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 811-21281

                      OPPENHEIMER PRINCIPAL PROTECTED TRUST
               (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
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OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND PORTFOLIO ALLOCATION

  [THE FOLLOWING TABLE WAS REPRESENTED BY A PIE CHART IN THE PRINTED MATERIAL.]

Equity             99.1%
Cash Equivalents    0.9

The Fund seeks exposure to the equity markets by investing in the Oppenheimer
Main Street Fund. Information relating to the Oppenheimer Main Street Fund's
portfolio holdings appears below.

Portfolio holdings and allocations are subject to change. Percentages are as of
August 31, 2006, and are based on the total market value of investments.
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OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND) SECTOR ALLOCATION
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Financials                                                                 23.2%
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Information Technology                                                     15.9
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Industrials                                                                13.3
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Energy                                                                     12.7
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Health Care                                                                12.2
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Consumer Staples                                                            8.2
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Consumer Discretionary                                                      7.8
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Materials                                                                   2.7
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Telecommunication Services                                                  2.6
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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.
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              10 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
TOP TEN COMMON STOCK INDUSTRIES
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Oil & Gas                                                                  12.0%
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Diversified Financial Services                                              6.5
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Pharmaceuticals                                                             5.7
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Insurance                                                                   5.4
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Commercial Banks                                                            4.9
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Capital Markets                                                             4.8
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Health Care Providers & Services                                            4.7
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Computers & Peripherals                                                     4.0
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Industrial Conglomerates                                                    3.9
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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.

OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
TOP TEN COMMON STOCK HOLDINGS
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Exxon Mobil Corp.                                                           3.8%
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General Electric Co.                                                        2.7
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Bank of America Corp.                                                       2.4
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Citigroup, Inc.                                                             2.3
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Microsoft Corp.                                                             2.0
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Chevron Corp.                                                               1.6
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Johnson & Johnson                                                           1.6
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JPMorgan Chase & Co.                                                        1.6
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Altria Group, Inc.                                                          1.5
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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.
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              11 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



FUND PERFORMANCE DISCUSSION
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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 THE S&P 500 INDEX.

MANAGEMENT DISCUSSION OF FUND PERFORMANCE. For the 12-month period ended August
31, 2006, Oppenheimer Principal Protected Main Street Fund's Class A shares
(without sales charge) produced a total return of 7.67%, which was below the S&P
500 Index's total return of 8.87%. During periods of rising stock markets,
principal protected funds tend to lag behind pure stock market indices, because
they typically have less than 100% of their net assets invested in the equity
markets. The Fund's main goal is not to chase absolute returns, but to preserve
investor's capital, while staying competitive with its peers.

     The equity component of the Fund's portfolio is invested in Class Y shares
of Oppenheimer Main Street Fund. The fixed income component is normally invested
primarily in Treasury STRIPS that mature on or around the end of the seven-year
Warranty Period.5 The asset allocation of the Oppenheimer Principal Protected
Main Street Fund will shift over time based on market factors such as interest
rates, stock market performance and certain volatility measures. Additionally,
there is a pre-defined algorithm that dictates the maximum percentage the Fund
can invest in equity securities. This algorithm is based in part on current
stock weightings and changes in the market environment (including interest
rates, stock market performance and volatility).

     OppenheimerFunds' risk management team monitors the Fund's asset allocation
and keeps the Fund's equity percentage dynamically set, depending on market
conditions. In an up stock market, the Fund will normally buy shares of
Oppenheimer Main Street Fund to take advantage of stock market growth potential.
While in a down market, the Fund will normally sell shares of Oppenheimer Main
Street Fund and buy Treasury STRIPS to attempt to cushion the Fund's share price
from potential declines in stock prices. In the sideways market, the algorithm
allows the Fund "to stay still" in order to avoid unnecessary trading costs.

OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND MAY NOT BE SUITABLE FOR
INVESTORS WHO NEED TO REDEEM SHARES PRIOR TO MATURITY, OR WHO NEED TO RECEIVE
DIVIDENDS IN CASH.

5. The Fund may invest a significant portion of assets in Treasury STRIPS, which
are sold at a discount and accrue to par value at maturity. For taxable income
purposes the discount on these treasury strips is amortized into income daily
using a level yield method over the holding period of the security, thus
investors will have taxable income.


              12 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



FUND PERFORMANCE DISCUSSION
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     As of August 31, 2006, 99.6% of the Fund's net assets were invested in the
equity component (through Oppenheimer Main Street Fund's Class Y shares). For
the 12-month period ended August 31, 2006, the Fund's equity component, the
Class Y shares of Oppenheimer Main Street Fund, 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. 6 We attribute Oppenheimer Main Street Fund's strong relative
performance mainly to the success of its management team's security selection
strategy. The management team's sector allocation strategy made more modest
contributions to relative performance, while its 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
Oppenheimer Main Street Fund's performance at different times during the period.
For example, the management team's security selection strategy provided stronger
contributions during the reporting period's first nine months, but its 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 the management team's 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, Oppenheimer Main Street Fund received
positive contributions to its relative performance from eight of the ten
economic sectors represented in the S&P 500 Index. The energy area produced
particularly strong results, primarily as a result of the management team's
decision to allocate a relatively heavy exposure to the sector. In addition, the
management team's 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, Oppenheimer Main Street 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 an underweighted position, preventing Oppenheimer
Main Street Fund from participating fully in the sector's rebound from
pronounced weakness in earlier reporting periods. Although stock selection was
good in information technology, the Fund's overweighted position in this weak
sector had a small negative impact on relative performance.

OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND MAY NOT BE SUITABLE FOR
INVESTORS WHO NEED TO REDEEM SHARES PRIOR TO MATURITY, OR WHO NEED TO RECEIVE
DIVIDENDS IN CASH.

6. The Lipper Large-Cap Category Average produced total returns of 7.12% for the
12 months ending August 31, 2006.


              13 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



FUND PERFORMANCE DISCUSSION
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     Finally, Oppenheimer Main Street Fund's risk management disciplines
continued to work well. For example, as of the end of the reporting period,
Oppenheimer Main Street Fund was diversified across approximately 426 individual
stocks representing all of the economic sectors in the S&P 500 Index. No stock
held by Oppenheimer Main Street Fund is overweighted by more than 0.52% or
underweighted by more than 0.78% relative to the S&P 500 Index benchmark. As a
result, the performance of Oppenheimer Main Street Fund is not dependent on
making large, risky bets on individual stocks but on the effectiveness of its
disciplined quantitative models and its active market cap allocation strategies.

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. Performance is measured from inception of the
classes on June 2, 2003. 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.


              14 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



CLASS A SHARES

COMPARISON OF CHANGE IN VALUE OF $10,000 HYPOTHETICAL INVESTMENTS IN:

   Oppenheimer Principal Protected Main Street Fund (Class A)
   S&P 500 Index

 [THE FOLLOWING TABLE WAS REPRESENTED BY A LINE GRAPH IN THE PRINTED MATERIAL.]

                  Oppenheimer
                   Principal
             Protected Main Street   S&P 500
                Fund (Class A)        Index

06/02/2003            9,425           10,000
08/31/2003            9,689           10,507
11/30/2003           10,141           11,080
02/29/2004           10,773           12,040
05/31/2004           10,440           11,832
08/31/2004           10,354           11,710
11/30/2004           10,706           12,503
02/28/2005           10,951           12,879
05/31/2005           10,864           12,806
08/31/2005           11,077           13,180
11/30/2005           11,377           13,558
02/28/2006           11,752           13,960
05/31/2006           11,654           13,912
08/31/2006           11,927           14,349

AVERAGE ANNUAL TOTAL RETURN OF CLASS A SHARES OF THE FUND AT 08/31/06

1 Year 1.48%   Since Inception (6/2/03) 5.58%

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, IF REDEEMED PRIOR TO THE END OF THE WARRANTY
PERIOD (AUGUST 5, 2010), 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 3% (SINCE INCEPTION); AND FOR CLASS C
AND CLASS N SHARES, THE CONTINGENT 1% DEFERRED SALES CHARGE FOR THE 1-YEAR
PERIOD. SEE PAGE 19 FOR FURTHER INFORMATION.


              15 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



FUND PERFORMANCE DISCUSSION
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CLASS B SHARES

COMPARISON OF CHANGE IN VALUE OF $10,000 HYPOTHETICAL INVESTMENTS IN:

   Oppenheimer Principal Protected Main Street Fund (Class B)
   S&P 500 Index

 [THE FOLLOWING TABLE WAS REPRESENTED BY A LINE GRAPH IN THE PRINTED MATERIAL.]

                  Oppenheimer
                   Principal
             Protected Main Street   S&P 500
                Fund (Class B)        Index

06/02/2003           10,000           10,000
08/31/2003           10,280           10,507
11/30/2003           10,730           11,080
02/29/2004           11,374           12,040
05/31/2004           11,012           11,832
08/31/2004           10,891           11,710
11/30/2004           11,243           12,503
02/28/2005           11,486           12,879
05/31/2005           11,364           12,806
08/31/2005           11,567           13,180
11/30/2005           11,851           13,558
02/28/2006           12,222           13,960
05/31/2006           12,100           13,912
08/31/2006           12,065           14,349

AVERAGE ANNUAL TOTAL RETURN OF CLASS B SHARES OF THE FUND AT 08/31/06

1 Year 1.89%   Since Inception (6/2/03) 5.95%


              16 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



CLASS C SHARES

COMPARISON OF CHANGE IN VALUE OF $10,000 HYPOTHETICAL INVESTMENTS IN:

   Oppenheimer Principal Protected Main Street Fund (Class C)
   S&P 500 Index

 [THE FOLLOWING TABLE WAS REPRESENTED BY A LINE GRAPH IN THE PRINTED MATERIAL.]

                  Oppenheimer
                   Principal
             Protected Main Street   S&P 500
                Fund (Class C)        Index

06/02/2003           10,000           10,000
08/31/2003           10,280           10,507
11/30/2003           10,730           11,080
02/29/2004           11,375           12,040
05/31/2004           11,012           11,832
08/31/2004           10,892           11,710
11/30/2004           11,244           12,503
02/28/2005           11,480           12,879
05/31/2005           11,369           12,806
08/31/2005           11,572           13,180
11/30/2005           11,855           13,558
02/28/2006           12,231           13,960
05/31/2006           12,110           13,912
08/31/2006           12,373           14,349

AVERAGE ANNUAL TOTAL RETURN OF CLASS C SHARES OF THE FUND AT 08/31/06

1 Year 5.93%   Since Inception (6/2/03) 6.78%

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, IF REDEEMED PRIOR TO THE END OF THE WARRANTY
PERIOD (AUGUST 5, 2010), 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 3% (SINCE INCEPTION); AND FOR CLASS C
AND CLASS N SHARES, THE CONTINGENT 1% DEFERRED SALES CHARGE FOR THE 1-YEAR
PERIOD. SEE PAGE 19 FOR FURTHER INFORMATION.


              17 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



FUND PERFORMANCE DISCUSSION
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CLASS N SHARES

COMPARISON OF CHANGE IN VALUE OF $10,000 HYPOTHETICAL INVESTMENTS IN:

   Oppenheimer Principal Protected Main Street Fund (Class N)
   S&P 500 Index

 [THE FOLLOWING TABLE WAS REPRESENTED BY A LINE GRAPH IN THE PRINTED MATERIAL.]

             Oppenheimer Principal
             Protected Main Street
                Fund (Class N)       S&P 500 Index

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 6.50%   Since Inception (6/2/03) 7.33%

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, IF REDEEMED PRIOR TO THE END OF THE WARRANTY
PERIOD (AUGUST 5, 2010), 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 3% (SINCE INCEPTION); AND FOR CLASS C
AND CLASS N SHARES, THE CONTINGENT 1% DEFERRED SALES CHARGE FOR THE 1-YEAR
PERIOD. SEE PAGE 19 FOR FURTHER INFORMATION.


              18 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



NOTES
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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.

The Fund has entered into a warranty agreement with Merrill Lynch Bank USA, "the
warranty provider" to make sure that the value of each shareholder's account on
the maturity date (August 5, 2010) will be at least equal to a shareholder's
original investment (reduced by any adjustments to the warranty amount permitted
by the Warranty Agreement, and less any redemptions of Fund shares or
distributions taken in cash, sales charges, and extraordinary Fund expenses).
The Warranty is solely the obligation of the Warranty provider to the Fund, not
to the shareholders. The Warranty is dependent on the financial ability of the
Warranty provider to pay. The Warranty Amount will be reduced by any redemptions
of Fund shares or distributions taken in cash, sales charges and extraordinary
fund expenses. Distributions from the Fund are taxable whether or not
shareholders reinvest them in additional shares of the Fund. The Warranty does
not apply to shares redeemed during the Warranty Period, and you can lose money
on shares you redeem early. Neither the Fund nor OppenheimerFunds, Inc. is
obligated to replace the Warranty provider should it be unable to make payments
necessary to support the Warranty Amount. The Financial Warranty increases the
Fund's expenses that shareholders pay and could lower Fund performance.
Shareholders


              19 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



NOTES
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must redeem their shares in the Fund on, and only on, the Maturity Date
(expected to be August 5, 2010) to receive the greater of the then-current net
asset value of the Fund or their Warranty Amount. Prior to the Maturity Date the
Fund will provide each shareholder a notice to remind them that shares must be
redeemed on the Maturity Date to receive the full benefit of the Financial
Warranty. After the Maturity Date, shares of the Fund will not be covered under
the terms of the Financial Warranty and will be subject to market fluctuations
and the shares will then be redeemable at the Fund's then-current net asset
value, which may be lower than the Warranty Amount.

Shares may be exchanged or redeemed at any time. However, if you redeem shares
prior to the end of the seven-year Warranty Period you will receive the
then-current NAV per share, which may be higher or lower than the Warranty
Amount. To receive at least the full Warranty Amount, you must maintain your
original investment in the Fund until the end of the seven-year term and
reinvest all dividends and distributions.

During the Warranty Period, there are substantial opportunity costs. Allocating
assets to U.S. Government securities reduces the Fund's ability to participate
fully in upward equity market movements. Therefore, it represents some loss of
opportunity, or opportunity cost, compared to a portfolio that is fully invested
in equities. In the event that the Fund's stock allocation declines
substantially, generally due to heavy stock market declines, then the Fund will
permanently shift all investments to fixed income securities and certain of the
Fund's expenses will be reduced. In the event of reallocation of 100% of the
Fund's assets to U.S. Government securities, the Fund will not be permitted to
allocate its assets to equity securities for the remainder of the Warranty
Period, which will eliminate the Fund's ability to participate in any upward
equity market movement.

While these fixed income securities (primarily U.S. Government securities) that
the Fund invests in don't pay income the traditional way, an income calculation
is made for tax purposes based on the purchase price and the time until the
security reaches par value. Like traditional interest payments, this amount is
reported as income for tax purposes. The zero coupon bonds the Fund invests in
do not pay interest income until maturity. However,


              20 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



NOTES
- --------------------------------------------------------------------------------

the Fund is required to accrue and declare a dividend on such phantom income.
Thus, you will have taxable income.

Distributions from the Fund are taxable whether or not you reinvest them in
additional shares of the Fund. The Fund is not obligated to replace the Warranty
Provider should it be unable to make the payments necessary to support the
Warranty Amount. The Financial Warranty increases the Fund's expenses that you
pay and therefore the Fund's expenses will generally be higher than a fund that
does not offer a Warranty.

The Fund offered its shares to the public from May 30, 2003 through July 31,
2003. From August 5, 2003, and until August 5, 2010, shares of the Fund will
only be issued upon reinvestment of dividends and distributions.

An explanation of the calculation of performance is in the Fund's Statement of
Additional Information.


              21 | OPPENHEIMER PRINCIPAL PROTECTED 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 Portfolio'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 the
Statement


             22 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



FUND EXPENSES
- --------------------------------------------------------------------------------

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   $1,014.90   $5.04
- --------------------------------------------------------------------------------
Class A Hypothetical                      1,000.00    1,020.21    5.05
- --------------------------------------------------------------------------------
Class B Actual                            1,000.00    1,011.60    8.86
- --------------------------------------------------------------------------------
Class B Hypothetical                      1,000.00    1,016.43    8.88
- --------------------------------------------------------------------------------
Class C Actual                            1,000.00    1,011.60    8.86
- --------------------------------------------------------------------------------
Class C Hypothetical                      1,000.00    1,016.43    8.88
- --------------------------------------------------------------------------------
Class N Actual                            1,000.00    1,014.10    5.96
- --------------------------------------------------------------------------------
Class N Hypothetical                      1,000.00    1,019.31    5.97

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,
excluding all underlying fund expenses, based on the 6-month period ended August
31, 2006 are as follows:

CLASS      EXPENSE RATIOS
- -------------------------
Class A           0.99%
- -------------------------
Class B           1.74
- -------------------------
Class C           1.74
- -------------------------
Class N           1.17

The expense ratios reflect voluntary waivers or reimbursements of expenses by
the Fund's Manager that can be terminated at any time, without advance notice.
The "Financial Highlights" tables in the Fund's financial statements, included
in this report, also show the gross expense ratios, without such waivers or
reimbursements.
- --------------------------------------------------------------------------------


              23 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



STATEMENT OF INVESTMENTS August 31, 2006
- --------------------------------------------------------------------------------



                                                                            VALUE
                                                             SHARES     SEE NOTE 1
- ------------------------------------------------------------------------------------
                                                                 
INVESTMENTS IN AFFILIATED COMPANIES--99.6% 1
- ------------------------------------------------------------------------------------
Oppenheimer Main Street Fund, Cl. Y (Cost $150,397,702)   5,200,552    $204,537,707

                                                          PRINCIPAL
                                                             AMOUNT
- ------------------------------------------------------------------------------------
JOINT REPURCHASE AGREEMENTS--0.9%
- ------------------------------------------------------------------------------------
Undivided interest of 0.35% in joint repurchase
agreement (Principal Amount /Value with a maturity
value of $500,507,285) with Cantor $500,435,000,
Fitzgerald & Co./Cantor Fitzgerald 5.20%, dated
8/31/06, to Securities, be repurchased at $1,764,255
on 9/1/06, collateralized by U.S. Treasury Bonds,
6.125%-8.50%, 2/15/20-11/15/27, with a value of
$511,207,010 (Cost $1,764,000)                           $1,764,000       1,764,000
- ------------------------------------------------------------------------------------
TOTAL INVESTMENTS, AT VALUE (COST $152,161,702)               100.5%    206,301,707
- ------------------------------------------------------------------------------------
LIABILITIES IN EXCESS OF OTHER ASSETS                          (0.5)       (998,459)
                                                         ---------------------------
NET ASSETS                                                    100.0%   $205,303,248
                                                         ===========================


FOOTNOTE TO STATEMENT OF INVESTMENTS

1. Represents ownership of an affiliated fund, at or during the period ended
August 31, 2006. Transactions during the period in which the issuer was an
affiliate are as follows:



                                              SHARES       GROSS        GROSS            SHARES
                                     AUGUST 31, 2005   ADDITIONS   REDUCTIONS   AUGUST 31, 2006
- -----------------------------------------------------------------------------------------------
                                                                          
Oppenheimer Main Street Fund, Cl. Y        5,428,525   1,105,831    1,333,804         5,200,552




                                                              VALUE     DIVIDEND   REALIZED
                                                         SEE NOTE 1       INCOME       LOSS
- -------------------------------------------------------------------------------------------
                                                                          
Oppenheimer Main Street Fund, Cl. Y                    $204,537,707   $3,149,822   $557,671


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


              24 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



STATEMENT OF ASSETS AND LIABILITIES August 31, 2006
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
ASSETS
- --------------------------------------------------------------------------------
Investments, at value--see accompanying statement of
investments:
Unaffiliated companies (cost $1,764,000)                           $  1,764,000
Affiliated companies (cost $150,397,702)                            204,537,707
                                                                   -------------
                                                                    206,301,707
- --------------------------------------------------------------------------------
Cash                                                                     90,505
- --------------------------------------------------------------------------------
Receivables and other assets:
Interest                                                                    255
Other                                                                     7,940
                                                                   -------------
Total assets                                                        206,400,407

- --------------------------------------------------------------------------------
LIABILITIES
- --------------------------------------------------------------------------------
Payables and other liabilities:
Shares of beneficial interest redeemed                                  712,845
Warranty agreement fees                                                 204,977
Distribution and service plan fees                                       87,021
Shareholder communications                                               24,564
Transfer and shareholder servicing agent fees                            13,025
Trustees' compensation                                                    5,134
Other                                                                    49,593
                                                                   -------------
Total liabilities                                                     1,097,159

- --------------------------------------------------------------------------------
NET ASSETS                                                         $205,303,248
                                                                   =============

- --------------------------------------------------------------------------------
COMPOSITION OF NET ASSETS
- --------------------------------------------------------------------------------
Par value of shares of beneficial interest                         $     16,839
- --------------------------------------------------------------------------------
Additional paid-in capital                                          153,468,339
- --------------------------------------------------------------------------------
Accumulated net investment loss                                         (89,761)
- --------------------------------------------------------------------------------
Accumulated net realized loss on investments                         (2,232,174)
- --------------------------------------------------------------------------------
Net unrealized appreciation on investments                           54,140,005
                                                                   -------------
NET ASSETS                                                         $205,303,248
                                                                   =============


             25 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



STATEMENT OF ASSETS AND LIABILITIES continued
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
NET ASSET VALUE PER SHARE
- --------------------------------------------------------------------------------
Class A Shares:
Net asset value and redemption price per share (based on
net assets of $54,799,781 and 4,479,459 shares of
beneficial interest outstanding)                                        $ 12.23
Maximum offering price per share (net asset value plus
sales charge of 5.75% of offering price)                                $ 12.98
- --------------------------------------------------------------------------------
Class B Shares:
Net asset value, redemption price (excludes applicable
contingent deferred sales charge) and offering price per
share (based on net assets of $110,227,985 and 9,057,550
shares of beneficial interest outstanding)                              $ 12.17
- --------------------------------------------------------------------------------
Class C Shares:
Net asset value, redemption price (excludes applicable
contingent deferred sales charge) and offering price per
share (based on net assets of $35,733,086 and 2,929,954
shares of beneficial interest outstanding)                              $ 12.20
- --------------------------------------------------------------------------------
Class N Shares:
Net asset value, redemption price (excludes applicable
contingent deferred sales charge) and offering price per
share (based on net assets of $4,542,396 and 371,663
shares of beneficial interest outstanding)                              $ 12.22

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


             26 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



STATEMENT OF OPERATIONS For the Year Ended August 31, 2006
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
INVESTMENT INCOME
- --------------------------------------------------------------------------------
Dividends from affiliated companies                                 $ 3,149,822
- --------------------------------------------------------------------------------
Interest                                                                292,287
- --------------------------------------------------------------------------------
Other income                                                                 72
                                                                    ------------
Total investment income                                               3,442,181

- --------------------------------------------------------------------------------
EXPENSES
- --------------------------------------------------------------------------------
Management fees                                                         134,914
- --------------------------------------------------------------------------------
Distribution and service plan fees:
Class A                                                                 149,430
Class B                                                               1,149,097
Class C                                                                 388,736
Class N                                                                  22,348
- --------------------------------------------------------------------------------
Transfer and shareholder servicing agent fees:
Class A                                                                  40,870
Class B                                                                  88,982
Class C                                                                  25,951
Class N                                                                     810
- --------------------------------------------------------------------------------
Shareholder communications:
Class A                                                                  19,761
Class B                                                                  32,428
Class C                                                                  10,227
Class N                                                                     560
- --------------------------------------------------------------------------------
Warranty agreement fees                                               1,310,243
- --------------------------------------------------------------------------------
Trustees' compensation                                                    7,135
- --------------------------------------------------------------------------------
Custodian fees and expenses                                               1,728
- --------------------------------------------------------------------------------
Administration service fees                                               1,500
- --------------------------------------------------------------------------------
Other                                                                    27,547
                                                                    ------------
Total expenses                                                        3,412,267
Less reduction to custodian fees                                           (232)
Less waivers and reimbursements of expenses                             (76,722)
                                                                    ------------
Net expenses                                                          3,335,313

- --------------------------------------------------------------------------------
NET INVESTMENT INCOME                                                   106,868
- --------------------------------------------------------------------------------
REALIZED AND UNREALIZED GAIN (LOSS)
- --------------------------------------------------------------------------------
Net realized gain (loss) on:
Investments:
Unaffiliated companies                                                 (354,650)
Affiliated companies                                                    557,671
                                                                    ------------
Net realized gain                                                       203,021
- --------------------------------------------------------------------------------
Net change in unrealized appreciation on investments                 14,942,095

- --------------------------------------------------------------------------------
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS                $15,251,984
                                                                    ============

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


             27 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



STATEMENTS OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------



YEAR ENDED AUGUST 31,                                          2006           2005
- -----------------------------------------------------------------------------------
                                                                
OPERATIONS
- -----------------------------------------------------------------------------------
Net investment income                                  $    106,868   $  1,146,783
- -----------------------------------------------------------------------------------
Net realized gain (loss)                                    203,021     (1,432,637)
- -----------------------------------------------------------------------------------
Net change in unrealized appreciation                    14,942,095     15,647,720
                                                       ----------------------------
Net increase in net assets resulting from operations     15,251,984     15,361,866

- -----------------------------------------------------------------------------------
DIVIDENDS AND/OR DISTRIBUTIONS TO SHAREHOLDERS
- -----------------------------------------------------------------------------------
Dividends from net investment income:
Class A                                                     (78,074)      (740,479)
Class B                                                     (20,939)      (334,234)
Class C                                                      (5,166)       (60,042)
Class N                                                      (4,483)       (37,650)
- -----------------------------------------------------------------------------------
Tax return of capital distribution from net
investment income:
Class A                                                    (476,878)       (26,368)
Class B                                                    (127,894)       (46,339)
Class C                                                     (31,550)       (17,685)
Class N                                                     (27,384)        (1,785)
- -----------------------------------------------------------------------------------
Distributions from net realized gain:
Class A                                                          --       (116,398)
Class B                                                          --       (196,622)
Class C                                                          --        (77,353)
Class N                                                          --         (6,968)
- -----------------------------------------------------------------------------------
Tax return of capital distribution from net
realized gain:
Class A                                                          --       (243,697)
Class B                                                          --       (428,267)
Class C                                                          --       (163,449)
Class N                                                          --        (16,502)

- -----------------------------------------------------------------------------------
BENEFICIAL INTEREST TRANSACTIONS
- -----------------------------------------------------------------------------------
Net decrease in net assets resulting from
beneficial interest transactions:
Class A                                                 (13,502,136)   (10,988,559)
Class B                                                 (14,393,299)   (11,713,778)
Class C                                                  (8,227,940)   (13,016,364)
Class N                                                     (70,695)    (1,038,745)

- -----------------------------------------------------------------------------------
NET ASSETS
- -----------------------------------------------------------------------------------
Total decrease                                          (21,714,454)   (23,909,418)
- -----------------------------------------------------------------------------------
Beginning of period                                     227,017,702    250,927,120
                                                       ----------------------------
End of period (including accumulated net investment
loss of $89,761 and $109,396, respectively)            $205,303,248   $227,017,702
                                                       ============================


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


              28 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------



CLASS A   YEAR ENDED AUGUST 31,                                    2006       2005       2004       2003 1
- -----------------------------------------------------------------------------------------------------------
                                                                                      
PER SHARE OPERATING DATA
- -----------------------------------------------------------------------------------------------------------
Net asset value, beginning of period                            $ 11.46    $ 10.88    $ 10.28    $ 10.00
- -----------------------------------------------------------------------------------------------------------
Income from investment operations:
Net investment income                                               .07 2      .11 2      .07         -- 3
Net realized and unrealized gain                                    .80        .65        .64        .28
                                                             ----------------------------------------------
Total from investment operations                                    .87        .76        .71        .28
- -----------------------------------------------------------------------------------------------------------
Dividends and/or distributions to shareholders:
Dividends from net investment income                               (.01)      (.12)      (.07)        --
Tax return of capital distribution from
net investment income                                              (.09)        -- 3       --         --
Dividends from net realized gain                                     --       (.02)      (.02)        --
Tax return of capital distribution from net realized gain            --       (.04)      (.02)        --
                                                             ----------------------------------------------
Total dividends and/or distributions to shareholders               (.10)      (.18)      (.11)        --
- -----------------------------------------------------------------------------------------------------------
Net asset value, end of period                                  $ 12.23    $ 11.46    $ 10.88    $ 10.28
                                                             ==============================================

- -----------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 4                                 7.67%      6.98%      6.87%      2.80%
- -----------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- -----------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)                        $54,800    $64,304    $71,666    $78,758
- -----------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                               $60,071    $68,812    $78,668    $39,416
- -----------------------------------------------------------------------------------------------------------
Ratios to average net assets: 5
Net investment income                                              0.62%      1.02%      0.65%      0.35%
Total expenses 6                                                   1.03%      1.10%      1.14%      1.13%
Less reimbursement of management fees during offering period         --         --         --      (0.32)%
Payments and waivers and reduction to custodian expenses          (0.03)%    (0.06)%    (0.12)%       --
                                                             ----------------------------------------------
Net expenses                                                       1.00%      1.04%      1.02%      0.81% 7
- -----------------------------------------------------------------------------------------------------------
Portfolio turnover rate                                              26%       122%       179%        12%


1. For the period from June 2, 2003 (commencement of operations) to August 31,
2003.

2. Per share amounts calculated based on the average shares outstanding during
the period.

3. Less than $0.005 per share.

4. Assumes an investment on the business day before the first day of the fiscal
period, with all dividends and distributions reinvested in additional shares on
the reinvestment date, and redemption at the net asset value calculated on the
last business day of the fiscal period. Sales charges are not reflected in the
total returns. Total returns are not annualized for periods of less than one
full year. Returns do not reflect the deduction of taxes that a shareholder
would pay on fund distributions or the redemption of fund shares.

5. Annualized for periods of less than one full year.

6. Expenses paid including all underlying fund expenses were as follows:

            Year Ended August 31, 2006   1.50%
            Year Ended August 31, 2005   1.52% 8
            Year Ended August 31, 2004   1.60%
          Period Ended August 31, 2003   1.38%

7. For this period reduction to custodian expenses was zero.

8. Restated since August 31, 2005.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


              29 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



FINANCIAL HIGHLIGHTS Continued
- --------------------------------------------------------------------------------



CLASS B     YEAR ENDED AUGUST 31,                                    2006         2005        2004     2003 1
- ----------------------------------------------------------------------------------------------------------------
                                                                                         
PER SHARE OPERATING DATA
Net asset value, beginning of period                               $11.40     $  10.82    $  10.28   $  10.00

Income (loss) from investment operations:                            (.02) 2       .03 2      (.02)        -- 3
Net investment income (loss)
Net realized and unrealized gain                                      .80          .64         .63        .28
                                                                ------------------------------------------------
Total from investment operations                                      .78          .67         .61        .28
- ----------------------------------------------------------------------------------------------------------------
Dividends and/or distributions to shareholders:
Dividends from net investment income                                   -- 3       (.03)       (.03)        --
Tax return of capital distribution from net investment income        (.01)          -- 3        --         --
Dividends from net realized gain                                       --         (.02)       (.02)        --
Tax return of capital distribution from net realized gain              --         (.04)       (.02)        --
                                                                ------------------------------------------------
Total dividends and/or distributions  to shareholders                (.01)        (.09)       (.07)        --
- ----------------------------------------------------------------------------------------------------------------
Net asset value, end of period                                     $12.17     $  11.40    $  10.82   $  10.28
                                                                ================================================

- ----------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 4                                   6.89%        6.21%       5.94%      2.80%
- ----------------------------------------------------------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- ----------------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)                         $110,228     $117,057    $122,411   $122,968
- ----------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                                $114,903     $120,928    $127,128   $ 64,461
- ----------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 5
Net investment income (loss)                                        (0.19)%       0.23%      (0.14)%    (0.20)%
Total expenses 6                                                     1.78%        1.86%       1.89%      1.88%
Less reimbursement of management fees during offering period           --           --          --      (0.32)%
- ----------------------------------------------------------------------------------------------------------------
Less reimbursement to maintain yield                                   --           --          --      (0.31)%
- ----------------------------------------------------------------------------------------------------------------
Payments and waivers and reduction to custodian expenses            (0.03)%      (0.06)%     (0.12)%       --
                                                                ------------------------------------------------
Net expenses                                                         1.75%        1.80%       1.77%      1.25% 7
- ----------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                                                26%         122%        179%        12%


1. For the period from June 2, 2003 (commencement of operations) to August 31,
2003.

2. Per share amounts calculated based on the average shares outstanding during
the period.

3. Less than $0.005 per share.

4. Assumes an investment on the business day before the first day of the fiscal
period, with all dividends and distributions reinvested in additional shares on
the reinvestment date, and redemption at the net asset value calculated on the
last business day of the fiscal period. Sales charges are not reflected in the
total returns. Total returns are not annualized for periods of less than one
full year. Returns do not reflect the deduction of taxes that a shareholder
would pay on fund distributions or the redemption of fund shares.

5. Annualized for periods of less than one full year.

6. Expenses paid including all underlying fund expenses were as follows:

              Year Ended August 31, 2006   2.25%
              Year Ended August 31, 2005   2.28% 8
              Year Ended August 31, 2004   2.35%
            Period Ended August 31, 2003   2.13%

7. For this period reduction to custodian expenses was zero.

8. Restated since August 31, 2005.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


              30 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND





CLASS C    YEAR ENDED AUGUST 31,                                   2006        2005       2004    2003 1
- -----------------------------------------------------------------------------------------------------------
                                                                                     
PER SHARE OPERATING DATA
- -----------------------------------------------------------------------------------------------------------
Net asset value, beginning of period                            $ 11.42     $ 10.82    $ 10.28   $ 10.00
- -----------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment income (loss)                                       (.02) 2      .03 2     (.02)       -- 3
Net realized and unrealized gain                                    .81         .65        .64       .28
                                                               --------------------------------------------
Total from investment operations                                    .79         .68        .62       .28
- -----------------------------------------------------------------------------------------------------------
Dividends and/or distributions to shareholders:
Dividends from net investment income                                 -- 3      (.02)      (.04)       --
Tax return of capital distribution from net investment income      (.01)         -- 3       --        --
Dividends from net realized gain                                     --        (.02)      (.02)       --
Tax return of capital distribution from net realized gain            --        (.04)      (.02)       --
                                                               --------------------------------------------
Total dividends and/or distributions to shareholders               (.01)       (.08)      (.08)       --
- -----------------------------------------------------------------------------------------------------------
Net asset value, end of period                                  $ 12.20     $ 11.42    $ 10.82   $ 10.28
                                                               ============================================

- -----------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 4                                 6.93%       6.24%      5.95%     2.80%
- -----------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- -----------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)                        $35,733     $41,333    $51,741   $60,271
- -----------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                               $38,862     $46,152    $59,429   $31,946
- -----------------------------------------------------------------------------------------------------------
Ratios to average net assets: 5
Net investment income (loss)                                      (0.14)%      0.29%     (0.10)%   (0.20)%
Total expenses 6                                                   1.77%       1.85%      1.88%     1.88%
Less reimbursement of management fees during offering period         --          --         --     (0.32)%
Less reimbursement to maintain yield                                 --          --         --     (0.32)%
Payments and waivers and reduction to custodian expenses          (0.03)%     (0.06)%    (0.12)%      --
                                                               --------------------------------------------
Net expenses                                                       1.74%       1.79%      1.76%     1.24% 7
- -----------------------------------------------------------------------------------------------------------
Portfolio turnover rate                                              26%        122%       179%       12%


1. For the period from June 2, 2003 (commencement of operations) to August 31,
2003.

2. Per share amounts calculated based on the average shares outstanding during
the period.

3. Less than $0.005 per share.

4. Assumes an investment on the business day before the first day of the fiscal
period, with all dividends and distributions reinvested in additional shares on
the reinvestment date, and redemption at the net asset value calculated on the
last business day of the fiscal period. Sales charges are not reflected in the
total returns. Total returns are not annualized for periods of less than one
full year. Returns do not reflect the deduction of taxes that a shareholder
would pay on fund distributions or the redemption of fund shares.

5. Annualized for periods of less than one full year.

6. Expenses paid including all underlying fund expenses were as follows:

            Year Ended August 31, 2006    2.24%
            Year Ended August 31, 2005    2.27% 8
            Year Ended August 31, 2004    2.34%
          Period Ended August 31, 2003    2.13%

7. For this period reduction to custodian expenses was zero.

8. Restated since August 31, 2005.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


              31 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



FINANCIAL HIGHLIGHTS Continued
- --------------------------------------------------------------------------------



CLASS N   YEAR ENDED AUGUST 31,                                   2006      2005      2004   2003 1
- ------------------------------------------------------------------------------------------------------
                                                                                 
PER SHARE OPERATING DATA
- ------------------------------------------------------------------------------------------------------
Net asset value, beginning of period                            $11.45    $10.86    $10.28   $10.00
- ------------------------------------------------------------------------------------------------------
Income from investment operations:
Net investment income                                              .04 2     .09 2     .05       -- 3
Net realized and unrealized gain                                   .81       .65       .63      .28
                                                             -----------------------------------------
Total from investment operations                                   .85       .74       .68      .28
- ------------------------------------------------------------------------------------------------------
Dividends and/or distributions to shareholders:
Dividends from net investment income                              (.01)     (.09)     (.06)      --
Tax return of capital distribution from net investment income     (.07)       -- 3      --       --
Dividends from net realized gain                                    --      (.02)     (.02)      --
Tax return of capital distribution from net realized gain           --      (.04)     (.02)      --
                                                             -----------------------------------------
Total dividends and/or distributions to shareholders              (.08)     (.15)     (.10)      --
- ------------------------------------------------------------------------------------------------------
Net asset value, end of period                                  $12.22    $11.45    $10.86   $10.28
                                                             =========================================

- ------------------------------------------------------------------------------------------------------
TOTAL RETURN,AT NET ASSET VALUE 4                                 7.50%     6.85%     6.55%    2.80%
- ------------------------------------------------------------------------------------------------------

- ------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- ------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)                        $4,542    $4,324    $5,109   $5,432
- ------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                               $4,477    $4,659    $5,408   $3,713
- ------------------------------------------------------------------------------------------------------
Ratios to average net assets: 5
Net investment income                                             0.34%     0.77%     0.46%    0.06%
Total expenses 6                                                  1.21%     1.28%     1.34%    1.38%
Less reimbursement of management fees during offering period        --        --        --    (0.32)%
Payments and waivers and reduction to custodian expenses         (0.03)%   (0.06)%   (0.12)%     --
                                                             -----------------------------------------
Net expenses                                                      1.18%     1.22%     1.22%    1.06% 7
- ------------------------------------------------------------------------------------------------------
Portfolio turnover rate                                             26%      122%      179%      12%


1. For the period from June 2, 2003 (commencement of operations) to August 31,
2003.

2. Per share amounts calculated based on the average shares outstanding during
the period.

3. Less than $0.005 per share.

4. Assumes an investment on the business day before the first day of the fiscal
period, with all dividends and distributions reinvested in additional shares on
the reinvestment date, and redemption at the net asset value calculated on the
last business day of the fiscal period. Sales charges are not reflected in the
total returns. Total returns are not annualized for periods of less than one
full year. Returns do not reflect the deduction of taxes that a shareholder
would pay on fund distributions or the redemption of fund shares.

5. Annualized for periods of less than one full year.

6. Expenses paid including all underlying fund expenses were as follows:

              Year Ended August 31, 2006   1.68%
              Year Ended August 31, 2005   1.70% 8
              Year Ended August 31, 2004   1.80%
            Period Ended August 31, 2003   1.63%

7. For this period reduction to custodian expenses was zero.

8. Restated since August 31, 2005.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


              32 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



NOTES TO FINANCIAL STATEMENTS
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
1. SIGNIFICANT ACCOUNTING POLICIES

Oppenheimer Principal Protected Main Street Fund (the Fund), a series of
Oppenheimer Principal Protected Trust, is registered under the Investment
Company Act of 1940, as amended, as an open-end management investment company.
During the Warranty Period, the Fund will seek capital preservation in order to
have a net asset value on the Maturity Date at least equal to the Warranty
Amount. The Fund seeks high total return as a secondary objective. The Fund's
investment advisor is OppenheimerFunds, Inc. (the Manager).

     Shares of the Fund were offered during the Offering Period (May 30, 2003 to
July 31, 2003). Shares are not offered during the Warranty Period (August 5,
2003 to August 5, 2010) to the Maturity Date (August 5, 2010) except in
connection with reinvestment of dividends and distributions. During the Warranty
Period, the Fund will allocate its assets between Oppenheimer Main Street Fund
(the Underlying Fund) and certain U.S. government securities.

     The Fund offered Class A, Class B, Class C and Class N shares. Class A
shares were 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 were sold without
a front-end sales charge but may be subject to a contingent deferred sales
charge (CDSC). Class N shares were sold only through retirement plans.
Retirement plans that offer Class N shares 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.
Class B shares will automatically convert to Class A shares 88 months after the
date of purchase.

     The following is a summary of significant accounting policies consistently
followed by the Fund.

- --------------------------------------------------------------------------------
WARRANTY AGREEMENT. The Fund has entered into a Financial Warranty Agreement
with Merrill Lynch Bank USA (the Warranty Provider) to ensure that on the
Maturity Date each shareholder's account will be no less than the value of that
shareholder's account on the second business day after the end of the Offering
Period (the Warranty Amount). This value will include net income, if any, earned
by the Fund during the offering period and be reduced by adjustments permitted
under the Warranty Agreement, sales charges, applicable share of extraordinary
expenses and proportionately reduced for dividends and distributions paid in
cash and redemptions of Fund shares. To avoid a reduced Warranty Amount,
shareholders must reinvest all dividends and distributions received from the
Fund to purchase additional shares of the Fund and must not redeem any shares of
the Fund during the Warranty Period. If the value of the Fund's assets on the
Maturity Date is insufficient to result in the value of each shareholder's
account being at least equal to the shareholder's Warranty Amount, the Warranty
Provider will pay the Fund an amount equal to the excess of his or her Warranty
Amount over his or her account value. The Financial Warranty is


              33 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



NOTES TO FINANCIAL STATEMENTS Continued
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
1. SIGNIFICANT ACCOUNTING POLICIES Continued

solely the obligation of the Warranty Provider. It is possible that the
financial position of the Warranty Provider may deteriorate and it would be
unable to satisfy its obligations under the Financial Warranty. The Fund's
assets and the obligations of the Warranty Provider under the Warranty Agreement
are not guaranteed by Merrill Lynch & Co., Inc. (the Warranty Provider's parent
company), the United States Government, the Manager, or any other entity or
person. The Warranty Agreement requires the Manager, on behalf of the Fund, to
comply with certain agreed upon investment parameters in an attempt to limit the
Fund's risk. If the Manager fails to comply with the agreed-upon investment
parameters or otherwise fails to comply with certain requirements set forth in
the Warranty Agreement, the Warranty Provider may terminate its Financial
Warranty in certain limited circumstances. The Warranty Provider may monitor the
Fund's compliance with the Warranty Agreement solely to protect the interests of
the Warranty Provider and not the Fund's shareholders.

     The fee paid to the Warranty Provider is an annual fee of 0.60% of the
average daily net assets of the Fund. If the Fund is required to make a complete
and irreversible allocation of its assets to the debt portfolio, the Warranty
Fee will thereafter be reduced to 0.35% of the average daily net assets of the
Fund.

- --------------------------------------------------------------------------------
SECURITIES VALUATION. The allocation of the Fund's assets between the debt
portfolio and the equity portfolio will vary over time based upon the Warranty
Formula. The formula is intended to allow the Fund to have a net asset value on
the Maturity Date at least equal to the Warranty Amount.

     During the Warranty Period, the Fund will invest a portion of its assets,
and in certain circumstances, the Fund may invest all of its assets, in U.S.
government securities having maturities approximately equal to the period
remaining in the Warranty Period. Long term debt securities having a remaining
maturity in excess of sixty days will be valued at the mean between the "bid"
and "asked" prices. Long-term and short-term "non-money market" debt securities
are valued by a portfolio pricing service approved by the Board of Trustees.
Short-term "money market type" debt securities with remaining maturities of
sixty days or less are valued at amortized cost (which approximates market
value).

     The Fund invests the equity portfolio in Class Y shares of Oppenheimer Main
Street Fund (the Underlying Fund). The net asset value of the Underlying Fund is
determined 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.
The net asset value per share is determined by dividing the value of the Fund's
net assets attributable to a class by the number of shares of that class that
are outstanding.

- --------------------------------------------------------------------------------
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


              34 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



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.

- --------------------------------------------------------------------------------
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 1,2,3         TAX PURPOSES
- ------------------------------------------------------------------------
$--                        $--           $1,992,779          $53,900,610

1. As of August 31, 2006, the Fund had $1,992,779 of net capital loss
carryforwards available to offset future realized capital gains, if any, and
thereby reduce future taxable gain distributions. As of August 31, 2006, details
of the capital loss carryforward were as follows:

                             EXPIRING
                             ---------------------
                             2014       $1,992,779

2. During the fiscal year ended August 31, 2006, the Fund did not utilize any
capital loss carryforward.

3. During the fiscal year ended August 31, 2005, the Fund did not utilize any
capital loss carryforward.

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.


              35 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



NOTES TO FINANCIAL STATEMENTS Continued
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
1. SIGNIFICANT ACCOUNTING POLICIES Continued

                                            REDUCTION TO
                       REDUCTION TO      ACCUMULATED NET
                       PAID-IN CAPITAL   INVESTMENT LOSS
                       ---------------------------------
                       $685,135                 $685,135

The tax character of distributions paid during the years ended August 31, 2006
and August 31, 2005 was as follows:

                                          YEAR ENDED        YEAR ENDED
                                     AUGUST 31, 2006   AUGUST 31, 2005
          ------------------------------------------------------------
          Distributions paid from:
          Ordinary income                   $108,662        $1,172,405
          Long-term capital gain                  --           397,341
          Return of capital                  663,706           944,092
                                     ---------------------------------
          Total                             $772,368        $2,513,838
                                     =================================

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    $152,401,097
                                            ============
          Gross unrealized appreciation     $ 53,900,610
          Gross unrealized depreciation               --
                                            ------------
          Net unrealized appreciation       $ 53,900,610
                                            ============

- --------------------------------------------------------------------------------
TRUSTEES' COMPENSATION. The Board of Trustees has adopted a deferred
compensation plan for independent trustees that enables trustees to elect to
defer receipt of all or a portion of the annual compensation they are entitled
to receive from the Fund. For purposes of determining the amount owed to the
Trustee under the plan, deferred amounts are treated as though equal dollar
amounts had been invested in shares of the Fund or in other Oppenheimer funds
selected by the Trustee. The Fund purchases shares of the funds selected for
deferral by the Trustee in amounts equal to his or her deemed investment,
resulting in a Fund asset equal to the deferred compensation liability. Such
assets are included as a component of "Other" within the asset section of the
Statement of Assets and Liabilities. Deferral of trustees' fees under the plan
will not affect the net assets of the Fund, and will not materially affect the
Fund's assets, liabilities or net investment income per share. Amounts will be
deferred until distributed in accordance to the Plan.


              36 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



- --------------------------------------------------------------------------------
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 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.


              37 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



NOTES TO FINANCIAL STATEMENTS Continued
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
2. SHARES OF BENEFICIAL INTEREST

The Fund has authorized an unlimited number of $0.001 par value shares of
beneficial interest of each class. Transactions in shares of beneficial interest
were as follows:




                            YEAR ENDED AUGUST 31, 2006    YEAR ENDED AUGUST 31, 2005

                                SHARES          AMOUNT        SHARES          AMOUNT
- -------------------------------------------------------------------------------------
                                                            
CLASS A
Sold                             6,556    $     79,128 1          --    $         --
Dividends and/or
distributions reinvested        43,093         505,045        89,132       1,017,885
Redeemed                    (1,179,635)    (14,086,309)   (1,068,185)    (12,006,444)
                           ----------------------------------------------------------
Net decrease                (1,129,986)   $(13,502,136)     (979,053)   $(10,988,559)
                           ==========================================================

- -------------------------------------------------------------------------------------
CLASS B
Dividends and/or
distributions reinvested        10,834    $    126,979        74,867    $    854,981
Redeemed                    (1,218,645)    (14,520,278)   (1,121,129)    (12,568,759)
                           ----------------------------------------------------------
Net decrease                (1,207,811)   $(14,393,299)   (1,046,262)   $(11,713,778)
                           ==========================================================

- -------------------------------------------------------------------------------------
CLASS C
Dividends and/or
distributions reinvested         2,288    $     26,884        20,067    $    229,565
Redeemed                      (691,022)     (8,254,824)   (1,182,239)    (13,245,929)
                           ----------------------------------------------------------
Net decrease                  (688,734)   $ (8,227,940)   (1,162,172)   $(13,016,364)
                           ==========================================================

- -------------------------------------------------------------------------------------
CLASS N
Dividends and/or
distributions reinvested         2,716    $     31,858         5,502    $     62,890
Redeemed                        (8,595)       (102,553)      (98,232)     (1,101,635)
                           ----------------------------------------------------------
Net decrease                    (5,879)   $    (70,695)      (92,730)   $ (1,038,745)
                           ==========================================================


1. Result of a broker correction to a shareholder transaction.

- --------------------------------------------------------------------------------
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             $40,886,066    $49,684,431
          U.S. government and government
          agency obligations                 15,699,080     43,315,230

- --------------------------------------------------------------------------------
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
annual rate of 0.50% of the average annual net assets of the Fund reduced by the
amount of advisory fees paid to the Manager by the Underlying Fund relating to
the Fund's assets invested in


              38 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



the Underlying Fund. However, the management fees shall not be reduced below
zero. Management fees will apply during the Warranty Period and the
Post-Warranty Period.

     If during the Warranty Period 100% of the Fund's assets are completely and
irreversibly invested in the debt portfolio, the management fee will be at an
annual rate of 0.25% of the average annual net assets of the Fund, and if that
occurs the Manager will further reduce its management fee to the extent
necessary so that expenses after waivers and reductions to the Fund (other than
Extraordinary Expenses such as litigation costs) do not exceed 1.30% for Class A
shares, 2.05% for Class B shares, 2.05% for Class C shares and 1.55% for Class N
shares. However, if this reduction in the management fee is not sufficient to
reduce expenses after waivers and reductions to these limits, the Manager is not
required to subsidize Fund expenses to assure that expenses do not exceed those
limits. Furthermore, if expenses exceed these expense limits, the Warranty
Amount will be reduced by any expenses that exceed those limits. The Manager
voluntarily waived its management fee during the Offering Period. In addition,
during the Warranty Period the Manager has voluntarily agreed to reduce the
management fee payable by the Fund by 0.00833% per month in any month following
a month where the Fund's average daily equity allocation was less than 10%.
Those voluntary undertakings may be amended or eliminated at any time.

- --------------------------------------------------------------------------------
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
$158,454 to OFS for services to the Fund.

- --------------------------------------------------------------------------------
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


              39 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



NOTES TO FINANCIAL STATEMENTS Continued
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
4. FEES AND OTHER TRANSACTIONS WITH AFFILIATES Continued

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 Trustees and its
independent trustees must determine whether the Distributor shall be entitled to
payment from the Fund of all or a portion of the service fee and/or asset-based
sales charge in respect to shares sold prior to the effective date of such
termination. The Distributor's aggregate uncompensated expenses under the plan
at August 31, 2006 for Class B, Class C and Class N shares were $3,065,230,
$811,090 and $91,045, 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.



                                        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             $--             $--        $252,360             $--             $--


- --------------------------------------------------------------------------------
WAIVERS AND REIMBURSEMENTS OF EXPENSES. The Manager has voluntarily undertaken
to reimburse the Fund for expenses equal to the Underlying Fund expenses, other
than Underlying Fund management fees, paid by the Fund as a shareholder of the
Underlying Fund. That expense reimbursement will fluctuate as the Fund's
allocation between the Underlying Fund and the debt portfolio changes. During
the year ended August 31, 2006, the Manager reimbursed the Fund $76,722. This
voluntary undertaking may be amended or eliminated at any time.

     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. 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


              40 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



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.

- --------------------------------------------------------------------------------
6. 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.

     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.


              41 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
TO THE BOARD OF TRUSTEES AND SHAREHOLDERS OF
OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND:

We have audited the accompanying statement of assets and liabilities of
Oppenheimer Principal Protected Main Street Fund, a series of Oppenheimer
Principal Protected Trust, 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 the periods presented. 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 Principal Protected 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 the periods presented, in conformity with accounting principles generally
accepted in the United States of America.

DELOITTE & TOUCHE LLP

Denver, Colorado
October 16, 2006


              42 | OPPENHEIMER PRINCIPAL PROTECTED 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.
$1,110,137 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, $7,407 or 0.96% 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.


              43 | OPPENHEIMER PRINCIPAL PROTECTED 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.


              44 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



TRUSTEES AND OFFICERS Unaudited
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
NAME, POSITION(S) HELD WITH      PRINCIPAL OCCUPATION(S) DURING PAST 5 YEARS;
THE FUND, LENGTH OF SERVICE,     OTHER TRUSTEESHIPS/DIRECTORSHIPS HELD; NUMBER
AGE                              OF PORTFOLIOS IN THE FUND COMPLEX CURRENTLY
                                 OVERSEEN

INDEPENDENT                      THE ADDRESS OF EACH TRUSTEE IN THE CHART BELOW
TRUSTEES                         IS 6803 S. TUCSON WAY, CENTENNIAL, COLORADO
                                 80112-3924. EACH TRUSTEE SERVES FOR AN
                                 INDEFINITE TERM, OR UNTIL HIS OR HER
                                 RESIGNATION, RETIREMENT, DEATH OR REMOVAL.

WILLIAM L. ARMSTRONG,            President, Colorado Christian University (since
Chairman of the Board of         2006); Chairman of the following private
Trustees (since 2003), Trustee   mortgage banking companies: Cherry Creek
(since 2003)                     Mortgage Company (since 1991), Centennial State
Age: 69                          Mortgage Company (since 1994), and The El Paso
                                 Mortgage Company (since 1993); Chairman of the
                                 following private 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 insurance 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,
Trustee (since 2003)             Inc. (General Partner of private equity funds)
Age: 75                          (until February 2001); Chairman, President and
                                 Chief Executive 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 portfolios in the OppenheimerFunds
                                 complex.

GEORGE C. BOWEN,                 Assistant Secretary and Director of Centennial
Trustee (since 2003)             Asset Management Corporation (December
Age: 70                          1991-April 1999); President, Treasurer and
                                 Director of Centennial 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
Trustee (since 2003)             (George Washington historical site) (since June
Age: 68                          2000); Director of Genetic ID, Inc. (biotech
                                 company) (March 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)
Trustee (since 2003)             (since June 2002); Director of Northwestern
Age: 64                          Energy Corp. (public utility corporation)
                                 (since November 2004); 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; President, Chief
                                 Executive Officer and Director of the
                                 following: Oppenheimer


              45 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



TRUSTEES AND OFFICERS Unaudited / Continued
- --------------------------------------------------------------------------------

JON S. FOSSEL,                   Acquisition Corp. ("OAC") (parent holding
Continued                        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
Trustee (since 2003)             organization) (since September 1984). Mr.
Age: 66                          Freedman held several positions with the
                                 Manager and with subsidiary or affiliated
                                 companies of the Manager (until October 1994).
                                 Oversees 38 portfolios in the OppenheimerFunds
                                 complex.

BEVERLY L. HAMILTON,             Trustee of Monterey Institute for International
Trustee (since 2003)             Studies (educational organization) (since
Age: 60                          February 2000); Board Member of Middlebury
                                 College (educational organization) (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
Trustee (since 2003)             (educational organization) (since August 2005);
Age: 62                          Chairman, Chief Executive Officer and Director
                                 of Steele Street 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
Trustee (since 2003)             MassMutual Institutional Funds) (investment
Age: 64                          company) (since 1996) and MML Series Investment
                                 Fund (investment company) (since 1996); Trustee
                                 (since 1987) and Chairman (1994-2005) of the
                                 Investment Committee of the Worcester Polytech
                                 Institute (private university); President and
                                 Treasurer of the SIS Funds (private charitable
                                 fund) (since January 1999); Chairman of SIS &
                                 Family Bank, F.S.B. (formerly SIS Bank)
                                 (commercial 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 TRUSTEE AND           THE ADDRESS OF MR. MURPHY IS TWO WORLD
OFFICER                          FINANCIAL CENTER, 225 LIBERTY STREET, 11TH
                                 FLOOR, NEW YORK, NEW YORK 10281-1008. MR.
                                 MURPHY SERVES AS A TRUSTEE FOR AN INDEF-INITE
                                 TERM, OR UNTIL HIS RESIGNATION, RETIREMENT,
                                 DEATH OR REMOVAL AND AS AN OFFICER FOR AN
                                 INDEFINITE TERM, OR UNTIL HIS RESIGNATION,
                                 RETIREMENT, DEATH OR REMOVAL. MR. MURPHY IS AN
                                 INTERESTED TRUSTEE DUE TO HIS POSITIONS WITH
                                 OPPENHEIMERFUNDS, INC. AND ITS AFFILIATES.


              46 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



JOHN V. MURPHY,                  Chairman, Chief Executive Officer and Director
Trustee, President and           (since June 2001) and President (since
Principal Executive Officer      September 2000) of the Manager; President and
(since 2003)                     director or trustee of other Oppenheimer funds;
Age: 57                          President and Director of OAC and of
                                 Oppenheimer Partnership Holdings, Inc. (holding
                                 company subsidiary of the Manager) (since 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
                                 subsidiaries 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 parent 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 OF THE            THE ADDRESSES OF THE OFFICERS IN THE CHART
FUND                             BELOW ARE AS FOLLOWS: FOR MESSRS. MANIOUDAKIS,
                                 SCHADT, 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.

ANGELO G. MANIOUDAKIS,           Senior Vice President of the Manager (since
Vice President and Portfolio     April 2002), of HarbourView Asset Management
Manager (since 2003)             Corporation (since April, 2002 and of OFI
Age: 39                          Institutional Asset Management, Inc. (since
                                 June 2002); Executive Director and portfolio
                                 manager for Miller, Anderson & Sherrerd, a
                                 division of Morgan Stanley Investment
                                 Management (August 1993-April 2002). An officer
                                 of 15 portfolios in the OppenheimerFunds
                                 complex.

RUDI W. SCHADT,                  Vice President, Director of Research in Product
Vice President and Portfolio     Design and Risk Management of the Manager.
Manager (since 2004)             Prior to joining the Manager in February 2002
Age: 48                          he was a Director and Senior Quantitative
                                 Analyst (2000-2001) at UBS Asset Management
                                 prior to which he was an Associate Director of
                                 Research (since June 1999) and Senior
                                 Researcher and Portfolio Manager (from June
                                 1997) at State Street Global Advisors. An
                                 officer of 7 portfolios in the OppenheimerFunds
                                 complex.

MARK S. VANDEHEY,                Senior Vice President and Chief Compliance
Vice President and Chief         Officer of the Manager (since March 2004); Vice
Compliance Officer               President of OppenheimerFunds Distributor,
(since 2004)                     Inc., Centennial Asset Management Corporation
Age: 56                          and Shareholder Services, Inc. (since June
                                 1983); Vice President and Director of Internal
                                 Audit of the Manager (1997-February 2004). An
                                 officer of 91 portfolios in the
                                 OppenheimerFunds complex.


              47 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



TRUSTEES AND OFFICERS Unaudited / Continued
- --------------------------------------------------------------------------------

BRIAN W. WIXTED,                 Senior Vice President and Treasurer of the
Treasurer and Principal          Manager (since March 1999); Treasurer of the
Financial and Accounting         following: HarbourView Asset Management
Officer (since 2003)             Corporation, Shareholder Financial Services,
Age: 47                          Inc., Shareholder Services, Inc., Oppenheimer
                                 Real Asset Management Corporation, and
                                 Oppenheimer Partnership Holdings, Inc. (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
Assistant Treasurer              August 2002); Manager/Financial Product
(since 2004)                     Accounting of the Manager (November 1998-July
Age: 36                          2002). An officer of 91 portfolios in the
                                 OppenheimerFunds complex.

BRIAN C. SZILAGYI,               Assistant Vice President of the Manager (since
Assistant Treasurer              July 2004); Director of Financial Reporting and
(since 2005)                     Compliance of First Data Corporation (April
Age: 36                          2003-July 2004); Manager of Compliance of
                                 Berger Financial Group LLC (May 2001-March
                                 2003); 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)
Vice President and Secretary     and General Counsel (since March 2002) of the
(since 2003)                     Manager; General Counsel and Director of the
Age: 58                          Distributor (since December 2001); General
                                 Counsel of Centennial Asset Management
                                 Corporation (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 officer of
                                 91 portfolios in the OppenheimerFunds complex.


              48 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



LISA I. BLOOMBERG,               Vice President and Associate Counsel of the
Assistant Secretary              Manager (since May 2004); First Vice President
(since 2004)                     (April 2001-April 2004), Associate General
Age: 38                          Counsel (December 2000-April 2004), Corporate
                                 Vice President (May 1999-April 2001) and
                                 Assistant General Counsel (May 1999-December
                                 2000) of UBS Financial Services Inc. (formerly,
                                 PaineWebber Incorporated). An officer of 91
                                 portfolios in the OppenheimerFunds complex.

KATHLEEN T. IVES,                Vice President (since June 1998) and Senior
Assistant Secretary              Counsel and Assistant Secretary (since October
(since 2001)                     2003) of the Manager; Vice President (since
Age: 40                          1999) and Assistant Secretary (since October
                                 2003) of the Distributor; Assistant Secretary
                                 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
Assistant Secretary              Counsel of the Manager (since September 2004);
(since 2004)                     First Vice President (2000-September 2004),
Age: 42                          Director (2000-September 2004) and Vice
                                 President (1998-2000) of Merrill Lynch
                                 Investment Management. An officer of 91
                                 portfolios in the OppenheimerFunds complex.

THE FUND'S STATEMENT OF ADDITIONAL INFORMATION CONTAINS ADDITIONAL INFORMATION
ABOUT THE FUND'S TRUSTEES AND OFFICERS AND IS AVAILABLE WITHOUT CHARGE UPON
REQUEST, BY CALLING 1.800.525.7048.


              49 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



- --------------------------------------------------------------------------------

FINANCIAL STATEMENTS FOR OPPENHEIMER MAIN STREET FUND
(UNDERLYING FUND)

53   Statement of Investments

64   Statement of Assets and Liabilities

66   Statement of Operations

68   Statements of Changes in Net Assets

69   Financial Highlights

74   Notes to Financial Statements

84   Report of Independent Registered Public Accounting Firm


              52 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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


              53 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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
- --------------------------------------------------------------------------------
Office Max, 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


              54 | OPPENHEIMER PRINCIPAL PROTECTED 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
- --------------------------------------------------------------------------------


              55 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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


              56 | OPPENHEIMER PRINCIPAL PROTECTED 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


              57 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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


              58 | OPPENHEIMER PRINCIPAL PROTECTED 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


              59 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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


              60 | OPPENHEIMER PRINCIPAL PROTECTED 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


              61 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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

                                                    PRINICPAL             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
                                                  ==============================


              62 | OPPENHEIMER PRINCIPAL PROTECTED 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.


              63 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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
                                                                ================


              64 | OPPENHEIMER PRINCIPAL PROTECTED 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.


              65 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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


              66 | OPPENHEIMER PRINCIPAL PROTECTED 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.


              67 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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.


              68 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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.


              69 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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.


              70 | OPPENHEIMER PRINCIPAL PROTECTED 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.


              71 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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.


              72 | OPPENHEIMER PRINCIPAL PROTECTED 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.


              73 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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


              74 | OPPENHEIMER PRINCIPAL PROTECTED 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.


              75 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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:


              76 | OPPENHEIMER PRINCIPAL PROTECTED 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


              77 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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)
                           ==============================================================



              78 | OPPENHEIMER PRINCIPAL PROTECTED 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.


              79 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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.


              80 | OPPENHEIMER PRINCIPAL PROTECTED 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


              81 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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.


              82 | OPPENHEIMER PRINCIPAL PROTECTED 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.


              83 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND



OPPENHEIMER MAIN STREET FUND (UNDERLYING 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


              84 | OPPENHEIMER PRINCIPAL PROTECTED 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 Trustees 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 $13,000 in fiscal 2006 and $12,250 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 $1,574 for 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 $4,199 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 Principal Protected Trust


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