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 811-21561

                    Oppenheimer Principal Protected Trust III
                    -----------------------------------------
               (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 31
                                                ---------

                      Date of reporting period: 02/29/2008
                                                ----------



ITEM 1.  REPORTS TO STOCKHOLDERS.

   FEBRUARY 29, 2008
- --------------------------------------------------------------------------------

       Oppenheimer                                            Management
       Principal Protected                                   Commentaries
       Main Street Fund III R                                    and
                                                              Semiannual
                                                                Report

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

             MANAGEMENT COMMENTARIES

                   An Interview with Your Fund's Managers

                   Listing of Top Holdings

             SEMIANNUAL REPORT

                   Listing of Investments

                   Financial Statements

                                                   [OPPENHEIMERFUNDS LOGO]


TOP HOLDINGS AND ALLOCATIONS
- --------------------------------------------------------------------------------

OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III R PORTFOLIO ALLOCATION

[PIE CHART]

  
                        
  Fixed Income           47.6%
  U.S. Equity Fund       24.5
  Cash Equivalents       19.6*
  Money Market            8.3
  

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.

*The Fund lends its portfolio securities from time to time in order to earn
additional income. The Fund's cash equivalent holdings at period end represent
the Fund's investment of collateral it has received for securities currently on
loan.

Portfolio holdings and allocations are subject to change. Percentages are as of
February 29, 2008, and are based on the total market value of investments.


                                                                 
OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
TOP TEN COMMON STOCK INDUSTRIES
- ----------------------------------------------------------------------------
Oil, Gas & Consumable Fuels                                         13.3%
- ----------------------------------------------------------------------------
Computers & Peripherals                                              8.0
- ----------------------------------------------------------------------------
Diversified Financial Services                                       6.1
- ----------------------------------------------------------------------------
Insurance                                                            6.0
- ----------------------------------------------------------------------------
Software                                                             5.3
- ----------------------------------------------------------------------------
Industrial Conglomerates                                             4.8
- ----------------------------------------------------------------------------
Communications Equipment                                             4.7
- ----------------------------------------------------------------------------
Semiconductors & Semiconductor Equipment                             4.7
- ----------------------------------------------------------------------------
Health Care Providers & Services                                     4.2
- ----------------------------------------------------------------------------
Media                                                                4.2


Portfolio holdings and allocations are subject to change. Percentages are as of
February 29, 2008, and are based on net assets.

            12 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III




                                                                  
OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
TOP TEN COMMON STOCK HOLDINGS
- ----------------------------------------------------------------------------
Exxon Mobil Corp.                                                    5.2%
- ----------------------------------------------------------------------------
General Electric Co.                                                 3.3
- ----------------------------------------------------------------------------
Microsoft Corp.                                                      3.2
- ----------------------------------------------------------------------------
Hewlett-Packard Co.                                                  2.9
- ----------------------------------------------------------------------------
International Business Machines Corp.                                2.3
- ----------------------------------------------------------------------------
QUALCOMM, Inc.                                                       2.3
- ----------------------------------------------------------------------------
Bank of America Corp.                                                2.3
- ----------------------------------------------------------------------------
JPMorgan Chase & Co.                                                 2.3
- ----------------------------------------------------------------------------
Chevron Corp.                                                        2.3
- ----------------------------------------------------------------------------
American International Group, Inc.                                   2.0


Portfolio holdings and allocations are subject to change. Percentages are as of
February 29, 2008, and are based on net assets.

For up-to-date Top 10 Fund holdings, please visit www.oppenheimerfunds.com.


                                                                 
OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
SECTOR ALLOCATION
- ---------------------------------------------------------------------------
Information Technology                                              27.0%
- ----------------------------------------------------------------------------
   Computers & Peripherals                                           8.0
- ----------------------------------------------------------------------------
   Software                                                          5.3
- ----------------------------------------------------------------------------
   Communications Equipment                                          4.7
- ----------------------------------------------------------------------------
   Semiconductors & Semiconductor Equipment                          4.7
- ----------------------------------------------------------------------------
   Internet Software & Services                                      1.9
- ----------------------------------------------------------------------------
   IT Services                                                       1.6
- ----------------------------------------------------------------------------
   Electronic Equipment & Instruments                                0.5
- ----------------------------------------------------------------------------
   Office Electronics                                                0.3
- ----------------------------------------------------------------------------
Financials                                                          19.0
- ----------------------------------------------------------------------------
Energy                                                              16.2
- ----------------------------------------------------------------------------
Industrials                                                         10.7
- ----------------------------------------------------------------------------
Health Care                                                          9.0
- ----------------------------------------------------------------------------
Consumer Discretionary                                               6.7
- ----------------------------------------------------------------------------
Consumer Staples                                                     4.5
- ----------------------------------------------------------------------------
Materials                                                            4.2
- ----------------------------------------------------------------------------
Telecommunication Services                                           2.6
- ----------------------------------------------------------------------------
Utilities                                                            0.1


Portfolio holdings and allocations are subject to change. Percentages are as of
February 29, 2008, and are based on the total market value of common stocks.

            13 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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

      Total returns include changes in share price and reinvestment of dividends
      and capital gains distributions in a hypothetical investment for the
      periods shown. Cumulative total returns are not annualized. The Fund's
      total returns shown do not reflect the deduction of income taxes on an
      individual's investment. Taxes may reduce your actual investment returns
      on income or gains paid by the Fund or any gains you may realize if you
      sell your shares.

      INVESTORS SHOULD CONSIDER THE FUND'S INVESTMENT OBJECTIVES, RISKS, AND
      OTHER CHARGES AND EXPENSES CAREFULLY BEFORE INVESTING. THE FUND'S
      PROSPECTUS CONTAINS THIS AND OTHER INFORMATION ABOUT THE FUND, AND MAY BE
      OBTAINED BY ASKING YOUR FINANCIAL ADVISOR, CALLING US AT 1.800.525.7048 OR
      VISITING OUR WEBSITE AT WWW.OPPENHEIMERFUNDS.COM. READ THE PROSPECTUS
      CAREFULLY BEFORE INVESTING.

      The Fund's investment strategy and focus can change over time. The mention
      of specific fund holdings does not constitute a recommendation by
      OppenheimerFunds, Inc.

      The Fund has entered into a warranty agreement (the "Warranty") with
      Merrill Lynch Bank USA (the "Warranty Provider") which attempts to make
      sure that the value of each shareholder's account on the maturity date
      (December 16, 2011) will be at least equal to a shareholder's original
      investment (reduced by any adjustments to the warranty amount permitted by
      the Warranty, 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, not the
      shareholders. The Warranty is dependent on the financial ability of the
      Warranty Provider to make payment to the Fund on the Maturity Date. 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
      shareholders can lose money on shares unless redeemed on the Maturity
      Date. 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 Warranty increases the

            14 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



      Fund's expenses that shareholders pay and could lower Fund performance.
      Shareholders must redeem their shares in the Fund on, and only on, the
      Maturity Date (expected to be December 16, 2011) 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 Warranty. After the Maturity Date, shares
      of the Fund will not be covered under the terms of the 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 or
      exchange 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 (primarily Treasury
      STRIPS) 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, 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 Treasury STRIPS) that the
      Fund invests in do not 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

            15 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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

      invests in do not pay interest income until maturity. However, the Fund is
      required to accrue and declare a dividend on such 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 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.

      All investments have risks to some degree. Stocks and S&P 500 Index
      Futures fluctuate in price and their volatility at times may be great. If
      the issuer of an S&P 500 Index Future does not pay the amount due, the
      Fund can lose money on the investment. All investments have risks to some
      degree. Stocks fluctuate in price and their volatility at times may be
      great. While principal and interest payments on U.S. Treasury securities
      are guaranteed by the U.S. Government, the price of such securities will
      fluctuate with changes in prevailing interest rates. Zero-coupon U.S.
      Government securities are subject to greater fluctuations in price from
      interest rate changes than typical debt securities that pay interest on a
      regular basis. Investors should be aware that principal protected funds
      generally carry higher fees and expenses than non-protected funds.

      The Fund offered its shares to the public from October 7, 2004 to December
      10, 2004. From December 16, 2004, and until December 16, 2011, 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.

            16 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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 applicable); 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
      February 29, 2008.

      ACTUAL EXPENSES. The first section of the table provides information about
      actual account values and actual expenses. You may use the information in
      this section 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 first section under the heading entitled "Expenses Paid
      During Period" to estimate the expenses you paid on your account during
      this period.

      HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES. The second section of the
      table provides information about hypothetical account values and
      hypothetical expenses based on the Fund's actual expense ratio for each
      class of shares, and an assumed rate of return of 5% per year for each
      class before expenses, which is not the 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

            17 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



FUND EXPENSES Continued
- --------------------------------------------------------------------------------

      the Statement of Additional Information). Therefore, the "hypothetical"
      section of the table is useful in comparing ongoing costs only, and will
      not help you determine the relative total costs of owning different funds.
      In addition, if these transactional costs were included, your costs would
      have been higher.



                                             BEGINNING              ENDING                   EXPENSES
                                             ACCOUNT                ACCOUNT                  PAID DURING
                                             VALUE                  VALUE                    6 MONTHS ENDED
ACTUAL                                       SEPTEMBER 1, 2007      FEBRUARY 29, 2008        FEBRUARY 29, 2008
- ---------------------------------------------------------------------------------------------------------------
                                                                                    
Class A                                         $   1,000.00           $     948.70             $    5.93
- ---------------------------------------------------------------------------------------------------------------
Class B                                             1,000.00                 944.80                 10.01
- ---------------------------------------------------------------------------------------------------------------
Class C                                             1,000.00                 945.30                  9.58
- ---------------------------------------------------------------------------------------------------------------
Class N                                             1,000.00                 948.00                  6.71

HYPOTHETICAL
(5% return before expenses)
- ---------------------------------------------------------------------------------------------------------------
Class A                                             1,000.00               1,018.80                  6.14
- ---------------------------------------------------------------------------------------------------------------
Class B                                             1,000.00               1,014.62                 10.37
- ---------------------------------------------------------------------------------------------------------------
Class C                                             1,000.00               1,015.07                  9.92
- ---------------------------------------------------------------------------------------------------------------
Class N                                             1,000.00               1,018.00                  6.95


Expenses are equal to the Fund's annualized expense ratio for that class,
multiplied by the average account value over the period, multiplied by 182/366
(to reflect the one-half year period). Those annualized expense ratios,
excluding indirect expenses from affiliated funds, based on the 6-month period
ended February 29, 2008 are as follows:



CLASS        EXPENSE RATIOS
- ---------------------------
          
Class A           1.22%
- ---------------------------
Class B           2.06
- ---------------------------
Class C           1.97
- ---------------------------
Class N           1.38


The expense ratios reflect reduction to custodian expenses and 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 and reduction to
custodian expenses, if applicable.

            18 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



STATEMENT OF INVESTMENTS February 29, 2008/ Continued
- --------------------------------------------------------------------------------



                                                                                     SHARES         VALUE
- -------------------------------------------------------------------------------------------------------------
                                                                                        
- -------------------------------------------------------------------------------------------------------------
INVESTMENT COMPANIES--40.5% 1
- -------------------------------------------------------------------------------------------------------------

MONEY MARKET FUND--10.2%
Oppenheimer Institutional Money Market Fund, Cl. E, 3.99% 2                       5,645,425   $  5,645,425
- -------------------------------------------------------------------------------------------------------------
U.S. EQUITY-30.3%
Oppenheimer Main Street Fund, Cl. Y
                                                                                    504,910     16,697,372
                                                                                              ---------------
Total Investment Companies (Cost $23,478,845)                                                   22,342,797




                                                                                  PRINCIPAL
                                                                                     AMOUNT
- -------------------------------------------------------------------------------------------------------------
                                                                                        
- -------------------------------------------------------------------------------------------------------------
U.S. GOVERNMENT OBLIGATIONS--58.8%
- -------------------------------------------------------------------------------------------------------------

U.S. Treasury Bonds, STRIPS, 2.97%, 2/15/12 3,4                                 $14,200,000     12,958,339
- -------------------------------------------------------------------------------------------------------------
U.S.Treasury Nts, STRIPS, 3.79%, 2/1 5/12 3,4                                    21,200,000     19,467,536
                                                                                              ---------------
Total U.S. Government Obligations (Cost $30,910,239)                                            32,425,875
- -------------------------------------------------------------------------------------------------------------
Total Investments, at Value (excluding Investments Purchased with
Cash Collateral from Securities Loaned) (Cost $54,389,084)                                      54,768,672

- -------------------------------------------------------------------------------------------------------------
INVESTMENTS PURCHASED WITH CASH COLLATERAL FROM SECURITIES LOANED--24.2% 5
- -------------------------------------------------------------------------------------------------------------

JOINT REPURCHASE AGREEMENTS--24.2%
Undivided interest of 0.08% in joint repurchase agreement (Principal
Amount/Value $1,250,000,000, with a maturity value of $1,250,322,917) with
Citigroup Global Markets, Inc., 3.10%, dated 2/29/08, to be repurchased
at $1,000,258 on 3/3/08, collateralized by U.S. Agency Mortgages, 0%-8.875%,
3/7/08-1/15/38, with a value of $1,275,000,444                                    1,000,000      1,000,000
- -------------------------------------------------------------------------------------------------------------
Undivided interest of 0.12% in joint repurchase agreement (Principal
Amount/Value $2,000,000,000, with a maturity value of $2,000,530,000) with
BNP Paribas Securities Corp., 3.18%, dated 2/29/08, to be repurchased
at $2,341,206 on 3/3/08, collateralized by U.S. Agency Mortgages, 0%-6.50%,
2/1/34-3/1/38, with a value of $2,040,000,000                                     2,340,586      2,340,586
- -------------------------------------------------------------------------------------------------------------
Undivided interest of 0.13% in joint repurchase agreement (Principal
Amount/Value $2,000,000,000, with a maturity value of $2,000,528,333) with
Bank of America NA, 3.17%, dated 2/29/08, to be repurchased at $2,500,660
on 3/3/08, collateralized by U.S. Agency Mortgages, 5%-5.50%, 6/1/33-1/1/38,
with a value of $2,040,000,000                                                    2,500,000      2,500,000
- -------------------------------------------------------------------------------------------------------------
Undivided interest of 0.23% in joint repurchase agreement (Principal
Amount/Value $1,100,000,000, with a maturity value of $1,100,256,667) with
Barclays Capital, 2.80%, dated 2/29/08, to be repurchased at $2,500,583
on 3/3/08, collateralized by Government National Mortgage Assn., 0%-9%,
7/15/09-2/15/38, with a value of $1,122,000,000                                   2,500,000      2,500,000
- -------------------------------------------------------------------------------------------------------------
Undivided interest of 0.25% in joint repurchase agreement (Principal
Amount/Value $1,000,000,000, with a maturity value of $1,000,264,167) with
Banc of America Securities LLC, 3.17%, dated 2/29/08, to be repurchased
at $2,500,660 on 3/3/08, collateralized by U.S. Agency Mortgages, 0%-11%,
9/25/09-7/1/37, with a value of $1,020,000,000                                    2,500,000      2,500,000


            19 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



STATEMENT OF INVESTMENTS Unaudited / Continued
- --------------------------------------------------------------------------------



                                                                                  PRINCIPAL
                                                                                     AMOUNT          VALUE
- -------------------------------------------------------------------------------------------------------------
                                                                                        
JOINT REPURCHASE AGREEMENTS Continued
Undivided interest of 10% in joint repurchase agreement (Principal
Amount/Value $25,000,000, with a maturity value of $25,006,719) with
DLJ/Pershing Division, 3.225%, dated 2/29/08, to be repurchased at
$2,500,672 on 3/3/08, collateralized by U.S. Agency Mortgages, 3.50%-6.886%
5/15/17-5/16/37, with a value of $25,500,000                                    $ 2,500,000   $  2,500,000
                                                                                              ---------------

Total Investments Purchased with Cash Collateral from Securities Loaned
(Cost $13,340,586)                                                                              13,340,586
- -------------------------------------------------------------------------------------------------------------
TOTAL INVESTMENTS, AT VALUE (COST $67,729,670)                                        123.5%    68,109,258
- -------------------------------------------------------------------------------------------------------------
LIABILITIES IN EXCESS OF OTHER ASSETS
NET ASSETS                                                                            (23.5)   (12,963,793)
                                                                                -----------------------------

                                                                                      100.0%  $ 55,145,465
                                                                                =============================


FOOTNOTES TO STATEMENT OF INVESTMENTS

1. Is or was an affiliate, as defined in the Investment Company Act of 1940, at
or during the period ended February 29, 2008, by virtue of the Fund owning at
least 5% of the voting securities of the issuer or as a result of the Fund and
the issuer having the same investment adviser. Transactions during the period in
which the issuer was an affiliate are as follows:
Additions



                                                SHARES             GROSS           GROSS               SHARES
                                       AUGUST 31, 2007         ADDITIONS      REDUCTIONS    FEBRUARY 29, 2008
- ----------------------------------------------------------------------------------------------------------------
                                                                                
Oppenheimer Institutional Money
Market Fund, Cl. E                           5,355,428        23,914,190      23,624,193            5,645,425
Oppenheimer Main Street Fund, Cl. Y          1,046,720           631,602       1,173,412              504,910




                                                                                DIVIDEND             REALIZED
                                                                   VALUE          INCOME                 GAIN
- ----------------------------------------------------------------------------------------------------------------
                                                                                   
Oppenheimer Institutional Money
Market Fund, Cl. E                                       $     5,645,425   $     149,390    $              --
Oppenheimer Main Street Fund, Cl. Y                           16,697,372         465,602              588,381
                                                         -------------------------------------------------------
                                                         $    22,342,797   $     614,992    $         588,381
                                                         =======================================================


2. Rate shown is the 7-day yield as of February 29, 2008.

3. Zero coupon bond reflects effective yield on the date of purchase.

4. Partial or fully-loaned security. See Note 6 of accompanying Notes.

5. 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 6 of
accompanying Notes.

- --------------------------------------------------------------------------------
FUTURES CONTRACTS AS OF FEBRUARY 29, 2008 ARE AS FOLLOWS:
- --------------------------------------------------------------------------------



                               BUY/  NUMBER OF    EXPIRATION                      UNREALIZED
CONTRACT DESCRIPTION          SELL   CONTRACTS          DATE         VALUE      DEPRECIATION
                                                                 
- --------------------------------------------------------------------------------------------
Standard & Poor's 500 Index     Buy          14      6/19/08   $ 4,666,550      $   173,993


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            20 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



STATEMENT OF ASSETS AND LIABILITIES Unaudited
- --------------------------------------------------------------------------------

February 29, 2008


                                                                  
- -----------------------------------------------------------------------------------
ASSETS
- -----------------------------------------------------------------------------------

Investments, at value -- see accompanying statement of investments:
Unaffiliated companies (cost $ 44,250,825)                           $ 45,766,461
Affiliated companies (cost $ 23,478,845)                               22,342,797
                                                                     --------------
                                                                       68,109,258
- -----------------------------------------------------------------------------------
Cash used for collateral on futures                                       392,000
- -----------------------------------------------------------------------------------
Receivables and other assets:
Investments sold                                                          250,000
Interest and dividends                                                     16,939
Other                                                                       6,639
                                                                     --------------
Total assets                                                           68,774,836

- -----------------------------------------------------------------------------------
LIABILITIES
- -----------------------------------------------------------------------------------

Bank overdraft                                                             32,915
- -----------------------------------------------------------------------------------
Return of collateral for securities loaned                             13,340,586
- -----------------------------------------------------------------------------------
Payables and other liabilities:
Futures margins                                                           122,850
Warranty agreement fees                                                    55,068
Shareholder communications                                                 33,029
Distribution and service plan fees                                         22,223
Transfer and shareholder servicing agent fees                               4,106
Shares of beneficial interest redeemed                                      3,014
Trustees' compensation                                                      1,772
Other                                                                      13,808
                                                                     --------------
Total liabilities                                                      13,629,371

- -----------------------------------------------------------------------------------
NET ASSETS                                                           $ 55,145,465
                                                                     ==============

- -----------------------------------------------------------------------------------
COMPOSITION OF NET ASSETS
- -----------------------------------------------------------------------------------

Par value of shares of beneficial interest                           $      1,805
- -----------------------------------------------------------------------------------
Additional paid-in capital                                             52,381,391
- -----------------------------------------------------------------------------------
Accumulated net investment loss                                        (1,064,128)
- -----------------------------------------------------------------------------------
Accumulated net realized gain on investments                            3,620,802
- -----------------------------------------------------------------------------------
Net unrealized appreciation on investments                                205,595
                                                                     --------------
NET ASSETS                                                           $ 55,145,465
                                                                     ==============


            21 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



STATEMENT OF ASSETS AND LIABILITIES Unaudited / Continued
- --------------------------------------------------------------------------------


                                                                            
- ------------------------------------------------------------------------------------------
NET ASSET VALUE PER SHARE
- ------------------------------------------------------------------------------------------
Class A Shares:
Net asset value and redemption price per share (based on net
assets of $ 26,153,383 and 855,589 shares of beneficial interest outstanding)  $   30.57
Maximum offering price per share (net asset value plus sales charge of 5.75%
of offering price)                                                             $   32.44
- ------------------------------------------------------------------------------------------
Class B Shares:
Net asset value, redemption price (excludes applicable contingent deferred
sales charge) and offering price per share (based on net
assets of $15,300,561 and 501,239 shares of beneficial interest outstanding)   $   30.53
- ------------------------------------------------------------------------------------------
Class C Shares:
Net asset value, redemption price (excludes applicable contingent deferred
sales charge) and offering price per share (based on net
assets of $12,751,003 and 417,265 shares of beneficial interest outstanding)   $   30.56
- ------------------------------------------------------------------------------------------
Class N Shares:
Net asset value, redemption price (excludes applicable contingent deferred
sales charge) and offering price per share (based on net
assets of $940,518 and 30,808 shares of beneficial interest outstanding)       $   30.53
- ------------------------------------------------------------------------------------------


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            22 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



STATEMENT OF OPERATIONS Unaudited
- --------------------------------------------------------------------------------

For the Six Months Ended February 29, 2008


                                                           
- -------------------------------------------------------------------------
INVESTMENT INCOME
- -------------------------------------------------------------------------

Dividends from affiliated companies                           $ 614,992
- -------------------------------------------------------------------------
Interest                                                        319,831
- -------------------------------------------------------------------------
Portfolio lending fees                                           10,256
- -------------------------------------------------------------------------
Other income                                                         24
                                                              -----------
Total investment income                                         945,103

- -------------------------------------------------------------------------
EXPENSES
- -------------------------------------------------------------------------

Management fees                                                 147,714
- -------------------------------------------------------------------------
Distribution and service plan fees:
Class A                                                          34,596
Class B                                                          80,964
Class C                                                          68,861
Class N                                                           2,050
- -------------------------------------------------------------------------
Transfer and shareholder servicing agent fees:
Class A                                                           8,536
Class B                                                           8,675
Class C                                                           3,905
Class N                                                             233
- -------------------------------------------------------------------------
Shareholder communications:
Class A                                                           5,937
Class B                                                           6,119
Class C                                                           2,867
Class N                                                             219
- -------------------------------------------------------------------------
Warranty agreement fees                                         177,267
- -------------------------------------------------------------------------
Trustees' compensation                                            3,528
- -------------------------------------------------------------------------
Administration service fees                                         750
- -------------------------------------------------------------------------
Custodian fees and expenses                                         148
- -------------------------------------------------------------------------
Other                                                            16,092
                                                              -----------
Total expenses                                                  568,461
Less reduction to custodian expenses                               (113)
Less waivers and reimbursements of expenses                     (88,453)
                                                              -----------
Net expenses                                                    479,895

- -------------------------------------------------------------------------
NET INVESTMENT INCOME                                           465,208


            23 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



STATEMENT OF OPERATIONS Unaudited / Continued
- --------------------------------------------------------------------------------


                                                                 
- ---------------------------------------------------------------------------------
REALIZED AND UNREALIZED GAIN (LOSS)
- ---------------------------------------------------------------------------------

Net realized gain (loss) on:
Investments:
    Unaffiliated companies                                          $   194,715
    Affiliated companies                                                588,381
Distributions received from affiliated companies                      3,750,843
Closing and expiration of futures contracts                            (655,257)
                                                                    -------------
Net realized gain                                                     3,878,682
- ---------------------------------------------------------------------------------
Net change in unrealized appreciation (depreciation) on:
Investments                                                          (7,586,811)
Futures contracts                                                        64,832
                                                                    -------------
Net change in unrealized appreciation                                (7,521,979)

- ---------------------------------------------------------------------------------
NET DECREASE IN NET ASSETS RESULTING FROM OPERATIONS                $(3,178,089)
                                                                    =============


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            24 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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



                                                                     SIX MONTHS
                                                                          ENDED
                                                              FEBRUARY 29, 2008        YEAR ENDED
                                                                     (UNAUDITED)  AUGUST 31, 2007
- ---------------------------------------------------------------------------------------------------
                                                                            
- ---------------------------------------------------------------------------------------------------
OPERATIONS
- ---------------------------------------------------------------------------------------------------

Net investment income                                          $        465,208   $       489,670
- ---------------------------------------------------------------------------------------------------
Net realized gain                                                     3,878,682         2,945,360
- ---------------------------------------------------------------------------------------------------
Net change in unrealized appreciation                                (7,521,979)        3,434,833
                                                               ------------------------------------
Net increase (decrease) in net assets resulting from
operation                                                            (3,178,089)        6,869,863

- ---------------------------------------------------------------------------------------------------
DIVIDENDS AND/OR DISTRIBUTIONS TO SHAREHOLDERS
- ---------------------------------------------------------------------------------------------------

Dividends from net investment income:
Class A                                                                (846,595)         (534,201)
Class B                                                                (343,461)         (150,553)
Class C                                                                (309,113)         (128,262)
Class N                                                                 (28,320)          (15,712)
                                                               ------------------------------------
                                                                     (1,527,489)         (828,728)
- ---------------------------------------------------------------------------------------------------
Distributions from net realized gain:
Class A                                                                (500,157)               --
Class B                                                                (291,589)               --
Class C                                                                (247,566)               --
Class N                                                                 (17,649)               --
                                                               ------------------------------------
                                                                     (1,056,961)               --

- ---------------------------------------------------------------------------------------------------
BENEFICIAL INTEREST TRANSACTIONS
- ---------------------------------------------------------------------------------------------------

Net increase (decrease) in net assets resulting from
beneficial interest transactions:
Class A                                                                (512,550)       (6,677,673)
Class B                                                                 (60,884)       (2,947,900)
Class C                                                                (383,450)       (3,679,172)
Class N                                                                  11,041          (104,407)
                                                               ------------------------------------
                                                                       (945,843)      (13,409,152)

- ---------------------------------------------------------------------------------------------------
NET ASSETS
- ---------------------------------------------------------------------------------------------------

Total decrease                                                       (6,708,382)       (7,368,017)
- ---------------------------------------------------------------------------------------------------
Beginning of period                                                  61,853,847        69,221,864
                                                               ------------------------------------
End of period (including accumulated net investment loss of
$1,064,128 and $1,847, respectively)                           $     55,145,465   $    61,853,847
                                                               ====================================


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            25 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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



                                                                    SIX MONTHS
                                                                         ENDED
                                                             FEBRUARY 29, 2008                     YEAR ENDED AUGUST 31,
CLASS A                                                             (UNAUDITED)          2007        2006         2005 1
- --------------------------------------------------------------------------------------------------------------------------
                                                                                                 
- --------------------------------------------------------------------------------------------------------------------------
PER SHARE OPERATING DATA
- --------------------------------------------------------------------------------------------------------------------------

Net asset value, beginning of period                                $    33.86   $      30.99   $    30.48   $     30.00
- --------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment income 2                                                    .32            .38          .47           .25
Net realized and unrealized gain (loss)                                  (2.01)          3.03          .58           .28
                                                                    ------------------------------------------------------
Total from investment operations                                         (1.69)          3.41         1.05           .53
- --------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions to shareholders:
Dividends from net investment income                                     (1.01)          (.54)        (.54)         (.05)
Distributions from net realized gain                                      (.59)            --           --            --
                                                                    ------------------------------------------------------
Total dividends and/or distributions to shareholders                     (1.60)          (.54)        (.54)         (.05)
- --------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period                                      $    30.57   $      33.86   $    30.99   $     30.48
                                                                    ======================================================

- --------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 3                                       (5.13)%        11.09%        3.48%          1.76%
- --------------------------------------------------------------------------------------------------------------------------

- --------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- --------------------------------------------------------------------------------------------------------------------------

Net assets, end of period (in thousands)                            $    26,153   $     29,470   $   33,229   $    40,981
- --------------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                                   $    28,187   $     31,996   $   37,258   $    36,571
- --------------------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 4
Net investment income                                                     1.98%          1.15%        1.53%          0.93%
Total expenses 5                                                          1.52%          1.55%        1.49%          1.45%
Expenses after payments, waivers and/or reimbursements and
reduction to custodian expenses                                           1.22%          1.19%        1.22%          1.20%
- --------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                                                    133%           130%         133%            37%


1.For the period from October 7, 2004 (commencement of operations) to August
31, 2005.

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

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

4.Annualized for periods less than one full year.

5. Total expenses paid including all underlying fund expenses were as follows:

        
                                         
        Six Months Ended February 29, 2008  1.82%
        Year Ended August 31, 2007          1.91%
        Year Ended August 31, 2006          1.76%
        Period Ended August 31, 2005        1.66%
        

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            26 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III





                                                                   SIX MONTHS
                                                                        ENDED
                                                            FEBRUARY 29, 2008             YEAR ENDED AUGUST 31,
CLASS B                                                           (UNAUDITED)        2007       2006     2005 1
- -----------------------------------------------------------------------------------------------------------------
                                                                                           
- -----------------------------------------------------------------------------------------------------------------
PER SHARE OPERATING DATA
- -----------------------------------------------------------------------------------------------------------------

Net asset value, beginning of period                              $     33.64   $   30.80   $  30.29   $  30.00
- -----------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment income 2                                                   .19         .09        .21        .03
Net realized and unrealized gain (loss)                                 (2.01)       3.02        .58        .28
                                                                  -----------------------------------------------
Total from investment operations                                        (1.82)       3.11        .79        .31
- -----------------------------------------------------------------------------------------------------------------
Dividends and/or distributions to shareholders:
Dividends from net investment income                                     (.70)       (.27)      (.28)      (.02)
Distributions from net realized gain                                     (.59)         --         --         --
                                                                  -----------------------------------------------
Total dividends and/or distributions to shareholders                    (1.29)       (.27)      (.28)      (.02)
- -----------------------------------------------------------------------------------------------------------------

Net asset value, end of period                                    $     30.53   $   33.64   $  30.80   $   30.29
                                                                  ===============================================

- -----------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 3                                      (5.52)%     10.13%      2.62%      1.03%
- -----------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- -----------------------------------------------------------------------------------------------------------------

Net assets, end of period (in thousands)                          $    15,301   $  16,903   $ 18,246   $ 20,856
- -----------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                                 $    16,268   $  17,872   $ 19,663   $ 18,576
- -----------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 4
Net investment income                                                    1.16%       0.28%      0.70%      0.10%
Total expenses 5                                                         2.36%       2.42%      2.31%      2.27%
Expenses after payments, waivers and/or reimbursements
and reduction to custodian expenses                                      2.06%       2.06%      2.04%      2.02%
- -----------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                                                   133%        130%       133%        37%


1.For the period from October 7, 2004 (commencement of operations) to August 31,
2005.

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

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

4.Annualized for periods less than one full year.

5.Total expenses paid including all underlying fund expenses were as follows:

        
                                          
        Six Months Ended February 29, 2008   2.66%
        Year Ended August 31, 2007           2.78%
        Year Ended August 31, 2006           2.58%
        Period Ended August 31, 2005         2.48%
        

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            27 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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



                                                                    SIX MONTHS
                                                                         ENDED
                                                             FEBRUARY 29, 2008               YEAR ENDED AUGUST 31,
CLASS C                                                            (UNAUDITED)        2007       2006       2005 1
- ---------------------------------------------------------------------------------------------------------------------
                                                                                             
- ---------------------------------------------------------------------------------------------------------------------
PER SHARE OPERATING DATA
- ---------------------------------------------------------------------------------------------------------------------

Net asset value, beginning of period                               $     33.70    $   30.82   $  30.31   $    30.00
- ---------------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment income 2                                                    .20          .13        .24          .05
Net realized and unrealized gain (loss)                                  (2.01)        3.02        .57          .28
                                                                   --------------------------------------------------
Total from investment operations                                         (1.81)        3.15        .81          .33
- ---------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions to shareholders:
Dividends from net investment income                                      (.74)        (.27)      (.30)        (.02)
Distributions from net realized gain                                      (.59)          --         --           --
                                                                   --------------------------------------------------
Total dividends and/or distributions to shareholders                     (1.33)        (.27)      (.30)        (.02)
- ---------------------------------------------------------------------------------------------------------------------
Net asset value, end of period                                     $     30.56    $   33.70   $  30.82   $    30.31
                                                                   ==================================================

- ---------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 3                                       (5.47)%      10.24%      2.69%        1.11%
- ---------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- ---------------------------------------------------------------------------------------------------------------------

Net assets, end of period (in thousands)                           $    12,751    $   14,454   $ 16,709   $   21,414
- ---------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                                  $    13,823    $   15,427   $ 19,229   $   18,591
- ---------------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 4
Net investment income                                                     1.23%        0.41%      0.80%        0.17%
Total expenses 5                                                          2.27%        2.30%      2.24%        2.21%
Expenses after payments, waivers and/or reimbursements and
reduction to custodian expenses                                           1.97%        1.94%      1.97%        1.96%
- ---------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                                                    133%         130%       133%          37%


1.For the period from October 7, 2004 (commencement of operations) to August 31,
2005.

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

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

4.Annualized for periods less than one full year.

5.Total expenses paid including all underlying fund expenses were as follows:

        
                                          
        Six Months Ended February 29, 2008   2.57%
        Year Ended August 31, 2007           2.66%
        Year Ended August 31, 2006           2.51%
        Period Ended August 31, 2005         2.42%
        

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            28 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III





                                                                    SIX MONTHS
                                                                         ENDED
                                                             FEBRUARY 29, 2008                YEAR ENDED AUGUST 31,
CLASS N                                                            (UNAUDITED)         2007        2006      2005 1
- ---------------------------------------------------------------------------------------------------------------------
                                                                                              
- ---------------------------------------------------------------------------------------------------------------------
PER SHARE OPERATING DATA
- ---------------------------------------------------------------------------------------------------------------------

Net asset value, beginning of period                               $     33.79   $    30.92   $   30.43   $   30.00
- ---------------------------------------------------------------------------------------------------------------------

Income (loss) from investment operations:
Net investment income 2                                                    .30          .32         .42         .19
Net realized and unrealized gain (loss)                            $     (2.02)        3.03         .54         .28
                                                                   --------------------------------------------------
Total from investment operations                                         (1.72)        3.35         .96         .47
- ---------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions to shareholders:
Dividends from net investment income                                      (.95)        (.48)       (.47)       (.04)
Distributions from net realized gain                                      (.59)          --          --          --
                                                                   --------------------------------------------------
Total dividends and/or distributions to shareholders                     (1.54)        (.48)       (.47)       (.04)
- ---------------------------------------------------------------------------------------------------------------------
Net asset value, end of period                                     $     30.53   $    33.79   $   30.92   $   30.43
                                                                   ==================================================

- ---------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 3                                       (5.20)%      10.88%       3.19%       1.57%
- ---------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- ---------------------------------------------------------------------------------------------------------------------

Net assets, end of period (in thousands)                           $       940   $    1,027   $   1,038   $   1,438
- ---------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                                  $       987   $    1,057   $   1,167   $   1,269
- ---------------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 4
Net investment income                                                     1.83%        0.97%       1.39%       0.69%
Total expenses 5                                                          1.68%        1.75%       1.74%       1.70%
Expenses after payments, waivers and/or reimbursements
and reduction to custodian expenses                                       1.38%        1.39%       1.47%       1.45%
- ---------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                                                    133%         130%        133%         37%


1.For the period from October 7, 2004 (commencement of operations) to August 31,
2005.

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

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

4.Annualized for periods less than one full year.

5. Total expenses paid including all underlying fund expenses were as follows:

        
                                              
        Six Months Ended February 29, 2008       1.98%
        Year Ended August 31, 2007               2.11%
        Year Ended August 31, 2006               2.01%
        Period Ended August 31, 2005             1.91%
        

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            29 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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

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

Oppenheimer Principal Protected Main Street Fund III (the "Fund"), a series of
Oppenheimer Principal Protected Trust III, 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 adviser is OppenheimerFunds, Inc. (the "Manager").

      Shares of the Fund were offered during the Offering Period (October 7,
2004 to December 10, 2004). Shares are not offered during the Warranty Period
(December 16, 2004 to December 16, 2011) to the Maturity Date (December 16,
2011) 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"), futures contracts on the
S&P 500 Index and certain U.S. government securities. 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.

      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 and Class C 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. 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 90 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

            30 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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 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 Fund calculates the net asset value of each class of
shares based upon the net asset value of the Underlying Fund. For the Underlying
Fund, the net asset value per share for a class of shares 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 trading by dividing the value
of the Underlying Fund's net assets attributable to that class by the number of
shares of that class outstanding on that day. To determine net asset values, the
Underlying Fund's assets are valued primarily on the basis of current market
quotations.

      Long term debt instruments having a remaining maturity in excess of sixty
days will be valued at the mean between the "bid" and "asked" prices. "Money
market-type" debt instruments with remaining maturities of sixty days or less
are valued at cost adjusted by the amortization of discount or premium to
maturity, or amortized cost, which approximates market value.

      Securities held by the Fund and/or an Underlying Fund for which market
quotations are not readily available are valued at their fair value. Securities
whose values have been materially affected by what the Manager identifies as a
significant event occurring before the Fund and/or Underlying 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 Fund and, when applicable, Underlying Fund's Board
of Trustees.

            31 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



NOTES TO FINANCIAL STATEMENTS Unaudited / Continued
- --------------------------------------------------------------------------------

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

INVESTMENT IN OPPENHEIMER INSTITUTIONAL MONEY MARKET FUND. The Fund is permitted
to invest daily available cash balances in an affiliated money market fund. The
Fund may invest the available cash in Class E shares of Oppenheimer
Institutional Money Market Fund ("IMMF") to seek current income while preserving
liquidity. IMMF is a registered open-end management investment company,
regulated as a money market fund under the Investment Company Act of 1940, as
amended. The Manager is also the investment adviser of IMMF. The Fund's
investment in IMMF is included in the Statement of Investments. As a
shareholder, the Fund is subject to its proportional share of IMMF's Class E
expenses, including its management fee. The Manager will waive fees and/or
reimburse Fund expenses in an amount equal to the indirect management fees
incurred through the Fund's investment in IMMF.

- --------------------------------------------------------------------------------
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. If the seller of the agreement defaults and the value of the
collateral declines, or if the seller enters an insolvency proceeding,
realization of the value of the collateral by the Fund may be delayed or
limited.

- --------------------------------------------------------------------------------
INVESTMENTS WITH OFF-BALANCE SHEET RISK. The Fund enters into financial
instrument transactions (such as swaps, futures, options and other derivatives)
that may have off-balance sheet market risk. Off-balance sheet market risk
exists when the maximum potential loss on a particular financial instrument is
greater than the value of such financial instrument, as reflected in the Fund's
Statement of Assets and Liabilities.

- --------------------------------------------------------------------------------
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 Fund files income tax returns in U.S. federal and applicable state
jurisdictions. The statute of limitations on the Fund's tax return filings
generally remain open for the three preceding fiscal reporting period ends.

      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

            32 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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.

      During the fiscal year ended August 31,2007,the Fund utilized $909,112 of
capital loss carryforward to offset capital gains realized in that fiscal year.

The approximate 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 February 29,2008 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.

             
                                                   
             Federal tax cost of securities           $ 68,055,122
             Federal tax cost of other investments       4,840,543
                                                      ------------
             Total federal tax cost                   $ 72,895,665
                                                      ============

             Gross unrealized appreciation            $  1,190,183
             Gross unrealized depreciation              (1,310,040)
                                                      ------------
             Net unrealized depreciation              $   (119,857)
                                                      ============
             

- --------------------------------------------------------------------------------
TRUSTEES' COMPENSATION. The Board of Trustees has adopted a compensation
deferral 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 compensation deferral plan.

- --------------------------------------------------------------------------------
DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS. Dividends and distributions to
shareholders, which are determined in accordance with income tax regulations and
may differ from U.S. generally accepted accounting principles, are recorded on
the ex-dividend date.

            33 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



NOTES TO FINANCIAL STATEMENTS Unaudited / Continued
- --------------------------------------------------------------------------------

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

Income and capital gain distributions, if any, are declared and paid annually or
at other times as deemed necessary by the Manager.

- --------------------------------------------------------------------------------
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 is recognized on an accrual basis. Discount and
premium, which are included in interest income on the Statement of Operations,
are amortized or accreted daily.

- --------------------------------------------------------------------------------
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 accounting
principles generally accepted in the United States of America 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 increases and
decreases in net assets from operations during the reporting period. Actual
results could differ from those estimates.

            34 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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

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



                          SIX MONTHS ENDED FEBRUARY 29, 2008      YEAR ENDED AUGUST 31, 2007
                                      SHARES          AMOUNT          SHARES          AMOUNT
- ----------------------------------------------------------------------------------------------
                                                                     
CLASS A
Dividends and/or
distributions reinvested              40,448     $ 1,273,358          15,480     $   505,080
Redeemed                             (55,178)     (1,785,908)       (217,553)     (7,182,753)
                                     ---------------------------------------------------------
Net decrease                         (14,730)    $  (512,550)       (202,073)    $(6,677,673)
                                     =========================================================

- ----------------------------------------------------------------------------------------------
CLASS B
Dividends and/or
distributions reinvested              19,223     $   605,310           4,403     $   143,615
Redeemed                             (20,443)       (666,194)        (94,367)     (3,091,515)
                                     ---------------------------------------------------------
Net decrease                          (1,220)    $   (60,884)        (89,964)    $(2,947,900)
                                     =========================================================

- ----------------------------------------------------------------------------------------------
CLASS C
Dividends and/or
distributions reinvested              17,046     $   537,285           3,775     $   122,313
Redeemed                             (28,638)       (920,735)       (117,147)     (3,801,485)
                                     ---------------------------------------------------------
Net decrease                         (11,592)    $  (383,450)       (113,372)    $(3,679,172)
                                     =========================================================

- ----------------------------------------------------------------------------------------------
CLASS N
Dividends and/or
distributions reinvested               1,427     $    44,887             471     $    15,379
Redeemed                              (1,015)        (33,846)         (3,635)       (119,786)
                                     ---------------------------------------------------------
Net increase (decrease)                  412     $    11,041          (3,164)    $  (104,407)
                                     =========================================================


- --------------------------------------------------------------------------------
3. PURCHASES AND SALES OF SECURITIES

The aggregate cost of purchases and proceeds from sales of securities,other than
short-term obligations and investments in IMMF,for the six months ended February
29,2008, were as follows:



                                    PURCHASES           SALES
- -------------------------------------------------------------
                                           
Investment securities            $ 26,345,805    $ 46,751,472
U.S. government and government
agency obligations                 44,700,481      24,860,929


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

MANAGEMENT FEES. Under the investment advisory agreement, 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. That fee will apply during the Warranty Period
and the Post-Warranty Period. The management fee shall be reduced to 0.40% per
annum of average annual net assets of the Fund in any month during the Warranty
Period following a month where the Fund's

            35 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



NOTES TO FINANCIAL STATEMENTS Unaudited / Continued
- --------------------------------------------------------------------------------

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

investment in equity securities (including shares of the Underlying Fund) is, on
average, less than 10% of net assets. 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.

- --------------------------------------------------------------------------------
ADMINISTRATION SERVICE FEES. The Fund pays the Manager a fee of $1,500 per year
for preparing and filing the Fund's tax returns.

- --------------------------------------------------------------------------------
TRANSFER AGENT FEES. OppenheimerFunds Services ("OFS"), a division of the
Manager, acts as the transfer and shareholder servicing agent for the Fund. The
Fund pays OFS a per account fee. For the six months ended February 29, 2008, the
Fund paid $22,093 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 (the
"Plan") for Class A shares under Rule 12b-1 of the Investment Company Act of
1940. Under the Plan, the Fund 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 service 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 (the "Plans") for Class B, Class C
and Class N shares under Rule 12b-1 of the Investment Company Act of 1940 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

            36 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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 Plans at December 31,
2007 for Class B, Class C and Class N shares were $357,552, $23,845 and $12,153,
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
SIX MONTHS              RETAINED BY         RETAINED BY         RETAINED BY         RETAINED BY         RETAINED BY
ENDED                   DISTRIBUTOR         DISTRIBUTOR         DISTRIBUTOR         DISTRIBUTOR         DISTRIBUTOR
- ---------------------------------------------------------------------------------------------------------------------
                                                                                       
February 29,2008              $  --            $  3,068           $  12,675               $  --               $  --
- ---------------------------------------------------------------------------------------------------------------------


WAIVERS AND REIMBURSEMENTS OF EXPENSES. The Manager will reimburse the Fund for
expenses equal to the Underlying Fund expenses 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 six months ended February 29, 2008, the Manager reimbursed the Fund $85,441
for such Underlying Fund 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.

      The Manager will waive fees and/or reimburse Fund expenses in an amount
equal to the indirect management fees incurred through the Fund's investment in
IMMF. During the six months ended February 29, 2008, the Manager waived $3,012
for IMMF management fees.

- --------------------------------------------------------------------------------
5. FUTURES CONTRACTS

A futures contract is a commitment to buy or sell a specific amount of a
commodity or financial instrument at a negotiated price on a stipulated future
date. The Fund may buy and sell futures contracts on the Standard and Poor's 500
Composite Stock Price Index. The Fund may also buy or write put or call options
on these futures contracts.

            37 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



NOTES TO FINANCIAL STATEMENTS Unaudited / Continued
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
5. FUTURES CONTRACTS Continued

      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 trading session ending
at, or most recently prior to, the time when the Fund's assets are valued.

      Upon entering into a futures contract, the Fund is required to deposit
either cash or securities (initial margin) in an amount equal to a certain
percentage of the contract value. Subsequent payments (variation margin) are
made or received by the Fund each day. The variation margin payments are equal
to the daily changes in the contract value and are recorded as unrealized gains
and losses.

      Futures contracts are reported on a schedule following the Statement of
Investments. Securities held in collateralized accounts to cover initial margin
requirements on open futures contracts are noted in the Statement of
Investments. Cash held by the broker to cover initial margin requirements on
open futures contracts and the receivable and/or payable for the daily mark to
market for the variation margin are noted in the Statement of Assets and
Liabilities. The net change in unrealized appreciation and depreciation is
reported in the Statement of Operations. Realized gains (losses) are reported in
the Statement of Operations at the closing or expiration of futures contracts.

      Risks of entering into futures contracts (and related options) include the
possibility that there may be an illiquid market where the Fund is unable to
liquidate the contract or enter into an offsetting position and, if used for
hedging purposes, the risk that the price of the contract will correlate
imperfectly with the prices of the Fund's securities.

- --------------------------------------------------------------------------------
6. SECURITIES LENDING

The Fund lends portfolio securities from time to time in order to earn
additional income in the form of fees or interest on securities received as
collateral or the investment of any cash received as collateral. The loans are
secured by collateral (either securities, letters of credit, or cash) in an
amount not less than 100% of the market value of the loaned securities during
the period of the loan. The market value of the loaned securities is determined
at the close of each business day and any additional required collateral is
delivered to the Fund on the next business day. If the borrower defaults on its
obligation to return the securities loaned because of insolvency or other
reasons, the Fund could experience delays and cost in recovering the securities
loaned or in gaining access to the collateral. 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 and recognizes the gain
or loss in the fair value of the securities loaned that may occur during the
term of the loan. The Fund has the right under the lending agreement to recover
the securities from the borrower on demand. As of February 29, 2008, the Fund
had on loan securities valued at $13,303,494. Collateral of $13,340,586 was
received for the loans, all of which was received in cash and subsequently
invested in approved instruments.

            38 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



- --------------------------------------------------------------------------------
7. RECENT ACCOUNTING PRONOUNCEMENT

In September 2006, Financial Accounting Standards Board ("FASB") issued
Statement of Financial Accounting Standards ("SFAS") No. 157, Fair Value
Measurements. This standard establishes a single authoritative definition of
fair value, sets out a framework for measuring fair value and expands
disclosures about fair value measurements. SFAS No. 157 applies to fair value
measurements already required or permitted by existing standards. SFAS No. 157
is effective for financial statements issued for fiscal years beginning after
November 15, 2007, and interim periods within those fiscal years. As of February
29, 2008, the Manager does not believe the adoption of SFAS No. 157 will
materially impact the financial statement amounts; however, additional
disclosures may be required about the inputs used to develop the measurements
and the effect of certain of the measurements on changes in net assets for the
period.

            39 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



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.

            40 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



FINANCIAL STATEMENTS FOR OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
FEBRUARY 29, 2008/UNAUDITED

    
            
    43         Statement of Investments

    53         Statement of Assets and Liabilities

    55         Statement of Operations

    57         Statements of Changes in Net Assets

    58         Financial Highlights

    63         Notes to Financial Statements
    

            42 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF INVESTMENTS February 29, 2008 / Unaudited
- --------------------------------------------------------------------------------



                                                SHARES            VALUE
- -------------------------------------------------------------------------
                                                     
- -------------------------------------------------------------------------
COMMON STOCKS--99.4%
- -------------------------------------------------------------------------

CONSUMER DISCRETIONARY--6.6%
- -------------------------------------------------------------------------
AUTO COMPONENTS--0.1%
American Axle & Manufacturing
Holdings, Inc.                                  29,400     $    578,592
- -------------------------------------------------------------------------
ArvinMeritor, Inc. 1                            81,600          921,264
- -------------------------------------------------------------------------
Autoliv, Inc.                                   16,100          803,390
- -------------------------------------------------------------------------
Gentex Corp.                                    44,800          722,176
- -------------------------------------------------------------------------
Lear Corp. 2                                   114,100        3,146,878
                                                           --------------
                                                              6,172,300

- -------------------------------------------------------------------------
AUTOMOBILES--0.0%
Thor Industries, Inc.                           30,900          941,832
- -------------------------------------------------------------------------
DIVERSIFIED CONSUMER SERVICES--0.0%
DeVry, Inc.                                     29,800        1,309,412
- -------------------------------------------------------------------------
HOTELS, RESTAURANTS & LEISURE--0.2%
Chipotle Mexican
Grill, Inc., Cl. B 1,2                          43,733        3,757,539
- -------------------------------------------------------------------------
Wyndham Worldwide Corp.                         67,500        1,496,475
- -------------------------------------------------------------------------
Yum! Brands, Inc.                              529,100       18,227,495
                                                           --------------
                                                             23,481,509

- -------------------------------------------------------------------------
HOUSEHOLD DURABLES--0.2%
American Greetings
Corp., Cl. A                                    48,800          918,416
- -------------------------------------------------------------------------
Black & Decker Corp. 1                             200           13,754
- -------------------------------------------------------------------------
KB Home                                         50,100        1,198,893
- -------------------------------------------------------------------------
Lennar Corp., Cl. A 1                          210,700        3,921,127
- -------------------------------------------------------------------------
Mohawk Industries, Inc. 2                       20,500        1,463,905
- -------------------------------------------------------------------------
NVR, Inc. 1,2                                    8,000        4,325,440
- -------------------------------------------------------------------------
Pulte Homes, Inc.                              352,400        4,771,496
- -------------------------------------------------------------------------
Ryland Group, Inc. (The) 1                      33,000          933,570
- -------------------------------------------------------------------------
Tempur-Pedic International, Inc. 1             116,700        2,032,914
- -------------------------------------------------------------------------
Toll Brothers, Inc. 2                          180,100        3,819,921
                                                           --------------
                                                             23,399,436

                                                SHARES            VALUE
- -------------------------------------------------------------------------
INTERNET & CATALOG RETAIL--0.2%
Amazon.com, Inc.2                              291,400       18,786,558
- -------------------------------------------------------------------------
Expedia, Inc. 2                                 88,000        2,017,840
                                                           --------------
                                                             20,804,398

- -------------------------------------------------------------------------
LEISURE EQUIPMENT & PRODUCTS--0.0%
Polaris Industries, Inc. 1                      22,900          874,322
- -------------------------------------------------------------------------
MEDIA--4.2%
CBS Corp., Cl. B                                66,300        1,512,966
- -------------------------------------------------------------------------
Clear Channel  Communications, Inc.          1,724,500       55,184,000
- -------------------------------------------------------------------------
Comcast Corp., Cl. A 2                         551,000       10,766,540
- -------------------------------------------------------------------------
Dish Network Corp., Cl. A 2                    447,620       13,271,933
- -------------------------------------------------------------------------
Gannett Co., Inc.                               62,900        1,896,435
- -------------------------------------------------------------------------
Getty Images, Inc. 2                            39,100        1,257,456
- -------------------------------------------------------------------------
Liberty Global, Inc., Series A 2               380,630       14,311,688
- -------------------------------------------------------------------------
News Corp., Inc., Cl. A                        361,000        6,646,010
- -------------------------------------------------------------------------
Scholastic Corp. 2                              26,900          938,003
- -------------------------------------------------------------------------
Time Warner, Inc.                            8,833,940      137,897,803
- -------------------------------------------------------------------------
Viacom, Inc., Cl. B 2                        1,476,838       58,704,311
- -------------------------------------------------------------------------
Walt Disney Co. (The)                        2,738,400       88,751,544
                                                           --------------
                                                            391,138,689

- -------------------------------------------------------------------------
MULTILINE RETAIL--0.4%
Big Lots, Inc. 1,2                             135,800        2,288,230
- -------------------------------------------------------------------------
Dollar Tree Stores, Inc. 2                     139,600        3,745,468
- -------------------------------------------------------------------------
Family Dollar Stores, Inc.                     191,800        3,672,970
- -------------------------------------------------------------------------
Macy's, Inc.                                   265,500        6,552,540
- -------------------------------------------------------------------------
Sears Holdings Corp. 1,2                       217,600       20,806,912
                                                           --------------
                                                             37,066,120

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

SPECIALTY RETAIL--1.2%
AutoNation, Inc. 2                             237,500        3,460,375
- -------------------------------------------------------------------------
AutoZone, Inc. 1,2                              40,700        4,683,756
- -------------------------------------------------------------------------
Best Buy Co., Inc.                             623,200       26,803,832
- -------------------------------------------------------------------------
Buckle, Inc. (The)                              16,800          762,720
- -------------------------------------------------------------------------
Gap, Inc. (The)                              1,956,910       39,470,875
- -------------------------------------------------------------------------
Home Depot, Inc.                             1,110,800       29,491,740


            43 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF INVESTMENTS Unaudited / Continued
- --------------------------------------------------------------------------------



                                                   SHARES            VALUE
- ----------------------------------------------------------------------------
                                                        
SPECIALTY RETAIL Continued
Men's Wearhouse, Inc. (The)                        40,100     $    923,904
- ----------------------------------------------------------------------------
Office Depot, Inc. 2                              106,300        1,208,631
- ----------------------------------------------------------------------------
RadioShack Corp. 1                                207,200        3,615,640
                                                              --------------
                                                               110,421,473

- ----------------------------------------------------------------------------
TEXTILES, APPAREL & LUXURY GOODS--0.1%
Deckers Outdoor Corp. 2                             6,300          697,032
- ----------------------------------------------------------------------------
Fossil, Inc. 1,2                                   62,400        2,008,032
- ----------------------------------------------------------------------------
Iconix Brand Group, Inc. 2                         43,200          897,696
- ----------------------------------------------------------------------------
Liz Claiborne, Inc. 1                              58,600        1,041,908
- ----------------------------------------------------------------------------
Polo Ralph Lauren Corp., Cl. A 1                   54,900        3,414,231
- ----------------------------------------------------------------------------
Warnaco Group, Inc. (The) 2                        26,800        1,006,608
                                                              --------------
                                                                 9,065,507

- ----------------------------------------------------------------------------
CONSUMER STAPLES--4.4%
- ----------------------------------------------------------------------------
BEVERAGES--1.3%
Anheuser-Busch Cos., Inc.                         201,700        9,498,053
- ----------------------------------------------------------------------------
Central European Distribution Corp. 2              17,000          989,060
- ----------------------------------------------------------------------------
Coca-Cola Co. (The)                             1,129,600       66,036,416
- ----------------------------------------------------------------------------
Constellation Brands, Inc., Cl. A 2                74,600        1,433,066
- ----------------------------------------------------------------------------
PepsiCo, Inc.                                     546,790       38,034,712
                                                              --------------
                                                               115,991,307

- ----------------------------------------------------------------------------
FOOD & STAPLES RETAILING--0.8%
Casey's General Stores, Inc.                       29,300          733,965
- ----------------------------------------------------------------------------
CVS Caremark Corp.                                614,400       24,809,472
- ----------------------------------------------------------------------------
Kroger Co. (The)                                1,377,610       33,407,043
- ----------------------------------------------------------------------------
Wal-Mart Stores, Inc.                             291,900       14,475,321
                                                              --------------
                                                                73,425,801

                                                   SHARES            VALUE
- ----------------------------------------------------------------------------
FOOD PRODUCTS--0.0%
Chiquita Brands International, Inc. 1,2            40,500          829,035
- ----------------------------------------------------------------------------
Darling International, Inc. 2                      72,000        1,000,800
- ----------------------------------------------------------------------------
Fresh Del Monte Produce, Inc. 2                    25,900          860,139
                                                              --------------
                                                                 2,689,974

- ----------------------------------------------------------------------------
HOUSEHOLD PRODUCTS--1.4%
Procter & Gamble Co. (The)                      2,030,285      134,364,261
- ----------------------------------------------------------------------------
PERSONAL PRODUCTS--0.0%
Chattem, Inc. 1,2                                  12,400          965,960
- ----------------------------------------------------------------------------
Herbalife Ltd.                                      6,300          263,529
                                                              --------------
                                                                 1,229,489

- ----------------------------------------------------------------------------
TOBACCO--0.9%
Altria Group, Inc.                              1,186,300       86,765,982
- ----------------------------------------------------------------------------
Universal Corp.                                    17,200          978,852
                                                              --------------
                                                                87,744,834

- ----------------------------------------------------------------------------
ENERGY--16.1%
- ----------------------------------------------------------------------------
ENERGY EQUIPMENT & SERVICES--2.8%
Baker Hughes, Inc.                                113,900        7,664,331
- ----------------------------------------------------------------------------
Diamond Offshore Drilling, Inc.                   199,200       24,069,336
- ----------------------------------------------------------------------------
Dresser-Rand Group, Inc. 2                         45,000        1,533,150
- ----------------------------------------------------------------------------
Dril-Quip, Inc. 2                                  19,200          898,176
- ----------------------------------------------------------------------------
ENSCO International, Inc.                          48,500        2,902,240
- ----------------------------------------------------------------------------
FMC Technologies, Inc. 2                           35,700        2,022,762
- ----------------------------------------------------------------------------
Global Industries Ltd. 2                           57,700        1,062,257
- ----------------------------------------------------------------------------
Halliburton Co.                                 1,194,600       45,753,180
- ----------------------------------------------------------------------------
NATCO Group, Inc., Cl. A 2                         19,600          933,940
- ----------------------------------------------------------------------------
Patterson-UTI Energy, Inc.                         88,600        2,102,478
- ----------------------------------------------------------------------------
Schlumberger Ltd.                               1,661,600      143,645,320
- ----------------------------------------------------------------------------
Seacor Holdings, Inc. 2                             8,100          777,519
- ----------------------------------------------------------------------------
Tidewater, Inc.                                    36,600        2,055,090


            44 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III





                                                   SHARES              VALUE
- ------------------------------------------------------------------------------
                                                        
ENERGY EQUIPMENT & SERVICES Continued
Transocean, Inc.                                  206,200     $   28,973,162
                                                              ----------------
                                                                 264,392,941

- ------------------------------------------------------------------------------
OIL, GAS & CONSUMABLE FUELS--13.3%
Anadarko Petroleum Corp.                          665,500         42,418,970
- ------------------------------------------------------------------------------
Apache Corp.                                      211,900         24,307,049
- ------------------------------------------------------------------------------
Chesapeake Energy Corp.                           531,400         24,029,908
- ------------------------------------------------------------------------------
Chevron Corp.                                   2,442,860        211,698,248
- ------------------------------------------------------------------------------
ConocoPhillips                                  1,928,796        159,530,717
- ------------------------------------------------------------------------------
CONSOL Energy, Inc.                                25,600          1,945,088
- ------------------------------------------------------------------------------
Devon Energy Corp.                                241,600         24,817,152
- ------------------------------------------------------------------------------
EOG Resources, Inc.                               230,700         27,450,993
- ------------------------------------------------------------------------------
Exxon Mobil Corp.                               5,660,196        492,493,654
- ------------------------------------------------------------------------------
Frontier Oil Corp.                                 41,200          1,471,252
- ------------------------------------------------------------------------------
Hess Corp.                                        249,800         23,276,364
- ------------------------------------------------------------------------------
Marathon Oil Corp.                                451,900         24,023,004
- ------------------------------------------------------------------------------
Mariner Energy, Inc. 2                             44,600          1,236,758
- ------------------------------------------------------------------------------
Murphy Oil Corp.                                   22,800          1,832,664
- ------------------------------------------------------------------------------
Noble Energy, Inc.                                 63,600          4,922,640
- ------------------------------------------------------------------------------
Occidental Petroleum Corp.                      1,308,600        101,246,382
- ------------------------------------------------------------------------------
Stone Energy Corp. 2                               21,300          1,081,188
- ------------------------------------------------------------------------------
Valero Energy Corp.                             1,075,800         62,148,966
- ------------------------------------------------------------------------------
XTO Energy, Inc.                                  362,600         22,376,046
                                                              ----------------
                                                               1,252,307,043

- ------------------------------------------------------------------------------
FINANCIALS--18.9%
- ------------------------------------------------------------------------------
CAPITAL MARKETS--3.8%
Ameriprise Financial, Inc.                          5,400            273,456
- ------------------------------------------------------------------------------
Apollo Investment Corp. 1                          62,500            968,750
- ------------------------------------------------------------------------------
Charles Schwab Corp. (The)                        900,500         17,658,805
- ------------------------------------------------------------------------------
FCStone Group, Inc. 2                              21,900          1,021,416
- ------------------------------------------------------------------------------
Goldman Sachs Group, Inc. (The)                 1,057,700        179,417,651
- ------------------------------------------------------------------------------
Invesco Ltd.                                      111,300          2,850,393
- ------------------------------------------------------------------------------

                                                   SHARES              VALUE
- ------------------------------------------------------------------------------
CAPITAL MARKETS Continued
Janus Capital Group, Inc.                         161,400          3,909,108
- ------------------------------------------------------------------------------
Knight Capital Group, Inc., Cl. A 2                57,900            928,137
- ------------------------------------------------------------------------------
Lehman Brothers Holdings, Inc.                    593,200         30,247,268
- ------------------------------------------------------------------------------
Merrill Lynch & Co., Inc.                         989,092         49,019,400
- ------------------------------------------------------------------------------
Morgan Stanley                                  1,495,938         63,008,909
- ------------------------------------------------------------------------------
optionsXpress Holdings, Inc.                       39,800            921,768
- ------------------------------------------------------------------------------
State Street Corp.                                116,600          9,158,930
                                                              ----------------
                                                                 359,383,991

- ------------------------------------------------------------------------------
COMMERCIAL BANKS--2.5%
U.S. Bancorp                                    1,315,270         42,114,945
- ------------------------------------------------------------------------------
Wachovia Corp. 1                                3,618,010        110,783,466
- ------------------------------------------------------------------------------
Wells Fargo & Co. 1                             2,749,720         80,374,316
                                                              ----------------
                                                                 233,272,727

- ------------------------------------------------------------------------------
CONSUMER FINANCE--0.4%
Capital One Financial Corp. 1                     638,100         29,371,743
- ------------------------------------------------------------------------------
Cash America International, Inc.                   27,300            883,428
- ------------------------------------------------------------------------------
Discover Financial Services 1                     114,169          1,722,810
                                                              ----------------
                                                                  31,977,981

- ------------------------------------------------------------------------------
DIVERSIFIED FINANCIAL SERVICES--6.1%
Bank of America Corp.                           5,486,939        218,050,956
- ------------------------------------------------------------------------------
Citigroup, Inc.                                 6,070,346        143,927,904
- ------------------------------------------------------------------------------
JPMorgan Chase & Co.                            5,249,296        213,383,882
- ------------------------------------------------------------------------------
NASDAQ OMX Group, Inc. (The) 2                     52,400          2,175,124
                                                              ----------------
                                                                 577,537,866

- ------------------------------------------------------------------------------
INSURANCE--6.0%
ACE Ltd.                                          276,900         15,572,856
- ------------------------------------------------------------------------------
Allstate Corp.                                    733,100         34,990,863
- ------------------------------------------------------------------------------
American International Group, Inc.              3,936,505        184,464,624


            45 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF INVESTMENTS Unaudited / Continued
- --------------------------------------------------------------------------------



                                                       SHARES            VALUE
- --------------------------------------------------------------------------------
                                                            
INSURANCE Continued
Aon Corp.                                             974,400     $ 40,544,784
- --------------------------------------------------------------------------------
Arch Capital Group Ltd. 2                              19,600        1,342,208
- --------------------------------------------------------------------------------
Aspen Insurance Holdings Ltd.                          38,600        1,117,084
- --------------------------------------------------------------------------------
Assurant, Inc.                                         58,800        3,677,940
- --------------------------------------------------------------------------------
Assured Guaranty Ltd. 1                                40,500        1,038,825
- --------------------------------------------------------------------------------
Axis Capital Holdings Ltd.                             46,600        1,718,142
- --------------------------------------------------------------------------------
Berkley (W.R.) Corp.                                   55,700        1,603,603
- --------------------------------------------------------------------------------
Berkshire Hathaway, Inc., Cl. B 2                       7,300       34,123,850
- --------------------------------------------------------------------------------
Chubb Corp.                                         1,257,700       64,016,930
- --------------------------------------------------------------------------------
CNA Financial Corp.                                    39,100        1,042,015
- --------------------------------------------------------------------------------
Delphi Financial Group, Inc., Cl. A                    17,800          536,848
- --------------------------------------------------------------------------------
Endurance Specialty Holdings Ltd.                      31,400        1,234,020
- --------------------------------------------------------------------------------
Everest Re Group Ltd.                                  19,200        1,860,096
- --------------------------------------------------------------------------------
First American Corp. (The) 1                          110,100        3,834,783
- --------------------------------------------------------------------------------
Genworth Financial, Inc., Cl. A                       605,200       14,028,536
- --------------------------------------------------------------------------------
Hartford Financial Services Group, Inc. (The)         267,000       18,663,300
- --------------------------------------------------------------------------------
HCC Insurance Holdings, Inc.                           53,200        1,279,992
- --------------------------------------------------------------------------------
IPC Holdings Ltd.                                      34,700          941,064
- --------------------------------------------------------------------------------
Lincoln National Corp.                                 36,000        1,839,960
- --------------------------------------------------------------------------------
Loews Corp.                                           590,090       24,689,366
- --------------------------------------------------------------------------------
Max Capital Group Ltd.                                 21,100          585,314
- --------------------------------------------------------------------------------
Mercury General Corp.                                  13,200          601,920
- --------------------------------------------------------------------------------
MetLife, Inc.                                         305,600       17,804,256
- --------------------------------------------------------------------------------
Nationwide Financial Services, Inc., Cl. A             26,100        1,076,625
- --------------------------------------------------------------------------------
Odyssey Re Holdings Corp.                              14,600          528,228
- --------------------------------------------------------------------------------
Partnerre Holdings Ltd.                                24,600        1,891,494
- --------------------------------------------------------------------------------
Phoenix Cos., Inc. (The) 1                              5,800           66,004
- --------------------------------------------------------------------------------
ProAssurance Corp. 2                                   17,000          903,890
- --------------------------------------------------------------------------------
Prudential Financial, Inc.                            318,500       23,240,945
- --------------------------------------------------------------------------------

                                                       SHARES            VALUE
- --------------------------------------------------------------------------------
INSURANCE Continued
Reinsurance Group of America, Inc.                     10,400          568,984
- --------------------------------------------------------------------------------
RenaissanceRe Holdings Ltd.                            29,600        1,625,040
- --------------------------------------------------------------------------------
Safeco Corp.                                           33,300        1,540,458
- --------------------------------------------------------------------------------
StanCorp Financial Group, Inc.                         25,700        1,261,613
- --------------------------------------------------------------------------------
Torchmark Corp.                                        28,900        1,741,514
- --------------------------------------------------------------------------------
Travelers Cos., Inc. (The)                          1,178,113       54,676,224
- --------------------------------------------------------------------------------
UnumProvident Corp.                                   116,100        2,659,851
- --------------------------------------------------------------------------------
XL Capital Ltd., Cl. A                                 51,900        1,871,514
                                                                  --------------
                                                                   566,805,563

- --------------------------------------------------------------------------------
REAL ESTATE INVESTMENT TRUSTS--0.1%
General Growth Properties, Inc. 1                     156,000        5,508,360
- --------------------------------------------------------------------------------
REAL ESTATE MANAGEMENT & DEVELOPMENT--0.0%
Jones Lang LaSalle, Inc.                               17,500        1,336,825
- --------------------------------------------------------------------------------
HEALTH CARE--9.0%
- --------------------------------------------------------------------------------
BIOTECHNOLOGY--1.0%
Amgen, Inc. 2                                         806,600       36,716,432
- --------------------------------------------------------------------------------
Biogen Idec, Inc. 2                                   582,000       33,965,520
- --------------------------------------------------------------------------------
Genentech, Inc. 2                                     311,500       23,596,125
- --------------------------------------------------------------------------------
OSI Pharmaceuticals, Inc. 1,2                           8,800          316,360
                                                                  --------------
                                                                    94,594,437

- --------------------------------------------------------------------------------
HEALTH CARE EQUIPMENT & SUPPLIES--0.5%
Baxter International, Inc.                            763,800       45,079,476
- --------------------------------------------------------------------------------
Medtronic, Inc.                                        57,400        2,833,264
                                                                  ------------
                                                                    47,912,740

- --------------------------------------------------------------------------------
HEALTH CARE PROVIDERS & SERVICES--4.2%
Aetna, Inc.                                         1,283,600       63,666,560
- --------------------------------------------------------------------------------
Amedisys, Inc. 2                                       17,500          748,650
- --------------------------------------------------------------------------------
AMERIGROUP Corp. 2                                     26,500          954,000
- --------------------------------------------------------------------------------
AmerisourceBergen Corp.                                86,400        3,604,608
- --------------------------------------------------------------------------------
Centene Corp. 1,2                                      44,400          795,648
- --------------------------------------------------------------------------------
CIGNA Corp.                                           182,600        8,140,308


            46 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III





                                                     SHARES            VALUE
- ------------------------------------------------------------------------------
                                                          
HEALTH CARE PROVIDERS & SERVICES Continued
Coventry Health Care, Inc. 2                         69,400     $  3,599,778
- ------------------------------------------------------------------------------
Express Scripts, Inc. 2                             611,700       36,151,470
- ------------------------------------------------------------------------------
Health Net, Inc. 2                                   91,900        4,038,086
- ------------------------------------------------------------------------------
Healthspring, Inc. 2                                 24,300          426,465
- ------------------------------------------------------------------------------
Humana, Inc. 2                                      359,400       24,557,802
- ------------------------------------------------------------------------------
Lincare Holdings, Inc. 2                             78,800        2,561,000
- ------------------------------------------------------------------------------
McKesson Corp.                                      406,100       23,862,436
- ------------------------------------------------------------------------------
Medco Health Solutions, Inc. 2                      949,700       42,081,207
- ------------------------------------------------------------------------------
Omnicare, Inc.                                      140,100        2,939,298
- ------------------------------------------------------------------------------
UnitedHealth Group, Inc.                          1,971,994       91,658,281
- ------------------------------------------------------------------------------
WellPoint, Inc. 2                                 1,167,872       81,844,470
                                                                --------------
                                                                 391,630,067

- ------------------------------------------------------------------------------
LIFE SCIENCES TOOLS & SERVICES--0.1%
Applera Corp./Applied Biosystems Group               72,200        2,433,862
- ------------------------------------------------------------------------------
Invitrogen Corp. 2                                   52,500        4,435,725
                                                                --------------
                                                                   6,869,587

- ------------------------------------------------------------------------------
PHARMACEUTICALS--3.2%
Abbott Laboratories                                  90,300        4,835,565
- ------------------------------------------------------------------------------
Endo Pharmaceuticals Holdings, Inc. 2               107,000        2,809,820
- ------------------------------------------------------------------------------
Forest Laboratories, Inc. 2                         349,000       13,879,730
- ------------------------------------------------------------------------------
Johnson & Johnson                                 2,305,044      142,820,526
- ------------------------------------------------------------------------------
King Pharmaceuticals, Inc. 2                        363,700        3,855,220
- ------------------------------------------------------------------------------
Merck & Co., Inc.                                   797,010       35,307,543
- ------------------------------------------------------------------------------
Pfizer, Inc.                                      3,714,792       82,765,566
- ------------------------------------------------------------------------------
Sciele Pharma, Inc. 2                                17,600          364,320
- ------------------------------------------------------------------------------
Wyeth                                               367,200       16,017,264
                                                                --------------
                                                                 302,655,554

- ------------------------------------------------------------------------------
INDUSTRIALS--10.6%
- ------------------------------------------------------------------------------
AEROSPACE & DEFENSE--3.2%
AAR Corp. 2                                          28,700          743,043
- ------------------------------------------------------------------------------
Boeing Co.                                          651,900       53,970,801
- ------------------------------------------------------------------------------

                                                     SHARES            VALUE
- ------------------------------------------------------------------------------
AEROSPACE & DEFENSE Continued
Ceradyne, Inc. 2                                     19,900          619,089
- ------------------------------------------------------------------------------
DRS Technologies, Inc.                               25,500        1,430,295
- ------------------------------------------------------------------------------
Esterline Technologies Corp. 2                       15,400          806,960
- ------------------------------------------------------------------------------
Honeywell International, Inc.                       857,200       49,323,288
- ------------------------------------------------------------------------------
L-3 Communications Holdings, Inc. 1                 311,050       33,061,505
- ------------------------------------------------------------------------------
Northrop Grumman Corp.                              641,070       50,394,513
- ------------------------------------------------------------------------------
Raytheon Co.                                        682,200       44,233,848
- ------------------------------------------------------------------------------
TransDigm Group, Inc. 2                              19,900          773,314
- ------------------------------------------------------------------------------
Triumph Group, Inc. 1                                16,300          922,417
- ------------------------------------------------------------------------------
United Technologies Corp.                           897,100       63,254,521
                                                                --------------
                                                                 299,533,594

- ------------------------------------------------------------------------------
AIRLINES--0.1%
Continental Airlines, Inc., Cl. B 2                 156,200        3,776,916
- ------------------------------------------------------------------------------
JetBlue Airways Corp. 2                             142,000          773,900
- ------------------------------------------------------------------------------
Northwest Airlines Corp. 2                           86,242        1,158,230
- ------------------------------------------------------------------------------
SkyWest, Inc. 1                                      41,400          915,768
- ------------------------------------------------------------------------------
Southwest Airlines Co.                              220,400        2,702,104
- ------------------------------------------------------------------------------
UAL Corp. 1                                          73,400        2,224,020
                                                                --------------
                                                                  11,550,938

- ------------------------------------------------------------------------------
BUILDING PRODUCTS--0.0%
USG Corp. 1,2                                        94,500        3,215,835
- ------------------------------------------------------------------------------
COMMERCIAL SERVICES & SUPPLIES--0.2%
ChoicePoint, Inc. 2                                  27,200        1,316,480
- ------------------------------------------------------------------------------
Corporate Executive Board Co. (The)                   6,000          243,660
- ------------------------------------------------------------------------------
IHS, Inc., Cl. A 2                                   16,800        1,035,720
- ------------------------------------------------------------------------------
Ikon Office Solutions, Inc.                          70,500          501,960
- ------------------------------------------------------------------------------
Manpower, Inc.                                       28,800        1,632,960
- ------------------------------------------------------------------------------
Miller (Herman), Inc.                                31,200          930,696
- ------------------------------------------------------------------------------
Robert Half International, Inc.                     112,400        3,029,180


            47 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF INVESTMENTS Unaudited / Continued
- --------------------------------------------------------------------------------



                                                   SHARES            VALUE
- ----------------------------------------------------------------------------
                                                        
COMMERCIAL SERVICES & SUPPLIES Continued
Steelcase, Inc., Cl. A                             46,500     $    659,370
- ----------------------------------------------------------------------------
United Stationers, Inc. 2                          14,400          710,784
- ----------------------------------------------------------------------------
Waste Management, Inc.                            131,600        4,320,428
- ----------------------------------------------------------------------------
Watson Wyatt & Co. Holdings                        18,100          960,205
                                                              --------------
                                                                15,341,443

- ----------------------------------------------------------------------------
CONSTRUCTION & ENGINEERING--0.1%
EMCOR Group, Inc. 2                                40,000          963,600
- ----------------------------------------------------------------------------
Fluor Corp.                                        12,474        1,737,005
- ----------------------------------------------------------------------------
KBR, Inc. 2                                        62,500        2,083,125
- ----------------------------------------------------------------------------
Perini Corp. 2                                     27,200        1,019,456
- ----------------------------------------------------------------------------
Shaw Group, Inc. (The) 2                           26,100        1,680,318
- ----------------------------------------------------------------------------
URS Corp. 2                                        30,600        1,232,568
                                                              --------------
                                                                 8,716,072

- ----------------------------------------------------------------------------
ELECTRICAL EQUIPMENT--0.2%
Acuity Brands, Inc.                                24,900        1,105,809
- ----------------------------------------------------------------------------
Belden, Inc.                                       21,800          856,740
- ----------------------------------------------------------------------------
Emerson Electric Co.                              182,600        9,305,296
- ----------------------------------------------------------------------------
GrafTech International Ltd. 2                      62,300          998,046
- ----------------------------------------------------------------------------
Regal-Beloit Corp.                                 13,300          491,036
- ----------------------------------------------------------------------------
Smith (A.O.) Corp.                                 26,300          958,109
- ----------------------------------------------------------------------------
Thomas & Betts Corp. 2                             74,800        3,003,220
- ----------------------------------------------------------------------------
Woodward Governor Co.                              24,500          699,965
                                                              --------------
                                                                17,418,221

- ----------------------------------------------------------------------------
INDUSTRIAL CONGLOMERATES--4.8%
3M Co.                                            770,600       60,415,040
- ----------------------------------------------------------------------------
General Electric Co.                            9,470,884      313,865,096
- ----------------------------------------------------------------------------
Teleflex, Inc.                                     14,900          842,595
- ----------------------------------------------------------------------------
Textron, Inc.                                     214,300       11,608,631
- ----------------------------------------------------------------------------
Tyco International Ltd.                         1,672,925       67,017,376
- ----------------------------------------------------------------------------
Walter Industries, Inc.                            26,000        1,420,380
                                                              --------------
                                                               455,169,118

                                                   SHARES            VALUE
- ----------------------------------------------------------------------------
MACHINERY--2.0%
Actuant Corp., Cl. A                               33,300          895,104
- ----------------------------------------------------------------------------
Barnes Group, Inc.                                 31,600          718,584
- ----------------------------------------------------------------------------
Briggs & Stratton Corp. 1                          41,500          741,605
- ----------------------------------------------------------------------------
Caterpillar, Inc.                                 865,200       62,579,916
- ----------------------------------------------------------------------------
Cummins, Inc.                                     325,000       16,373,500
- ----------------------------------------------------------------------------
Deere & Co.                                       307,200       26,176,512
- ----------------------------------------------------------------------------
Eaton Corp.                                       238,600       19,238,318
- ----------------------------------------------------------------------------
IDEX Corp.                                         22,300          672,568
- ----------------------------------------------------------------------------
Ingersoll-Rand Co. Ltd., Cl. A 1                  373,700       15,643,082
- ----------------------------------------------------------------------------
Paccar, Inc.                                      133,700        5,799,906
- ----------------------------------------------------------------------------
Parker-Hannifin Corp. 1                           514,530       33,254,074
- ----------------------------------------------------------------------------
Pentair, Inc.                                      22,100          720,902
- ----------------------------------------------------------------------------
Robbins & Myers, Inc.                              29,000          987,450
- ----------------------------------------------------------------------------
SPX Corp.                                           7,500          767,250
- ----------------------------------------------------------------------------
Timken Co.                                         30,900          931,017
- ----------------------------------------------------------------------------
Toro Co. (The)                                     12,200          587,796
                                                              --------------
                                                               186,087,584

- ----------------------------------------------------------------------------
MARINE--0.0%
TBS International Ltd., Cl. A 1,2                  26,900          926,436
- ----------------------------------------------------------------------------
TRADING COMPANIES & DISTRIBUTORS--0.0%
Applied Industrial Technologies, Inc.              32,400          895,536
- ----------------------------------------------------------------------------
United Rentals, Inc. 2                             52,000        1,045,200
                                                              --------------
                                                                 1,940,736

- ----------------------------------------------------------------------------
INFORMATION TECHNOLOGY--26.9%
- ----------------------------------------------------------------------------
COMMUNICATIONS EQUIPMENT--4.7%
Blue Coat Systems, Inc. 2                          35,600          835,888
- ----------------------------------------------------------------------------
Cisco Systems, Inc. 2                           7,076,400      172,451,868
- ----------------------------------------------------------------------------
CommScope, Inc. 2                                  91,600        3,836,208
- ----------------------------------------------------------------------------
EchoStar Holding Corp. 2                           89,524        3,586,331
- ----------------------------------------------------------------------------
Foundry Networks, Inc. 2                          212,200        2,518,814
- ----------------------------------------------------------------------------
Harmonic, Inc. 2                                  103,200          919,512
- ----------------------------------------------------------------------------
Harris Corp.                                       36,600        1,787,178
- ----------------------------------------------------------------------------
Juniper Networks, Inc. 2                          852,074       22,852,625


            48 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III





                                                           SHARES            VALUE
- ------------------------------------------------------------------------------------
                                                                
COMMUNICATIONS EQUIPMENT Continued
Motorola, Inc.                                          1,248,900     $ 12,451,533
- ------------------------------------------------------------------------------------
Plantronics, Inc.                                          50,800          958,088
- ------------------------------------------------------------------------------------
QUALCOMM, Inc. 1                                        5,151,275      218,259,522
- ------------------------------------------------------------------------------------
Tellabs, Inc. 1,2                                         277,700        1,827,266
                                                                      --------------
                                                                       442,284,833

- ------------------------------------------------------------------------------------
COMPUTERS & PERIPHERALS--8.0%
Apple, Inc. 2                                           1,059,100      132,408,682
- ------------------------------------------------------------------------------------
Brocade Communications Systems, Inc. 2                    180,300        1,386,507
- ------------------------------------------------------------------------------------
Dell, Inc. 2                                            2,139,800       42,475,030
- ------------------------------------------------------------------------------------
EMC Corp. 2                                             1,756,700       27,299,118
- ------------------------------------------------------------------------------------
Hewlett-Packard Co.                                     5,682,200      271,438,694
- ------------------------------------------------------------------------------------
International Business Machines Corp.                   1,927,200      219,430,992
- ------------------------------------------------------------------------------------
Lexmark International, Inc., Cl. A 2                      112,900        3,729,087
- ------------------------------------------------------------------------------------
NCR Corp. 2                                               167,400        3,709,584
- ------------------------------------------------------------------------------------
Network Appliance, Inc. 2                                 207,900        4,494,798
- ------------------------------------------------------------------------------------
SanDisk Corp. 2                                            88,900        2,093,595
- ------------------------------------------------------------------------------------
Seagate Technology 1                                    1,589,420       34,283,789
- ------------------------------------------------------------------------------------
Teradata Corp. 2                                          105,200        2,654,196
- ------------------------------------------------------------------------------------
Western Digital Corp. 2                                    83,300        2,571,471
                                                                      --------------
                                                                       747,975,543

- ------------------------------------------------------------------------------------
ELECTRONIC EQUIPMENT & INSTRUMENTS--0.5%
Agilent Technologies, Inc. 2                            1,102,200       33,738,342
- ------------------------------------------------------------------------------------
Arrow Electronics, Inc. 2                                 116,300        3,792,543
- ------------------------------------------------------------------------------------
Avnet, Inc. 2                                             123,100        4,149,701
- ------------------------------------------------------------------------------------
Benchmark Electronics, Inc. 2                              26,400          443,520
- ------------------------------------------------------------------------------------
Molex, Inc.                                                56,000        1,261,680
- ------------------------------------------------------------------------------------
Plexus Corp. 2                                             22,900          567,233
- ------------------------------------------------------------------------------------
Rofin-Sinar Technologies, Inc. 2                           24,900          980,313
                                                                      --------------
                                                                        44,933,332

                                                           SHARES            VALUE
- ------------------------------------------------------------------------------------
INTERNET SOFTWARE & SERVICES--1.9%
Bankrate, Inc. 1,2                                         20,200          853,652
- ------------------------------------------------------------------------------------
eBay, Inc. 2                                            1,943,100       51,220,116
- ------------------------------------------------------------------------------------
Google, Inc., Cl. A 2                                     268,200      126,370,476
- ------------------------------------------------------------------------------------
Open Text Corp. 1,2                                        30,200          972,440
- ------------------------------------------------------------------------------------
Sohu.com, Inc. 2                                           20,600          928,648
                                                                      --------------
                                                                       180,345,332

- ------------------------------------------------------------------------------------
IT SERVICES--1.5%
Accenture Ltd., Cl. A                                   1,578,500       55,642,125
- ------------------------------------------------------------------------------------
Automatic Data Processing, Inc.                           989,400       39,526,530
- ------------------------------------------------------------------------------------
Computer Sciences Corp. 2                                  99,500        4,323,275
- ------------------------------------------------------------------------------------
Convergys Corp. 2                                          55,400          799,976
- ------------------------------------------------------------------------------------
CyberSource Corp. 2                                        49,400          721,734
- ------------------------------------------------------------------------------------
DST Systems, Inc. 1,2                                      53,600        3,765,936
- ------------------------------------------------------------------------------------
Electronic Data Systems Corp.                           1,888,700       32,712,284
- ------------------------------------------------------------------------------------
Euronet Worldwide, Inc. 2                                  11,300          244,080
- ------------------------------------------------------------------------------------
Hewitt Associates, Inc. 2                                  79,000        3,117,340
- ------------------------------------------------------------------------------------
SAIC, Inc. 2                                               73,400        1,399,004
- ------------------------------------------------------------------------------------
VeriFone Holdings, Inc. 1,2                                47,400          978,810
                                                                      --------------
                                                                       143,231,094

- ------------------------------------------------------------------------------------
OFFICE ELECTRONICS--0.3%
Xerox Corp.                                             2,069,900       30,427,530
- ------------------------------------------------------------------------------------
Zebra Technologies Corp., Cl. A 2                          13,600          453,152
                                                                      --------------
                                                                        30,880,682

- ------------------------------------------------------------------------------------
SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT--4.7%
Analog Devices, Inc.                                      381,300       10,264,596
- ------------------------------------------------------------------------------------
Applied Materials, Inc.                                 3,045,900       58,389,903
- ------------------------------------------------------------------------------------
Atmel Corp. 2                                             288,100          936,325
- ------------------------------------------------------------------------------------
Broadcom Corp., Cl. A 2                                   138,000        2,609,580
- ------------------------------------------------------------------------------------
Cypress Semiconductor Corp. 2                              87,500        1,902,250
- ------------------------------------------------------------------------------------
Intel Corp.                                             8,395,800      167,496,210
- ------------------------------------------------------------------------------------
Intersil Corp., Cl. A                                     140,300        3,264,781


            49 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF INVESTMENTS Unaudited / Continued
- --------------------------------------------------------------------------------



                                                         SHARES          VALUE
- --------------------------------------------------------------------------------
                                                            
SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT Continued
KLA-Tencor Corp.                                         62,700   $  2,634,027
- --------------------------------------------------------------------------------
Lam Research Corp. 2                                     71,800      2,889,232
- --------------------------------------------------------------------------------
MEMC Electronic Materials, Inc. 2                       550,100     41,961,628
- --------------------------------------------------------------------------------
Novellus Systems, Inc. 2                                155,000      3,422,400
- --------------------------------------------------------------------------------
NVIDIA Corp. 2                                        2,025,900     43,334,001
- --------------------------------------------------------------------------------
OmniVision Technologies, Inc. 1,2                        65,700      1,042,002
- --------------------------------------------------------------------------------
PMC-Sierra, Inc. 1,2                                    199,700        956,563
- --------------------------------------------------------------------------------
Semtech Corp. 2                                          78,400        998,816
- --------------------------------------------------------------------------------
Sigma Designs, Inc. 2                                    27,400        806,930
- --------------------------------------------------------------------------------
Silicon Laboratories, Inc.                               31,200        965,640
- --------------------------------------------------------------------------------
Skyworks Solutions, Inc. 2                              111,200        918,512
- --------------------------------------------------------------------------------
Texas Instruments, Inc.                               2,905,200     87,039,792
- --------------------------------------------------------------------------------
Varian Semiconductor Equipment Associates, Inc. 2       101,900      3,442,182
- --------------------------------------------------------------------------------
Xilinx, Inc.                                            203,500      4,550,260
                                                                  --------------
                                                                   439,825,630

- --------------------------------------------------------------------------------
SOFTWARE--5.3%
Activision, Inc. 2                                      163,900      4,466,275
- --------------------------------------------------------------------------------
Adobe Systems, Inc.  2                                  915,900     30,820,035
- --------------------------------------------------------------------------------
Advent Software, Inc.  2                                 20,400        916,776
- --------------------------------------------------------------------------------
Ansys, Inc. 1,2                                          46,000      1,719,020
- --------------------------------------------------------------------------------
Autodesk, Inc. 2                                        119,100      3,702,819
- --------------------------------------------------------------------------------
BEA Systems, Inc. 2                                     342,000      6,521,940
- --------------------------------------------------------------------------------
BMC Software, Inc. 2                                    154,000      4,971,120
- --------------------------------------------------------------------------------
CA, Inc.                                                411,800      9,421,984
- --------------------------------------------------------------------------------
Cadence Design Systems, Inc. 2                          252,400      2,680,488
- --------------------------------------------------------------------------------
Check Point Software Technologies Ltd. 2                100,900      2,211,728
- --------------------------------------------------------------------------------
Compuware Corp. 2                                       420,400      3,346,384
- --------------------------------------------------------------------------------
Macrovision Corp. 1,2                                    22,200        339,438
- --------------------------------------------------------------------------------
McAfee, Inc. 2                                          121,700      4,048,959
- --------------------------------------------------------------------------------
MICROS Systems, Inc. 2                                   79,800      2,556,792
- --------------------------------------------------------------------------------
Microsoft Corp.                                      11,101,054    302,170,690
- --------------------------------------------------------------------------------

                                                         SHARES          VALUE
- --------------------------------------------------------------------------------
SOFTWARE Continued
MicroStrategy, Inc., Cl. A 2                             11,400        758,328
- --------------------------------------------------------------------------------
Net 1 UEPS Technologies, Inc. 2                          27,400        797,340
- --------------------------------------------------------------------------------
Novell, Inc. 2                                          542,000      4,037,900
- --------------------------------------------------------------------------------
Oracle Corp. 2                                        3,029,800     56,960,240
- --------------------------------------------------------------------------------
Quest Software, Inc. 2                                   53,500        761,305
- --------------------------------------------------------------------------------
Red Hat, Inc. 2                                           9,200        164,036
- --------------------------------------------------------------------------------
Sybase, Inc. 2                                           59,800      1,591,876
- --------------------------------------------------------------------------------
Symantec Corp. 2                                      2,923,800     49,236,792
- --------------------------------------------------------------------------------
Synopsys, Inc. 2                                         97,800      2,269,938
- --------------------------------------------------------------------------------
TIBCO Software, Inc. 2                                  114,400        806,520
                                                                  --------------
                                                                   497,278,723

- --------------------------------------------------------------------------------
MATERIALS--4.2%
- --------------------------------------------------------------------------------
CHEMICALS--1.4%
Ashland, Inc.                                            28,500      1,258,845
- --------------------------------------------------------------------------------
CF Industries Holdings, Inc.                             21,100      2,575,888
- --------------------------------------------------------------------------------
Cytec Industries, Inc.                                   23,000      1,317,440
- --------------------------------------------------------------------------------
Dow Chemical Co. (The)                                  653,300     24,622,877
- --------------------------------------------------------------------------------
Hercules, Inc.                                           53,300        976,456
- --------------------------------------------------------------------------------
Monsanto Co.                                            524,400     60,662,592
- --------------------------------------------------------------------------------
Mosaic Co. (The) 2                                      247,470     27,543,411
- --------------------------------------------------------------------------------
NewMarket Corp.                                          11,900        796,705
- --------------------------------------------------------------------------------
OM Group, Inc. 2                                         17,300      1,047,169
- --------------------------------------------------------------------------------
Scotts Miracle-Gro Co. (The), Cl. A                      36,000      1,281,240
- --------------------------------------------------------------------------------
Terra Industries, Inc. 1,2                               86,500      3,910,665
- --------------------------------------------------------------------------------
Zep, Inc.                                                 2,550         40,035
                                                                  --------------
                                                                   126,033,323

- --------------------------------------------------------------------------------
CONTAINERS & PACKAGING--0.0%
Greif, Inc., Cl. A                                       11,600        758,524
- --------------------------------------------------------------------------------
Owens-Illinois, Inc. 2                                   35,700      2,015,265
- --------------------------------------------------------------------------------
Rock-Tenn Co., Cl. A                                     35,600        955,148
                                                                  --------------
                                                                     3,728,937


            50 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III





                                                                        SHARES              VALUE
- ---------------------------------------------------------------------------------------------------
                                                                             
METALS & MINING--2.8%
AK Steel Holding Corp.                                                  71,800     $    3,778,116
- ---------------------------------------------------------------------------------------------------
Alcoa, Inc.                                                            891,300         33,102,882
- ---------------------------------------------------------------------------------------------------
Carpenter Technology Corp.                                              43,300          2,720,539
- ---------------------------------------------------------------------------------------------------
Compass Minerals International, Inc.                                    13,800            785,496
- ---------------------------------------------------------------------------------------------------
Freeport-McMoRan Copper & Gold, Inc., Cl. B                            457,800         46,173,708
- ---------------------------------------------------------------------------------------------------
Hecla Mining Co. 1,2                                                    97,300          1,118,950
- ---------------------------------------------------------------------------------------------------
Kaiser Aluminum Corp.                                                   10,500            770,175
- ---------------------------------------------------------------------------------------------------
Nucor Corp.                                                          1,093,300         70,594,381
- ---------------------------------------------------------------------------------------------------
Reliance Steel & Aluminum Co.                                           55,900          3,100,214
- ---------------------------------------------------------------------------------------------------
Schnitzer Steel Industries, Inc.                                        15,400          1,008,238
- ---------------------------------------------------------------------------------------------------
Southern Copper Corp. 1                                                560,610         63,971,207
- ---------------------------------------------------------------------------------------------------
United States Steel Corp.                                              335,100         36,341,595
- ---------------------------------------------------------------------------------------------------
Worthington Industries, Inc. 1                                          56,000            985,040
                                                                                   ----------------
                                                                                      264,450,541

- ---------------------------------------------------------------------------------------------------
PAPER & FOREST PRODUCTS--0.0%
AbitibiBowater, Inc. 1                                                  46,800            484,380
- ---------------------------------------------------------------------------------------------------
Domtar Corp. 2                                                         102,300            651,651
                                                                                   ----------------
                                                                                        1,136,031

- ---------------------------------------------------------------------------------------------------
TELECOMMUNICATION SERVICES--2.6%
- ---------------------------------------------------------------------------------------------------
DIVERSIFIED TELECOMMUNICATION SERVICES--2.5%
AT&T, Inc.                                                           5,239,244        182,482,869
- ---------------------------------------------------------------------------------------------------
CenturyTel, Inc.                                                       102,700          3,716,713
- ---------------------------------------------------------------------------------------------------
Qwest Communications International, Inc. 1                           2,682,100         14,483,340
- ---------------------------------------------------------------------------------------------------
Verizon Communications, Inc.                                           853,100         30,984,592
                                                                                   ----------------
                                                                                      231,667,514

- ---------------------------------------------------------------------------------------------------
WIRELESS TELECOMMUNICATION SERVICES--0.1%
Sprint Nextel Corp.                                                  1,323,588          9,410,711
- ---------------------------------------------------------------------------------------------------
Telephone & Data Systems, Inc.                                          58,300          2,734,270
                                                                                   ----------------
                                                                                       12,144,981

                                                                        SHARES              VALUE
- ---------------------------------------------------------------------------------------------------
UTILITIES--0.1%
- ---------------------------------------------------------------------------------------------------
ENERGY TRADERS--0.1%
Mirant Corp. 2                                                          78,800          2,915,600
- ---------------------------------------------------------------------------------------------------
NRG Energy, Inc. 2                                                      57,900          2,389,533
                                                                                   ----------------
                                                                                        5,305,133

- ---------------------------------------------------------------------------------------------------
GAS UTILITIES--0.0%
Northwest Natural Gas Co.                                               12,700            533,908
- ---------------------------------------------------------------------------------------------------
WGL Holdings, Inc.                                                      30,400            948,173
                                                                                   ----------------
                                                                                        1,482,081
                                                                                   ----------------
Total Common Stocks (Cost $8,478,429,094)                                           9,348,910,033

- ---------------------------------------------------------------------------------------------------
PREFERRED STOCKS--0.0%
- ---------------------------------------------------------------------------------------------------

Wachovia Corp., Dividend Equalization Preferred
Shares 2,4 (Cost $0)                                                   100,000                150

                                                                         UNITS
- ---------------------------------------------------------------------------------------------------
RIGHTS, WARRANTS AND CERTIFICATES -- 0.0%
- ---------------------------------------------------------------------------------------------------

Dime Bancorp, Inc. Wts., Exp. 1/2/10 2                                 485,800             63,154
- ---------------------------------------------------------------------------------------------------
Progress Energy, Inc., Contingent Value Obligation 2,4                 680,100            224,433
                                                                                   ----------------
Total Rights, Warrants and Certificates (Cost $0)                                         287,587

                                                                        SHARES
- ---------------------------------------------------------------------------------------------------
OTHER SECURITIES--0.0%
- ---------------------------------------------------------------------------------------------------

Seagate Technology International, Inc. 2,3,4 (Cost $0)                 877,600             87,760

- ---------------------------------------------------------------------------------------------------
INVESTMENT COMPANY--0.7%
- ---------------------------------------------------------------------------------------------------

Oppenheimer Institutional Money Market Fund,
Cl. E, 3.99% 5,6 (Cost $64,239,217)                                 64,239,217         64,239,217
- ---------------------------------------------------------------------------------------------------
Total Investments, at Value (excluding Investments Purchased
with Cash Collateral from Securities Loaned)
(Cost $8,542,668,311)                                                               9,413,524,747


            51 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF INVESTMNTS Unaudited / Continued
- --------------------------------------------------------------------------------



                                           PRINCIPAL
                                             AMOUNT               VALUE
- -------------------------------------------------------------------------------
                                                        
- -------------------------------------------------------------------------------
INVESTMENTS PURCHASED WITH CASH COLLATERAL FROM SECURITIES LOANED -- 5.9% 7
- -------------------------------------------------------------------------------

Undivided interest of
35% in joint repurchase
agreement (Principal
Amount/ Value $1,000,000,000,
with a maturity value of
$1,000,266,667) with
Societe Generale, NY Branch,
3.20%, dated 2/29/08, to be
repurchased at $350,093,333
on 3/3/08, collateralized by
U.S. Agency Mortgages,
3.219%-7.50%, 5/20/32-12/1/37,
with a value of $1,020,000,000          $   350,000,000       $   350,000,000
- -------------------------------------------------------------------------------
Undivided interest of 5%
in joint repurchase
agreement (Principal
Amount/Value $1,000,000,000,
with a maturity value of
$1,000,264,167) with Banc
of America Securities LLC,
3.17%, dated 2/29/08, to
be repurchased at $50,013,208
on 3/3/08, collateralized by
U.S. Agency Mortgages, 0%-11%,
9/25/09-7/1/37, with a
value of $1,020,000,000                      50,000,000            50,000,000
- -------------------------------------------------------------------------------
Undivided interest of 7.92%
in joint repurchase
agreement (Principal
Amount/Value $2,000,000,000,
with a maturity value of
$2,000,530,000) with BNP
Paribas Securities Corp.,
3.18%, dated 2/29/08, to
be repurchased at
$158,520,889 on 3/3/08,
collateralized by U.S.
Agency Mortgages, 0%-6.50%,
2/1/34-3/1/38, with a
value of $ 2,040,000,000                    158,478,892           158,478,892
                                                              -----------------

Total Investments Purchased
with Cash Collateral from
Securities Loaned (Cost $558,478,892)                             558,478,892

- -------------------------------------------------------------------------------
TOTAL INVESTMENTS, AT VALUE
(COST $9,101,147,203)                             106.0%        9,972,003,639
- -------------------------------------------------------------------------------
LIABILITIES IN EXCESS OF OTHER ASSETS              (6.0)         (564,531,408)
                                        ---------------------------------------
NET ASSETS                                        100.0%      $ 9,407,472,231
                                        =======================================


FOOTNOTES TO STATEMENT OF INVESTMENTS

1. Partial or fully-loaned security. See Note 6 of accompanying Notes.

2. Non-income producing security.

3. Escrow shares received as the result of issuer reorganization.

4. Illiquid security. The aggregate value of illiquid securities as of February
29, 2008 was $312,343, which represents less than 0.005% of the Fund's net
assets. See Note 5 of accompanying Notes.

5. Is or was an affiliate, as defined in the Investment Company Act of 1940, at
or during the period ended February 29, 2008, by virtue of the Fund owning at
least 5% of the voting securities of the issuer or as a result of the Fund and
the issuer having the same investment adviser. Transactions during the period in
which the issuer was an affiliate are as follows:



                        SHARES          GROSS        GROSS             SHARES
               AUGUST 31, 2007      ADDITIONS   REDUCTIONS  FEBRUARY 29, 2008
- -------------------------------------------------------------------------------
                                                
Oppenheimer
Institutional
Money Market
Fund, Cl. E                 --  1,015,177,646  950,938,429         64,239,217




                                                                     DIVIDEND
                                                        VALUE          INCOME
- -------------------------------------------------------------------------------
                                                           
Oppenheimer Institutional
Money Market Fund, Cl. E                          $64,239,217    $  1,087,999


6. Rate shown is the 7-day yield as of February 29, 2008.

7. 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 6 of
accompanying Notes.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            52 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF ASSETS AND LIABILITIES Unaudited
- --------------------------------------------------------------------------------

February 29, 2008


                                                                                      
- ------------------------------------------------------------------------------------------------------------
ASSETS
- ------------------------------------------------------------------------------------------------------------

Investments, at value--see accompanying statement of investments:
Unaffiliated companies (cost $ 9,036,907,986)                                            $   9,907,764,422
Affiliated companies (cost $ 64,239,217)                                                        64,239,217
                                                                                         -------------------

                                                                                             9,972,003,639
- ------------------------------------------------------------------------------------------------------------
Cash                                                                                            11,487,968
- ------------------------------------------------------------------------------------------------------------
Receivables and other assets:
Investments sold                                                                               134,508,741
Interest and dividends                                                                          20,815,828
Shares of capital stock sold                                                                     2,759,266
Other                                                                                              553,488
                                                                                         -------------------
Total assets                                                                                10,142,128,930

- ------------------------------------------------------------------------------------------------------------
LIABILITIES
- ------------------------------------------------------------------------------------------------------------

Return of collateral for securities loaned                                                     558,478,892
- ------------------------------------------------------------------------------------------------------------
Payables and other liabilities:
Investments purchased                                                                          154,650,601
Shares of capital stock redeemed                                                                15,262,326
Distribution and service plan fees                                                               3,638,107
Transfer and shareholder servicing agent fees                                                    1,387,270
Shareholder communications                                                                       1,030,485
Directors' compensation                                                                            140,391
Other                                                                                               68,627
                                                                                         -------------------
Total liabilities                                                                              734,656,699

- ------------------------------------------------------------------------------------------------------------
NET ASSETS                                                                               $   9,407,472,231
                                                                                         ===================

- ------------------------------------------------------------------------------------------------------------
COMPOSITION OF NET ASSETS
- ------------------------------------------------------------------------------------------------------------

Par value of shares of capital stock                                                     $       2,873,674
- ------------------------------------------------------------------------------------------------------------
Additional paid-in capital                                                                   8,847,474,135
- ------------------------------------------------------------------------------------------------------------
Accumulated net investment income                                                               19,617,496
- ------------------------------------------------------------------------------------------------------------
Accumulated net realized loss on investments                                                  (333,349,510)
- ------------------------------------------------------------------------------------------------------------
Net unrealized appreciation on investments                                                     870,856,436
                                                                                         -------------------
NET ASSETS                                                                               $   9,407,472,231
                                                                                         ===================


            53 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF ASSETS AND LIABILITIES Unaudited / Continued
- --------------------------------------------------------------------------------


                                                                                              
- ------------------------------------------------------------------------------------------------------------
NET ASSET VALUE PER SHARE
- ------------------------------------------------------------------------------------------------------------

Class A Shares:
Net asset value and redemption price per share (based on net assets of
$6,644,581,622 and 201,626,858 shares of capital stock outstanding)                              $   32.95
Maximum offering price per share (net asset value plus sales charge of 5.75% of
offering price)                                                                                  $   34.96
- ------------------------------------------------------------------------------------------------------------
Class B Shares:
Net asset value, redemption price (excludes applicable contingent deferred sales
charge) and offering price per share (based on net assets of $ 902,773,987 and
28,275,788 shares of capital stock outstanding)                                                  $   31.93
- ------------------------------------------------------------------------------------------------------------
Class C Shares:
Net asset value, redemption price (excludes applicable contingent deferred sales
charge) and offering price per share (based on net assets of $ 907,681,762 and
28,555,350 shares of capital stock outstanding)                                                  $   31.79
- ------------------------------------------------------------------------------------------------------------
Class N Shares:
Net asset value, redemption price (excludes applicable contingent deferred sales
charge) and offering price per share (based on net assets of $ 196,899,398 and
6,065,932 shares of capital stock outstanding)                                                   $   32.46
- ------------------------------------------------------------------------------------------------------------
Class Y Shares:
Net asset value, redemption price and offering price per share (based on net
assets of $ 755,535,462 and 22,843,500 shares of capital stock outstanding)                      $   33.07


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            54 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF OPERATIONS Unaudited
- --------------------------------------------------------------------------------

For the Six Months Ended February 29, 2008


                                                           
- -------------------------------------------------------------------------------
INVESTMENT INCOME
- -------------------------------------------------------------------------------

Dividends:
Unaffiliated companies                                        $   104,837,192
Affiliated companies                                                1,087,999
- -------------------------------------------------------------------------------
Interest                                                              244,716
- -------------------------------------------------------------------------------
Portfolio lending fees                                                826,993
- -------------------------------------------------------------------------------
Other income                                                          299,162
                                                              -----------------
Total investment income                                           107,296,062

- -------------------------------------------------------------------------------
EXPENSES
- -------------------------------------------------------------------------------

Management fees                                                    24,759,063
- -------------------------------------------------------------------------------
Distribution and service plan fees:
Class A                                                             9,325,005
Class B                                                             5,376,504
Class C                                                             5,252,611
Class N                                                               556,926
- -------------------------------------------------------------------------------
Transfer and shareholder servicing agent fees:
Class A                                                             6,813,291
Class B                                                               839,844
Class C                                                               893,847
Class N                                                               212,584
Class Y                                                               102,498
- -------------------------------------------------------------------------------
Shareholder communications:
Class A                                                               618,304
Class B                                                               189,587
Class C                                                                68,492
Class N                                                                 7,106
Class Y                                                                   279
- -------------------------------------------------------------------------------
Custodian fees and expenses                                            98,186
- -------------------------------------------------------------------------------
Directors' compensation                                                90,208
- -------------------------------------------------------------------------------
Administration service fees                                               750
- -------------------------------------------------------------------------------
Other                                                                 170,456
                                                              -----------------
Total expenses                                                     55,375,541
Less reduction to custodian expenses                                  (13,181)
Less waivers and reimbursements of expenses                           (22,215)
                                                              -----------------
Net expenses                                                       55,340,145

- -------------------------------------------------------------------------------
NET INVESTMENT INCOME                                              51,955,917


            55 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENT OF OPERATIONS Unaudited / Continued
- --------------------------------------------------------------------------------


                                                                      
- ------------------------------------------------------------------------------------------
REALIZED AND UNREALIZED GAIN (LOSS)
- ------------------------------------------------------------------------------------------

Net realized gain on investments from unaffiliated companies             $    81,113,165
- ------------------------------------------------------------------------------------------
Net change in unrealized appreciation on investments                      (1,449,782,777)

- ------------------------------------------------------------------------------------------
NET DECREASE IN NET ASSETS RESULTING FROM OPERATIONS                     $(1,316,713,695)
                                                                         =================


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            56 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
STATEMENTS OF CHANGES IN NET ASSETS
- --------------------------------------------------------------------------------



                                                                         SIX MONTHS                  YEAR
                                                                              ENDED                 ENDED
                                                                  FEBRUARY 29, 2008            AUGUST 31,
                                                                        (UNAUDITED)                  2007
- -----------------------------------------------------------------------------------------------------------
                                                                                 
- -----------------------------------------------------------------------------------------------------------
OPERATIONS
- -----------------------------------------------------------------------------------------------------------

Net investment income                                            $       51,955,917    $      102,110,196
- -----------------------------------------------------------------------------------------------------------
Net realized gain                                                        81,113,165         1,447,067,738
- -----------------------------------------------------------------------------------------------------------
Net change in unrealized appreciation                                (1,449,782,777)          151,987,534
                                                                 ------------------------------------------
Net increase (decrease) in net assets
resulting from operations                                            (1,316,713,695)        1,701,165,468

- -----------------------------------------------------------------------------------------------------------
DIVIDENDS AND/OR DISTRIBUTIONS TO SHAREHOLDERS
- -----------------------------------------------------------------------------------------------------------

Dividends from net investment income:
Class A                                                                 (85,015,229)          (73,117,391)
Class B                                                                  (2,988,279)             (984,972)
Class C                                                                  (3,918,974)           (2,391,155)
Class N                                                                  (1,895,829)           (1,498,558)
Class Y                                                                 (13,557,437)          (10,050,408)
                                                                 ------------------------------------------
                                                                       (107,375,748)          (88,042,484)

- -----------------------------------------------------------------------------------------------------------
Distributions from net realized gain:
Class A                                                                (950,507,888)         (307,631,500)
Class B                                                                (140,255,676)          (56,774,032)
Class C                                                                (137,226,755)          (45,635,308)
Class N                                                                 (28,180,560)           (8,621,612)
Class Y                                                                (109,217,121)          (28,797,341)
                                                                 ------------------------------------------
                                                                     (1,365,388,000)         (447,459,793)

- -----------------------------------------------------------------------------------------------------------
CAPITAL STOCK TRANSACTIONS
- -----------------------------------------------------------------------------------------------------------

Net increase (decrease) in net assets
resulting from capital stock transactions:
Class A                                                                 584,504,448          (477,905,838)
Class B                                                                 (31,022,966)         (385,057,480)
Class C                                                                  53,272,507           (95,608,923)
Class N                                                                  16,381,800             8,020,928
Class Y                                                                  61,322,417           179,390,811
                                                                 ------------------------------------------
                                                                        684,458,206          (771,160,502)

- -----------------------------------------------------------------------------------------------------------
NET ASSETS
- -----------------------------------------------------------------------------------------------------------

Total increase (decrease)                                            (2,105,019,237)          394,502,689
- -----------------------------------------------------------------------------------------------------------
Beginning of period                                                  11,512,491,468        11,117,988,779
                                                                 ------------------------------------------
End of period (including accumulated net investment
income of $19,617,496 and $75,037,327, respectively)
                                                                 $    9,407,472,231    $   11,512,491,468
                                                                 ==========================================


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            57 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------



                                     SIX MONTHS
                                          ENDED
                               FEBRUARY 29,2008                                                           YEAR ENDED AUGUST 31,
CLASS A                             (UNAUDITED)              2007              2006          2005          2004            2003
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                   
PER SHARE OPERATING DATA
- ------------------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning
of period                      $          43.21        $    39.12        $    36.18    $    32.78    $    29.62      $    27.90
- ------------------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment
operations:
Net investment income                       .21 1             .42 1             .35 1         .47 1         .26             .22
Net realized and unrealized
gain (loss)                               (4.77)             5.64              2.96          3.34          3.10            1.69
                               -----------------------------------------------------------------------------------------------------

Total from investment
operations                                (4.56)             6.06              3.31          3.81          3.36            1.91
- ------------------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions
to shareholders:
Dividends from net investment
 income                                    (.47)             (.38)             (.37)         (.41)         (.20)           (.19)
Distributions from net
 realized gain                            (5.23)            (1.59)               --            --            --              --
                               -----------------------------------------------------------------------------------------------------

Total dividends and/or
 distributions to
 shareholders                             (5.70)            (1.97)             (.37)         (.41)         (.20)           (.19)
- ------------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of
period                         $          32.95        $    43.21        $    39.12    $    36.18    $    32.78      $    29.62
                               =====================================================================================================

- ------------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET
VALUE 2                                  (11.90)%           15.90%             9.19%        11.68%        11.37%           6.93%

- ------------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- ------------------------------------------------------------------------------------------------------------------------------------

Net assets, end of period
(in thousands)                 $      6,644,582        $8,015,873        $7,680,186    $7,810,714    $7,384,256      $7,033,312
- ------------------------------------------------------------------------------------------------------------------------------------
Average net assets
(in thousands)                 $      7,609,342        $8,183,830        $7,845,096    $7,759,230    $7,521,103      $6,310,359
- ------------------------------------------------------------------------------------------------------------------------------------
Ratios to average
net assets: 3
Net investment income                      1.08%             1.00%             0.93%         1.36%         0.75%           0.87%
Total expenses                             0.91% 4,5,6       0.89% 4,5,6       0.92% 5       0.92% 5       0.93% 5,7       0.97% 5
- ------------------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                      55%              104%               84%           79%           76%             94%


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 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 less than one full year.

4. Total expenses including indirect expenses from affiliated fund were as
follows:

        
                                             
        Six Months Ended February 29, 2008      0.91%
        Year Ended August 31, 2007              0.89%
        

5. Reduction to custodian expenses less than 0.005%.

6. Voluntary waiver or reimbursement of indirect management fees less than
0.005%.

7. Voluntary waiver of transfer agent fees less than 0.005%.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            58 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III





                                       SIX MONTHS
                                            ENDED
                                 FEBRUARY 29,2008                                                        YEAR ENDED AUGUST 31,
CLASS B                               (UNAUDITED)              2007              2006          2005          2004            2003
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                                     
- -----------------------------------------------------------------------------------------------------------------------------------
PER SHARE OPERATING DATA
- -----------------------------------------------------------------------------------------------------------------------------------

Net asset value, beginning
of period                        $          41.83        $    37.87        $    34.99    $    31.67    $    28.68      $    27.04
- -----------------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment
operations:

Net investment income (loss)                  .06 1             .10 1             .05 1         .20 1        (.21)           (.13)
Net realized and unrealized
gain (loss)                                 (4.62)             5.48              2.86          3.21          3.20            1.77
                                  -------------------------------------------------------------------------------------------------
Total from investment operations            (4.56)             5.58              2.91          3.41          2.99            1.64
- -----------------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions
to shareholders:
Dividends from net
investment income                            (.11)             (.03)             (.03)         (.09)           --              --
Distributions from net
realized gain                               (5.23)            (1.59)               --            --            --              --
                                 --------------------------------------------------------------------------------------------------
Total dividends and/or
distributions to shareholders               (5.34)            (1.62)             (.03)         (.09)           --              --
- -----------------------------------------------------------------------------------------------------------------------------------

Net asset value, end of period   $          31.93        $    41.83        $    37.87    $    34.99    $    31.67      $    28.68
                                 ==================================================================================================

- -----------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET
VALUE 2                                    (12.21)%           15.06%             8.32%        10.79%        10.43%           6.06%
- -----------------------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- -----------------------------------------------------------------------------------------------------------------------------------

Net assets, end of period (in
thousands)                       $        902,774        $1,206,240        $1,453,679    $1,968,829    $2,558,206      $2,941,765
- -----------------------------------------------------------------------------------------------------------------------------------
Average net assets
(in thousands)                   $      1,079,721        $1,354,135        $1,685,648    $2,295,269    $2,884,434      $2,964,666
- -----------------------------------------------------------------------------------------------------------------------------------
Ratios to average net
assets: 3
Net investment income (loss)                 0.33%             0.24%             0.13%         0.59%        (0.10)%          0.04%
Total expenses                               1.66% 4,5,6       1.65% 4,5,6       1.71% 4       1.72% 4       1.78% 4,7       1.81% 4
- -----------------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                        55%              104%               84%           79%           76%             94%


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 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 less than one full year.

4. Reduction to custodian expenses less than 0.005%.

5. Total expenses including indirect expenses from affiliated fund were as
follows:

          
                                               
          Six Months Ended February 29, 2008      1.66%
          Year Ended August 31, 2007              1.65%
          

6. Voluntary waiver or reimbursement of indirect management fees less than
0.005%.

7. Voluntary waiver of transfer agent fees less than 0.005%.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            59 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
FINANCIAL HIGHLIGHTS Continued
- --------------------------------------------------------------------------------



                                  SIX MONTHS
                                       ENDED
                                FEBRUARY 29,
                                        2008                                                                YEAR ENDED AUGUST 31,
CLASS C                          (UNAUDITED)              2007              2006            2005           2004              2003
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                                   
- -----------------------------------------------------------------------------------------------------------------------------------
PER SHARE OPERATING DATA
- -----------------------------------------------------------------------------------------------------------------------------------

Net asset value, beginning
of period                       $     41.71        $     37.81        $     34.98    $     31.71    $     28.69      $      27.03
- -----------------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment
operations:
Net investment income (loss)            .06 1              .11 1              .07 1          .21 1         (.03)               --
Net realized and unrealized
gain (loss)                           (4.60)              5.46               2.85           3.22           3.05              1.66
                                ---------------------------------------------------------------------------------------------------
Total from investment
operations                            (4.54)              5.57               2.92           3.43           3.02              1.66
- -----------------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions
to shareholders:
Dividends from net investment
income                                 (.15)              (.08)              (.09)          (.16)            --                --
Distributions from net
realized gain                         (5.23)             (1.59)                --             --             --                --
                                ---------------------------------------------------------------------------------------------------
Total dividends and/or
distributions
to shareholders                       (5.38)             (1.67)              (.09)          (.16)            --                --
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period  $     31.79        $     41.71        $     37.81    $     34.98    $     31.71       $     28.69
                                ===================================================================================================

- -----------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET
VALUE 2                              (12.21)%            15.09%              8.36%         10.83%         10.53%             6.14%
- -----------------------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- -----------------------------------------------------------------------------------------------------------------------------------

Net assets, end of period
(in thousands)                  $   907,682        $ 1,126,093        $ 1,107,962    $ 1,206,335    $ 1,241,930       $ 1,188,826
- -----------------------------------------------------------------------------------------------------------------------------------
Average net assets
(in thousands)                  $ 1,055,429        $ 1,155,527        $ 1,163,337    $ 1,250,845    $ 1,278,659       $ 1,111,131
- -----------------------------------------------------------------------------------------------------------------------------------
Ratios to average net
assets: 3
Net investment income
(loss)                                 0.34%              0.26%              0.18%          0.62%         (0.01)%            0.09%
Total expenses                         1.65% 4,5,6        1.64% 4,5,6        1.67% 4        1.67% 4        1.70%  4,7        1.74% 4
- -----------------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                  55%               104%                84%            79%            76%               94%


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 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 less than one full year.

4. Reduction to custodian expenses less than 0.005%.

5. Total expenses including indirect expenses from affiliated fund were as
follows:

      
                                               
      Six Months Ended February 29, 2008          1.65%
      Year Ended August 31, 2007                  1.64%
      

6. Voluntary waiver or reimbursement of indirect management fees less than
0.005%.

7. Voluntary waiver of transfer agent fees less than 0.005%.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            60 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III





                                  SIX MONTHS
                                       ENDED
                                FEBRUARY 29,
                                        2008                                                                YEAR ENDED AUGUST 31,
CLASS N                          (UNAUDITED)               2007             2006            2005           2004              2003
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                                    
- -----------------------------------------------------------------------------------------------------------------------------------
PER SHARE OPERATING DATA
- -----------------------------------------------------------------------------------------------------------------------------------

Net asset value, beginning of
period                          $      42.59        $     38.59        $   35.71     $     32.39    $     29.33       $     27.72
- -----------------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment
operations:
Net investment income                    .16 1              .30 1            .24 1           .35 1          .15               .20
Net realized and unrealized
gain (loss)                            (4.71)              5.57             2.92            3.30           3.05              1.65
                                ---------------------------------------------------------------------------------------------------
Total from investment
operations                             (4.55)              5.87             3.16            3.65           3.20              1.85
- -----------------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions
to shareholders:
Dividends from net investment
income                                  (.35)              (.28)            (.28)           (.33)          (.14)             (.24)
Distributions from net
realized gain                          (5.23)             (1.59)              --              --             --                --
                                ---------------------------------------------------------------------------------------------------
Total dividends and/or
distributions
to shareholders                        (5.58)             (1.87)            (.28)           (.33)          (.14)             (.24)
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period  $      32.46        $     42.59        $   38.59     $     35.71    $     32.39       $     29.33
                                ===================================================================================================

- -----------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET
VALUE 2                               (12.01)%            15.59%             8.87%         11.30%         10.93%             6.78%
- -----------------------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- -----------------------------------------------------------------------------------------------------------------------------------

Net assets, end of period (in
thousands)                      $    196,899        $   238,068        $ 207,339     $   177,463    $   150,955       $    79,188
- -----------------------------------------------------------------------------------------------------------------------------------
Average net assets
(in thousands)                  $    224,393        $   232,421        $ 194,639     $   168,866    $   122,478       $    60,950
- -----------------------------------------------------------------------------------------------------------------------------------
Ratios to average net
assets: 3
Net investment income                   0.82%              0.73%            0.63%           1.02%          0.38%             0.65%
Total expenses                          1.16% 4            1.17% 4          1.22%           1.26%          1.31%             1.23%
Expenses after payments,
waivers and/or
reimbursements and reduction
to custodian expenses                   1.16%              1.17%            1.22%           1.26%          1.31%             1.18%
- -----------------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                   55%               104%              84%             79%            76%               94%


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 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 less than one full year.

4. Total expenses including indirect expenses from affiliated fund were as
follows:

      
                                               
      Six Months Ended February 29, 2008          1.16%
      Year Ended August 31, 2007                  1.17%
      

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            61 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
FINANCIAL HIGHLIGHTS Continued
- --------------------------------------------------------------------------------



                                  SIX MONTHS
                                       ENDED
                                FEBRUARY 29,
                                        2008                                                                YEAR ENDED AUGUST 31,
CLASS Y                          (UNAUDITED)               2007             2006            2005           2004              2003
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                                    
- -----------------------------------------------------------------------------------------------------------------------------------
PER SHARE OPERATING DATA
- -----------------------------------------------------------------------------------------------------------------------------------

Net asset value, beginning of
period                          $      43.45        $     39.33        $   36.38     $     32.93    $     29.75       $     28.02
- -----------------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment
operations:
Net investment income                    .29 1              .60 1            .52 1           .64 1          .34               .11
Net realized and unrealized
gain (loss)                            (4.79)              5.67             2.96            3.34           3.13              1.86
                                ---------------------------------------------------------------------------------------------------
Total from investment
operations                             (4.50)              6.27             3.48            3.98           3.47              1.97
- -----------------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions
to shareholders:
Dividends from net investment
income                                  (.65)              (.56)            (.53)           (.53)          (.29)             (.24)
Distributions from net
realized gain                          (5.23)             (1.59)              --              --             --                --
                                ---------------------------------------------------------------------------------------------------
Total dividends and/or
distributions
to shareholders                        (5.88)             (2.15)            (.53)           (.53)          (.29)             (.24)
- -----------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period  $      33.07        $     43.45        $   39.33     $     36.38    $     32.93       $     29.75
                                ===================================================================================================

- -----------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET
VALUE 2                               (11.72)%            16.40%            9.63%          12.15%         11.69%             7.11%
- -----------------------------------------------------------------------------------------------------------------------------------

- -----------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- -----------------------------------------------------------------------------------------------------------------------------------

Net assets, end of period (in
thousands)                      $    755,535        $   926,217        $ 668,823     $   483,532    $   570,991       $   441,460
- -----------------------------------------------------------------------------------------------------------------------------------
Average net assets
(in thousands)                  $    890,557        $   844,472        $ 594,018     $   496,349    $   558,130       $   242,029
- -----------------------------------------------------------------------------------------------------------------------------------
Ratios to average net
assets: 3
Net investment income                   1.49%              1.42%            1.38%           1.82%          1.07%             1.01%
Total expenses                          0.49% 4            0.48% 4          0.49%           0.53%          0.60%             0.87%
Expenses after payments,
waivers and/or
reimbursements and reduction
to custodian expenses                   0.49%              0.48%            0.49%           0.53%          0.60%             0.83%
- -----------------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                   55%               104%              84%             79%            76%               94%


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 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 less than one full year.

4. Total expenses including indirect expenses from affiliated fund were as
follows:

      
                                             
      Six Months Ended February 29, 2008        0.49%
      Year Ended August 31, 2007                0.48%
      

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.

            62 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
NOTES TO FINANCIAL STATEMENTS Unaudited
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
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 adviser 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 72
months 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 trading. Securities may be
valued primarily using dealer-supplied valuations or a portfolio pricing service
authorized by the Board of Directors. Securities traded on a registered U.S.
securities exchange 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 whose principal exchange is NASDAQ R are valued based on the closing
price reported by NASDAQ prior to the time when the Fund's assets are valued. In
the absence of a sale, the security is valued at the last sale price on the
prior trading day, if it is within the spread of the closing "bid" and "asked"
prices, and if not, at the closing bid price. Securities traded on foreign
exchanges are valued based on the last sale price on the principal exchange on
which the security is traded, as identified by the portfolio pricing service,
prior to the time when the Fund's assets are valued. In the absence of a sale,
the security is valued at the official closing price on the principal exchange.
Corporate, government and municipal debt instruments having a remaining maturity
in excess of sixty days and all mortgage-backed securities, collateralized
mortgage obligations and other asset-backed securities will be valued at the
mean between the "bid" and "asked" prices. Securities for which market
quotations are not readily available are valued at their fair value. Securities
whose values have been materially affected

            63 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
NOTES TO FINANCIAL STATEMENTS Unaudited / Continued
- --------------------------------------------------------------------------------

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

- --------------------------------------------------------------------------------
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. Shares of a
registered investment company that are not traded on an exchange are valued at
the acquired investment company's net asset value per share. "Money market-type"
debt instruments with remaining maturities of sixty days or less are valued at
cost adjusted by the amortization of discount or premium to maturity (amortized
cost), which approximates market value.

- --------------------------------------------------------------------------------
INVESTMENT IN OPPENHEIMER INSTITUTIONAL MONEY MARKET FUND. The Fund is permitted
to invest daily available cash balances in an affiliated money market fund. The
Fund may invest the available cash in Class E shares of Oppenheimer
Institutional Money Market Fund ("IMMF") to seek current income while preserving
liquidity. IMMF is a registered open-end management investment company,
regulated as a money market fund under the Investment Company Act of 1940, as
amended. The Manager is also the investment adviser of IMMF. The Fund's
investment in IMMF is included in the Statement of Investments. As a
shareholder, the Fund is subject to its proportional share of IMMF's Class E
expenses, including its management fee. The Manager will waive fees and/or
reimburse Fund expenses in an amount equal to the indirect management fees
incurred through the Fund's investment in IMMF.

- --------------------------------------------------------------------------------
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. If the seller of the agreement defaults and the value of the
collateral declines, or if the seller enters an insolvency proceeding,
realization of the value of the collateral by the Fund may be delayed or
limited.

- --------------------------------------------------------------------------------
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 Fund files income tax returns in U.S. federal and

            64 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



applicable state jurisdictions. The statute of limitations on the Fund's tax
return filings generally remain open for the three preceding fiscal reporting
period ends.

      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.

      As of February 29, 2008, the Fund had available for federal income tax
purposes an estimated capital loss carryforward of zero. This estimated capital
loss carryforward represents carryforward as of the end of the last fiscal year,
increased for losses deferred under tax accounting rules to the current fiscal
year and is increased or decreased by capital losses or gains realized in the
first six months of the current fiscal year. During the six months ended
February 29, 2008, it is estimated that the Fund will utilize $23,186 of capital
loss carryforward to offset realized capital gains. During the fiscal year ended
August 31, 2007, the Fund utilized $489,935 of capital loss carryforward to
offset capital gains realized in that fiscal year.

      As of August 31, 2007, the Fund had available for federal income tax
purposes post-October foreign currency losses of $23,186.

The approximate 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 February 29, 2008 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.

              
                                           
              Federal tax cost of securities  $ 9,186,746,307
                                              ===============
              Gross unrealized appreciation   $ 1,353,336,898
              Gross unrealized depreciation      (568,079,566)
                                              ---------------
              Net unrealized appreciation     $   785,257,332
                                              ===============
              

- --------------------------------------------------------------------------------
DIRECTORS' COMPENSATION. The Board of Directors has adopted a compensation
deferral 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 compensation deferral plan.

            65 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
NOTES TO FINANCIAL STATEMENTS Unaudited / Continued
- --------------------------------------------------------------------------------

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

DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS. Dividends and distributions to
shareholders, which are determined in accordance with income tax regulations and
may differ from U.S. generally accepted accounting principles, are recorded on
the ex-dividend date. Income and capital gain distributions, if any, are
declared and paid annually or at other times as deemed necessary by the Manager.

- --------------------------------------------------------------------------------
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 is recognized on an accrual basis. Discount and
premium, which are included in interest income on the Statement of Operations,
are amortized or accreted daily.

- --------------------------------------------------------------------------------
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
directors 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 accounting
principles generally accepted in the United States of America 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 increases and
decreases in net assets from operations during the reporting period. Actual
results could differ from those estimates.

            66 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



- --------------------------------------------------------------------------------
2.SHARES OF CAPITAL STOCK

The Fund has authorized 840 million shares of $.01 par value capital stock.
Transactions in shares of capital stock were as follows:



                                           SIX MONTHS ENDED FEBRUARY 29, 2008            YEAR ENDED AUGUST 31, 2007
                                                  SHARES               AMOUNT           SHARES                MOUNT
- ---------------------------------------------------------------------------------------------------------------------
                                                                                       
CLASS A
Sold                                          11,228,474       $  449,382,400       20,628,969     $    853,510,126
Dividends and/or distributions reinvested     26,435,944          969,164,618        8,913,226          355,994,212
Redeemed                                     (21,527,701)        (834,042,570)     (40,383,161)      (1,687,410,176)
                                             ------------------------------------------------------------------------
Net increase (decrease)                       16,136,717       $  584,504,448      (10,840,966)    $   (477,905,838)
                                             ========================================================================

- ---------------------------------------------------------------------------------------------------------------------
CLASS B
Sold                                           1,311,588       $   48,982,229        3,060,604     $    123,359,939
Dividends and/or distributions reinvested      3,884,990          138,227,863        1,421,750           55,277,609
Redeemed                                      (5,756,869)        (218,233,058)     (14,028,498)        (563,695,028)
                                             ------------------------------------------------------------------------
Net decrease                                    (560,291)      $  (31,022,966)      (9,546,144)    $   (385,057,480)
                                             ========================================================================

- ---------------------------------------------------------------------------------------------------------------------
CLASS C
Sold                                           1,194,912       $   44,455,266        2,308,996     $     92,663,359
Dividends and/or distributions reinvested      3,503,853          124,106,488        1,087,129           42,137,114
Redeemed                                      (3,142,883)        (115,289,247)      (5,696,274)        (230,409,396)
                                             ------------------------------------------------------------------------
Net increase (decrease)                        1,555,882       $   53,272,507       (2,300,149)    $    (95,608,923)
                                             ========================================================================

- ---------------------------------------------------------------------------------------------------------------------
CLASS N
Sold                                             744,971       $   28,215,889        1,607,897     $     65,689,791
Dividends and/or distributions reinvested        805,032           29,085,424          249,507            9,840,578
Redeemed                                      (1,074,427)         (40,919,513)      (1,640,570)         (67,509,441)
                                             ------------------------------------------------------------------------
Net increase                                     475,576       $   16,381,800          216,834     $      8,020,928
                                             ========================================================================

- ---------------------------------------------------------------------------------------------------------------------
CLASS Y
Sold                                           4,903,773       $  200,869,475        9,204,931     $    387,484,627
Dividends and/or distributions reinvested      3,208,722          117,920,549          944,172           37,804,657
Redeemed                                      (6,584,694)        (257,467,607)      (5,837,620)        (245,898,473)
                                             ------------------------------------------------------------------------
Net increase                                   1,527,801       $   61,322,417        4,311,483     $    179,390,811
                                             ========================================================================


            67 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
NOTES TO FINANCIAL STATEMENTS Unaudited / Continued
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
3. PURCHASES AND SALES OF SECURITIES

The aggregate cost of purchases and proceeds from sales of securities, other
than short-term obligations and investments in IMMF, for the six months ended
February 29, 2008, were as follows:



                                 PURCHASES              SALES
- -------------------------------------------------------------
                                       
Investment securities    $   5,930,966,438   $  6,685,833,929


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

MANAGEMENT FEES. Under the investment advisory agreement, the Fund pays the
Manager a management fee based on the daily net assets of the Fund at an annual
rate as shown in the following table:

        
        
        FEE SCHEDULE
        -------------------------------------
                                     
        Up to $200 million              0.65%
        Next $150 million               0.60
        Next $150 million               0.55
        Over $500 million               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.Oppenheimer Funds Services ("OFS"), a division of the
Manager, acts as the transfer and shareholder servicing agent for the Fund. The
Fund pays OFS a per account fee. For the six months ended February 29, 2008, the
Fund paid $9,070,511 to OFS for services to the Fund.

      Additionally, Class Y shares are subject to minimum fees of $10,000
annually 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 (the
"Plan") for Class A shares under Rule 12b-1 of the Investment Company Act of
1940. Under the Plan, the Fund 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 service 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.

            68 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



- --------------------------------------------------------------------------------
DISTRIBUTION AND SERVICE PLANS FOR CLASS B, CLASS C AND CLASS N SHARES. The Fund
has adopted Distribution and Service Plans (the "Plans") for Class B, Class C
and Class N shares under Rule 12b-1 of the Investment Company Act of 1940 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 Plans at December 31, 2007 for Class B, Class C and Class N
shares were $16,887,485, $38,299,606 and $3,792,288, 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
SIX MONTHS ENDED       DISTRIBUTOR     DISTRIBUTOR     DISTRIBUTOR     DISTRIBUTOR     DISTRIBUTOR
- --------------------------------------------------------------------------------------------------
                                                                      
February 29, 2008    $     811,213   $       5,231   $     856,370   $      20,039   $       3,976


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

      The Manager will waive fees and/or reimburse Fund expenses in an amount
equal to the indirect management fees incurred through the Fund's investment in
IMMF. During the six months ended February 29, 2008, the Manager waived $22,215
for IMMF management fees.

- --------------------------------------------------------------------------------
5. ILLIQUID SECURITIES

As of February 29, 2008, investments in securities included issues that are
illiquid.Investments may be illiquid because they do not have an active trading
market, making it difficult to value them or dispose of them promptly at an
acceptable price. 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 an applicable footnote
on the Statement of Investments.

            69 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



OPPENHEIMER MAIN STREET FUND (UNDERLYING FUND)
NOTES TO FINANCIAL STATEMENTS Unaudited / Continued
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
6. SECURITIES LENDING

The Fund lends portfolio securities from time to time in order to earn
additional income in the form of fees or interest on securities received as
collateral or the investment of any cash received as collateral. The loans are
secured by collateral (either securities, letters of credit, or cash) in an
amount not less than 100% of the market value of the loaned securities during
the period of the loan. The market value of the loaned securities is determined
at the close of each business day and any additional required collateral is
delivered to the Fund on the next business day. If the borrower defaults on its
obligation to return the securities loaned because of insolvency or other
reasons, the Fund could experience delays and cost in recovering the securities
loaned or in gaining access to the collateral. 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 and recognizes the gain
or loss in the fair value of the securities loaned that may occur during the
term of the loan. The Fund has the right under the lending agreement to recover
the securities from the borrower on demand. As of February 29, 2008, the Fund
had on loan securities valued at $524,178,455. Collateral of $558,478,892 was
received for the loans, all of which was received in cash and subsequently
invested in approved instruments.

- --------------------------------------------------------------------------------
7. RECENT ACCOUNTING PRONOUNCEMENT

In September 2006, Financial Accounting Standards Board ("FASB") issued
Statement of Financial Accounting Standards ("SFAS") No. 157, Fair Value
Measurements. This standard establishes a single authoritative definition of
fair value, sets out a framework for measuring fair value and expands
disclosures about fair value measurements. SFAS No. 157 applies to fair value
measurements already required or permitted by existing standards. SFAS No. 157
is effective for financial statements issued for fiscal years beginning after
November 15, 2007, and interim periods within those fiscal years. As of February
29, 2008, the Manager does not believe the adoption of SFAS No. 157 will
materially impact the financial statement amounts; however, additional
disclosures may be required about the inputs used to develop the measurements
and the effect of certain of the measurements on changes in net assets for the
period.

            70 | OPPENHEIMER PRINCIPAL PROTECTED MAIN STREET FUND III



ITEM 2.  CODE OF ETHICS.

Not applicable to semiannual reports.


ITEM 3.  AUDIT COMMITTEE FINANCIAL EXPERT.

Not applicable to semiannual reports.


ITEM 4.  PRINCIPAL ACCOUNTANT FEES AND SERVICES.

Not applicable to semiannual reports.


ITEM 5.  AUDIT COMMITTEE OF LISTED REGISTRANTS

Not applicable.


ITEM 6.  SCHEDULE OF INVESTMENTS.

Not applicable.


ITEM 7.  DISCLOSURE  OF PROXY VOTING  POLICIES  AND  PROCEDURES  FOR  CLOSED-END
MANAGEMENT INVESTMENT COMPANIES.

Not applicable.


ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable.


ITEM 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 02/29/2008, the registrant's principal executive officer and
principal financial officer found the registrant's disclosure controls and
procedures to provide reasonable assurances that information required to be
disclosed by the registrant in the reports that it files under the Securities
Exchange


Act of 1934 (a) is accumulated and communicated to registrant's management,
including its principal executive officer and principal financial officer, to
allow timely decisions regarding required disclosure, and (b) is recorded,
processed, summarized and reported, within the time periods specified in the
rules and forms adopted by the U.S. Securities and Exchange Commission.

There have been no changes in the registrant's internal controls over financial
reporting that occurred during the registrant's second fiscal quarter of the
period covered by this report that have materially affected, or are reasonably
likely to materially affect, the registrant's internal control over financial
reporting.


ITEM 12.  EXHIBITS.

(a) (1) Not applicable to semiannual reports.

    (2) Exhibits attached hereto.

    (3) Not applicable.

(b) Exhibit attached hereto.






                                   SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

Oppenheimer Principal Protected Trust III

By:      /s/ John V. Murphy
         ---------------------------
         John V. Murphy
         Principal Executive Officer
Date:    04/16/2008

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:    04/16/2008

By:      /s/ Brian W. Wixted
         ---------------------------
         Brian W. Wixted
         Principal Financial Officer
Date:    04/16/2008