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 811-5360 OPPENHEIMER MAIN STREET FUNDS, INC. (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: AUGUST Date of reporting period: 08/31/2006 ITEM 1. REPORTS TO STOCKHOLDERS. TOP HOLDINGS AND ALLOCATIONS - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- TOP TEN COMMON STOCK INDUSTRIES - -------------------------------------------------------------------------------- Oil & Gas 12.0% - -------------------------------------------------------------------------------- Diversified Financial Services 6.5 - -------------------------------------------------------------------------------- Pharmaceuticals 5.7 - -------------------------------------------------------------------------------- Insurance 5.4 - -------------------------------------------------------------------------------- Commercial Banks 4.9 - -------------------------------------------------------------------------------- Capital Markets 4.8 - -------------------------------------------------------------------------------- Health Care Providers & Services 4.7 - -------------------------------------------------------------------------------- Computers & Peripherals 4.0 - -------------------------------------------------------------------------------- Industrial Conglomerates 3.9 - -------------------------------------------------------------------------------- Aerospace & Defense 3.9 Portfolio holdings and allocations are subject to change. Percentages are as of August 31, 2006, and are based on net assets. TOP TEN COMMON STOCK HOLDINGS - -------------------------------------------------------------------------------- Exxon Mobil Corp. 3.8% - -------------------------------------------------------------------------------- General Electric Co. 2.7 - -------------------------------------------------------------------------------- Bank of America Corp. 2.4 - -------------------------------------------------------------------------------- Citigroup, Inc. 2.3 - -------------------------------------------------------------------------------- Microsoft Corp. 2.0 - -------------------------------------------------------------------------------- Chevron Corp. 1.6 - -------------------------------------------------------------------------------- Johnson & Johnson 1.6 - -------------------------------------------------------------------------------- JPMorgan Chase & Co. 1.6 - -------------------------------------------------------------------------------- Altria Group, Inc. 1.5 - -------------------------------------------------------------------------------- Pfizer, Inc. 1.4 Portfolio holdings and allocations are subject to change. Percentages are as of August 31, 2006, and are based on net assets. For more current Fund holdings, please visit www.oppenheimerfunds.com. - -------------------------------------------------------------------------------- 8 | OPPENHEIMER MAIN STREET FUND - -------------------------------------------------------------------------------- SECTOR ALLOCATION [THE FOLLOWING TABLE WAS REPRESENTED BY A PIE CHART IN THE PRINTED MATERIAL.] Financials 23.2% Information Technology 15.9 Industrials 13.3 Energy 12.7 Health Care 12.2 Consumer Staples 8.2 Consumer Discretionary 7.8 Materials 2.7 Telecommunication Services 2.6 Utilities 1.4 Portfolio holdings and allocations are subject to change. Percentages are as of August 31, 2006, and are based on the total market value of common stocks. - -------------------------------------------------------------------------------- 9 | OPPENHEIMER MAIN STREET FUND FUND PERFORMANCE DISCUSSION - -------------------------------------------------------------------------------- HOW HAS THE FUND PERFORMED? BELOW IS A DISCUSSION BY OPPENHEIMERFUNDS, INC., OF THE FUND'S PERFORMANCE DURING ITS FISCAL YEAR ENDED AUGUST 31, 2006, FOLLOWED BY A GRAPHICAL COMPARISON OF THE FUND'S PERFORMANCE TO AN APPROPRIATE BROAD-BASED MARKET INDEX. MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE. For the 12-month period ended August 31, 2006, Oppenheimer Main Street Fund's Class A shares (without sales charge) produced total returns that were higher than that of its benchmark, the S&P 500 Index, and higher than the average return of the funds reported in its peer group, the Lipper Large-Cap Core category. We attribute the Fund's strong relative performance mainly to the success of our security selection strategy. Our sector allocation strategy made more modest contributions to relative performance, while the Fund's market capitalization allocations neither significantly helped nor hurt its performance for the reporting period overall. However, on closer examination, it appears that different factors drove the Fund's performance at different times during the period. Our security selection strategy provided stronger contributions during the reporting period's first nine months, but our emphasis on the larger market capitalization ranges boosted returns over the final three months of the reporting period, offsetting earlier weakness. This pattern is consistent with our observation that the long cycle of small-cap outperformance appears to have given way to a new cycle of better returns from large- and mega- cap stocks. During the reporting period overall, the Fund received positive contributions to its relative performance from eight of the 10 economic sectors represented in the S&P 500 Index. The energy area produced particularly strong results, primarily as a result of the Fund's relatively heavy exposure to the sector. Our security selection strategy helped boost returns in the consumer staples sector, more than balancing the adverse effects of an underweighted position. Stock selections were also good in the health care, industrials and financials sectors. On the other hand, the Fund's telecommunications services and information technology holdings detracted slightly from its relative performance. Lagging performance in the telecommunications services sector was primarily due to the Fund's underweighted position, preventing the Fund from participating fully in the sector's rebound from pronounced weakness in earlier reporting periods. Although stock selection was good in information technology, our overweighted position in this weak sector had a small negative impact on relative performance. Finally, the Fund's risk management disciplines continued to work well. For example, as of the end of the reporting period, the Fund was diversified across approximately 426 individual stocks representing all of the economic sectors in the S&P 500 Index. No stock in the Fund is overweighted by more than 0.52% or underweighted by more than 0.78% 10 | OPPENHEIMER MAIN STREET FUND relative to the S&P 500 Index benchmark. As a result, the performance of the Fund is not dependent on making large, risky bets on individual stocks but on the effectiveness of our disciplined quantitative models and our active market cap allocation strategies, making Oppenheimer Main Street Fund part of THE RIGHT WAY TO INVEST. COMPARING THE FUND'S PERFORMANCE TO THE MARKET. The graphs that follow show the performance of a hypothetical $10,000 investment in each class of shares of the Fund held until August 31, 2006. In the case of Class A, Class B and Class C shares, performance is measured over a ten-fiscal-year period. In the case of Class N shares, performance is measured from inception of the class on March 1, 2001. In the case of Class Y shares, performance is measured from inception of the class on November 1, 1996. The Fund's performance reflects the deduction of the maximum initial sales charge on Class A shares, the applicable contingent deferred sales charge on Class B, Class C and Class N shares, and reinvestments of all dividends and capital gains distributions. Past performance cannot guarantee future results. The Fund's performance is compared to the performance of the S&P 500 Index. The S&P 500 Index is an unmanaged index of equity securities. Index performance reflects the reinvestment of income but does not consider the effect of transaction costs, and none of the data in the graphs shows the effect of taxes. The Fund's performance reflects the effects of the Fund's business and operating expenses. While index comparisons may be useful to provide a benchmark for the Fund's performance, it must be noted that the Fund's investments are not limited to the investments in the index. 11 | OPPENHEIMER MAIN STREET FUND FUND PERFORMANCE DISCUSSION - -------------------------------------------------------------------------------- CLASS A SHARES COMPARISON OF CHANGE IN VALUE OF $10,000 HYPOTHETICAL INVESTMENTS IN: Oppenheimer Main Street Fund(R) (Class A) S&P 500 Index - -------------------------------------------------------------------------------- [THE FOLLOWING TABLE WAS REPRESENTED BY A LINE CHART IN THE PRINTED MATERIAL.] Oppenheimer Main Street Fund(R) S&P 500 Index (Class A) 08/31/1996 9,425 10,000 11/30/1996 10,619 11,673 02/28/1997 10,987 12,252 05/31/1997 11,601 13,211 08/31/1997 12,355 14,062 11/30/1997 12,926 15,001 02/28/1998 13,963 16,539 05/31/1998 14,734 17,261 08/31/1998 12,809 15,204 11/30/1998 15,329 18,553 02/28/1999 16,283 19,807 05/31/1999 17,218 20,892 08/31/1999 17,756 21,257 11/30/1999 18,203 22,429 02/29/2000 18,297 22,129 05/31/2000 19,278 23,079 08/31/2000 20,907 24,723 11/30/2000 17,413 21,482 02/28/2001 16,781 20,316 05/31/2001 17,245 20,645 08/31/2001 15,711 18,697 11/30/2001 15,667 18,858 02/28/2002 15,547 18,384 05/31/2002 15,572 17,788 08/31/2002 13,684 15,334 11/30/2002 13,522 15,745 02/28/2003 12,330 14,216 05/31/2003 14,035 16,353 08/31/2003 14,633 17,183 11/30/2003 15,635 18,120 02/29/2004 16,842 19,689 05/31/2004 16,465 19,350 08/31/2004 16,296 19,149 11/30/2004 17,210 20,447 02/28/2005 17,781 21,061 05/31/2005 17,661 20,942 08/31/2005 18,199 21,553 11/30/2005 18,838 22,173 02/28/2006 19,485 22,829 05/31/2006 19,358 22,750 08/31/2006 19,871 23,465 AVERAGE ANNUAL TOTAL RETURNS OF CLASS A SHARES WITH SALES CHARGE OF THE FUND AT 8/31/06 1-Year 2.91% 5-Year 3.58% 10-Year 7.11% - -------------------------------------------------------------------------------- 12 | OPPENHEIMER MAIN STREET FUND CLASS B SHARES COMPARISON OF CHANGE IN VALUE OF $10,000 HYPOTHETICAL INVESTMENTS IN: Oppenheimer Main Street Fund(R) (Class B) S&P 500 Index - -------------------------------------------------------------------------------- [THE FOLLOWING TABLE WAS REPRESENTED BY A LINE CHART IN THE PRINTED MATERIAL.] Oppenheimer Main Street Fund(R) S&P 500 Index (Class B) 08/31/1996 10,000 10,000 11/30/1996 11,248 11,673 02/28/1997 11,614 12,252 05/31/1997 12,242 13,211 08/31/1997 13,012 14,062 11/30/1997 13,588 15,001 02/28/1998 14,649 16,539 05/31/1998 15,425 17,261 08/31/1998 13,384 15,204 11/30/1998 15,993 18,553 02/28/1999 16,956 19,807 05/31/1999 17,894 20,892 08/31/1999 18,420 21,257 11/30/1999 18,849 22,429 02/29/2000 18,904 22,129 05/31/2000 19,881 23,079 08/31/2000 21,521 24,723 11/30/2000 17,889 21,482 02/28/2001 17,214 20,316 05/31/2001 17,655 20,645 08/31/2001 16,056 18,697 11/30/2001 15,974 18,858 02/28/2002 15,826 18,384 05/31/2002 15,821 17,788 08/31/2002 13,888 15,334 11/30/2002 13,724 15,745 02/28/2003 12,515 14,216 05/31/2003 14,244 16,353 08/31/2003 14,851 17,183 11/30/2003 15,869 18,120 02/29/2004 17,094 19,689 05/31/2004 16,710 19,350 08/31/2004 16,539 19,149 11/30/2004 17,467 20,447 02/28/2005 18,047 21,061 05/31/2005 17,924 20,942 08/31/2005 18,470 21,553 11/30/2005 19,119 22,173 02/28/2006 19,776 22,829 05/31/2006 19,647 22,750 08/31/2006 20,168 23,465 AVERAGE ANNUAL TOTAL RETURNS OF CLASS B SHARES WITH SALES CHARGE OF THE FUND AT 8/31/06 1-Year 3.32% 5-Year 3.62% 10-Year 7.27% - -------------------------------------------------------------------------------- THE PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE, WHICH DOES NOT GUARANTEE FUTURE RESULTS. THE INVESTMENT RETURN AND PRINCIPAL VALUE OF AN INVESTMENT IN THE FUND WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE PERFORMANCE QUOTED. FOR PERFORMANCE DATA CURRENT TO THE MOST RECENT MONTH END, VISIT US AT WWW.OPPENHEIMERFUNDS.COM, OR CALL US AT 1.800.525.7048. FUND RETURNS INCLUDE CHANGES IN SHARE PRICE, REINVESTED DISTRIBUTIONS, AND THE APPLICABLE SALES CHARGE: FOR CLASS A SHARES, THE CURRENT MAXIMUM INITIAL SALES CHARGE OF 5.75%; FOR CLASS B SHARES, THE CONTINGENT DEFERRED SALES CHARGE OF 5% (1-YEAR) AND 2% (5-YEAR); AND FOR CLASS C AND N SHARES, THE CONTINGENT 1% DEFERRED SALES CHARGE FOR THE 1-YEAR PERIOD. THERE IS NO SALES CHARGE FOR CLASS Y SHARES. BECAUSE CLASS B SHARES CONVERT TO CLASS A SHARES 72 MONTHS AFTER PURCHASE, THE 10-YEAR RETURN FOR CLASS B SHARES USES CLASS A PERFORMANCE FOR THE PERIOD AFTER CONVERSION. SEE PAGE 17 FOR FURTHER INFORMATION. 13 | OPPENHEIMER MAIN STREET FUND FUND PERFORMANCE DISCUSSION - -------------------------------------------------------------------------------- CLASS C SHARES COMPARISON OF CHANGE IN VALUE OF $10,000 HYPOTHETICAL INVESTMENTS IN: Oppenheimer Main Street Fund(R) (Class C) S&P 500 Index - -------------------------------------------------------------------------------- [THE FOLLOWING TABLE WAS REPRESENTED BY A LINE CHART IN THE PRINTED MATERIAL.] Oppenheimer Main Street Fund(R) S&P 500 Index (Class C) 08/31/1996 10,000 10,000 11/30/1996 11,244 11,673 02/28/1997 11,614 12,252 05/31/1997 12,237 13,211 08/31/1997 13,007 14,062 11/30/1997 13,586 15,001 02/28/1998 14,650 16,539 05/31/1998 15,426 17,261 08/31/1998 13,385 15,204 11/30/1998 15,990 18,553 02/28/1999 16,953 19,807 05/31/1999 17,895 20,892 08/31/1999 18,416 21,257 11/30/1999 18,846 22,429 02/29/2000 18,906 22,129 05/31/2000 19,878 23,079 08/31/2000 21,523 24,723 11/30/2000 17,890 21,482 02/28/2001 17,210 20,316 05/31/2001 17,651 20,645 08/31/2001 16,052 18,697 11/30/2001 15,976 18,858 02/28/2002 15,823 18,384 05/31/2002 15,818 17,788 08/31/2002 13,872 15,334 11/30/2002 13,683 15,745 02/28/2003 12,456 14,216 05/31/2003 14,150 16,353 08/31/2003 14,724 17,183 11/30/2003 15,700 18,120 02/29/2004 16,885 19,689 05/31/2004 16,474 19,350 08/31/2004 16,274 19,149 11/30/2004 17,157 20,447 02/28/2005 17,687 21,061 05/31/2005 17,537 20,942 08/31/2005 18,037 21,553 11/30/2005 18,635 22,173 02/28/2006 19,241 22,829 05/31/2006 19,081 22,750 08/31/2006 19,546 23,465 AVERAGE ANNUAL TOTAL RETURNS OF CLASS C SHARES WITH SALES CHARGE OF THE FUND AT 8/31/06 1-Year 7.36% 5-Year 4.02% 10-Year 6.93% - -------------------------------------------------------------------------------- 14 | OPPENHEIMER MAIN STREET FUND CLASS N SHARES COMPARISON OF CHANGE IN VALUE OF $10,000 HYPOTHETICAL INVESTMENTS IN: Oppenheimer Main Street Fund(R) (Class N) S&P 500 Index - -------------------------------------------------------------------------------- [THE FOLLOWING TABLE WAS REPRESENTED BY A LINE CHART IN THE PRINTED MATERIAL.] Oppenheimer Main Street Fund(R) S&P 500 Index (Class N) 03/01/2001 10,000 10,000 05/31/2001 10,259 10,162 08/31/2001 9,339 9,203 11/30/2001 9,307 9,283 02/28/2002 9,229 9,049 05/31/2002 9,235 8,756 08/31/2002 8,111 7,548 11/30/2002 8,024 7,750 02/28/2003 7,312 6,998 05/31/2003 8,313 8,050 08/31/2003 8,661 8,458 11/30/2003 9,243 8,919 02/29/2004 9,951 9,692 05/31/2004 9,717 9,524 08/31/2004 9,607 9,426 11/30/2004 10,138 10,065 02/28/2005 10,465 10,367 05/31/2005 10,384 10,308 08/31/2005 10,693 10,609 11/30/2005 11,061 10,914 02/28/2006 11,433 11,237 05/31/2006 11,349 11,198 08/31/2006 11,642 11,550 AVERAGE ANNUAL TOTAL RETURNS OF CLASS N SHARES WITH SALES CHARGE OF THE FUND AT 8/31/06 1-Year 7.87% 5-Year 4.51% Since Inception (3/1/01) 2.80% - -------------------------------------------------------------------------------- THE PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE, WHICH DOES NOT GUARANTEE FUTURE RESULTS. THE INVESTMENT RETURN AND PRINCIPAL VALUE OF AN INVESTMENT IN THE FUND WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE PERFORMANCE QUOTED. FOR PERFORMANCE DATA CURRENT TO THE MOST RECENT MONTH END, VISIT US AT WWW.OPPENHEIMERFUNDS.COM, OR CALL US AT 1.800.525.7048. FUND RETURNS INCLUDE CHANGES IN SHARE PRICE, REINVESTED DISTRIBUTIONS, AND THE APPLICABLE SALES CHARGE: FOR CLASS A SHARES, THE CURRENT MAXIMUM INITIAL SALES CHARGE OF 5.75%; FOR CLASS B SHARES, THE CONTINGENT DEFERRED SALES CHARGE OF 5% (1-YEAR) AND 2% (5-YEAR); AND FOR CLASS C AND N SHARES, THE CONTINGENT 1% DEFERRED SALES CHARGE FOR THE 1-YEAR PERIOD. THERE IS NO SALES CHARGE FOR CLASS Y SHARES. BECAUSE CLASS B SHARES CONVERT TO CLASS A SHARES 72 MONTHS AFTER PURCHASE, THE 10-YEAR RETURN FOR CLASS B SHARES USES CLASS A PERFORMANCE FOR THE PERIOD AFTER CONVERSION. SEE PAGE 17 FOR FURTHER INFORMATION. 15 | OPPENHEIMER MAIN STREET FUND FUND PERFORMANCE DISCUSSION - -------------------------------------------------------------------------------- CLASS Y SHARES COMPARISON OF CHANGE IN VALUE OF $10,000 HYPOTHETICAL INVESTMENTS IN: Oppenheimer Main Street Fund(R) (Class Y) S&P 500 Index - -------------------------------------------------------------------------------- [THE FOLLOWING TABLE WAS REPRESENTED BY A LINE CHART IN THE PRINTED MATERIAL.] Oppenheimer Main Street Fund(R) S&P 500 Index (Class Y) 11/01/1996 10,000 10,000 11/30/1996 10,623 10,755 02/28/1997 11,007 11,288 05/31/1997 11,632 12,172 08/31/1997 12,398 12,957 11/30/1997 12,976 13,821 02/28/1998 14,025 15,238 05/31/1998 14,804 15,904 08/31/1998 12,879 14,009 11/30/1998 15,418 17,094 02/28/1999 16,375 18,249 05/31/1999 17,333 19,249 08/31/1999 17,882 19,585 11/30/1999 18,339 20,666 02/29/2000 18,443 20,389 05/31/2000 19,432 21,264 08/31/2000 21,101 22,779 11/30/2000 17,583 19,792 02/28/2001 16,949 18,718 05/31/2001 17,422 19,021 08/31/2001 15,877 17,226 11/30/2001 15,843 17,375 02/28/2002 15,728 16,939 05/31/2002 15,763 16,389 08/31/2002 13,854 14,128 11/30/2002 13,691 14,507 02/28/2003 12,495 13,098 05/31/2003 14,226 15,067 08/31/2003 14,840 15,831 11/30/2003 15,862 16,695 02/29/2004 17,108 18,141 05/31/2004 16,736 17,828 08/31/2004 16,575 17,643 11/30/2004 17,521 18,839 02/28/2005 18,118 19,405 05/31/2005 18,016 19,295 08/31/2005 18,589 19,858 11/30/2005 19,258 20,429 02/28/2006 19,943 21,034 05/31/2006 19,835 20,961 08/31/2006 20,379 21,620 AVERAGE ANNUAL TOTAL RETURNS OF CLASS Y SHARES OF THE FUND AT 8/31/06 1-Year 9.63%% 5-Year 5.12% Since Inception (11/1/96) 7.51% - -------------------------------------------------------------------------------- THE PERFORMANCE DATA QUOTED REPRESENTS PAST PERFORMANCE, WHICH DOES NOT GUARANTEE FUTURE RESULTS. THE INVESTMENT RETURN AND PRINCIPAL VALUE OF AN INVESTMENT IN THE FUND WILL FLUCTUATE SO THAT AN INVESTOR'S SHARES, WHEN REDEEMED, MAY BE WORTH MORE OR LESS THAN THEIR ORIGINAL COST. CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN THE PERFORMANCE QUOTED. FOR PERFORMANCE DATA CURRENT TO THE MOST RECENT MONTH END, VISIT US AT WWW.OPPENHEIMERFUNDS.COM, OR CALL US AT 1.800.525.7048. FUND RETURNS INCLUDE CHANGES IN SHARE PRICE, REINVESTED DISTRIBUTIONS, AND THE APPLICABLE SALES CHARGE: FOR CLASS A SHARES, THE CURRENT MAXIMUM INITIAL SALES CHARGE OF 5.75%; FOR CLASS B SHARES, THE CONTINGENT DEFERRED SALES CHARGE OF 5% (1-YEAR) AND 2% (5-YEAR); AND FOR CLASS C AND N SHARES, THE CONTINGENT 1% DEFERRED SALES CHARGE FOR THE 1-YEAR PERIOD. THERE IS NO SALES CHARGE FOR CLASS Y SHARES. BECAUSE CLASS B SHARES CONVERT TO CLASS A SHARES 72 MONTHS AFTER PURCHASE, THE 10-YEAR RETURN FOR CLASS B SHARES USES CLASS A PERFORMANCE FOR THE PERIOD AFTER CONVERSION. SEE PAGE 17 FOR FURTHER INFORMATION. 16 | OPPENHEIMER MAIN STREET FUND NOTES - -------------------------------------------------------------------------------- Total returns and the ending account values in the graphs include changes in share price and reinvestment of dividends and capital gains distributions in a hypothetical investment for the periods shown. 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 2/3/88. Class A returns include the current maximum initial sales charge of 5.75%. CLASS B shares of the Fund were first publicly offered on 10/3/94. Class B returns include the applicable contingent deferred sales charge of 5% (1-year) and 2% (5-year). Because Class B shares convert to Class A shares 72 months after purchase, the 10-year return for Class B uses Class A performance for the period after conversion. 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 12/1/93. 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. 17 | OPPENHEIMER MAIN STREET FUND NOTES - -------------------------------------------------------------------------------- CLASS Y shares of the Fund were first publicly offered on 11/1/96. Class Y shares are offered only to certain institutional investors under special agreements with the Distributor. An explanation of the calculation of performance is in the Fund's Statement of Additional Information. 18 | OPPENHEIMER MAIN STREET 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 August 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 19 | OPPENHEIMER MAIN STREET FUND FUND EXPENSES - -------------------------------------------------------------------------------- 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 (3/1/06) (8/31/06) AUGUST 31, 2006 - ------------------------------------------------------------------------------------------ Class A Actual $1,000.00 $1,019.80 $4.69 - ------------------------------------------------------------------------------------------ Class A Hypothetical 1,000.00 1,020.57 4.70 - ------------------------------------------------------------------------------------------ Class B Actual 1,000.00 1,015.60 8.67 - ------------------------------------------------------------------------------------------ Class B Hypothetical 1,000.00 1,016.64 8.68 - ------------------------------------------------------------------------------------------ Class C Actual 1,000.00 1,015.80 8.47 - ------------------------------------------------------------------------------------------ Class C Hypothetical 1,000.00 1,016.84 8.47 - ------------------------------------------------------------------------------------------ Class N Actual 1,000.00 1,018.20 6.23 - ------------------------------------------------------------------------------------------ Class N Hypothetical 1,000.00 1,019.06 6.23 - ------------------------------------------------------------------------------------------ Class Y Actual 1,000.00 1,021.80 2.50 - ------------------------------------------------------------------------------------------ Class Y Hypothetical 1,000.00 1,022.74 2.50 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 August 31, 2006 are as follows: CLASS EXPENSE RATIOS - --------------------------------- Class A 0.92% - --------------------------------- Class B 1.70 - --------------------------------- Class C 1.66 - --------------------------------- Class N 1.22 - --------------------------------- Class Y 0.49 - -------------------------------------------------------------------------------- 20 | OPPENHEIMER MAIN STREET FUND STATEMENT OF INVESTMENTS August 31, 2006 - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- COMMON STOCKS--99.5% - -------------------------------------------------------------------------------- CONSUMER DISCRETIONARY--7.8% - -------------------------------------------------------------------------------- AUTO COMPONENTS--0.0% ArvinMeritor, Inc. 66,600 $ 989,010 - -------------------------------------------------------------------------------- Autoliv, Inc. 46,200 2,611,224 - -------------------------------------------------------------------------------- Tenneco, Inc. 1 48,800 1,110,200 ----------------- 4,710,434 - -------------------------------------------------------------------------------- AUTOMOBILES--0.1% Harley-Davidson, Inc. 193,300 11,309,983 - -------------------------------------------------------------------------------- Thor Industries, Inc. 32,900 1,387,722 ----------------- 12,697,705 - -------------------------------------------------------------------------------- DIVERSIFIED CONSUMER SERVICES--0.0% Jackson Hewitt Tax Service, Inc. 32,000 1,011,200 - -------------------------------------------------------------------------------- HOTELS, RESTAURANTS & LEISURE--1.8% Choice Hotels International, Inc. 23,800 902,258 - -------------------------------------------------------------------------------- Darden Restaurants, Inc. 71,100 2,516,940 - -------------------------------------------------------------------------------- Domino's Pizza, Inc. 15,200 371,640 - -------------------------------------------------------------------------------- International Game Technology 887,900 34,343,972 - -------------------------------------------------------------------------------- Jack in the Box, Inc. 1 27,700 1,329,046 - -------------------------------------------------------------------------------- Marriott International, Inc., Cl. A 194,300 7,317,338 - -------------------------------------------------------------------------------- McDonald's Corp. 1,272,500 45,682,750 - -------------------------------------------------------------------------------- MGM Mirage, Inc. 1 295,800 10,554,144 - -------------------------------------------------------------------------------- Starbucks Corp. 1 842,400 26,122,824 - -------------------------------------------------------------------------------- Starwood Hotels & Resorts Worldwide, Inc. 441,200 23,498,312 - -------------------------------------------------------------------------------- Vail Resorts, Inc. 1 30,200 1,136,124 - -------------------------------------------------------------------------------- WMS Industries, Inc. 1 20,000 536,000 - -------------------------------------------------------------------------------- Wyndham Worldwide Corp. 1 78,700 2,302,762 - -------------------------------------------------------------------------------- Yum! Brands, Inc. 944,400 46,162,272 ----------------- 202,776,382 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- HOUSEHOLD DURABLES--0.1% Ethan Allen Interiors, Inc. 31,400 $ 1,059,750 - -------------------------------------------------------------------------------- Furniture Brands International, Inc. 2 59,400 1,137,510 - -------------------------------------------------------------------------------- Leggett & Platt, Inc. 97,600 2,249,680 - -------------------------------------------------------------------------------- Tempur-Pedic International, Inc. 1 40,600 651,630 ----------------- 5,098,570 - -------------------------------------------------------------------------------- INTERNET & CATALOG RETAIL--0.1% Liberty Media Holding Corp.-Interactive, Series A 1 725,900 13,835,654 - -------------------------------------------------------------------------------- MEDIA--2.7% CBS Corp., Cl. B 609,700 17,406,935 - -------------------------------------------------------------------------------- Clear Channel Communications, Inc. 1,724,500 50,079,480 - -------------------------------------------------------------------------------- Comcast Corp., Cl. A 1 335,500 11,742,500 - -------------------------------------------------------------------------------- DirecTV Group, Inc. (The) 1 1,330,900 25,007,611 - -------------------------------------------------------------------------------- Gannett Co., Inc. 766,100 43,552,785 - -------------------------------------------------------------------------------- Liberty Media Holding Corp.-Capital, Series A 1 134,313 11,595,241 - -------------------------------------------------------------------------------- Live Nation 1 29,800 625,204 - -------------------------------------------------------------------------------- McGraw-Hill Cos., Inc. (The) 805,000 45,007,550 - -------------------------------------------------------------------------------- News Corp., Inc., Cl. A 1,059,500 20,162,285 - -------------------------------------------------------------------------------- Omnicom Group, Inc. 394,500 34,487,190 - -------------------------------------------------------------------------------- Time Warner, Inc. 339,400 5,640,828 - -------------------------------------------------------------------------------- Viacom, Inc., Cl. B 1 213,338 7,744,169 - -------------------------------------------------------------------------------- Walt Disney Co. (The) 1,065,900 31,603,935 ----------------- 304,655,713 - -------------------------------------------------------------------------------- MULTILINE RETAIL--1.0% Big Lots, Inc. 1 150,800 2,767,180 - -------------------------------------------------------------------------------- Dillard's, Inc., Cl. A 131,400 4,097,052 - -------------------------------------------------------------------------------- Dollar Tree Stores, Inc. 1 187,300 5,390,494 - -------------------------------------------------------------------------------- Family Dollar Stores, Inc. 158,500 4,052,845 - -------------------------------------------------------------------------------- J.C. Penney Co., Inc. (Holding Co.) 744,400 46,926,976 21 | OPPENHEIMER MAIN STREET FUND STATEMENT OF INVESTMENTS Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- MULTILINE RETAIL Continued Nordstrom, Inc. 1,152,400 $ 43,042,140 ----------------- 106,276,687 - -------------------------------------------------------------------------------- SPECIALTY RETAIL--1.9% AnnTaylor Stores Corp. 1 73,400 2,921,320 - -------------------------------------------------------------------------------- Barnes & Noble, Inc. 124,800 4,537,728 - -------------------------------------------------------------------------------- Charming Shoppes, Inc. 1 118,000 1,552,880 - -------------------------------------------------------------------------------- Christopher & Banks Corp. 42,100 1,025,135 - -------------------------------------------------------------------------------- Circuit City Stores, Inc./ Circuit City Group 192,100 4,535,481 - -------------------------------------------------------------------------------- Dress Barn, Inc. (The) 1 53,300 940,745 - -------------------------------------------------------------------------------- Gap, Inc. (The) 1,863,700 31,328,797 - -------------------------------------------------------------------------------- Group 1 Automotive, Inc. 23,700 1,073,610 - -------------------------------------------------------------------------------- Guess?, Inc. 1 51,400 2,097,120 - -------------------------------------------------------------------------------- Gymboree Corp. 1 37,000 1,241,350 - -------------------------------------------------------------------------------- Home Depot, Inc. 793,000 27,191,970 - -------------------------------------------------------------------------------- Limited Brands, Inc. 913,050 23,492,777 - -------------------------------------------------------------------------------- Lowe's Cos., Inc. 1,143,100 30,932,286 - -------------------------------------------------------------------------------- Men's Wearhouse, Inc. (The) 99,750 3,536,138 - -------------------------------------------------------------------------------- Michaels Stores, Inc. 116,800 5,028,240 - -------------------------------------------------------------------------------- Office Depot, Inc. 1 1,192,500 43,931,700 - -------------------------------------------------------------------------------- OfficeMax, Inc. 64,800 2,691,144 - -------------------------------------------------------------------------------- Pantry, Inc. (The) 1 20,300 951,258 - -------------------------------------------------------------------------------- Payless ShoeSource, Inc. 1 80,200 1,881,492 - -------------------------------------------------------------------------------- RadioShack Corp. 33,800 610,428 - -------------------------------------------------------------------------------- Rent-A-Center, Inc. 1 71,800 1,945,780 - -------------------------------------------------------------------------------- TJX Cos., Inc. (The) 366,400 9,801,200 - -------------------------------------------------------------------------------- Tween Brands, Inc. 1 61,000 2,077,660 ----------------- 205,326,239 - -------------------------------------------------------------------------------- TEXTILES, APPAREL & LUXURY GOODS--0.1% Brown Shoe Co., Inc. 31,200 996,840 - -------------------------------------------------------------------------------- Columbia Sportswear Co. 1 22,400 1,093,568 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- TEXTILES, APPAREL & LUXURY GOODS Continued Liz Claiborne, Inc. 92,300 $ 3,449,251 - -------------------------------------------------------------------------------- Phillips/Van Heusen Corp. 48,000 1,854,720 - -------------------------------------------------------------------------------- Skechers U.S.A., Inc., Cl. A 1 49,000 1,109,360 - -------------------------------------------------------------------------------- Wolverine World Wide, Inc. 29,000 731,670 ----------------- 9,235,409 - -------------------------------------------------------------------------------- CONSUMER STAPLES--8.1% - -------------------------------------------------------------------------------- BEVERAGES--2.2% Coca-Cola Co. (The) 2,523,900 113,095,959 - -------------------------------------------------------------------------------- Pepsi Bottling Group, Inc. (The) 287,900 10,079,379 - -------------------------------------------------------------------------------- PepsiCo, Inc. 1,959,230 127,898,534 ----------------- 251,073,872 - -------------------------------------------------------------------------------- FOOD & STAPLES RETAILING--1.1% Costco Wholesale Corp. 699,700 32,738,963 - -------------------------------------------------------------------------------- Longs Drug Stores, Inc. 24,500 1,113,035 - -------------------------------------------------------------------------------- Safeway, Inc. 1,319,300 40,805,949 - -------------------------------------------------------------------------------- Wal-Mart Stores, Inc. 1,042,800 46,634,016 ----------------- 121,291,963 - -------------------------------------------------------------------------------- FOOD PRODUCTS--1.3% Campbell Soup Co. 831,200 31,228,184 - -------------------------------------------------------------------------------- ConAgra Foods, Inc. 1,909,600 45,448,480 - -------------------------------------------------------------------------------- Dean Foods Co. 1 68,300 2,706,046 - -------------------------------------------------------------------------------- Del Monte Foods Co. 142,000 1,576,200 - -------------------------------------------------------------------------------- Flowers Foods, Inc. 23,200 629,880 - -------------------------------------------------------------------------------- General Mills, Inc. 464,000 25,162,720 - -------------------------------------------------------------------------------- Heinz (H.J.) Co. 567,500 23,744,200 - -------------------------------------------------------------------------------- Kellogg Co. 194,100 9,840,870 - -------------------------------------------------------------------------------- Kraft Foods, Inc., Cl. A 2 169,400 5,744,354 ----------------- 146,080,934 - -------------------------------------------------------------------------------- HOUSEHOLD PRODUCTS--1.7% Colgate-Palmolive Co. 1,080,300 64,666,758 22 | OPPENHEIMER MAIN STREET FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- HOUSEHOLD PRODUCTS Continued Procter & Gamble Co. (The) 1,955,385 $ 121,038,332 ----------------- 185,705,090 - -------------------------------------------------------------------------------- TOBACCO--1.8% Altria Group, Inc. 1,956,700 163,443,151 - -------------------------------------------------------------------------------- Loews Corp./Carolina Group 105,100 6,018,026 - -------------------------------------------------------------------------------- Reynolds American, Inc. 457,200 29,750,004 ----------------- 199,211,181 - -------------------------------------------------------------------------------- ENERGY--12.7% - -------------------------------------------------------------------------------- ENERGY EQUIPMENT & SERVICES--0.7% Grey Wolf, Inc. 1 156,700 1,145,477 - -------------------------------------------------------------------------------- NS Group, Inc. 1 46,600 2,121,232 - -------------------------------------------------------------------------------- Schlumberger Ltd. 1,092,700 66,982,510 - -------------------------------------------------------------------------------- Tidewater, Inc. 39,600 1,885,356 - -------------------------------------------------------------------------------- Veritas DGC, Inc. 1 53,600 3,192,952 - -------------------------------------------------------------------------------- W-H Energy Services, Inc. 1 22,200 1,120,434 ----------------- 76,447,961 - -------------------------------------------------------------------------------- OIL & GAS--12.0% Anadarko Petroleum Corp. 1,023,300 48,003,003 - -------------------------------------------------------------------------------- Apache Corp. 701,400 45,787,392 - -------------------------------------------------------------------------------- Canadian Natural Resources Ltd. 271,840 14,272,030 - -------------------------------------------------------------------------------- Chesapeake Energy Corp. 687,400 21,701,218 - -------------------------------------------------------------------------------- Chevron Corp. 2,819,360 181,566,784 - -------------------------------------------------------------------------------- Cimarex Energy Co. 91,300 3,496,790 - -------------------------------------------------------------------------------- Comstock Resources, Inc. 1 62,200 1,788,872 - -------------------------------------------------------------------------------- ConocoPhillips 2,267,696 143,839,957 - -------------------------------------------------------------------------------- Devon Energy Corp. 1,018,900 63,671,061 - -------------------------------------------------------------------------------- EOG Resources, Inc. 730,900 47,376,938 - -------------------------------------------------------------------------------- Exxon Mobil Corp. 6,293,596 425,887,641 - -------------------------------------------------------------------------------- Foundation Coal Holdings, Inc. 15,900 571,128 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- OIL & GAS Continued Frontier Oil Corp. 127,200 $ 4,159,440 - -------------------------------------------------------------------------------- General Maritime Corp. 24,500 920,220 - -------------------------------------------------------------------------------- Hess Corp. 787,400 36,047,172 - -------------------------------------------------------------------------------- Holly Corp. 41,200 1,887,784 - -------------------------------------------------------------------------------- Marathon Oil Corp. 784,401 65,497,425 - -------------------------------------------------------------------------------- Occidental Petroleum Corp. 1,561,804 79,636,386 - -------------------------------------------------------------------------------- OMI Corp. 59,200 1,333,184 - -------------------------------------------------------------------------------- Overseas Shipholding Group, Inc. 36,800 2,454,560 - -------------------------------------------------------------------------------- Paramount Resources Ltd., Cl. A 1 628,500 19,560,662 - -------------------------------------------------------------------------------- Pogo Producing Co. 75,700 3,361,837 - -------------------------------------------------------------------------------- St. Mary Land & Exploration Co. 44,300 1,807,440 - -------------------------------------------------------------------------------- Sunoco, Inc. 123,900 8,909,649 - -------------------------------------------------------------------------------- Tesoro Corp. 79,800 5,155,878 - -------------------------------------------------------------------------------- Valero Energy Corp. 1,165,674 66,909,688 - -------------------------------------------------------------------------------- W&T Offshore, Inc. 39,800 1,277,182 - -------------------------------------------------------------------------------- XTO Energy, Inc. 774,200 35,435,134 ----------------- 1,332,316,455 - -------------------------------------------------------------------------------- FINANCIALS--23.0% - -------------------------------------------------------------------------------- CAPITAL MARKETS--4.8% Ameriprise Financial, Inc. 421,300 19,266,049 - -------------------------------------------------------------------------------- Bank of New York Co., Inc. (The) 324,100 10,938,375 - -------------------------------------------------------------------------------- Bear Stearns Cos., Inc. (The) 385,900 50,302,065 - -------------------------------------------------------------------------------- Goldman Sachs Group, Inc. (The) 709,900 105,526,635 - -------------------------------------------------------------------------------- Greenhill & Co., Inc. 2 24,400 1,342,732 - -------------------------------------------------------------------------------- Janus Capital Group, Inc. 126,000 2,240,280 - -------------------------------------------------------------------------------- Jefferies Group, Inc. 125,400 3,124,968 - -------------------------------------------------------------------------------- Knight Capital Group, Inc., Cl. A 1 35,200 614,592 - -------------------------------------------------------------------------------- Lehman Brothers Holdings, Inc. 1,076,000 68,659,560 23 | OPPENHEIMER MAIN STREET FUND STATEMENT OF INVESTMENTS Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- CAPITAL MARKETS Continued Mellon Financial Corp. 1,268,100 $ 47,211,363 - -------------------------------------------------------------------------------- Merrill Lynch & Co., Inc. 1,512,200 111,192,066 - -------------------------------------------------------------------------------- Morgan Stanley 1,632,538 107,404,675 - -------------------------------------------------------------------------------- Northern Trust Corp. 5,700 319,143 - -------------------------------------------------------------------------------- Piper Jaffray Cos., Inc. 1 20,000 1,171,600 - -------------------------------------------------------------------------------- Raymond James Financial, Inc. 44,200 1,225,224 ----------------- 530,539,327 - -------------------------------------------------------------------------------- COMMERCIAL BANKS--4.9% BB&T Corp. 583,700 24,982,360 - -------------------------------------------------------------------------------- Comerica, Inc. 140,600 8,049,350 - -------------------------------------------------------------------------------- Huntington Bancshares, Inc. 153,700 3,676,504 - -------------------------------------------------------------------------------- KeyCorp 600,200 22,081,358 - -------------------------------------------------------------------------------- M&T Bank Corp. 258,100 31,606,926 - -------------------------------------------------------------------------------- National City Corp. 1,247,000 43,121,260 - -------------------------------------------------------------------------------- North Fork Bancorporation, Inc. 62,500 1,715,000 - -------------------------------------------------------------------------------- PNC Financial Services Group, Inc. 324,300 22,957,197 - -------------------------------------------------------------------------------- SunTrust Banks, Inc. 648,500 49,545,400 - -------------------------------------------------------------------------------- TCF Financial Corp. 84,800 2,210,736 - -------------------------------------------------------------------------------- TD Banknorth, Inc. 17,000 503,200 - -------------------------------------------------------------------------------- U.S. Bancorp 3,432,470 110,079,313 - -------------------------------------------------------------------------------- Wachovia Corp. 2,240,000 122,371,200 - -------------------------------------------------------------------------------- Wells Fargo & Co. 3,119,400 108,399,150 ----------------- 551,298,954 - -------------------------------------------------------------------------------- CONSUMER FINANCE--0.4% American Express Co. 777,600 40,855,104 - -------------------------------------------------------------------------------- AmeriCredit Corp. 1 275,600 6,473,844 ----------------- 47,328,948 - -------------------------------------------------------------------------------- DIVERSIFIED FINANCIAL SERVICES--6.5% Bank of America Corp. 5,165,939 265,890,880 - -------------------------------------------------------------------------------- CIT Group, Inc. 518,100 23,345,586 - -------------------------------------------------------------------------------- Citigroup, Inc. 5,248,546 259,015,745 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- DIVERSIFIED FINANCIAL SERVICES Continued International Securities Exchange, Inc., Cl. A 29,000 $ 1,233,950 - -------------------------------------------------------------------------------- JPMorgan Chase & Co. 3,857,496 176,133,267 ----------------- 725,619,428 - -------------------------------------------------------------------------------- INSURANCE--5.4% ACE Ltd. 763,500 41,122,110 - -------------------------------------------------------------------------------- AFLAC, Inc. 279,400 12,592,558 - -------------------------------------------------------------------------------- Allstate Corp. 1,456,600 84,395,404 - -------------------------------------------------------------------------------- American International Group, Inc. 1,093,505 69,787,489 - -------------------------------------------------------------------------------- AmerUs Group Co. 76,600 5,193,480 - -------------------------------------------------------------------------------- Aon Corp. 430,300 14,875,471 - -------------------------------------------------------------------------------- Assurant, Inc. 92,200 4,743,690 - -------------------------------------------------------------------------------- Berkley (W.R.) Corp. 71,600 2,506,000 - -------------------------------------------------------------------------------- Chubb Corp. 872,900 43,784,664 - -------------------------------------------------------------------------------- Cincinnati Financial Corp. 47,500 2,216,350 - -------------------------------------------------------------------------------- Genworth Financial, Inc., Cl. A 452,000 15,562,360 - -------------------------------------------------------------------------------- Hanover Insurance Group, Inc. 73,200 3,257,400 - -------------------------------------------------------------------------------- Hartford Financial Services Group, Inc. (The) 641,500 55,079,190 - -------------------------------------------------------------------------------- LandAmerica Financial Group, Inc. 39,200 2,479,008 - -------------------------------------------------------------------------------- Lincoln National Corp. 683,484 41,487,479 - -------------------------------------------------------------------------------- Loews Corp. 213,500 8,215,480 - -------------------------------------------------------------------------------- MBIA, Inc. 79,500 4,899,585 - -------------------------------------------------------------------------------- Old Republic International Corp. 116,300 2,430,670 - -------------------------------------------------------------------------------- Principal Financial Group, Inc. (The) 983,000 52,334,920 - -------------------------------------------------------------------------------- Progressive Corp. 252,100 6,199,139 - -------------------------------------------------------------------------------- Prudential Financial, Inc. 807,300 59,263,893 - -------------------------------------------------------------------------------- Safeco Corp. 47,100 2,718,141 - -------------------------------------------------------------------------------- Safety Insurance Group, Inc. 27,000 1,388,340 24 | OPPENHEIMER MAIN STREET FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- INSURANCE Continued St. Paul Travelers Cos., Inc. (The) 1,462,800 $ 64,216,920 ----------------- 600,749,741 - -------------------------------------------------------------------------------- REAL ESTATE MANAGEMENT & DEVELOPMENT--0.1% CB Richard Ellis Group, Inc., Cl. A 1 146,400 3,367,200 - -------------------------------------------------------------------------------- Jones Lang LaSalle, Inc. 46,300 3,854,938 - -------------------------------------------------------------------------------- Realogy Corp. 1 98,375 2,105,225 - -------------------------------------------------------------------------------- Trammell Crow Co. 1 22,600 777,892 ----------------- 10,105,255 - -------------------------------------------------------------------------------- THRIFTS & MORTGAGE FINANCE--0.9% Astoria Financial Corp. 171,250 5,257,375 - -------------------------------------------------------------------------------- BankUnited Financial Corp., Cl. A 39,400 1,015,338 - -------------------------------------------------------------------------------- Countrywide Financial Corp. 248,000 8,382,400 - -------------------------------------------------------------------------------- Golden West Financial Corp. 162,800 12,289,772 - -------------------------------------------------------------------------------- Hudson City Bancorp, Inc. 250,500 3,271,530 - -------------------------------------------------------------------------------- MGIC Investment Corp. 42,400 2,453,688 - -------------------------------------------------------------------------------- New York Community Bancorp, Inc. 70,300 1,153,623 - -------------------------------------------------------------------------------- PMI Group, Inc. (The) 88,800 3,839,712 - -------------------------------------------------------------------------------- Radian Group, Inc. 104,100 6,233,508 - -------------------------------------------------------------------------------- Washington Mutual, Inc. 1,243,029 52,070,485 - -------------------------------------------------------------------------------- Webster Financial Corp. 10,100 477,124 ----------------- 96,444,555 - -------------------------------------------------------------------------------- HEALTH CARE--12.1% - -------------------------------------------------------------------------------- BIOTECHNOLOGY--0.6% Amgen, Inc. 1 769,600 52,278,928 - -------------------------------------------------------------------------------- Applera Corp./Applied Biosystems Group 223,600 6,853,340 - -------------------------------------------------------------------------------- Gilead Sciences, Inc. 1 134,373 8,519,248 ----------------- 67,651,516 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- HEALTH CARE EQUIPMENT & SUPPLIES--1.1% Becton, Dickinson & Co. 675,700 $ 47,096,290 - -------------------------------------------------------------------------------- Edwards Lifesciences Corp. 1 35,900 1,676,171 - -------------------------------------------------------------------------------- Hospira, Inc. 1 33,600 1,230,768 - -------------------------------------------------------------------------------- Medtronic, Inc. 1,507,600 70,706,440 ----------------- 120,709,669 - -------------------------------------------------------------------------------- HEALTH CARE PROVIDERS & SERVICES--4.7% AmerisourceBergen Corp. 321,300 14,188,608 - -------------------------------------------------------------------------------- Cardinal Health, Inc. 996,400 67,177,288 - -------------------------------------------------------------------------------- Caremark Rx, Inc. 1,111,700 64,411,898 - -------------------------------------------------------------------------------- CIGNA Corp. 123,000 13,907,610 - -------------------------------------------------------------------------------- Express Scripts, Inc. 1 124,800 10,493,184 - -------------------------------------------------------------------------------- Genesis HealthCare Corp. 1 2,200 100,188 - -------------------------------------------------------------------------------- HCA, Inc. 793,800 39,150,216 - -------------------------------------------------------------------------------- Healthways, Inc. 1 1,700 87,754 - -------------------------------------------------------------------------------- Humana, Inc. 1 159,200 9,700,056 - -------------------------------------------------------------------------------- Laboratory Corp. of America Holdings 1 88,300 6,041,486 - -------------------------------------------------------------------------------- Magellan Health Services, Inc. 1 14,400 692,208 - -------------------------------------------------------------------------------- Manor Care, Inc. 67,300 3,513,060 - -------------------------------------------------------------------------------- McKesson Corp. 1,047,100 53,192,680 - -------------------------------------------------------------------------------- Pediatrix Medical Group, Inc. 1 58,000 2,656,400 - -------------------------------------------------------------------------------- Quest Diagnostics, Inc. 362,700 23,314,356 - -------------------------------------------------------------------------------- Sierra Health Services, Inc. 1 123,600 5,302,440 - -------------------------------------------------------------------------------- UnitedHealth Group, Inc. 2,289,794 118,954,798 - -------------------------------------------------------------------------------- WellPoint, Inc. 1 1,111,572 86,046,789 ----------------- 518,931,019 - -------------------------------------------------------------------------------- HEALTH CARE TECHNOLOGY--0.0% Emdeon Corp. 1 172,100 2,039,385 - -------------------------------------------------------------------------------- PHARMACEUTICALS--5.7% Abbott Laboratories 1,747,500 85,103,250 - -------------------------------------------------------------------------------- Alpharma, Inc., Cl. A 86,300 1,807,122 25 | OPPENHEIMER MAIN STREET FUND STATEMENT OF INVESTMENTS Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- PHARMACEUTICALS Continued Andrx Corp. 1 74,400 $ 1,773,696 - -------------------------------------------------------------------------------- Bristol-Myers Squibb Co. 1,776,800 38,645,400 - -------------------------------------------------------------------------------- Endo Pharmaceuticals Holdings, Inc. 1 56,300 1,859,589 - -------------------------------------------------------------------------------- Johnson & Johnson 2,762,944 178,651,959 - -------------------------------------------------------------------------------- King Pharmaceuticals, Inc. 1 348,400 5,651,048 - -------------------------------------------------------------------------------- Merck & Co., Inc. 3,380,250 137,069,138 - -------------------------------------------------------------------------------- Pfizer, Inc. 5,765,545 158,898,420 - -------------------------------------------------------------------------------- Sciele Pharma, Inc. 1 35,300 617,750 - -------------------------------------------------------------------------------- Wyeth 582,800 28,382,360 ----------------- 638,459,732 - -------------------------------------------------------------------------------- INDUSTRIALS--13.2% - -------------------------------------------------------------------------------- AEROSPACE & DEFENSE--3.9% Alliant Techsystems, Inc. 1 58,700 4,489,963 - -------------------------------------------------------------------------------- Armor Holdings, Inc. 1 28,500 1,506,795 - -------------------------------------------------------------------------------- Boeing Co. 1,322,400 99,047,760 - -------------------------------------------------------------------------------- General Dynamics Corp. 908,000 61,335,400 - -------------------------------------------------------------------------------- Honeywell International, Inc. 656,100 25,404,192 - -------------------------------------------------------------------------------- Lockheed Martin Corp. 917,600 75,793,760 - -------------------------------------------------------------------------------- Northrop Grumman Corp. 949,700 63,449,457 - -------------------------------------------------------------------------------- Orbital Sciences Corp. 1 40,700 736,263 - -------------------------------------------------------------------------------- Raytheon Co. 1,330,800 62,827,068 - -------------------------------------------------------------------------------- United Technologies Corp. 512,100 32,113,791 ----------------- 426,704,449 - -------------------------------------------------------------------------------- AIR FREIGHT & LOGISTICS--0.9% EGL, Inc. 1 54,700 1,672,179 - -------------------------------------------------------------------------------- FedEx Corp. 420,500 42,483,115 - -------------------------------------------------------------------------------- United Parcel Service, Inc., Cl. B 831,600 58,253,580 ----------------- 102,408,874 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- AIRLINES--0.2% AMR Corp. 1 102,100 $ 2,108,365 - -------------------------------------------------------------------------------- Continental Airlines, Inc., Cl. B 1,2 129,000 3,236,610 - -------------------------------------------------------------------------------- Southwest Airlines Co. 1,016,300 17,602,316 - -------------------------------------------------------------------------------- US Airways Group, Inc. 1 61,100 2,581,475 ----------------- 25,528,766 - -------------------------------------------------------------------------------- BUILDING PRODUCTS--0.4% Masco Corp. 1,645,100 45,092,191 - -------------------------------------------------------------------------------- USG Corp. 1 67,800 3,457,800 ----------------- 48,549,991 - -------------------------------------------------------------------------------- COMMERCIAL SERVICES & SUPPLIES--0.5% Administaff, Inc. 36,200 1,250,710 - -------------------------------------------------------------------------------- Cendant Corp. 393,500 759,455 - -------------------------------------------------------------------------------- Harland (John H.) Co. 24,400 911,584 - -------------------------------------------------------------------------------- Ikon Office Solutions, Inc. 43,200 615,600 - -------------------------------------------------------------------------------- Manpower, Inc. 96,400 5,698,204 - -------------------------------------------------------------------------------- Republic Services, Inc. 108,000 4,188,240 - -------------------------------------------------------------------------------- Robert Half International, Inc. 120,700 3,734,458 - -------------------------------------------------------------------------------- Waste Management, Inc. 1,087,500 37,279,500 ----------------- 54,437,751 - -------------------------------------------------------------------------------- CONSTRUCTION & ENGINEERING--0.1% EMCOR Group, Inc. 1 24,600 1,363,824 - -------------------------------------------------------------------------------- Granite Construction, Inc. 69,900 3,750,135 - -------------------------------------------------------------------------------- Quanta Services, Inc. 1 148,100 2,625,813 ----------------- 7,739,772 - -------------------------------------------------------------------------------- ELECTRICAL EQUIPMENT--0.9% Acuity Brands, Inc. 66,800 2,854,364 - -------------------------------------------------------------------------------- Belden CDT, Inc. 35,700 1,275,918 - -------------------------------------------------------------------------------- Cooper Industries Ltd., Cl. A 38,300 3,136,004 - -------------------------------------------------------------------------------- Emerson Electric Co. 692,300 56,872,445 - -------------------------------------------------------------------------------- General Cable Corp. 1 40,100 1,545,053 26 | OPPENHEIMER MAIN STREET FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- ELECTRICAL EQUIPMENT Continued Hubbell, Inc., Cl. B 28,000 $ 1,302,000 - -------------------------------------------------------------------------------- Rockwell Automation, Inc. 502,100 28,308,398 - -------------------------------------------------------------------------------- Smith (A.O.) Corp. 25,400 1,018,794 ----------------- 96,312,976 - -------------------------------------------------------------------------------- INDUSTRIAL CONGLOMERATES--3.9% 3M Co. 1,406,100 100,817,370 - -------------------------------------------------------------------------------- General Electric Co. 8,884,500 302,606,070 - -------------------------------------------------------------------------------- Textron, Inc. 187,500 15,723,750 - -------------------------------------------------------------------------------- Tyco International Ltd. 529,700 13,851,655 ----------------- 432,998,845 - -------------------------------------------------------------------------------- MACHINERY--1.9% AGCO Corp. 1 67,900 1,687,315 - -------------------------------------------------------------------------------- Caterpillar, Inc. 652,100 43,266,835 - -------------------------------------------------------------------------------- Crane Co. 20,700 827,586 - -------------------------------------------------------------------------------- Cummins, Inc. 24,300 2,790,126 - -------------------------------------------------------------------------------- Danaher Corp. 522,300 34,623,267 - -------------------------------------------------------------------------------- Eaton Corp. 586,600 39,008,900 - -------------------------------------------------------------------------------- Flowserve Corp. 1 38,300 1,958,662 - -------------------------------------------------------------------------------- Illinois Tool Works, Inc. 1,256,600 55,164,740 - -------------------------------------------------------------------------------- Ingersoll-Rand Co. Ltd., Cl. A 285,500 10,854,710 - -------------------------------------------------------------------------------- Kaydon Corp. 31,600 1,204,276 - -------------------------------------------------------------------------------- Manitowoc Co., Inc. (The) 39,100 1,728,220 - -------------------------------------------------------------------------------- Paccar, Inc. 103,350 5,650,145 - -------------------------------------------------------------------------------- SPX Corp. 116,200 6,135,360 - -------------------------------------------------------------------------------- Toro Co. (The) 59,800 2,392,598 - -------------------------------------------------------------------------------- Trinity Industries, Inc. 51,500 1,718,040 - -------------------------------------------------------------------------------- Valmont Industries, Inc. 12,600 657,216 - -------------------------------------------------------------------------------- Wabtec Corp. 57,400 1,619,254 ----------------- 211,287,250 - -------------------------------------------------------------------------------- ROAD & RAIL--0.5% Arkansas Best Corp. 29,100 1,284,765 - -------------------------------------------------------------------------------- Burlington Northern Santa Fe Corp. 168,700 11,294,465 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- ROAD & RAIL Continued CSX Corp. 1,197,800 $ 36,197,516 - -------------------------------------------------------------------------------- Dollar Thrifty Automotive Group, Inc. 1 13,100 559,108 - -------------------------------------------------------------------------------- Laidlaw International, Inc. 72,400 1,954,800 - -------------------------------------------------------------------------------- Norfolk Southern Corp. 37,100 1,585,283 - -------------------------------------------------------------------------------- Ryder Systems, Inc. 61,300 3,029,446 - -------------------------------------------------------------------------------- Swift Transportation Co., Inc. 1 60,700 1,407,633 ----------------- 57,313,016 - -------------------------------------------------------------------------------- TRADING COMPANIES & DISTRIBUTORS--0.0% Applied Industrial Technologies, Inc. 51,350 1,161,024 - -------------------------------------------------------------------------------- WESCO International, Inc. 1 25,500 1,491,750 ----------------- 2,652,774 - -------------------------------------------------------------------------------- INFORMATION TECHNOLOGY--15.9% - -------------------------------------------------------------------------------- COMMUNICATIONS EQUIPMENT--2.6% Cisco Systems, Inc. 1 6,481,500 142,528,185 - -------------------------------------------------------------------------------- CommScope, Inc. 1 76,700 2,240,407 - -------------------------------------------------------------------------------- InterDigital Communications Corp. 1 31,800 1,056,714 - -------------------------------------------------------------------------------- Lucent Technologies, Inc. 1 3,420,300 7,969,299 - -------------------------------------------------------------------------------- Motorola, Inc. 3,830,700 89,561,766 - -------------------------------------------------------------------------------- Polycom, Inc. 1 159,800 3,801,642 - -------------------------------------------------------------------------------- QUALCOMM, Inc. 1,211,875 45,651,331 ----------------- 292,809,344 - -------------------------------------------------------------------------------- COMPUTERS & PERIPHERALS--4.0% Apple Computer, Inc. 1 209,000 14,180,650 - -------------------------------------------------------------------------------- Dell, Inc. 1 4,411,500 99,479,325 - -------------------------------------------------------------------------------- EMC Corp. 1 3,263,200 38,016,280 - -------------------------------------------------------------------------------- Hewlett-Packard Co. 4,215,000 154,100,400 - -------------------------------------------------------------------------------- International Business Machines Corp. 1,473,700 119,325,489 - -------------------------------------------------------------------------------- Komag, Inc. 1 25,200 906,192 27 | OPPENHEIMER MAIN STREET FUND STATEMENT OF INVESTMENTS Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- COMPUTERS & PERIPHERALS Continued NCR Corp. 1 83,200 $ 2,894,528 - -------------------------------------------------------------------------------- Western Digital Corp. 1 545,000 9,973,500 ----------------- 438,876,364 - -------------------------------------------------------------------------------- ELECTRONIC EQUIPMENT & INSTRUMENTS--0.4% Agilent Technologies, Inc. 1 984,300 31,655,088 - -------------------------------------------------------------------------------- Brightpoint, Inc. 75,000 1,248,000 - -------------------------------------------------------------------------------- Mettler-Toledo International, Inc. 1 11,900 725,186 - -------------------------------------------------------------------------------- Plexus Corp. 1 66,800 1,323,976 - -------------------------------------------------------------------------------- Solectron Corp. 1 1,192,900 3,745,706 - -------------------------------------------------------------------------------- Tech Data Corp. 1 74,400 2,595,816 ----------------- 41,293,772 - -------------------------------------------------------------------------------- INTERNET SOFTWARE & SERVICES--0.7% Digital Insight Corp. 1 22,700 590,427 - -------------------------------------------------------------------------------- EarthLink, Inc. 1 238,200 1,750,770 - -------------------------------------------------------------------------------- Google, Inc., Cl. A 1 193,100 73,094,143 - -------------------------------------------------------------------------------- RealNetworks, Inc. 1 111,700 1,232,051 - -------------------------------------------------------------------------------- United Online, Inc. 198,000 2,271,060 - -------------------------------------------------------------------------------- VeriSign, Inc. 1 129,000 2,610,960 ----------------- 81,549,411 - -------------------------------------------------------------------------------- IT SERVICES--1.1% Affiliated Computer Services, Inc., Cl. A 1 54,400 2,792,896 - -------------------------------------------------------------------------------- Ceridian Corp. 1 92,500 2,207,975 - -------------------------------------------------------------------------------- Computer Sciences Corp. 1 473,682 22,443,053 - -------------------------------------------------------------------------------- Convergys Corp. 1 144,500 3,015,715 - -------------------------------------------------------------------------------- CSG Systems International, Inc. 1 41,400 1,114,488 - -------------------------------------------------------------------------------- First Data Corp. 1,678,200 72,112,254 - -------------------------------------------------------------------------------- Fiserv, Inc. 1 154,500 6,824,265 - -------------------------------------------------------------------------------- MoneyGram International, Inc. 57,200 1,796,080 - -------------------------------------------------------------------------------- MPS Group, Inc. 1 84,100 1,182,446 - -------------------------------------------------------------------------------- Paychex, Inc. 219,600 7,885,836 ----------------- 121,375,008 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- OFFICE ELECTRONICS--0.3% Xerox Corp. 1 2,565,400 $ 37,993,574 - -------------------------------------------------------------------------------- SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT--3.2% Analog Devices, Inc. 391,700 12,001,688 - -------------------------------------------------------------------------------- Applied Materials, Inc. 896,600 15,134,608 - -------------------------------------------------------------------------------- Atmel Corp. 1 326,800 1,885,636 - -------------------------------------------------------------------------------- Cymer, Inc. 1 63,700 2,621,255 - -------------------------------------------------------------------------------- Freescale Semiconductor, Inc., Cl. B 1 1,608,566 49,720,775 - -------------------------------------------------------------------------------- Intel Corp. 5,691,200 111,206,048 - -------------------------------------------------------------------------------- Intersil Corp., Cl. A 133,500 3,384,225 - -------------------------------------------------------------------------------- Lam Research Corp. 1 156,500 6,696,635 - -------------------------------------------------------------------------------- MEMC Electronic Materials, Inc. 1 107,500 4,158,100 - -------------------------------------------------------------------------------- Micron Technology, Inc. 1 2,270,700 39,237,696 - -------------------------------------------------------------------------------- OmniVision Technologies, Inc. 1,2 124,300 2,063,380 - -------------------------------------------------------------------------------- ON Semiconductor Corp. 1 226,200 1,359,462 - -------------------------------------------------------------------------------- Texas Instruments, Inc. 3,186,200 103,838,258 - -------------------------------------------------------------------------------- Zoran Corp. 1 72,600 1,293,732 ----------------- 354,601,498 - -------------------------------------------------------------------------------- SOFTWARE--3.6% BEA Systems, Inc. 1 561,100 7,703,903 - -------------------------------------------------------------------------------- BMC Software, Inc. 1 222,300 5,917,626 - -------------------------------------------------------------------------------- Cadence Design Systems, Inc. 1 142,100 2,334,703 - -------------------------------------------------------------------------------- Fair Isaac Corp. 110,500 3,868,605 - -------------------------------------------------------------------------------- Intuit, Inc. 1 1,194,100 36,085,702 - -------------------------------------------------------------------------------- Mentor Graphics Corp. 1 42,400 614,800 - -------------------------------------------------------------------------------- Microsoft Corp. 8,636,654 221,875,641 - -------------------------------------------------------------------------------- MicroStrategy, Inc., Cl. A 1 10,000 912,000 - -------------------------------------------------------------------------------- Oracle Corp. 1 6,817,200 106,689,180 - -------------------------------------------------------------------------------- Reynolds & Reynolds Co., Cl. A 30,900 1,185,324 - -------------------------------------------------------------------------------- Synopsys, Inc. 1 210,200 3,985,392 28 | OPPENHEIMER MAIN STREET FUND VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- SOFTWARE Continued TIBCO Software, Inc. 1 330,500 $ 2,597,730 ----------------- 393,770,606 - -------------------------------------------------------------------------------- MATERIALS--2.7% - -------------------------------------------------------------------------------- CHEMICALS--0.9% Air Products & Chemicals, Inc. 573,200 37,997,428 - -------------------------------------------------------------------------------- Ecolab, Inc. 88,300 3,936,414 - -------------------------------------------------------------------------------- Fuller (H.B.) Co. 53,800 1,034,574 - -------------------------------------------------------------------------------- Hercules, Inc. 1 74,100 1,155,960 - -------------------------------------------------------------------------------- NewMarket Corp. 21,500 1,331,495 - -------------------------------------------------------------------------------- OM Group, Inc. 1 35,300 1,412,000 - -------------------------------------------------------------------------------- PPG Industries, Inc. 437,400 27,713,664 - -------------------------------------------------------------------------------- Rohm & Haas Co. 559,600 24,678,360 - -------------------------------------------------------------------------------- Tronox, Inc., Cl. B 61,363 791,583 ----------------- 100,051,478 - -------------------------------------------------------------------------------- CONSTRUCTION MATERIALS--0.0% Eagle Materials, Inc. 32,900 1,179,465 - -------------------------------------------------------------------------------- CONTAINERS & PACKAGING--0.1% Packaging Corp. of America 39,700 918,658 - -------------------------------------------------------------------------------- Pactiv Corp. 1 159,900 4,274,127 - -------------------------------------------------------------------------------- Temple-Inland, Inc. 63,100 2,809,212 ----------------- 8,001,997 - -------------------------------------------------------------------------------- METALS & MINING--1.7% AK Steel Holding Corp. 1 214,600 2,706,106 - -------------------------------------------------------------------------------- Carpenter Technology Corp. 52,300 5,012,432 - -------------------------------------------------------------------------------- Chaparral Steel Co. 1 18,300 1,306,986 - -------------------------------------------------------------------------------- Commercial Metals Co. 79,400 1,714,246 - -------------------------------------------------------------------------------- Freeport-McMoRan Copper & Gold, Inc., Cl. B 818,200 47,627,422 - -------------------------------------------------------------------------------- Nucor Corp. 993,100 48,532,797 - -------------------------------------------------------------------------------- Phelps Dodge Corp. 452,200 40,471,900 - -------------------------------------------------------------------------------- Quanex Corp. 73,650 2,528,405 VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- METALS & MINING Continued Reliance Steel & Aluminum Co. 154,200 $ 5,053,134 - -------------------------------------------------------------------------------- Ryerson, Inc. 42,100 891,678 - -------------------------------------------------------------------------------- Schnitzer Steel Industries, Inc. 34,000 1,079,500 - -------------------------------------------------------------------------------- Southern Copper Corp. 2 265,300 24,492,496 - -------------------------------------------------------------------------------- Steel Dynamics, Inc. 57,300 3,024,867 - -------------------------------------------------------------------------------- United States Steel Corp. 72,900 4,240,593 - -------------------------------------------------------------------------------- Worthington Industries, Inc. 129,800 2,480,478 ----------------- 191,163,040 - -------------------------------------------------------------------------------- PAPER & FOREST PRODUCTS--0.0% MeadWestvaco Corp. 14,425 368,559 - -------------------------------------------------------------------------------- TELECOMMUNICATION SERVICES--2.6% - -------------------------------------------------------------------------------- DIVERSIFIED TELECOMMUNICATION SERVICES--2.1% AT&T, Inc. 1,152,836 35,887,785 - -------------------------------------------------------------------------------- BellSouth Corp. 1,250,800 50,932,576 - -------------------------------------------------------------------------------- CenturyTel, Inc. 142,700 5,682,314 - -------------------------------------------------------------------------------- Citizens Communications Co. 322,500 4,447,275 - -------------------------------------------------------------------------------- Embarq Corp. 1 93,991 4,431,676 - -------------------------------------------------------------------------------- Qwest Communications International, Inc. 1 6,894,400 60,739,664 - -------------------------------------------------------------------------------- Verizon Communications, Inc. 1,910,000 67,193,800 ----------------- 229,315,090 - -------------------------------------------------------------------------------- WIRELESS TELECOMMUNICATION SERVICES--0.5% Leap Wireless International, Inc. 1 15,700 726,282 - -------------------------------------------------------------------------------- Sprint Nextel Corp. 3,316,831 56,120,781 ----------------- 56,847,063 - -------------------------------------------------------------------------------- UTILITIES--1.4% - -------------------------------------------------------------------------------- ELECTRIC UTILITIES--0.5% American Electric Power Co., Inc. 1,264,000 46,110,720 29 | OPPENHEIMER MAIN STREET FUND STATEMENT OF INVESTMENTS Continued - -------------------------------------------------------------------------------- VALUE SHARES SEE NOTE 1 - -------------------------------------------------------------------------------- ELECTRIC UTILITIES Continued Edison International, Inc. 168,200 $ 7,340,248 - -------------------------------------------------------------------------------- Progress Energy, Inc. 45,000 1,994,850 - -------------------------------------------------------------------------------- Progress Energy, Inc., Contingent Value Obligation 1,3 680,100 210,831 ----------------- 55,656,649 - -------------------------------------------------------------------------------- ENERGY TRADERS--0.1% Constellation Energy Group, Inc. 172,780 10,382,350 - -------------------------------------------------------------------------------- Mirant Corp. 1 6,987 202,413 ----------------- 10,584,763 - -------------------------------------------------------------------------------- GAS UTILITIES--0.1% ONEOK, Inc. 124,000 4,745,480 - -------------------------------------------------------------------------------- MULTI-UTILITIES & UNREGULATED POWER--0.7% Alliant Energy Corp. 70,300 2,572,277 - -------------------------------------------------------------------------------- Avista Corp. 26,100 632,664 - -------------------------------------------------------------------------------- Duke Energy Corp. 1,228,400 36,852,000 - -------------------------------------------------------------------------------- PG&E Corp. 1,011,800 42,424,773 - -------------------------------------------------------------------------------- 82,481,714 ----------------- Total Common Stocks (Cost $8,887,651,244) 11,056,228,317 - -------------------------------------------------------------------------------- PREFERRED STOCKS--0.0% - -------------------------------------------------------------------------------- Wachovia Corp., Dividend Equalization Preferred Shares 1 (Cost $0) 100,000 200 UNITS - -------------------------------------------------------------------------------- RIGHTS, WARRANTS AND CERTIFICATES--0.0% - -------------------------------------------------------------------------------- Dime Bancorp, Inc. Wts., Exp. 1/2/10 1 485,800 58,296 - -------------------------------------------------------------------------------- Lucent Technologies, Inc. Wts., Exp 12/10/07 1 68,554 16,110 ----------------- Total Rights, Warrants and Certificates (Cost $0) 74,406 PRINCIPAL VALUE AMOUNT SEE NOTE 1 - -------------------------------------------------------------------------------- JOINT REPURCHASE AGREEMENTS--0.5% - -------------------------------------------------------------------------------- Undivided interest of 4.86% in joint repurchase agreement (Principal Amount/Value $1,235,729,000, with a maturity value of $1,235,908,181) with UBS Warburg LLC, 5.22%, dated 8/31/06, to be repurchased at $60,067,709 on 9/1/06, collateralized by Federal National Mortgage Assn., 6%-7%, 3/1/36-8/1/36, with a value of $1,262,388,232 (Cost $60,059,000) $60,059,000 $ 60,059,000 - -------------------------------------------------------------------------------- Total Investments, at Value (excluding Investments Purchased with Cash Collateral from Securities Loaned) (Cost $8,947,710,244) 11,116,361,923 - -------------------------------------------------------------------------------- INVESTMENTS PURCHASED WITH CASH COLLATERAL FROM SECURITIES LOANED--0.3% 4 - -------------------------------------------------------------------------------- JOINT REPURCHASE AGREEMENTS--0.3% Undivided interest of 0.47% in joint repurchase agreement (Principal Amount/Value $3,200,000,000, with a maturity value of $3,200,470,222) with Nomura Securities, 5.29%, dated 8/31/06, to be repurchased at $15,161,897 on 9/1/06, collateralized by U.S. Agency Mortgages, 0.00%-22.12%, 3/15/14-6/25/43, with a value of $3,264,000,000 15,159,669 15,159,669 - -------------------------------------------------------------------------------- Undivided interest of 2% in joint repurchase agreement (Principal Amount/Value $1,000,000,000 with a maturity value of $1,000,147,222) with ING Financial Markets LLC, 5.30%, dated 8/31/06, to be repurchased at $20,002,944 on 9/1/06, collateralized by U.S. Agency Mortgages, 4.50%-6.50%, 10/1/18-8/1/36, with a value of $1,020,000,530 20,000,000 20,000,000 ----------------- Total Investments Purchased with Cash Collateral from Securities Loaned (Cost $35,159,669) 35,159,669 - -------------------------------------------------------------------------------- TOTAL INVESTMENTS, AT VALUE (COST $8,982,869,913) 100.3% 11,151,521,592 - -------------------------------------------------------------------------------- LIABILITIES IN EXCESS OF OTHER ASSETS (0.3) (33,532,813) -------------------------------- NET ASSETS 100.0% $ 11,117,988,779 ================================ 30 | OPPENHEIMER MAIN STREET FUND FOOTNOTES TO STATEMENT OF INVESTMENTS 1. Non-income producing security. 2. Partial or fully-loaned security. See Note 7 of accompanying Notes. 3. Illiquid security. The aggregate value of illiquid securities as of August 31, 2006 was $210,831, which represents less than 0.005% of the Fund's net assets. See Note 6 of accompanying Notes. 4. The security/securities have 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 accompanying Notes. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 31 | OPPENHEIMER MAIN STREET FUND STATEMENT OF ASSETS AND LIABILITIES August 31, 2006 - -------------------------------------------------------------------------------- - --------------------------------------------------------------------------------------------------------- ASSETS - --------------------------------------------------------------------------------------------------------- Investments, at value (cost $8,982,869,913)--see accompanying statement of investments $11,151,521,592 - --------------------------------------------------------------------------------------------------------- Cash 6,489,068 - --------------------------------------------------------------------------------------------------------- Receivables and other assets: Investments sold 31,455,426 Interest and dividends 23,922,875 Shares of capital stock sold 3,170,662 Other 248,188 --------------- Total assets 11,216,807,811 - --------------------------------------------------------------------------------------------------------- LIABILITIES - --------------------------------------------------------------------------------------------------------- Return of collateral for securities loaned 35,159,669 - --------------------------------------------------------------------------------------------------------- Payables and other liabilities: Investments purchased 38,768,650 Shares of capital stock redeemed 17,072,256 Distribution and service plan fees 4,337,993 Transfer and shareholder servicing agent fees 1,776,936 Shareholder communications 1,388,003 Directors' compensation 180,682 Other 134,843 --------------- Total liabilities 98,819,032 - --------------------------------------------------------------------------------------------------------- NET ASSETS $11,117,988,779 =============== - --------------------------------------------------------------------------------------------------------- COMPOSITION OF NET ASSETS - --------------------------------------------------------------------------------------------------------- Par value of shares of capital stock $ 2,863,907 - --------------------------------------------------------------------------------------------------------- Additional paid-in capital 8,798,259,296 - --------------------------------------------------------------------------------------------------------- Accumulated net investment income 60,937,269 - --------------------------------------------------------------------------------------------------------- Accumulated net realized gain on investments and foreign currency transactions 87,276,628 - --------------------------------------------------------------------------------------------------------- Net unrealized appreciation on investments and translation of assets and liabilities denominated in foreign currencies 2,168,651,679 --------------- NET ASSETS $11,117,988,779 =============== 32 | OPPENHEIMER MAIN STREET FUND - ---------------------------------------------------------------------------------------------------- NET ASSET VALUE PER SHARE - ---------------------------------------------------------------------------------------------------- Class A Shares: Net asset value and redemption price per share (based on net assets of $7,680,185,754 and 196,331,107 shares of capital stock outstanding) $39.12 Maximum offering price per share (net asset value plus sales charge of 5.75% of offering price) $41.51 - ---------------------------------------------------------------------------------------------------- Class B Shares: Net asset value, redemption price (excludes applicable contingent deferred sales charge) and offering price per share (based on net assets of $1,453,678,953 and 38,382,223 shares of capital stock outstanding) $37.87 - ---------------------------------------------------------------------------------------------------- Class C Shares: Net asset value, redemption price (excludes applicable contingent deferred sales charge) and offering price per share (based on net assets of $1,107,961,412 and 29,299,617 shares of capital stock outstanding) $37.81 - ---------------------------------------------------------------------------------------------------- Class N Shares: Net asset value, redemption price (excludes applicable contingent deferred sales charge) and offering price per share (based on net assets of $207,339,336 and 5,373,522 shares of capital stock outstanding) $38.59 - ---------------------------------------------------------------------------------------------------- Class Y Shares: Net asset value, redemption price and offering price per share (based on net assets of $668,823,324 and 17,004,216 shares of capital stock outstanding) $39.33 SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 33 | OPPENHEIMER MAIN STREET FUND STATEMENT OF OPERATIONS For the Year Ended August 31, 2006 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- INVESTMENT INCOME - -------------------------------------------------------------------------------- Dividends (net of foreign withholding taxes of $126,160) $209,366,981 - -------------------------------------------------------------------------------- Interest 2,782,808 - -------------------------------------------------------------------------------- Other income 402,396 - -------------------------------------------------------------------------------- Portfolio lending fees 240,310 ------------- Total investment income 212,792,495 - -------------------------------------------------------------------------------- EXPENSES - -------------------------------------------------------------------------------- Management fees 52,454,061 - -------------------------------------------------------------------------------- Distribution and service plan fees: Class A 19,214,558 Class B 16,846,996 Class C 11,606,867 Class N 971,045 - -------------------------------------------------------------------------------- Transfer and shareholder servicing agent fees: Class A 15,025,246 Class B 3,525,610 Class C 2,172,783 Class N 493,473 Class Y 145,370 - -------------------------------------------------------------------------------- Shareholder communications: Class A 1,806,216 Class B 711,081 Class C 231,054 Class N 16,585 - -------------------------------------------------------------------------------- Directors' compensation 158,294 - -------------------------------------------------------------------------------- Custodian fees and expenses 87,691 - -------------------------------------------------------------------------------- Administration service fees 1,500 - -------------------------------------------------------------------------------- Other 458,954 ------------- Total expenses 125,927,384 Less reduction to custodian expenses (3,234) ------------- Net expenses 125,924,150 - -------------------------------------------------------------------------------- NET INVESTMENT INCOME 86,868,345 34 | OPPENHEIMER MAIN STREET FUND - ------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) - ------------------------------------------------------------------------------------------- Net realized gain on: Investments $ 884,229,163 Foreign currency transactions 2,757,660 -------------- Net realized gain 886,986,823 - ------------------------------------------------------------------------------------------- Net change in unrealized appreciation (depreciation) on: Investments 20,468,867 Translation of assets and liabilities denominated in foreign currencies (2,030,633) -------------- Net change in unrealized appreciation 18,438,234 - ------------------------------------------------------------------------------------------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS $ 992,293,402 ============== SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 35 | OPPENHEIMER MAIN STREET FUND STATEMENTS OF CHANGES IN NET ASSETS - -------------------------------------------------------------------------------- YEAR ENDED AUGUST 31, 2006 2005 - ---------------------------------------------------------------------------------------------------- OPERATIONS - ---------------------------------------------------------------------------------------------------- Net investment income $ 86,868,345 $ 137,515,097 - ---------------------------------------------------------------------------------------------------- Net realized gain 886,986,823 555,738,759 - ---------------------------------------------------------------------------------------------------- Net change in unrealized appreciation 18,438,234 607,039,907 ------------------------------------ Net increase in net assets resulting from operations 992,293,402 1,300,293,763 - ---------------------------------------------------------------------------------------------------- DIVIDENDS AND/OR DISTRIBUTIONS TO SHAREHOLDERS - ---------------------------------------------------------------------------------------------------- Dividends from net investment income: Class A (78,299,257) (92,759,936) Class B (1,493,470) (6,840,949) Class C (3,049,966) (6,104,306) Class N (1,478,142) (1,600,231) Class Y (7,871,769) (9,431,972) - ---------------------------------------------------------------------------------------------------- CAPITAL STOCK TRANSACTIONS - ---------------------------------------------------------------------------------------------------- Net increase (decrease) in net assets resulting from capital stock transactions: Class A (740,971,280) (330,754,330) Class B (656,284,844) (825,679,905) Class C (189,937,693) (158,653,723) Class N 14,934,343 10,302,309 Class Y 143,274,771 (138,236,214) - ---------------------------------------------------------------------------------------------------- NET ASSETS - ---------------------------------------------------------------------------------------------------- Total decrease (528,883,905) (259,465,494) - ---------------------------------------------------------------------------------------------------- Beginning of period 11,646,872,684 11,906,338,178 ------------------------------------ End of period (including accumulated net investment income of $60,937,269 and $66,534,667, respectively) $11,117,988,779 $11,646,872,684 ==================================== SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 36 | OPPENHEIMER MAIN STREET FUND FINANCIAL HIGHLIGHTS - -------------------------------------------------------------------------------- CLASS A YEAR ENDED AUGUST 31, 2006 2005 2004 2003 2002 - ----------------------------------------------------------------------------------------------------------------------------------- PER SHARE OPERATING DATA - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, beginning of period $ 36.18 $ 32.78 $ 29.62 $ 27.90 $ 32.15 - ----------------------------------------------------------------------------------------------------------------------------------- Income (loss) from investment operations: Net investment income .35 1 .47 1 .26 .22 .16 Net realized and unrealized gain (loss) 2.96 3.34 3.10 1.69 (4.29) ---------------------------------------------------------------------------------- Total from investment operations 3.31 3.81 3.36 1.91 (4.13) - ----------------------------------------------------------------------------------------------------------------------------------- Dividends and/or distributions to shareholders: Dividends from net investment income (.37) (.41) (.20) (.19) (.07) Distributions from net realized gain -- -- -- -- (.05) ---------------------------------------------------------------------------------- Total dividends and/or distributions to shareholders (.37) (.41) (.20) (.19) (.12) - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 39.12 $ 36.18 $ 32.78 $ 29.62 $ 27.90 ================================================================================== - ----------------------------------------------------------------------------------------------------------------------------------- TOTAL RETURN, AT NET ASSET VALUE 2 9.19% 11.68% 11.37% 6.93% (12.90)% - ----------------------------------------------------------------------------------------------------------------------------------- - ----------------------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA - ----------------------------------------------------------------------------------------------------------------------------------- Net assets, end of period (in thousands) $7,680,186 $7,810,714 $7,384,256 $7,033,312 $6,443,983 - ----------------------------------------------------------------------------------------------------------------------------------- Average net assets (in thousands) $7,845,096 $7,759,230 $7,521,103 $6,310,359 $7,203,226 - ----------------------------------------------------------------------------------------------------------------------------------- Ratios to average net assets: 3 Net investment income 0.93% 1.36% 0.75% 0.87% 0.52% Total expenses 0.92% 4 0.92% 4 0.93% 4,5 0.97% 4 0.99% 4 - ----------------------------------------------------------------------------------------------------------------------------------- Portfolio turnover rate 84% 79% 76% 94% 78% 1. Per share amounts calculated based on the average shares outstanding during the period. 2. 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. 3. Annualized for periods of less than one full year. 4. Reduction to custodian expenses less than 0.01%. 5. Voluntary waiver of transfer agent fees less than 0.01%. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 37 | OPPENHEIMER MAIN STREET FUND FINANCIAL HIGHLIGHTS Continued - -------------------------------------------------------------------------------- CLASS B YEAR ENDED AUGUST 31, 2006 2005 2004 2003 2002 - ----------------------------------------------------------------------------------------------------------------------------------- PER SHARE OPERATING DATA - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, beginning of period $ 34.99 $ 31.67 $ 28.68 $ 27.04 $ 31.34 - ----------------------------------------------------------------------------------------------------------------------------------- Income (loss) from investment operations: Net investment income (loss) .05 1 .20 1 (.21) (.13) (.20) Net realized and unrealized gain (loss) 2.86 3.21 3.20 1.77 (4.05) ---------------------------------------------------------------------------------- Total from investment operations 2.91 3.41 2.99 1.64 (4.25) - ----------------------------------------------------------------------------------------------------------------------------------- Dividends and/or distributions to shareholders: Dividends from net investment income (.03) (.09) -- -- -- Distributions from net realized gain -- -- -- -- (.05) ---------------------------------------------------------------------------------- Total dividends and/or distributions to shareholders (.03) (.09) -- -- (.05) - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 37.87 $ 34.99 $ 31.67 $ 28.68 $ 27.04 ================================================================================== - ----------------------------------------------------------------------------------------------------------------------------------- TOTAL RETURN, AT NET ASSET VALUE 2 8.32% 10.79% 10.43% 6.06% (13.58)% - ----------------------------------------------------------------------------------------------------------------------------------- - ----------------------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA - ----------------------------------------------------------------------------------------------------------------------------------- Net assets, end of period (in thousands) $1,453,679 $1,968,829 $2,558,206 $2,941,765 $3,510,800 - ----------------------------------------------------------------------------------------------------------------------------------- Average net assets (in thousands) $1,685,648 $2,295,269 $2,884,434 $2,964,666 $4,607,653 - ----------------------------------------------------------------------------------------------------------------------------------- Ratios to average net assets: 3 Net investment income (loss) 0.13% 0.59% (0.10)% 0.04% (0.25)% Total expenses 1.71% 4 1.72% 4 1.78% 4,5 1.81% 4 1.75% 4 - ----------------------------------------------------------------------------------------------------------------------------------- Portfolio turnover rate 84% 79% 76% 94% 78% 1. Per share amounts calculated based on the average shares outstanding during the period. 2. 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. 3. Annualized for periods of less than one full year. 4. Reduction to custodian expenses less than 0.01%. 5. Voluntary waiver of transfer agent fees less than 0.01%. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 38 | OPPENHEIMER MAIN STREET FUND CLASS C YEAR ENDED AUGUST 31, 2006 2005 2004 2003 2002 - ---------------------------------------------------------------------------------------------------------------------------------- PER SHARE OPERATING DATA - ---------------------------------------------------------------------------------------------------------------------------------- Net asset value, beginning of period $ 34.98 $ 31.71 $ 28.69 $ 27.03 $ 31.33 - ---------------------------------------------------------------------------------------------------------------------------------- Income (loss) from investment operations: Net investment income (loss) .07 1 .21 1 (.03) -- (.11) Net realized and unrealized gain (loss) 2.85 3.22 3.05 1.66 (4.14) --------------------------------------------------------------------------------- Total from investment operations 2.92 3.43 3.02 1.66 (4.25) - ---------------------------------------------------------------------------------------------------------------------------------- Dividends and/or distributions to shareholders: Dividends from net investment income (.09) (.16) -- -- -- Distributions from net realized gain -- -- -- -- (.05) --------------------------------------------------------------------------------- Total dividends and/or distributions to shareholders (.09) (.16) -- -- (.05) - ---------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 37.81 $ 34.98 $ 31.71 $ 28.69 $ 27.03 ================================================================================= - ---------------------------------------------------------------------------------------------------------------------------------- TOTAL RETURN, AT NET ASSET VALUE 2 8.36% 10.83% 10.53% 6.14% (13.58)% - ---------------------------------------------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA - ---------------------------------------------------------------------------------------------------------------------------------- Net assets, end of period (in thousands) $1,107,962 $1,206,335 $1,241,930 $1,188,826 $1,198,517 - ---------------------------------------------------------------------------------------------------------------------------------- Average net assets (in thousands) $1,163,337 $1,250,845 $1,278,659 $1,111,131 $1,432,566 - ---------------------------------------------------------------------------------------------------------------------------------- Ratios to average net assets: 3 Net investment income (loss) 0.18% 0.62% (0.01)% 0.09% (0.24)% Total expenses 1.67% 4 1.67% 4 1.70% 4,5 1.74% 4 1.75% 4 - ---------------------------------------------------------------------------------------------------------------------------------- Portfolio turnover rate 84% 79% 76% 94% 78% 1. Per share amounts calculated based on the average shares outstanding during the period. 2. 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. 3. Annualized for periods of less than one full year. 4. Reduction to custodian expenses less than 0.01%. 5. Voluntary waiver of transfer agent fees less than 0.01%. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 39 | OPPENHEIMER MAIN STREET FUND FINANCIAL HIGHLIGHTS Continued - ------------------------------------------------------------------------------- CLASS N YEAR ENDED AUGUST 31, 2006 2005 2004 2003 2002 - -------------------------------------------------------------------------------------------------------------------- PER SHARE OPERATING DATA - -------------------------------------------------------------------------------------------------------------------- Net asset value, beginning of period $ 35.71 $ 32.39 $ 29.33 $ 27.72 $ 32.09 - -------------------------------------------------------------------------------------------------------------------- Income (loss) from investment operations: Net investment income .24 1 .35 1 .15 .20 .12 Net realized and unrealized gain (loss) 2.92 3.30 3.05 1.65 (4.31) ---------------------------------------------------------------- Total from investment operations 3.16 3.65 3.20 1.85 (4.19) - -------------------------------------------------------------------------------------------------------------------- Dividends and/or distributions to shareholders: Dividends from net investment income (.28) (.33) (.14) (.24) (.13) Distributions from net realized gain -- -- -- -- (.05) ---------------------------------------------------------------- Total dividends and/or distributions to shareholders (.28) (.33) (.14) (.24) (.18) - -------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 38.59 $ 35.71 $ 32.39 $ 29.33 $ 27.72 ================================================================ - -------------------------------------------------------------------------------------------------------------------- TOTAL RETURN, AT NET ASSET VALUE 2 8.87% 11.30% 10.93% 6.78% (13.15)% - -------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA - -------------------------------------------------------------------------------------------------------------------- Net assets, end of period (in thousands) $207,339 $177,463 $150,955 $ 79,188 $ 43,464 - -------------------------------------------------------------------------------------------------------------------- Average net assets (in thousands) $194,639 $168,866 $122,478 $ 60,950 $ 28,141 - -------------------------------------------------------------------------------------------------------------------- Ratios to average net assets: 3 Net investment income 0.63% 1.02% 0.38% 0.65% 0.28% Total expenses 1.22% 1.26% 1.31% 1.23% 1.24% Expenses after payments and waivers and reduction to custodian expenses 1.22% 1.26% 1.31% 1.18% 1.24% - -------------------------------------------------------------------------------------------------------------------- Portfolio turnover rate 84% 79% 76% 94% 78% 1. Per share amounts calculated based on the average shares outstanding during the period. 2. 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. 3. Annualized for periods of less than one full year. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 40 | OPPENHEIMER MAIN STREET FUND CLASS Y YEAR ENDED AUGUST 31, 2006 2005 2004 2003 2002 - -------------------------------------------------------------------------------------------------------------------- PER SHARE OPERATING DATA Net asset value, beginning of period $ 36.38 $ 32.93 $ 29.75 $ 28.02 $ 32.28 - -------------------------------------------------------------------------------------------------------------------- Income (loss) from investment operations: Net investment income .52 1 .64 1 .34 .11 .19 Net realized and unrealized gain (loss) 2.96 3.34 3.13 1.86 (4.28) ---------------------------------------------------------------- Total from investment operations 3.48 3.98 3.47 1.97 (4.09) - -------------------------------------------------------------------------------------------------------------------- Dividends and/or distributions to shareholders: Dividends from net investment income (.53) (.53) (.29) (.24) (.12) Distributions from net realized gain -- -- -- -- (.05) ---------------------------------------------------------------- Total dividends and/or distributions to shareholders (.53) (.53) (.29) (.24) (.17) - -------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $ 39.33 $ 36.38 $ 32.93 $ 29.75 $ 28.02 ================================================================ - -------------------------------------------------------------------------------------------------------------------- TOTAL RETURN, AT NET ASSET VALUE 2 9.63% 12.15% 11.69% 7.11% (12.74)% - -------------------------------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------------------------------- RATIOS/SUPPLEMENTAL DATA - -------------------------------------------------------------------------------------------------------------------- Net assets, end of period (in thousands) $668,823 $483,532 $570,991 $441,460 $225,298 - -------------------------------------------------------------------------------------------------------------------- Average net assets (in thousands) $594,018 $496,349 $558,130 $242,029 $227,835 - -------------------------------------------------------------------------------------------------------------------- Ratios to average net assets: 3 Net investment income 1.38% 1.82% 1.07% 1.01% 0.74% Total expenses 0.49% 0.53% 0.60% 0.87% 0.92% Expenses after payments and waivers and reduction to custodian expenses 0.49% 0.53% 0.60% 0.83% 0.78% - -------------------------------------------------------------------------------------------------------------------- Portfolio turnover rate 84% 79% 76% 94% 78% 1. Per share amounts calculated based on the average shares outstanding during the period. 2. 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. 3. Annualized for periods of less than one full year. SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS. 41 | OPPENHEIMER MAIN STREET FUND NOTES TO FINANCIAL STATEMENTS - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1. SIGNIFICANT ACCOUNTING POLICIES Oppenheimer Main Street Fund (the Fund) is a separate series of Oppenheimer Main Street Funds, Inc., an open-end management investment company registered under the Investment Company Act of 1940, as amended. The Fund's investment objective is to seek a high total return. 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 Directors. 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(R) are valued based on the closing price provided by NASDAQ(R) 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 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 Directors. 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 Directors. 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. Operating expenses directly attributable to a specific class are charged against the operations of that class. 43 | OPPENHEIMER MAIN STREET FUND NOTES TO FINANCIAL STATEMENTS Continued - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1. SIGNIFICANT ACCOUNTING POLICIES Continued 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. The tax components of capital shown in the table below represent distribution requirements the Fund must satisfy under the income tax regulations, losses the Fund may be able to offset against income and gains realized in future years and unrealized appreciation or depreciation of securities and other investments for federal income tax purposes. NET UNREALIZED APPRECIATION BASED ON COST OF SECURITIES AND UNDISTRIBUTED UNDISTRIBUTED ACCUMULATED OTHER INVESTMENTS NET INVESTMENT LONG-TERM LOSS FOR FEDERAL INCOME INCOME GAIN CARRYFORWARD 1,2 TAX PURPOSES -------------------------------------------------------------------------- $61,133,133 $200,536,986 $-- $2,055,391,319 1. During the fiscal year ended August 31, 2006, the Fund utilized $669,602,504 of capital loss carryforward to offset capital gains realized in that fiscal year. a A. Includes $489,935 of capital loss carryforwards acquired in the September 4, 2003 merger of Oppenheimer Trinity Core Fund. 2. During the fiscal year ended August 31, 2005, the Fund utilized $557,605,412 of capital loss carryforward to offset capital gains realized in that fiscal year. b B. Includes $489,935 of capital loss carryforwards acquired in the September 4, 2003 merger of Oppenheimer Trinity Core Fund. 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. Accordingly, the following amounts have been reclassified for August 31, 2006. Net assets of the Fund were unaffected by the reclassifications. REDUCTION TO REDUCTION TO ACCUMULATED ACCUMULATED NET INCREASE TO NET INVESTMENT REALIZED GAIN PAID-IN CAPITAL INCOME ON INVESTMENTS 3 -------------------------------------------------------------------------- $28,913,271 $273,139 $28,640,132 3. $28,423,336, all of which was long-term capital gain, was distributed in connection with Fund share redemptions. The tax character of distributions paid during the years ended August 31, 2006 and August 31, 2005 was as follows: 44 | OPPENHEIMER MAIN STREET FUND YEAR ENDED YEAR ENDED AUGUST 31, 2006 AUGUST 31, 2005 -------------------------------------------------------------------------- Distributions paid from: Ordinary income $92,192,604 $116,737,394 The aggregate cost of securities and other investments and the composition of unrealized appreciation and depreciation of securities and other investments for federal income tax purposes as of August 31, 2006 are noted below. The primary difference between book and tax appreciation or depreciation of securities and other investments, if applicable, is attributable to the tax deferral of losses or tax realization of financial statement unrealized gain or loss. Federal tax cost of securities $9,096,130,273 ============== Gross unrealized appreciation $2,141,287,659 Gross unrealized depreciation (85,896,340) -------------- Net unrealized appreciation $2,055,391,319 ============== - -------------------------------------------------------------------------------- DIRECTORS' COMPENSATION. The Board of Directors has adopted a deferred compensation plan for independent directors that enables directors 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 Director 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 Director. The Fund purchases shares of the funds selected for deferral by the Director 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 directors' 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. - -------------------------------------------------------------------------------- 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 45 | OPPENHEIMER MAIN STREET FUND NOTES TO FINANCIAL STATEMENTS Continued - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1. SIGNIFICANT ACCOUNTING POLICIES Continued 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. Such interest expense and other custodian fees may be paid with these earnings. - -------------------------------------------------------------------------------- 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 CAPITAL STOCK The Fund has authorized 840 million shares of $.01 par value capital stock of each class. Transactions in shares of capital stock were as follows: YEAR ENDED AUGUST 31, 2006 YEAR ENDED AUGUST 31, 2005 SHARES AMOUNT SHARES AMOUNT - ---------------------------------------------------------------------------------------------------- CLASS A Sold 26,624,100 $ 1,007,441,844 42,130,880 $ 1,462,992,163 Dividends and/or distributions reinvested 1,913,771 71,938,634 2,447,641 85,153,420 Redeemed (48,081,986) (1,820,351,758) (53,958,588) (1,878,899,913) --------------------------------------------------------------------- Net decrease (19,544,115) $ (740,971,280) (9,380,067) $ (330,754,330) ===================================================================== - ---------------------------------------------------------------------------------------------------- CLASS B Sold 4,058,713 $ 149,179,170 6,104,800 $ 205,311,660 Dividends and/or distributions reinvested 38,325 1,403,097 186,907 6,324,963 Redeemed (21,981,611) (806,867,111) (30,807,076) (1,037,316,528) --------------------------------------------------------------------- Net decrease (17,884,573) $ (656,284,844) (24,515,369) $ (825,679,905) ===================================================================== 46 | OPPENHEIMER MAIN STREET FUND YEAR ENDED AUGUST 31, 2006 YEAR ENDED AUGUST 31, 2005 SHARES AMOUNT SHARES AMOUNT - ---------------------------------------------------------------------------------------------------- CLASS C Sold 2,576,737 $ 94,490,367 3,496,633 $ 117,639,447 Dividends and/or distributions reinvested 72,361 2,644,058 155,120 5,247,695 Redeemed (7,833,508) (287,072,118) (8,335,048) (281,540,865) --------------------------------------------------------------------- Net decrease (5,184,410) $ (189,937,693) (4,683,295) $ (158,653,723) ===================================================================== - ---------------------------------------------------------------------------------------------------- CLASS N Sold 2,043,767 $ 76,211,483 1,948,358 $ 66,956,350 Dividends and/or distributions reinvested 38,592 1,434,091 45,108 1,553,077 Redeemed (1,677,909) (62,711,231) (1,684,370) (58,207,118) --------------------------------------------------------------------- Net increase 404,450 $ 14,934,343 309,096 $ 10,302,309 ===================================================================== - ---------------------------------------------------------------------------------------------------- CLASS Y Sold 8,687,755 $ 331,059,516 11,089,312 $ 389,600,005 Dividends and/or distributions reinvested 202,236 7,618,220 270,489 9,431,944 Redeemed (5,178,566) (195,402,965) (15,404,677) (537,268,163) --------------------------------------------------------------------- Net increase (decrease) 3,711,425 $ 143,274,771 (4,044,876) $ (138,236,214) ===================================================================== - -------------------------------------------------------------------------------- 3. PURCHASES AND SALES OF SECURITIES The aggregate cost of purchases and proceeds from sales of securities, other than short-term obligations, for the year ended August 31, 2006, were as follows: PURCHASES SALES ------------------------------------------------------------------------ Investment securities $9,544,262,280 $10,940,974,355 - -------------------------------------------------------------------------------- 4. FEES AND OTHER TRANSACTIONS WITH AFFILIATES MANAGEMENT FEES. Management fees paid to the Manager were in accordance with the investment advisory agreement with the Fund which provides for a fee at an average annual rate as shown in the following table: FEE SCHEDULE -------------------------------------------------- Up to $200 million of net assets 0.65% Next $150 million of net assets 0.60 Next $150 million of net assets 0.55 Over $500 million of net assets 0.45 - -------------------------------------------------------------------------------- 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 year ended August 31, 2006, the Fund paid $21,576,257 to OFS for services to the Fund. 47 | OPPENHEIMER MAIN STREET FUND NOTES TO FINANCIAL STATEMENTS Continued - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 4. FEES AND OTHER TRANSACTIONS WITH AFFILIATES Continued 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 periods. 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 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 Directors and its independent directors 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 August 31, 2006 for Class B, Class C and Class N shares were $25,080,059, $33,510,768 and $3,136,495, 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 following table for the period indicated. 48 | OPPENHEIMER MAIN STREET FUND CLASS A CLASS B CLASS C CLASS N CLASS A CONTINGENT CONTINGENT CONTINGENT CONTINGENT FRONT-END DEFERRED DEFERRED DEFERRED DEFERRED SALES CHARGES SALES CHARGES SALES CHARGES SALES CHARGES SALES CHARGES RETAINED BY RETAINED BY RETAINED BY RETAINED BY RETAINED BY YEAR ENDED DISTRIBUTOR DISTRIBUTOR DISTRIBUTOR DISTRIBUTOR DISTRIBUTOR - ------------------------------------------------------------------------------------------------------ August 31, 2006 $2,227,854 $48,214 $3,727,258 $107,245 $68,399 - -------------------------------------------------------------------------------- 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 August 31, 2006, the Fund had no outstanding foreign currency contracts. - -------------------------------------------------------------------------------- 6. ILLIQUID SECURITIES As of August 31, 2006, investments in securities included issues that are illiquid. A security may 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 securities. Securities that are illiquid are marked with the applicable footnote on the Statement of Investments. - -------------------------------------------------------------------------------- 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 securities, letters of credit 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 49 | OPPENHEIMER MAIN STREET FUND NOTES TO FINANCIAL STATEMENTS Continued - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 7. SECURITIES LENDING Continued of the loaned securities is determined at the close of business each day. If the Fund is undercollateralized at the close of business due to an increase in market value of securities on loan, additional collateral is requested from the borrowing counterparty and is delivered to the Fund on the next business day. Cash collateral may be invested in approved investments and the Fund bears the risk of any loss in value of these investments. The Fund retains a portion of the interest earned from the collateral. 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. 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 August 31, 2006, the Fund had on loan securities valued at $35,274,309, which are included in the Statement of Assets and Liabilities as "Investments, at value" and, when applicable, as "Investments sold." Collateral of $35,159,669 was received for the loans, all of which was received in cash and subsequently invested in approved investments or held as cash. - -------------------------------------------------------------------------------- 8. RECENT ACCOUNTING PRONOUNCEMENT In June 2006, the Financial Accounting Standards Board ("FASB") issued FASB Interpretation No. 48 ("FIN 48"), ACCOUNTING FOR UNCERTAINTY IN INCOME TAXES. FIN 48 clarifies the accounting for uncertainty in income taxes recognized in an enterprise's financial statements in accordance with FASB Statement No. 109, ACCOUNTING FOR INCOME TAXES. FIN 48 requires the evaluation of tax positions taken in the course of preparing the Fund's tax returns to determine whether it is "more-likely-than-not" that tax positions taken in the Fund's tax return will be ultimately sustained. A tax liability and expense must be recorded in respect of any tax position that, in Management's judgment, will not be fully realized. FIN 48 is effective for fiscal years beginning after December 15, 2006. As of August 31, 2006, the Manager is evaluating the implications of FIN 48. Its impact in the Fund's financial statements has not yet been determined. - -------------------------------------------------------------------------------- 9. LITIGATION A consolidated amended complaint was filed as a putative class action against the Manager and the Transfer Agent and other defendants (including 51 of the Oppenheimer funds including the Fund) in the U.S. District Court for the Southern District of New York on January 10, 2005 and was amended on March 4, 2005. The complaint alleged, among other things, that the Manager charged excessive fees for distribution and other costs, and that by permitting and/or participating in those actions, the Directors/Trustees and the Officers of the funds breached their fiduciary duties to fund shareholders under the Investment Company Act of 1940 and at common law. The plaintiffs sought unspecified damages, an accounting of all fees paid, and an award of attorneys' fees and litigation expenses. 50 | OPPENHEIMER MAIN STREET FUND In response to the defendants' motions to dismiss the suit, seven of the eight counts in the complaint, including the claims against certain of the Oppenheimer funds, 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, by court order dated March 10, 2006, and the remaining count against the Manager and the Transfer Agent was dismissed with prejudice by court order dated April 5, 2006. The plaintiffs filed an appeal of those dismissals on May 11, 2006. The Manager believes that the allegations contained in the complaint are without merit and that there are substantial grounds to sustain the district court's rulings. The Manager also believes that it is premature to render any opinion as to the likelihood of an outcome unfavorable to it, the funds, the Directors/Trustees or the Officers on the appeal of the decisions of the district court, and that no estimate can yet be made with any degree of certainty as to the amount or range of any potential loss. 51 | OPPENHEIMER MAIN STREET FUND REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- TO THE BOARD OF DIRECTORS AND SHAREHOLDERS OF OPPENHEIMER MAIN STREET FUND: We have audited the accompanying statement of assets and liabilities of Oppenheimer Main Street Fund, a series of Oppenheimer Main Street Funds, Inc., including the statement of investments, as of August 31, 2006, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended. These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audit includes consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of August 31, 2006, by correspondence with the custodian and brokers; where replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of Oppenheimer Main Street Fund as of August 31, 2006, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America. DELOITTE & TOUCHE LLP Denver, Colorado October 16, 2006 52 | OPPENHEIMER MAIN STREET FUND FEDERAL INCOME TAX INFORMATION Unaudited - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- In early 2007, if applicable, shareholders of record will receive information regarding all dividends and distributions paid to them by the Fund during calendar year 2006. Regulations of the U.S. Treasury Department require the Fund to report this information to the Internal Revenue Service. Dividends, if any, paid by the Fund during the fiscal year ended August 31, 2006 which are not designated as capital gain distributions should be multiplied by 100% to arrive at the amount eligible for the corporate dividend-received deduction. A portion, if any, of the dividends paid by the Fund during the fiscal year ended August 31, 2006 which are not designated as capital gain distributions are eligible for lower individual income tax rates to the extent that the Fund has received qualified dividend income as stipulated by recent tax legislation. $199,497,525 of the Fund's fiscal year taxable income may be eligible for the lower individual income tax rates. In early 2007, shareholders of record will receive information regarding the percentage of distributions that are eligible for lower individual income tax rates. Recent tax legislation allows a regulated investment company to designate distributions not designated as capital gain distributions, as either interest related dividends or short-term capital gain dividends, both of which are exempt from the U.S. withholding tax applicable to non U.S. taxpayers. For the fiscal year ended August 31, 2006, $1,136,343 or 1.23% of the ordinary distributions paid by the Fund qualifies as an interest related dividend. The foregoing information is presented to assist shareholders in reporting distributions received from the Fund to the Internal Revenue Service. Because of the complexity of the federal regulations which may affect your individual tax return and the many variations in state and local tax regulations, we recommend that you consult your tax advisor for specific guidance. 53 | OPPENHEIMER MAIN STREET 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. 54 | OPPENHEIMER MAIN STREET FUND DIRECTORS AND OFFICERS Unaudited - -------------------------------------------------------------------------------- - ----------------------------------------------------------------------------------------------------------------------------- NAME, POSITION(S) HELD WITH THE PRINCIPAL OCCUPATION(S) DURING THE PAST 5 YEARS; OTHER TRUSTEESHIPS/DIRECTORSHIPS FUND, LENGTH OF SERVICE, AGE HELD; NUMBER OF PORTFOLIOS IN THE FUND COMPLEX CURRENTLY OVERSEEN INDEPENDENT THE ADDRESS OF EACH DIRECTOR IN THE CHART BELOW IS 6803 S. TUCSON WAY, CENTENNIAL, DIRECTORS COLORADO 80112-3924. EACH DIRECTOR SERVES FOR AN INDEFINITE TERM, OR UNTIL HIS OR HER RESIGNATION, RETIREMENT, DEATH OR REMOVAL. WILLIAM L. ARMSTRONG, President, Colorado Christian University (since 2006); Chairman of the follow- Chairman of the Board ing private mortgage banking companies: Cherry Creek Mortgage Company of Directors (since 2003), (since 1991), Centennial State Mortgage Company (since 1994), and The El Director (since 2001) Paso Mortgage Company (since 1993); Chairman of the following private Age: 69 companies: Ambassador Media Corporation (since 1984) and Broadway Ventures (since 1984); Director of the following: Helmerich & Payne, Inc. (oil and gas drilling/production company) (since 1992), Campus Crusade for Christ (since 1991) and The Lynde and Harry Bradley Foundation, Inc. (non-profit organization) (since 2002); former Chairman of the following: Transland Financial Services, Inc. (private mortgage banking company) (1997-2003), Great Frontier Insurance (insurance agency) (1995-2000), Frontier Real Estate, Inc. (residential real estate brokerage) (1994-2000) and Frontier Title (title insur- ance agency) (1995-2000); former Director of the following: UNUMProvident (insurance company) (1991-2004), Storage Technology Corporation (computer equipment company) (1991-2003) and International Family Entertainment (television channel) (1992-1997); U.S. Senator (January 1979-January 1991). Oversees 38 portfolios in the OppenheimerFunds complex. ROBERT G. AVIS, Director and President of A.G. Edwards Capital, Inc. (General Partner of private Director (since 1993) equity funds) (until February 2001); Chairman, President and Chief Executive Age: 75 Officer of A.G. Edwards Capital, Inc. (until March 2000); Director of A.G. Edwards & Sons, Inc. (brokerage company) (until 2000) and A.G. Edwards Trust Company (investment adviser) (until 2000); Vice Chairman and Director of A.G. Edwards, Inc. (until March 1999); Vice Chairman of A.G. Edwards & Sons, Inc. (until March 1999); Chairman of A.G. Edwards Trust Company (until March 1999) and A.G.E. Asset Management (investment adviser) (until March 1999). Oversees 38 portfo- lios in the OppenheimerFunds complex. GEORGE C. BOWEN, Assistant Secretary and Director of Centennial Asset Management Corporation Director (since 1998) (December 1991-April 1999); President, Treasurer and Director of Centennial Age: 70 Capital Corporation (June 1989-April 1999); Chief Executive Officer and Director of MultiSource Services, Inc. (March 1996-April 1999); Mr. Bowen held several positions with the Manager and with subsidiary or affiliated companies of the Manager (September 1987-April 1999). Oversees 38 portfolios in the OppenheimerFunds complex. EDWARD L. CAMERON, Member of The Life Guard of Mount Vernon (George Washington historical Director (since 2001) site) (since June 2000); Director of Genetic ID, Inc. (biotech company) (March Age: 68 2001-May 2002); Partner at PricewaterhouseCoopers LLP (accounting firm) (July 1974-June 1999); Chairman of Price Waterhouse LLP Global Investment Management Industry Services Group (accounting firm) (July 1994-June 1998). Oversees 38 portfolios in the OppenheimerFunds complex. JON S. FOSSEL, Director of UNUMProvident (insurance company) (since June 2002); Director of Director (since 1990) Northwestern Energy Corp. (public utility corporation) (since November 2004); Age: 64 Director of P.R. Pharmaceuticals (October 1999-October 2003); Director of Rocky Mountain Elk Foundation (non-profit organization) (February 1998-February 2003 and since February 2005); Chairman and Director (until October 1996) and President and Chief Executive Officer (until October 1995) of the Manager; 55 | OPPENHEIMER MAIN STREET FUND DIRECTORS AND OFFICERS Unaudited / Continued - -------------------------------------------------------------------------------- JON S. FOSSEL, Continued President, Chief Executive Officer and Director of the following: Oppenheimer Acquisition Corp. ("OAC") (parent holding company of the Manager), Shareholders Services, Inc. and Shareholder Financial Services, Inc. (until October 1995). Oversees 38 portfolios in the OppenheimerFunds complex. SAM FREEDMAN, Director of Colorado UpLIFT (charitable organization) (since September 1984). Director (since 1996) Mr. Freedman held several positions with the Manager and with subsidiary or Age: 66 affiliated companies of the Manager (until October 1994). Oversees 38 portfo- lios in the OppenheimerFunds complex. BEVERLY L. HAMILTON, Trustee of Monterey Institute for International Studies (educational organization) Director (since 2002) (since February 2000); Board Member of Middlebury College (educational orga- Age: 60 nization) (since December 2005); Director of The California Endowment (philanthropic organization) (since April 2002); Director (February 2002-2005) and Chairman of Trustees (since 2006) of the Community Hospital of Monterey Peninsula; Director (October 1991-2005) and Vice Chairman (since 2006) of American Funds' Emerging Markets Growth Fund, Inc. (mutual fund); President of ARCO Investment Management Company (February 1991-April 2000); Member of the investment committees of The Rockefeller Foundation (since 2001) and The University of Michigan (since 2000); Advisor at Credit Suisse First Boston's Sprout venture capital unit (venture capital fund) (1994-January 2005); Trustee of MassMutual Institutional Funds (investment company) (1996-June 2004); Trustee of MML Series Investment Fund (investment company) (April 1989-June 2004); Member of the investment committee of Hartford Hospital (2000-2003); and Advisor to Unilever (Holland) pension fund (2000-2003). Oversees 38 portfolios in the OppenheimerFunds complex. ROBERT J. MALONE, Director of Jones International University (educational organization) (since Director (since 2002) August 2005); Chairman, Chief Executive Officer and Director of Steele Street Age: 62 State Bank (commercial banking) (since August 2003); Director of Colorado UpLIFT (charitable organization) (since 1986); Trustee of the Gallagher Family Foundation (non-profit organization) (since 2000); Former Chairman of U.S. Bank-Colorado (subsidiary of U.S. Bancorp and formerly Colorado National Bank) (July 1996-April 1999); Director of Commercial Assets, Inc. (real estate investment trust) (1993-2000); Director of Jones Knowledge, Inc. (2001-July 2004); and Director of U.S. Exploration, Inc. (oil and gas exploration) (1997- February 2004). Oversees 38 portfolios in the OppenheimerFunds complex. F. WILLIAM MARSHALL, JR., Trustee of MassMutual Select Funds (formerly MassMutual Institutional Funds) Director (since 2001) (investment company) (since 1996) and MML Series Investment Fund (invest- Age: 64 ment company) (since 1996); Trustee (since 1987) and Chairman (1994-2005) of the Investment Committee of the Worcester Polytech Institute (private univer- sity); President and Treasurer of the SIS Funds (private charitable fund) (since January 1999); Chairman of SIS & Family Bank, F.S.B. (formerly SIS Bank) (com- mercial bank) (January 1999-July 1999); and Executive Vice President of Peoples Heritage Financial Group, Inc. (commercial bank) (January 1999-July 1999). Oversees 40 portfolios in the OppenheimerFunds complex. - ----------------------------------------------------------------------------------------------------------------------------- INTERESTED DIRECTOR THE ADDRESS OF MR. MURPHY IS TWO WORLD FINANCIAL CENTER, 225 LIBERTY STREET, 11TH AND OFFICER FLOOR, NEW YORK, NEW YORK 10281-1008. MR. MURPHY SERVES AS A DIRECTOR FOR AN INDEFINITE TERM, OR UNTIL HIS RESIGNATION, RETIREMENT, DEATH OR REMOVAL AND AS AN OFFI- CER FOR AN INDEFINITE TERM, OR UNTIL HIS RESIGNATION, RETIREMENT, DEATH OR REMOVAL. MR. MURPHY IS AN INTERESTED DIRECTOR DUE TO HIS POSITIONS WITH OPPENHEIMERFUNDS, INC. AND ITS AFFILIATES. 56 | OPPENHEIMER MAIN STREET FUND JOHN V. MURPHY, Chairman, Chief Executive Officer and Director (since June 2001) and President Director, President and (since September 2000) of the Manager; President and director or trustee of Principal Executive Officer other Oppenheimer funds; President and Director of OAC and of Oppenheimer (since 2001) Partnership Holdings, Inc. (holding company subsidiary of the Manager) (since Age: 57 July 2001); Director of OppenheimerFunds Distributor, Inc. (subsidiary of the Manager) (since November 2001); Chairman and Director of Shareholder Services, Inc. and of Shareholder Financial Services, Inc. (transfer agent sub- sidiaries of the Manager) (since July 2001); President and Director of OppenheimerFunds Legacy Program (charitable trust program established by the Manager) (since July 2001); Director of the following investment advisory subsidiaries of the Manager: OFI Institutional Asset Management, Inc., Centennial Asset Management Corporation, Trinity Investment Management Corporation and Tremont Capital Management, Inc. (since November 2001), HarbourView Asset Management Corporation and OFI Private Investments, Inc. (since July 2001); President (since November 2001) and Director (since July 2001) of Oppenheimer Real Asset Management, Inc.; Executive Vice President of Massachusetts Mutual Life Insurance Company (OAC's parent company) (since February 1997); Director of DLB Acquisition Corporation (holding company par- ent of Babson Capital Management LLC) (since June 1995); Member of the Investment Company Institute's Board of Governors (since October 3, 2003); Chief Operating Officer of the Manager (September 2000-June 2001); President and Trustee of MML Series Investment Fund and MassMutual Select Funds (open-end investment companies) (November 1999-November 2001); Director of C.M. Life Insurance Company (September 1999-August 2000); President, Chief Executive Officer and Director of MML Bay State Life Insurance Company (September 1999-August 2000); Director of Emerald Isle Bancorp and Hibernia Savings Bank (wholly-owned subsidiary of Emerald Isle Bancorp) (June 1989-June 1998). Oversees 91 portfolios in the OppenheimerFunds complex. - ----------------------------------------------------------------------------------------------------------------------------- OTHER OFFICERS THE ADDRESSES OF THE OFFICERS IN THE CHART BELOW ARE AS FOLLOWS: FOR MESSRS. OF THE FUND MONOYIOS, REINGANUM, ZACK, GILLESPIE AND MS. BLOOMBERG, TWO WORLD FINANCIAL CENTER, 225 LIBERTY STREET, NEW YORK, NEW YORK 10281-1008, FOR MESSRS. VANDEHEY, WIXTED, PETERSEN, SZILAGYI AND MS. IVES, 6803 S. TUCSON WAY, CENTENNIAL, COLORADO 80112-3924. EACH OFFICER SERVES FOR AN INDEFINITE TERM OR UNTIL HIS OR HER RESIGNATION, RETIREMENT, DEATH OR REMOVAL. NIKOLAOS D. MONOYIOS, Vice President (since 2000) Senior Vice President of the Manager (since July 2004); a Certified Financial Age: 57 Analyst. Formerly Vice President of the Manager (April 1998-July 2004). An offi- cer of 14 portfolios in the OppenheimerFunds complex. DR. MARC REINGANUM, Vice President (since 2003) Vice President of the Manager (since September 2002); a Director of Age: 53 Quantitative Research and Portfolio Strategist for Equities. Formerly the Mary Jo Vaughn Rauscher Chair in Financial Investments at Southern Methodist University since 1995. At Southern Methodist University he also served as the Director of the Finance Institute, Chairman of the Finance Department, President of the Faculty at the Cox School of Business and member of the Board of Trustee Investment Committee. An officer of 8 portfolios in the OppenheimerFunds complex. 57 | OPPENHEIMER MAIN STREET FUND DIRECTORS AND OFFICERS Unaudited / Continued - -------------------------------------------------------------------------------- MARK S. VANDEHEY, Senior Vice President and Chief Compliance Officer of the Manager (since Vice President and Chief March 2004); Vice President of OppenheimerFunds Distributor, Inc., Centennial Compliance Officer Asset Management Corporation and Shareholder Services, Inc. (since June 1983); (since 2004) Vice President and Director of Internal Audit of the Manager (1997-February Age: 56 2004). An officer of 91 portfolios in the OppenheimerFunds complex. BRIAN W. WIXTED, Senior Vice President and Treasurer of the Manager (since March 1999); Treasurer and Principal Treasurer of the following: HarbourView Asset Management Corporation, Financial and Accounting Shareholder Financial Services, Inc., Shareholder Services, Inc., Oppenheimer Real Officer (since 1999) Asset Management Corporation, and Oppenheimer Partnership Holdings, Inc. Age: 47 (since March 1999), OFI Private Investments, Inc. (since March 2000), OppenheimerFunds International Ltd. and OppenheimerFunds plc (since May 2000), OFI Institutional Asset Management, Inc. (since November 2000), and OppenheimerFunds Legacy Program (since June 2003); Treasurer and Chief Financial Officer of OFI Trust Company (trust company subsidiary of the Manager) (since May 2000); Assistant Treasurer of the following: OAC (since March 1999), Centennial Asset Management Corporation (March 1999-October 2003) and OppenheimerFunds Legacy Program (April 2000-June 2003); Principal and Chief Operating Officer of Bankers Trust Company-Mutual Fund Services Division (March 1995-March 1999). An officer of 91 portfolios in the OppenheimerFunds complex. BRIAN S. PETERSEN, Assistant Vice President of the Manager (since August 2002); Manager/Financial Assistant Treasurer Product Accounting of the Manager (November 1998-July 2002). An officer of (since 2004) 91 portfolios in the OppenheimerFunds complex. Age: 36 BRIAN C. SZILAGYI, Assistant Vice President of the Manager (since July 2004); Director of Financial Assistant Treasurer Reporting and Compliance of First Data Corporation (April 2003-July 2004); (since 2005) Manager of Compliance of Berger Financial Group LLC (May 2001-March 2003); Age: 36 Director of Mutual Fund Operations at American Data Services, Inc. (September 2000-May 2001). An officer of 91 portfolios in the OppenheimerFunds complex. ROBERT G. ZACK, Executive Vice President (since January 2004) and General Counsel (since March Vice President and Secretary 2002) of the Manager; General Counsel and Director of the Distributor (since (since 2001) December 2001); General Counsel of Centennial Asset Management Corporation Age: 58 (since December 2001); Senior Vice President and General Counsel of HarbourView Asset Management Corporation (since December 2001); Secretary and General Counsel of OAC (since November 2001); Assistant Secretary (since September 1997) and Director (since November 2001) of OppenheimerFunds International Ltd. and OppenheimerFunds plc; Vice President and Director of Oppenheimer Partnership Holdings, Inc. (since December 2002); Director of Oppenheimer Real Asset Management, Inc. (since November 2001); Senior Vice President, General Counsel and Director of Shareholder Financial Services, Inc. and Shareholder Services, Inc. (since December 2001); Senior Vice President, General Counsel and Director of OFI Private Investments, Inc. and OFI Trust Company (since November 2001); Vice President of OppenheimerFunds Legacy Program (since June 2003); Senior Vice President and General Counsel of OFI Institutional Asset Management, Inc. (since November 2001); Director of OppenheimerFunds (Asia) Limited (since December 2003); Senior Vice President (May 1985- December 2003), Acting General Counsel (November 2001-February 2002) and Associate General Counsel (May 1981-October 2001) of the Manager; Assistant Secretary of the following: Shareholder Services, Inc. (May 1985-November 2001), Shareholder Financial Services, Inc. (November 1989-November 2001), and OppenheimerFunds International Ltd. (September 1997-November 2001). An offi- cer of 91 portfolios in the OppenheimerFunds complex. 58 | OPPENHEIMER MAIN STREET FUND LISA I. BLOOMBERG, Vice President and Associate Counsel of the Manager (since May 2004); First Assistant Secretary Vice President (April 2001-April 2004), Associate General Counsel (December (since 2004) 2000-April 2004), Corporate Vice President (May 1999-April 2001) and Assistant Age: 38 General Counsel (May 1999-December 2000) of UBS Financial Services Inc. (for- merly, PaineWebber Incorporated). An officer of 91 portfolios in the OppenheimerFunds complex. KATHLEEN T. IVES, Vice President (since June 1998) and Senior Counsel and Assistant Secretary Assistant Secretary (since October 2003) of the Manager; Vice President (since 1999) and (since 2001) Assistant Secretary (since October 2003) of the Distributor; Assistant Secretary Age: 40 of Centennial Asset Management Corporation (since October 2003); Vice President and Assistant Secretary of Shareholder Services, Inc. (since 1999); Assistant Secretary of OppenheimerFunds Legacy Program and Shareholder Financial Services, Inc. (since December 2001); Assistant Counsel of the Manager (August 1994-October 2003). An officer of 91 portfolios in the OppenheimerFunds complex. PHILLIP S. GILLESPIE, Senior Vice President and Deputy General Counsel of the Manager (since Assistant Secretary September 2004); First Vice President (2000-September 2004), Director (2000- (since 2004) September 2004) and Vice President (1998-2000) of Merrill Lynch Investment Age: 42 Management. An officer of 91 portfolios in the OppenheimerFunds complex. THE FUND'S STATEMENT OF ADDITIONAL INFORMATION CONTAINS ADDITIONAL INFORMATION ABOUT THE FUND'S DIRECTORS AND OFFICERS AND IS AVAILABLE WITHOUT CHARGE UPON REQUEST, BY CALLING 1.800.525.7048. 59 | OPPENHEIMER MAIN STREET FUND ITEM 2. CODE OF ETHICS. The registrant has adopted a code of ethics that applies to the registrant's principal executive officer, principal financial officer, principal accounting officer or controller or persons performing similar functions. ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. The Board of Directors of the registrant has determined that Edward L. Cameron, the Chairman of the Board's Audit Committee, and George C. Bowen, a member of the Board's Audit Committee, are audit committee financial experts and that Messrs. Cameron and Bowen are "independent" for purposes of this Item 3. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. (a) Audit Fees The principal accountant for the audit of the registrant's annual financial statements billed $72,500 in fiscal 2006 and $70,000 in fiscal 2005. (b) Audit-Related Fees The principal accountant for the audit of the registrant's annual financial statements billed no such fees during the last two fiscal years. The principal accountant for the audit of the registrant's annual financial statements billed no such fees in fiscal 2006 and $5,000 in fiscal 2005 to the registrant's investment adviser or any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant. Such services include: seed money audit. (c) Tax Fees The principal accountant for the audit of the registrant's annual financial statements billed no such fees to the registrant during the last two fiscal years. The principal accountant for the audit of the registrant's annual financial statements billed no such fees during the last two fiscal years to the registrant's investment adviser or any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant. (d) All Other Fees The principal accountant for the audit of the registrant's annual financial statements billed $32,666 in fiscal 2006 and no such fees in fiscal 2005 to the registrant. The principal accountant for the audit of the registrant's annual financial statements billed $2,625 in fiscal 2006 and no such fees in 2005 to the registrant's investment adviser or any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant. Such fees would include the cost to the principal accountant of attending audit committee meetings and consultations regarding the registrant's retirement plan with respect to its trustees. (e) (1) During its regularly scheduled periodic meetings, the registrant's audit committee will pre-approve all audit, audit-related, tax and other services to be provided by the principal accountants of the registrant. The audit committee has delegated pre-approval authority to its Chairman for any subsequent new engagements that arise between regularly scheduled meeting dates provided that any fees such pre-approved are presented to the audit committee at its next regularly scheduled meeting. Under applicable laws, pre-approval of non-audit services maybe waived provided that: 1) the aggregate amount of all such services provided constitutes no more than five percent of the total amount of fees paid by the registrant to it principal accountant during the fiscal year in which services are provided 2) such services were not recognized by the registrant at the time of engagement as non-audit services and 3) such services are promptly brought to the attention of the audit committee of the registrant and approved prior to the completion of the audit. (2) 100% (f) Not applicable as less than 50%. (g) The principal accountant for the audit of the registrant's annual financial statements billed $35,291 in fiscal 2006 and $5,000 in fiscal 2005 to the registrant and the registrant's investment adviser or any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant related to non-audit fees. Those billings did not include any prohibited non-audit services as defined by the Securities Exchange Act of 1934. (h) The registrant's audit committee of the board of trustees has considered whether the provision of non-audit services that were rendered to the registrant's investment adviser, and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of Rule 2-01 of Regulation S-X is compatible with maintaining the principal accountant's independence. 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 08/31/2006, 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) Exhibit attached hereto. (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 Funds, Inc. By: /S/ John V. Murphy --------------------------- John V. Murphy Principal Executive Officer Date: 10/16/2006 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: 10/16/2006 By: /S/ Brian W. Wixted --------------------------- Brian W. Wixted Principal Financial Officer Date: 10/16/2006