cl. A 5,100 118,575 - -------------------------------------------------------------------------------- Erie Indemnity Co., Cl. A 600 31,800 - -------------------------------------------------------------------------------- Everest Re Group Ltd. 11,500 1,111,475 - -------------------------------------------------------------------------------- Fidelity National Financial, Inc. 80,536 3,178,756 - -------------------------------------------------------------------------------- Fidelity National Title Group, Inc., Cl. A 10,366 252,723 - -------------------------------------------------------------------------------- Genworth Financial, Inc., Cl. A 148,000 4,848,480 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- INSURANCE Continued Great American Financial Resources, Inc. 6,100 $ 139,385 - -------------------------------------------------------------------------------- Harleysville Group, Inc. 400 11,024 - -------------------------------------------------------------------------------- Hartford Financial Services Group, Inc. (The) 117,400 9,653,802 - -------------------------------------------------------------------------------- Horace Mann Educators Corp. 57,800 1,132,302 - -------------------------------------------------------------------------------- Infinity Property & Casualty Corp. 37,600 1,450,608 - -------------------------------------------------------------------------------- Jefferson-Pilot Corp. 10,100 589,133 - -------------------------------------------------------------------------------- LandAmerica Financial Group, Inc. 10,200 672,996 - -------------------------------------------------------------------------------- Lincoln National Corp. 26,700 1,455,951 - -------------------------------------------------------------------------------- Loews Corp. 18,900 1,865,241 - -------------------------------------------------------------------------------- MBIA, Inc. 60,900 3,749,004 - -------------------------------------------------------------------------------- MetLife, Inc. 209,700 10,518,552 - -------------------------------------------------------------------------------- Ohio Casualty Corp. 77,300 2,329,822 - -------------------------------------------------------------------------------- Old Republic International Corp. 12,875 276,169 - -------------------------------------------------------------------------------- Phoenix Cos., Inc. (The) 2 119,100 1,797,219 - -------------------------------------------------------------------------------- Principal Financial Group, Inc. (The) 196,000 9,243,360 - -------------------------------------------------------------------------------- Progressive Corp. 32,900 3,455,816 - -------------------------------------------------------------------------------- Protective Life Corp. 6,100 274,195 - -------------------------------------------------------------------------------- Prudential Financial, Inc. 144,400 10,879,096 - -------------------------------------------------------------------------------- RLI Corp. 1,800 98,370 - -------------------------------------------------------------------------------- Safeco Corp. 30,600 1,598,850 - -------------------------------------------------------------------------------- Selective Insurance Group, Inc. 27,500 1,595,000 - -------------------------------------------------------------------------------- St. Paul Travelers Cos., Inc. (The) 280,000 12,706,400 - -------------------------------------------------------------------------------- StanCorp Financial Group, Inc. 28,400 1,412,900 - -------------------------------------------------------------------------------- State Auto Financial Corp. 26,900 1,034,843 - -------------------------------------------------------------------------------- Stewart Information Services Corp. 11,400 609,330 - -------------------------------------------------------------------------------- Torchmark Corp. 25,400 1,424,940 22 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- INSURANCE Continued Transatlantic Holdings, Inc. 400 $ 25,340 - -------------------------------------------------------------------------------- UICI 38,600 1,410,058 - -------------------------------------------------------------------------------- United Fire & Casualty Co. 7,000 287,140 - -------------------------------------------------------------------------------- Unitrin, Inc. 23,300 1,030,093 - -------------------------------------------------------------------------------- Zenith National Insurance Corp. 20,850 1,152,797 -------------- 152,188,347 - -------------------------------------------------------------------------------- REAL ESTATE--0.0% Stratus Properties, Inc. 1 2,300 54,183 - -------------------------------------------------------------------------------- THRIFTS & MORTGAGE FINANCE--1.1% Accredited Home Lenders Holding Co. 1 35,900 1,885,827 - -------------------------------------------------------------------------------- Commercial Capital Bancorp, Inc. 37,800 590,058 - -------------------------------------------------------------------------------- Countrywide Financial Corp. 218,100 7,293,264 - -------------------------------------------------------------------------------- Fannie Mae 200,000 11,588,000 - -------------------------------------------------------------------------------- Freddie Mac 108,600 7,369,596 - -------------------------------------------------------------------------------- Fremont General Corp. 25,300 619,850 - -------------------------------------------------------------------------------- MGIC Investment Corp. 45,600 3,010,056 - -------------------------------------------------------------------------------- PMI Group, Inc. (The) 40,900 1,768,107 - -------------------------------------------------------------------------------- Radian Group, Inc. 54,800 3,136,204 -------------- 37,260,962 - -------------------------------------------------------------------------------- HEALTH CARE--13.2% - -------------------------------------------------------------------------------- BIOTECHNOLOGY--2.1% Abgenix, Inc. 1 50,400 1,112,328 - -------------------------------------------------------------------------------- Alkermes, Inc. 1 77,300 1,881,482 - -------------------------------------------------------------------------------- Amgen, Inc. 1 420,000 30,613,800 - -------------------------------------------------------------------------------- Applera Corp./Applied Biosystems Group 116,100 3,290,274 - -------------------------------------------------------------------------------- Biogen Idec, Inc. 1 12,600 563,850 - -------------------------------------------------------------------------------- Cubist Pharmaceuticals, Inc. 1 29,600 640,544 - -------------------------------------------------------------------------------- Genentech, Inc. 1 10,600 910,752 - -------------------------------------------------------------------------------- Genzyme Corp. (General Division) 1 14,000 993,160 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- BIOTECHNOLOGY Continued Gilead Sciences, Inc. 1 94,700 $ 5,764,389 - -------------------------------------------------------------------------------- MedImmune, Inc. 1 18,200 620,984 - -------------------------------------------------------------------------------- Sepracor, Inc. 1 25,300 1,439,823 - -------------------------------------------------------------------------------- Techne Corp. 1 33,100 1,881,735 - -------------------------------------------------------------------------------- Wyeth 377,100 17,440,875 -------------- 67,153,996 - -------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SUPPLIES--1.3% Baxter International, Inc. 156,100 5,752,285 - -------------------------------------------------------------------------------- Becton, Dickinson & Co. 107,300 6,953,040 - -------------------------------------------------------------------------------- Bio-Rad Laboratories, Inc., Cl. A 1 3,600 242,640 - -------------------------------------------------------------------------------- Boston Scientific Corp. 1 52,500 1,148,175 - -------------------------------------------------------------------------------- Cynosure, Inc., Cl. A 1 46,900 959,105 - -------------------------------------------------------------------------------- Guidant Corp. 52,400 3,856,640 - -------------------------------------------------------------------------------- Idexx Laboratories, Inc. 1 19,000 1,459,580 - -------------------------------------------------------------------------------- Kinetic Concepts, Inc. 1 33,900 1,226,841 - -------------------------------------------------------------------------------- Medtronic, Inc. 189,900 10,723,653 - -------------------------------------------------------------------------------- Mentor Corp. 50,500 2,272,500 - -------------------------------------------------------------------------------- Millipore Corp. 1 23,900 1,643,842 - -------------------------------------------------------------------------------- PerkinElmer, Inc. 64,200 1,459,908 - -------------------------------------------------------------------------------- Thermo Electron Corp. 1 20,500 689,620 - -------------------------------------------------------------------------------- Thoratec Corp. 1 1,800 45,540 - -------------------------------------------------------------------------------- Varian, Inc. 1 18,400 706,008 - -------------------------------------------------------------------------------- Waters Corp. 1 47,100 1,975,845 -------------- 41,115,222 - -------------------------------------------------------------------------------- HEALTH CARE PROVIDERS & SERVICES--4.9% Aetna, Inc. 90,400 8,750,720 - -------------------------------------------------------------------------------- American Healthways, Inc. 1 30,000 1,340,400 - -------------------------------------------------------------------------------- AmerisourceBergen Corp. 85,600 3,735,584 - -------------------------------------------------------------------------------- Beverly Enterprises, Inc. 1 127,700 1,559,217 23 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF INVESTMENTS Unaudited / Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- HEALTH CARE PROVIDERS & SERVICES Continued Cardinal Health, Inc. 157,300 $ 11,331,892 - -------------------------------------------------------------------------------- Caremark Rx, Inc. 1 233,400 11,506,620 - -------------------------------------------------------------------------------- CIGNA Corp. 87,200 10,603,520 - -------------------------------------------------------------------------------- Coventry Health Care, Inc. 1 46,350 2,761,070 - -------------------------------------------------------------------------------- Express Scripts, Inc. 1 86,000 7,850,940 - -------------------------------------------------------------------------------- Genesis HealthCare Corp. 1 34,000 1,246,100 - -------------------------------------------------------------------------------- HCA, Inc. 199,600 9,796,368 - -------------------------------------------------------------------------------- Health Net, Inc. 62,400 3,080,688 - -------------------------------------------------------------------------------- Humana, Inc. 1 74,500 4,154,865 - -------------------------------------------------------------------------------- IMS Health, Inc. 57,067 1,403,848 - -------------------------------------------------------------------------------- Magellan Health Services, Inc. 1 18,800 685,824 - -------------------------------------------------------------------------------- Manor Care, Inc. 38,300 1,497,530 - -------------------------------------------------------------------------------- McKesson Corp. 199,500 10,573,500 - -------------------------------------------------------------------------------- Medco Health Solutions, Inc. 1 187,272 10,131,415 - -------------------------------------------------------------------------------- Omnicare, Inc. 28,700 1,426,390 - -------------------------------------------------------------------------------- Pediatrix Medical Group, Inc. 1 29,100 2,551,488 - -------------------------------------------------------------------------------- Quest Diagnostics, Inc. 120,200 5,941,486 - -------------------------------------------------------------------------------- Schein (Henry), Inc. 1 58,400 2,723,776 - -------------------------------------------------------------------------------- Sierra Health Services, Inc. 1 62,600 2,480,212 - -------------------------------------------------------------------------------- Trizetto Group, Inc. 1 69,800 1,281,528 - -------------------------------------------------------------------------------- UnitedHealth Group, Inc. 314,650 18,696,503 - -------------------------------------------------------------------------------- Universal Health Services, Inc., Cl. B 22,300 1,059,473 - -------------------------------------------------------------------------------- WellCare Health Plans, Inc. 1 29,600 1,196,728 - -------------------------------------------------------------------------------- WellPoint, Inc. 1 243,990 18,738,432 -------------- 158,106,117 - -------------------------------------------------------------------------------- PHARMACEUTICALS--4.9% Abbott Laboratories 248,300 10,714,145 - -------------------------------------------------------------------------------- Allergan, Inc. 56,900 6,623,160 - -------------------------------------------------------------------------------- Alpharma, Inc., Cl. A 55,000 1,839,750 - -------------------------------------------------------------------------------- Andrx Corp. 1 36,200 635,310 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- PHARMACEUTICALS Continued Barr Pharmaceuticals, Inc. 1 39,100 $ 2,564,178 - -------------------------------------------------------------------------------- Bristol-Myers Squibb Co. 219,000 4,991,010 - -------------------------------------------------------------------------------- Eli Lilly & Co. 51,600 2,921,592 - -------------------------------------------------------------------------------- Endo Pharmaceuticals Holdings, Inc. 1 70,100 2,011,870 - -------------------------------------------------------------------------------- Forest Laboratories, Inc. 1 148,100 6,854,068 - -------------------------------------------------------------------------------- Johnson & Johnson 704,400 40,531,176 - -------------------------------------------------------------------------------- King Pharmaceuticals, Inc. 1 182,600 3,423,750 - -------------------------------------------------------------------------------- Kos Pharmaceuticals, Inc. 1 45,000 1,971,450 - -------------------------------------------------------------------------------- Medicis Pharmaceutical Corp., Cl. A 12,300 380,193 - -------------------------------------------------------------------------------- Merck & Co., Inc. 585,700 20,206,650 - -------------------------------------------------------------------------------- Mylan Laboratories, Inc. 52,600 1,036,220 - -------------------------------------------------------------------------------- Pfizer, Inc. 1,938,500 49,780,680 - -------------------------------------------------------------------------------- Watson Pharmaceuticals, Inc. 1 85,100 2,815,959 -------------- 159,301,161 - -------------------------------------------------------------------------------- INDUSTRIALS--10.8% - -------------------------------------------------------------------------------- AEROSPACE & DEFENSE--3.1% Alliant Techsystems, Inc. 1 35,200 2,728,000 - -------------------------------------------------------------------------------- Armor Holdings, Inc. 1 3,200 152,544 - -------------------------------------------------------------------------------- BE Aerospace, Inc. 1 51,800 1,088,836 - -------------------------------------------------------------------------------- Boeing Co. 375,000 25,616,250 - -------------------------------------------------------------------------------- DRS Technologies, Inc. 17,300 859,637 - -------------------------------------------------------------------------------- General Dynamics Corp. 66,400 7,726,304 - -------------------------------------------------------------------------------- Honeywell International, Inc. 255,700 9,823,994 - -------------------------------------------------------------------------------- Lockheed Martin Corp. 167,300 11,317,845 - -------------------------------------------------------------------------------- Northrop Grumman Corp. 197,300 12,258,249 - -------------------------------------------------------------------------------- Precision Castparts Corp. 67,400 3,366,630 24 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- AEROSPACE & DEFENSE Continued Raytheon Co. 274,900 $ 11,262,653 - -------------------------------------------------------------------------------- United Technologies Corp. 211,400 12,339,418 -------------- 98,540,360 - -------------------------------------------------------------------------------- AIR FREIGHT & LOGISTICS--0.1% EGL, Inc. 1 39,600 1,620,036 - -------------------------------------------------------------------------------- Forward Air Corp. 3,500 136,500 - -------------------------------------------------------------------------------- Hub Group, Inc., Cl. A 1 21,800 923,230 -------------- 2,679,766 - -------------------------------------------------------------------------------- AIRLINES--0.2% Alaska Air Group, Inc. 1 43,800 1,398,534 - -------------------------------------------------------------------------------- AMR Corp. 1 150,000 3,405,000 - -------------------------------------------------------------------------------- Continental Airlines, Inc., Cl. B 1,2 103,000 2,153,730 - -------------------------------------------------------------------------------- SkyWest, Inc. 5,900 172,162 -------------- 7,129,426 - -------------------------------------------------------------------------------- BUILDING PRODUCTS--0.5% American Standard Cos., Inc. 68,800 2,476,800 - -------------------------------------------------------------------------------- Builders FirstSource, Inc. 1 7,100 177,784 - -------------------------------------------------------------------------------- Crane Co. 75,900 2,832,588 - -------------------------------------------------------------------------------- Lennox International, Inc. 14,400 460,080 - -------------------------------------------------------------------------------- Masco Corp. 177,900 5,274,735 - -------------------------------------------------------------------------------- Universal Forest Products, Inc. 10,300 589,881 - -------------------------------------------------------------------------------- USG Corp. 1 42,100 4,007,920 -------------- 15,819,788 - -------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES--1.0% Administaff, Inc. 13,600 585,344 - -------------------------------------------------------------------------------- Cendant Corp. 522,400 8,744,976 - -------------------------------------------------------------------------------- Corporate Executive Board Co. 21,900 1,842,666 - -------------------------------------------------------------------------------- Deluxe Corp. 42,300 1,132,794 - -------------------------------------------------------------------------------- Dun & Bradstreet Corp. 1 30,400 2,197,312 - -------------------------------------------------------------------------------- HNI Corp. 52,600 3,035,020 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES Continued Labor Ready, Inc. 1 1,800 $ 41,922 - -------------------------------------------------------------------------------- Manpower, Inc. 52,100 2,804,543 - -------------------------------------------------------------------------------- Miller (Herman), Inc. 53,100 1,608,930 - -------------------------------------------------------------------------------- PHH Corp. 1 48,200 1,388,642 - -------------------------------------------------------------------------------- Pitney Bowes, Inc. 66,100 2,825,114 - -------------------------------------------------------------------------------- Robert Half International, Inc. 55,800 2,038,374 - -------------------------------------------------------------------------------- TeleTech Holdings, Inc. 1 65,500 763,730 - -------------------------------------------------------------------------------- Tetra Tech, Inc. 1 31,100 520,925 - -------------------------------------------------------------------------------- United Stationers, Inc. 1 16,400 820,492 - -------------------------------------------------------------------------------- Waste Management, Inc. 75,800 2,393,764 -------------- 32,744,548 - -------------------------------------------------------------------------------- CONSTRUCTION & ENGINEERING--0.2% EMCOR Group, Inc. 1 9,100 746,382 - -------------------------------------------------------------------------------- Foster Wheeler Ltd. 1 14,200 699,350 - -------------------------------------------------------------------------------- Granite Construction, Inc. 2,700 109,296 - -------------------------------------------------------------------------------- Quanta Services, Inc. 1 81,700 1,131,545 - -------------------------------------------------------------------------------- URS Corp. 1 60,000 2,566,800 -------------- 5,253,373 - -------------------------------------------------------------------------------- ELECTRICAL EQUIPMENT--0.5% Acuity Brands, Inc. 34,600 1,310,994 - -------------------------------------------------------------------------------- Emerson Electric Co. 32,700 2,532,615 - -------------------------------------------------------------------------------- General Cable Corp. 1 51,500 1,261,750 - -------------------------------------------------------------------------------- Genlyte Group, Inc. (The) 1 1,800 104,112 - -------------------------------------------------------------------------------- Rockwell Automation, Inc. 126,500 8,357,855 - -------------------------------------------------------------------------------- Roper Industries, Inc. 57,700 2,328,195 - -------------------------------------------------------------------------------- Woodward Governor Co. 10,100 944,855 -------------- 16,840,376 - -------------------------------------------------------------------------------- INDUSTRIAL CONGLOMERATES--2.7% 3M Co. 67,600 4,917,900 - -------------------------------------------------------------------------------- General Electric Co. 2,132,900 69,852,475 - -------------------------------------------------------------------------------- Teleflex, Inc. 38,400 2,421,888 25 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF INVESTMENTS Unaudited / Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- INDUSTRIAL CONGLOMERATES Continued Tyco International Ltd. 422,300 $ 11,000,915 -------------- 88,193,178 - -------------------------------------------------------------------------------- MACHINERY--1.5% AGCO Corp. 1 81,700 1,471,417 - -------------------------------------------------------------------------------- Albany International Corp., Cl. A 32,900 1,217,300 - -------------------------------------------------------------------------------- Caterpillar, Inc. 154,200 10,470,180 - -------------------------------------------------------------------------------- Cummins, Inc. 8,200 797,860 - -------------------------------------------------------------------------------- Danaher Corp. 34,000 1,925,760 - -------------------------------------------------------------------------------- Deere & Co. 41,400 2,970,864 - -------------------------------------------------------------------------------- Eaton Corp. 4,800 317,760 - -------------------------------------------------------------------------------- Esterline Technologies Corp. 1 6,400 264,768 - -------------------------------------------------------------------------------- Flowserve Corp. 1 67,200 3,089,856 - -------------------------------------------------------------------------------- Illinois Tool Works, Inc. 97,400 8,209,846 - -------------------------------------------------------------------------------- Ingersoll-Rand Co. Ltd., Cl. A 159,200 6,251,784 - -------------------------------------------------------------------------------- ITT Industries, Inc. 26,600 2,726,500 - -------------------------------------------------------------------------------- Kaydon Corp. 12,000 401,280 - -------------------------------------------------------------------------------- Lincoln Electric Holdings, Inc. 3,800 169,138 - -------------------------------------------------------------------------------- Manitowoc Co., Inc. (The) 15,300 1,017,450 - -------------------------------------------------------------------------------- NACCO Industries, Inc., Cl. A 6,000 821,040 - -------------------------------------------------------------------------------- Nordson Corp. 200 9,084 - -------------------------------------------------------------------------------- Parker-Hannifin Corp. 36,500 2,765,605 - -------------------------------------------------------------------------------- SPX Corp. 59,000 2,814,890 - -------------------------------------------------------------------------------- Terex Corp. 1 20,800 1,466,400 - -------------------------------------------------------------------------------- Wabtec Corp. 3,400 107,338 -------------- 49,286,120 - -------------------------------------------------------------------------------- ROAD & RAIL--0.8% Amerco, Inc. 7,500 607,725 - -------------------------------------------------------------------------------- Arkansas Best Corp. 36,900 1,579,689 - -------------------------------------------------------------------------------- Burlington Northern Santa Fe Corp. 118,700 9,510,244 - -------------------------------------------------------------------------------- Laidlaw International, Inc. 7,600 206,720 - -------------------------------------------------------------------------------- Landstar System, Inc. 41,400 1,751,220 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- ROAD & RAIL Continued Norfolk Southern Corp. 216,400 $ 10,785,376 - -------------------------------------------------------------------------------- Pacer International, Inc. 56,300 1,642,271 - -------------------------------------------------------------------------------- Union Pacific Corp. 3,500 309,610 -------------- 26,392,855 - -------------------------------------------------------------------------------- TRADING COMPANIES & DISTRIBUTORS--0.2% Applied Industrial Technologies, Inc. 28,350 1,204,875 - -------------------------------------------------------------------------------- MSC Industrial Direct Co., Inc., Cl. A 23,300 1,046,869 - -------------------------------------------------------------------------------- UAP Holding Corp. 52,900 1,119,364 - -------------------------------------------------------------------------------- United Rentals, Inc. 1 64,300 1,884,633 -------------- 5,255,741 - -------------------------------------------------------------------------------- INFORMATION TECHNOLOGY--21.4% - -------------------------------------------------------------------------------- COMMUNICATIONS EQUIPMENT--3.6% ADTRAN, Inc. 80,400 2,358,132 - -------------------------------------------------------------------------------- Avaya, Inc. 1 210,000 2,215,500 - -------------------------------------------------------------------------------- Avocent Corp. 1 25,900 861,693 - -------------------------------------------------------------------------------- Brocade Communications Systems, Inc. 1 390,000 1,794,000 - -------------------------------------------------------------------------------- Ciena Corp. 1 375,000 1,500,000 - -------------------------------------------------------------------------------- Cisco Systems, Inc. 1 1,751,700 32,529,069 - -------------------------------------------------------------------------------- CommScope, Inc. 1 68,600 1,516,746 - -------------------------------------------------------------------------------- Corning, Inc. 284,800 6,934,880 - -------------------------------------------------------------------------------- Emulex Corp. 1 87,300 1,601,955 - -------------------------------------------------------------------------------- Foundry Networks, Inc. 1 1,400 21,042 - -------------------------------------------------------------------------------- Harris Corp. 18,200 845,026 - -------------------------------------------------------------------------------- Juniper Networks, Inc. 1 278,700 5,052,831 - -------------------------------------------------------------------------------- Lucent Technologies, Inc. 1 2,522,203 6,658,616 - -------------------------------------------------------------------------------- Motorola, Inc. 970,000 22,028,700 - -------------------------------------------------------------------------------- Polycom, Inc. 1 113,900 2,207,382 - -------------------------------------------------------------------------------- QLogic Corp. 1 73,400 2,911,778 - -------------------------------------------------------------------------------- QUALCOMM, Inc. 398,500 19,112,060 - -------------------------------------------------------------------------------- Redback Networks, Inc. 1 79,100 1,332,835 - -------------------------------------------------------------------------------- Scientific-Atlanta, Inc. 74,700 3,194,172 26 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- COMMUNICATIONS EQUIPMENT Continued Tellabs, Inc. 1 143,100 $ 1,830,249 -------------- 116,506,666 - -------------------------------------------------------------------------------- COMPUTERS & PERIPHERALS--4.3% Apple Computer, Inc. 1 121,000 9,136,710 - -------------------------------------------------------------------------------- Dell, Inc. 1 1,000,000 29,310,000 - -------------------------------------------------------------------------------- EMC Corp. 1 1,021,300 13,685,420 - -------------------------------------------------------------------------------- Hewlett-Packard Co. 993,700 30,983,566 - -------------------------------------------------------------------------------- Imation Corp. 38,800 1,758,804 - -------------------------------------------------------------------------------- Intergraph Corp. 1 27,400 1,046,954 - -------------------------------------------------------------------------------- Intermec, Inc. 1 29,200 1,018,204 - -------------------------------------------------------------------------------- International Business Machines Corp. 410,000 33,333,000 - -------------------------------------------------------------------------------- Lexmark International, Inc., Cl. A 1 70,000 3,399,900 - -------------------------------------------------------------------------------- NCR Corp. 1 94,400 3,506,960 - -------------------------------------------------------------------------------- Network Appliance, Inc. 1 43,000 1,341,600 - -------------------------------------------------------------------------------- Palm, Inc. 1 58,400 2,305,632 - -------------------------------------------------------------------------------- Sun Microsystems, Inc. 1 379,700 1,708,650 - -------------------------------------------------------------------------------- Western Digital Corp. 1 196,700 4,299,862 -------------- 136,835,262 - -------------------------------------------------------------------------------- ELECTRONIC EQUIPMENT & INSTRUMENTS--1.3% Agilent Technologies, Inc. 1 265,000 8,986,150 - -------------------------------------------------------------------------------- Arrow Electronics, Inc. 1 88,000 3,023,680 - -------------------------------------------------------------------------------- Avnet, Inc. 1 117,300 2,867,985 - -------------------------------------------------------------------------------- Belden CDT, Inc. 50,100 1,357,710 - -------------------------------------------------------------------------------- Brightpoint, Inc. 1 75,000 1,694,250 - -------------------------------------------------------------------------------- CDW Corp. 35,200 1,971,200 - -------------------------------------------------------------------------------- Coherent, Inc. 1 39,900 1,235,304 - -------------------------------------------------------------------------------- Electro Scientific Industries, Inc. 1 8,500 216,495 - -------------------------------------------------------------------------------- Jabil Circuit, Inc. 1 89,700 3,623,880 - -------------------------------------------------------------------------------- Komag, Inc. 1 75,900 3,571,854 - -------------------------------------------------------------------------------- Mettler-Toledo International, Inc. 1 45,500 2,633,995 - -------------------------------------------------------------------------------- National Instruments Corp. 23,400 774,306 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- ELECTRONIC EQUIPMENT & INSTRUMENTS Continued Plexus Corp. 1 75,500 $ 2,137,405 - -------------------------------------------------------------------------------- Sanmina-SCI Corp. 1 620,000 2,610,200 - -------------------------------------------------------------------------------- Solectron Corp. 1 777,500 2,970,050 - -------------------------------------------------------------------------------- Tech Data Corp. 1 65,400 2,696,442 - -------------------------------------------------------------------------------- Tektronix, Inc. 5,500 162,250 -------------- 42,533,156 - -------------------------------------------------------------------------------- INTERNET SOFTWARE & SERVICES--0.9% Check Point Software Technologies Ltd. 1 104,500 2,261,380 - -------------------------------------------------------------------------------- Digital Insight Corp. 1 1,600 57,392 - -------------------------------------------------------------------------------- Digital River, Inc. 1 53,700 1,803,246 - -------------------------------------------------------------------------------- EarthLink, Inc. 1 163,900 1,871,738 - -------------------------------------------------------------------------------- Google, Inc., Cl. A 1 16,200 7,018,650 - -------------------------------------------------------------------------------- HomeStore.com, Inc. 1 16,600 100,264 - -------------------------------------------------------------------------------- InfoSpace, Inc. 1 56,800 1,341,048 - -------------------------------------------------------------------------------- Internet Security Systems, Inc. 1 70,900 1,511,588 - -------------------------------------------------------------------------------- MicroStrategy, Inc., Cl. A 1 20,600 1,979,866 - -------------------------------------------------------------------------------- Open Text Corp. 1 14,900 246,893 - -------------------------------------------------------------------------------- RealNetworks, Inc. 1 143,100 1,151,955 - -------------------------------------------------------------------------------- Salesforce.com, Inc. 1 9,000 369,450 - -------------------------------------------------------------------------------- United Online, Inc. 111,100 1,518,737 - -------------------------------------------------------------------------------- VeriSign, Inc. 1 64,900 1,541,375 - -------------------------------------------------------------------------------- Websense, Inc. 1 16,900 1,114,217 - -------------------------------------------------------------------------------- Yahoo!, Inc. 1 180,000 6,181,200 -------------- 30,068,999 - -------------------------------------------------------------------------------- IT SERVICES--1.4% Acxiom Corp. 30,000 710,100 - -------------------------------------------------------------------------------- BISYS Group, Inc. (The) 1 106,900 1,548,981 - -------------------------------------------------------------------------------- CACI International, Inc., Cl. A 1 31,500 1,798,650 - -------------------------------------------------------------------------------- Ceridian Corp. 1 81,000 1,999,080 - -------------------------------------------------------------------------------- CheckFree Corp. 1 41,200 2,134,984 - -------------------------------------------------------------------------------- Computer Sciences Corp. 1 79,800 4,045,860 - -------------------------------------------------------------------------------- CSG Systems International, Inc. 1 64,500 1,468,665 27 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF INVESTMENTS Unaudited / Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- IT SERVICES Continued Electronic Data Systems Corp. 57,300 $ 1,443,387 - -------------------------------------------------------------------------------- First Data Corp. 330,000 14,883,000 - -------------------------------------------------------------------------------- Fiserv, Inc. 1 86,300 3,795,474 - -------------------------------------------------------------------------------- Global Payments, Inc. 40,600 2,067,758 - -------------------------------------------------------------------------------- Lawson Software, Inc. 1 141,900 1,044,384 - -------------------------------------------------------------------------------- Maximus, Inc. 38,200 1,494,384 - -------------------------------------------------------------------------------- MoneyGram International, Inc. 5,000 132,800 - -------------------------------------------------------------------------------- MPS Group, Inc. 1 104,600 1,486,366 - -------------------------------------------------------------------------------- Perot Systems Corp., Cl. A 1 6,600 99,462 - -------------------------------------------------------------------------------- Sabre Holdings Corp. 123,800 3,033,100 - -------------------------------------------------------------------------------- Total System Services, Inc. 24,500 480,935 - -------------------------------------------------------------------------------- Unisys Corp. 1 113,000 755,970 -------------- 44,423,340 - -------------------------------------------------------------------------------- OFFICE ELECTRONICS--0.2% Xerox Corp. 1 566,900 8,112,339 - -------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT--4.8% Advanced Micro Devices, Inc. 1 35,000 1,465,100 - -------------------------------------------------------------------------------- Analog Devices, Inc. 252,600 10,045,902 - -------------------------------------------------------------------------------- Applied Materials, Inc. 594,300 11,321,415 - -------------------------------------------------------------------------------- Broadcom Corp., Cl. A 1 193,400 13,189,880 - -------------------------------------------------------------------------------- Cirrus Logic, Inc. 1 50,000 423,500 - -------------------------------------------------------------------------------- Conexant Systems, Inc. 1 68,200 229,152 - -------------------------------------------------------------------------------- Cymer, Inc. 1 43,000 1,941,020 - -------------------------------------------------------------------------------- Fairchild Semiconductor International, Inc., Cl. A 1 39,400 786,030 - -------------------------------------------------------------------------------- Freescale Semiconductor, Inc., Cl. B 1 286,882 7,243,771 - -------------------------------------------------------------------------------- Intel Corp. 1,962,700 41,746,629 - -------------------------------------------------------------------------------- Intersil Corp., Cl. A 111,900 3,251,814 - -------------------------------------------------------------------------------- KLA-Tencor Corp. 98,900 5,140,822 - -------------------------------------------------------------------------------- Lam Research Corp. 1 85,800 3,983,694 - -------------------------------------------------------------------------------- Linear Technology Corp. 31,500 1,172,115 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT Continued LSI Logic Corp. 1 336,400 $ 3,078,060 - -------------------------------------------------------------------------------- Micrel, Inc. 1 76,300 936,201 - -------------------------------------------------------------------------------- Microchip Technology, Inc. 104,100 3,904,791 - -------------------------------------------------------------------------------- Microsemi Corp. 1 44,500 1,354,580 - -------------------------------------------------------------------------------- MKS Instruments, Inc. 1 31,200 678,600 - -------------------------------------------------------------------------------- National Semiconductor Corp. 145,500 4,104,555 - -------------------------------------------------------------------------------- Novellus Systems, Inc. 1 111,700 3,166,695 - -------------------------------------------------------------------------------- NVIDIA Corp. 1 91,600 4,118,336 - -------------------------------------------------------------------------------- OmniVision Technologies, Inc. 1 101,900 2,570,937 - -------------------------------------------------------------------------------- ON Semiconductor Corp. 1 212,500 1,595,875 - -------------------------------------------------------------------------------- Silicon Laboratories, Inc. 1 23,800 1,171,674 - -------------------------------------------------------------------------------- Texas Instruments, Inc. 754,600 22,056,958 - -------------------------------------------------------------------------------- Varian Semiconductor Equipment Associates, Inc. 1 17,900 886,587 - -------------------------------------------------------------------------------- Zoran Corp. 1 90,000 1,764,900 -------------- 153,329,593 - -------------------------------------------------------------------------------- SOFTWARE--4.9% Adobe Systems, Inc. 160,000 6,355,200 - -------------------------------------------------------------------------------- Advent Software, Inc. 1 16,800 441,168 - -------------------------------------------------------------------------------- Autodesk, Inc. 143,200 5,812,488 - -------------------------------------------------------------------------------- BEA Systems, Inc. 1 301,800 3,129,666 - -------------------------------------------------------------------------------- Blackbaud, Inc. 30,200 519,138 - -------------------------------------------------------------------------------- BMC Software, Inc. 1 147,800 3,266,380 - -------------------------------------------------------------------------------- Cadence Design Systems, Inc. 1 176,800 3,122,288 - -------------------------------------------------------------------------------- Citrix Systems, Inc. 1 74,800 2,306,832 - -------------------------------------------------------------------------------- Computer Associates International, Inc. 240,100 6,554,730 - -------------------------------------------------------------------------------- Compuware Corp. 1 325,800 2,684,592 - -------------------------------------------------------------------------------- Fair Isaac Corp. 58,700 2,601,584 - -------------------------------------------------------------------------------- FileNet Corp. 1 53,300 1,495,598 28 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- SOFTWARE Continued Hyperion Solutions Corp. 1 74,700 $ 2,570,427 - -------------------------------------------------------------------------------- Informatica Corp. 1 3,400 50,048 - -------------------------------------------------------------------------------- Intuit, Inc. 1 75,000 3,924,750 - -------------------------------------------------------------------------------- Macrovision Corp. 1 73,000 1,357,070 - -------------------------------------------------------------------------------- McAfee, Inc. 1 107,200 2,485,968 - -------------------------------------------------------------------------------- Microsoft Corp. 2,100,000 59,115,000 - -------------------------------------------------------------------------------- Novell, Inc. 1 329,500 3,209,330 - -------------------------------------------------------------------------------- Oracle Corp. 1 1,270,000 15,963,900 - -------------------------------------------------------------------------------- Parametric Technology Corp. 1 360,100 2,254,226 - -------------------------------------------------------------------------------- Red Hat, Inc. 1 124,700 3,610,065 - -------------------------------------------------------------------------------- Reynolds & Reynolds Co., Cl. A 34,300 974,120 - -------------------------------------------------------------------------------- RSA Security, Inc. 1 85,000 1,306,450 - -------------------------------------------------------------------------------- SERENA Software, Inc. 1 60,300 1,423,683 - -------------------------------------------------------------------------------- SSA Global Technologies, Inc. 1 800 13,920 - -------------------------------------------------------------------------------- Sybase, Inc. 1 114,600 2,474,214 - -------------------------------------------------------------------------------- Symantec Corp. 1 665,000 12,222,700 - -------------------------------------------------------------------------------- Synopsys, Inc. 1 133,300 2,947,263 - -------------------------------------------------------------------------------- Take-Two Interactive Software, Inc. 1 63,200 1,002,352 - -------------------------------------------------------------------------------- TIBCO Software, Inc. 1 77,000 615,230 - -------------------------------------------------------------------------------- Transaction Systems Architects, Inc., Cl. A 1 39,200 1,293,208 - -------------------------------------------------------------------------------- Verint Systems, Inc. 1 2,300 83,375 - -------------------------------------------------------------------------------- Wind River Systems, Inc. 1 400 5,352 -------------- 157,192,315 - -------------------------------------------------------------------------------- MATERIALS--3.1% - -------------------------------------------------------------------------------- CHEMICALS--1.2% Agrium, Inc. 103,100 2,458,935 - -------------------------------------------------------------------------------- Dow Chemical Co. (The) 245,300 10,376,190 - -------------------------------------------------------------------------------- E.I. du Pont de Nemours & Co. 43,700 1,710,855 - -------------------------------------------------------------------------------- FMC Corp. 1 25,600 1,444,352 - -------------------------------------------------------------------------------- Fuller (H.B.) Co. 6,800 256,972 - -------------------------------------------------------------------------------- Lubrizol Corp. (The) 29,900 1,367,626 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- CHEMICALS Continued Lyondell Chemical Co. 104,900 $ 2,518,649 - -------------------------------------------------------------------------------- Monsanto Co. 85,800 7,259,538 - -------------------------------------------------------------------------------- PPG Industries, Inc. 88,600 5,271,700 - -------------------------------------------------------------------------------- Rockwood Holdings, Inc. 1 9,100 193,193 - -------------------------------------------------------------------------------- Rohm & Haas Co. 83,100 4,229,790 - -------------------------------------------------------------------------------- Scotts Miracle-Gro Co. (The), Cl. A 34,400 1,702,800 - -------------------------------------------------------------------------------- Westlake Chemical Corp. 62,400 1,959,360 -------------- 40,749,960 - -------------------------------------------------------------------------------- CONSTRUCTION MATERIALS--0.1% Texas Industries, Inc. 19,200 1,033,152 - -------------------------------------------------------------------------------- Vulcan Materials Co. 10,300 740,364 -------------- 1,773,516 - -------------------------------------------------------------------------------- CONTAINERS & PACKAGING--0.1% Greif, Inc., Cl. A 5,800 377,696 - -------------------------------------------------------------------------------- Owens-Illinois, Inc. 1 28,600 628,914 - -------------------------------------------------------------------------------- Sealed Air Corp. 1 38,800 2,144,476 -------------- 3,151,086 - -------------------------------------------------------------------------------- METALS & MINING--1.4% AK Steel Holding Corp. 1 320,000 3,683,200 - -------------------------------------------------------------------------------- Alcoa, Inc. 55,000 1,732,500 - -------------------------------------------------------------------------------- Allegheny Technologies, Inc. 3,200 165,920 - -------------------------------------------------------------------------------- Carpenter Technology Corp. 27,300 2,472,288 - -------------------------------------------------------------------------------- Century Aluminum Co. 1 43,800 1,492,704 - -------------------------------------------------------------------------------- Commercial Metals Co. 41,700 1,973,661 - -------------------------------------------------------------------------------- Freeport-McMoRan Copper & Gold, Inc., Cl. B 73,300 4,709,525 - -------------------------------------------------------------------------------- Nucor Corp. 117,800 9,922,294 - -------------------------------------------------------------------------------- Phelps Dodge Corp. 56,000 8,988,000 - -------------------------------------------------------------------------------- Quanex Corp. 28,600 1,776,346 29 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF INVESTMENTS Unaudited / Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- METALS & MINING Continued Reliance Steel & Aluminum Co. 39,100 $ 3,108,450 - -------------------------------------------------------------------------------- Steel Dynamics, Inc. 32,100 1,490,082 - -------------------------------------------------------------------------------- Stillwater Mining Co. 1 8,300 120,350 - -------------------------------------------------------------------------------- United States Steel Corp. 27,700 1,655,075 - -------------------------------------------------------------------------------- Worthington Industries, Inc. 69,300 1,429,659 -------------- 44,720,054 - -------------------------------------------------------------------------------- PAPER & FOREST PRODUCTS--0.3% Bowater, Inc. 5,800 158,572 - -------------------------------------------------------------------------------- International Paper Co. 20,000 652,600 - -------------------------------------------------------------------------------- Louisiana-Pacific Corp. 55,300 1,628,585 - -------------------------------------------------------------------------------- MeadWestvaco Corp. 78,700 2,100,503 - -------------------------------------------------------------------------------- Weyerhaeuser Co. 62,200 4,339,072 -------------- 8,879,332 - -------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES--2.9% - -------------------------------------------------------------------------------- DIVERSIFIED TELECOMMUNICATION SERVICES--2.7% American Tower Corp. 1 49,900 1,543,906 - -------------------------------------------------------------------------------- AT&T, Inc. 505,255 13,111,367 - -------------------------------------------------------------------------------- BellSouth Corp. 483,300 13,904,541 - -------------------------------------------------------------------------------- CenturyTel, Inc. 52,900 1,761,570 - -------------------------------------------------------------------------------- Citizens Communications Co. 92,100 1,130,067 - -------------------------------------------------------------------------------- Commonwealth Telephone Enterprises, Inc. 14,900 497,213 - -------------------------------------------------------------------------------- Crown Castle International Corp. 1 75,400 2,384,902 - -------------------------------------------------------------------------------- Qwest Communications International, Inc. 1 811,000 4,882,220 - -------------------------------------------------------------------------------- Sprint Nextel Corp. 1,046,626 23,957,269 - -------------------------------------------------------------------------------- Time Warner Telecom, Inc., Cl. A 1 47,800 516,240 - -------------------------------------------------------------------------------- Verizon Communications, Inc. 727,990 23,048,163 -------------- 86,737,458 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- WIRELESS TELECOMMUNICATION SERVICES--0.2% Centennial Communications Corp. 51,000 $ 480,930 - -------------------------------------------------------------------------------- Cincinnati Bell, Inc. 1 367,300 1,285,550 - -------------------------------------------------------------------------------- Dobson Communications Corp., Cl. A 1 219,900 1,631,658 - -------------------------------------------------------------------------------- SBA Communications Corp. 1 77,200 1,686,820 - -------------------------------------------------------------------------------- Syniverse Holdings, Inc. 1 5,000 120,050 - -------------------------------------------------------------------------------- UbiquiTel, Inc. 1 116,300 1,138,577 -------------- 6,343,585 - -------------------------------------------------------------------------------- UTILITIES--0.9% - -------------------------------------------------------------------------------- ELECTRIC UTILITIES--0.8% AES Corp. (The) 1 49,400 841,776 - -------------------------------------------------------------------------------- American Electric Power Co., Inc. 7,900 294,828 - -------------------------------------------------------------------------------- Canadian Hydro Developers, Inc. 280,000 1,442,957 - -------------------------------------------------------------------------------- Constellation Energy Group, Inc. 65,600 3,822,512 - -------------------------------------------------------------------------------- DPL, Inc. 45,100 1,156,364 - -------------------------------------------------------------------------------- Edison International, Inc. 49,500 2,169,090 - -------------------------------------------------------------------------------- Entergy Corp. 6,200 430,962 - -------------------------------------------------------------------------------- FirstEnergy Corp. 14,100 706,410 - -------------------------------------------------------------------------------- Ormat Technologies, Inc. 83,700 2,950,425 - -------------------------------------------------------------------------------- PG&E Corp. 200,300 7,473,193 - -------------------------------------------------------------------------------- Pinnacle West Capital Corp. 4,300 183,223 - -------------------------------------------------------------------------------- TXU Corp. 83,900 4,248,696 -------------- 25,720,436 - -------------------------------------------------------------------------------- GAS UTILITIES--0.1% NiSource, Inc. 65,900 1,352,927 - -------------------------------------------------------------------------------- UGI Corp. 5,600 120,232 -------------- 1,473,159 30 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- MULTI-UTILITIES & UNREGULATED POWER--0.0% Avista Corp. 32,400 $ 619,164 - -------------------------------------------------------------------------------- Energy East Corp. 2,900 72,065 - -------------------------------------------------------------------------------- Sierra Pacific Resources 1 31,100 410,520 --------------- 1,101,749 --------------- Total Common Stocks (Cost $2,773,245,326) 3,184,456,843 PRINCIPAL AMOUNT - -------------------------------------------------------------------------------- JOINT REPURCHASE AGREEMENTS--1.0% - -------------------------------------------------------------------------------- Undivided interest of 3.87% in joint repurchase agreement (Principal Amount/ Value $781,426,000, with a maturity value of $781,521,291) with UBS Warburg LLC, 4.39%, dated 1/31/06, to be repurchased at $30,206,683 on 2/1/06, collateralized by Federal Home Loan Mortgage Corp., 5%, 12/1/35, with a value of $799,056,396 (Cost $30,203,000) $ 30,203,000 30,203,000 - -------------------------------------------------------------------------------- Total Investments, at Value (excluding Investments Purchased with Cash Collateral from Securities Loaned) (Cost $2,803,448,326) 3,214,659,843 - -------------------------------------------------------------------------------- INVESTMENTS PURCHASED WITH CASH COLLATERAL FROM SECURITIES LOANED--0.2% - -------------------------------------------------------------------------------- JOINT REPURCHASE AGREEMENTS--0.2% Undivided interest of 0.284% in joint repurchase agreement (Principal Amount/Value $2,500,000,000, with a maturity value of $2,500,313,889) with Bank of America NA, 4.52%, dated 1/31/06, to be repurchased at $7,102,146 on 2/1/06, collateralized by U.S. Agency Mortgages, 0.00%-10%, 2/1/07-4/1/44, with a value of $2,550,000,000 4 7,101,254 7,101,254 - -------------------------------------------------------------------------------- MASTER FLOATING NOTE--0.0% Bear Stearns, 4.62%, 2/1/06 4 250,000 250,000 --------------- Total Investments Purchased with Cash Collateral from Securities Loaned (Cost $7,351,254) 7,351,254 VALUE SEE NOTE 1 - -------------------------------------------------------------------------------- TOTAL INVESTMENTS, AT VALUE (COST $2,810,799,580) 100.2% $3,222,011,097 - -------------------------------------------------------------------------------- LIABILITIES IN EXCESS OF OTHER ASSETS (0.2) (5,011,264) ------------------------------ NET ASSETS 100.0% $3,216,999,833 ============================== FOOTNOTES TO STATEMENT OF INVESTMENTS 1. Non-income producing security. 2. Partial or fully-loaned security. See Note 7 of Notes to Financial Statements. 3. Illiquid or restricted security. The aggregate value of illiquid or restricted securities as of January 31, 2006 was $1,434,696, which represents 0.04% of the Fund's net assets, all of which is considered restricted. See Note 6 of Notes to Financial Statements. 4. The security has been segregated to satisfy the forward commitment to return the cash collateral received in securities lending transactions upon the borrower's return of the securities loaned. See Note 7 of Notes to Financial Statements. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 31 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF ASSETS AND LIABILITIES Unaudited - -------------------------------------------------------------------------------- January 31, 2006 - ------------------------------------------------------------------------------- ASSETS - ------------------------------------------------------------------------------- Investments, at value (including securities loaned of $6,815,071) (cost $2,810,799,580) - --see accompanying statement of investments $3,222,011,097 - ------------------------------------------------------------------------------- Cash 878,955 - ------------------------------------------------------------------------------- Receivables and other assets: Investments sold 14,868,474 Shares of beneficial interest sold 12,478,007 Interest and dividends 1,836,616 Other 38,605 -------------- Total assets 3,252,111,754 - ------------------------------------------------------------------------------- LIABILITIES - ------------------------------------------------------------------------------- Return of collateral for securities loaned 7,351,254 - ------------------------------------------------------------------------------- Unrealized depreciation on foreign currency contracts 2,385 - ------------------------------------------------------------------------------- Payables and other liabilities: Investments purchased 21,546,330 Shares of beneficial interest redeemed 4,700,824 Distribution and service plan fees 648,726 Transfer and shareholder servicing agent fees 475,144 Shareholder communications 289,119 Trustees' compensation 25,948 Other 72,191 -------------- Total liabilities 35,111,921 - ------------------------------------------------------------------------------- NET ASSETS $3,216,999,833 ============== - ------------------------------------------------------------------------------- COMPOSITION OF NET ASSETS - ------------------------------------------------------------------------------- Par value of shares of beneficial interest $ 232,120 - ------------------------------------------------------------------------------- Additional paid-in capital 2,754,888,490 - ------------------------------------------------------------------------------- Accumulated net investment income 1,583,899 - ------------------------------------------------------------------------------- Accumulated net realized gain on investments and foreign currency transactions 49,081,055 - ------------------------------------------------------------------------------- Net unrealized appreciation on investments and translation of assets and liabilities denominated in foreign currencies 411,214,269 - ------------------------------------------------------------------------------- NET ASSETS $3,216,999,833 ============== 32 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND - -------------------------------------------------------------------------------------- NET ASSET VALUE PER SHARE - -------------------------------------------------------------------------------------- Class A Shares: Net asset value and redemption price per share (based on net assets of $2,091,977,159 and 149,463,336 shares of beneficial interest outstanding) Maximum offering price per share (net asset value plus $14.00 sales charge of 5.75% of offering price) $14.85 - -------------------------------------------------------------------------------------- Class B Shares: Net asset value, redemption price (excludes applicable contingent deferred sales charge) and offering price per share (based on net assets of $465,191,300 and 34,415,709 shares of beneficial interest outstanding) $13.52 - -------------------------------------------------------------------------------------- Class C Shares: Net asset value, redemption price (excludes applicable contingent deferred sales charge) and offering price per share (based on net assets of $497,045,481 and 36,624,655 shares of beneficial interest outstanding) $13.57 - -------------------------------------------------------------------------------------- Class N Shares: Net asset value, redemption price (excludes applicable contingent deferred sales charge) and offering price per share (based on net assets of $75,624,482 and 5,469,547 shares of beneficial interest outstanding) $13.83 - -------------------------------------------------------------------------------------- Class Y Shares: Net asset value, redemption price and offering price per share (based on net assets of $87,161,411 and 6,146,920 shares of beneficial interest outstanding) $14.18 SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 33 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENT OF OPERATIONS Unaudited - -------------------------------------------------------------------------------- For the Six Months Ended January 31, 2006 - ------------------------------------------------------------------------------- INVESTMENT INCOME - ------------------------------------------------------------------------------- Dividends (net of foreign withholding taxes of $67,217) $ 26,036,557 - ------------------------------------------------------------------------------- Interest 657,783 - ------------------------------------------------------------------------------- Other income 40,157 - ------------------------------------------------------------------------------- Portfolio lending fees 28,448 -------------- Total investment income 26,762,945 - ------------------------------------------------------------------------------- EXPENSES - ------------------------------------------------------------------------------- Management fees 9,368,214 - ------------------------------------------------------------------------------- Distribution and service plan fees: Class A 2,419,420 Class B 2,205,734 Class C 2,319,783 Class N 159,882 - ------------------------------------------------------------------------------- Transfer and shareholder servicing agent fees: Class A 1,726,375 Class B 576,543 Class C 417,468 Class N 101,790 Class Y 39,427 - ------------------------------------------------------------------------------- Shareholder communications: Class A 143,557 Class B 71,566 Class C 39,222 Class N 4,566 - ------------------------------------------------------------------------------- Trustees' compensation 21,277 - ------------------------------------------------------------------------------- Custodian fees and expenses 11,352 - ------------------------------------------------------------------------------- Administration service fees 750 - ------------------------------------------------------------------------------- Other 86,972 -------------- Total expenses 19,713,898 - ------------------------------------------------------------------------------- NET INVESTMENT INCOME 7,049,047 34 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND - ------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN - ------------------------------------------------------------------------------- Net realized gain on: Investments $ 114,667,170 Foreign currency transactions 1,355,535 -------------- Net realized gain 116,022,705 - ------------------------------------------------------------------------------- Net change in unrealized appreciation on: Investments 86,972,868 Translation of assets and liabilities denominated in foreign currencies 11,555 -------------- Net change in unrealized appreciation 86,984,423 - ------------------------------------------------------------------------------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS $ 210,056,175 ============== SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 35 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND STATEMENTS OF CHANGES IN NET ASSETS - -------------------------------------------------------------------------------- SIX MONTHS YEAR ENDED ENDED JANUARY 31, 2006 JULY 31, (UNAUDITED) 2005 - ----------------------------------------------------------------------------------------------------------------------- OPERATIONS - ----------------------------------------------------------------------------------------------------------------------- Net investment income $ 7,049,047 $ 14,830,462 - ----------------------------------------------------------------------------------------------------------------------- Net realized gain 116,022,705 92,792,414 - ----------------------------------------------------------------------------------------------------------------------- Net change in unrealized appreciation 86,984,423 247,988,516 ---------------------------------- Net increase in net assets resulting from operations 210,056,175 355,611,392 - ----------------------------------------------------------------------------------------------------------------------- DIVIDENDS AND/OR DISTRIBUTIONS TO SHAREHOLDERS - ----------------------------------------------------------------------------------------------------------------------- Dividends from net investment income: Class A (10,637,665) (8,491,754) Class B -- -- Class C -- -- Class N (132,814) (157,883) Class Y (560,500) (243,531) - ----------------------------------------------------------------------------------------------------------------------- Distributions from net realized gain: Class A (67,063,760) (105,627,017) Class B (15,361,646) (30,629,022) Class C (16,219,983) (30,454,372) Class N (2,237,212) (3,271,155) Class Y (2,290,379) (1,898,777) - ----------------------------------------------------------------------------------------------------------------------- BENEFICIAL INTEREST TRANSACTIONS - ----------------------------------------------------------------------------------------------------------------------- Net increase in net assets resulting from beneficial interest transactions: Class A 185,589,723 513,526,048 Class B 16,902,948 41,817,432 Class C 33,742,036 73,074,302 Class N 15,162,959 21,285,409 Class Y 40,553,653 35,344,456 - ----------------------------------------------------------------------------------------------------------------------- NET ASSETS - ----------------------------------------------------------------------------------------------------------------------- Total increase 387,503,535 859,885,528 - ----------------------------------------------------------------------------------------------------------------------- Beginning of period 2,829,496,298 1,969,610,770 ---------------------------------- End of period (including accumulated net investment income of $1,583,899 and $5,865,831, respectively) $ 3,216,999,833 $2,829,496,298 ================================== SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 36 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- SIX MONTHS YEAR ENDED ENDED JANUARY 31, 2006 JULY 31, CLASS A (UNAUDITED) 2005 2004 2003 2002 2001 1 - ----------------------------------------------------------------------------------------------------------------------------------- PER SHARE OPERATING DATA - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, beginning of period $ 13.58 $ 12.69 $ 10.70 $ 9.28 $ 10.47 $ 10.00 - ----------------------------------------------------------------------------------------------------------------------------------- Income (loss) from investment operations: Net investment income (loss) .05 2 .12 2 (.02) (.01) (.04) -- 3 Net realized and unrealized gain (loss) .91 1.86 2.01 1.43 (1.15) .48 -------------------------------------------------------------------------------------- Total from investment operations .96 1.98 1.99 1.42 (1.19) .48 - ----------------------------------------------------------------------------------------------------------------------------------- Dividends and/or distributions to shareholders: Dividends from net investment income (.07) (.08) -- -- -- (.01) Distributions from net realized gain (.47) (1.01) -- -- -- -- -------------------------------------------------------------------------------------- Total dividends and/or distributions to shareholders (.54) (1.09) -- -- -- (.01) - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 14.00 $ 13.58 $ 12.69 $ 10.70 $9.28 $ 10.47 ====================================================================================== - ----------------------------------------------------------------------------------------------------------------------------------- TOTAL RETURN, AT NET ASSET VALUE 4 7.20% 16.16% 18.60% 15.30% (11.37)% 4.76% - ----------------------------------------------------------------------------------------------------------------------------------- - ----------------------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA - ----------------------------------------------------------------------------------------------------------------------------------- Net assets, end of period (in thousands) $ 2,091,977 $1,844,002 $1,213,822 $501,277 $300,244 $119,194 - ----------------------------------------------------------------------------------------------------------------------------------- Average net assets (in thousands) $ 1,935,395 $1,490,786 $ 892,462 $362,221 $248,681 $ 48,406 - ----------------------------------------------------------------------------------------------------------------------------------- Ratios to average net assets: 5 Net investment income (loss) 0.72% 0.90% 0.11% (0.02)% (0.36)% (0.11)% Total expenses 1.08% 1.11% 6 1.17% 6,7 1.23% 6 1.30% 6,7 1.33% 6 - ----------------------------------------------------------------------------------------------------------------------------------- Portfolio turnover rate 52% 107% 134% 165% 165% 92% 1. For the period from September 25, 2000 (commencement of operations) to July 31, 2001. 2. Per share amounts calculated based on the average shares outstanding during the period. 3. Less than $0.005 per share. 4. Assumes an investment on the business day before the first day of the fiscal period, with all dividends and distributions reinvested in additional shares on the reinvestment date, and redemption at the net asset value calculated on the last business day of the fiscal period. Sales charges are not reflected in the total returns. Total returns are not annualized for periods of less than one full year. Returns do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares. 5. Annualized for periods of less than one full year. 6. Reduction to custodian expenses less than 0.01%. 7. Voluntary waiver of transfer agent fees less than 0.01%. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 37 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND FINANCIAL HIGHLIGHTS Continued - -------------------------------------------------------------------------------- SIX MONTHS YEAR ENDED ENDED JANUARY 31, 2006 JULY 31, CLASS B (UNAUDITED) 2005 2004 2003 2002 2001 1 - ---------------------------------------------------------------------------------------------------------------------------------- PER SHARE OPERATING DATA - ---------------------------------------------------------------------------------------------------------------------------------- Net asset value, beginning of period $ 13.11 $ 12.31 $ 10.47 $ 9.15 $ 10.40 $ 10.00 - ---------------------------------------------------------------------------------------------------------------------------------- Income (loss) from investment operations: Net investment income (loss) (.01) 2 .01 2 (.07) (.07) (.06) (.03) Net realized and unrealized gain (loss) .89 1.80 1.91 1.39 (1.19) .43 ------------------------------------------------------------------------------------- Total from investment operations .88 1.81 1.84 1.32 (1.25) .40 - ---------------------------------------------------------------------------------------------------------------------------------- Dividends and/or distributions to shareholders: Dividends from net investment income -- -- -- -- -- -- Distributions from net realized gain (.47) (1.01) -- -- -- -- ------------------------------------------------------------------------------------- Total dividends and/or distributions to shareholders (.47) (1.01) -- -- -- -- - ---------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 13.52 $ 13.11 $ 12.31 $ 10.47 $ 9.15 $ 10.40 ===================================================================================== - ---------------------------------------------------------------------------------------------------------------------------------- TOTAL RETURN, AT NET ASSET VALUE 3 6.80% 15.17% 17.57% 14.43% (12.02)% 4.00% - ---------------------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA - ---------------------------------------------------------------------------------------------------------------------------------- Net assets, end of period (in thousands) $ 465,191 $ 434,456 $ 366,608 $237,002 $167,906 $ 51,412 - ---------------------------------------------------------------------------------------------------------------------------------- Average net assets (in thousands) $ 438,025 $ 403,468 $ 321,870 $187,066 $117,801 $ 17,362 - ---------------------------------------------------------------------------------------------------------------------------------- Ratios to average net assets: 4 Net investment income (loss) (0.13)% 0.06% (0.76)% (0.85)% (1.11)% (0.99)% Total expenses 1.93% 1.95% 2.01% 2.12% 2.05% 2.15% Expenses after payments and waivers and reduction to custodian expenses 1.93% 1.95% 2.01% 2.07% 2.05% 2.15% - ---------------------------------------------------------------------------------------------------------------------------------- Portfolio turnover rate 52% 107% 134% 165% 165% 92% 1. For the period from September 25, 2000 (commencement of operations) to July 31, 2001. 2. Per share amounts calculated based on the average shares outstanding during the period. 3. Assumes an investment on the business day before the first day of the fiscal period, with all dividends and distributions reinvested in additional shares on the reinvestment date, and redemption at the net asset value calculated on the last business day of the fiscal period. Sales charges are not reflected in the total returns. Total returns are not annualized for periods of less than one full year. Returns do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares. 4. Annualized for periods of less than one full year. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 38 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND SIX MONTHS YEAR ENDED ENDED JANUARY 31, 2006 JULY 31, CLASS C (UNAUDITED) 2005 2004 2003 2002 2001 1 - ------------------------------------------------------------------------------------------------------------------------------------ PER SHARE OPERATING DATA - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, beginning of period $ 13.16 $ 12.34 $ 10.48 $ 9.15 $ 10.40 $ 10.00 - ------------------------------------------------------------------------------------------------------------------------------------ Income (loss) from investment operations: Net investment income (loss) -- 2,3 .02 2 (.05) (.06) (.06) (.03) Net realized and unrealized gain (loss) .88 1.81 1.91 1.39 (1.19) .43 --------------------------------------------------------------------------------------- Total from investment operations .88 1.83 1.86 1.33 (1.25) .40 - ------------------------------------------------------------------------------------------------------------------------------------ Dividends and/or distributions to shareholders: Dividends from net investment income -- -- -- -- -- -- Distributions from net realized gain (.47) (1.01) -- -- -- -- --------------------------------------------------------------------------------------- Total dividends and/or distributions to shareholders (.47) (1.01) -- -- -- -- - ------------------------------------------------------------------------------------------------------------------------------------ Net asset value, end of period $ 13.57 $ 13.16 $ 12.34 $ 10.48 $ 9.15 $ 10.40 ======================================================================================= - ------------------------------------------------------------------------------------------------------------------------------------ TOTAL RETURN, AT NET ASSET VALUE 4 6.77% 15.30% 17.75% 14.54% (12.02)% 4.00% - ------------------------------------------------------------------------------------------------------------------------------------ - ------------------------------------------------------------------------------------------------------------------------------------ RATIOS/SUPPLEMENTAL DATA - ------------------------------------------------------------------------------------------------------------------------------------ Net assets, end of period (in thousands) $ 497,046 $ 448,492 $ 348,928 $198,180 $141,434 $ 43,613 - ------------------------------------------------------------------------------------------------------------------------------------ Average net assets (in thousands) $ 460,622 $ 404,242 $ 289,046 $159,105 $ 97,899 $ 16,456 - ------------------------------------------------------------------------------------------------------------------------------------ Ratios to average net assets: 5 Net investment income (loss) (0.04)% 0.16% (0.63)% (0.73)% (1.11)% (0.98)% Total expenses 1.83% 1.85% 6 1.89% 6,7 1.95% 6 2.05% 6,7 2.15% 6 - ------------------------------------------------------------------------------------------------------------------------------------ Portfolio turnover rate 52% 107% 134% 165% 165% 92% 1. For the period from September 25, 2000 (commencement of operations) to July 31, 2001. 2. Per share amounts calculated based on the average shares outstanding during the period. 3. Less than $0.005 per share. 4. Assumes an investment on the business day before the first day of the fiscal period, with all dividends and distributions reinvested in additional shares on the reinvestment date, and redemption at the net asset value calculated on the last business day of the fiscal period. Sales charges are not reflected in the total returns. Total returns are not annualized for periods of less than one full year. Returns do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares. 5. Annualized for periods of less than one full year. 6. Reduction to custodian expenses less than 0.01%. 7. Voluntary waiver of transfer agent fees less than 0.01%. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 39 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND FINANCIAL HIGHLIGHTS Continued - -------------------------------------------------------------------------------- SIX MONTHS YEAR ENDED ENDED JANUARY 31, 2006 JULY 31, CLASS N (UNAUDITED) 2005 2004 2003 2002 2001 1 - ---------------------------------------------------------------------------------------------------------------------------------- PER SHARE OPERATING DATA - ---------------------------------------------------------------------------------------------------------------------------------- Net asset value, beginning of period $ 13.40 $ 12.56 $ 10.62 $ 9.23 $ 10.45 $ 9.84 - ---------------------------------------------------------------------------------------------------------------------------------- Income (loss) from investment operations: Net investment income (loss) .02 2 .06 2 (.04) (.03) (.03) (.01) Net realized and unrealized gain (loss) .91 1.84 1.98 1.42 (1.19) .62 ------------------------------------------------------------------------------------- Total from investment operations .93 1.90 1.94 1.39 (1.22) .61 - ---------------------------------------------------------------------------------------------------------------------------------- Dividends and/or distributions to shareholders: Dividends from net investment income (.03) (.05) -- -- -- -- Distributions from net realized gain (.47) (1.01) -- -- -- -- ------------------------------------------------------------------------------------- Total dividends and/or distributions to shareholders (.50) (1.06) -- -- -- -- - ---------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 13.83 $ 13.40 $ 12.56 $ 10.62 $ 9.23 $ 10.45 ===================================================================================== - ---------------------------------------------------------------------------------------------------------------------------------- TOTAL RETURN, AT NET ASSET VALUE 3 7.02% 15.62% 18.27% 15.06% (11.67)% 6.20% - ---------------------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA - ---------------------------------------------------------------------------------------------------------------------------------- Net assets, end of period (in thousands) $ 75,625 $ 58,243 $ 33,665 $ 13,369 $ 5,158 $ 8 - ---------------------------------------------------------------------------------------------------------------------------------- Average net assets (in thousands) $ 63,537 $ 46,600 $ 22,846 $ 8,524 $ 2,026 $ 3 - ---------------------------------------------------------------------------------------------------------------------------------- Ratios to average net assets: 4 Net investment income (loss) 0.32% 0.46% (0.28)% (0.30)% (0.67)% (0.64)% Total expenses 1.47% 1.54% 1.62% 1.49% 1.58% 1.57% Expenses after payments and waivers and reduction to custodian expenses 1.47% 1.53% 1.54% 1.49% 1.58% 1.57% - ---------------------------------------------------------------------------------------------------------------------------------- Portfolio turnover rate 52% 107% 134% 165% 165% 92% 1. For the period from March 1, 2001 (inception of offering) to July 31, 2001. 2. Per share amounts calculated based on the average shares outstanding during the period. 3. Assumes an investment on the business day before the first day of the fiscal period, with all dividends and distributions reinvested in additional shares on the reinvestment date, and redemption at the net asset value calculated on the last business day of the fiscal period. Sales charges are not reflected in the total returns. Total returns are not annualized for periods of less than one full year. Returns do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares. 4. Annualized for periods of less than one full year. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 40 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND SIX MONTHS YEAR ENDED ENDED JANUARY 31, 2006 JULY 31, CLASS Y (UNAUDITED) 2005 2004 2003 2002 2001 1 - ----------------------------------------------------------------------------------------------------------------------------------- PER SHARE OPERATING DATA - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, beginning of period $ 13.76 $ 12.86 $ 10.79 $ 9.31 $ 10.48 $ 10.00 - ----------------------------------------------------------------------------------------------------------------------------------- Income (loss) from investment operations: Net investment income (loss) .07 2 .15 2 .05 .02 (.03) .02 Net realized and unrealized gain (loss) .93 1.89 2.02 1.46 (1.14) .47 -------------------------------------------------------------------------------------- Total from investment operations 1.00 2.04 2.07 1.48 (1.17) .49 - ----------------------------------------------------------------------------------------------------------------------------------- Dividends and/or distributions to shareholders: Dividends from net investment income (.11) (.13) -- -- -- (.01) Distributions from net realized gain (.47) (1.01) -- -- -- -- -------------------------------------------------------------------------------------- Total dividends and/or distributions to shareholders (.58) (1.14) -- -- -- (.01) - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 14.18 $ 13.76 $ 12.86 $ 10.79 $ 9.31 $ 10.48 ====================================================================================== - ----------------------------------------------------------------------------------------------------------------------------------- TOTAL RETURN, AT NET ASSET VALUE 3 7.41% 16.43% 19.18% 15.90% (11.16)% 4.94% - ----------------------------------------------------------------------------------------------------------------------------------- - ----------------------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA - ----------------------------------------------------------------------------------------------------------------------------------- Net assets, end of period (in thousands) $ 87,161 $ 44,303 $ 6,589 $ 4,428 $ 2,696 $ 1 - ----------------------------------------------------------------------------------------------------------------------------------- Average net assets (in thousands) $ 61,791 $ 27,864 $ 5,921 $ 3,102 $ 1,953 $ 1 - ----------------------------------------------------------------------------------------------------------------------------------- Ratios to average net assets: 4 Net investment income (loss) 1.00% 1.14% 0.57% 0.44% (0.07)% 0.35% Total expenses 0.76% 0.82% 0.67% 0.77% 1.04% 168.30% 5 Expenses after payments and waivers and reduction to custodian expenses 0.76% 0.82% 0.67% 0.77% 1.00% 1.01% - ----------------------------------------------------------------------------------------------------------------------------------- Portfolio turnover rate 52% 107% 134% 165% 165% 92% 1. For the period from September 25, 2000 (commencement of operations) to July 31, 2001. 2. Per share amounts calculated based on the average shares outstanding during the period. 3. Assumes an investment on the business day before the first day of the fiscal period, with all dividends and distributions reinvested in additional shares on the reinvestment date, and redemption at the net asset value calculated on the last business day of the fiscal period. Sales charges are not reflected in the total returns. Total returns are not annualized for periods of less than one full year. Returns do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or the redemption of Fund shares. 4. Annualized for periods of less than one full year. 5. Added since July 31, 2001 to reflect expenses before reduction to custodian expenses and voluntary waiver of transfer agent fees. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 41 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS Unaudited - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1. SIGNIFICANT ACCOUNTING POLICIES Oppenheimer Main Street Opportunity Fund (the Fund) is registered under the Investment Company Act of 1940, as amended, as an open-end management investment company. The Fund's investment objective is to seek long-term capital appreciation. The Fund's investment advisor is OppenheimerFunds, Inc. (the Manager). The Fund offers Class A, Class B, Class C, Class N and Class Y shares. Class A shares are sold at their offering price, which is normally net asset value plus a front-end sales charge. Class B, Class C and Class N shares are sold without a front-end sales charge but may be subject to a contingent deferred sales charge (CDSC). Class N shares are sold only through retirement plans. Retirement plans that offer Class N shares may impose charges on those accounts. Class Y shares are sold to certain institutional investors without either a front-end sales charge or a CDSC, however, the institutional investor may impose charges on those accounts. All classes of shares have identical rights and voting privileges with respect to the Fund in general and exclusive voting rights on matters that affect that class alone. Earnings, net assets and net asset value per share may differ due to each class having its own expenses, such as transfer and shareholder servicing agent fees and shareholder communications, directly attributable to that class. Class A, B, C and N have separate distribution and/or service plans. No such plan has been adopted for Class Y shares. Class B shares will automatically convert to Class A shares six years after the date of purchase. The following is a summary of significant accounting policies consistently followed by the Fund. - -------------------------------------------------------------------------------- SECURITIES VALUATION. The Fund calculates the net asset value of its shares as of the close of The New York Stock Exchange (the Exchange), normally 4:00 P.M. Eastern time, on each day the Exchange is open for business. Securities may be valued primarily using dealer-supplied valuations or a portfolio pricing service authorized by the Board of Trustees. Securities listed or traded on National Stock Exchanges or other domestic exchanges are valued based on the last sale price of the security traded on that exchange prior to the time when the Fund's assets are valued. Securities traded on NASDAQ are valued based on the closing price provided by NASDAQ prior to the time when the Fund's assets are valued. In the absence of a sale, the security is valued at the last sale price on the prior trading day, if it is within the spread of the closing "bid" and "asked" prices, and if not, at the closing bid price. Securities traded on foreign exchanges are valued based on the last sale price on the principal exchange on which the security is traded, as identified by the portfolio pricing service, prior to the time when the Fund's assets are valued. In the absence of a sale, the security is valued at the official closing price on the principal exchange. Corporate, government and municipal debt instruments having a remaining maturity in excess of sixty days and all mortgage-backed securities will be valued at the mean between the "bid" and "asked" prices. Futures contracts traded on a commodities or futures exchange will be valued at the final settlement price or official closing price on the principal exchange as reported by such principal exchange at its 42 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND trading session ending at, or most recently prior to, the time when the Fund's assets are valued. Securities (including restricted securities) for which market quotations are not readily available are valued at their fair value. Foreign and domestic securities whose values have been materially affected by what the Manager identifies as a significant event occurring before the Fund's assets are valued but after the close of their respective exchanges will be fair valued. Fair value is determined in good faith using consistently applied procedures under the supervision of the Board of Trustees. Short-term "money market type" debt securities with remaining maturities of sixty days or less are valued at amortized cost (which approximates market value). - -------------------------------------------------------------------------------- FOREIGN CURRENCY TRANSLATION. The Fund's accounting records are maintained in U.S. dollars. The values of securities denominated in foreign currencies and amounts related to the purchase and sale of foreign securities and foreign investment income are translated into U.S. dollars as of the close of The New York Stock Exchange (the Exchange), normally 4:00 P.M. Eastern time, on each day the Exchange is open for business. Foreign exchange rates may be valued primarily using dealer supplied valuations or a portfolio pricing service authorized by the Board of Trustees. Reported net realized foreign exchange gains or losses arise from sales of portfolio securities, sales and maturities of short-term securities, sales of foreign currencies, currency gains or losses realized between the trade and settlement dates on securities transactions, and the difference between the amounts of dividends, interest, and foreign withholding taxes recorded on the Fund's books and the U.S. dollar equivalent of the amounts actually received or paid. Net unrealized foreign exchange gains and losses arise from changes in the values of assets and liabilities, including investments in securities at fiscal period end, resulting from changes in exchange rates. The effect of changes in foreign currency exchange rates on investments is separately identified from the fluctuations arising from changes in market values of securities held and reported with all other foreign currency gains and losses in the Fund's Statement of Operations. - -------------------------------------------------------------------------------- JOINT REPURCHASE AGREEMENTS. Pursuant to an Exemptive Order issued by the Securities and Exchange Commission, the Fund, along with other affiliated funds advised by the Manager, may transfer uninvested cash balances into joint trading accounts on a daily basis. These balances are invested in one or more repurchase agreements. Securities pledged as collateral for repurchase agreements are held by a custodian bank until the agreements mature. Each agreement requires that the market value of the collateral be sufficient to cover payments of interest and principal. In the event of default by the other party to the agreement, retention of the collateral may be subject to legal proceedings. - -------------------------------------------------------------------------------- ALLOCATION OF INCOME, EXPENSES, GAINS AND LOSSES. Income, expenses (other than those attributable to a specific class), gains and losses are allocated on a daily basis to each class of shares based upon the relative proportion of net assets represented by such class. 43 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS Unaudited / Continued - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1. SIGNIFICANT ACCOUNTING POLICIES Continued Operating expenses directly attributable to a specific class are charged against the operations of that class. - -------------------------------------------------------------------------------- FEDERAL TAXES. The Fund intends to comply with provisions of the Internal Revenue Code applicable to regulated investment companies and to distribute substantially all of its investment company taxable income, including any net realized gain on investments not offset by capital loss carryforwards, if any, to shareholders, therefore, no federal income or excise tax provision is required. Net investment income (loss) and net realized gain (loss) may differ for financial statement and tax purposes. The character of dividends and distributions made during the fiscal year from net investment income or net realized gains may differ from their ultimate characterization for federal income tax purposes. Also, due to timing of dividends and distributions, the fiscal year in which amounts are distributed may differ from the fiscal year in which the income or net realized gain was recorded by the Fund. - -------------------------------------------------------------------------------- TRUSTEES' COMPENSATION. The Board of Trustees has adopted a deferred compensation plan for independent trustees that enables trustees to elect to defer receipt of all or a portion of the annual compensation they are entitled to receive from the Fund. For purposes of determining the amount owed to the Trustee under the plan, deferred amounts are treated as though equal dollar amounts had been invested in shares of the Fund or in other Oppenheimer funds selected by the Trustee. The Fund purchases shares of the funds selected for deferral by the Trustee in amounts equal to his or her deemed investment, resulting in a Fund asset equal to the deferred compensation liability. Such assets are included as a component of "Other" within the asset section of the Statement of Assets and Liabilities. Deferral of trustees' fees under the plan will not affect the net assets of the Fund, and will not materially affect the Fund's assets, liabilities or net investment income per share. Amounts will be deferred until distributed in accordance to the Plan. - -------------------------------------------------------------------------------- DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS. Dividends and distributions to shareholders, which are determined in accordance with income tax regulations, are recorded on the ex-dividend date. Income and capital gain distributions, if any, are declared and paid annually. - -------------------------------------------------------------------------------- INVESTMENT INCOME. Dividend income is recorded on the ex-dividend date or upon ex-dividend notification in the case of certain foreign dividends where the ex-dividend date may have passed. Non-cash dividends included in dividend income, if any, are recorded at the fair market value of the securities received. Interest income, which includes accretion of discount and amortization of premium, is accrued as earned. 44 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND - -------------------------------------------------------------------------------- CUSTODIAN FEES. "Custodian fees and expenses" in the Statement of Operations may include interest expense incurred by the Fund on any cash overdrafts of its custodian account during the period. Such cash overdrafts may result from the effects of failed trades in portfolio securities and from cash outflows resulting from unanticipated shareholder redemption activity. The Fund pays interest to its custodian on such cash overdrafts to the extent they are not offset by positive cash balances maintained by the Fund at a rate equal to the Federal Funds Rate plus 0.50%. The "Reduction to custodian expenses" line item, if applicable, represents earnings on cash balances maintained by the Fund during the period. At January 31, 2006, the Fund had $305 of such earnings on cash balances available to offset future custodian fees or interest expenses incurred during the next fiscal year. - -------------------------------------------------------------------------------- SECURITY TRANSACTIONS. Security transactions are recorded on the trade date. Realized gains and losses on securities sold are determined on the basis of identified cost. - -------------------------------------------------------------------------------- INDEMNIFICATIONS. The Fund's organizational documents provide current and former trustees and officers with a limited indemnification against liabilities arising in connection with the performance of their duties to the Fund. In the normal course of business, the Fund may also enter into contracts that provide general indemnifications. The Fund's maximum exposure under these arrangements is unknown as this would be dependent on future claims that may be made against the Fund. The risk of material loss from such claims is considered remote. - -------------------------------------------------------------------------------- OTHER. 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 income and expenses during the reporting period. Actual results could differ from those estimates. - -------------------------------------------------------------------------------- 2. SHARES OF BENEFICIAL INTEREST The Fund has authorized an unlimited number of $0.001 par value shares of beneficial interest of each class. Transactions in shares of beneficial interest were as follows: SIX MONTHS ENDED JANUARY 31, 2006 YEAR ENDED JULY 31, 2005 SHARES AMOUNT SHARES AMOUNT - -------------------------------------------------------------------------------------------- CLASS A Sold 27,514,215 $ 375,858,729 56,087,001 $ 721,077,772 Dividends and/or distributions reinvested 5,159,660 70,068,077 8,073,322 102,773,406 Redeemed (19,040,941) (260,337,083) (23,990,423) (310,325,130) ----------------------------------------------------------------- Net increase 13,632,934 $ 185,589,723 40,169,900 $ 513,526,048 ================================================================= 45 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS Unaudited / Continued - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 2. SHARES OF BENEFICIAL INTEREST Continued SIX MONTHS ENDED JANUARY 31, 2006 YEAR ENDED JULY 31, 2005 SHARES AMOUNT SHARES AMOUNT - -------------------------------------------------------------------------------------------- Class B Sold 3,826,787 $ 50,503,977 7,455,377 $ 93,788,134 Dividends and/or distributions reinvested 1,095,569 14,384,896 2,298,859 28,413,904 Redeemed (3,640,251) (47,985,925) (6,393,766) (80,384,606) ----------------------------------------------------------------- Net increase 1,282,105 $ 16,902,948 3,360,470 $ 41,817,432 ================================================================= - -------------------------------------------------------------------------------------------- Class C Sold 4,834,656 $ 64,007,113 9,222,465 $ 116,397,855 Dividends and/or distributions reinvested 1,109,776 14,626,844 2,177,660 27,002,990 Redeemed (3,406,208) (44,891,921) (5,588,953) (70,326,543) ----------------------------------------------------------------- Net increase 2,538,224 $ 33,742,036 5,811,172 $ 73,074,302 ================================================================= - -------------------------------------------------------------------------------------------- Class N Sold 1,673,087 $ 22,591,245 2,320,216 $ 29,787,035 Dividends and/or distributions reinvested 168,140 2,256,437 262,057 3,301,929 Redeemed (718,530) (9,684,723) (916,516) (11,803,555) ----------------------------------------------------------------- Net increase 1,122,697 $ 15,162,959 1,665,757 $ 21,285,409 ================================================================= - -------------------------------------------------------------------------------------------- Class Y Sold 2,888,814 $ 40,015,561 2,709,492 $ 35,440,606 Dividends and/or distributions reinvested 207,333 2,850,822 166,190 2,142,194 Redeemed (167,995) (2,312,730) (169,258) (2,238,344) ----------------------------------------------------------------- Net increase 2,928,152 $ 40,553,653 2,706,424 $ 35,344,456 ================================================================= - -------------------------------------------------------------------------------- 3. PURCHASES AND SALES OF SECURITIES The aggregate cost of purchases and proceeds from sales of securities, other than short-term obligations, for the six months ended January 31, 2006, were as follows: PURCHASES SALES - -------------------------------------------------------------------------------- Investment securities $1,718,773,494 $1,525,571,906 - -------------------------------------------------------------------------------- 4. FEES AND OTHER TRANSACTIONS WITH AFFILIATES MANAGEMENT FEES. Effective January 1, 2006, management fees paid to the Manager were in accordance with the investment advisory agreement with the Fund which provides for a fee at an annual rate of 0.75% of the first $200 million of average annual net assets of the Fund, 0.72% of the next $200 million, 0.69% of the next $200 million, 0.66% of the next $200 million, 0.60% of the next $4.2 billion and 0.58% of average annual net assets in excess of $5 billion. Prior to January 1, 2006, the investment advisory agreement with the Fund provided for a fee at an annual rate of 0.75% of the first $200 million of 46 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND average annual net assets of the Fund, 0.72% of the next $200 million, 0.69% of the next $200 million, 0.66% of the next $200 million, and 0.60% of average annual net assets in excess of $800 million. - -------------------------------------------------------------------------------- ADMINISTRATION SERVICE FEES. The Fund pays the Manager a fee of $1,500 per year for preparing and filing the Fund's tax returns. - -------------------------------------------------------------------------------- TRANSFER AGENT FEES. OppenheimerFunds Services (OFS), a division of the Manager, acts as the transfer and shareholder servicing agent for the Fund. The Fund pays OFS a per account fee. For the six months ended January 31, 2006, the Fund paid $2,840,520 to OFS for services to the Fund. Additionally, Class Y shares are subject to minimum fees of $10,000 per annum for assets of $10 million or more. The Class Y shares are subject to the minimum fees in the event that the per account fee does not equal or exceed the applicable minimum fees. OFS may voluntarily waive the minimum fees. - -------------------------------------------------------------------------------- DISTRIBUTION AND SERVICE PLAN (12B-1) FEES. Under its General Distributor's Agreement with the Fund, OppenheimerFunds Distributor, Inc. (the Distributor) acts as the Fund's principal underwriter in the continuous public offering of the Fund's classes of shares. - -------------------------------------------------------------------------------- SERVICE PLAN FOR CLASS A SHARES. The Fund has adopted a Service Plan for Class A shares. It reimburses the Distributor for a portion of its costs incurred for services provided to accounts that hold Class A shares. Reimbursement is made periodically at an annual rate of up to 0.25% of the average annual net assets of Class A shares of the Fund. The Distributor currently uses all of those fees to pay dealers, brokers, banks and other financial institutions periodically for providing personal services and maintenance of accounts of their customers that hold Class A shares. Any unreimbursed expenses the Distributor incurs with respect to Class A shares in any fiscal year cannot be recovered in subsequent years. Fees incurred by the Fund under the plan are detailed in the Statement of Operations. - -------------------------------------------------------------------------------- DISTRIBUTION AND SERVICE PLANS FOR CLASS B, CLASS C AND CLASS N SHARES. The Fund has adopted Distribution and Service Plans for Class B, Class C and Class N shares to compensate the Distributor for its services in connection with the distribution of those shares and servicing accounts. Under the plans, the Fund pays the Distributor an annual asset-based sales charge of 0.75% on Class B and Class C shares and 0.25% on Class N shares. The Distributor also receives a service fee of up to 0.25% per year under each plan. If either the Class B, Class C or Class N plan is terminated by the Fund or by the shareholders of a class, the Board of Trustees and its independent trustees must determine whether the Distributor shall be entitled to payment from the Fund of all or a portion of the service fee and/or asset-based sales charge in respect to shares sold prior to the effective date of such termination. The Distributor's aggregate uncompensated expenses under the plan at January 31, 2006 for Class B, Class C and Class N shares were $5,665,362, 47 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS Unaudited / Continued - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 4. FEES AND OTHER TRANSACTIONS WITH AFFILIATES Continued $3,938,973 and $736,943, respectively. Fees incurred by the Fund under the plans are detailed in the Statement of Operations. - -------------------------------------------------------------------------------- SALES CHARGES. Front-end sales charges and contingent deferred sales charges (CDSC) do not represent expenses of the Fund. They are deducted from the proceeds of sales of Fund shares prior to investment or from redemption proceeds prior to remittance, as applicable. The sales charges retained by the Distributor from the sale of shares and the CDSC retained by the Distributor on the redemption of shares is shown in the table below for the period indicated. CLASS A CLASS B CLASS C CLASS N CLASS A CONTINGENT CONTINGENT CONTINGENT CONTINGENT FRONT-END DEFERRED DEFERRED DEFERRED DEFERRED CHARGES SALES CHARGES SALES CHARGES SALES CHARGES SALES CHARGES SIX MONTHS RETAINED BY RETAINED BY RETAINED BY RETAINED BY RETAINED BY ENDED DISTRIBUTOR DISTRIBUTOR DISTRIBUTOR DISTRIBUTOR DISTRIBUTOR - ---------------------------------------------------------------------------------------------------------------------------- January 31, 2006 $778,338 $911 $320,610 $19,318 $13,756 - ---------------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- WAIVERS AND REIMBURSEMENTS OF EXPENSES. OFS has voluntarily agreed to limit transfer and shareholder servicing agent fees for all classes to 0.35% of average annual net assets per class. This undertaking may be amended or withdrawn at any time. - -------------------------------------------------------------------------------- 5. FOREIGN CURRENCY CONTRACTS A foreign currency contract is a commitment to purchase or sell a foreign currency at a future date, at a negotiated rate. The Fund may enter into foreign currency contracts to settle specific purchases or sales of securities denominated in a foreign currency and for protection from adverse exchange rate fluctuation. Risks to the Fund include the potential inability of the counterparty to meet the terms of the contract. The net U.S. dollar value of foreign currency underlying all contractual commitments held by the Fund and the resulting unrealized appreciation or depreciation are determined using prevailing foreign currency exchange rates. Unrealized appreciation and depreciation on foreign currency contracts are reported in the Statement of Assets and Liabilities as a receivable or payable and in the Statement of Operations with the change in unrealized appreciation or depreciation. The Fund may realize a gain or loss upon the closing or settlement of the foreign transaction. Contracts closed or settled with the same broker are recorded as net realized gains or losses. Such realized gains and losses are reported with all other foreign currency gains and losses in the Statement of Operations. As of January 31, 2006, the Fund had outstanding foreign currency contracts as follows: EXPIRATION CONTRACT AMOUNT VALUATION AS OF UNREALIZED CONTRACT DESCRIPTION DATES (000S) JANUARY 31, 2006 DEPRECIATION - ----------------------------------------------------------------------------------------------------- CONTRACTS TO SELL Canadian Dollar [CAD] 2/1/06-2/2/06 463CAD $ 406,113 $ 2,385 48 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND - -------------------------------------------------------------------------------- 6. ILLIQUID OR RESTRICTED SECURITIES As of January 31, 2006, investments in securities included issues that are illiquid or restricted. Restricted securities are purchased in private placement transactions, are not registered under the Securities Act of 1933, may have contractual restrictions on resale, and are valued under methods approved by the Board of Trustees as reflecting fair value. A security may also be considered illiquid if it lacks a readily available market or if its valuation has not changed for a certain period of time. The Fund will not invest more than 10% of its net assets (determined at the time of purchase and reviewed periodically) in illiquid or restricted securities. Certain restricted securities, eligible for resale to qualified institutional investors, are not subject to that limitation. Securities that are illiquid or restricted are marked with the applicable footnote on the Statement of Investments. Information concerning restricted securities is as follows: ACQUISITION VALUATION AS OF UNREALIZED SECURITY DATES COST JANUARY 31, 2006 APPRECIATION - ------------------------------------------------------------------------------------ Mission Oil & Gas, Inc. 1/18/05 $ 401,683 $ 571,643 $ 169,960 Tusk Energy Corp 11/15/04 463,330 863,053 399,723 -------------------------------------------- $ 865,013 $ 1,434,696 $ 569,683 ============================================ - -------------------------------------------------------------------------------- 7. SECURITIES LENDING The Fund lends portfolio securities from time to time in order to earn additional income. In return, the Fund receives collateral in the form of U.S. Treasury obligations or cash, against the loaned securities and maintains collateral in an amount not less than 100% of the market value of the loaned securities during the period of the loan. The market value of the loaned securities is determined at the close of business of the funds and any additional required collateral is delivered to the Fund on the next business day. If the borrower defaults on its obligation to return the securities loaned because of insolvency or other reasons, the Fund could experience delays and cost in recovering the securities loaned or in gaining access to the collateral. Cash collateral is invested in cash equivalents. The Fund retains a portion of the interest earned from the collateral. The Fund continues to receive the economic benefit of interest or dividends paid on the securities loaned in the form of a substitute payment received from the borrower. As of January 31, 2006, the Fund had on loan securities valued at $6,815,071. Collateral of $7,351,254 was received for the loans, all of which was received in cash and subsequently invested in approved instruments. - -------------------------------------------------------------------------------- 8. LITIGATION A complaint was filed as a putative class action against the Manager and OFS (and other defendants) in the U.S. District Court for the Southern District of New York on January 10, 2005 and was amended on March 4, 2005. Seven of the eight counts in the complaint, including claims against certain of the Oppenheimer funds including the Fund, as nominal defendants, and against certain present and former Directors, Trustees and officers of the funds, and the Distributor, as defendants, were dismissed with prejudice, under a 49 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND NOTES TO FINANCIAL STATEMENTS Unaudited / Continued - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 8. LITIGATION Continued court order dated March 10, 2006, in response to a motion to dismiss the suit that had been filed by the defendants. The remaining count against the Adviser Defendants alleges, among other things, that the defendants charged excessive fees in violation of section 36(b) of the Investment Company Act of 1940. The plaintiffs seek unspecified damages, an accounting of all fees paid, and an award of attorneys' fees and litigation expenses. The Adviser Defendants believe that the claims asserted in the remaining count under this lawsuit are without merit, and intend to defend the suit vigorously and contest any claimed liability. They believe that it is premature to render any opinion as to the likelihood of an outcome unfavorable to them and that no estimate can yet be made with any degree of certainty as to the amount or range of any potential loss. 50 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND PORTFOLIO PROXY VOTING POLICIES AND PROCEDURES; UPDATES TO STATEMENTS OF INVESTMENTS Unaudited - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- The Fund has adopted Portfolio Proxy Voting Policies and Procedures under which the Fund votes proxies relating to securities ("portfolio proxies") held by the Fund. A description of the Fund's Portfolio Proxy Voting Policies and Procedures is available (i) without charge, upon request, by calling the Fund toll-free at 1.800.525.7048, (ii) on the Fund's website at www.oppenheimerfunds.com, and (iii) on the SEC's website at www.sec.gov. In addition, the Fund is required to file Form N-PX, with its complete proxy voting record for the 12 months ended June 30th, no later than August 31st of each year. The Fund's voting record is available (i) without charge, upon request, by calling the Fund toll-free at 1.800.525.7048, and (ii) in the Form N-PX filing on the SEC's website at www.sec.gov. The Fund files its complete schedule of portfolio holdings with the SEC for the first quarter and the third quarter of each fiscal year on Form N-Q. The Fund's Form N-Q filings are available on the SEC's website at http://www.sec.gov. Those forms may be reviewed and copied at the SEC's Public Reference Room in Washington D.C. Information on the operation of the Public Reference Room may be obtained by calling 1-800-SEC-0330. 51 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND BOARD APPROVAL OF THE FUND'S INVESTMENT ADVISORY AGREEMENT Unaudited - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- Each year, the Board of Trustees (the "Board"), including a majority of the independent Trustees, is required to determine whether to renew the Fund's investment advisory agreement (the "Agreement"). The Investment Company Act of 1940, as amended, requires that the Board request and evaluate, and that the Manager provide, such information as may be reasonably necessary to evaluate the terms of the Agreement. The Board employs an independent consultant to prepare a report that provides information, including comparative information, that the Board requests for that purpose. In addition, the Board receives information throughout the year regarding Fund services, fees, expenses and performance. The Manager and the independent consultant provided information to the Board on the following factors: (i) the nature, quality and extent of the Manager's services, (ii) the investment performance of the Fund and the Manager, (iii) the fees and expenses of the Fund, including comparative expense information, (iv) the profitability of the Manager, including an analysis of the cost of providing services, (v) whether economies of scale are realized as the Fund grows and whether fee levels reflect these economies of scale for Fund investors and (vi) other benefits to the Manager from its relationship with the Fund. Outlined below is a summary of the principal information considered by the Board as well as the Board's conclusions. NATURE, QUALITY, AND EXTENT OF SERVICES. The Board considered information on the nature and extent of the services provided to the Fund and information regarding the Manager's key personnel that provide such services. The Manager's duties include providing the Fund with the services of the portfolio managers and the Manager's investment team, who provide research, analysis and other advisory services in regard to the Fund's investments; securities trading services; oversight of third party service providers; monitoring compliance with applicable Fund policies and procedures and adherence to the Fund's investment restrictions. The Manager is responsible for providing certain administrative services to the Fund as well. Those services include providing and supervising all administrative and clerical personnel that are necessary in order to provide effective corporate administration for the Fund; compiling and maintaining records with respect to the Fund's operations; preparing and filing reports required by the Securities and Exchange Commission; preparing periodic reports regarding the operations of the Fund for its shareholders; preparing proxy materials for shareholder meetings; and preparing the registration statements required by Federal and state securities laws for the sale of the Fund's shares. The Manager also provides the Fund with office space, facilities and equipment. 52 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND The Board also considered the quality of the services provided and the quality of the Manager's resources that are available to the Fund. The Board took account of the fact that the Manager has had over forty years of experience as an investment adviser and that its assets under management rank it among the top mutual fund managers in the United States. The Board evaluated the Manager's administrative, accounting, legal and compliance services, and information the Board has received regarding the experience and professional qualifications of the Manager's key personnel and the size and functions of its staff providing investment management services to the Fund. The Board also considered compliance reports from the Fund's Chief Compliance Officer. In its evaluation of the quality of the portfolio management services provided, the Board considered the experience of Nikolaos Monoyios and Mark Zavanelli and the Manager's Main Street investment team and analysts. Messrs. Monoyios and Zavanelli have had over 28 and 14 years of experience managing equity and international investments. The Board members also considered the totality of their experiences with the Manager, as directors or trustees of the Fund and other funds advised by the Manager. In light of the foregoing, the Board concluded that the Fund benefits from the services provided under the Agreement as a result of the Manager's experience, reputation, personnel, operations, and resources. INVESTMENT PERFORMANCE OF THE MANAGER AND THE FUND. During the year, the Manager provided information on the performance of the Fund and the Manager at each Board meeting, including comparative performance information. The Board also reviewed information, prepared by the Manager and by the independent consultant, comparing the Fund's historical performance to relevant market indices and to the performance of other multi-cap core funds (including both funds advised by the Manager and funds advised by other investment advisers). The Board noted that although the Fund's one-year performance was below its peer group median, its three-year performance was better than its peer group median. COSTS OF SERVICES AND PROFITS REALIZED BY THE MANAGER. The Board considered information regarding the Manager's costs in serving as the Fund's investment adviser, including the costs associated with the personnel and systems necessary to manage the Fund, and information regarding the Manager's profitability from its relationship with the Fund. The Board reviewed the fees paid to the Manager and the other expenses borne by the Fund. The Board also evaluated the comparability of the fees charged and the services provided to the Fund to the fees and services for other clients or accounts advised by the Manager. The independent consultant provided comparative data in regard to the fees and expenses of the Fund, other multi-cap core funds and other funds with comparable asset levels and distribution features. The Board noted that the Fund's contractual 53 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND BOARD APPROVAL OF THE FUND'S INVESTMENT ADVISORY AGREEMENT Unaudited / Continued - -------------------------------------------------------------------------------- and actual management fees and its total expenses are all lower than its peer group average and its contractual management fees are lower than its expense group median, although its actual management fees and total expenses are at its expense group median. ECONOMIES OF SCALE. The Board reviewed whether the Fund's advisory fee shares with shareholders economies of scale that the Manager may realize in managing and supporting the Fund. The Board noted the Fund's breakpoints, which are intended to share with shareholders economies of scale that may exist as the Fund grows. Based on the Board's evaluation, the Manager agreed to a revised breakpoint schedule, effective January 1, 2006, that reduced the management fee on average annual net assets over $5 billion to 0.58%. OTHER BENEFITS TO THE MANAGER. In addition to considering the profits realized by the Manager, the Board considered information that was provided regarding the direct and indirect benefits the Manager receives as a result of its relationship with the Fund, including compensation paid to the Manager's affiliates and research provided to the Manager in connection with permissible brokerage arrangements (soft dollar arrangements). The Board also considered that the Manager must be able to pay and retain experienced professional personnel at competitive rates to provide services to the Fund and that maintaining the financial viability of the Manager is important in order for the Manager to continue to provide significant services to the Fund and its shareholders. CONCLUSIONS. These factors were also considered by the independent Trustees meeting separately from the full Board, assisted by experienced counsel to the Fund and to the independent Trustees. Fund counsel and the independent Trustees' counsel are both independent of the Manager within the meaning and intent of the Securities and Exchange Commission Rules. Based on its review of the information it received and its evaluations described above, the Board, including a majority of the independent Trustees, decided to continue the advisory agreement for another year. In arriving at this decision, the Board did not single out any factor or factors as being more important than others, but considered all of the factors together. The Board judged the terms and conditions of the advisory agreement, including the management fee, in light of all of the surrounding circumstances. 54 | OPPENHEIMER MAIN STREET OPPORTUNITY FUND ITEM 2. CODE OF ETHICS. Not applicable to semiannual reports. ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. Not applicable to semiannual reports. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. Not applicable to semiannual reports. ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS Not applicable. ITEM 6. SCHEDULE OF INVESTMENTS. Not applicable. ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable. ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable. ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS. Not applicable. ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS. THE FUND'S GOVERNANCE COMMITTEE PROVISIONS WITH RESPECT TO NOMINATIONS OF DIRECTORS/TRUSTEES TO THE RESPECTIVE BOARDS 1. The Fund's Governance Committee (the "Committee") will evaluate potential Board candidates to assess their qualifications. The Committee shall have the authority, upon approval of the Board, to retain an executive search firm to assist in this effort. The Committee may consider recommendations by business and personal contacts of current Board members and by executive search firms which the Committee may engage from time to time and may also consider shareholder recommendations. The Committee may consider the advice and recommendation of the Funds' investment manager and its affiliates in making the selection. 2. The Committee shall screen candidates for Board membership. The Committee has not established specific qualifications that it believes must be met by a trustee nominee. In evaluating trustee nominees, the Committee considers, among other things, an individual's background, skills, and experience; whether the individual is an "interested person" as defined in the Investment Company Act of 1940; and whether the individual would be deemed an "audit committee financial expert" within the meaning of applicable SEC rules. The Committee also considers whether the individual's background, skills, and experience will complement the background, skills, and experience of other nominees and will contribute to the Board. There are no differences in the manner in which the Committee evaluates nominees for trustees based on whether the nominee is recommended by a shareholder. 3. The Committee may consider nominations from shareholders for the Board at such times as the Committee meets to consider new nominees for the Board. The Committee shall have the sole discretion to determine the candidates to present to the Board and, in such cases where required, to shareholders. Recommendations for trustee nominees should, at a minimum, be accompanied by the following: o the name, address, and business, educational, and/or other pertinent background of the person being recommended; o a statement concerning whether the person is an "interested person" as defined in the Investment Company Act of 1940; o any other information that the Funds would be required to include in a proxy statement concerning the person if he or she was nominated; and o the name and address of the person submitting the recommendation and, if that person is a shareholder, the period for which that person held Fund shares. The recommendation also can include any additional information which the person submitting it believes would assist the Committee in evaluating the recommendation. 4. Shareholders should note that a person who owns securities issued by Massachusetts Mutual Life Insurance Company (the parent company of the Funds' investment adviser) would be deemed an "interested person" under the Investment Company Act of 1940. In addition, certain other relationships with Massachusetts Mutual Life Insurance Company or its subsidiaries, with registered broker-dealers, or with the Funds' outside legal counsel may cause a person to be deemed an "interested person." 5. Before the Committee decides to nominate an individual as a trustee, Committee members and other directors customarily interview the individual in person. In addition, the individual customarily is asked to complete a detailed questionnaire which is designed to elicit information which must be disclosed under SEC and stock exchange rules and to determine whether the individual is subject to any statutory disqualification from serving as a trustee of a registered investment company. ITEM 11. CONTROLS AND PROCEDURES. Based on their evaluation of the registrant's disclosure controls and procedures (as defined in rule 30a-3(c) under the Investment Company Act of 1940 (17 CFR 270.30a-3(c)) as of January 31, 2006, the registrant's principal executive officer and principal financial officer found the registrant's disclosure controls and procedures to provide reasonable assurances that information required to be disclosed by the registrant in the reports that it files under the Securities Exchange Act of 1934 (a) is accumulated and communicated to registrant's management, including its principal executive officer and principal financial officer, to allow timely decisions regarding required disclosure, and (b) is recorded, processed, summarized and reported, within the time periods specified in the rules and forms adopted by the U.S. Securities and Exchange Commission. There have been no changes in the registrant's internal controls over financial reporting that occurred during the registrant's second fiscal quarter of the period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. ITEM 12. EXHIBITS. (a) (1) Not applicable to semiannual reports. (2) Exhibits attached hereto. (3) Not applicable. (b) Exhibit attached hereto. 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. Oppenheimer Main Street Opportunity Fund By: /s/ John V. Murphy ---------------------------- John V. Murphy Principal Executive Officer Date: March 15, 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: /s/ John V. Murphy ---------------------------- John V. Murphy Principal Executive Officer Date: March 15, 2006 By: /s/ Brian W. Wixted ---------------------------- Brian W. Wixted Principal Financial Officer Date: March 15, 2006