OPPENHEIMER ENTERPRISE FUND
N-30D, 1999-05-04
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                       Semiannual Report February 28, 1999





                                   OPPENHEIMER
                                 Enterprise Fund



                                    [PICTURE]



                                Oppenheimer Funds
                             THE RIGHT WAY TO INVEST


<PAGE>

Contents
3     President's  Letter
4     An  Interview  with  Your  Fund's  Manager
11    Financial  Statements
29    Officers  and  Trustees
32    Information  and  Services


Report  highlights
- ------------------
- -     Technology  was  a  key  ingredient  to the Fund's success, although by no
means  the only factor. The Fund invested in Internet stocks, but was careful to
select  the  ones  believed  to  have  true  staying  power.
- -     The  Fund was also successful because it largely avoided poorly performing
industries  such as energy, which was adversely impacted by plunging oil prices.

<TABLE>
<CAPTION>
Cumulative  Total  Returns
For  the  6-Month  Period
Ended  2/28/99

Class A
Without            With
Sales Chg.(1)  Sales Chg.(2)
- -------------  -------------
<S>            <C>

46.87%                38.43%
- -------------  -------------
Class B
Without        With
Sales Chg.(1)  Sales Chg.(2)
- -------------  -------------
46.44%                41.44%
- -------------  -------------
Class C
Without        With
Sales Chg.(1)  Sales Chg.(2)
- -------------  -------------
46.52%                45.52%
- -------------  -------------
</TABLE>

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.  In  reviewing performance and
rankings,  please  remember  that  past  performance  does  not guarantee future
results. Investment return and principal value of an investment in the Fund will
fluctuate so that an investor's shares, when redeemed, may be worth more or less
than  the  original  cost.  Because the stock market can be volatile, the Fund's
performance may be subject to substantial short-term changes. For updates on the
Fund's  performance,  please  contact  your  financial  advisor,  call  us  at
1-800-525-7048  or  visit  our  website,  www.oppenheimerfunds.com.
1.  Includes  changes  in  net asset value per share without deducting any sales
charges.
2.  Class  A return includes the current maximum initial sales charge of  5.75%.
Class  B  return includes the applicable contingent deferred sales charge of 5%.
Class C return includes the contingent deferred sales charge  of 1%. Class B and
C shares are subject to an annual 0.75% asset-based sales charge. An explanation
of  the  different  performance  calculations  is  in  the  Fund's  prospectus.


                         2  Oppenheimer Enterprise Fund
<PAGE>

[PICTURE  OF  BRIDGET  A.  MACASKILL,  PRESIDENT,  OPPENHEIMER  ENTERPRISE FUND]

Bridget  A.  Macaskill
President
Oppenheimer  Enterprise  Fund

Dear  shareholder,

Contrary  to  what  many analysts had expected, the U.S. economy appears to have
picked up steam over the past few months.  The fourth quarter of 1998 posted the
fastest rate of economic growth in two years, and early indications suggest that
the  first  quarter  of  1999  may  follow  suit.
     With  respect  to  the  U.S.  bond  market, stronger-than-expected economic
growth  has  triggered  concerns that the Federal Reserve may raise key interest
rates  to  forestall  an  acceleration  of  inflation.  As  a  result, yields of
longer-term  taxable  bonds  have  risen  from  their  October  1998  lows, when
investors  had  bid up prices during the global "flight to quality." At the same
time,  tax  exempt  bond  prices  and  yields  have  remained relatively stable.
     In  the  U.S. stock market, it might appear at first glance that prices are
rising  as  rapidly  as  the  economy is growing. However, a closer look reveals
that,  with  the  exception  of  large-cap  growth  companies and the technology
industry, most stock prices remained relatively flat. What's more, the disparity
in  valuations between large companies, which have led the market's advance, and
smaller  ones,  which  have  lagged,  has  become  historically  wide.
     What do these observations mean for your investments? In our view, actively
managed  portfolios  that  are  closely  monitored  by expert money managers are
likely  to  provide  better returns than passive index investing in 1999. That's
because  selectivity  is expected to be more critical to performance than it has
been  over  the  past  few  years.  In a potentially overvalued stock market and
rising  interest-rate  environment,  the  ability to identify the most promising
securities  could  become  paramount.
     Even  though  many  equity  investors  may  be  tempted  to jump aboard the
technology  bandwagon,  we  suggest a more prudent course: broad diversification
beyond  any  single  asset  class,  industry, capitalization range or geographic
region.  We  believe  that  the  risks  of  this  investment environment require
consideration of a broad range of investments and markets, including bonds. That
way,  if  one  market  experiences  setbacks, one or more of the others may help
cushion  the effects on your overall portfolio.
     No matter what the financial  markets have in store, we resolve to continue
working with your financial  advisor to keep you apprised of potential risks and
opportunities. Providing you with the market information, professionally managed
investments  and other  resources you need to achieve your financial goals is an
important  part of our  enduring  commitment  to you as The Right Way to Invest.
Sincerely,

/S/  Bridget  A.  Macaskill
- ---------------------------
Bridget  A.  Macaskill
March  19,  1999

                         3  Oppenheimer Enterprise Fund
<PAGE>

An  interview  with  your  Fund's  manager
- ------------------------------------------

How  did  the  Fund  perform?
Oppenheimer  Enterprise  Fund  continued  to perform  very well  relative to the
universe  of mutual  funds that invest  primarily  in small  companies.  For the
six-month  period  ended  February  28,  1999,  the  Fund's  Class A shares  has
outperformed its benchmark,  the Russell 2000 Index.(1) In addition,  the Fund's
Class A shares  were  ranked 4 out of 48  micro-cap  funds as measured by Lipper
Analytical Services for the one-year period ended March 31, 1999.(2)

What  factors  affected  the  Fund's  performance?
Our  emphasis  on  the technology sector, particularly computer software and the
Internet,  was  very  important  to performance. One example is the stock of TSI
International  Software  Ltd., which creates "application integration" software.
Corporations  continuously  exchange  information  with  internal  and  external
partners,  some  of  whom  use  different  types  of computer operating systems.
However,  communicating  between  computers that use different operating systems
can  be  a  problem.  Because  it's  easier  for  corporations to buy a packaged
software  solution  from  a  company  such  as TSI rather than develop a complex
program  in-house,  TSI's  revenues  and  profits  have  grown  at a rapid rate.

"small  company  stocks  are  very  attractively  valued."


                         4  Oppenheimer Enterprise Fund
<PAGE>

[PICTURE  PORTFOLIO  TEAM]
Portfolio  Management  Team  (l  to  r)
Bonnie  Sherman
Alan  Gilston
Jay  Tracey  (Portfolio  Manager)
Susan  Switzer

What  about  some  winning  companies  outside  technology?
School  Specialty, Inc., a distributor of non-textbook educational supplies such
as art supplies, games, bulletin boards and furniture, holds a dominant position
in  an  industry  with  many  small  competitors. Traditionally, the company has
marketed  its  products  directly  to  schools,  but  it is increasingly selling
directly  to  parents and is launching an Internet website specifically for that
purpose.
     Indeed,  Internet  stocks  have contributed to the performance of the Fund.
For  instance, Cyberian Outpost, Inc. is a leading Internet merchant of computer
products  through  their  website,  Outpost.com. We bought shares in the company
before  it  went  public  in  late  July.  Although it's too early to expect the
company  to  post  a  profit,  it is showing very favorable momentum in terms of
revenues  and  "page  views,"  the  number  of  times  people  visit their site.

1.  The  return on the Russell 2000 Index, which cannot be purchased directly by
investors,  for  the  six-month  period  ended  February  28,  1999, was 16.79%.
2.  Source:  Lipper Analytical Services, Inc., 3/31/99. Based on the comparisons
between  changes  in  net  asset  value  without considering sales charges, with
dividends  and  capital  gains  distributions  of  the  Fund's  Class  A  shares
reinvested.  The  Fund's  Class A shares were ranked 4 out of 48 and 1 out of 24
micro-cap funds for the one- and three-year period, respectively, ended 3/31/99.


                         5  Oppenheimer Enterprise Fund
<PAGE>

Avg  Annual  Total  Returns
For  the  Periods  Ended  3/31/993(3)


Class A
          Since
1 year    Inception
- --------------------
16.22%        32.88%
- --------------------

Class B
          Since
1 year    Inception
- --------------------
17.46%        33.80%
- --------------------

Class C
          Since
1 year    Inception
- --------------------
21.57%        34.25%
- --------------------


An interview with your Fund's manager

Since most Internet companies don't yet make a profit, how do you evaluate them?
We try to assess the company's opportunities down the line by asking a series of
questions:  What  share  of  the  market  is the company likely to have in a few
years?  And  therefore,  what  can  we expect revenues and profits to be at that
point? Also, based on growth rates and future earnings per share, what would the
stock  price  likely  be  at  that  point  in  time?
     One  reason  that  Internet  stocks  have done so well over the last six to
twelve months is that aggregate advertising dollars spent on the Internet turned
out  to  be  much  higher  in 1998 than initially forecast, as has the number of
households that are active on the Internet. These upside surprises over the past
year,  relative  to  prior  estimates, have helped to fuel the higher valuations
that  you  see  in  this  group.
     To  be  involved  in Internet stocks today is a very aggressive posture, no
matter  what  you  think  of  the company's prospects. We recognize that there's
speculation  about  Internet stocks and therefore we've been careful to focus on
the  ones  we  think  can  be  long-term  winners.

3.  Class  A  returns include the current maximum initial sales charge of 5.75%.
Class  B  returns  include the applicable contingent deferred sales charge of 5%
(1-year)  and  3%  (since  inception  on  11/7/95).  Class C returns include the
contingent  deferred  sales  charge of 1% for the one-year period. Class B and C
shares  are  subject  to a 0.75% asset-based sales charge. An explanation of the
different  performance  calculations  is  in  the  Fund's  prospectus.


                         6  Oppenheimer Enterprise Fund
<PAGE>

What  other  areas  have  done  well?
The  healthcare  industry  has  been  a  very  good  performer  for the Fund. In
particular,  we've  had  success  by indirectly investing in the pharmaceuticals
industry  through  companies  that  provide  outsourced  services to the sector.
Applied  Analytical Industries, Inc., a "contract research organization," is one
such  company.  It  performs  clinical  trials and drug development research for
pharmaceuticals  companies.  Another  very  successful  holding was Professional
Detailing,  Inc.,  which  provides  outside  sales  and  marketing  for  the
pharmaceuticals  industry.  Professional  Detailing provides an alternative when
drug  manufacturers  want  to  launch  or  re-invigorate  sales  of a particular
product. Rather than going to the expense of hiring new salespeople, the company
simply  hires  Professional  Detailing  as  its  temporary  sales  force.

Have  any  areas  proved  to  be  disappointing?
One  of  the  biggest  disappointments  was  in  the  competitive local exchange
carriers  (CLECs),  as  distinguished from the regional bell operating companies
(RBOCs). Although the CLECs have been winning business on the basis of price and
service  against  the  RBOCs,  the  CLECs  have  not  been generating sufficient
earnings.  Instead,  they've  been reinvesting money back into their businesses,
and  significant  profits  have  been  delayed.


                         7  Oppenheimer Enterprise Fund
<PAGE>

An  interview  with  your  Fund's  manager

Another  poorly  performing  sector was energy. The global economic slowdown has
diminished the demand for oil, causing prices to fall. Although energy companies
have become much more efficient in recent years due to technological advances in
oil  exploration,  the  industry  has  had  difficulty generating profits at the
current  oil  prices.

What  is  your  outlook  for  small-cap  stocks  over  the  coming  months?
Small-cap stocks, as measured by the Russell 2000 Index, have now underperformed
the  Standard  &  Poor's  500  Index for five years in a row. As a result, small
company  stocks  are  very  attractively  valued.  However,  whether or not that
translates  into  better  performance  for  the  small-cap  market  in  1999  is
impossible  to say. 

A major  concern for  investors  has been  "liquidity."  The fact is,  small-cap
stocks are more difficult to buy and sell than large-cap stocks.  Many investors
see no need to take liquidity risk when large company profits remain  relatively
strong. In addition, during a global economic slowdown,  blue-chip companies are
perceived  to be better  able to  weather  the storm.  Since the Asian  economic
crisis became evident in 1997,  investors have displayed a marked preference for
large company stocks that trade very actively.


                         8  Oppenheimer Enterprise Fund
<PAGE>

Portfolio  Allocation  (4)

[PIE  CHART]

- -  Stocks                80.0%
- -  Cash  Equivalents     20.0

We  expect this liquidity concern to ease as global conditions improve and small
company  stocks  should  begin  to  consistently  demonstrate  superior earnings
growth.  That's  why  we  are  pleased  that  the average company in Oppenheimer
Enterprise  Fund  has been able to generate earnings growth in excess of 30% per
year. Maintaining a portfolio of companies that can sustain high earnings growth
is  part  of  what  makes  Oppenheimer  Enterprise Fund The Right Way to Invest.

<TABLE>
<CAPTION>
Top 5 Industries (4)
- -----------------------------------------------------
<S>                                             <C>
Computer Software/Services                      22.3%
- -----------------------------------------------------
Industrial Services                             11.4 
- -----------------------------------------------------
Retail: Specialty                                6.1 
- -----------------------------------------------------
Healthcare/Supplies & Services                   5.0 
- -----------------------------------------------------
Computer Hardware                                5.0
- -----------------------------------------------------

Top 10 Stock Holdings (4)
- -----------------------------------------------------
MicroFinancial, Inc.                             1.8% 
- -----------------------------------------------------
Micromuse, Inc.                                  1.8 
- -----------------------------------------------------
Handleman Co.                                    1.7 
- -----------------------------------------------------
Cyberian Outpost, Inc.                           1.7 
- -----------------------------------------------------
School Specialty, Inc.                           1.7 
- -----------------------------------------------------
Labor Ready, Inc.                                1.6 
- -----------------------------------------------------
Applied Analytical Industries, Inc.              1.6 
- -----------------------------------------------------
Echelon Corp.                                    1.5 
- -----------------------------------------------------
TSI International Software Ltd.                  1.5 
- -----------------------------------------------------
Priority Healthcare Corp., Cl. B                 1.5 
- -----------------------------------------------------
<FN>
4.  Portfolio is subject to change. Percentages are as of February 28, 1999, and
are  based  on  total  market  value  of  investments.
</FN>
</TABLE>


                         9  Oppenheimer Enterprise Fund
<PAGE>








                                   Financials
                                   ----------








                         10  Oppenheimer Enterprise Fund
<PAGE>

<TABLE>
<CAPTION>


Statement  of  Investments  February  28,  1999  (Unaudited)


                                                    Market Value
                                           Shares    See Note 1
- -----------------------------------------------------------------
<S>                                        <C>      <C>
Common Stocks-81.6%
- -----------------------------------------------------------------
Capital Goods-14.3%
- -----------------------------------------------------------------
Aerospace/Defense-1.1%
Armor Holdings, Inc.(1)                    200,000  $   2,925,000
- -----------------------------------------------------------------
Industrial Services-11.7%
Corporate Executive Board Co.(1)           150,000      3,675,000
- -----------------------------------------------------------------
Kendle International, Inc.(1)               80,000      1,930,000
- -----------------------------------------------------------------
Labor Ready, Inc.(1)                       150,000      4,228,125
- -----------------------------------------------------------------
META Group, Inc.(1)                         80,000      1,790,000
- -----------------------------------------------------------------
Professional Detailing, Inc.(1)            120,000      3,735,000
- -----------------------------------------------------------------
Quanta Services, Inc.(1)                   110,000      2,970,000
- -----------------------------------------------------------------
Rainbow Rentals, Inc.(1)                   180,000      1,912,500
- -----------------------------------------------------------------
Recycling Industries, Inc.(1)              500,000        109,375
- -----------------------------------------------------------------
Stericycle, Inc.(1)                         90,000      1,141,875
- -----------------------------------------------------------------
U.S. Liquids, Inc.(1)                      105,700      2,398,069
- -----------------------------------------------------------------
U.S.A. Floral Products, Inc.(1)            180,000      2,520,000
- -----------------------------------------------------------------
Unidigital, Inc.(1)                        100,000        450,000
- -----------------------------------------------------------------
Waste Connections, Inc.(1)                 180,000      3,600,000
                                                    -------------
                                                       30,459,944

- -----------------------------------------------------------------
Manufacturing-1.5%
AstroPower, Inc.(1)                        100,000      1,000,000
- -----------------------------------------------------------------
International Isotopes, Inc.(1)             50,000        575,000
- -----------------------------------------------------------------
Koala Corp.(1)                             120,000      2,400,000
                                                    -------------
                                                        3,975,000

- -----------------------------------------------------------------
Consumer Cyclicals-13.3%
- -----------------------------------------------------------------
Leisure & Entertainment-3.2%
Global Vacation Group, Inc.(1)             170,000      1,785,000
- -----------------------------------------------------------------
Handleman Co.(1)                           350,000      4,528,125
- -----------------------------------------------------------------
JAKKS Pacific, Inc.(1)                     120,000      2,002,500
                                                    -------------
                                                        8,315,625

- -----------------------------------------------------------------
Media-1.6%
Cumulus Media, Inc., Cl. A(1)              100,000      1,175,000
- -----------------------------------------------------------------
Tweeter Home Entertainment Group, Inc.(1)   80,000      3,030,000
                                                    -------------
                                                        4,205,000
</TABLE>


                         11  Oppenheimer Enterprise Fund
<PAGE>

Statement  of  Investments  (Unaudited)  (Continued)

<TABLE>
<CAPTION>
                                                 Market Value
                                        Shares    See Note 1
- --------------------------------------------------------------
<S>                                     <C>      <C>
Retail: General-2.2%
Cutter & Buck, Inc.(1)                   80,000  $   2,370,000
- --------------------------------------------------------------
Quicksilver, Inc.(1)                    100,000      3,393,750
                                                 -------------
                                                     5,763,750

- --------------------------------------------------------------
Retail: Specialty-6.3%
Blue Rhino Corp.(1)                     210,000      3,583,125
- --------------------------------------------------------------
Chico's Fas, Inc.(1)                    100,000      2,462,500
- --------------------------------------------------------------
Cyberian Outpost, Inc.(1)(2)            375,000      4,478,906
- --------------------------------------------------------------
School Specialty, Inc.(1)               200,000      4,412,500
- --------------------------------------------------------------
Select Comfort Corp.(1)                  60,000      1,432,500
                                                 -------------
                                                    16,369,531

- --------------------------------------------------------------
Consumer Staples-8.6%
- --------------------------------------------------------------
Beverages-0.8%
Packaged Ice, Inc.(1)                   250,000      2,125,000
- --------------------------------------------------------------
Consumer Services-4.0%
Applied Analytical Industries, Inc.(1)  160,000      4,160,000
- --------------------------------------------------------------
Cornell Corrections, Inc.(1)            100,000      1,650,000
- --------------------------------------------------------------
Correctional Services Corp.(1)          100,000      1,150,000
- --------------------------------------------------------------
Creditrust Corp.(1)                      70,000      1,750,000
- --------------------------------------------------------------
Rent-Way, Inc.(1)                        80,000      1,810,000
                                                 -------------
                                                    10,520,000

- --------------------------------------------------------------
Education-2.0%
Career Education Corp.(1)               110,000      3,093,750
- --------------------------------------------------------------
Corinthian Colleges, Inc.(1)            100,000      2,237,500
                                                 -------------
                                                     5,331,250

- --------------------------------------------------------------
Entertainment-1.2%
P.F. Chang's China Bistro, Inc.(1)       75,000      1,800,000
- --------------------------------------------------------------
Silver Diner, Inc.(1)(3)                 80,000        120,000
- --------------------------------------------------------------
Silver Diner, Inc.(1)(2)(3)             750,000      1,068,750
                                                 -------------
                                                     2,988,750

- --------------------------------------------------------------
Food-0.6%
Balance Bar Co.(1)                      150,000      1,434,375
</TABLE>


                         12  Oppenheimer Enterprise Fund
<PAGE>

<TABLE>
<CAPTION>
                                                   Market Value
                                          Shares    See Note 1
- ----------------------------------------------------------------
<S>                                       <C>      <C>
Energy-1.0%
- ----------------------------------------------------------------
Energy Services & Producers-0.1%
FX Energy, Inc.(1)                         60,000  $     251,250
- ----------------------------------------------------------------
Oil: Domestic-0.9%
EEX Corp.(1)                              400,000      2,425,000
- ----------------------------------------------------------------
Financial-7.9%
- ----------------------------------------------------------------
Banks-3.3%
First International Bancorp, Inc.         180,000      1,935,000
- ----------------------------------------------------------------
Investors Financial Services Corp.         50,000      2,900,000
- ----------------------------------------------------------------
TeleBanc Financial Corp.(1)                90,000      3,735,000
                                                   -------------
                                                       8,570,000

- ----------------------------------------------------------------
Diversified Financial-2.5%
MicroFinancial, Inc.(1)                   400,000      4,900,000
- ----------------------------------------------------------------
Rock Financial Corp.                      110,000      1,540,000
                                                   -------------
                                                       6,440,000

- ----------------------------------------------------------------
Insurance-2.1%
21st Century Holding Co.(1)               125,000        765,625
- ----------------------------------------------------------------
Advance Paradigm, Inc.(1)                 100,000      3,606,250
- ----------------------------------------------------------------
Scottish Annuity & Life Holdings Ltd.(1)  120,000      1,185,000
                                                   -------------
                                                       5,556,875

Healthcare-7.7%
- ----------------------------------------------------------------
Healthcare/Drugs-2.6%
Invitrogen Corp.(1)                        75,000      1,153,125
- ----------------------------------------------------------------
Lynx Therapeutics, Inc. (New)(1)(2)       150,000      1,650,000
- ----------------------------------------------------------------
Syncor International Corp.(1)             100,000      2,762,500
- ----------------------------------------------------------------
Ventana Medical Systems, Inc.(1)           64,000      1,112,000
                                                   -------------
                                                       6,677,625

- ----------------------------------------------------------------
Healthcare/Supplies & Services-5.1%
Albany Molecular Research, Inc.(1)         18,600        372,000
- ----------------------------------------------------------------
Autonomous Technologies Corp.(1)(2)       200,000      1,282,500
- ----------------------------------------------------------------
Colorado MEDtech, Inc.(1)                 250,000      3,281,250
- ----------------------------------------------------------------
EP MedSystems, Inc.(1)(3)                 600,000      1,725,000
- ----------------------------------------------------------------
Hanger Orthopedic Group, Inc.(1)          110,000      1,670,625
- ----------------------------------------------------------------
Ortivus AB, Cl. B(1)                       41,400        272,236
- ----------------------------------------------------------------
Polartechnics Ltd.(1)                     500,000        853,780
- ----------------------------------------------------------------
Priority Healthcare Corp., Cl. B(1)       100,000      3,893,750
                                                   -------------
                                                      13,351,141
</TABLE>


                         13  Oppenheimer Enterprise Fund
<PAGE>

Statement  of  Investments  (Unaudited)  (Continued)

<TABLE>
<CAPTION>
                                                 Market Value
                                        Shares    See Note 1
                                        -------  -------------
<S>                                     <C>      <C>
Technology-28.2%
Computer Hardware-5.1%
Apex PC Solutions, Inc.(1)              100,000  $   2,450,000
- --------------------------------------------------------------
Com21, Inc.(1)                          130,000      3,063,125
- --------------------------------------------------------------
Echelon Corp.(1)                        600,000      4,087,500
- --------------------------------------------------------------
Javelin Systems, Inc.(1)                100,000      1,225,000
- --------------------------------------------------------------
Maxwell Technologies, Inc.(1)            60,000      1,541,250
- --------------------------------------------------------------
NVIDIA Corp.(1)                          40,000        877,500
                                                 -------------
                                                    13,244,375

- --------------------------------------------------------------
Computer Software/Services-22.8%
A Consulting Team, Inc.(1)              100,000        650,000
- --------------------------------------------------------------
Activision, Inc.(1)                     130,000      1,413,750
- --------------------------------------------------------------
Allaire Corp.(1)                         29,900      1,457,625
- --------------------------------------------------------------
Aware, Inc.(1)                           80,000      2,770,000
- --------------------------------------------------------------
BindView Development Corp.(1)           150,000      3,375,000
- --------------------------------------------------------------
Brio Technology, Inc.(1)                100,000      1,850,000
- --------------------------------------------------------------
Catapult Communications Corp.(1)        150,000      1,509,375
- --------------------------------------------------------------
Concord Communications, Inc.(1)          50,000      2,831,250
- --------------------------------------------------------------
DA Consulting Group, Inc.(1)             90,000      1,035,000
- --------------------------------------------------------------
Descartes Systems Group, Inc. (The)(1)  250,000      1,714,087
- --------------------------------------------------------------
DSET Corp.(1)                           200,000      2,400,000
- --------------------------------------------------------------
Exchange Applications, Inc.(1)           50,000        825,000
- --------------------------------------------------------------
Information Advantage, Inc.(1)          300,000      3,600,000
- --------------------------------------------------------------
Intraware, Inc.(1)                       25,000        471,874
- --------------------------------------------------------------
MEDE AMERICA Corp.(1)                   100,000      1,712,500
- --------------------------------------------------------------
Micromuse, Inc.(1)                      150,000      4,837,500
- --------------------------------------------------------------
NetGravity, Inc.(1)                     100,000      2,112,500
- --------------------------------------------------------------
New Era of Networks, Inc.(1)             30,000      1,871,250
- --------------------------------------------------------------
ONYX Software Corp.(1)                   35,000        649,687
- --------------------------------------------------------------
pcOrder.com, Inc.(1)                      3,350        157,869
- --------------------------------------------------------------
Rogue Wave Software, Inc.(1)            300,000      2,475,000
- --------------------------------------------------------------
Segue Software, Inc.(1)                 130,000      1,600,625
- --------------------------------------------------------------
SERENA Software, Inc.(1)                150,000      1,968,750
- --------------------------------------------------------------
Smith-Gardner & Associates, Inc.(1)      52,700        671,925
- --------------------------------------------------------------
SOFTWORKS, Inc.(1)                      300,000      2,662,500
- --------------------------------------------------------------
</TABLE>


                         14  Oppenheimer Enterprise Fund
<PAGE>
<TABLE>
<CAPTION>
                                                                                Market Value
                                                                    Shares       See Note 1
- ---------------------------------------------------------------------------------------------
<S>                                                              <C>           <C>
Computer Software/Services (continued)
Superior Consultant Holdings Corp.(1)                                 35,000   $   1,155,000 
- ---------------------------------------------------------------------------------------------
Tier Technologies, Inc., Cl. B(1)                                    150,000       1,959,375 
- ---------------------------------------------------------------------------------------------
TSI International Software Ltd.(1)                                    80,000       4,015,000 
- ---------------------------------------------------------------------------------------------
Verity, Inc.(1)                                                       80,000       3,090,000 
- ---------------------------------------------------------------------------------------------
Vignette Corp.(1)                                                     25,900       1,405,075 
- ---------------------------------------------------------------------------------------------
WebTrends Corp.(1)                                                    50,000       1,256,250 
                                                                               --------------
                                                                                  59,503,767 

Electronics-0.4%
- ---------------------------------------------------------------------------------------------
Spectrian Corp.(1)                                                   100,000       1,168,750 
- ---------------------------------------------------------------------------------------------
Telecommunications-0.6%
- ---------------------------------------------------------------------------------------------
Telecommunications/Technology-0.6%
MGC Communications, Inc.(1)                                          250,000       1,507,813 
                                                                               --------------
Total Common Stocks (Cost $164,448,461)                                          213,109,821 

                                                                 Face
                                                                 Amount
- --------------------------------------------------------------------------------------------
Repurchase Agreements-20.4%
- --------------------------------------------------------------------------------------------
Repurchase agreement with First Chicago Capital Markets,
4.73%, dated 2/26/99, to be repurchased at $53,421,049 on
3/1/99, collateralized by U.S. Treasury Nts., 5.375%-7.875%,
6/30/99-2/15/07, with a value of $54,815,295 (Cost $53,400,000)  $53,400,000      53,400,000 
Total Investments, at Value (Cost $217,848,461)                        102.0%    266,509,821 
Liabilities in Excess of Other Assets                                   (2.0)     (5,133,997)
                                                                 ------------  --------------
Net Assets                                                             100.0%  $ 261,375,824 
                                                                 ============  ==============
<FN>

1.  Non-income  producing  security.
2. Identifies issues considered to be illiquid or restricted-See Note 5 of Notes to Financial
Statements.
3.  Affiliated  company.  Represents ownership of at least 5% of the voting securities of the
issuer,  and  is or was an affiliate, as defined in the Investment Company Act of 1940, at or
during  the  period  ended  February  28,  1999.  The  aggregate  fair value of securities of
affiliated  companies  held  by  the  Fund  as  of  February 28, 1999, amounts to $2,913,750.
Transactions  during  the  period  in  which  the  issuer  was  an  affiliate are as follows:
</FN>
</TABLE>

<TABLE>
<CAPTION>
                           Shares                              Shares
                         August 31,    Gross      Gross     February 28,
                            1998     Additions  Reductions      1999
- ------------------------------------------------------------------------
<S>                      <C>         <C>        <C>         <C>
Cyberian Outpost, Inc.*     375,000          -           -       375,000
- ------------------------------------------------------------------------
EP MedSystems, Inc.         538,500     61,500           -       600,000
- ------------------------------------------------------------------------
Silver Diner, Inc.          830,000          -           -       830,000
<FN>
*Not  an  affiliate  as  of  February  28,  1999.
</FN>
</TABLE>

See  accompanying  Notes  to  Financial  Statements.


                         15  Oppenheimer Enterprise Fund
<PAGE>

Statement  of  Assets  and  Liabilities  February  28,  1999  (Unaudited)

<TABLE>
<CAPTION>
<S>                                                               <C>
Assets
Investments, at value (including repurchase agreement
of $53,400,000)-see accompanying statement:
Unaffiliated companies (cost $214,906,652)                        $263,596,071 
Affiliated companies (cost $2,941,809)                               2,913,750 
- -------------------------------------------------------------------------------
Receivables and other assets:
Shares of beneficial interest sold                                   2,894,155 
Investments sold                                                     1,961,495 
Interest and dividends                                                  21,048 
Other                                                                   16,422 
                                                                  -------------
Total assets                                                       271,402,941 

- -------------------------------------------------------------------------------
Liabilities
Bank overdraft                                                          76,447 
- -------------------------------------------------------------------------------
Payables and other liabilities:
Investments purchased                                                9,643,203 
Shares of beneficial interest redeemed                                 119,648 
Distribution and service plan fees                                      91,387 
Trustees' compensation-Note 1                                           71,428 
Shareholder reports                                                     22,050 
Other                                                                    2,954 
                                                                  -------------
Total liabilities                                                   10,027,117 
- -------------------------------------------------------------------------------

Net Assets                                                        $261,375,824 
                                                                  =============

Composition of Net Assets
Paid-in capital                                                   $202,495,721 
- -------------------------------------------------------------------------------
Accumulated net investment loss                                       (810,496)
- -------------------------------------------------------------------------------
Accumulated net realized gain on investment transactions            11,029,239 
- -------------------------------------------------------------------------------
Net unrealized appreciation on investments and translation of
assets and liabilities denominated in foreign currencies            48,661,360 
                                                                  -------------
Net assets                                                        $261,375,824 
                                                                  =============
</TABLE>


                         16  Oppenheimer Enterprise Fund
<PAGE>

<TABLE>
<CAPTION>
Net Asset Value Per Share
<S>                                                                                <C>
Class A Shares:
Net asset value and redemption price per share (based on net assets
of $152,269,397 and 7,167,962 shares of beneficial interest outstanding)           $21.24
Maximum offering price per share (net asset value plus sales charge
of 5.75% of offering price)                                                        $22.54
- -----------------------------------------------------------------------------------------
Class B Shares:
Net asset value, redemption price (excludes applicable contingent deferred
sales charge) and offering price per share (based on net assets of $91,057,637
and 4,402,841 shares of beneficial interest outstanding)                           $20.68
- -----------------------------------------------------------------------------------------
Class C Shares:
Net asset value, redemption price (excludes applicable contingent deferred 
sales charge) and offering price per share (based on net assets of $18,048,790
and 872,268 shares of beneficial interest outstanding)                             $20.69
</TABLE>

See  accompanying  Notes  to  Financial  Statements.


                         17  Oppenheimer Enterprise Fund
<PAGE>

Statement  of  Operations For the Six Months Ended February 28, 1999 (Unaudited)

<TABLE>
<CAPTION>
<S>                                                                       <C>
- --------------------------------------------------------------------------------------
Investment Income
Interest                                                                  $   931,809 
- --------------------------------------------------------------------------------------
Dividends                                                                      31,500 
                                                                         -------------
Total income                                                                  963,309 

- --------------------------------------------------------------------------------------
Expenses
Management fees-Note 4                                                        682,323 
- --------------------------------------------------------------------------------------
Distribution and service plan fees-Note 4:
Class A                                                                       130,714 
Class B                                                                       317,755 
Class C                                                                        63,654 
- --------------------------------------------------------------------------------------
Transfer and shareholder servicing agent fees-Note 4                          384,612 
- --------------------------------------------------------------------------------------
Shareholder reports                                                            65,256 
- --------------------------------------------------------------------------------------
Registration and filing fees                                                   19,977 
- --------------------------------------------------------------------------------------
Trustees' compensation-Note 1                                                  11,546 
- --------------------------------------------------------------------------------------
Legal, auditing and other professional fees                                     9,668 
- --------------------------------------------------------------------------------------
Custodian fees and expenses                                                     4,582 
- --------------------------------------------------------------------------------------
Insurance expenses                                                              2,550 
- --------------------------------------------------------------------------------------
Other                                                                          17,929 
                                                                         -------------
Total expenses                                                              1,710,566 
Less expenses paid indirectly-Note 4                                           (4,187)
                                                                         -------------
Net expenses                                                                1,706,379 

- --------------------------------------------------------------------------------------
Net Investment Loss                                                          (743,070)
- --------------------------------------------------------------------------------------
Realized and Unrealized Gain (Loss)
Net realized gain (loss) on:
Investments                                                                11,314,388 
Foreign currency transactions                                                  (2,171)
                                                                         -------------
Net realized gain                                                          11,312,217 

- --------------------------------------------------------------------------------------
Net change in unrealized appreciation or depreciation on:
Investments                                                                54,505,448 
Translation of assets and liabilities denominated in foreign currencies       103,731 
                                                                         -------------
Net change                                                                 54,609,179 
                                                                         -------------
Net realized and unrealized gain                                           65,921,396 
- --------------------------------------------------------------------------------------
Net Increase in Net Assets Resulting from Operations                      $65,178,326 
                                                                         =============
</TABLE>

See  accompanying  Notes  to  Financial  Statements.


                         18  Oppenheimer Enterprise Fund
<PAGE>

Statements  of  Changes  in  Net  Assets

<TABLE>
<CAPTION>
                                                         Six Months Ended     Year Ended
                                                         February 28, 1999    August 31,
                                                            (Unaudited)          1998
- ------------------------------------------------------------------------------------------
<S>                                                     <C>                  <C>
Operations
Net investment loss                                     $         (743,070)  $ (1,326,655)
- ------------------------------------------------------------------------------------------
Net realized gain                                               11,312,217     10,331,533 
- ------------------------------------------------------------------------------------------
Net change in unrealized appreciation or depreciation           54,609,179    (24,465,371)
                                                        -------------------  -------------
Net increase (decrease) in net assets resulting
from operations                                                 65,178,326    (15,460,493)

- ------------------------------------------------------------------------------------------
Distributions to Shareholders
Distributions from net realized gain:
Class A                                                         (1,826,095)    (4,786,108)
Class B                                                         (1,122,686)    (2,599,048)
Class C                                                           (228,443)      (542,632)

- ------------------------------------------------------------------------------------------
Beneficial Interest Transactions
Net increase in net assets resulting from
beneficial interest transactions-Note 2:
Class A                                                         41,676,097     35,326,895 
Class B                                                         26,022,257     26,047,046 
Class C                                                          4,905,043      4,821,481 

- ------------------------------------------------------------------------------------------
Net Assets
Total increase                                                 134,604,499     42,807,141 
Beginning of period                                            126,771,325     83,964,184 
                                                        -------------------  -------------
End of period (including accumulated net investment
losses of $810,496 and $67,426, respectively)           $      261,375,824   $126,771,325 
                                                        ===================  =============
</TABLE>

See  accompanying  Notes  to  Financial  Statements.


                         19  Oppenheimer Enterprise Fund
<PAGE>

Financial  Highlights

<TABLE>
<CAPTION>
                                            Class  A
                                            ---------------------------------------------
                                            Six  Months
                                            Ended
                                            February 28,
                                            1999        Year Ended August 31,
                                            (Unaudited)     1998      1997      1996(1)
- -----------------------------------------------------------------------------------------
<S>                                         <C>           <C>       <C>       <C>
Per Share Operating Data
Net asset value, beginning of period        $     14.72   $ 16.98   $ 15.48   $    10.00 
- -----------------------------------------------------------------------------------------

Income (loss) from investment operations:
Net investment loss                                (.05)     (.14)     (.09)        (.05)
Net realized and unrealized gain (loss)            6.89      (.75)     2.66         5.53 
                                            ------------  --------  --------  -----------

Total income (loss) from investment
operations                                         6.84      (.89)     2.57         5.48 

- -----------------------------------------------------------------------------------------
Distributions to shareholders from net
realized gain                                      (.32)    (1.37)    (1.07)           - 
- -----------------------------------------------------------------------------------------
Net asset value, end of period              $     21.24   $ 14.72   $ 16.98   $    15.48 
                                            ============  ========  ========  ===========

- -----------------------------------------------------------------------------------------
Total Return, at Net Asset Value(2)               46.87%   (5.65)%    17.88%       54.80%

- -----------------------------------------------------------------------------------------
Ratios/Supplemental Data
Net assets, end of period (in thousands)    $   152,269   $74,456   $52,455   $   44,421 
- -----------------------------------------------------------------------------------------
Average net assets (in thousands)           $   107,519   $72,059   $42,895   $   30,655 
- -----------------------------------------------------------------------------------------
Ratios to average net assets:
Net investment loss                           (0.50)%(3)   (0.81)%   (1.18)%   (0.59)%(3)
Expenses(4)                                     1.55%(3)     1.48%     1.50%     1.66%(3)
- -----------------------------------------------------------------------------------------
Portfolio turnover rate(5)                           43%      182%      142%         156%
<FN>
1.  For the period from November 7, 1995 (commencement of operations) to August 31, 1996.
2.  Assumes a $1,000 hypothetical initial investment on the business day before the first
day  of  the  fiscal  period  (or  commencement  of  operations),  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.
3.  Annualized.
</FN>
</TABLE>


                         20  Oppenheimer Enterprise Fund
<PAGE>

<TABLE>
<CAPTION>
                                            Class  B                                       Class  C
                                            ---------------------------------------------  --------------------------------
                                            Six  Months                                    Six  Months
                                            Ended                                          Ended
                                            February  28,                                  February  28,
                                            1999         Year Ended August 31,             1999         Year Ended August 31,
                                            (Unaudited)     1998      1997      1996(1)    (Unaudited)     1998      1997
- ---------------------------------------------------------------------------------------------------------------------------
<S>                                         <C>           <C>       <C>       <C>          <C>           <C>       <C>
Per Share Operating Data
Net asset value, beginning of period        $     14.38   $ 16.75   $ 15.39   $    10.00   $     14.38   $ 16.74   $ 15.39 
- ---------------------------------------------------------------------------------------------------------------------------
Income (loss) from investment operations:
Net investment loss                                (.06)     (.15)     (.18)        (.14)         (.06)     (.16)     (.18)
Net realized and unrealized gain (loss)            6.68      (.85)     2.61         5.53          6.69      (.83)     2.60 
                                            ------------  --------  --------  -----------  ------------  --------  --------
Total income (loss) from investment
operations                                         6.62     (1.00)     2.43         5.39          6.63      (.99)     2.42 
- ---------------------------------------------------------------------------------------------------------------------------
Distributions to shareholders from net
realized gain                                      (.32)    (1.37)    (1.07)           -          (.32)    (1.37)    (1.07)
- ---------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period              $     20.68   $ 14.38   $ 16.75   $    15.39   $     20.69   $ 14.38   $ 16.74 
                                            ============  ========  ========  ===========  ============  ========  ========

- ---------------------------------------------------------------------------------------------------------------------------
Total Return, at Net Asset Value(2)               46.44%   (6.43)%    17.03%       53.90%        46.52%   (6.38)%    16.97%
Ratios/Supplemental Data
- ---------------------------------------------------------------------------------------------------------------------------
Net assets, end of period (in thousands)    $    91,058   $43,570   $25,856   $   20,606   $    18,049   $ 8,746   $ 5,653 
- ---------------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands)           $    64,338   $39,003   $20,410   $   14,123   $    12,887   $ 7,908   $ 4,539 
- ---------------------------------------------------------------------------------------------------------------------------
Ratios to average net assets:
Net investment loss                           (1.25)%(3)   (1.58)%   (1.96)%   (1.37)%(3)    (1.25)%(3)   (1.58)%   (1.96)%
Expenses(4)                                     2.30%(3)     2.26%     2.27%     2.44%(3)      2.30%(3)     2.26%     2.27%
- ---------------------------------------------------------------------------------------------------------------------------
Portfolio turnover rate(5)                           43%      182%      142%         156%           43%      182%      142%


                                              1996(1)
                                            -----------
<S>                                         <C>
Per Share Operating Data
Net asset value, beginning of period        $    10.00 
- -------------------------------------------------------
Income (loss) from investment operations:
Net investment loss                               (.14)
Net realized and unrealized gain (loss)           5.53 
                                            -----------
Total income (loss) from investment
operations                                        5.39 
- -------------------------------------------------------
Distributions to shareholders from net
realized gain                                        - 
- -------------------------------------------------------
Net asset value, end of period              $    15.39 
                                            ===========

- -------------------------------------------------------
Total Return, at Net Asset Value(2)              53.90%
- -------------------------------------------------------
Ratios/Supplemental Data
Net assets, end of period (in thousands)    $    4,846 
- -------------------------------------------------------
Average net assets (in thousands)           $    3,472 
- -------------------------------------------------------
Ratios to average net assets:
Net investment loss                          (1.35)%(3)
Expenses(4)                                    2.43%(3)
- -------------------------------------------------------
Portfolio turnover rate(5)                         156%
<FN>
4.  The  expense  ratio  reflects  the  effect  of  gross  expenses  paid  indirectly  by  the  Fund.
5.  The  lesser  of  purchases  or sales of portfolio securities for a period, divided by the monthly average of the market
value  of  portfolio  securities  owned  during  the  period.  Securities with a maturity or expiration date at the time of
acquisition  of one year or less are excluded from the calculation. Purchases and sales of investment securities (excluding
short-term  securities)  for  the  period  ended  February  28,  1999,  were  $119,815,749  and  $64,917,307, respectively.
</FN>
</TABLE>

See  accompanying  Notes  to  Financial  Statements.


                         21  Oppenheimer Enterprise Fund
<PAGE>

Notes  to  Financial  Statements  (Unaudited)

- --------------------------------------------------------------------------------
1.  Significant  Accounting  Policies
Oppenheimer  Enterprise  Fund  (the  Fund)  is  registered  under the Investment
Company  Act  of  1940,  as  amended,  as  a  diversified,  open-end  management
investment  company.  The  Fund's  investment  objective  is  to  seek  capital
appreciation.  It  emphasizes  investments  in  common  stocks  and other equity
securities  of  "small-cap"  companies.  The  Fund's  investment  advisor  is
OppenheimerFunds, Inc. (the Manager). The Fund offers Class A, Class B and Class
C  shares.  Class  A  shares  are sold with a front-end sales charge, except for
purchases  greater  than  $1 million. Class A, Class B and Class C shares may be
subject  to  a  contingent  deferred  sales  charge.  All classes of shares have
identical  rights  to  earnings,  assets and voting privileges, except that each
class  has  its  own  distribution  and/or  service  plan,  expenses  directly
attributable  to  that class and exclusive voting rights with respect to matters
affecting  that  class.  Class  B  shares  will automatically convert to Class A
shares  six  years  after  the  date  of purchase. The following is a summary of
significant  accounting  policies  consistently  followed  by  the  Fund.

- --------------------------------------------------------------------------------
Investment  Valuation.  Portfolio  securities are valued at the close of the New
York  Stock  Exchange  on  each  trading day. Listed and unlisted securities for
which  such  information is regularly reported are valued at the last sale price
of  the  day  or, in the absence of sales, at values based on the closing bid or
the  last  sale  price  on  the  prior  trading  day.  Long-term  and short-term
"non-money  market"  debt  securities  are valued by a portfolio pricing service
approved  by the Board of Trustees. Such securities which cannot be valued by an
approved  portfolio  pricing service are valued using dealer-supplied valuations
provided the Manager is satisfied that the firm rendering the quotes is reliable
and  that  the  quotes  reflect  current  market  value,  or  are  valued  under
consistently  applied  procedures  established  by  the  Board  of  Trustees  to
determine  fair  value  in  good  faith.  Short-term  "money  market  type" debt
securities having a remaining maturity of 60 days or less are valued at cost (or
last  determined  market  value)  adjusted  for  amortization to maturity of any
premium  or  discount.


                         22  Oppenheimer Enterprise Fund
<PAGE>

- --------------------------------------------------------------------------------
Foreign  Currency Translation. The accounting records of the Fund are maintained
in  U.S.  dollars.  Prices  of  securities denominated in foreign currencies are
translated  into  U.S. dollars at the closing rates of exchange. Amounts related
to  the  purchase  and  sale  of  foreign  securities  and investment income are
translated  at  the rates of exchange prevailing on the respective dates of such
transactions.
     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.

- --------------------------------------------------------------------------------
Repurchase  Agreements.  The  Fund requires the custodian to take possession, to
have  legally  segregated  in  the  Federal Reserve Book Entry System or to have
segregated  within  the custodian's vault, all securities held as collateral for
repurchase agreements. The market value of the underlying securities is required
to  be  at least 102% of the resale price at the time of purchase. If the seller
of  the  agreement  defaults and the value of the collateral declines, or if the
seller  enters  an  insolvency  proceeding,  realization  of  the  value  of the
collateral  by  the  Fund  may  be  delayed  or  limited.

- --------------------------------------------------------------------------------
Allocation  of  Income, Expenses, Gains and Losses. Income, expenses (other than
those attributable to a specific class), gains and losses are allocated daily 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 continue to comply with provisions of the
Internal  Revenue  Code  applicable  to  regulated  investment  companies and to
distribute  all  of  its  taxable  income,  including  any  net realized gain on
investments  not  offset  by  loss  carryovers,  to  shareholders. Therefore, no
federal  income  or  excise  tax  provision  is  required.

- --------------------------------------------------------------------------------
Trustees' Compensation. The Fund has adopted a nonfunded 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
February  28,  1999,  a  provision  of  $1,621 was made for the Fund's projected
benefit  obligations  and  payments  of  $714  were  made  to  retired trustees,
resulting  in  an  accumulated  liability  of  $68,334  as of February 28, 1999.


                         23  Oppenheimer Enterprise Fund
<PAGE>

Notes  to  Financial  Statements  (Unaudited)  (Continued)

- --------------------------------------------------------------------------------
1.  Significant  Accounting  Policies  (continued)
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
annual  fees  they  are  entitled  to receive from the Fund. Under the plan, the
compensation  deferred  is  periodically adjusted as though an equivalent amount
had  been  invested  for  the Trustee in shares of one or more Oppenheimer funds
selected  by  the Trustee. The amount paid to the Trustee under the plan will be
determined  based  upon  the  performance  of  the  selected  funds. 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 income per
share.

- --------------------------------------------------------------------------------
Distributions  to  Shareholders. Dividends and distributions to shareholders are
recorded  on  the  ex-dividend  date.

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

- --------------------------------------------------------------------------------
Other. Investment transactions are accounted for on the date the investments are
purchased  or  sold  (trade  date)  and  dividend  income  is  recorded  on  the
ex-dividend  date.  Realized gains and losses on investments and options written
and  unrealized  appreciation  and  depreciation are determined on an identified
cost  basis,  which  is  the  same  basis  used for federal income tax purposes.
     The  preparation  of  financial  statements  in  conformity  with 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.


                         24  Oppenheimer Enterprise Fund
<PAGE>

- --------------------------------------------------------------------------------
2.  Shares  of  Beneficial  Interest
The Fund has authorized an unlimited number of no par value shares of beneficial
interest  of  each  class. Transactions in shares of beneficial interest were as
follows:

<TABLE>
<CAPTION>
                               Six Months Ended            Year Ended
                               February 28, 1999         August 31, 1998
                          -------------------------  -------------------------
                            Shares       Amount        Shares       Amount
- ------------------------------------------------------------------------------
<S>                       <C>         <C>            <C>         <C>
Class A:
Sold                      2,590,846   $ 50,328,114   2,577,394   $ 46,616,420 
Distributions reinvested     97,625      1,743,602     295,161      4,571,937 
Redeemed                   (579,783)   (10,395,619)   (902,443)   (15,861,462)
                          ----------  -------------  ----------  -------------
Net increase              2,108,688   $ 41,676,097   1,970,112   $ 35,326,895 
                          ==========  =============  ==========  =============

- ------------------------------------------------------------------------------
Class B:
Sold                      1,545,897   $ 29,149,586   1,709,642   $ 30,191,456 
Distributions reinvested     60,637      1,056,293     159,530      2,428,045 
Redeemed                   (232,617)    (4,183,622)   (384,289)    (6,572,455)
                          ----------  -------------  ----------  -------------
Net increase              1,373,917   $ 26,022,257   1,484,883   $ 26,047,046 
                          ==========  =============  ==========  =============

- ------------------------------------------------------------------------------
Class C:
Sold                        679,074   $ 12,392,795     421,843   $  7,464,131 
Distributions reinvested     12,525        218,068      33,204        505,369 
Redeemed                   (427,487)    (7,705,820)   (184,608)    (3,148,019)
                          ----------  -------------  ----------  -------------
Net increase                264,112   $  4,905,043     270,439   $  4,821,481 
                          ==========  =============  ==========  =============
</TABLE>

- --------------------------------------------------------------------------------
3.  Unrealized  Gains  and  Losses  on  Investments
As  of  February  28,  1999,  net  unrealized  appreciation  on  investments  of
$48,661,360  was  composed  of  gross  appreciation  of  $59,150,176,  and gross
depreciation  of  $10,488,816.


                         25  Oppenheimer Enterprise Fund
<PAGE>

Notes  to  Financial  Statements  (Unaudited)  (Continued)

- --------------------------------------------------------------------------------
4.  Management  Fees  and  Other  Transactions  with  Affiliates
Management  fees  paid  to  the  Manager  were in accordance with the investment
advisory  agreement  with  the Fund which provides for an annual fee of 0.75% of
the  first  $200  million of average annual net assets of the Fund, 0.72% of the
next  $200  million,  0.69%  of  the  next  $200 million, 0.66% of the next $200
million,  and  0.60% of average annual net assets in excess of $800 million. The
Fund's  management  fee for the six months ended February 28, 1999, was 0.75% of
average  annual  net  assets  for  each  class  of  shares.
     For the six months ended February 28, 1999, commissions (sales charges paid
by investors) on sales of Class A shares totaled $470,004, of which $132,087 was
retained  by  OppenheimerFunds  Distributor,  Inc.  (OFDI),  a subsidiary of the
Manager,  as  general  distributor,  and  by  an affiliated broker/dealer. Sales
charges advanced to broker/dealers by OFDI on sales of the Fund's Class A, Class
B  and  Class  C  shares  totaled  $50,931,  $660,134 and $40,885, respectively.
Amounts  paid to an affiliated broker/dealer for Class B and Class C shares were
$54,591 and $1,434, respectively. During the six months ended February 28, 1999,
OFDI  received  contingent  deferred  sales  charges  of  $62,775  and  $2,032,
respectively,  upon  redemption  of Class B and Class C shares, as reimbursement
for  sales  commissions  advanced  by  OFDI  at the time of sale of such shares.
     OppenheimerFunds Services (OFS), a division of the Manager, is the transfer
and  shareholder servicing agent for the Fund and other Oppenheimer funds. OFS's
total  costs  of  providing  such services are allocated ratably to these funds.
     Expenses  paid  indirectly  represent  a  reduction  of  custodian fees for
earnings  on  cash  balances  maintained  by  the  Fund.
     The  Fund  has  adopted a Service Plan for Class A shares to reimburse OFDI
for  a portion of its costs incurred in connection with the personal service and
maintenance  of  shareholder accounts that hold Class A shares. Reimbursement is
made quarterly at an annual rate that may not exceed 0.25% of the average annual
net assets of Class A shares of the Fund. OFDI uses the service fee to reimburse
brokers, dealers, banks and other financial institutions quarterly for providing
personal  service and maintenance of accounts of their customers that hold Class
A  shares. During the six months ended February 28, 1999, OFDI paid $6,098 to an
affiliated  broker/dealer  as  reimbursement  for  Class  A personal service and
maintenance  expenses.


                         26  Oppenheimer Enterprise Fund
<PAGE>

- --------------------------------------------------------------------------------
The  Fund  has  adopted  Distribution  and Service Plans for Class B and Class C
shares  to  compensate  OFDI  for  its costs in distributing Class B and Class C
shares  and  servicing  accounts.  Under the Plans, the Fund pays OFDI an annual
asset-based sales charge of 0.75% per year on Class B and Class C shares for its
services rendered in distributing Class B and Class C shares. OFDI also receives
a  service  fee  of  0.25% per year to compensate dealers for providing personal
services for accounts that hold Class B and Class C shares. Each fee is computed
on  the average annual net assets of Class B or Class C shares, determined as of
the close of each regular business day. During the six months ended February 28,
1999,  OFDI paid $1,508 to an affiliated broker/dealer as compensation for Class
B  personal  service and maintenance expenses and retained $267,702 and $43,340,
respectively,  as  compensation  for  Class  B and Class C sales commissions and
service  fee  advances, as well as financing costs. If either Plan is terminated
by  the  Fund,  the Board of Trustees may allow the Fund to continue payments of
the asset-based sales charge to OFDI for distributing shares before the Plan was
terminated.  As  of February 28, 1999, OFDI had incurred excess distribution and
servicing  costs  of  $1,571,499  for  Class  B  and  $125,042  for  Class  C.

- --------------------------------------------------------------------------------
5.  Illiquid  and  Restricted  Securities
As  of  February  28,  1999,  investments in securities included issues that are
illiquid  or  restricted.  Restricted  securities are often 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 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 intends to invest no 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 limit. The aggregate value of illiquid or restricted securities
subject  to  this  limitation  as  of  February  28, 1999, was $8,480,156, which
represents  3.24%  of  the  Fund's net assets, of which $6,830,156 is considered
restricted.  Information  concerning  restricted  securities  is  as  follows:

<TABLE>
<CAPTION>
                                                                  Valuation
                                                     Cost       Per Unit as of
Security                       Acquisition Dates   Per Unit   February 28, 1999
- --------------------------------------------------------------------------------
<S>                            <C>                <C>         <C>
Autonomous Technologies Corp.            6/12/97  $     3.00  $             6.41
- --------------------------------------------------------------------------------
Cyberian Outpost, Inc.                   3/12/98        2.65               11.94
- --------------------------------------------------------------------------------
Silver Diner, Inc.               7/10/96-1/14/98   1.37-5.50                1.43
</TABLE>


                         27  Oppenheimer Enterprise Fund
<PAGE>

Notes  to  Financial  Statements  (Unaudited)  (Continued)

- --------------------------------------------------------------------------------
6.  Bank  Borrowings
The  Fund  may borrow from a bank for temporary or emergency purposes including,
without  limitation,  funding of shareholder redemptions provided asset coverage
for  borrowings  exceeds  300%.  The  Fund  has  entered into an agreement which
enables  it  to participate with other Oppenheimer funds in an unsecured line of
credit  with  a bank, which permits borrowings up to $400 million, collectively.
Interest  is  charged  to each fund, based on its borrowings, at a rate equal to
the  Federal  Funds  Rate  plus 0.35%. Borrowings are payable 30 days after such
loan  is  executed.  The  Fund  also pays a commitment fee equal to its pro rata
share  of  the  average  unutilized  amount  of the credit facility at a rate of
0.0575%  per  annum.
     The Fund had no borrowings outstanding during the six months ended February
28,  1999.

- --------------------------------------------------------------------------------
7.  Other  Matters
The  Board  of  Trustees  approved  the inception of Class Y for the Fund, to be
offered  on  April  1,  1999.


                         28  Oppenheimer Enterprise Fund
<PAGE>


<PAGE>
<TABLE>
<CAPTION>
<S>                       <C>
- --------------------------------------------------------------------------------
Officers and Trustees     Leon Levy, Chairman of the Board of Trustees
                          Donald W. Spiro, Vice Chairman of the Board of Trustees
                          Bridget A. Macaskill, Trustee and President
                          Robert G. Galli, Trustee
                          Phillip A. Griffiths, Trustee
                          Benjamin Lipstein, Trustee
                          Elizabeth B. Moynihan, Trustee
                          Kenneth A. Randall, Trustee
                          Edward V. Regan, Trustee
                          Russell S. Reynolds, Jr., Trustee
                          Pauline Trigere, Trustee
                          Clayton K. Yeutter, Trustee
                          Jay W. Tracey, III, Vice President
                          George C. Bowen, Treasurer
                          Robert J. Bishop, Assistant Treasurer
                          Scott T. Farrar, Assistant Treasurer
                          Andrew J. Donohue, Secretary
                          Robert G. Zack, Assistant Secretary

- --------------------------------------------------------------------------------
Investment Advisor        OppenheimerFunds, Inc.

- --------------------------------------------------------------------------------
Distributor               OppenheimerFunds Distributor, Inc.

- --------------------------------------------------------------------------------
Transfer and Shareholder  OppenheimerFunds Services
Servicing Agent

- --------------------------------------------------------------------------------
Custodian of              The Bank of New York
Portfolio Securities

- --------------------------------------------------------------------------------
Independent Auditors      KPMG LLP

- --------------------------------------------------------------------------------
Legal Counsel             Gordon Altman Butowsky Weitzen Shalov & Wein
                          The financial statements included herein have been taken from the records
                          of the Fund without examination of the independent auditors.
                          This is a copy of a report to shareholders of Oppenheimer Enterprise
                          Fund. This report must be preceded or accompanied by a Prospectus of
                          Oppenheimer Enterprise Fund. For material information concerning the Fund,
                          see the Prospectus.
                          Shares of Oppenheimer funds are not deposits or obligations of any bank, are
                          not guaranteed by any bank, are not insured by the FDIC or any other agency,
                          and involve investment risks, including the possible loss of the principal
                          amount invested.
</TABLE>


                         29  Oppenheimer Enterprise Fund
<PAGE>

<TABLE>
<CAPTION>
OppenheimerFunds  Family

<S>                           <C>                             <C>
- -----------------------------------------------------------------------------------------
Real Asset Funds
- -----------------------------------------------------------------------------------------
Real Asset Fund               Gold & Special Minerals Fund

- -----------------------------------------------------------------------------------------
Global Stock Funds
- -----------------------------------------------------------------------------------------
Developing Markets Fund       International Growth Fund       Global Growth & Income Fund
International Small           Global Fund                     Europe Fund
  Company Fund                Quest Global Value Fund

- -----------------------------------------------------------------------------------------
Stock Funds
- -----------------------------------------------------------------------------------------
Enterprise Fund               MidCap Fund                     Growth Fund
Discovery Fund                Capital Appreciation Fund       Large Cap Growth Fund
Quest Small Cap Value Fund    Quest Capital Value Fund        Disciplined Value Fund
                                                              Quest Value Fund

- -----------------------------------------------------------------------------------------
Stock & Bond Funds
- -----------------------------------------------------------------------------------------
Main Street Growth &          Total Return Fund               Multiple Strategies Fund
  Income Fund(1)              Quest Balanced                  Disciplined Allocation Fund
Quest Opportunity             Value Fund                      Convertible Securities Fund
  Value Fund                  Capital Income Fund(2)

- -----------------------------------------------------------------------------------------
Taxable Bond Funds
- -----------------------------------------------------------------------------------------
International Bond Fund       Champion Income Fund            U.S. Government Trust
World Bond Fund               Strategic Income Fund           Limited-Term Government Fund
High Yield Fund               Bond Fund

- -----------------------------------------------------------------------------------------
Municipal Bond Funds
- -----------------------------------------------------------------------------------------
California Municipal Fund(3)  Pennsylvania Municipal Fund(3)  Rochester Division:
Florida Municipal Fund(3)     Municipal Bond Fund             Rochester Fund Municipals
New Jersey Municipal Fund(3)  Insured Municipal Fund          Limited Term New York
New York Municipal Fund(3)    Intermediate Municipal Fund     MMunicipal Fund

- -----------------------------------------------------------------------------------------
Money Market Funds(4)
- -----------------------------------------------------------------------------------------
Money Market Fund             Cash Reserves
<FN>
1.  On  12/22/98,  the  Fund's  name  was changed from "Main Street Income & Growth Fund."
2.  On  4/1/99,  the  Fund's  name  was  changed  from  "Equity  Income  Fund."
3.  Available  only  to  investors  in  certain  states.
4.  An  investment  in money market funds is neither insured nor guaranteed by the Federal
Deposit  Insurance  Corporation  or  any other government agency. Although these funds may
seek  to  preserve the value of your investment at $1.00 per share, it is possible to lose
money  by  investing  in  these  funds.
Oppenheimer  funds  are distributed by OppenheimerFunds Distributor, Inc., Two World Trade
Center, New  York,  NY  10048-0203.
Copyright  1999  OppenheimerFunds,  Inc.  All  rights  reserved.
</FN>
</TABLE>


                         30  Oppenheimer Enterprise Fund
<PAGE>








<PAGE>

Information  and  services

As  an  Oppenheimer  fund shareholder, you have some special privileges. Whether
it's  automatic investment plans, informative newsletters and hotlines, or ready
account access, you can benefit from services designed to make investing simple.
     And  when  you  need  help, our Customer Service Representatives are only a
toll-free  phone  call away. They can provide information about your account and
handle  administrative  requests.  You can reach them at our General Information
number.
     When  you  want  to make a transaction, you can do it easily by calling our
toll-free  Telephone  Transactions  number  or  by visiting our website. And, by
enrolling  in  AccountLink,  a  convenient service that "links" your Oppenheimer
funds  accounts  and  your  bank  checking  or  savings account, you can use the
Telephone  Transactions  number  or  website  to  make  investments.
     For  added  convenience,  you  can  get  automated  information  with
OppenheimerFunds  PhoneLink  service,  available  24 hours a day, 7 days a week.
PhoneLink  gives  you  access  to  a  variety  of  fund,  account,  and  market
information.  Of  course,  you  can  always  speak  with  a  Customer  Service
Representative  during  the  General  Information  hours  shown  at  the  left.
     You  can  count  on  us  whenever  you  need  assistance.  That's  why  the
International  Customer  Service  Association,  an  independent,  nonprofit
organization  made  up  of  over 3,200 customer service management professionals
from  around  the  country,  honored  the  Oppenheimer  funds'  transfer  agent,
OppenheimerFunds  Services,  with  their  Award  of  Excellence  in  1993.
     So  call  us  today,  or  visit  us  at  our  website  at
www.oppenheimerfunds.com-we're  here  to  help.

                                                                OppenheimerFunds
                                                               Distributor, Inc.


Internet
24-hr  access  to  account  information.
Online  transactions  now  available
www.oppenheimerfunds.com

General  Information
Mon-Fri  8:30am-9pm  ET
Sat  10am-4pm  ET
1-800-525-7048

Account  Transactions
Mon-Fri  8:30am-9pm  ET
Sat  10am-4pm  ET
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PhoneLink
24-hr  automated  information
and  automated  transactions
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Telecommunication  Device
for  the  Deaf  (TDD)
Mon-Fri  8:30am-6pm  ET
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OppenheimerFunds
Information  Hotline
24  hours  a  day, timely and insightful messages on the economy and issues that
affect  your investments
1-800-835-3104

RS 0885.001.0299    April 29, 1999


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