KEYSTONE OMEGA FUND
N-30D, 1996-09-04
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<PAGE>
[KEYSTONE COVER]

KEYSTONE

[PHOTO -- CLIMBER ON TOP OF SUMMIT]

OMEGA
FUND


[logo]

SEMIANNUAL REPORT
JUNE 30, 1996

<PAGE>

PAGE 1 
- ------------------------------------------------
Keystone Omega Fund 
Seeks maximum capital growth from common stocks. 

Dear Shareholder: 

We are writing to report to you on the activities of Keystone Omega Fund for 
the six-month period which ended June 30, 1996. Following this letter, we 
have included an interview with your Fund manager discussing portfolio 
strategy. 

Performance 

For the periods which ended June 30, 1996, your Fund produced the following 
returns: 

  Class A shares returned 3.24% for the six-month period and 21.92% for the 
twelve-month period. 

  Class B shares returned 2.78% for the six-month period and 20.80% for the 
twelve-month period. 

  Class C shares returned 2.77% for the six-month period and 20.76 for the 
twelve-month period. 

  For the same periods, the Standard & Poor's 500, a broad-based index of 
common stocks, returned 10.09% for six months and 25.99% for twelve months. 

  In contrast to your Fund's long run record of positive performance, its most 
recent performance was disappointing. These short term results reflected a 
more cautious investment strategy that we adopted at the beginning of 1996. 
This strategy may have been premature in view of the strong market rally in 
the following months. Longer term, we believe this cautious strategy may have 
been justified as witnessed by the sharp correction in stock prices in July, 
after the close of your Fund's fiscal period. 

  At the beginning of this year we became concerned about the sustainability 
of the long market rally, especially after the excellent returns of last 
year. At the end of 1995 technology stocks had been one of the best 
performing sectors, and as a result, we decided to reduce our holdings in 
this volatile area. At the same time, we broadened your Fund's industry 
diversification. 

  In the first half of 1996 the market and technology stocks rallied. As a 
result, we did not fully participate in the rally. While our portfolio 
adjustments may have been premature, we believe we took a prudent step in 
view of market conditions. 

  After the close of the period the stock market experienced a sharp 
correction, which brought prices down 10-15% as of late July. We think this 
correction was healthy for the market by bringing stock valuations down to 
more reasonable levels. We were expecting the possibility of a correction and 
we think your Fund was well positioned for it. 

A disciplined approach 

In selecting stocks for the portfolio, we continue to employ a disciplined 
strategy. We look for companies with earnings growth rates that exceed the 
average growth rate of companies contained in the Standard & Poor's 500 
Index. We also emphasize companies that are leaders in their industry with 
strong management. These companies typically have new products or services 
that we believe provide a competitive advantage. 

Looking ahead 

Our long-term outlook for stocks is favorable, especially with stock 
valuations now at more reasonable levels. We believe the correction helped to 
wring out some of the excesses in the market, and provided opportunities to 
add to selected holdings at lower prices. Going forward we expect economic 
growth to slow but remain healthy in the second half of the year. As a 
result, interest rates should moderate and inflation should remain under 
control. In this environment we expect the prospects for selected companies 
to be attractive. 
                                --Continued-- 

<PAGE>
 
PAGE 2 
- ------------------------------------------------
Keystone Omega Fund 

  As you evaluate your investment and market conditions, we encourage you to 
remember a few investment principles that have withstood the test of time in 
all types of markets. Diversify your investments. By putting your money in 
different types of investments, you can minimize your risk. Be patient. A 
long term approach can provide more consistent results than trying to time 
the market. Invest regularly. By making periodic investments over time, you 
can lower your average cost per share. Of course, your investment will 
fluctuate with market conditions, and there is no assurance that it will be 
worth more when you sell shares. 

  Your investment adviser can help you with these strategies by developing a 
plan to meet your particular needs. He or she is a professional with the 
resources and expertise to help you achieve your investment goals. We 
encourage you to take advantage of the services your adviser can provide. 

  We appreciate your continued support of Keystone Omega Fund. If you have any 
questions or comments about your investment, please feel free to write to us. 

Sincerely, 

/s/ Albert H. Elfner, III 
                                           [PHOTO OF ALBERT H. ELFNER, III] 
Albert H. Elfner, III 
Chairman and President 
Keystone Investments, Inc. 

/s/ George S. Bissell 
                                             [PHOTO OF GEORGE S. BISSELL] 
George S. Bissell 
Chairman of the Board 
Keystone Funds 

August 1996 

[DALBAR GRAPHIC]  Dalbar Key Honors 
                  Honoring Commitment to Excellence 
                  Keystone was recently recognized by Dalbar, an independent 
                  mutual fund rating organization, for demonstrating a 
                  commitment to serving the needs of customers. The award is 
                  intended to distinguish companies who are committed to 
                  investors and have a proven ability to provide good 
                  service. 

Keystone Investment Insight Line for Shareholders 

Now you can keep up-to-date on your fund's current strategy and outlook by 
calling Keystone Investment Insight Line. You can hear Keystone portfolio 
managers discuss their latest strategies, or listen to Keystone's 
overall market outlook from James McCall, chief investment officer. Of 
course, your financial adviser can provide you with more complete information 
on Keystone Funds. This service is available 24 hours a day, seven days a 
week and updated at least monthly. 

Keystone Investment Insight Line    1-800-346-3858, Press 2 after the greeting 
[FEATURES GRAPHIC OF A TELEPHONE AND RECEIVER] 

<PAGE>
 
PAGE 3 
- ------------------------------------------------

                              A Discussion With 
                              Your Fund Manager 

                       [PHOTO OF MAUREEN E. CULLINANE] 

                                  [CAPTION] 

Maureen E. Cullinane is senior portfolio manager of your Fund and leads
Keystone's growth stock team. A Chartered Financial Analyst, Ms. Cullinane
has 20 years of investment experience. She received BA and MA degrees from
Emmanuel College with post-graduate study at the Universite de Paris. She
holds an MBA from Boston University. The growth team is comprised of Ms.
Cullinane and portfolio manager Margery C. Parker, with support from
Keystone's 11 equity analysts. Together they search for stocks of companies
with above-average earnings growth rates.

                               [END CAPTION]

Q   What was the investment climate like during the six-month period? 

A  The period was generally positive for growth stocks, but it was 
characterized by increasing price volatility and uncertainty. After 18 months 
of excellent stock market gains and a favorable investment environment, many 
investors wondered how long the rally could last. A jump in the February 
employment figures caused many to believe that growth was stronger than 
expected. Bond investors worried that this spurt in growth, if sustained, 
would heat up the economy and lead to higher inflation. Because inflation can 
erode bond yields, interest rates rose. This contributed to market 
uncertainty as investors attempted to gauge the growth of the economy. 

Q   How did this effect your selection process? 

A  It was a difficult period for stock selection because the market was being 
driven more by short-term economic factors than by company earnings. In some 
cases stocks with good earnings and solid market positions declined in price 
because quarterly earnings were reported at the level expected. Investors had 
come to expect that reported corporate earnings should exceed estimates. 
Also, in contrast to last year, there has been little industry leadership as 
investors rotated in and out of various stock sectors. 

Q   How did you manage the Fund in this environment? 

A  This market has not favored any major investment theme or single industry 
sector over another. So, we cut back in several sectors that we had been 
emphasizing and increased the portfolio's diversification. With our 
individual security selection, we focused on companies that we believed had 
demonstrated consistent earnings growth over a long period of time. Most were 
established companies with strong products or global franchises. In our 
opinion, these companies had the best chance of providing reliable 
performance in an uncertain market. 

Q   Where did you cut back? 

A  While the percentage invested in technology stocks remained about the same 
at the beginning and end of the period--at 23% of net assets--we made 
significant changes within the sector. We eliminated 

Fund Profile 
Objective: Seeks maximum capital growth from common stocks. 
Commencement of investment operations: February 8, 1968 
Number of stocks: 70 
Net assets: $253 million 
Newspaper listing: "Omeg" 

<PAGE>
 
PAGE 4 
- ----------------------------------------------------------------
Keystone Omega Fund 

The Omega Investment Discipline 
Management carefully selects growth stocks which meet 
Omega's specific investment criteria: 
(bullet) Earnings growth rates which exceed the S&P 500 
(bullet) Strong management 
(bullet) Industry leadership 
(bullet) New products or services that are believed to provide a 
         competitive advantage. 

most of our electronics holdings, as we believed supply/demand imbalances for 
the industry would reduce the growth rates for electronics companies and, in 
turn, would impact stock performance. Instead, we focused on software and 
telecommunications industries, where the demand was accelerating for 
productivity tools and faster channels of communications. 

Q   What were some of the software and telecommunications holdings you 
favored? 

A  We added Microsoft, a leader in business and consumer software and we 
retained Winstar Communications. Winstar specializes in radio communications 
and should be a beneficiary of the recently deregulated local 
telecommunications industry. We also continued to hold Parametric Technology, 
a developer of industrial design software. 

Q   Where else did you cut back? 

A  We reduced the Fund's weighting in drug stocks from 13.4% of net assets on 
December 31, 1995 to about 10% of net assets on June 30, 1996. The primary 
focus of our reduction was biotechnology stocks. Most biotech companies are 
still in the investment phase of their life cycles, meaning that they do not 
have any earnings. In a period of higher interest rates, the valuation of 
future earnings potential can be called into question. Although we believe in 
the long-term prospects for many biotechnology companies, we reduced our 
investment in this area in favor of major drug companies. We maintained our 
holdings of Gilead Sciences, however, as we believed in the company's 
research and in their progress toward developing new treatments for viral 
diseases. 

Q   Which major drug companies did you add? 

A  We added American Home Products, Johnson & Johnson and Rhone Poulenc Rorer 
to our drug holdings. In contrast to the biotechnology companies, these major 
pharmaceutical companies have been reporting good near-term earnings growth. 

Q   What were some of the established companies you emphasized? 

A  We increased our holdings of General Electric, a solid contributor to your 
Fund's performance during the period. Through additional investment and stock 
appreciation, GE became the Fund's largest holding as of the end of the 
period. This capital goods company comprised 4.3% of net assets on June 30, 
1996. GE is a well managed, diversified company that we think 

Top 10 Holdings 
as of June 30, 1996 
<TABLE>
<CAPTION>
                                                Percentage of 
Company                   Industry              net assets 
- ---------------------------------------------------------------
<S>                       <C>                         <C>
General Electric          Capital goods               4.3 
- ---------------------------------------------------------------
HFS                       Amusements                  3.5 
- ---------------------------------------------------------------
CUC International         Consumer goods              2.9 
- ---------------------------------------------------------------
ENSCO International       Oil services                2.6 
- ---------------------------------------------------------------
Microsoft                 Software services           2.5 
- ---------------------------------------------------------------
Johnson & Johnson         Drugs                       2.3 
- ---------------------------------------------------------------
Coca Cola                 Foods                       2.2 
- ---------------------------------------------------------------
Cardinal Health           Health care                 2.1 
- ---------------------------------------------------------------
Tidewater                 Oil services                2.1 
- ---------------------------------------------------------------
Bank of Boston            Finance                     2.1 
- ---------------------------------------------------------------

</TABLE>

<PAGE>
 
PAGE 5 
- ------------------------------------------------

Top 5 Industries 
as of June 30, 1996 
<TABLE>
<CAPTION>
                         Percentage of 
Industry                 net assets 
<S>                           <C>
- --------------------------------------
Drugs                          9.9 
- --------------------------------------
Software services              7.3 
- --------------------------------------
Oil services                   7.1 
- --------------------------------------
Finance                        7.0 
- --------------------------------------
Telecommunications             7.0 
- --------------------------------------
</TABLE>


excels in nearly every business line. Today the company's businesses range 
from power generating equipment and jet engines to financial services and 
television broadcasting (NBC). We anticipate consistent earnings growth for 
GE as a result of its excellent management, strong product franchises and 
global presence. 

  We also increased our holdings of HFS. Formerly known as Hospitality 
Franchise Systems, HFS is the world's largest franchisor of hotels, such as 
Ramada, Days Inn and Howard Johnson. The company has acquired Avis Rent-A-Car 
and the Century 21 residential real estate system. The company should 
continue to benefit from the numerous cross-selling opportunities offered by 
each of these divisions, as well as from the opportunity to expand 
internationally. As with other fund holdings, HFS fits our investment 
criteria: strong management, industry leadership and numerous marketing 
opportunities. 

Q   You increased holdings of oil service stocks. What was attractive about 
them? 

A  Several factors have made the oil service sector more attractive to 
investors. First, the industry is emerging from a long period of downsizing, 
the result of overbuilding in the 1980s. There are fewer participants today 
as the industry has consolidated. With low inventories of natural gas and 
higher energy prices, more projects are being funded and demand for oil 
service equipment has accelerated. ENSCO, formerly known as Energy Services 
Company, has been one of our favorite investments in this area. We have added 
Diamond Offshore, Tidewater and Weatherford to the portfolio in anticipation 
of improved earnings over the next year. 

Q   What is your outlook? 

A  Despite the strong economic reports in the first half of 1996, we believe 
economic growth should slow to a more moderate pace and inflation should 
remain relatively low during the second half. We believe the recent market 
correction in July has been healthy for the market, helping to reduce market 
risk and increase the attractiveness of selected stocks. We think the 
fundamentals for many individual companies are positive, and stocks with 
solid financials and demonstrated earnings records should provide the best 
potential returns in the months ahead. 

                                  [diamond] 

                      This column is intended to answer 
              questions about your Fund. If you have a question 
                  you would like answered, please write to: 
                   Keystone Investment Distributors Company 
                 Attn: Shareholder Communications, 22nd Floor 
                             200 Berkeley Street, 
                      Boston, Massachusetts 02116-5034. 

<PAGE>
 
PAGE 6 
- ------------------------------------------------
Keystone Omega Fund 

                           Your Fund's Performance 

                               [MOUNTAIN CHART] 
            Growth of an investment in Keystone Omega Fund Class A 

<TABLE>
<CAPTION>
                            Initial Investment   Reinvested Distributions 
         <S>                 <C>                     <C>
         6/86                 9,425                   9,425 
         6/87                 9,917                  11,603 
         6/88                 8,115                  10,997 
         6/89                 9,324                  12,744 
         6/90                10,314                  15,983 
         6/91                 9,727                  17,642 
         6/92                 9,840                  20,850 
         6/93                10,166                  25,006 
         6/94                 9,176                  24,934 
         6/95                10,682                  30,149 
         6/96                10,925                  36,759 
</TABLE>
         A $10,000 investment in Keystone Omega Fund Class A made on 
         June 30, 1986 with all distributions reinvested was worth 
         $36,759 on June 30, 1996. Past performance is no guarantee 
         of future results. 

                             [END MOUNTAIN CHART] 

Class A shares are reported at the current maximum front-end sales charge of 
5.75%. 

  Class B shares were initially offered on August 2, 1993. Shares purchased 
after June 1, 1995 are subject to a contingent deferred sales charge (CDSC) 
that declines from 5% to 1% over six years from the month purchased. 
Performance assumes that shares were redeemed after the end of a one-year 
holding period and reflects the deduction of a 4% CDSC. 

  Class C shares were initially offered on August 2, 1993. Performance 
reflects the return you would have received for holding shares for one year 
and redeeming after the end of the period. 

Six-Month Performance                                      as of June 30, 1996 
- -----------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                           Class A       Class B       Class C 
<S>                            <C>            <C>           <C>           <C>
Total returns*                                  3.24%         2.78%         2.77% 
Net asset value                12/31/95       $19.56        $19.10        $19.13 
                                6/30/96       $18.43        $17.87        $17.90 
Dividends                                      None          None          None 
Capital gains                                 $ 1.78        $ 1.78        $ 1.78 
</TABLE>

*Before deduction of front-end or contingent deferred sales 
charge (CDSC). 

Historical Record                                          as of June 30, 1996 
- ------------------------------------------------------------------------------
<TABLE>
<CAPTION>
Cumulative total returns                  Class A     Class B     Class C 
<S>                                        <C>          <C>         <C>
1-year w/o sales charge                     21.92%      20.80%      20.76% 
1-year                                      14.91%      16.80%      20.76% 
5-year                                      96.38%        --          -- 
10-year                                    267.59%        --          -- 
Life of Class                                --         39.05%      42.22% 

Average annual returns 
1-year w/o sales charge                     21.92%      20.80%      20.76% 
1-year                                      14.91%      16.80%      20.76% 
5-year                                      14.45%        --          -- 
10-year                                     13.90%        --          -- 
Life of Class                                --         11.98%      12.85% 
</TABLE>
  The investment return and principal value will fluctuate so that your 
shares, when redeemed, may be worth more or less than the original cost. 
Performance for each class will differ. 

  You may exchange your shares for another Keystone fund by phone or in 
writing for a $10 fee. The exchange fee is waived for individual investors 
who make an exchange using Keystone's Automated Response Line (KARL). The 
Fund reserves the right to change or terminate the exchange offer. 

<PAGE>
 
PAGE 7 
- ------------------------------------------------

                                  Glossary of 
                              Mutual Fund Terms 

  MUTUAL FUND--A company which combines the investment money of many people 
whose financial goals are similar, and invests that money in a variety of 
securities. A mutual fund allows the smaller investor the benefits of 
diversification, professional management and constant supervision usually 
available only to large investors. 

  PORTFOLIO MANAGER--An investment professional who is responsible for 
managing a portfolio's assets prudently and making appropriate investment 
decisions, such as which securities to buy, hold and sell, based on the 
investment objectives of the portfolio. 

  STOCK--Equity or ownership interest in a corporation, which represents a 
claim on the corporation's assets and earnings. 

  BOND--Security issued by a government or corporation to those from whom it 
has borrowed money. A bond usually promises to pay interest income to the 
bondholder at regular intervals and to repay the entire amount borrowed at 
maturity date. 

  CONVERTIBLE SECURITY--A corporate security (usually preferred stock or 
bonds) that is exchangeable for a set number of another security type 
(usually common stocks) at a pre-stated price. 

  MONEY MARKET FUND--A mutual fund whose assets are invested in a diversified 
portfolio of short-term securities, including commercial paper, bankers' 
acceptances, certificates of deposit and other short-term instruments. The 
fund pays income which can fluctuate daily. Liquidity and safety of principal 
are primary objectives. 

  NET ASSET VALUE (NAV) PER SHARE--The value of one share of a mutual fund. 
The NAV per share is determined by subtracting a fund's total liabilities 
from its total assets, and dividing that amount by the number of fund shares 
outstanding. 

  DIVIDEND--A per share distribution of the income earned from the fund's 
portfolio holdings. When a dividend distribution is made, the fund's net 
asset value drops by the amount of the distribution because the distribution 
is no longer considered part of the fund's assets. 

  CAPITAL GAIN--The profit from the sale of securities, less any losses. 
Capital gains are paid to fund shareholders on a per share basis. When a 
capital gain distribution is made, the fund's net asset value drops by the 
amount of the distribution because the distribution is no longer considered 
part of the fund's assets. 

  YIELD--The annualized rate of income as measured against the current net 
asset value of fund shares. 

  TOTAL RETURN--The change in value of a fund investment over a specified 
period of time, taking into account the change in a fund's market price and 
the reinvestment of all fund distributions. 

  SHORT-TERM--An investment with a maturity of one year or less. 

  LONG-TERM--An investment with a maturity of greater than one year. 

  AVERAGE MATURITY--The average number of days until the notes, drafts, 
acceptances, bonds or other debt instruments in a portfolio become due and 
payable. 

  OFFERING PRICE--The offering price of a share of a mutual fund is the price 
at which the share is sold to the public. 

<PAGE>
 
PAGE 8 
- ------------------------------------------------
Keystone Omega Fund 

SCHEDULE OF INVESTMENTS--June 30, 1996 
<TABLE>
<CAPTION>
(Unaudited)                                                      Market 
                                                 Shares           Value 
 --------------------------------------------------------------------------- 
<S>                                             <C>               <C>
COMMON STOCKS (97.2%) 
ADVERTISING & PUBLISHING (2.3%) 
Clear Channel Communications, Inc. (a)            35,000       $ 2,883,125 
Renaissance Communications Corp. (a)              90,000         2,902,500 
 --------------------------------------------------------------------------- 
                                                                 5,785,625 
 --------------------------------------------------------------------------- 
AEROSPACE (1.0%) 
America West Airlines, Inc. (a)                  112,100         2,466,200 
 --------------------------------------------------------------------------- 
AMUSEMENTS (3.4%) 
HFS, Inc. (a)                                    125,000         8,750,000 
 --------------------------------------------------------------------------- 
AUTOMOTIVE (4.0%) 
Chrysler Corp.                                    50,000         3,100,000 
Ford Motor Co.                                    90,000         2,913,750 
Gentex Corp. (a)                                 210,000         4,068,750 
 --------------------------------------------------------------------------- 
                                                                10,082,500 
 --------------------------------------------------------------------------- 
BUILDING MATERIALS (3.2%) 
Fastenal Co.                                      60,000         2,617,500 
Oakwood Homes Corp.                              118,000         2,433,750 
Sherwin-Williams Co.                              65,000         3,022,500 
 --------------------------------------------------------------------------- 
                                                                 8,073,750 
 --------------------------------------------------------------------------- 
BUSINESS SERVICES (6.0%) 
GTS Duratek, Inc.                                 65,000         1,048,125 
Molten Metal Technology, Inc. (a)                105,500         3,099,062 
Peak Technologies Group, Inc. (a)                152,300         3,540,975 
Thermo Electron Corp. (a)                         97,500         4,058,438 
Thermedics, Inc. (a)                             135,000         3,375,000 
 --------------------------------------------------------------------------- 
                                                                15,121,600 
 --------------------------------------------------------------------------- 
CAPITAL GOODS (5.1%) 
AGCO Corp.                                        73,600         2,042,400 
General Electric Co.                             125,000        10,812,500 
 --------------------------------------------------------------------------- 
                                                                12,854,900 
 --------------------------------------------------------------------------- 
CHEMICALS (4.2%) 
du Pont (E.I.) de Nemours                         45,000         3,560,625 
Hanna M.A. Co.                                   172,500         3,600,937 
Morton International, Inc.                        95,000         3,538,750 
 --------------------------------------------------------------------------- 
                                                                10,700,312 
 --------------------------------------------------------------------------- 
CONSUMER GOODS (2.9%) 
CUC International, Inc. (a)                      210,000       $ 7,455,000 
 --------------------------------------------------------------------------- 
DRUGS (9.9%) 
American Home Products Corp.                      53,300         3,204,662 
Gilead Sciences, Inc. (a)                        200,600         5,040,075 
Johnson & Johnson                                120,000         5,940,000 
Rhone Poulenc Rorer, Inc.                         55,000         3,691,875 
SmithKline Beecham PLC                            50,000         2,718,750 
Warner-Lambert Co.                                80,000         4,400,000 
 --------------------------------------------------------------------------- 
                                                                24,995,362 
 --------------------------------------------------------------------------- 
ELECTRONICS (2.7%) 
Analog Devices, Inc. (a)                          82,500         2,103,750 
Intel Corp.                                       65,000         4,773,438 
 --------------------------------------------------------------------------- 
                                                                 6,877,188 
 --------------------------------------------------------------------------- 
FINANCE (7.0%) 
BISYS Group, Inc. (The) (a)                      120,000         4,507,500 
Bank of Boston Corp.                             104,700         5,182,650 
Federal Home Loan & Mortgage Corp.                48,700         4,163,850 
TCF Financial Corp.                              120,000         3,990,000 
 --------------------------------------------------------------------------- 
                                                                17,844,000 
 --------------------------------------------------------------------------- 
FOODS (4.2%) 
Coca Cola Company                                115,000         5,620,625 
Kellogg Co.                                       35,000         2,563,750 
Sara Lee Corp.                                    80,000         2,590,000 
 --------------------------------------------------------------------------- 
                                                                10,774,375 
 --------------------------------------------------------------------------- 
HEALTH CARE (3.2%) 
Cardinal Health, Inc.                             75,000         5,409,375 
Medaphis Corp. (a)                                66,000         2,619,375 
 --------------------------------------------------------------------------- 
                                                                 8,028,750 
 --------------------------------------------------------------------------- 
INSURANCE (1.1%) 
American International Group, Inc.                27,000         2,662,875 
 --------------------------------------------------------------------------- 
NATURAL GAS (3.4%) 
Anadarko Petroleum Corp.                          65,000         3,770,000 
Nuevo Energy Corp. (a)                           150,000         4,837,500 
 --------------------------------------------------------------------------- 
                                                                 8,607,500 
</TABLE>

<PAGE>
 
PAGE 9 
- ------------------------------------------------
<TABLE>
<CAPTION>
                                                                 Market 
                                                 Shares           Value 
 --------------------------------------------------------------------------- 
<S>                                            <C>
OFFICE & BUSINESS EQUIPMENT (2.6%) 
EMC Corp. (a)                                     250,000    $   4,656,250 
Parametric Technology Corp. (a)                    46,200        2,001,038 
 --------------------------------------------------------------------------- 
                                                                 6,657,288 
 --------------------------------------------------------------------------- 
OIL (1.9%) 
Exxon Corp.                                        30,000        2,606,250 
Mobil Corp.                                        20,000        2,242,500 
 --------------------------------------------------------------------------- 
                                                                 4,848,750
 --------------------------------------------------------------------------- 
OIL SERVICES (7.1%) 
Diamond Offshore Drilling, Inc. (a)                50,000        2,862,500 
ENSCO International, Inc. (a)                     200,000        6,500,000 
Tidewater, Inc.                                   119,200        5,229,900 
Weatherford Enterra, Inc.                         110,300        3,309,000 
 --------------------------------------------------------------------------- 
                                                                17,901,400 
 --------------------------------------------------------------------------- 
PAPER & PACKAGING (0.9%) 
Willamette Industries, Inc.                        40,000        2,375,000 
 --------------------------------------------------------------------------- 
RETAIL (5.8%) 
Corporate Express, Inc. (a)                        95,400        3,821,963 
Express Scripts, Inc. (a)                          50,000        2,293,750 
Petsmart, Inc. (a)                                 60,000        2,850,000 
Staples, Inc. (a)                                 192,000        3,732,000 
Sunglass Hut International, Inc. (a)               84,000        2,042,250 
 --------------------------------------------------------------------------- 
                                                                14,739,963 
 --------------------------------------------------------------------------- 
SOFTWARE SERVICES (7.3%) 
America Online, Inc. (a)                           55,000        2,399,375 
Epic Design Technology, Inc. (a)                   85,000        2,188,750 
Microsoft Corp. (a)                                53,000        6,363,313 
Sterling Software, Inc.                            30,600        2,356,200 
System Software Associates, Inc.                  140,000        2,406,250 
Wonderware Corp. (a)                              150,000        2,850,000 
 --------------------------------------------------------------------------- 
                                                                18,563,888 
 --------------------------------------------------------------------------- 
TELECOMMUNICATIONS (7.0%) 
Airtouch Communications, Inc. (a)                  60,000    $   1,695,000 
Allen Group Inc.                                   92,500        2,011,875 
Brooks Fiber Properties, Inc. (a)                  59,500        1,956,062 
Cisco Systems, Inc. (a)                            58,000        3,287,875 
Tellabs Inc. (a)                                   40,000        2,675,000 
3Com Corp (a)                                      50,000        2,284,374 
Vodafone Group PLC                                 36,000        1,327,500 
Winstar Communications, Inc. (a)                  100,000        2,487,500 
 --------------------------------------------------------------------------- 
                                                                17,725,186 
 --------------------------------------------------------------------------- 
TRANSPORTATION (1.0%) 
Fritz Companies, Inc. (a)                          75,000        2,418,750 
 --------------------------------------------------------------------------- 
TOTAL COMMON STOCKS 
(COST--$219,508,258)                                           246,310,162 
 --------------------------------------------------------------------------- 
                                                Maturity 
                                                  Value 
 --------------------------------------------------------------------------- 
SHORT-TERM INVESTMENTS (2.3%) 
REPURCHASE AGREEMENTS (2.3%) 
Investments in repurchase agreements in a 
joint trading account, purchased 06/28/96, 
5.551%, maturing 07/01/96 (Cost 
$5,849,000)(b)                                 $5,851,706        5,849,000 
 --------------------------------------------------------------------------- 
TOTAL INVESTMENTS 
(COST--$225,357,258)                                           252,159,162 
 --------------------------------------------------------------------------- 
OTHER ASSETS AND LIABILITIES (0.5%)                              1,243,063 
 --------------------------------------------------------------------------- 
NET ASSETS (100%)                                             $253,402,225 
 --------------------------------------------------------------------------- 

</TABLE>
(a) Non-income-producing security. 
(b) The repurchase agreements are fully collateralized by U.S. government 
    and/or agency obligations based on market prices at June 30, 1996. 

See Notes to Financial Statements. 

<PAGE>
 
PAGE 10 
- ------------------------------------------------
Keystone Omega Fund 

FINANCIAL HIGHLIGHTS--CLASS A SHARES 
(For a share outstanding throughout each period) 

<TABLE>
<CAPTION>
                                                Six Months 
                                                   Ended                    Year Ended December 31, 
                                                 June 30,        ----------------------------------------------- 
                                                   1996          1995      1994      1993     1992(b)     1991 
- -------------------------------------------     ------------    -------    ------    ------    ------   --------
                                                (Unaudited) 
<S>                                             <C>           <C>        <C>       <C>       <C>        <C>
Net asset value beginning of period              $  19.56     $  15.54   $ 17.11   $ 15.84   $ 17.68    $ 13.37 
- ---------------------------------------------------------------------------------------------------------------- 
Income from investment operations: 
Net investment income (loss)                        (0.05)        0.00      0.04     (0.07)     0.00      (0.04) 
Net realized and unrealized gains (losses) 
on investments                                       0.70         5.58     (1.00)     3.07      0.39       6.92 
- ---------------------------------------------------------------------------------------------------------------- 
Total from investment operations                     0.65         5.58     (0.96)     3.00      0.39       6.88 
- ---------------------------------------------------------------------------------------------------------------- 
Less distributions from: 
Net investment income                                0.00         0.00      0.00      0.00      0.00      (0.02) 
In excess of net investment income                   0.00         0.00      0.00      0.00      0.00      (0.05) 
Capital gains                                       (1.78)       (1.56)    (0.61)    (1.73)    (2.23)     (2.50) 
- ---------------------------------------------------------------------------------------------------------------- 
Total distributions                                 (1.78)       (1.56)    (0.61)    (1.73)    (2.23)     (2.57) 
- ---------------------------------------------------------------------------------------------------------------- 
Net asset value end of period                    $  18.43     $  19.56   $ 15.54   $ 17.11   $ 15.84    $ 17.68 
- ---------------------------------------------------------------------------------------------------------------- 
Total return (a)                                     3.24%       36.94%    (5.66%)   19.33%     4.00%     54.49% 
Ratios/supplemental data 
Ratios to average net assets: 
 Total expenses (c)                                  1.43%(d)     1.38%     1.41%     1.51%     1.52%      1.57% 
 Net investment income (loss)                       (0.34%)(d)     0.00%    0.27%    (0.48%)   (0.01%)    (0.31%) 
Portfolio turnover rate                               112%         159%      137%      162%      176%       115% 
Average commission rate paid                     $ 0.0631         N/A       N/A       N/A       N/A        N/A 
- ---------------------------------------------------------------------------------------------------------------- 
Net assets end of period (thousands)             $152,744     $135,079   $99,569   $90,404   $73,144    $58,671 
- ---------------------------------------------------------------------------------------------------------------- 
</TABLE>
(a) Excluding applicable sales charges. 
(b) Calculated on average shares outstanding 
(c) "Ratio of total expenses to average net assets" for the six months ended 
    June 30, 1996 and the year ended December 31, 1995 includes indirectly 
    paid expenses. Excluding indirectly paid expenses, the expense ratio 
    would have been 1.42% and 1.37%, respectively. 
(d) Annualized. 

See Notes to Financial Statements. 

<PAGE>
 
PAGE 11 
- ------------------------------------------------
FINANCIAL HIGHLIGHTS--CLASS B SHARES 
(For a share outstanding throughout each period) 

<TABLE>
<CAPTION>
                                                                                                August 2, 1993 
                                                                                               (Date of Initial 
                                                            Six Months         Year Ended       Public Offering) 
                                                               Ended          December 31,            to 
                                                             June 30,       ----------------     December 31, 
                                                               1996         1995      1994           1993 
- -------------------------------------------------------     ------------    ------    ------   ---------------- 
                                                            (Unaudited) 
<S>                                                         <C>           <C>       <C>        <C>
Net asset value beginning of period                           $ 19.10     $ 15.34   $ 17.06        $  17.29 
- ---------------------------------------------------------------------------------------------------------------- 
Income from investment operations: 
Net investment loss                                             (0.08)      (0.09)    (0.06)          (0.05) 
Net realized and unrealized gains (losses) on 
investments                                                      0.63        5.41     (1.05)           1.55 
- ---------------------------------------------------------------------------------------------------------------- 
Total from investment operations                                 0.55        5.32     (1.11)           1.50 
- ---------------------------------------------------------------------------------------------------------------- 
Less distributions from: 
Capital gains                                                   (1.78)      (1.56)    (0.61)          (1.73) 
- ---------------------------------------------------------------------------------------------------------------- 
Total distributions                                             (1.78)      (1.56)    (0.61)          (1.73) 
- ---------------------------------------------------------------------------------------------------------------- 
Net asset value end of period                                 $ 17.87     $ 19.10   $ 15.34        $  17.06 
- ---------------------------------------------------------------------------------------------------------------- 
Total return (a)                                                 2.78%      37.50%    (6.57%)          9.02% 
Ratios/supplemental data 
Ratios to average net assets: 
 Total expenses (b)                                              2.30%(c)    2.29%     2.30%           2.57%(c) 
 Net investment loss                                            (1.20%)(c)  (0.94%)   (0.58%)         (1.73%)(c) 
Portfolio turnover rate                                           112%        159%      137%            162% 
Average commission rate paid                                  $0.0631        N/A       N/A             N/A 
- ---------------------------------------------------------------------------------------------------------------- 
Net assets end of period (thousands)                          $82,651     $71,636   $32,266        $  7,423 
- ---------------------------------------------------------------------------------------------------------------- 
</TABLE>
(a) Excluding applicable sales charge. 
(b) "Ratio of total expenses to average net assets" for the six months ended 
    June 30, 1996 and the year ended December 31, 1995 includes indirectly 
    paid expenses. Excluding indirectly paid expenses, the expense ratio 
    would have been 2.28% and 2.27%, respectively. 
(c) Annualized. 

See Notes to Financial Statements. 

<PAGE>
 
PAGE 12 
- ------------------------------------------------
Keystone Omega Fund 

FINANCIAL HIGHLIGHTS--CLASS C SHARES 
(For a share outstanding throughout each period) 

<TABLE>
<CAPTION>
                                                                                                August 2, 1993 
                                                                                               (Date of Initial 
                                                            Six Months        Year Ended        Public Offering) 
                                                               Ended         December 31,             to 
                                                             June 30,       --------------       December 31, 
                                                               1996         1995      1994           1993 
- -------------------------------------------------------     ------------    ------    ------   ---------------- 
                                                            (Unaudited) 
<S>                                                         <C>           <C>        <C>       <C>
Net asset value beginning of period                           $ 19.13     $ 15.37    $17.09        $  17.29 
- ---------------------------------------------------------------------------------------------------------------- 
Income from investment operations: 
Net investment loss                                             (0.05)      (0.13)    (0.07)          (0.06) 
Net realized and unrealized gains (losses) on 
investments                                                      0.60        5.45     (1.04)           1.59 
- ---------------------------------------------------------------------------------------------------------------- 
Total from investment operations                                 0.55        5.32     (1.11)           1.53 
- ---------------------------------------------------------------------------------------------------------------- 
Less distributions from: 
Capital gains                                                   (1.78)      (1.56)    (0.61)          (1.73) 
- ---------------------------------------------------------------------------------------------------------------- 
Total distributions                                             (1.78)      (1.56)    (0.61)          (1.73) 
- ---------------------------------------------------------------------------------------------------------------- 
Net asset value end of period                                 $ 17.90     $ 19.13    $15.37        $  17.09 
- ---------------------------------------------------------------------------------------------------------------- 
Total return (a)                                                 2.77%      35.62%    (6.56%)          9.20% 
Ratios/supplemental data 
Ratios to average net assets: 
 Total expenses (b)                                              2.30%(c)    2.30%     2.30%           2.48%(c) 
 Net investment loss                                            (1.20%)(c)   (0.91%)  (0.63%)         (1.64%) (c) 
Portfolio turnover rate                                           112%        159%      137%            162% 
Average commission rate paid                                  $0.0631        N/A       N/A             N/A 
- ---------------------------------------------------------------------------------------------------------------- 
Net assets end of period (thousands)                          $18,008     $13,963    $9,900        $  3,620 
- ---------------------------------------------------------------------------------------------------------------- 
</TABLE>
(a) Excluding applicable sales charges. 

(b) "Ratio of total expenses to average net assets" for the six months ended 
    June 30, 1996 and the year ended December 31, 1995 includes indirectly 
    paid expenses. Excluding indirectly paid expenses, the expense ratio 
    would have been 2.28% and 2.29%, respectively. 

(c) Annualized. 

See Notes to Financial Statements. 

<PAGE>
 
PAGE 13 
- ------------------------------------------------
STATEMENT OF ASSETS AND LIABILITIES 
June 30, 1996 (Unaudited) 
<TABLE>
<CAPTION>
 -------------------------------------------------------------------- 
 Assets: 
<S>                                                     <C>
 Investments at market value (identified 
 cost--$225,357,258) (Note 1)                           $252,159,162 
 Cash                                                            553 
 Receivable for: 
  Fund shares sold                                           307,345 
  Investments sold                                         1,508,386 
  Dividends and interest                                      84,487 
 Foreign tax receivable                                        1,548 
 Prepaid expenses and other assets                            46,054 
 -------------------------------------------------------------------- 
  Total assets                                           254,107,535 
 -------------------------------------------------------------------- 
Liabilities: 
 Payable for: 
  Investments purchased                                      547,715 
  Fund shares redeemed                                        77,890 
 Foreign taxes withheld                                        4,643 
 Other liabilities                                            75,062 
 -------------------------------------------------------------------- 
  Total liabilities                                          705,310 
 -------------------------------------------------------------------- 
Net assets                                              $253,402,225 
 -------------------------------------------------------------------- 
Net assets represented by: (Notes 1 and 3) 
 Paid-in-capital                                        $217,170,190 
 Accumulated distributions in excess of net 
investment  income                                          (802,670) 
 Accumulated net realized gain (loss) on investment 
 transactions                                             10,232,801 
 Net unrealized appreciation (depreciation) on 
 investments                                              26,801,904 
 -------------------------------------------------------------------- 
  Total net assets                                      $253,402,225 
 -------------------------------------------------------------------- 
Net asset value per share: (Notes 1 and 2) 
 Class A Shares 
  Net assets of $152,743,839 / 8,286,847 shares 
  outstanding                                           $      18.43 
  Offering price per share ($18.43 / 0.9425) (based 
  on sales charge of 5.75% of the offering price at 
  June 30, 1996)                                        $      19.55 
 Class B Shares 
  Net assets of $82,650,824 / 4,624,132 shares 
  outstanding                                           $      17.87 
 Class C Shares 
  Net assets of $18,007,562 / 1,005,821 shares 
  outstanding                                           $      17.90 
 -------------------------------------------------------------------- 
</TABLE>
STATEMENT OF OPERATIONS 
Six Months Ended June 30, 1996 (Unaudited) 

<TABLE>
<CAPTION>
 -------------------------------------------------------------------- 
 Investment income: (Note 1) 
<S>                                    <C>           <C>
Dividends (net of foreign 
 withholding tax of $6,966)                          $    862,834 
Interest                                                  405,814 
 -------------------------------------------------------------------- 
 Total income                                           1,268,648 
 -------------------------------------------------------------------- 
Expenses: (Notes 2, 4, and 5) 
Management fee                         $  874,940 
Shareholder services                      337,853 
Accounting                                 17,658 
Auditing and legal                         24,513 
Custodian fees                             95,718 
Printing                                   39,423 
Trustees' fees and expenses                 5,564 
Distribution Plan expenses                561,413 
Registration fees                          98,459 
Prepaid expense                            23,745 
Miscellaneous expenses                     12,160 
 -------------------------------------------------------------------- 
 Total expenses                         2,091,446 
 Less: Expenses paid indirectly 
  (Note 4)                                (20,128) 
 -------------------------------------------------------------------- 
 Net expenses                                           2,071,318 
 -------------------------------------------------------------------- 
Net investment loss                                      (802,670) 
 -------------------------------------------------------------------- 
Net realized and unrealized gain 
(loss)  on investments: (Notes 1 and 3) 
Net realized gain on investments                       26,808,908 
 -------------------------------------------------------------------- 
Net change in unrealized 
 appreciation (depreciation) on 
 investments                                          (11,580,357) 
 -------------------------------------------------------------------- 
Net gain on investments                                15,228,551 
 -------------------------------------------------------------------- 
Net increase in net assets resulting 
 from operations                                     $ 14,425,881 
====================================================================== 
</TABLE>

See Notes to Financial Statements. 

<PAGE>
 
PAGE 14 
- ------------------------------------------------
Keystone Omega Fund 

<TABLE>
<CAPTION>
STATEMENTS OF CHANGES IN NET ASSETS                                     Six Months 
                                                                           Ended          Year Ended 
                                                                         June 30,        December 31, 
                                                                           1996              1995 
===================================================================     ============   ================ 
                                                                        (Unaudited) 
<S>                                                                    <C>             <C>
Operations: 
Net investment loss                                                   ($    802,670)    ($    548,862) 
Net realized gain on investments                                         26,808,908        24,020,841 
Net change in unrealized appreciation (depreciation) on investments     (11,580,357)       30,134,778 
- -------------------------------------------------------------------------------------------------------- 
 Net increase in net assets resulting from operations                    14,425,881        53,606,757 
- -------------------------------------------------------------------------------------------------------- 
Distributions to shareholders from: (Notes 1 and 5) 
Net realized gain on investment transactions: 
 Class A Shares                                                         (12,256,195)       (9,531,332) 
 Class B Shares                                                          (7,395,517)       (4,676,811) 
 Class C Shares                                                          (1,549,997)         (973,850) 
- -------------------------------------------------------------------------------------------------------- 
 Total distributions to shareholders                                    (21,201,709)      (15,181,993) 
- -------------------------------------------------------------------------------------------------------- 
Capital share transactions: (Note 2) 
Proceeds from shares sold: 
 Class A Shares                                                          33,073,648        21,425,010 
 Class B Shares                                                          18,552,008        33,563,718 
 Class C Shares                                                           5,561,980         4,723,834 
Payments for shares redeemed: 
 Class A Shares                                                         (26,259,614)      (20,370,219) 
 Class B Shares                                                          (9,274,476)       (8,682,058) 
 Class C Shares                                                          (1,834,171)       (4,086,346) 
Net asset value of shares issued in reinvestment of distributions: 
 Class A Shares                                                          11,299,273         8,685,153 
 Class B Shares                                                           6,954,768         4,332,038 
 Class C Shares                                                           1,426,247           927,300 
- -------------------------------------------------------------------------------------------------------- 
 Net increase in net assets resulting from capital share 
transactions                                                             39,499,663        40,518,430 
- -------------------------------------------------------------------------------------------------------- 
  Total increase in net assets                                           32,723,835        78,943,194 
Net assets: 
Beginning of period                                                     220,678,390       141,735,196 
- -------------------------------------------------------------------------------------------------------- 
End of period [including accumulated distributions in excess of net 
investment income of ($802,670)--1996 and $0--1995]                    $253,402,225      $220,678,390 
======================================================================================================== 
</TABLE>
See Notes to Financial Statements. 

<PAGE>
 
PAGE 15 
- ------------------------------------------------

NOTES TO FINANCIAL STATEMENTS 
(Unaudited) 

(1.) Significant Accounting Policies 

Keystone Omega Fund (the "Fund") is registered under the Investment Company 
Act of 1940, ("1940 Act"), as a diversified open-end management investment 
company. The Fund was incorporated in Massachusetts on February 8, 1968. 
Keystone Management, Inc. ("KMI") is the Fund's Investment Adviser. The Fund 
seeks maximum capital growth by investing in a varied portfolio consisting 
primarily of common stocks and securities convertible into common stocks. 

  Keystone is a wholly-owned subsidiary of Keystone Investments, Inc. ("KII"), 
a Delaware corporation. KII is a private corporation predominately owned by 
current and former members of management of Keystone. Keystone Investor 
Resource Center, Inc. ("KIRC"), a wholly-owned subsidiary of Keystone, is the 
Fund's transfer and dividend disbursing agent. 

  The Fund issues Class A, B and C shares. Class A shares are sold subject to 
a maximum sales charge of 5.75% payable at the time of purchase. Class B 
shares are sold subject to a contingent deferred sales charge that varies 
depending on when the shares were purchased and how long the shares have been 
held. Class C shares are sold subject to a contingent deferred sales charge 
payable upon redemption within one year after purchase. Class C shares are 
available only through dealers who have entered into special distribution 
agreements with Keystone Investment Distributors Company ("KIDCO"), the 
Fund's principal underwriter. KIDCO is a wholly-owned subsidiary of 
Keystone. 

  The following is a summary of significant accounting policies consistently 
followed by the Fund in the preparation of its financial statements. The 
policies are in conformity with generally accepted accounting principles, 
which requires management to make estimates and assumptions that affect 
amounts reported herein. Although actual results could differ from these 
estimates, any such differences are expected to be immaterial to the net 
assets for the Fund. 

A. Investments, including American Depository Receipts ("ADRs"), are usually 
valued at the closing sales price, or in the absence of sales and for 
over-the-counter securities, the mean of bid and asked quotations. Management 
values the following securities at prices it deems in good faith to be fair, 
by or under the direction of the Board of Trustees: (a) securities (including 
restricted securities) for which complete quotations are not readily 
available and (b) listed securities if, in the opinion of management, the 
last sales price does not reflect a current value, or if no sale occurred. 
ADRs, which are certificates representing shares of foreign securities 
deposited in domestic and foreign banks, are traded and valued in United 
States dollars. 

  Short-term investments, if purchased with maturities of sixty days or less, 
are valued at amortized cost (original purchase costs as adjusted for 
amortization of premium or accretion of discount) which, when combined with 
accrued interest, approximates market. Short-term investments maturing in 
more than sixty days for which market quotations are readily available are 
valued at current market value. Short-term investments maturing in more than 
sixty days, which are held on the sixtieth day prior to maturity, are valued 
at amortized cost (market value on the sixtieth day adjusted for amortization 
of premium or accretion of discount) which, when combined with accrued 
interest, approximates market. 

B. Securities transactions are accounted for on the day after the trade date. 
Realized gains and losses are computed on the identified cost basis. Interest 
income is recorded on the accrual basis and dividend income is recorded on 
the ex-dividend date. Distributions to the shareholders are recorded by the 
Fund at the close of business on the ex-dividend date. 

<PAGE>
 
PAGE 16 
- ------------------------------------------------
Keystone Omega Fund 

C. The Fund has qualified, and intends to qualify in the future, as a 
regulated investment company (a "RIC") under the Internal Revenue Code of 
1986, as amended ("Internal Revenue Code"). Thus, the Fund is relieved of any 
federal income or excise tax liability by distributing all of its net taxable 
investment income and net taxable capital gains, if any, to its shareholders. 
The Fund intends to avoid any excise tax liability by making the required 
distributions under the Internal Revenue Code. 

D. When the Fund enters into a repurchase agreement (a purchase of securities 
whereby the seller agrees to repurchase the securities at a mutually agreed 
upon date and price) the repurchase price of the securities will generally 
equal the amount paid by the Fund plus a negotiated interest amount. The 
seller under the repurchase agreement will be required to provide securities 
("collateral") to the Fund. The value of which will be maintained at an 
amount not less than the repurchase price, and which generally will be 
maintained at 101% of the repurchase price. The Fund monitors the value of 
the collateral on a daily basis. If the value of the collateral falls below 
required levels, the Fund intends to seek additional collateral from the 
seller or terminate the repurchase agreement. If the seller defaults, the 
Fund would suffer a loss to the extent that the proceeds from the sale of the 
underlying securities were less than the repurchase price. Any such loss 
would be increased by any cost incurred on disposing of such securities. If 
bankruptcy proceedings are commenced against the seller under the repurchase 
agreement, the realization on the collateral may be delayed or limited. 
Repurchase agreements entered into by the Fund will be limited to 
transactions with dealers or domestic banks believed to present minimal 
credit risks, and the Fund will take constructive receipt of all securities 
underlying repurchase agreements until such agreements expire. 

  Pursuant to an exemptive order issued by the Securities and Exchange 
Commission, the Fund, along with certain other Keystone funds, may transfer 
uninvested cash balances into a joint trading account. These balances are 
invested in one or more repurchase agreements that are fully collateralized 
by U.S. Treasury and/or Federal Agency obligations. 

E. In connection with portfolio purchases and sales of securities denominated 
in foreign currency, the Fund may enter into forward foreign currency 
exchange contracts. Such contracts are recorded at market value. Realized 
gains and losses arising from such transactions are included in net realized 
gain (loss) on foreign currency related transactions. The Fund is subject to 
the credit risk that the other party will not complete the obligations of the 
contract. 

F. The Fund distributes to shareholders net investment income and net capital 
gains, if any, annually. Distributions are determined in accordance with 
income tax regulations. Distributions from taxable net investment income and 
net capital gains can differ from book basis net investment income and net 
capital gains. The significant differences between financial statement 
amounts available for distribution and distributions made in accordance with 
income tax regulations, are due to the differing treatment of net operating 
losses and short-term capital gains for financial statement and federal 
income tax purposes. 

(2.) Capital Share Transactions 

The Fund's Declaration of Trust authorizes the issuance of an unlimited 
number of shares of beneficial 

<PAGE>
 
PAGE 17 
- ------------------------------------------------

interest without par value. Transactions in shares of the Fund were as 
follows: 
<TABLE>
<CAPTION>
                            Class A Shares 
                   -------------------------------- 
                    Six Months 
                       Ended          Year Ended 
                     June 30,        December 31, 
                       1996              1995 
=================================================== 
<S>                 <C>               <C>
Shares sold          2,147,730         1,178,460 
Shares redeemed     (1,376,015)       (1,161,391) 
Shares issued 
in reinvestment 
of distributions       607,488           482,356 
- ---------------------------------------------------- 
Net increase         1,379,203           499,425 
==================================================== 
</TABLE>

<TABLE>
<CAPTION>
                            Class B Shares 
                   -------------------------------- 
                    Six Months 
                       Ended          Year Ended 
                     June 30,        December 31, 
                       1996              1995 
=================================================== 
<S>                  <C>              <C>
Shares sold           985,123         1,902,255 
Shares redeemed      (496,921)         (499,966) 
Shares issued 
in reinvestment 
of distributions      384,879           245,291 
- --------------------------------------------------- 
Net increase          873,081         1,647,580 
=================================================== 
</TABLE>

<TABLE>
<CAPTION>
                            Class C Shares 
                   -------------------------------- 
                    Six Months 
                       Ended          Year Ended 
                     June 30,        December 31, 
                       1996              1995 
=================================================== 
<S>                   <C>              <C>
Shares sold           294,931           273,387 
Shares redeemed       (97,981)         (240,110) 
Shares issued 
in reinvestment 
of distributions       78,798            52,465 
- --------------------------------------------------- 
Net increase          275,748            85,742 
=================================================== 
</TABLE>
  The Fund bears some of the costs of selling its shares under Distribution 
Plans adopted with respect to its Class A, Class B, and Class C shares 
pursuant to Rule 12b-1 under the 1940 Act. Under its Distribution Plans, the 
Fund pays KIDCO, amounts which in total may not exceed each Distribution 
Plan's maximum. 

  The Class A Distribution Plan provides for payments which are currently 
limited to 0.25% annually of the average daily net asset value of Class A 
shares, to pay expenses of the distribution of Class A shares. Amounts paid 
by the Fund to KIDCO under the Class A Distribution Plan are currently used 
to pay others, such as broker-dealers, service fees at an annual rate of up 
to 0.25% of the average daily net asset value of Class A maintained by such 
recipients and outstanding on the books for specified periods. 

  The Fund's Class B Distribution Plans each provides for expenditures at an 
annual rate of up to 1.00% of the average daily net asset value of Class B 
shares to pay expenses related to the distribution of Class B shares. Amounts 
paid by the Fund under the Class B Distribution Plans are currently used to 
pay others (brokers-dealers) a commission at the time of purchase normally 
equal to 4.00% of the price paid for each Class B share sold plus the first 
year's service fee in advance in the amount of 0.25% of the price paid for 
each Class B share sold. Beginning approximately 12 months after the purchase 
of a Class B share, the broker-dealer or other party will receive service 
fees at an annual rate of 0.25% of the average daily net asset value of such 
Class B shares maintained by such others on the Fund's books for specified 
periods. A contingent deferred sales charge will be imposed, if applicable, 
on Class B shares purchased on or after June 1, 1995 at rates ranging from a 
maximum of 5.00% of amounts redeemed during the first twelve months from and 
including the month of purchase to 1.00% of amounts redeemed during the sixth 
twelve-month period. Class B shares purchased on or 

<PAGE>
 
PAGE 18 
- ------------------------------------------------
Keystone Omega Fund 

after June 1, 1995 that have been outstanding for eight years from and 
including the month of purchase will automatically convert to Class A shares 
without a front end sales charge or exchange fee. Class B shares purchased 
prior to June 1, 1995 will retain their existing conversion rights. 

  The Class C Distribution Plan provides for expenditures at an annual rate of 
up to 1.00% of the average daily net asset value of Class C shares, to pay 
expenses for the distribution of Class C shares. Amounts paid by the Fund 
under the Class C Distribution Plan are currently used to pay others 
(broker-dealers) a commission at the time of purchase in the amount of 0.75% 
of the price paid for each Class C share sold, plus the first year's service 
fee in advance in the amount of 0.25% of the price paid for each Class C 
share. Beginning approximately 15 months after purchase, the broker-dealer or 
other party will receive a commission at an annual rate of 0.75% (subject to 
applicable limitations imposed by the National Association of Securities 
Dealers, Inc.) ("NASD") and service fees at the annual rate of 0.25%, 
respectively, of the average net asset value of each Class C share maintained 
by such others and on the books for specified periods. 

  Each of the Distribution Plans may be terminated at any time by a vote of 
(i) the Independent Trustees or (ii) the outstanding voting shares of the 
respective class. If a Distribution Plan is terminated, KIDCO may, at the 
discretion of the Board of Trustees, continue as compensation for its 
services which had been earned at any time the Distribution Plan was in 
effect. 

  KIDCO intends, but is not obligated, to continue to pay or accrue 
distribution costs and service fees which exceed the annual maximum payments 
permitted to be received by KIDCO from the Fund. KIDCO intends to seek full 
payment of such amounts from the Fund (together with annual interest thereon 
at the prime rate plus 1.0%) at such time in the future as, and to the extent 
that, payment thereof by the Fund would be within permitted limits. 

  During the six-month period ended June 30, 1996, the Fund paid KIDCO $91,650 
pursuant to its Class A Distribution Plan; $249,978 for Class B shares sold 
prior to June 1, 1995, and $139,072 for Class B shares sold on or after June 
1, 1995 under its Class B Distribution Plans; and $80,713 under its Class C 
Distribution Plan. 

  Under the NASD Rule, as of June 30, 1996 the maximum uncollected amounts for 
which KIDCO may seek payment from the Fund under its Class B Distribution 
Plans were $2,309,049 for Class B shares purchased prior to June 1, 1995 and 
$1,912,435 for Class B shares purchased on or after June 1, 1995; and 
$1,117,276 under its Class C Distribution Plan. 

  Presently, the Fund's class-specific expenses are limited to Distribution 
Plan expenses incurred by a class of shares. 

  (3.) Securities Transactions 

  Cost of purchases and proceeds from sales of investment securities 
(excluding short-term securities), during the six month period ended June 30, 
1996 were $265,607,157 and $248,855,320, respectively. 

  (4.) Investment Management and Transactions with Affiliates 

  Under the terms of the Investment Management Agreement between KMI and the 
Fund, KMI provides investment management and administrative services to the 
Fund. In return, KMI was paid a management fee computed and paid daily. The 
management fee is determined by applying percentage rates, which starting at 
0.75% and declining as net assets increase, to 0.50% per annum, to the net 
asset value of the Fund. 

<PAGE>
 
PAGE 19 
- ------------------------------------------------

  Pursuant to the Investment Management Agreement, KMI has entered into an 
Investment Advisory Agreement with Keystone, under which Keystone provides 
investment advisory and management services to the Fund. For its services, 
Keystone receives an annual fee representing 85% of the management fee 
received by KMI. For the six month period ended June 30, 1996 the Fund paid 
or accrued to KMI investment management and administrative service fees of 
$874,940, which represent 0.75% of the Fund's average net assets. Of such 
amounts paid to KMI $743,699 was paid to Keystone for its services to the 
Fund. 

  For the six month period ended June 30, 1996, the Fund paid or accrued to 
KII $57,081 as reimbursement for certain accounting and printing services, 
and $337,853 to KIRC for shareholder services. 

  The Fund is subject to certain state annual expense limits, the most 
restrictive of which is as follows: 2.5% of the first $30 million of the fund 
average net assets; 2.0% of the next $70 million of fund average net assets; 
and 1.5% of fund average net assets over $100 million. 

  Keystone has agreed to reimburse the Fund annually for certain operating 
expenses incurred by the Fund in excess of the applicable state expense 
limit. However, Keystone is not required to make such reimbursement to an 
extent which would result in the Fund's inability to qualify as a regulated 
investment company under provisions of the Internal Revenue Code. 

  The Fund has entered into an expense offset arrangement with its custodian. 
For the six month period ended June 30, 1996, the Fund paid or incurred 
custody fees in the amount of $95,718 and received a credit of $20,128 
pursuant to the expense offset arrangement, resulting in a net custody 
expense of $75,590. The assets deposited with the custodian under the expense 
offset arrangement could have been invested in income-producing assets. 

  Certain officers and/or Directors of Keystone are also officers and/or 
Trustees of the Fund. Officers of Keystone and affiliated Trustees receive no 
compensation directly from the Fund. 

  (5.) Distributions to Shareholders 

  Any taxable distribution which is declared in December and paid in the 
following fiscal year will be taxable to shareholders in the year declared. 

<PAGE>
                                  [BACK COVER]

                                KEYSTONE AMERICA
                                FAMILY OF FUNDS

                                   [diamond]

                                Balanced Fund II
                      Capital Preservation and Income Fund
                           Government Securities Fund
                          Intermediate Term Bond Fund
                             Strategic Income Fund
                                World Bond Fund
                              Tax Free Income Fund
                        California Insured Tax Free Fund
                             Florida Tax Free Fund
                          Massachusetts Tax Free Fund
                             Missouri Tax Free Fund
                         New York Insured Tax Free Fund
                           Pennsylvania Tax Free Fund
                             Fund for Total Return
                           Global Opportunities Fund
                      Hartwell Emerging Growth Fund, Inc.
                                   Omega Fund
                              Fund of the Americas
                           Strategic Development Fund

This report was prepared primarily for the information of the Fund's
shareholders. It is authorized for distribution if preceded or accompanied by
the Fund's current prospectus. The prospectus contains important information
about the Fund including fees and expenses. Read it carefully before you invest
or send money. For a free prospectus on other Keystone funds, contact your
financial adviser or call Keystone.


[LOGO]  KEYSTONE
        INVESTMENTS

        P.O. Box 2121
        Boston, Massachusetts 02106-2121


OFI-R-8/96
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