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 811-4410

                           OPPENHEIMER DISCOVERY FUND
               (Exact name of registrant as specified in charter)

             6803 SOUTH TUCSON WAY, CENTENNIAL, COLORADO 80112-3924
               (Address of principal executive offices) (Zip code)

                              ROBERT G. ZACK, ESQ.
                             OPPENHEIMERFUNDS, INC.
            TWO WORLD FINANCIAL CENTER, NEW YORK, NEW YORK 10281-1008
                     (Name and address of agent for service)

       Registrant's telephone number, including area code: (303) 768-3200

                      Date of fiscal year end: SEPTEMBER 30

           Date of reporting period: OCTOBER 1, 2004 - MARCH 31, 2005

ITEM 1. REPORTS TO STOCKHOLDERS.


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

TOP TEN COMMON STOCK INDUSTRIES
- --------------------------------------------------------------------------------
Health Care Providers & Services                                            8.5%
- --------------------------------------------------------------------------------
Health Care Equipment & Supplies                                            7.2
- --------------------------------------------------------------------------------
Internet Software & Services                                                6.6
- --------------------------------------------------------------------------------
Hotels, Restaurants & Leisure                                               6.5
- --------------------------------------------------------------------------------
IT Services                                                                 6.0
- --------------------------------------------------------------------------------
Semiconductors & Semiconductor Equipment                                    5.1
- --------------------------------------------------------------------------------
Software                                                                    5.0
- --------------------------------------------------------------------------------
Commercial Services & Supplies                                              4.3
- --------------------------------------------------------------------------------
Communications Equipment                                                    4.1
- --------------------------------------------------------------------------------
Specialty Retail                                                            4.0

Portfolio holdings and allocations are subject to change. Percentages are as of
March 31, 2005, and are based on net assets.

TOP TEN COMMON STOCK HOLDINGS
- --------------------------------------------------------------------------------
Children's Place Retail Stores, Inc.                                        2.3%
- --------------------------------------------------------------------------------
Martek Biosciences Corp.                                                    2.1
- --------------------------------------------------------------------------------
Global Payments, Inc.                                                       2.0
- --------------------------------------------------------------------------------
Scientific Games Corp., Cl.A                                                1.7
- --------------------------------------------------------------------------------
Chemed Corp.                                                                1.7
- --------------------------------------------------------------------------------
Cytyc Corp.                                                                 1.7
- --------------------------------------------------------------------------------
FE Networks, Inc.                                                           1.6
- --------------------------------------------------------------------------------
Plantronics, Inc.                                                           1.6
- --------------------------------------------------------------------------------
Intermanetics General Corp.                                                 1.5
- --------------------------------------------------------------------------------
Hyperion Solutions Corp.                                                    1.5

Portfolio holdings and allocations are subject to change. Percentages are as of
March 31, 2005, and are based on net assets.

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


                         9 | OPPENHEIMER DISCOVERY FUND


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

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

SECTOR ALLOCATION

  Information Technology                                     34.3%
    Internet Software & Services                              7.0
    IT Services                                               6.4
    Semiconductors & Semiconductor Equipment                  5.4
    Software                                                  5.3
    Communications Equipment                                  4.3
    Computers & Peripherals                                   3.3
    Electronic Equipment & Instruments                        2.6
  Health Care                                                24.3
  Consumer Discretionary                                     17.2
  Industrials                                                10.5
  Financials                                                  9.4
  Energy                                                      3.6
  Materials                                                   0.6
  Telecommunication Services                                  0.1

Portfolio holdings and allocations are subject to change. Percentages are as of
March 31, 2005, and are based on total value of common stocks.
- --------------------------------------------------------------------------------


                         10 | OPPENHEIMER DISCOVERY FUND



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

Total returns include changes in share price and reinvestment of dividends and
capital gains distributions in a hypothetical investment for the periods shown.
Cumulative total returns are not annualized. The Fund's total returns shown do
not reflect the deduction of income taxes on an individual's investment. Taxes
may reduce your actual investment returns on income or gains paid by the Fund or
any gains you may realize if you sell your shares. INVESTORS SHOULD CONSIDER THE
FUND'S INVESTMENT OBJECTIVES, RISKS, AND OTHER CHARGES AND EXPENSES CAREFULLY
BEFORE INVESTING. THE FUND'S PROSPECTUS CONTAINS THIS AND OTHER INFORMATION
ABOUT THE FUND, AND MAY BE OBTAINED BY ASKING YOUR FINANCIAL ADVISOR, CALLING US
AT 1.800.525.7048 OR VISITING OUR WEBSITE AT WWW.OPPENHEIMERFUNDS.COM. READ THE
PROSPECTUS CAREFULLY BEFORE INVESTING.

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

CLASS A shares of the Fund were first publicly offered on 9/11/86. Unless
otherwise noted, Class A returns include the current maximum initial sales
charge of 5.75%. The Fund's maximum sales charge for Class A shares was lower
prior to 4/4/91, so actual performance may have been higher.

CLASS B shares of the Fund were first publicly offered on 4/4/94. Unless
otherwise noted, Class B returns include the applicable contingent deferred
sales charge of 5% (1-year) and 2% (5-year). Because Class B shares convert to
Class A shares 72 months after purchase, the 10-year return for Class B uses
Class A performance for the period after conversion. Class B shares are subject
to an annual 0.75% asset-based sales charge.

CLASS C shares of the Fund were first publicly offered on 10/2/95. Unless
otherwise noted, Class C returns include the contingent deferred sales charge of
1% for the one-year period. Class C shares are subject to an annual 0.75%
asset-based sales charge.

CLASS N shares of the Fund were first publicly offered on 3/1/01. Class N shares
are offered only through retirement plans. Unless otherwise noted, Class N
returns include the contingent deferred sales charge of 1% for the 1-year
period. Class N shares are subject to an annual 0.25% asset-based sales charge.


                         11 | OPPENHEIMER DISCOVERY FUND



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

CLASS Y shares of the Fund were first publicly offered on 6/1/94. Class Y shares
are offered only to certain institutional investors under special agreement with
the Distributor.

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


                         12 | OPPENHEIMER DISCOVERY FUND



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

FUND EXPENSES. As a shareholder of the Fund, you incur two types of costs: (1)
transaction costs, which may include sales charges (loads) on purchase payments,
contingent deferred sales charges on redemptions; and redemption fees, if any;
and (2) ongoing costs, including management fees; distribution and service fees;
and other Fund expenses. These examples are intended to help you understand your
ongoing costs (in dollars) of investing in the Fund and to compare these costs
with the ongoing costs of investing in other mutual funds.

The examples are based on an investment of $1,000.00 invested at the beginning
of the period and held for the entire 6-month period ended March 31, 2005.

ACTUAL EXPENSES. The "actual" lines of the table provide information about
actual account values and actual expenses. You may use the information on this
line for the class of shares you hold, together with the amount you invested, to
estimate the expense that you paid over the period. Simply divide your account
value by $1,000.00 (for example, an $8,600.00 account value divided by $1,000.00
= 8.60), then multiply the result by the number in the "actual" line under the
heading entitled "Expenses Paid During Period" to estimate the expenses you paid
on your account during this period.

HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES. The "hypothetical" lines of the
table provide information about hypothetical account values and hypothetical
expenses based on the Fund's actual expense ratio for each class of shares, and
an assumed rate of return of 5% per year before expenses, which is not the
Fund's actual return. The hypothetical account values and expenses may not be
used to estimate the actual ending account balance or expenses you paid for the
period. You may use this information to compare the ongoing costs of investing
in the Fund and other funds. To do so, compare this 5% hypothetical example for
the class of shares you hold with the 5% hypothetical examples that appear in
the shareholder reports of the other funds.

Please note that the expenses shown in the table are meant to highlight your
ongoing costs only and do not reflect any transactional costs, such as front-end
or contingent deferred sales charges (loads), redemption fees, or a $12.00 fee
imposed annually on accounts valued at less than $500.00 (subject to


                         13 | OPPENHEIMER DISCOVERY FUND



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

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

                         BEGINNING         ENDING                EXPENSES
                         ACCOUNT           ACCOUNT               PAID DURING
                         VALUE             VALUE                 6 MONTHS ENDED
                         (10/1/04)         (3/31/05)             MARCH 31, 2005
- -------------------------------------------------------------------------------
Class A Actual           $1,000.00         $1,053.40             $ 6.57
- -------------------------------------------------------------------------------
Class A Hypothetical      1,000.00          1,018.55               6.46
- -------------------------------------------------------------------------------
Class B Actual            1,000.00          1,048.80              11.04
- -------------------------------------------------------------------------------
Class B Hypothetical      1,000.00          1,014.21              10.85
- -------------------------------------------------------------------------------
Class C Actual            1,000.00          1,049.00              10.83
- -------------------------------------------------------------------------------
Class C Hypothetical      1,000.00          1,014.41              10.65
- -------------------------------------------------------------------------------
Class N Actual            1,000.00          1,051.90               8.06
- -------------------------------------------------------------------------------
Class N Hypothetical      1,000.00          1,017.10               7.93
- -------------------------------------------------------------------------------
Class Y Actual            1,000.00          1,055.10               4.93
- -------------------------------------------------------------------------------
Class Y Hypothetical      1,000.00          1,020.14               4.85

Hypothetical assumes 5% annual return before expenses.

Expenses are equal to the Fund's annualized expense ratio for that class,
multiplied by the average account value over the period, multiplied by 182/365
(to reflect the one-half year period). Those annualized expense ratios based on
the 6-month period ended March 31, 2005 are as follows:

CLASS             EXPENSE RATIOS
- --------------------------------
Class A                1.28%
- --------------------------------
Class B                2.15
- --------------------------------
Class C                2.11
- --------------------------------
Class N                1.57
- --------------------------------
Class Y                0.96

The expense ratios reflect voluntary waivers or reimbursements of expenses by
the Fund's Manager and Transfer Agent 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.


                         14 | OPPENHEIMER DISCOVERY FUND



STATEMENT OF INVESTMENTS  March 31, 2005 / Unaudited
- --------------------------------------------------------------------------------

                                                                           VALUE
                                                       SHARES         SEE NOTE 1
- --------------------------------------------------------------------------------
COMMON STOCKS--94.6%
- --------------------------------------------------------------------------------
CONSUMER DISCRETIONARY--16.3%
- --------------------------------------------------------------------------------
HOTELS, RESTAURANTS & LEISURE--6.5%
Cheesecake Factory,
Inc. (The) 1                                          170,000       $  6,026,500
- --------------------------------------------------------------------------------
Orient-Express
Hotel Ltd.                                            203,400          5,308,740
- --------------------------------------------------------------------------------
P.F. Chang's China
Bistro, Inc. 1                                        185,000         11,063,000
- --------------------------------------------------------------------------------
Penn National
Gaming, Inc. 1                                        272,400          8,003,112
- --------------------------------------------------------------------------------
Scientific Games
Corp., Cl. A 1                                        672,200         15,359,770
- --------------------------------------------------------------------------------
Shuffle Master, Inc. 1                                389,250         11,272,680
                                                                    ------------
                                                                      57,033,802

- --------------------------------------------------------------------------------
HOUSEHOLD DURABLES--2.0%
Hovnanian Enterprises,
Inc., Cl. A 1                                         150,000          7,650,000
- --------------------------------------------------------------------------------
Meritage Homes
Corp. 1                                               100,000          5,892,000
- --------------------------------------------------------------------------------
WCI Communities,
Inc. 1                                                150,000          4,512,000
                                                                    ------------
                                                                      18,054,000

- --------------------------------------------------------------------------------
INTERNET & CATALOG RETAIL--0.9%
Coldwater Creek, Inc. 1                               434,250          8,024,940
- --------------------------------------------------------------------------------
LEISURE EQUIPMENT & PRODUCTS--0.4%
MarineMax, Inc. 1                                     120,000          3,741,600
- --------------------------------------------------------------------------------
MEDIA--0.7%
Imax Corp. 1                                          650,000          6,006,000
- --------------------------------------------------------------------------------
SPECIALTY RETAIL--4.0%
American Eagle
Outfitters, Inc.                                      256,800          7,588,440
- --------------------------------------------------------------------------------
Build-A-Bear-
Workshop, Inc. 1                                      230,000          7,049,500
- --------------------------------------------------------------------------------
Children's Place
Retail Stores, Inc. 1                                 423,800         20,236,450
                                                                    ------------
                                                                      34,874,390

                                                                           VALUE
                                                       SHARES         SEE NOTE 1
- --------------------------------------------------------------------------------
TEXTILES, APPAREL & LUXURY GOODS--1.8%
Deckers Outdoor
Corp. 1                                               104,800       $  3,745,552
- --------------------------------------------------------------------------------
Quicksilver, Inc. 1                                   410,000         11,902,300
                                                                    ------------
                                                                     15,647,852

- --------------------------------------------------------------------------------
ENERGY--3.4%
- --------------------------------------------------------------------------------
ENERGY EQUIPMENT & SERVICES--1.4%
Patterson-UTI
Energy, Inc.                                          250,900          6,277,518
- --------------------------------------------------------------------------------
Todco, Cl. A 1                                        225,000          5,814,000
                                                                    ------------
                                                                     12,091,518

- --------------------------------------------------------------------------------
OIL & GAS--2.0%
Arlington Tankers Ltd.                                268,300          6,305,050
- --------------------------------------------------------------------------------
OMI Corp.                                             250,000          4,787,500
- --------------------------------------------------------------------------------
Range Resources Corp.                                 268,600          6,274,496
- --------------------------------------------------------------------------------
Ship Finance
International Ltd.                                     28,333            575,160
                                                                    ------------
                                                                      17,942,206

- --------------------------------------------------------------------------------
FINANCIALS--8.9%
- --------------------------------------------------------------------------------
CAPITAL MARKETS--1.1%
National Financial
Partners Corp.                                        252,400         10,045,520
- --------------------------------------------------------------------------------
COMMERCIAL BANKS--3.0%
East West
Bancorp, Inc.                                         153,200          5,656,144
- --------------------------------------------------------------------------------
First Niagara
Financial Group, Inc.                                 418,200          5,524,422
- --------------------------------------------------------------------------------
PrivateBancorp, Inc.                                  108,700          3,414,267
- --------------------------------------------------------------------------------
Signature Bank 1                                      203,500          5,394,785
- --------------------------------------------------------------------------------
Westcorp                                              149,500          6,316,375
                                                                    ------------
                                                                     26,305,993

- --------------------------------------------------------------------------------
CONSUMER FINANCE--0.9%
First Marblehead
Corp. (The) 1                                         135,000          7,766,550
- --------------------------------------------------------------------------------
DIVERSIFIED FINANCIAL SERVICES--2.1%
CapitalSource, Inc. 1                                 213,900          4,919,700
- --------------------------------------------------------------------------------
Investors Financial
Services Corp.                                        233,500         11,420,485


                         15 | OPPENHEIMER DISCOVERY FUND



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

                                                                           VALUE
                                                       SHARES         SEE NOTE 1
- --------------------------------------------------------------------------------
DIVERSIFIED FINANCIAL SERVICES Continued
MarketAxess
Holdings, Inc. 1                                      150,000       $  1,675,500
                                                                    ------------
                                                                      18,015,685
- --------------------------------------------------------------------------------
REAL ESTATE--0.9%
Newcastle
Investment Corp.                                      265,500          7,858,800
- --------------------------------------------------------------------------------
THRIFTS & MORTGAGE FINANCE--0.9%
Commercial Capital
Bancorp, Inc.                                         400,433          8,148,818
- --------------------------------------------------------------------------------
HEALTH CARE--23.0%
- --------------------------------------------------------------------------------
BIOTECHNOLOGY--3.7%
Martek Biosciences
Corp. 1                                               312,364         18,176,461
- --------------------------------------------------------------------------------
Sepracor, Inc. 1                                      150,000          8,611,500
- --------------------------------------------------------------------------------
VaxGen, Inc. 1                                        360,500          4,499,040
- --------------------------------------------------------------------------------
VaxGen, Inc. 2                                         75,470            792,246
                                                                    ------------
                                                                      32,079,247

- --------------------------------------------------------------------------------
HEALTH CARE EQUIPMENT & SUPPLIES--7.2%
Advanced Medical
Optics, Inc. 1                                        173,100          6,267,951
- --------------------------------------------------------------------------------
Cytyc Corp. 1                                         640,600         14,740,206
- --------------------------------------------------------------------------------
Gen-Probe, Inc. 1                                     261,600         11,656,896
- --------------------------------------------------------------------------------
Inamed Corp. 1                                        139,600          9,755,248
- --------------------------------------------------------------------------------
Intermagnetics
General Corp. 1                                       544,200         13,245,828
- --------------------------------------------------------------------------------
IntraLase Corp. 1                                      82,100          1,374,354
- --------------------------------------------------------------------------------
Symmetry
Medical, Inc. 1                                        19,400            368,988
- --------------------------------------------------------------------------------
Ventana Medical
Systems, Inc. 1                                       160,000          5,993,600
                                                                    ------------
                                                                      63,403,071
- --------------------------------------------------------------------------------
HEALTH CARE PROVIDERS & SERVICES--8.5%
Amedisys, Inc. 1                                      224,600          6,794,150
- --------------------------------------------------------------------------------
American
Healthways, Inc. 1                                    180,000          5,943,600
- --------------------------------------------------------------------------------
Chemed Corp.                                          200,000         15,296,000
- --------------------------------------------------------------------------------
Covance, Inc. 1                                       175,000          8,331,750
- --------------------------------------------------------------------------------
PRA International 1                                    19,900            535,907
- --------------------------------------------------------------------------------
Psychiatric
Solutions, Inc. 1                                     260,700         11,992,200

                                                                           VALUE
                                                       SHARES         SEE NOTE 1
- --------------------------------------------------------------------------------
HEALTH CARE PROVIDERS & SERVICES Continued
SFBC International,
Inc. 1                                                189,800       $  6,688,552
- --------------------------------------------------------------------------------
United Surgical
Partners International,
Inc. 1                                                165,200          7,561,204
- --------------------------------------------------------------------------------
Ventiv Health, Inc. 1                                 300,000          6,900,000
- --------------------------------------------------------------------------------
WellCare Health
Plans, Inc. 1                                         169,100          5,150,786
                                                                    ------------
                                                                      75,194,149

- --------------------------------------------------------------------------------
PHARMACEUTICALS--3.6%
Able Laboratories, Inc. 1                             411,000          9,642,060
- --------------------------------------------------------------------------------
DOV Pharmaceutical,
Inc. 1                                                501,600          6,861,888
- --------------------------------------------------------------------------------
Nektar Therapeutics 1                                 350,000          4,879,000
- --------------------------------------------------------------------------------
NitroMed, Inc.                                        327,700          5,672,487
- --------------------------------------------------------------------------------
Vicuron
Pharmaceuticals, Inc. 1                               300,000          4,728,000
                                                                    ------------
                                                                      31,783,435

- --------------------------------------------------------------------------------
INDUSTRIALS--10.0%
- --------------------------------------------------------------------------------
AIR FREIGHT & LOGISTICS--0.6%
Forward Air Corp. 1                                   120,000          5,109,600
- --------------------------------------------------------------------------------
COMMERCIAL SERVICES & SUPPLIES--4.3%
Corporate Executive
Board Co.                                             179,600         11,485,420
- --------------------------------------------------------------------------------
Laureate Education,
Inc. 1                                                230,000          9,841,700
- --------------------------------------------------------------------------------
Resources
Connection, Inc. 1                                    224,900          4,707,157
- --------------------------------------------------------------------------------
Strayer Education, Inc.                               105,000         11,898,600
                                                                    ------------

                                                                      37,932,877
- --------------------------------------------------------------------------------
ELECTRICAL EQUIPMENT--1.4%
Energy Conversion
Devices, Inc. 1                                       150,000          3,409,500
- --------------------------------------------------------------------------------
Energy Conversion
Devices, Inc. 1                                       250,000          5,388,847
- --------------------------------------------------------------------------------
Evergreen Solar, Inc. 1                               468,700          3,313,709
                                                                    ------------
                                                                      12,112,056


                         16 | OPPENHEIMER DISCOVERY FUND



                                                                           VALUE
                                                       SHARES         SEE NOTE 1
- --------------------------------------------------------------------------------
MACHINERY--1.2%
Joy Global, Inc.                                      312,500       $ 10,956,250
- --------------------------------------------------------------------------------
MARINE--1.5%
UTI Worldwide, Inc.                                   185,300         12,869,085
- --------------------------------------------------------------------------------
ROAD & RAIL--1.0%
Yellow Roadway
Corp. 1                                               150,000          8,781,000
- --------------------------------------------------------------------------------
INFORMATION TECHNOLOGY--32.4%
- --------------------------------------------------------------------------------
COMMUNICATIONS EQUIPMENT--4.1%
Airspan Networks,
Inc. 1                                                520,000          2,657,200
- --------------------------------------------------------------------------------
Brocade
Communications
Systems, Inc. 1                                       888,200          5,258,144
- --------------------------------------------------------------------------------
F5 Networks, Inc. 1                                   276,900         13,980,681
- --------------------------------------------------------------------------------
Plantronics, Inc.                                     362,200         13,792,576
                                                                    ------------
                                                                      35,688,601

- --------------------------------------------------------------------------------
COMPUTERS & PERIPHERALS--3.1%
Avid Technology, Inc. 1                               238,100         12,885,972
- --------------------------------------------------------------------------------
M-Systems Flash
Disk Pioneers Ltd. 1                                  364,500          8,033,580
- --------------------------------------------------------------------------------
Stratasys, Inc. 1                                     232,300          6,581,059
                                                                    ------------
                                                                      27,500,611

- --------------------------------------------------------------------------------
ELECTRONIC EQUIPMENT & INSTRUMENTS--2.5%
Aeroflex, Inc. 1                                      1,059,400        9,884,202
- --------------------------------------------------------------------------------
Trimble
Navigation Ltd. 1                                     356,200         12,043,122
                                                                    ------------
                                                                      21,927,324

- --------------------------------------------------------------------------------
INTERNET SOFTWARE & SERVICES--6.6%
Aladdin Knowledge
Systems Ltd. 1                                        320,800          7,291,784
- --------------------------------------------------------------------------------
Digital River, Inc. 1                                 247,700          7,718,332
- --------------------------------------------------------------------------------
Digitas, Inc. 1                                       512,100          5,172,210
- --------------------------------------------------------------------------------
Greenfield Online, Inc. 1                             478,200          9,396,630
- --------------------------------------------------------------------------------
InfoSpace, Inc. 1                                     210,000          8,574,300
- --------------------------------------------------------------------------------
j2 Global
Communications, Inc. 1                                126,400          4,336,784
- --------------------------------------------------------------------------------
Netease.com, Inc.,
ADR 1                                                 106,400          5,129,544
- --------------------------------------------------------------------------------
VeriSign, Inc. 1                                      370,100         10,621,870
                                                                    ------------
                                                                      58,241,454

                                                                           VALUE
                                                       SHARES         SEE NOTE 1
- --------------------------------------------------------------------------------
IT SERVICES--6.0%
Cognizant Technology
Solutions Corp. 1                                     135,200       $  6,246,240
- --------------------------------------------------------------------------------
Euronet Worldwide,
Inc. 1                                                425,000         12,133,750
- --------------------------------------------------------------------------------
Global Payments, Inc.                                 280,000         18,057,200
- --------------------------------------------------------------------------------
NAVTEQ Corp. 1                                        100,000          4,335,000
- --------------------------------------------------------------------------------
SRA International,
Inc., Cl. A 1                                         201,200         12,122,300
                                                                    ------------
                                                                      52,894,490

- --------------------------------------------------------------------------------
SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT--5.1%
ATI Technologies, Inc. 1                              507,900          8,766,355
- --------------------------------------------------------------------------------
Exar Corp. 1                                          438,100          5,870,540
- --------------------------------------------------------------------------------
Integrated Device
Technology, Inc. 1                                    417,000          5,016,510
- --------------------------------------------------------------------------------
Microsemi Corp. 1                                     545,800          8,891,082
- --------------------------------------------------------------------------------
ON Semiconductor
Corp. 1                                               845,600          3,340,120
- --------------------------------------------------------------------------------
Skyworks Solutions,
Inc. 1                                              1,219,100          7,741,285
- --------------------------------------------------------------------------------
Tessera Technologies,
Inc. 1                                                125,000          5,403,750
                                                                    ------------
                                                                      45,029,642

- --------------------------------------------------------------------------------
SOFTWARE--5.0%
Hyperion Solutions
Corp. 1                                               300,000         13,233,000
- --------------------------------------------------------------------------------
Macromedia, Inc. 1                                    318,600         10,673,100
- --------------------------------------------------------------------------------
Mercury
Interactive Corp. 1                                   196,300          9,300,694
- --------------------------------------------------------------------------------
Wind River
Systems, Inc. 1                                       718,700         10,837,996
                                                                    ------------
                                                                      44,044,790

- --------------------------------------------------------------------------------
MATERIALS--0.5%
- --------------------------------------------------------------------------------
METALS & MINING--0.5%
Alliance Resource
Partners LP                                            72,600          4,666,728
- --------------------------------------------------------------------------------
TELECOMMUNICATION SERVICES--0.1%
- --------------------------------------------------------------------------------
DIVERSIFIED TELECOMMUNICATION SERVICES--0.0%
Arbinet-thexchange,
Inc. 1                                                 17,300            329,565


                         17 | OPPENHEIMER DISCOVERY FUND



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

                                                                           VALUE
                                                       SHARES         SEE NOTE 1
- --------------------------------------------------------------------------------
WIRELESS TELECOMMUNICATION SERVICES--0.1%
InPhonic, Inc. 1                                       15,000       $    340,725
                                                                    ------------
Total Common Stocks
(Cost $719,033,522)                                                  832,442,374
- --------------------------------------------------------------------------------
PREFERRED STOCKS--0.0%
- --------------------------------------------------------------------------------
Candescent Technologies Corp.:
$2.50 Cv., Series D,
Vtg. 1,2                                            1,200,000                 --
Sr. Exchangeable,
Series E, Vtg. 1,2                                    800,000                 --
Sr. Exchangeable,
Series F, Vtg. 1,2                                    200,000                 --
                                                                    ------------
Total Preferred Stocks
(Cost $8,900,000)

                                                        UNITS
- --------------------------------------------------------------------------------
RIGHTS, WARRANTS AND CERTIFICATES--0.0%
- --------------------------------------------------------------------------------
Discovery Laboratories,
Inc. Wts., Exp. 9/20/10 1,2
(Cost $0)                                             123,908            438,433

                                                       PRINCIPAL           VALUE
                                                          AMOUNT      SEE NOTE 1
- --------------------------------------------------------------------------------
JOINT REPURCHASE AGREEMENTS--4.5%
- --------------------------------------------------------------------------------
Undivided interest of 2.87% in joint repurchase
agreement (Principal Amount/Value $1,365,685,000,
with a maturity value of $1,365,789,323) with
UBS Warburg LLC, 2.75%, dated 3/31/05, to be
repurchased at $39,236,997 on 4/1/05,
collateralized by Federal National Mortgage
Assn., 5%--6%, 2/1/34--8/1/34, with a
value of $1,394,346,245
(Cost $39,234,000)                                 $  39,234,000    $ 39,234,000
- --------------------------------------------------------------------------------
TOTAL INVESTMENTS,
AT VALUE
(COST $767,167,522)                                         99.1%    872,114,807
- --------------------------------------------------------------------------------
OTHER ASSETS
NET OF LIABILITIES                                           0.9       8,267,731

                                                   -----------------------------
NET ASSETS                                                 100.0%   $880,382,538
                                                   =============================

FOOTNOTES TO STATEMENT OF INVESTMENTS

1. Non-income producing security.

2. Illiquid or restricted security. The aggregate value of illiquid or
restricted securities as of March 31, 2005 was $1,230,679, which represents
0.14% of the Fund's net assets, all of which is considered restricted. See Note
5 of Notes to Financial Statements.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


                         18 | OPPENHEIMER DISCOVERY FUND


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



March 31, 2005
- -------------------------------------------------------------------------------------------------------
                                                                                      
ASSETS
- -------------------------------------------------------------------------------------------------------
Investments, at value (cost $767,167,522)--see accompanying statement of investments     $ 872,114,807
- -------------------------------------------------------------------------------------------------------
Cash                                                                                           944,075
- -------------------------------------------------------------------------------------------------------
Receivables and other assets:
Investments sold                                                                            21,146,983
Shares of beneficial interest sold                                                             558,854
Interest and dividends                                                                         343,871
Other                                                                                           29,940
                                                                                         --------------
Total assets                                                                               895,138,530

- -------------------------------------------------------------------------------------------------------
LIABILITIES
- -------------------------------------------------------------------------------------------------------
Payables and other liabilities:
Investments purchased                                                                       11,908,377
Shares of beneficial interest redeemed                                                       1,485,268
Distribution and service plan fees                                                             524,930
Shareholder communications                                                                     260,673
Trustees' compensation                                                                         232,902
Transfer and shareholder servicing agent fees                                                  231,907
Other                                                                                          111,935
                                                                                         --------------
Total liabilities                                                                           14,755,992

- -------------------------------------------------------------------------------------------------------
NET ASSETS                                                                               $ 880,382,538
                                                                                         ==============

- -------------------------------------------------------------------------------------------------------
COMPOSITION OF NET ASSETS
- -------------------------------------------------------------------------------------------------------
Par value of shares of beneficial interest                                               $      21,859
- -------------------------------------------------------------------------------------------------------
Additional paid-in capital                                                                 973,936,267
- -------------------------------------------------------------------------------------------------------
Accumulated net investment loss                                                             (3,761,157)
- -------------------------------------------------------------------------------------------------------
Accumulated net realized loss on investments and foreign currency transactions            (194,761,711)
- -------------------------------------------------------------------------------------------------------
Net unrealized appreciation on investments and translation of assets and
liabilities denominated in foreign currencies                                              104,947,280
                                                                                         --------------
NET ASSETS                                                                               $ 880,382,538
                                                                                         ==============



                         19 | OPPENHEIMER DISCOVERY 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 $668,461,776 and
16,307,369 shares of beneficial interest outstanding)                                             $40.99
Maximum offering price per share (net asset value plus sales charge of 5.75% of offering price)   $43.49
- ---------------------------------------------------------------------------------------------------------
Class B Shares:
Net asset value, redemption price (excludes applicable contingent deferred sales charge)
and offering price per share (based on net assets of $113,364,153 and 3,088,065 shares
of beneficial interest outstanding)                                                               $36.71
- ---------------------------------------------------------------------------------------------------------
Class C Shares:
Net asset value, redemption price (excludes applicable contingent deferred sales charge)
and offering price per share (based on net assets of $42,603,987 and 1,136,328 shares
of beneficial interest outstanding)                                                               $37.49
- ---------------------------------------------------------------------------------------------------------
Class N Shares:
Net asset value, redemption price (excludes applicable contingent deferred sales charge)
and offering price per share (based on net assets of $10,015,447 and 247,223 shares of
beneficial interest outstanding)                                                                  $40.51
- ---------------------------------------------------------------------------------------------------------
Class Y Shares:
Net asset value, redemption price and offering price per share (based on net assets of
$45,937,175 and 1,080,108 shares of beneficial interest outstanding)                              $42.53



SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


                         20 | OPPENHEIMER DISCOVERY FUND



STATEMENT OF OPERATIONS  Unaudited

For the Six Months Ended March 31, 2005
- --------------------------------------------------------------------------------
INVESTMENT INCOME
- --------------------------------------------------------------------------------
Dividends                                                           $ 2,699,502
- --------------------------------------------------------------------------------
Interest                                                                390,625
                                                                    ------------
Total investment income                                               3,090,127

EXPENSES
- --------------------------------------------------------------------------------
Management fees                                                       3,216,810
- --------------------------------------------------------------------------------
Distribution and service plan fees:
Class A                                                                 855,820
Class B                                                                 613,085
Class C                                                                 225,162
Class N                                                                  24,986
- --------------------------------------------------------------------------------
Transfer and shareholder servicing agent fees:
Class A                                                               1,130,760
Class B                                                                 230,517
Class C                                                                  94,747
Class N                                                                  21,543
Class Y                                                                  69,259
- --------------------------------------------------------------------------------
Shareholder communications:
Class A                                                                 145,570
Class B                                                                  60,326
Class C                                                                  12,246
Class N                                                                   1,423
- --------------------------------------------------------------------------------
Custodian fees and expenses                                              30,179
- --------------------------------------------------------------------------------
Trustees' compensation                                                   16,220
- --------------------------------------------------------------------------------
Other                                                                    49,098
                                                                    ------------
Total expenses                                                        6,797,751
Less reduction to custodian expenses                                    (30,179)
Less waivers and reimbursements of expenses                            (148,477)
                                                                    ------------
Net expenses                                                          6,619,095

- --------------------------------------------------------------------------------
NET INVESTMENT LOSS                                                  (3,528,968)


                         21 | OPPENHEIMER DISCOVERY FUND


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



- -----------------------------------------------------------------------------------------
REALIZED AND UNREALIZED GAIN (LOSS)
- -----------------------------------------------------------------------------------------
                                                                         
Net realized gain (loss) on:
Investments                                                                 $ 41,175,193
Foreign currency transactions                                                       (487)
                                                                            -------------
Net realized gain                                                             41,174,706
- -----------------------------------------------------------------------------------------
Net change in unrealized appreciation on:
Investments                                                                   12,532,603
Translation of assets and liabilities denominated in foreign currencies               (5)
                                                                            -------------
Net change in unrealized appreciation                                         12,532,598

- -----------------------------------------------------------------------------------------
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS                        $ 50,178,336
                                                                            =============


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


                         22 | OPPENHEIMER DISCOVERY FUND



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



                                                                   SIX MONTHS                 YEAR
                                                                        ENDED                ENDED
                                                               MARCH 31, 2005        SEPTEMBER 30,
                                                                  (UNAUDITED)                 2004
- ---------------------------------------------------------------------------------------------------
                                                                             
OPERATIONS
- ---------------------------------------------------------------------------------------------------
Net investment loss                                             $  (3,528,968)     $   (11,958,533)
- ---------------------------------------------------------------------------------------------------
Net realized gain                                                  41,174,706          149,359,240
- ---------------------------------------------------------------------------------------------------
Net change in unrealized appreciation                              12,532,598         (132,018,331)
                                                                -----------------------------------
Net increase in net assets resulting from operations               50,178,336            5,382,376

- ---------------------------------------------------------------------------------------------------
BENEFICIAL INTEREST TRANSACTIONS
- ---------------------------------------------------------------------------------------------------
Net increase (decrease) in net assets resulting from
beneficial interest transactions:
Class A                                                           (64,590,183)         (82,148,237)
Class B                                                           (19,042,012)         (36,314,792)
Class C                                                            (4,008,490)          (3,717,413)
Class N                                                              (210,173)           5,620,874
Class Y                                                           (10,097,317)          (3,641,050)

- ---------------------------------------------------------------------------------------------------
NET ASSETS
- ---------------------------------------------------------------------------------------------------
Total decrease                                                    (47,769,839)        (114,818,242)
- ---------------------------------------------------------------------------------------------------
Beginning of period                                               928,152,377        1,042,970,619
                                                                -----------------------------------
End of period (including accumulated net investment loss of
$3,761,157 and $232,189, respectively)                          $ 880,382,538      $   928,152,377
                                                                ===================================


SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


                         23 | OPPENHEIMER DISCOVERY FUND


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



                                              SIX MONTHS                                                                 YEAR
                                                   ENDED                                                                ENDED
                                          MARCH 31, 2005                                                            SEPT. 30,
CLASS A                                      (UNAUDITED)          2004         2003         2002         2001            2000
- --------------------------------------------------------------------------------------------------------------------------------
                                                                                                
PER SHARE OPERATING DATA
- --------------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning of period           $   38.91      $  38.81     $  28.24     $  33.08     $  66.77     $     43.26
- --------------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment loss                                 (.13) 1       (.37)        (.26)        (.22)        (.19)           (.32)
Net realized and unrealized gain (loss)             2.21           .47        10.83        (4.62)      (20.66)          26.72
                                               ---------------------------------------------------------------------------------
Total from investment operations                    2.08           .10        10.57        (4.84)      (20.85)          26.40
- --------------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions
to shareholders:
Distributions from net realized gain                 --             --           --           --       (12.84)          (2.89)
- --------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period                 $  40.99       $  38.91     $  38.81     $  28.24     $  33.08     $     66.77
                                               =================================================================================

- --------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 2                 5.34%          0.26%       37.43%      (14.63)%     (37.01)%         62.15%
- --------------------------------------------------------------------------------------------------------------------------------

- --------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- --------------------------------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)       $668,462       $694,976     $772,420     $572,843     $754,082     $ 1,286,298
- --------------------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)              $707,986       $775,665     $639,170     $753,304     $988,717     $ 1,176,289
- --------------------------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 3
Net investment loss                               (0.62)%        (1.00)%      (0.83)%      (0.74)%      (0.31)%         (0.47)%
Total expenses                                     1.31%          1.29%        1.41%        1.45%        1.25%           1.15%
Expenses after payments and waivers and
reduction to custodian expenses                    1.28%          1.28%        1.35%        1.42%         N/A 4           N/A 4
- --------------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                              89%           135%         172%         143%         155%            224%


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

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

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

4. Reduction to custodian expenses less than 0.01%.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


                         24 | OPPENHEIMER DISCOVERY FUND





                                             SIX MONTHS                                                                  YEAR
                                                  ENDED                                                                 ENDED
                                         MARCH 31, 2005                                                             SEPT. 30,
CLASS B                                     (UNAUDITED)           2004         2003         2002         2001            2000
- --------------------------------------------------------------------------------------------------------------------------------
                                                                                                
PER SHARE OPERATING DATA
- --------------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning of period           $  35.00       $  35.21     $  25.81     $  30.46     $  62.99     $     41.22
- --------------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment loss                                (.27) 1       (1.50)       (1.09)        (.91)        (.29)           (.47)
Net realized and unrealized gain (loss)            1.98           1.29        10.49        (3.74)      (19.40)          25.13
                                               ---------------------------------------------------------------------------------
Total from investment operations                   1.71           (.21)        9.40        (4.65)      (19.69)          24.66
- --------------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions
to shareholders:
Distributions from net realized gain                 --             --           --           --       (12.84)          (2.89)
- --------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period                 $  36.71       $  35.00     $  35.21     $  25.81     $  30.46     $     62.99
                                               =================================================================================

- --------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 2                 4.88%         (0.60)%      36.42%      (15.27)%     (37.48)%         60.95%
- --------------------------------------------------------------------------------------------------------------------------------

- --------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- --------------------------------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)       $113,364       $125,947     $160,851     $154,657     $234,023     $   423,689
- --------------------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)              $123,256       $151,725     $148,410     $223,215     $315,607     $   371,643
- --------------------------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 3
Net investment loss                               (1.48)%        (1.85)%      (1.56)%      (1.50)%      (1.07)%         (1.22)%
Total expenses                                     2.20%          2.20%        2.35%        2.21%        2.01%           1.90%
Expenses after payments and waivers and
reduction to custodian expenses                    2.15%          2.13%        2.10%        2.18%         N/A 4           N/A 4
- --------------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                              89%           135%         172%         143%         155%            224%


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

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

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

4. Reduction to custodian expenses less than 0.01%.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


                         25 | OPPENHEIMER DISCOVERY FUND



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



                                             SIX MONTHS                                                                  YEAR
                                                  ENDED                                                                 ENDED
                                         MARCH 31, 2005                                                             SEPT. 30,
CLASS C                                     (UNAUDITED)           2004         2003         2002         2001            2000
- ---------------------------------------------------------------------------------------------------------------------------------
                                                                                                
PER SHARE OPERATING DATA
- ---------------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning of period        $     35.74       $  35.93     $  26.34     $  31.10     $  64.00     $     41.85
- ---------------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment loss                                (.27) 1        (.82)        (.44)        (.59)        (.24)           (.24)
Net realized and unrealized gain (loss)            2.02            .63        10.03        (4.17)      (19.82)          25.28
                                            -------------------------------------------------------------------------------------
Total from investment operations                   1.75           (.19)        9.59        (4.76)      (20.06)          25.04
- ---------------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions
to shareholders:
Distributions from net realized gain                 --             --           --           --       (12.84)          (2.89)
- ---------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period              $     37.49       $  35.74     $  35.93     $  26.34     $  31.10     $     64.00
                                            =====================================================================================

- ---------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 2                 4.90%         (0.53)%      36.41%      (15.31)%     (37.47)%         60.95%
- ---------------------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- ---------------------------------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)    $    42,604       $ 44,415     $ 48,263     $ 34,673     $ 44,404     $    70,140
- ---------------------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)           $    45,295       $ 49,464     $ 38,930     $ 45,655     $ 56,301     $    55,205
- ---------------------------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 3
Net investment loss                               (1.44)%        (1.80)%      (1.58)%      (1.50)%      (1.07)%         (1.20)%
Total expenses                                     2.21%          2.19%        2.38%        2.21%        2.01%           1.90%
Expenses after payments and waivers and
reduction to custodian expenses                    2.11%          2.09%        2.12%        2.18%         N/A 4           N/A 4
- ---------------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                              89%           135%         172%         143%         155%            224%


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

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

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

4. Reduction to custodian expenses less than 0.01%.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


                         26 | OPPENHEIMER DISCOVERY FUND





                                             SIX MONTHS                                                  YEAR
                                                  ENDED                                                 ENDED
                                         MARCH 31, 2005                                             SEPT. 30,
CLASS N                                     (UNAUDITED)           2004         2003         2002         2001 1
- ----------------------------------------------------------------------------------------------------------------
                                                                                      
PER SHARE OPERATING DATA
- ----------------------------------------------------------------------------------------------------------------
Net asset value, beginning of period             $38.51       $  38.53     $  28.11     $  33.01     $  39.11
- ----------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment loss                                (.18) 2        (.42)        (.35)        (.30)        (.13)
Net realized and unrealized gain (loss)            2.18            .40        10.77        (4.60)       (5.97)
                                                 ---------------------------------------------------------------
Total from investment operations                   2.00           (.02)       10.42        (4.90)       (6.10)
- ----------------------------------------------------------------------------------------------------------------
Dividends and/or distributions to shareholders:
Distributions from net realized gain                 --             --           --           --           --
- ----------------------------------------------------------------------------------------------------------------
Net asset value, end of period                   $40.51       $  38.51     $  38.53     $  28.11     $  33.01
                                                 ===============================================================

- ----------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 3                 5.19%         (0.05)%      37.07%      (14.84)%     (15.60)%
- ----------------------------------------------------------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- ----------------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)         $10,015      $  9,719     $  4,363     $  2,236     $    147
- ----------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)                $10,072      $  7,381     $  3,088     $  1,786     $    105
- ----------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 4
Net investment loss                               (0.90)%        (1.26)%      (1.13)%      (0.97)%      (0.93)%
Total expenses                                     1.67%          1.72%        2.12%        1.68%        1.55%
Expenses after payments and waivers and
reduction to custodian expenses                    1.57%          1.58%        1.65%        1.65%         N/A 5
- ----------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                              89%          135%          172%         143%         155%


1. For the period from March 1, 2001 (inception of offering) to September 30,
2001.

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

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

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

5. Reduction to custodian expenses less than 0.01%.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


                         27 | OPPENHEIMER DISCOVERY FUND



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



                                             SIX MONTHS                                                                  YEAR
                                                  ENDED                                                                 ENDED
                                         MARCH 31, 2005                                                             SEPT. 30,
CLASS Y                                     (UNAUDITED)           2004         2003         2002         2001            2000
- ---------------------------------------------------------------------------------------------------------------------------------
                                                                                                
PER SHARE OPERATING DATA
- ---------------------------------------------------------------------------------------------------------------------------------
Net asset value, beginning of period        $     40.31       $  40.07     $  29.08     $  33.96     $  68.06     $     43.92
- ---------------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment loss                                (.06) 1        (.21)        (.26)        (.06)        (.17)           (.30)
Net realized and unrealized gain (loss)            2.28            .45        11.25        (4.82)      (21.09)          27.33
                                            -------------------------------------------------------------------------------------
Total from investment operations                   2.22            .24        10.99        (4.88)      (21.26)          27.03
- ---------------------------------------------------------------------------------------------------------------------------------
Dividends and/or distributions
to shareholders:
Distributions from net realized gain                 --             --           --           --       (12.84)          (2.89)
- ---------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period              $     42.53       $  40.31     $  40.07     $  29.08     $  33.96     $     68.06
                                            =====================================================================================

- ---------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN, AT NET ASSET VALUE 2                 5.51%          0.60%       37.79%      (14.37)%     (36.88)%         62.68%
- ---------------------------------------------------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
- ---------------------------------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)    $    45,937       $ 53,096     $ 57,074     $ 38,444     $ 50,125     $    87,131
- ---------------------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)           $    49,850       $ 61,766     $ 43,531     $ 50,275     $ 64,264     $    76,635
- ---------------------------------------------------------------------------------------------------------------------------------
Ratios to average net assets: 3
Net investment loss                               (0.29)%        (0.67)%      (0.57)%      (0.43)%      (0.13)%         (0.11)%
Total expenses                                     0.98%          0.95%        1.16%        1.26%        1.14%           0.80%
Expenses after payments and waivers and
reduction to custodian expenses                    0.96%           N/A 4       1.10%        1.11%        1.06%            N/A 4
- ---------------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate                              89%           135%         172%         143%         155%            224%


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

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

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

4. Reduction to custodian expenses less than 0.01%.

SEE ACCOMPANYING NOTES TO FINANCIAL STATEMENTS.


                         28 | OPPENHEIMER DISCOVERY FUND



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

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

Oppenheimer Discovery Fund (the Fund) is registered under the Investment Company
Act of 1940, as amended, as an open-end management investment company. The
Fund's investment objective is to seek capital appreciation. The Fund's
investment advisor is OppenheimerFunds, Inc. (the Manager).

      The Fund offers Class A, Class B, Class C, Class N and Class Y shares.
Class A shares are sold at their offering price, which is normally net asset
value plus a front-end sales charge. Class B, Class C and Class N shares are
sold without a front-end sales charge but may be subject to a contingent
deferred sales charge (CDSC). Class N shares are sold only through retirement
plans. Retirement plans that offer Class N shares may impose charges on those
accounts. Class Y shares are sold to certain institutional investors without
either a front-end sales charge or a CDSC, however, the institutional investor
may impose charges on those accounts. All classes of shares have identical
rights and voting privileges with respect to the Fund in general and exclusive
voting rights on matters that affect that class alone. Earnings, net assets and
net asset value per share may differ due to each class having its own expenses,
such as transfer and shareholder servicing agent fees and shareholder
communications, directly attributable to that class. Class A, B, C and N have
separate distribution and/or service plans. No such plan has been adopted for
Class Y shares. Class B shares will automatically convert to Class A shares six
years after the date of purchase. The Fund assesses a 2% fee on the proceeds of
fund shares that are redeemed (either by selling or exchanging to another
Oppenheimer fund) within 30 days of their purchase. The fee, which is retained
by the Fund, is accounted for as an addition to paid-in capital.

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

- -------------------------------------------------------------------------------
SECURITIES VALUATION. The Fund calculates the net asset value of its shares as
of the close of The New York Stock Exchange (the Exchange), normally 4:00 P.M.
Eastern time, on each day the Exchange is open for business. Securities listed
or traded on National Stock Exchanges or other domestic or foreign exchanges are
valued based on the last sale price of the security traded on that exchange
prior to the time when the Fund's assets are valued. Securities traded on NASDAQ
are valued based on the closing price provided by NASDAQ prior to the time when
the Fund's assets are valued. In the absence of a sale, the security is valued
at the last sale price on the prior trading day, if it is within the spread of
the closing bid and asked prices, and if not, at the closing bid price.
Corporate, government and municipal debt instruments having a remaining maturity
in excess of sixty days and all mortgage-backed securities will be valued at the
mean between the "bid" and "asked" prices. Securities may be valued primarily
using dealer-supplied valuations or a portfolio pricing service authorized by
the Board of Trustees. Securities (including restricted securities) for which
market quotations are not readily available are valued at their fair value.
Foreign and domestic securities whose values have been materially affected by
what the Manager identifies as a significant event occurring before


                         29 | OPPENHEIMER DISCOVERY FUND



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

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

the Fund's assets are valued but after the close of their respective exchanges
will be fair valued. Fair value is determined in good faith using consistently
applied procedures under the supervision of the Board of Trustees. Short-term
"money market type" debt securities with remaining maturities of sixty days or
less are valued at amortized cost (which approximates market value).

- --------------------------------------------------------------------------------
FOREIGN CURRENCY TRANSLATION. The Fund's accounting records are maintained in
U.S. dollars. The values of securities denominated in foreign currencies and
amounts related to the purchase and sale of foreign securities and foreign
investment income are translated into U.S. dollars as of the close of The New
York Stock Exchange (the Exchange), normally 4:00 P.M. Eastern time, on each day
the Exchange is open for business. Foreign exchange rates may be valued
primarily using dealer supplied valuations or a portfolio pricing service
authorized by the Board of Trustees.

      Reported net realized foreign exchange gains or losses arise from sales of
portfolio securities, sales and maturities of short-term securities, sales of
foreign currencies, currency gains or losses realized between the trade and
settlement dates on securities transactions, and the difference between the
amounts of dividends, interest, and foreign withholding taxes recorded on the
Fund's books and the U.S. dollar equivalent of the amounts actually received or
paid. Net unrealized foreign exchange gains and losses arise from changes in the
values of assets and liabilities, including investments in securities at fiscal
period end, resulting from changes in exchange rates.

      The effect of changes in foreign currency exchange rates on investments is
separately identified from the fluctuations arising from changes in market
values of securities held and reported with all other foreign currency gains and
losses in the Fund's Statement of Operations.

- --------------------------------------------------------------------------------
JOINT REPURCHASE AGREEMENTS. Pursuant to an Exemptive Order issued by the
Securities and Exchange Commission, the Fund, along with other affiliated funds
advised by the Manager, may transfer uninvested cash balances into joint trading
accounts on a daily basis. These balances are invested in one or more repurchase
agreements. Securities pledged as collateral for repurchase agreements are held
by a custodian bank until the agreements mature. Each agreement requires that
the market value of the collateral be sufficient to cover payments of interest
and principal. In the event of default by the other party to the agreement,
retention of the collateral may be subject to legal proceedings.

- --------------------------------------------------------------------------------
ALLOCATION OF INCOME, EXPENSES, GAINS AND LOSSES. Income, expenses (other than
those attributable to a specific class), gains and losses are allocated on a
daily basis to each class of shares based upon the relative proportion of net
assets represented by such class. 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


                         30 | OPPENHEIMER DISCOVERY FUND



its investment company taxable income, including any net realized gain on
investments not offset by capital loss carryforwards, if any, to shareholders,
therefore, no federal income or excise tax provision is required.

      Net investment income (loss) and net realized gain (loss) may differ for
financial statement and tax purposes. The character of dividends and
distributions made during the fiscal year from net investment income or net
realized gains may differ from their ultimate characterization for federal
income tax purposes. Also, due to timing of dividends and distributions, the
fiscal year in which amounts are distributed may differ from the fiscal year in
which the income or net realized gain was recorded by the Fund.

      As of March 31, 2005, the Fund had available for federal income tax
purposes an estimated capital loss carryforward of $192,657,579. 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. As of March 31,
2005, it is estimated that the Fund will utilize $41,174,706 of capital loss
carry-forward to offset realized capital gains. During the year ended September
30, 2004, the Fund utilized $145,584,050 of capital loss carryforward to offset
capital gains realized in that fiscal year.

As of September 30, 2004, the Fund had available for federal income tax purposes
unused capital loss carryforwards as follows:

                           EXPIRING
                           --------------------------
                           2010         $125,100,589
                           2011          108,731,696
                                        ------------
                           Total        $233,832,285
                                        ============

- --------------------------------------------------------------------------------
TRUSTEES' COMPENSATION. The Fund has adopted an unfunded retirement plan for the
Fund's independent trustees. Benefits are based on years of service and fees
paid to each trustee during the years of service. During the six months ended
March 31, 2005, the Fund's projected benefit obligations were increased by
$2,916 and payments of $16,095 were made to retired trustees, resulting in an
accumulated liability of $202,210 as of March 31, 2005.

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


                         31 | OPPENHEIMER DISCOVERY 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,
are recorded on the ex-dividend date. Income and capital gain distributions, if
any, are declared and paid annually.

- --------------------------------------------------------------------------------
INVESTMENT INCOME. Dividend income is recorded on the ex-dividend date or upon
ex-dividend notification in the case of certain foreign dividends where the
ex-dividend date may have passed. Non-cash dividends included in dividend
income, if any, are recorded at the fair market value of the securities
received. Interest income, which includes accretion of discount and amortization
of premium, is accrued as earned.

- --------------------------------------------------------------------------------
CUSTODIAN FEES. Custodian Fees and Expenses in the Statement of Operations may
include interest expense incurred by the Fund on any cash overdrafts of its
custodian account during the period. Such cash overdrafts may result from the
effects of failed trades in portfolio securities and from cash outflows
resulting from unanticipated shareholder redemption activity. The Fund pays
interest to its custodian on such cash overdrafts 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.

- --------------------------------------------------------------------------------
OTHER. The preparation of financial statements in conformity with U.S. generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of income and expenses during the reporting
period. Actual results could differ from those estimates.

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

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



                                 SIX MONTHS ENDED MARCH 31, 2005         YEAR ENDED SEPTEMBER 30, 2004
                                    SHARES                AMOUNT            SHARES              AMOUNT
- -------------------------------------------------------------------------------------------------------
                                                                            
CLASS A
Sold                               981,328         $  40,545,419         3,492,410      $  146,291,015
Redeemed                        (2,533,963)         (105,135,602) 1     (5,532,857)       (228,439,252)
                               ------------------------------------------------------------------------
Net decrease                    (1,552,635)        $ (64,590,183)       (2,040,447)     $  (82,148,237)
                               ========================================================================



                         32 | OPPENHEIMER DISCOVERY FUND





                       SIX MONTHS ENDED MARCH 31, 2005        YEAR ENDED SEPTEMBER 30, 2004
                              SHARES            AMOUNT             SHARES            AMOUNT
- ---------------------------------------------------------------------------------------------
                                                                   
CLASS B
Sold                         223,173      $  8,279,577            710,554      $ 26,834,728
Redeemed                    (733,650)      (27,321,589) 1      (1,680,893)      (63,149,520)
                          -------------------------------------------------------------------
Net decrease                (510,477)     $(19,042,012)          (970,339)     $(36,314,792)
                          ===================================================================

- ---------------------------------------------------------------------------------------------
CLASS C
Sold                         107,027      $  4,066,698            305,902      $ 11,770,243
Redeemed                    (213,494)       (8,075,188) 1        (406,203)      (15,487,656)
                          -------------------------------------------------------------------
Net decrease                (106,467)     $ (4,008,490)          (100,301)     $ (3,717,413)
                          ===================================================================

- ---------------------------------------------------------------------------------------------
CLASS N
Sold                          67,096      $  2,754,184            189,761      $  7,714,906
Redeemed                     (72,243)       (2,964,357) 1         (50,634)       (2,094,032)
                          -------------------------------------------------------------------
Net increase (decrease)       (5,147)     $   (210,173)           139,127      $  5,620,874
                          ===================================================================

- ---------------------------------------------------------------------------------------------
CLASS Y
Sold                         127,663      $  5,454,779            765,415      $ 33,587,932
Redeemed                    (364,824)      (15,552,096) 1        (872,384)      (37,228,982)
                          -------------------------------------------------------------------
Net decrease                (237,161)     $(10,097,317)          (106,969)     $ (3,641,050)
                          ===================================================================


1. Net of redemption fees of $2,544, $443, $163, $36 and $179 for Class A, Class
B, Class C, Class N and Class Y, respectively.

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

The aggregate cost of purchases and proceeds from sales of securities, other
than short-term obligations, for the six months ended March 31, 2005, were
$786,430,122 and $855,952,955, respectively.

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

MANAGEMENT FEES. Management fees paid to the Manager were in accordance with the
investment advisory agreement with the Fund which provides for a fee at an
annual rate of 0.75% of the first $200 million of average annual net assets,
0.72% of the next $200 million, 0.69% of the next $200 million, 0.66% of the
next $200 million, 0.60% of the next $700 million, and 0.58% of average annual
net assets in excess of $1.5 billion.

- --------------------------------------------------------------------------------
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 March 31, 2005, the Fund paid
$1,558,009 to OFS for services to the Fund.

      Additionally, Class Y shares are subject to minimum fees of $10,000 per
annum for assets of $10 million or more. The Class Y shares are subject to the
minimum fees in the event that the per account fee does not equal or exceed the
applicable minimum fees. OFS may voluntarily waive the minimum fees.


                         33 | OPPENHEIMER DISCOVERY FUND



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

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

DISTRIBUTION AND SERVICE PLAN (12B-1) FEES. Under its General Distributor's
Agreement with the Fund, OppenheimerFunds Distributor, Inc. (the Distributor)
acts as the Fund's principal underwriter in the continuous public offering of
the Fund's classes of shares.

- --------------------------------------------------------------------------------
SERVICE PLAN FOR CLASS A SHARES. The Fund has adopted a Service Plan for Class A
shares. It reimburses the Distributor for a portion of its costs incurred for
services provided to accounts that hold Class A shares. Reimbursement is made
quarterly 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 quarterly for
providing personal services and maintenance of accounts of their customers that
hold Class A shares. Any unreimbursed expenses the Distributor incurs with
respect to Class A shares in any fiscal year cannot be recovered in subsequent
years. Fees incurred by the Fund under the Plan are detailed in the Statement of
Operations.

- --------------------------------------------------------------------------------
DISTRIBUTION AND SERVICE PLANS FOR CLASS B, CLASS C AND CLASS N SHARES. The Fund
has adopted Distribution and Service Plans for Class B, Class C and Class N
shares to compensate the Distributor for its services in connection with the
distribution of those shares and servicing accounts. Under the plans, the Fund
pays the Distributor an annual asset-based sales charge of 0.75% per year on
Class B and Class C shares and 0.25% per year on Class N shares. The Distributor
also receives a service fee of 0.25% per year under each plan. If either the
Class B, Class C or Class N plan is terminated by the Fund or by the
shareholders of a class, the Board of Trustees and its independent trustees must
determine whether the Distributor shall be entitled to payment from the Fund of
all or a portion of the service fee and/or asset-based sales charge in respect
to shares sold prior to the effective date of such termination. The
Distributor's aggregate uncompensated expenses under the plan at March 31, 2005
for Class B, Class C and Class N shares were $4,443,856, $1,218,076 and
$123,177, respectively. Fees incurred by the Fund under the plans are detailed
in the Statement of Operations.

- --------------------------------------------------------------------------------
SALES CHARGES. Front-end sales charges and contingent deferred sales charges
(CDSC) do not represent expenses of the Fund. They are deducted from the
proceeds of sales of Fund shares prior to investment or from redemption proceeds
prior to remittance, as applicable. The sales charges retained by the
Distributor from the sale of shares and the CDSC retained by the Distributor on
the redemption of shares is shown in the table below for the period indicated.



                                          CLASS A         CLASS B          CLASS C         CLASS N
                          CLASS A      CONTINGENT      CONTINGENT       CONTINGENT      CONTINGENT
                        FRONT-END        DEFERRED        DEFERRED         DEFERRED        DEFERRED
                    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
- --------------------------------------------------------------------------------------------------
                                                                            
March 31, 2005           $108,553          $5,404        $161,303           $5,619         $10,014



                         34 | OPPENHEIMER DISCOVERY FUND



- --------------------------------------------------------------------------------
WAIVERS AND REIMBURSEMENTS OF EXPENSES. Effective January 1, 2005, the Manager
has voluntarily agreed to reduce its advisory fee rate for any quarter during
the calendar year ending December 31, 2005, by 0.05% of the Fund's average daily
net assets if the Fund's trailing one-year total return performance, measured at
the end of the prior calendar quarter, was in the fourth or fifth quintile of
the Fund's Lipper peer group. However, if the Fund's total return performance at
the end of a subsequent calendar quarter has improved to the third or higher
quintile of the Fund's Lipper peer group, the advisory fee reduction will be
terminated for the remainder of the calendar year. During the six months ended
March 31, 2005, the Manager waived $113,404 of its fees. The advisory fee
reduction is a voluntary undertaking and may be terminated by the Manager at any
time.

      OFS has voluntarily agreed to limit transfer and shareholder servicing
agent fees for all classes to 0.35% of average annual net assets per class.
During the six months ended March 31, 2005, OFS waived $15,410, $15,698, and
$3,965 for Class B, Class C and Class N shares, respectively. This undertaking
may be amended or withdrawn at any time.

- --------------------------------------------------------------------------------
5. ILLIQUID OR RESTRICTED SECURITIES

As of March 31, 2005, investments in securities included issues that are
illiquid or restricted. Restricted securities are purchased in private placement
transactions, are not registered under the Securities Act of 1933, may have
contractual restrictions on resale, and are valued under methods approved by the
Board of Trustees as reflecting fair value. A security may also be considered
illiquid if it lacks a readily available market or if its valuation has not
changed for a certain period of time. The Fund will not invest more than 10% of
its net assets (determined at the time of purchase and reviewed periodically) in
illiquid or restricted securities. Certain restricted securities, eligible for
resale to qualified institutional investors, are not subject to that limitation.
Information concerning restricted securities is as follows:



                                                                                             UNREALIZED
                                     ACQUISITION                    VALUATION AS OF        APPRECIATION
SECURITY                                   DATES             COST    MARCH 31, 2005      (DEPRECIATION)
- -----------------------------------------------------------------------------------------------------------
                                                                              
Candescent Technologies Corp.,
$2.50 Cv., Series D, Vtg.                3/31/95       $3,000,000          $     --       $ (3,000,000)
Candescent Technologies Corp.,
Sr. Exchangeable, Series E, Vtg.         4/24/96        4,400,000                --         (4,400,000)
Candescent Technologies Corp.,
Sr. Exchangeable, Series F, Vtg.         6/11/97        1,500,000                --         (1,500,000)
Discovery Laboratories, Inc.
Wts.,
Exp. 9/20/10                             6/24/03               --           438,433            438,433
VaxGen, Inc.                            11/19/04          999,978           792,246           (207,732)



                         35 | OPPENHEIMER DISCOVERY FUND



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

- --------------------------------------------------------------------------------
6. LITIGATION

A consolidated amended complaint has been filed as putative derivative and class
actions against the Manager, OFS and the Distributor (collectively, the
"Oppenheimer defendants"), as well as 51 of the Oppenheimer funds (as "Nominal
Defendants") including the Fund, 30 present and former Directors or Trustees and
8 present and former officers of the funds. This complaint, initially filed in
the U.S. District Court for the Southern District of New York on January 10,
2005 and amended on March 4, 2005, consolidates into a single action and amends
six individual previously-filed putative derivative and class action complaints.
Like those prior complaints, the complaint alleges that the Manager charged
excessive fees for distribution and other costs, improperly used assets of the
funds in the form of directed brokerage commissions and 12b-1 fees to pay
brokers to promote sales of the funds, and failed to properly disclose the use
of assets of the funds to make those payments in violation of the Investment
Company Act of 1940 and the Investment Advisers Act of 1940. Also, like those
prior complaints, the complaint further alleges that by permitting and/or
participating in those actions, the Directors/Trustees and the Officers breached
their fiduciary duties to shareholders of the funds under the Investment Company
Act of 1940 and at common law. The complaint seeks unspecified compensatory and
punitive damages, rescission of the funds' investment advisory agreements, an
accounting of all fees paid, and an award of attorneys' fees and litigation
expenses.

      The Oppenheimer defendants believe that the allegations contained in the
Complaints are without merit and that they, the funds named as Nominal
Defendants, and the Directors/Trustees of those funds have meritorious defenses
against the claims asserted. The Oppenheimer defendants intend to defend these
lawsuits vigorously and to contest any claimed liability. The Oppenheimer
defendants believe that it is premature to render any opinion as to the
likelihood of an outcome unfavorable to them and that no estimate can yet be
made with any degree of certainty as to the amount or range of any potential
loss.


                         36 | OPPENHEIMER DISCOVERY FUND



PORTFOLIO PROXY VOTING POLICIES AND PROCEDURES;
UPDATES TO STATEMENTS OF INVESTMENTS  Unaudited
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
The Fund has adopted Portfolio Proxy Voting Policies and Procedures under which
the Fund votes proxies relating to securities ("portfolio proxies") held by the
Fund. A description of the Fund's Portfolio Proxy Voting Policies and Procedures
is available (i) without charge, upon request, by calling the Fund toll-free at
1.800.525.7048, (ii) on the Fund's website at www.oppenheimerfunds.com, and
(iii) on the SEC's website at www.sec.gov. In addition, the Fund is required to
file Form N-PX, with its complete proxy voting record for the 12 months ended
June 30th, no later than August 31st of each year. The Fund's voting record is
available (i) without charge, upon request, by calling the Fund toll-free at
1.800.525.7048, and (ii) in 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.


                         37 | OPPENHEIMER DISCOVERY FUND



BOARD APPROVAL OF THE FUND'S INVESTMENT
ADVISORY AGREEMENT  Unaudited
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
Each year, the Board of Trustees (the "Board"), including a majority of the
independent Trustees, is required to determine whether to renew the advisory
agreement. The Investment Company Act of 1940, as amended, requires that the
Board request and evaluate, and that the Manager provide, such information as
may be reasonably necessary to evaluate the terms of the advisory agreement. The
Board employs an independent consultant to prepare a report that provides
information, including comparative information, that the Board requests for this
purpose. In addition, the Board receives information throughout the year
regarding Fund services, fees, expenses and performance.

      NATURE AND EXTENT OF SERVICES. In considering the renewal of the Fund's
advisory agreement for the current year, the Board evaluated the nature and
extent of the services provided by the Manager and its affiliates. The Manager
provides the Fund with office space, facilities and equipment; administrative,
accounting, clerical, legal and compliance personnel; securities trading
services; oversight of third party service providers and the services of the
portfolio manager and the Manager's investment team, who provide research,
analysis and other advisory services in regard to the Fund's investments.

      QUALITY OF SERVICES. The Board also considered the quality of the services
provided and the quality of the Manager's resources that are available to the
Fund. The Board noted that the Manager has had over forty years of experience as
an investment adviser and that its assets under management rank it among the top
mutual fund managers in the United States. The Board evaluated the Manager's
administrative, accounting, legal and compliance services and information the
Board received regarding the experience and professional qualifications of the
Manager's personnel and the size and functions of its staff. The Board members
also considered their experiences as directors or trustees of the Fund and other
funds advised by the Manager. The Board received and reviewed information
regarding the quality of services provided by affiliates of the Manager, which
it also reviews at other times during the year in connection with the renewal of
the Fund's service agreements. The Board noted that the relatively low
redemption rate for funds advised by the Manager provided an indication of
shareholder satisfaction with the overall level of services provided by the
Manager.

      PORTFOLIO MANAGEMENT SERVICES AND PERFORMANCE. In its evaluation of the
quality of the portfolio management services provided, the Board considered the
experience of Laura Granger and the Manager's growth investment team and
analysts. Ms. Granger is the Fund's portfolio manager and has been the person
primarily responsible for the day-to-day management of the Fund's portfolio
since February 2003. Ms. Granger has had over 21 years of experience managing
equity investments. Ms. Granger has been a Vice President of the Manager since
October 2000 and is a portfolio manager and officer


                         38 | OPPENHEIMER DISCOVERY FUND



of other portfolios in the OppenheimerFunds complex. She was a portfolio manager
at Fortis Advisors from July 1998 through October 2000.

      The Board reviewed information, prepared by the Manager and by the
independent consultant, comparing the Fund's historical performance to relevant
market indices and to the performance of other small-cap growth funds (including
both funds advised by the Manager and funds advised by other investment
advisers). The Board also receives and reviews comparative performance
information regarding the Fund and other funds at each Board meeting. The Board
noted that the Fund's five-year performance was slightly better than its peer
group average. However its three- and ten-year performance was below its peer
group average and its one-year performance was disappointing.

      MANAGEMENT FEES AND EXPENSES. The Board also reviewed information,
including comparative information, regarding the fees paid to the Manager and
its affiliates and the other expenses borne by the Fund. The independent
consultant provided comparative data in regard to the fees and expenses of the
Fund, other small-cap growth funds and other funds with comparable asset levels
and distribution features. The Board noted that the Fund's contractual and
actual management fees as well as its total expenses are lower than its peer
group average. In addition, the Board evaluated the comparability of the fees
charged and services provided to the Fund to the fees charged and services
provided to other types of entities advised by the Manager. Based on this
evaluation of the Fund's fees and expenses, the Board requested and the Manager
agreed to voluntarily reduce the advisory fee rate for any quarter during the
calendar year ending December 31, 2005, by 0.05% of the Fund's average daily net
assets if the Fund's trailing one-year total return performance, measured at the
end of the prior calendar quarter, was in the fourth or fifth quintile of the
Fund's Lipper peer group. However, if the Fund's total return performance at the
end of a subsequent calendar quarter has improved to the third or higher
quintile of Fund's Lipper peer group, the advisory fee reduction will be
terminated for the remainder of the calendar year. The advisory fee reduction is
a voluntary undertaking and may be terminated by the Manager at any time.

      PROFITABILITY OF THE MANAGER AND AFFILIATES. The Board also reviewed
information regarding the cost of services provided by the Manager and its
affiliates and the Manager's profitability. The Board considered that the
Manager must be able to pay and retain experienced professional personnel at
competitive rates to provide services to the Fund and that maintaining the
financial viability of the Manager is important in order for the Manager to
continue to provide significant services to the Fund and its shareholders. In
addition the Board considered information that was provided regarding the direct
and indirect benefits the Manager receives as a result of its relationship with
the Fund,


                         39 | OPPENHEIMER DISCOVERY FUND



BOARD APPROVAL OF THE FUND'S INVESTMENT
ADVISORY AGREEMENT  Unaudited / Continued
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
including compensation paid to the Manager's affiliates and research provided to
the Manager in connection with permissible brokerage arrangements (soft dollar
arrangements).

      ECONOMIES OF SCALE. The Board reviewed the extent to which the Manager may
realize economies of scale in managing and supporting the Fund and the current
level of Fund assets in relation to the Fund's breakpoint schedule for its
management fees. The Board noted that the Fund has recently experienced moderate
asset growth but, based on current asset levels, the Fund is not yet approaching
its last management fee breakpoint. Based on this evaluation, the Board
concluded that no changes to the Fund's breakpoint schedule are appropriate at
this time.

      CONCLUSIONS. These factors were also considered by the independent
Trustees meeting separately from the full Board, assisted by experienced counsel
to the Fund. Fund counsel is independent of the Manager within the meaning and
intent of the Securities and Exchange Commission Rules. The Board was aware that
there are alternatives to retaining the Manager.

      Based on its review of the information it received and its evaluations
described above, the Board, including a majority of the independent Trustees,
concluded that the nature, extent and quality of the services provided to the
Fund by the Manager are a benefit to the Fund and in the best interest of the
Fund's shareholders and that the amount and structure of the compensation
received by the Manager and its affiliates, and the revised fee structure
adopted by the Board and the Manager are reasonable in relation to the services
provided. Accordingly, the Board elected to continue the investment advisory
agreement for another year. In arriving at this decision, the Board did not
single out any factor or factors as being more important than others, but
considered all of the factors together. The Board judged the terms and
conditions of the advisory agreement, including the management fee, in light of
all of the surrounding circumstances.


                         40 | OPPENHEIMER DISCOVERY FUND




ITEM 2. CODE OF ETHICS

      Not applicable to semiannual reports.

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT

      Not applicable to semiannual reports.

ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES

      Not applicable to semiannual reports.

ITEM 5. NOT APPLICABLE

ITEM 6. SCHEDULE OF INVESTMENTS

      Not applicable.

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

      Not applicable.

ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT COMPANIES

      Not applicable.

ITEM 9. PURCHASE OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT
COMPANY AND AFFILIATED PURCHASERS

      Not applicable.

ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

      At a meeting of the Board of Trustees of the registrant held on February
18, 2004, the Board adopted (1) a policy that, should the Board determine that a
vacancy exists or is likely to exist on the Board, the Governance Committee of
the Board, which is comprised entirely of independent trustees, shall consider
any candidates for Board membership recommended by the registrant's security
holders and (2) a policy that security holders wishing to submit a nominee for
election to the Board may do so by mailing their submission to the offices of
OppenheimerFunds, Inc., Two World Financial Center, 225 Liberty Street - 11th
Floor, New York, NY 10281-1008, to the attention of the Chair of the Governance
Committee. Prior to February 18, 2004, the Board did not have a formalized
policy with respect to consideration of security holder nominees or a procedure
by which security holders may make their submissions. In addition to security
holder nominees, the Governance Committee may also consider nominees recommended
by independent Board members or recommended by any other Board members and is
authorized under its Charter, upon Board approval, to retain an executive search
firm to assist in screening potential candidates. Upon Board approval, the
Governance Committee may



also obtain legal, financial, or other external counsel that may be necessary or
desirable in the screening process.

ITEM 11. CONTROLS AND PROCEDURES

      (a)   Based on their evaluation of 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 March 31, 2005, registrant's
            principal executive officer and principal financial officer found
            registrant's disclosure controls and procedures to provide
            reasonable assurances that information required to be disclosed by
            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.

      (b)   There have been no changes in registrant's internal controls over
            financial reporting that occurred during the registrant's last
            fiscal quarter that has materially affected, or is reasonably likely
            to materially affect, the registrant's internal control over
            financial reporting.



ITEM 12. EXHIBITS.

      (A)   EXHIBIT ATTACHED HERETO. (ATTACH CODE OF ETHICS AS EXHIBIT)(NOT
            APPLICABLE TO SEMIANNUAL REPORTS)

      (B)   EXHIBITS ATTACHED HERETO. (ATTACH CERTIFICATIONS AS EXHIBITS)

                                   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 Discovery Fund


By:   /s/ John V. Murphy
      ----------------------------
      John V. Murphy
      Principal Executive Officer

Date: May 13, 2005

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: May 13, 2005


By:   /s/ Brian W. Wixted
      ----------------------------
      Brian W. Wixted
      Chief Financial Officer

Date: May 13, 2005