MAS FUNDS /MA/
N-30D, 2000-02-25
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<PAGE>   1




1999
Annual
Report


[PHOTO]



                                Morgan Stanley Dean Witter Investment Management
                                                 Miller Anderson & Sherrerd, LLP



                                                                [MAS FUNDS LOGO]
<PAGE>   2

Miller Anderson & Sherrerd, LLP            Morgan Stanley Dean Witter Investment
                                                                      Management





MISSION STATEMENT

We strive to meet or exceed clients' long-term investment objectives by
providing a comprehensive array of investment services, characterized by
enduring client relationships and superior investment results.

In pursuing this mission we:

- -   Listen attentively to our clients

- -   Communicate clearly and concisely how well our investment strategies and
    results are fulfilling our clients' investment objectives

- -   Manage the growth of the firm to preserve and enhance the quality of our
    investment services

- -   Invest continuously in people and technology to remain at the intellectual
    and technological forefront of our industry

- -   Maintain a culture and work environment that promote teamwork and enable us
    to attract and retain the highest caliber of people and to foster their
    growth and satisfaction

- -   Uphold the highest standards of ethics and integrity

We measure our success through our enduring client relationships and long-term
investment results.



                                                                               1

<PAGE>   3


Miller Anderson & Sherrerd, LLP            Morgan Stanley Dean Witter Investment
                                                                      Management



CONTENTS

CHAIRMAN'S LETTER................4

PORTFOLIO COMMENTARY AND INVESTMENT RESULTS

  EQUITY

    6  Value Portfolio
    8  Equity Portfolio
   10  Small Cap Value Portfolio
   12  Mid Cap Growth Portfolio
   14  Mid Cap Value Portfolio
   16  Small Cap Growth Portfolio


  FIXED INCOME

   18  Fixed Income Portfolio
   20  Domestic Fixed Income Portfolio
   22  High Yield Portfolio
   24  Cash Reserves Portfolio
   26  Fixed Income II Portfolio
   28  Limited Duration Portfolio
   30  Special Purpose Fixed Income Portfolio
   32  Municipal Portfolio
   34  Global Fixed Income Portfolio
   36  International Fixed Income Portfolio
   38  Intermediate Duration Portfolio
   40  Multi-Market Fixed Income Portfolio

  BALANCED

   42  Balanced Portfolio
   44  Multi-Asset-Class Portfolio

  TRUSTEES AND OFFICERS........ 47




                                                                               3
<PAGE>   4


Miller Anderson & Sherrerd, LLP


CHAIRMAN'S LETTER

"WE USE PROVEN STRATEGIES THAT HAVE BEEN VALIDATED THROUGH HISTORICAL RESEARCH
AND ANALYSIS, PROVIDING THE CONSISTENCY IN INVESTMENT APPROACH THAT
INSTITUTIONAL INVESTORS SEEK."


[PHOTO]


Thomas L. Bennett,
Chairman



DEAR FELLOW SHAREHOLDERS,

1999 is a special year for MAS Funds and the Fund's adviser, Miller Anderson &
Sherrerd, LLP. This year marks the 30th anniversary of the launch of the first
MAS strategy. In addition, we celebrate the 15th year of existence for our three
flagship MAS Funds Portfolios: Value, Equity, and Fixed Income.

    We are very proud to have reached these milestones through adherence to
prudent, valuation-driven investment decision-making and dedication to superior
client service. From the beginning, we have stressed the importance of a
long-term, disciplined approach to investing. We use proven strategies that have
been validated through historical research and analysis, providing the
consistency in investment approach that institutional investors seek.

    Remaining disciplined does not, however, imply that we never make changes.
We are dedicated above all else to serving the best interests of our
shareholders, and that means having the willingness to look for areas of
improvement. A good example would be our Equity Portfolio. As many of our
shareholders are aware, we initiated significant changes about two years ago in
the way we execute the Portfolio's investment strategy. While we continue our
efforts to enhance the management of this portfolio, the Portfolio's superior
performance versus the S&P 500 over the past 12 months makes us feel very
positive about our progress thus far.

    During the past year, we also decided to close four of the MAS Funds
portfolios. These decisions were not made lightly--we ultimately concluded that
we would better serve our entire shareholder base by reallocating our resources
and taking advantage of our close relationship with the Morgan Stanley Dean
Witter Institutional Funds. For example, as a result of closing the
International Equity and Emerging Markets Value Portfolios, the realignment of
investment teams allowed MAS Funds investors to benefit from an expanded, global
asset allocation team, while enjoying access to premier international investing
services.

    Through the Fund's affiliation with Morgan Stanley Dean Witter Investment
Management, we are now able to offer our clients an even broader array of



4

<PAGE>   5

                                Morgan Stanley Dean Witter Investment Management

high quality investment products and services. In doing so, we have endeavored
to preserve the excellent standing of the MAS Funds portfolios. As shown in the
table below, a high percentage of the MAS Funds portfolios rated by Morningstar
continues to be awarded "Four- and Five-Star Ratings" based on their long-term
track record--76% versus 74% two years ago.

    MAS Funds remains committed to the ideals of time-tested, disciplined
investing and individualized, attentive service to clients. Our dedication to
these principles will not waver, and we will continue to look for the best ways
to serve our shareholders. As always, please call your client service contact
with any questions regarding this report or the MAS Funds portfolios.

    Sincerely,

    /s/ THOMAS L. BENNETT
    Thomas L. Bennett
    Chairman







"THROUGH THE FUND'S AFFILIATION WITH MORGAN STANLEY DEAN WITTER INVESTMENT
MANAGEMENT, WE ARE NOW ABLE TO OFFER OUR CLIENTS AN EVEN BROADER ARRAY OF HIGH
QUALITY INVESTMENT PRODUCTS AND SERVICES."


<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------------------------------------
MORNINGSTAR RATINGS FOR MAS FUNDS* For the periods ending September 30, 1997 and September 30, 1999
- -------------------------------------------------------------------------------------------------------------

                                        Number of Funds         Number of Funds             Number of Funds
                                     Rated by Morningstar         Rated 4 Star                Rated 5 Star
- -------------------------------------------------------------------------------------------------------------
                                      9/30/1997  9/30/1999     9/30/1997  9/30/1999      9/30/1997  9/30/1999
- -------------------------------------------------------------------------------------------------------------
<S>                                  <C>          <C>          <C>        <C>            <C>        <C>
Equity Portfolios                         4          5             1         2              2          2
- -------------------------------------------------------------------------------------------------------------
International Equity Portfolios           1         --            --        --             --         --
- -------------------------------------------------------------------------------------------------------------
Fixed-Income Portfolios                  10          8             7         4              3          4
- -------------------------------------------------------------------------------------------------------------
International Fixed-Income Portfolios     2          2            --        --             --         --
- -------------------------------------------------------------------------------------------------------------
Balanced Portfolios                       2          2             1         1             --         --
- -------------------------------------------------------------------------------------------------------------
Total                                    19         17             9         7              5          6
</TABLE>


*Morningstar, Inc. assigns ratings to investment companies based on the Firm's
proprietary star-based rating system. Under this system, Morningstar assigns a
fund anywhere from one to five stars based upon a combination of performance
(three-, five-, and ten-year time periods, when available) and risk, assessed
together to form a comprehensive evaluation. The top 10% of each class receives
five stars and funds falling in the next 22.5% receive four stars. A Morningstar
rating is not a predictor of future performance and does not guarantee that a
fund will perform at its past levels in the future.

Morningstar, Inc. currently rates seventeen of the twenty MAS Funds portfolios.
Morningstar, Inc. requires that a mutual fund be in existence for a minimum of
three years in order to be rated. Therefore, the Small Cap Growth and
Multi-Market Fixed Income Portfolios are not yet rated. In addition, the Cash
Reserves Portfolio is not rated, because Morningstar, Inc. does not rate money
market funds.



                                                                               5
<PAGE>   6

MAS Funds/Equity


VALUE PORTFOLIO

"THE PORTFOLIO'S P/E RATIO AT FISCAL YEAR-END WAS 11.2X, COMPARED TO 26.4X FOR
THE S&P 500."


THE VALUE PORTFOLIO combines Miller Anderson & Sherrerd's disciplined stock
valuation process with the judgment gained through considerable experience in
low P/E investing.

    MAS's process is executed in two stages. An initial screen identifies
companies with flat or positive earnings growth which have underperformed the
broad market averages, and whose valuations fall into the lower segment of MAS's
investment universe. In the second stage, fundamental analysis is used to
determine the cyclical sustainability of earnings and the competitive dynamics
of a company. This approach is fortified by attention to risk management. MAS
emphasizes portfolio diversification in terms of both sectors and stocks.
Maximum sector and position limitations are imposed, thereby minimizing the risk
of any individual sector or holding.

    MAS also utilizes a clearly defined, firmly enforced sell discipline. Many
value managers who are able to identify outstanding securities err by holding
successful investments past their peaks. Perhaps the greatest strategic
advantage of the MAS approach is that the sell discipline mandates the sale of
any stock that satisfies one or more of the three sell criteria--price
appreciation, earnings deterioration, or negative fundamental change.

    The past two years have been difficult for low P/E value investing, and this
difficult environment continued in the Portfolio's 1999 fiscal year. The total
return of the MAS Funds Value Portfolio was 8.3%, compared to 27.8% for the S&P
500.

    Early in the year, it appeared that the equity markets had become
increasingly "digital." The digital world reduces inputs to streams of 1s or 0s,
off or on, with no mention or measurement of degree. Investors seemed to have
reduced their opinions about companies and their stock prices to the same level
of simplicity. Internet, technology, and mega-cap growth stocks were switched
"on" in the equity markets. Valuations were deemed irrelevant in this new
digital investment world. Most other sectors of the market were deemed "off."
Conceptually unappealing sectors such as small- and mid-caps and economically
sensitive companies of every size were ignored, irrespective of fundamentals or
valuations.

    By contrast, the third fiscal quarter represented an excellent period for
the Portfolio and a welcome respite from earlier performance comparisons. The
Portfolio returned 15.3% for that quarter, compared to 7.1% for the S&P 500. The
most important aspect of this quarter was the market's significant rotation
towards a low P/E, value style of investing. For the first time in recent years,
the trend of mega-cap growth outperformance was broken. Generally, everything
that had suffered over the past eighteen months recovered: large stocks
outperformed mega-cap stocks, cyclical stocks outperformed defensive stocks,
value stocks outperformed growth stocks, and low P/E stocks outperformed high
P/E stocks.

    However, the brief outperformance of value stocks ended abruptly in the
fourth fiscal quarter of 1999. For the quarter, the Portfolio returned (16.0)%
versus (6.3)% for the S&P 500. Traditional performance attribution reveals that
stock selection contributed about 75% of the performance shortfall, and sector
allocation was responsible for the remainder. The sector allocation shortfall
was due to an underweighting in technology and overweightings in financial,
consumer durable, and transportation stocks. Stock selection in the health care,
technology, financial, heavy industry, and retail groups penalized relative
performance.

    Further analysis, however, reveals that the major reason for the significant
underperformance during the quarter was the Portfolio's strict adherence to a
low P/E investment discipline. From June through September, the low P/E
universe, as defined by the two lowest P/E quintiles of all stocks greater than
$2.5 billion in market capitalization, returned (14.1)%. This reversed the
positive momentum that value investing had established in the third fiscal
quarter. It also reestablished the primary trend of the past two years--a
situation in which mega-cap growth stocks with exceptionally high valuations
appreciated, while the vast majority of low valuation shares stagnated or
declined. Unquestionably, the average stock in the Portfolio's investible
universe experienced a severe bear market during the quarter.



6

<PAGE>   7


    Sector allocation in the Portfolio remained true to the low P/E investible
universe at the end of the fiscal year. Overweightings remained in the
financial, industrial, durable goods, transportation, and basic materials
sectors. During the year, larger commitments were made to the health care
services sector, and at fiscal year-end, this group also represented a
significant overweighting. MAS believed that this sector, under pressure from
reimbursement and legal concerns, represented exceptional value. Sector
underweightings remained in technology (which MAS believed was in an
Internet-led mania stage), consumer staples, telecommunications, and energy
stocks. In each of these sectors, valuations prevented the Portfolio from
participating without violating its low P/E discipline.

- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT OVER 10 YEARS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
Fiscal Years Ending        MAS
September 30            Funds Value    S&P 500
<S>                    <C>          <C>          <C>
89                      1000          1000           9/30/89
                         959          1021          12/31/89
                         929           990           3/31/90
                         957          1052           6/30/90
90                       801           908           9/30/90
                         900           989          12/31/90
                        1053          1133           3/31/91
                        1073          1130           6/30/91
91                      1166          1190           9/30/91
                        1239          1290          12/31/91
                        1240          1258           3/31/92
                        1269          1282           6/30/92
92                      1316          1322           9/30/92
                        1420          1389          12/31/92
                        1499          1449           3/31/93
`                       1508          1456           6/30/93
93                      1574          1494           9/30/93
                        1623          1528          12/31/93
                        1598          1471           3/31/94
                        1621          1477           6/30/94
94                      1692          1549           9/30/94
                        1680          1549          12/31/94
                        1860          1699           3/31/95
                        2078          1862           6/30/95
95                      2243          2010           9/30/95
                        2331          2131          12/31/95
                        2494          2245           3/31/96
                        2552          2346           6/30/96
96                      2656          2418           9/30/96
                        2975          2620          12/31/96
                        3024          2690           3/31/97
                        3466          3159           6/30/97
97                      3752          3396           9/30/97
                        3670          3494          12/31/97
                        4023          3981           3/31/98
                        3873          4112           6/30/98
98                      3136          3703           9/30/98
                        3564          4492          12/31/98
                        3505          4716           3/31/99
                        4041          5048           6/30/99
99                      3396          4733           9/30/99
</TABLE>


    Portfolio characteristics and global economic trends remained favorable for
low P/E, value-based investors. The Portfolio's P/E ratio at fiscal year-end was
11.2x, compared to 26.4x for the S&P 500. Price-to-cash flow and price-to-book
value ratios were also at substantial discounts to the benchmark, while the
Portfolio's dividend yield was 2.1%, compared to 1.3% for the index. Growth
rates and earnings estimate revisions for the Portfolio's holdings were at
slight discounts to the S&P 500, but well within traditional ranges. U.S.
economic activity was healthy, and global economic recovery continued. These
factors have historically been positive influences on relative price performance
for the Portfolio's low P/E investible universe.


- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                                          MAS Value
                      -------------------------------------------------
                                                                              S&P 500
                      Institutional -      Investment +       Adviser ++       Index
- ---------------------------------------------------------------------------------------
<S>                   <C>                  <C>                <C>             <C>
One Year                 8.30%                8.20%             8.10%          27.80%
- ---------------------------------------------------------------------------------------
Five Years              14.96%               14.84%            14.78%          25.03%
- ---------------------------------------------------------------------------------------
Ten Years               13.01%               12.95%            12.92%          16.82%
- ---------------------------------------------------------------------------------------
</TABLE>


Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

+ Represents an investment in the Investment Class which commenced operations
5/6/96. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.15% Shareholder
Servicing Fee applicable to the Investment Class.

++ Represents an investment in the Adviser Class which commenced operations
7/17/96. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.25% 12b-1 Fee
applicable to the Adviser Class.

Total returns for the Investment Class of the Portfolio reflect expenses
reimbursed by the Adviser for certain periods. Without such reimbursements,
total returns would have been lower.

* Total returns are compared to the S&P 500 Index, an unmanaged market index.



                                                                               7
<PAGE>   8


MAS Funds/Equity


EQUITY PORTFOLIO

[PHOTO]


from left:
John Hevner and Jim Scott


THE EQUITY PORTFOLIO is Miller Anderson & Sherrerd's core-strategy stock fund.
The Portfolio is heavily oriented toward large-capitalization stocks, with
strategic commitments to value and growth equities. In constructing the
Portfolio, the MAS equity team applies a value-oriented discipline to three key
equity decisions: stock selection, sector allocation, and portfolio risk
control.

    MAS's goals for core equity investing are to provide capital appreciation
with income through broad market exposure, and to achieve above-average,
consistent returns compared to other managers and the broad market averages over
long periods of time.

    The fiscal year ended with the stock market in the throes of a general
decline. Indeed, by the end of this period, the individual stocks in the S&P 500
had fallen an average of nearly 24% from their 52-week highs. The Portfolio
outperformed its benchmark for the year by returning 30.1%, compared to 27.8%
for the S&P 500 Index. Competitively, the Portfolio outperformed the Lipper
Growth & Income Index, which returned 19.4% for the year, and nearly matched the
Lipper Growth Index, which returned 30.2%. For the trailing three-, five-, and
ten-year periods, the Portfolio surpassed the return of the Growth & Income
Index (20.6% vs. 16.8%, 20.8% vs. 18.1%, and 15.2% vs. 13.4%, respectively).
While exceeding the ten-year return of the Growth Index (15.2% vs. 15.0%), the
Portfolio slightly lagged for the three- and five-year periods (20.6% vs. 21.8%
and 20.8% vs. 21.4%, respectively).

    During fiscal 1999, the market's growth style dominated value style returns
by extreme margins for the first two quarters, much as it had for the previous
three and one-half years. The Portfolio's return kept pace, however, and
actually outperformed the S&P 500 in each of these two quarters. For an
investment discipline which maintains a highly visible and consistent valuation
component, outperforming the benchmark under such difficult market conditions
was very challenging.

    In mid-April, 1999, the market saw a dramatic shift in investor sentiment
favoring value at the expense of growth. Economically sensitive stocks recorded
sharp price gains, and cyclical, value-oriented stocks were powered in a strong
upward price move. The Portfolio also outperformed the index during those
changed market conditions. The diversified approach between growth and value had
struck a good balance. The Portfolio's value themes of industrial restructurings
and under-appreciated, high-quality businesses at low valuations complemented
its growth themes, which focused on top-line growth and market penetration in
retail, and industry leadership within telephony and technology.

    The fourth fiscal quarter witnessed extremely difficult investment
conditions. The Portfolio underperformed its benchmark as the market retreated
broadly and fears of inflation and rate increases surfaced (fears that MAS
believed were, for the most part, overstated). As the market declined, growth
returned suddenly as the dominant equity style. Concurrently, the Portfolio
unwound its slight value tilt and adopted a neutral style posture against the
index; this proved to be an effective strategy. What constrained performance,
however, was the reversion of large-cap investor sentiment to favor the very
largest ("mega"-cap) stocks within the S&P 500 universe. While it may be true
that periods of uncertainty could result in a flight to safety by investors, MAS
would not agree that the most appropriate proxy for equity-safety is size. A
more compelling proxy would be valuation, a cornerstone of the Portfolio. During
the



8

<PAGE>   9


quarter, the market became increasingly narrow, as growth stocks (mainly
technology) outperformed most other sectors by wide margins. Within the S&P 500
stock universe, the largest fifty stocks, designated by market capitalization,
were up in August while the overall index was down. In September, while the
index declined again, the largest fifty stocks dropped proportionately less.
Investors have focused increasingly on momentum and the largest stocks, while
all but ignoring value and many small-to-medium sized companies.

- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT OVER 10 YEARS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
Fiscal Years Ending         MAS
September 30            Funds Equity    S&P 500
<S>                    <C>             <C>            <C>
89                       1000             1000           9/30/89
                          983             1021          12/31/89
                          953              990           3/31/90
                         1039             1052           6/30/90
90                        883              908           9/30/90
                          982              989          12/31/90
                         1150             1133           3/31/91
                         1150             1130           6/30/91
91                       1238             1190           9/30/91
                         1375             1290          12/31/91
                         1333             1258           3/31/92
                         1333             1282           6/30/92
92                       1381             1322           9/30/92
                         1482             1389          12/31/92
                         1507             1449           3/31/93
                         1495             1456           6/30/93
93                       1534             1494           9/30/93
                         1581             1528          12/31/93
                         1528             1471           3/31/94
                         1539             1477           6/30/94
94                       1597             1549           9/30/94
                         1588             1549          12/31/94
                         1725             1699           3/31/95
                         1880             1862           6/30/95
95                       2014             2010           9/30/95
                         2113             2131          12/31/95
                         2242             2245           3/31/96
                         2332             2346           6/30/96
96                       2346             2418           9/30/96
                         2548             2620          12/31/96
                         2608             2690           3/31/97
                         2996             3159           6/30/97
97                       3249             3396           9/30/97
                         3206             3494          12/31/97
                         3647             3981           3/31/98
                         3696             4112           6/30/98
98                       3162             3703           9/30/98
                         3837             4492          12/31/98
                         4108             4716           3/31/99
                         4550             5048           6/30/99
99                       4116             4733           9/30/99
</TABLE>


    Thus, the strong fiscal year performance, in which the Portfolio combined
positive sector weighting, stock selection, and risk control, ended with
disappointing fourth quarter results. As a result of being underweight several
mega-cap stocks which generated exceptional relative returns, and overweight
several mid-cap stocks which performed poorly, the Portfolio gave back some of
its earlier gains against the market. Recent evidence suggested that economic
growth was not in jeopardy from a proactive Federal Reserve, and inflation
remained under control as of fiscal year-end. On the strength of this evidence,
the outlook for large caps at fiscal year-end appeared favorable. However, fears
of inflation and interest rate hikes continued to plague the market, thereby
increasing the likelihood of market volatility in the periods ahead.

- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                                         MAS Equity
                     ----------------------------------------------
                                                                       S&P 500
                     Institutional -    Investment +     Adviser ++      Index
- ---------------------------------------------------------------------------------
<S>                  <C>               <C>             <C>            <C>
One Year                30.15%            29.92%          29.80%         27.80%
- ---------------------------------------------------------------------------------
Five Years              20.85%            20.70%          20.74%         25.03%
- ---------------------------------------------------------------------------------
Ten Years               15.20%            15.13%          15.15%         16.82%
- ---------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

+ Represents an investment in the Investment Class which commenced operations
4/10/96. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.15% Shareholder
Servicing Fee applicable to the Investment Class.

++ Represents an investment in the Adviser Class which commenced operations
1/16/98. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.25% 12b-1 Fee
applicable to the Adviser Class. It is expected that, over time, returns for the
Adviser Class will be lower than for the other classes due to the higher
expenses charged.

Total returns for the Investment Class of the Portfolio reflect expenses
reimbursed by the Adviser for certain periods. Without such reimbursements,
total returns would have been lower.

* Total returns are compared to the S&P 500 Index, an unmanaged market index.



                                                                               9
<PAGE>   10


MAS Funds/Equity


SMALL CAP VALUE PORTFOLIO


"FOR THE FISCAL YEAR, THE PORTFOLIO OUTPERFORMED THE RUSSELL 2000 INDEX BY 476
BASIS POINTS." FROM LEFT:


[PHOTO]


from left:
Marjorie Zwick, Tracey Ivey and Carolyn Patton



THE SMALL CAP VALUE PORTFOLIO applies Miller Anderson & Sherrerd's value
investment philosophy to the small- and medium-sized equity universe, combining
fundamental research with a disciplined, quantitative investment process. MAS
generally keeps sector weights within five percentage points of those of the
Russell 2000 Index, with strategic over- and under-weightings assigned to
different sectors based on their relative investment attractiveness. Decisions
about portfolio composition and structure are made by a team of MAS equity
professionals who specialize in the small- and mid-cap market segments.

    MAS's investment process is driven chiefly by bottom-up considerations,
although broad macroeconomic trends that influence the outlook for certain
industries are taken into account during the decision-making process. As a
value-oriented fund, the Portfolio emphasizes stocks with below-average
valuations. However, unlike many value strategies, MAS's methodology also
includes additional quality and growth factors such as the expected future
growth in earnings and dividends, the recent pattern of earnings estimate
revisions, and subjective judgments regarding the quality of a company's
business franchise. As a result, the Portfolio will generally look similar to
the Russell 2000 Index in the quality and growth characteristics of its
holdings, while the overall valuation of the Portfolio will generally be lower.

    Small-cap stocks, as represented by the Russell 2000 Index, appreciated
close to 20% during the twelve months ended September 30, 1999. This performance
was reflective of improving global economic conditions abroad and a better
earnings outlook for small- and mid-sized companies. The valuation gap between
growth and value stocks continued to approach record levels. MAS believes that
an eventual narrowing of this gap is possible, as an improving global economic
environment has had a positive impact on the earnings prospects for many small-
and mid-sized companies.



10

<PAGE>   11


    For the fiscal year, the Portfolio outperformed the Russell 2000 Index by
476 basis points. Stock selection was the primary driver of outperformance
during the period, while sector allocation decisions detracted slightly from
returns. Stock selection was strongest within the technology, financial
services, and telephone services sectors. Although the Portfolio had
less-than-index exposure to technology during the year, stock selection within
that sector also had a positive effect on performance. Pinnacle Systems, Verio
Inc., and Powerwave Technologies were the top contributing stocks within the
technology sector. During recent months, the investment team increased the
Portfolio's exposure to telephone services, and at fiscal year-end, the
Portfolio held an overweight position in that sector relative to the Russell
2000 Index. McLeod, Voicestream Wireless, and Western Wireless were the top
contributing stocks within the telephone services sector. Bally's Total Fitness,
a top ten holding as of September 30, 1999, was also a strong performer during
the period.


- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT OVER 10 YEARS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
Fiscal Years Ending      MAS  Funds Small
September 30             Cap Value           Russell 2000
<S>                    <C>                   <C>            <C>
89                       1000                  1000             9/30/89
                          948                   951            12/31/89
                          947                   929             3/31/90
                          994                   965             6/30/90
90                        724                   729             9/30/90
                          791                   765            12/31/90
                         1044                   993             3/31/91
                         1049                   977             6/30/91
91                       1180                  1057             9/30/91
                         1296                  1118            12/31/91
                         1390                  1202             3/31/92
                         1307                  1119             6/30/92
92                       1347                  1152             9/30/92
                         1591                  1324            12/31/92
                         1624                  1380             3/31/93
                         1691                  1411             6/30/93
93                       1855                  1534             9/30/93
                         1928                  1574            12/31/93
                         1914                  1532             3/31/94
                         1890                  1472             6/30/94
94                       2004                  1574             9/30/94
                         1970                  1545            12/31/94
                         2008                  1616             3/31/95
                         2140                  1768             6/30/95
95                       2372                  1942             9/30/95
                         2384                  1985            12/31/95
                         2539                  2086             3/31/96
                         2745                  2190             6/30/96
96                       2942                  2198             9/30/96
                         3223                  2312            12/31/96
                         3193                  2192             3/31/97
                         3724                  2548             6/30/97
97                       4407                  2927             9/30/97
                         4210                  2829            12/31/97
                         4639                  3113             3/31/98
                         4405                  2968             6/30/98
98                       3599                  2370             9/30/98
                         4150                  2757            12/31/98
                         3999                  2607             3/31/99
                         4717                  3013             6/30/99
99                       4456                  2823             9/30/99
</TABLE>



    During the second half of the fiscal year, the Portfolio's
greater-than-index exposure to the energy sector had a favorable impact on
performance. Additionally, less-than-index exposure to financial services and
consumer durables further enhanced Portfolio performance. Finally, the decision
to underweight technology during the period detracted from results, as did stock
selection within health care.

- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                                   MAS Small Cap Value
                               ---------------------------------
                                                                        Russell
                              Institutional -         Adviser ++          2000
- ---------------------------------------------------------------------------------
<S>                           <C>                     <C>               <C>
One Year                         23.83%                 23.83%           19.07%
- ---------------------------------------------------------------------------------
Five Years                       17.33%                 17.33%           12.39%
- ---------------------------------------------------------------------------------
Ten Years                        16.12%                 16.12%           10.93%
- ---------------------------------------------------------------------------------
</TABLE>


Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results. Small-capitalization stock prices have
experienced a greater degree of market volatility than those of
large-capitalization companies.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

++ Represents an investment in the Adviser Class which commenced operations
1/22/99. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.25% 12b-1 Fee
applicable to the Adviser Class. It is expected that, over time, returns for the
Adviser Class will be lower than for the Institutional Class due to the higher
expenses charged.

* Total returns are compared to the Russell 2000 Index, an unmanaged market
  index.

As of 9/30/99, the Portfolio's holdings in Pinnacle Systems, Verio Inc.,
Powerwave Technologies, McLeod, Voicestream Wireless, Western Wireless, and
Bally's Total Fitness were 3.1%, 0.0%, 0.9%, 1.5%, 0.7%, 0.0%, and 2.2%,
respectively.



                                                                              11

<PAGE>   12

MAS Funds/Equity


MID CAP GROWTH PORTFOLIO


"THE MARKET ENVIRONMENT WAS EXTREMELY VOLATILE AS THE INTERNET BUBBLE GREW, OIL
PRICES SPIKED, AND INFLATION FEARS IN THE SPRING BEGAN TO PUT PRESSURE ON STOCK
PRICES."


THE MID CAP GROWTH PORTFOLIO seeks to capitalize on the relative inefficiencies
of the small- and mid-cap equity markets. The Portfolio targets companies with
sustainable growth that exceeds market expectations by focusing on those whose
growth surpasses Wall Street analysts' estimates. MAS looks to capture the
return potential of rapidly growing companies while avoiding stocks that are
likely to disappoint. To identify such companies, MAS's mid-cap growth strategy
employs a disciplined four-part process that incorporates quantitative,
fundamental and valuation analysis as well as a strict sell discipline.

    First, MAS conducts a quantitative screen that sorts the stocks within each
economic sector based on earnings- estimate revisions and growth potential. This
screening process limits investment choices to a statistically advantaged pool.

    MAS then conducts extensive fundamental research on a group of eligible
stocks to find candidates for purchase. Only high-quality companies with strong
sales growth, rising profit margins, and high returns on capital are included in
the Portfolio. Qualitative measures are then examined, including management
quality and a company's strategic position within its industry.

    MAS supplements fundamental analysis with valuation analysis. In addition to
examining measures such as price/earnings, price/sales, and price/cash flow,
valuation analysis uses a discounted-cash-flow model. Each stock's valuation is
assessed relative to its growth prospects. The goal of this valuation work is to
identify and weed out the most overvalued securities.

    The sell discipline mandates an ongoing reevaluation of securities and
produces a portfolio that always holds only those securities that are currently
most attractive. If a holding falls into one of the bottom two
earnings-estimate-revision quintiles of MAS's universe, it will be sold. MAS
also sells stocks when fundamental research uncovers unfavorable trends.
Analysts are often more reluctant to lower estimates than to raise them.
Therefore, companies that are having difficulties may first experience small
negative estimate revisions; such companies are frequently sold before larger
revisions materialize. Finally, holdings are sold or trimmed back when their
valuations exceed the level believed to be reasonable given their growth
prospects.

    During fiscal 1999, the Portfolio returned 64.3% versus 25.5% for its
benchmark. The market environment was extremely volatile as the Internet bubble
grew, oil prices spiked, and inflation fears in the spring began to put pressure
on stock prices. The simultaneous interest rate cuts by central banks around the
world in the early fall of 1998 provided much-needed liquidity to the markets.
MAS viewed these interest rate cuts as extremely bullish, given the attractive
valuation levels in early October. The Portfolio's emphasis was shifted from
stable growth stocks to more aggressive stocks following the market sell-off in
early October. New purchases were focused in the following areas: long duration,
high beta securities such as Internet stocks; cyclical growth companies; and
companies that were mispriced because of their ongoing need for capital. The
market rewarded these aggressive actions, and while the Portfolio's exposure to
long duration securities was maintained, the other two areas were subsequently
reduced or eliminated.

    In April, fears of rising interest rates caused the market to rotate
violently to traditional value and cyclical stocks. This cyclical/value rally
was short-lived as growth equities re-established their dominance six weeks
later. When the Federal Reserve raised the federal funds rate by 25 basis points
in June and again in August, equity prices came under pressure. The Portfolio
was positioned slightly in favor of cyclical growth and companies showing
improving profitability, and away from domestic stable growers. Sectors with
largely domestic earnings streams experienced signifi-




12

<PAGE>   13


cant underperformance in the early summer, as did those adversely affected by
rising interest rates, including consumer non-durables, health care, financial
services and electric utilities. Conversely, outperforming sectors included
those that stood to benefit from an improving Asian economy, such as
semiconductors.

    Over the course of the Portfolio's fiscal year, sector selection benefited
performance. The overweighted telephone services, technology, consumer services,
and energy sectors and underweighted utilities, food & tobacco, financial
services, basic resources, and consumer durables sectors all contributed
significantly to performance. The underweight in transportation detracted
slightly from performance, with most of the other sectors modestly adding to
performance.

- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
Fiscal Years Ending      MAS  Funds
September 30           Mid Cap Growth         S&P MidCap 400
<S>                    <C>                    <C>                 <C>
*                        1000                     1000               4/1/94
                         1122                     1059               7/1/94
90                        900                      871              10/1/94
                         1097                      979               1/1/95
                         1327                     1204               4/1/95
                         1347                     1195               7/1/95
91                       1497                     1309              10/1/95
                         1749                     1470               1/1/96
                         1642                     1463               4/1/96
                         1533                     1417               7/1/96
92                       1540                     1472              10/1/96
                         1800                     1645               1/1/97
                         1769                     1699               4/1/97
                         1819                     1739               7/1/97
93                       2062                     1826              10/1/97
                         2128                     1875               1/1/98
                         2004                     1804               4/1/98
                         1832                     1738               7/1/98
94                       1994                     1855              10/1/98
                         2013                     1808               1/1/99
                         2127                     1956               4/1/99
                         2300                     2126               7/1/99
95                       2604                     2334              10/1/99
                         2743                     2367               1/1/00
                         3058                     2513               4/1/00
                         3313                     2585               7/1/00
96                       3354                     2660              10/1/00
                         3258                     2821               1/1/01
                         2956                     2779               4/1/01
                         3565                     3188               7/1/01
97                       4295                     3700              10/1/01
                         4338                     3731               1/1/02
                         5239                     4142               4/1/02
                         5420                     4053               7/1/02
98                       4380                     3467              10/1/02
                         5959                     4444               1/1/03
                         6344                     4161               4/1/03
                         7193                     4750               7/1/03
99                       7196                     4350              10/1/03
</TABLE>


    Stock selection was also strong, contributing over half of the
outperformance against the index. In technology, exposure to the rapid growth
areas of the Internet and communications-related technology companies,
especially wireless communications, drove performance. In consumer services,
although the sector as a whole underperformed, superior stock selection allowed
holdings to be additive to performance. In addition, the Portfolio's energy
focus was rewarded as the sector rebounded from severely depressed levels, aided
by the rise in oil prices. In health care, two of the Portfolio's holdings,
Lincare and Health Management Associates, detracted from performance, following
strong outperformance during fiscal 1998. Finally, the Portfolio benefited to a
small extent from participation in IPOs.


- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                                     MAS Mid Cap Growth
                              ------------------------------
                                                                 S&P MidCap
                              Institutional -    Adviser ++       400 Index
- -----------------------------------------------------------------------------
<S>                            <C>               <C>             <C>
One Year                         64.27%            63.87%          25.49%
- -----------------------------------------------------------------------------
Five Years                       29.26%            29.11%          18.58%
- -----------------------------------------------------------------------------
Since Inception                  23.08%            23.00%          16.73%
- -----------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results. Small-capitalization stock prices have
experienced a greater degree of market volatility than those of
large-capitalization companies.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

++ Represents an investment in the Adviser Class which commenced operations
1/31/97. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.25% 12b-1 Fee
applicable to the Adviser Class.

* The Mid Cap Growth Portfolio commenced operations on 3/30/90. Total returns
  are compared to the S&P MidCap 400 Index, an unmanaged market index.

As of 9/30/99, the Portfolio's holdings in Lincare and Health Management
Associates were 1.7% and 0.0%, respectively.



                                                                              13

<PAGE>   14

MAS Funds/Equity



MID CAP VALUE PORTFOLIO


"THE VALUATION GAP BETWEEN GROWTH AND VALUE STOCKS CONTINUED TO APPROACH RECORD
LEVELS."


[PHOTO]


from left:
Helene Kennedy and Alisa Skatrud


THE MID CAP VALUE PORTFOLIO applies Miller Anderson & Sherrerd's value
investment philosophy to the medium-sized equity universe, combining fundamental
research with a disciplined, quantitative investment process. MAS generally
keeps sector weights within five percentage points of those of the S&P MidCap
400 Index, with strategic over- and under-weightings assigned to different
sectors based on their relative investment attractiveness. Decisions about
portfolio composition and structure are made by a team of MAS equity
professionals who specialize in the small- and mid-cap market segments.

    MAS's investment process is driven chiefly by bottom-up considerations,
although broad macroeconomic trends that influence the outlook for certain
industries are taken into account during the decision-making process. As a
value-oriented fund, the Portfolio emphasizes stocks with below-average
valuations. However, unlike many value strategies, MAS's methodology also
includes additional quality and growth factors such as the expected future
growth in earnings and dividends, the recent pattern of earnings estimate
revisions, and subjective judgments regarding the quality of a company's
business franchise. As a result, the Portfolio will generally look similar to
the S&P MidCap 400 Index in the quality and growth characteristics of its
holdings, while the overall valuation of the Portfolio will generally be lower.

    Mid-cap stocks, as represented by the S&P MidCap 400 Index, appreciated over
20% during the twelve months ended September 30, 1999. This performance was
reflective of improving global economic conditions abroad and a better earnings
outlook for small- and mid-sized companies. The valuation gap between growth and
value stocks continued to approach record levels. MAS believes that an eventual
narrowing of this gap is possible, as an improving global economic environment
has had a positive impact on the earnings prospects for many small- and
mid-sized companies.

    For the fiscal year, the Portfolio outperformed the S&P MidCap 400 Index by
395 basis points. Both stock selection and sector allocation decisions had a
positive impact on performance. Stock selection was strongest within the
technology, consumer services, telephone services, and energy sectors. Valassis
Communications, a top ten holding during the past fiscal year, was a strong
performer during the period, contributing nearly 100 basis points to the
Portfolio's outperformance. Although the Portfolio



14

<PAGE>   15


had less-than-index exposure to technology during the year, stock selection
within that sector also had a positive effect on performance. During recent
months, the investment team increased the Portfolio's exposure to telephone
services, and at fiscal year-end, the Portfolio held an overweight position in
that sector relative to the S&P MidCap 400 Index. McLeod, Voicestream Wireless,
and Western Wireless were the top contributing stocks within the telephone
services sector.


- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
Fiscal Years Ending     MAS Funds
September 30            Mid Cap Value   S&P MidCap 400
<S>                     <C>             <C>             <C>
*                       1000            1000             12/31/94
                        1107            1082              3/31/95
                        1217            1176              6/30/95
95                      1345            1291              9/30/95
                        1327            1309             12/31/95
                        1446            1390              3/31/96
                        1545            1430              6/30/96
96                      1645            1472              9/30/96
                        1868            1561             12/31/96
                        1873            1538              3/31/97
                        2202            1764              6/30/97
97                      2655            2047              9/30/97
                        2608            2064             12/31/97
                        2923            2291              3/31/98
                        2867            2242              6/30/98
98                      2471            1918              9/30/98
                        3026            2459             12/31/98
                        2914            2302              3/31/99
                        3431            2628              6/30/99
99                      3199            2407              9/30/99
</TABLE>

    During the second half of the fiscal year, the Portfolio's
greater-than-index exposure to the energy sector, predominantly oil service
companies, had a favorable impact on performance. Top performing stocks within
the energy sector included Nabors Industries and Baker Hughes. Additionally,
less-than-index exposure to utilities, heavy industry, and basic resources
enhanced Portfolio performance. Finally, the decision to underweight technology
stocks during the period detracted from results, as did stock selection within
health care.

- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                                   MAS Mid Cap Value
                    -----------------------------------------------
                                                                        S&P MidCap
                    Institutional -     Investment +     Adviser ++     400 Index
- -----------------------------------------------------------------------------------
<S>                 <C>                 <C>              <C>            <C>
One Year                29.44%             29.30%          29.12%         25.49%
- -----------------------------------------------------------------------------------
Since Inception         27.73%             27.58%          27.67%         20.31%
- -----------------------------------------------------------------------------------
</TABLE>


Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results. Small-capitalization stock prices have
experienced a greater degree of market volatility than those of
large-capitalization companies.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

+ Represents an investment in the Investment Class which commenced operations
5/10/96. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.15% Shareholder
Servicing Fee applicable to the Investment Class.

++ Represents an investment in the Adviser Class which commenced operations
07/17/98. Total returns for periods beginning prior to this date are based on
the performance of the Institutional Class and do not include the 0.25% 12b-1
Fee applicable to the Adviser Class. It is expected that, over time, returns for
the Adviser Class will be lower than for the other classes due to the higher
expenses charged.

Total returns for the Institutional and Investment Classes of the Portfolio
reflect expenses reimbursed by the Adviser for certain periods. Without such
waivers and/or reimbursements, total returns would have been lower.

* The Mid Cap Value Portfolio commenced operations on 12/30/94. Total returns
  are compared to the S&P MidCap 400 Index, an unmanaged market index.

As of 9/30/99, the Portfolio's holdings in Valassis Communications, McLeod,
Voicestream Wireless, Western Wireless, Nabors Industries, and Baker Hughes were
2.1%, 1.1%, 0.0%, 0.6%, 1.6%, and 0.1%, respectively.




                                                                              15

<PAGE>   16

MAS Funds/Equity


SMALL CAP GROWTH PORTFOLIO


"THE GOAL OF THIS VALUATION WORK IS TO IDENTIFY AND WEED OUT THE MOST OVERVALUED
SECURITIES."


THE SMALL CAP GROWTH PORTFOLIO seeks to capitalize on the relative
inefficiencies of the small-cap equity markets. The Portfolio targets companies
with sustainable growth that exceeds market expectations by focusing on those
whose growth surpasses Wall Street analysts' estimates. MAS looks to capture the
return potential of rapidly growing companies while avoiding stocks that are
likely to disappoint. To identify such companies, MAS's small-cap growth
strategy employs a disciplined four-part process that incorporates quantitative,
fundamental and valuation analysis as well as a strict sell discipline.

    First, MAS conducts a quantitative screen that sorts the stocks within each
economic sector based on earnings estimate revisions and growth potential. This
screening process limits investment choices to a statistically advantaged pool.

    MAS then conducts extensive fundamental research on a group of eligible
stocks to find candidates for purchase. Only high-quality companies with strong
sales growth, rising profit margins, and high returns on capital are included in
the Portfolio. Qualitative measures are then examined, including management
quality and a company's strategic position within its industry.

    MAS supplements fundamental analysis with valuation analysis. In addition to
examining measures such as price/earnings, price/sales, and price/cash flow,
valuation analysis uses a discounted-cash-flow model. Each stock's valuation is
assessed relative to its growth prospects. The goal of this valuation work is to
identify and weed out the most overvalued securities.

    The sell discipline mandates an ongoing reevaluation of securities and
produces a portfolio that always holds only those securities that are currently
most attractive. If a holding falls into one of the bottom two
earnings-estimate-revision quintiles of MAS's universe, it will be sold. MAS
also sells stocks when fundamental research uncovers unfavorable trends.
Analysts are often more reluctant to lower estimates than to raise them.
Therefore, companies that are having difficulties may first experience small
negative estimate revisions; such companies are frequently sold before larger
revisions materialize. Finally, holdings are sold or trimmed back when their
valuations exceed the level believed to be reasonable given their growth
prospects.

    During fiscal 1999, the Portfolio returned 276.7% versus 19.1% for its
benchmark. The market environment was extremely volatile as the Internet bubble
grew, oil prices spiked, and inflation fears in the spring began to put pressure
on stock prices. The simultaneous interest rate cuts by central banks around the
world in the early fall of 1998 provided much-needed liquidity to the markets.
MAS viewed these interest rate cuts as extremely bullish given the attractive
valuation levels in early October. The Portfolio's emphasis was shifted from
stable growth stocks to more aggressive stocks following the market sell-off in
early October. New purchases were focused in the following areas: long duration,
high beta securities such as Internet stocks; cyclical growth companies; and
companies that were mispriced because of their ongoing need for capital. The
market rewarded these aggressive actions, and while the Portfolio's exposure to
long duration securities was maintained, the other two areas were subsequently
reduced or eliminated.

    In April, fears of rising interest rates caused the market to rotate
violently to traditional value and cyclical stocks. This cyclical/value rally
was short-lived, as growth equities re-established their dominance six weeks
later. When the Federal Reserve raised the federal funds rate by 25 basis points
in June and again in August, equity prices came under pressure. The Portfolio
was positioned slightly in favor of cyclical growth and companies showing
near-term improving profitability, and away from domestic stable growers.
Sectors with largely domestic earnings streams experienced significant
underperformance in the early summer, as did those adversely affected by rising
interest rates, including consumer non-durables, health care, financial
services, and electric utilities. Conversely, outperforming sectors included
those that stood to benefit from an improving Asian economy, such as
semiconductors.


16

<PAGE>   17

    Over the course of the Portfolio's fiscal year, sector selection benefited
performance. The overweighted technology, telephone services, and consumer
services sectors, and underweighted financial services and consumer durables
sectors, contributed significantly to the Portfolio's outperformance. The food
and tobacco sector detracted marginally, with most of the other sectors modestly
adding to performance.

    Stock selection was also strong, contributing much of the outperformance
against the index. In addition, short-term trading had a significant impact on
performance, as the Portfolio's smaller size afforded maximum flexibility in
managing the assets. This was particularly helpful in the rapidly rotating,
volatile market of the past twelve months. The Portfolio also benefited
substantially from participation in IPOs, which had significant performance
impacts because of the Portfolio's relatively small size. Had the Portfolio been
larger, the impact probably would have been less. In technology, exposure to the
rapid growth areas of the Internet and communications-related technology
companies, especially wireless communications, drove performance. Finally, the
Portfolio's energy focus was rewarded as the sector rebounded from severely
depressed levels, aided by the rise in oil prices.


- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
Fiscal Years Ending       MAS Funds
  September 30         Small Cap Growth        Russell 2000
<S>                    <C>                      <C>               <C>
*                       1000                     1000               6/30/98
98                       857                      799               9/30/98
                        1322                      929              12/31/98
                        2033                      878               3/31/99
                        2839                     1015               6/30/99
99                      3228                      951               9/30/99
</TABLE>



    It should be noted that the market conditions of the past fiscal year were
quite unusual. The levels of volatility and the explosive performance of many
IPOs were virtually unprecedented, and the Portfolio was small and nimble enough
to take full advantage of this environment. MAS would be very surprised if these
market conditions were to continue, and in the future the Portfolio cannot
expect to be able to produce the same degree of outstanding performance that it
generated during the past fiscal year.

- --------------------------------------------------------------------------------
    AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                                MAS Small                       Russell 2000
                               Cap Growth                          Index
- -----------------------------------------------------------------------------
<S>                           <C>                               <C>
One Year                       276.66%                           19.07%
- -----------------------------------------------------------------------------
Since Inception                154.96%                            (3.95)%
- -----------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results. Small-capitalization stock prices have
experienced a greater degree of market volatility than those of
large-capitalization companies.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

Total returns for the Portfolio reflect expenses waived and/or reimbursed by the
Adviser for certain periods. Without such waivers and/or reimbursements, total
returns would have been lower.

* The Small Cap Growth Portfolio commenced operations on 6/30/98. Total
  returns are compared to the Russell 2000 Index, an unmanaged market index.
  The Portfolio's total return reflects, among other things, the use of
  short-term trading techniques as the Adviser responded to market conditions
  in existence at that time, including close-in-time purchases and sales of
  initial public offerings. There can be no assurance that these market
  conditions will continue or re-occur, nor can the Adviser guarantee continued
  access to and use of profitable short-term trading techniques that were
  advantageous during that period.



                                                                              17
<PAGE>   18


MAS Funds/Fixed Income


FIXED INCOME PORTFOLIO


"DESPITE A DIFFICULT MARKET ENVIRONMENT DURING THE PAST FISCAL YEAR, THE
PORTFOLIO OUTPERFORMED ITS BENCHMARK BY 60 BASIS POINTS."


[PHOTO]


from left:
Mark Foust, Joe Braccia, Bruce Rodio and Marc Crespi

THE FIXED INCOME PORTFOLIO is the core offering of the MAS Funds fixed-income
portfolios. Securities in this Portfolio include U.S. government bonds,
corporate bonds, mortgages, non-dollar bonds, and other fixed-income securities.
The Portfolio is actively managed by Miller Anderson & Sherrerd's fixed-income
team, which makes strategic decisions about portfolio structure and composition.

    MAS has three major objectives for fixed-income investing. The first is to
provide investors with a positive real return--a total return including income
and capital gains that is greater than the rate of inflation. The second is to
help diversify equity-oriented strategies in other areas of clients' investment
programs. The third is to provide a hedge against a prolonged, severe economic
contraction. In order to provide this hedge, the Portfolio maintains high
average credit quality and includes a significant portion of noncallable and
longer-maturity securities. This positions the Portfolio to perform well when
other market sectors experience poor returns.

    There are five key decisions that the fixed-income team makes in building
the Portfolio. The first decision relates to the amount of interest-rate risk in
the Portfolio. Bond values generally increase when interest rates fall and
decrease when interest rates rise. Consequently, there are times when it is
better to bear more interest-rate risk than others. MAS bases the interest-rate
risk decision on the level of real interest rates and the steepness of the yield
curve, tempered by a strategic view about economic growth and the prospects for
inflation. When real rates are high and longer-maturity bonds have significantly
higher yields than short-term bonds, historically MAS has found it to be an
attractive time to have an above- benchmark level of interest-rate sensitivity.

    The second decision involves determining which maturities offer the best
value relative to their risk. Third, the team considers which fixed-income
markets around the world offer the best value, on an opportunistic basis;
relative real interest rates, the steepness of U.S. and foreign yield curves,
and judgments about currency values drive this decision. The fourth decision
relates to how much credit risk the Portfolio should bear. MAS's research shows
that a diversified approach toward owning corporate bonds enhances overall
portfolio returns. The Portfolio includes a limited number of
opportunistically-selected bonds that are rated below investment grade.

    Finally, MAS actively manages the amount of prepayment risk, or call risk,
within the Portfolio. Most mortgages and some corporate bonds contain an option
to prepay the principal amount


18

<PAGE>   19

prior to maturity. As a result, these bonds have higher yields, and MAS's
fixed-income team calculates whether this additional yield is sufficient to
compensate for the embedded option risk.



- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT OVER 10 YEARS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
Fiscal Years Ending    MAS Funds
September 30           Fixed Income              Salomon Broad
<S>                    <C>                    <C>               <C>
89                      1000                    1000               9/30/89
                        1032                    1037              12/31/89
                        1011                    1029               3/31/90
                        1053                    1066               6/30/90
90                      1038                    1076               9/30/90
                        1106                    1131              12/31/90
                        1149                    1161               3/31/91
                        1169                    1182               6/30/91
91                      1257                    1249               9/30/91
                        1343                    1312              12/31/91
                        1315                    1297               3/31/92
                        1380                    1349               6/30/92
92                      1437                    1407               9/30/92
                        1457                    1411              12/31/92
                        1525                    1470               3/31/93
                        1581                    1511               6/30/93
93                      1642                    1551               9/30/93
                        1660                    1551              12/31/93
                        1608                    1508               3/31/94
                        1565                    1493               6/30/94
94                      1570                    1501               9/30/94
                        1568                    1507              12/31/94
                        1645                    1583               3/31/95
                        1738                    1680               6/30/95
95                      1792                    1712               9/30/95
                        1867                    1786              12/31/95
                        1862                    1755               3/31/96
                        1885                    1764               6/30/96
96                      1929                    1797               9/30/96
                        2004                    1851              12/31/96
                        2002                    1841               3/31/97
                        2082                    1908               6/30/97
97                      2150                    1971               9/30/97
                        2197                    2029              12/31/97
                        2234                    2062               3/31/98
                        2271                    2110               6/30/98
98                      2320                    2197               9/30/98
                        2348                    2206              12/31/98
                        2355                    2196               3/31/99
                        2317                    2176               6/30/99
99                      2328                    2191               9/30/99
</TABLE>


    The Portfolio's long-term record reflects successful judgments about these
key decisions. Despite a difficult market environment during the past fiscal
year, the Portfolio outperformed its benchmark by 60 basis points. Yields on
U.S. Treasuries increased during this period due to improving global economic
conditions and renewed inflation fears. While high levels of real interest rates
justified the Portfolio's above-benchmark interest-rate risk strategy during the
1999 calendar year, this decision had an unfavorable effect on relative
performance due to the aforementioned rise in interest rates. Higher rates also
had an adverse impact on other fixed-income sectors, yet most corporate and
mortgage-backed securities outperformed Treasuries during the period. The
decision to overweight these non-Treasury sectors, especially yankee issues, and
an opportunistic allocation to below investment-grade securities, had a very
favorable impact on the Portfolio's relative returns. A modest yield-curve
strategy, designed to benefit from a narrowing of the yield spread between
short- and long-maturities, had a favorable effect on returns, and was
eventually removed. A position in inflation-indexed Treasuries (TIPS) also had a
favorable impact on relative performance, as these securities outperformed
nominal Treasuries. The allocation to non-dollar bonds was zero for the entire
fiscal year, as it remained difficult to identify superior opportunities among
high-quality non-dollar securities.

- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                                                 MAS Fixed Income
                      ---------------------------------------------------
                                                                                  Salomon
                      Institutional -       Investment +       Adviser ++        Broad Index
- --------------------------------------------------------------------------------------------
<S>                   <C>                   <C>                <C>               <C>
One Year                 0.33%                 0.24%             0.07%             (0.27)%
- --------------------------------------------------------------------------------------------
Five Years               8.20%                 8.11%             8.04%             7.86%
- --------------------------------------------------------------------------------------------
Ten Years                8.82%                 8.77%             8.73%             8.16%
- --------------------------------------------------------------------------------------------
</TABLE>


Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

+ Represents an investment in the Investment Class which commenced operations
10/15/96. Total returns for periods beginning prior to this date are based on
the performance of the Institutional Class and do not include the 0.15%
Shareholder Servicing Fee applicable to the Investment Class.

++ Represents an investment in the Adviser Class which commenced operations
11/7/96. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.25% 12b-1 Fee
applicable to the Adviser Class.

Total returns for the Investment and Adviser Classes of the Portfolio reflect
expenses reimbursed by the Adviser for certain periods. Without such
reimbursements, total returns would have been lower.

* Total returns are compared to the Salomon Broad Investment Grade Index, an
  unmanaged market index.





                                                                              19

<PAGE>   20

MAS Funds/Fixed Income


DOMESTIC FIXED INCOME PORTFOLIO


"... THE PORTFOLIO MAINTAINS HIGH AVERAGE CREDIT QUALITY AND INCLUDES A
SIGNIFICANT PORTION OF NONCALLABLE AND LONGER-MATURITY SECURITIES."


[PHOTO]


from left:
Rachel Klein and Jeffrey Alt



THE DOMESTIC FIXED INCOME PORTFOLIO invests only in dollar-denominated
fixed-income securities with a credit quality rating of BBB or better.
Fixed-income securities in this Portfolio include U.S. government bonds,
corporate bonds, mortgages, and other fixed-income securities. The Portfolio is
actively managed by Miller Anderson & Sherrerd's fixed-income team, which makes
strategic decisions about portfolio structure and composition.

    MAS has three major objectives for fixed-income investing. The first is to
provide investors a positive real return -- a total return including income and
capital gains that is greater than the rate of inflation. The second is to help
diversify equity-oriented strategies in other areas of clients' investment
programs. The third is to provide a hedge against a prolonged, severe economic
contraction. In order to provide this hedge, the Portfolio maintains high
average credit quality and includes a significant portion of noncallable and
longer-maturity securities. This positions the Portfolio to perform well when
other market sectors experience poor returns.

    There are four key decisions that the fixed-income team makes in building
the Portfolio. The first decision relates to the amount of interest-rate risk in
the Portfolio. Bond values generally increase when interest rates fall and
decrease when interest rates rise. Consequently, there are times when it is
better to bear more interest-rate risk than others. MAS bases the interest-rate
risk decision on the level of real interest rates and the steepness of the yield
curve, tempered by a strategic view about economic growth and the prospects for
inflation. When real rates are high and longer-maturity bonds have significantly
higher yields than short-term bonds, historically MAS has found it to be an
attractive time to have an above-benchmark level of interest-rate sensitivity.

    The second decision involves determining which maturities offer the best
value relative to their risk. The third decision relates to how much credit risk
the Portfolio should bear. MAS's research shows that a diversified approach
toward owning corporate bonds enhances overall portfolio returns. The Portfolio
purchases only those bonds that hold an investment grade rating.

    Finally, MAS actively manages the amount of prepayment risk, or call risk,
within the Portfolio. Most mortgages and some corporate bonds contain an option
to prepay the principal amount prior to maturity. As a result, these bonds have
higher yields, and MAS's fixed-income team calculates whether this additional
yield is sufficient to compensate for the embedded option risk.



20

<PAGE>   21


    While the Portfolio's long-term record reflects successful judgments about
these key decisions, the return on the Portfolio was 85 basis points behind its
benchmark over the past fiscal year in a difficult market environment. Yields on
U.S. Treasuries increased during this period due to improving global economic
conditions and renewed inflation fears. While high levels of real interest rates
justified the Portfolio's above-benchmark interest-rate risk strategy during the
1999 calendar year, this decision had an unfavorable effect on relative
performance due to the aforementioned rise in interest rates. Higher rates also
had an adverse impact on other fixed-income sectors, although most corporate and
mortgage-backed securities outperformed Treasuries during the period. The
decision to overweight these non-Treasury sectors had a favorable impact on the
Portfolio's relative returns. A modest yield-curve strategy, designed to benefit
from a narrowing of the yield spread between short- and long-maturities, had a
favorable effect on returns, and was eventually removed. A position in
inflation-indexed Treasuries (TIPS) also had a favorable impact on relative
performance, as these securities outperformed nominal Treasuries.


- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT OVER 10 YEARS
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
Fiscal Years Ending    MAS Funds Domestic
September 30           Fixed Income           Salomon Broad
<S>                    <C>                   <C>               <C>
89                      1000                   1000                9/30/89
                        1033                   1037               12/31/89
                        1015                   1029                3/31/90
                        1053                   1066                6/30/90
90                      1039                   1076                9/30/90
                        1108                   1131               12/31/90
                        1150                   1161                3/31/91
                        1170                   1182                6/30/91
91                      1257                   1249                9/30/91
                        1346                   1312               12/31/91
                        1316                   1297                3/31/92
                        1384                   1349                6/30/92
92                      1451                   1407                9/30/92
                        1469                   1411               12/31/92
                        1540                   1470                3/31/93
                        1596                   1511                6/30/93
93                      1655                   1551                9/30/93
                        1671                   1551               12/31/93
                        1636                   1508                3/31/94
                        1604                   1493                6/30/94
94                      1607                   1501                9/30/94
                        1606                   1507               12/31/94
                        1695                   1583                3/31/95
                        1798                   1680                6/30/95
95                      1838                   1712                9/30/95
                        1909                   1786               12/31/95
                        1873                   1755                3/31/96
                        1882                   1764                6/30/96
96                      1919                   1797                9/30/96
                        1983                   1851               12/31/96
                        1976                   1841                3/31/97
                        2048                   1908                6/30/97
97                      2115                   1971                9/30/97
                        2174                   2029               12/31/97
                        2203                   2062                3/31/98
                        2251                   2110                6/30/98
98                      2322                   2197                9/30/98
                        2331                   2206               12/31/98
                        2325                   2196                3/31/99
                        2286                   2175                6/30/99
99                      2296                   2191                9/30/99
</TABLE>



- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                          MAS Domestic Fixed Income
                     -----------------------------------
                                                                     Salomon
                     Institutional -          Adviser ++           Broad Index
- ------------------------------------------------------------------------------
<S>                  <C>                      <C>                  <C>
One Year                 (1.12)%                (1.30)%               (0.27)%
- ------------------------------------------------------------------------------
Five Years               7.39%                  7.35%                 7.86%
- ------------------------------------------------------------------------------
Ten Years                8.67%                  8.65%                 8.16%
- ------------------------------------------------------------------------------
</TABLE>


Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

++ Represents an investment in the Adviser Class which commenced operations
3/1/99. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.25% 12b-1 Fee
applicable to the Adviser Class.

Total returns for the Portfolio reflect expenses waived and/or reimbursed by the
Adviser for certain periods. Without such waivers and/or reimbursements, total
returns would have been lower.

On December 19, 1994, shareholders approved a change in the Portfolio's
investment policies to emphasize fixed-income securities of domestic issuers
rated A or higher. Shareholders then voted on May 1, 1997, to permit the
Portfolio to invest a limited portion of its assets in fixed-income securities
of domestic issuers rated BBB at the time of purchase. The Portfolio's
performance pattern may have been affected by these changes.

* Total returns are compared to the Salomon Broad Investment Grade Index, an
  unmanaged market index.




                                                                              21
<PAGE>   22



MAS Funds/Fixed Income


HIGH YIELD PORTFOLIO


[PHOTO]


from left:
Glenn Becker, Mary Jane Bobyock and Yuri Khalif

THE HIGH YIELD PORTFOLIO focuses on investments in below-investment grade
corporate bonds. The Portfolio is actively managed by Miller Anderson &
Sherrerd's high-yield fixed-income team, which is responsible for portfolio
construction and risk control. The high-yield team utilizes a disciplined, total
return-oriented investment process to actively manage diversified high-yield
portfolios. To identify the most efficient portfolio, the team engages in
fundamental analysis and valuation of high-yield securities. Individual
securities are compared on the basis of their option- and credit-risk-adjusted
expected returns. Several high-yield investment beliefs guide the process. MAS
believes that the keys to successful high-yield management are: superior,
forward-looking credit analysis; a consistent, disciplined investment process; a
value focus; and careful control of overall portfolio risk. The team manages
overall interest-rate risk and economic sensitivity, as well as the integration
of investment themes drawn from the firm's financial-market research.

    MAS believes that investments in high-yield securities can improve the
diversification of a balanced portfolio and raise return for a given level of
volatility. MAS's extensive research shows that investors have been rewarded
over time for holding lower-rated securities. High-yield securities also offer
investment opportunities overlooked in the traditional stock/bond mix. MAS's
goal is to achieve superior total returns with a greater degree of consistency
than the broad market averages and other investment managers.

    During the Portfolio's past fiscal year, its total return was 8.81% vs.
3.52% for the benchmark. This return is meaningful considering the interest rate
environment over the past twelve months. The rates of ten-year treasury bonds
rose nearly 150 basis points over the past year, while shorter rates rose almost
50 basis points.

    Performance exceeded the benchmark primarily because of an overweight
position in the telecommunications sector and exposure to emerging market
securities, both of which were strong performers during the past fiscal year.
The emerging market sector rebounded following the Russian crisis last year. The
Portfolio also benefited from merger and investment activity in the
telecommunications and cable sectors; this activity was very favorable for the
Portfolio's credit quality. In addition, the Portfolio did a much better job of
avoiding problem credits than the market averages. Negative contributors to
relative performance included an underweighting in the commodity and cyclical
sectors, which performed well, along with an overweight position in health care,
which underperformed.

    At fiscal year-end, the Portfolio continued to find value in the
telecommunications and emerging markets sectors. In telecommunications, one of
the Portfolio's largest holdings was Nextel Communications. Nextel's bonds
performed extremely well due to very strong operating results, an equity
investment by Microsoft, and takeover speculation. Other telecommunications
holdings during the year included Qwest, Rhythms



22

<PAGE>   23


Net, Level 3, Dolphin Telecom, and Global Crossing. All of these companies
either entered into a strategic partnership or raised additional equity capital,
which contributed to bond performance. In emerging markets, holdings were
concentrated in Latin America, with exposure mainly to corporate issues in
Mexico, Argentina, and Colombia.

    The Portfolio added to positions in some larger, higher-quality bonds,
including Columbia/HCA and Tenet Healthcare in the health care sector, and Kmart
in the retail sector. These sectors underperformed during fiscal 1999, and MAS
believed that these names had very good value. At fiscal year-end, the Portfolio
maintained an average credit quality of BB, which was higher than that of the
benchmark.


- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT OVER 10 YEARS
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
Fiscal Years Ending     MAS Funds         Salomon
September 30            High Yield      High Yield
<S>                    <C>             <C>            <C>

89                       1000            1000             9/30/89
                          934             983            12/31/89
                          906             953             3/31/90
                          960             991             6/30/90
90                        837             919             9/30/90
                          832             914            12/31/90
                         1039            1074             3/31/91
                         1101            1146             6/30/91
91                       1145            1214             9/30/91
                         1200            1279            12/31/91
                         1278            1374             3/31/92
                         1329            1428             6/30/92
92                       1402            1487             9/30/92
                         1422            1507            12/31/92
                         1547            1598             3/31/93
                         1630            1668             6/30/93
93                       1684            1707             9/30/93
                         1771            1769            12/31/93
                         1728            1732             3/31/94
                         1703            1724             6/30/94
94                       1744            1747             9/30/94
                         1646            1747            12/31/94
                         1717            1850             3/31/95
                         1899            1964             6/30/95
95                       1981            2023             9/30/95
                         2040            2091            12/31/95
                         2105            2125             3/31/96
                         2141            2152             6/30/96
96                       2255            2240             9/30/96
                         2352            2327            12/31/96
                         2385            2360             3/31/97
                         2550            2466             6/30/97
97                       2704            2573             9/30/97
                         2728            2635            12/31/97
                         2854            2742             3/31/98
                         2854            2770             6/30/98
98                       2672            2637             9/30/98
                         2814            2730            12/31/98
                         2910            2771             3/31/99
                         2925            2778             6/30/99
99                       2907            2730             9/30/99
</TABLE>


    The past fiscal year was a mixed period for the high-yield market, as
performance was strong throughout the first half, but receded during the last
few months. The U.S. government bond market had a very difficult year due to
high domestic growth and a tightening of interest rates by the Federal Reserve.
Technical factors also contributed to the recent negative performance in the
high-yield market. There was a high level of new issues in the market, net cash
flows into mutual funds turned negative, and dealers were under pressure to keep
inventories low. MAS believes that these factors created a good buying
opportunity for the Portfolio.

- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                                      MAS High Yield
                     -------------------------------------------------
                                                                            Salomon High
                     Institutional -       Investment +     Adviser ++       Yield Index
- ----------------------------------------------------------------------------------------
<S>                  <C>                   <C>              <C>             <C>
One Year                 8.81%                 8.67%            8.44%           3.52%
- ----------------------------------------------------------------------------------------
Five Years              10.76%                10.64%           10.62%           9.34%
- ----------------------------------------------------------------------------------------
Ten Years               11.26%                11.20%           11.19%          10.56%
- ----------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results. High-yield fixed-income securities,
otherwise known as "junk bonds," represent a much greater risk of default and
tend to be more volatile than higher-rated bonds.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

+ Represents an investment in the Investment Class which commenced operations
5/21/96. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.15% Shareholder
Servicing Fee applicable to the Investment Class.

++ Represents an investment in the Adviser Class which commenced operations
1/31/97. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.25% 12b-1 Fee
applicable to the Adviser Class.

Total returns for the Portfolio reflect expenses waived and/or reimbursed by the
Adviser for certain periods. Without such waivers and/or reimbursements, total
returns would have been lower.

* Total returns are compared to the Salomon High Yield Index, an unmanaged
  market index.

As of 9/30/99, the Portfolio's holdings in Nextel Communications, Qwest, Rhythms
Net, Level 3, Dolphin Telecom, Global Crossing, Columbia/HCA, Tenet Healthcare,
and Kmart were 2.4%, 0.0%, 0.5%, 0.0%, 0.7%, 0.9%, 3.8%, 2.1%, and 0.8%,
respectively.




                                                                              23

<PAGE>   24

MAS Funds/Fixed Income

CASH RESERVES PORTFOLIO


"THE PORTFOLIO IS MANAGED IN A CONSERVATIVE STYLE, GENERALLY WITHOUT THE USE OF
DERIVATIVES OR FUNDING AGREEMENTS."


[PHOTO]

from left:
Bill McCormick and Bill Lawrence




THE CASH RESERVES PORTFOLIO is a money-market fund whose primary objectives are
liquidity, preservation of capital, and high current income. The Portfolio is
managed in a conservative style, generally without the use of derivatives or
funding agreements. Investments are diversified across several fixed-income
sectors, and may include high quality commercial paper, negotiable certificates
of deposit, the bank notes of carefully selected, large depository institutions,
Federal agency obligations, and fully collateralized repurchase agreements.

    The Portfolio allocates assets and selects fixed-income maturities based on
an analysis of MAS's interest rate forecast and the shape of the money market
yield curve. This is an ongoing, in-depth analysis of economic and financial
developments, both national and international in scope. The Portfolio's average
maturity is gradually shortened or lengthened, depending upon several factors.
These include portfolio valuations, recent cash flow experiences and trends, and
the current and forecasted shape of the money market yield curve.

    Formal credit reviews and frequent monitoring of all investments are an
integral part of the Portfolio's management. While ratings by Nationally
Recognized Statistical Rating Organizations serve as the starting point for any
potential investment, the Portfolio looks well beyond these ratings as part of
its due diligence process. The team of portfolio managers and credit analysts
continuously reviews and reassesses the relative and absolute desirability of an
issuer's obligations.

    During the fall of 1998, the Federal Reserve's Federal Open Market Committee
(FOMC) made three separate 25 basis point cuts in its target for the federal
funds rate. These rate reductions contributed to a decline in money market
yields of roughly 75 basis points during the final three months of calendar
1998. The Federal Reserve's actions were motivated by a need to stabilize global
financial markets. These markets had suffered major shocks from Russia's
currency and debt crisis, and from the near-collapse of a large hedge fund.

    By the end of the first calendar quarter of 1999, the Federal Reserve was
faced with stabilizing overseas economies, tightening U.S. labor



24

<PAGE>   25


markets, and stronger consumer demand. In response, the Federal Reserve adopted
a bias toward higher short-term interest rates, citing concern over the
potential for a buildup in inflationary imbalances. The Federal Reserve then
acted on this concern at its June 30 meeting, raising the target federal funds
rate from 4.75% to 5.00%. At the August 24 FOMC meeting, the Federal Reserve
again raised its target federal funds rate by an additional 25 basis points, to
5.25%. This action was intended to further reverse the interest rate reductions
made during the fall of 1998.


- --------------------------------------------------------------------------------
GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
Fiscal Years Ending       MAS Funds         Lipper             Salomon
September 30            Cash Reserves    Money Market     1-Month Treasury
<S>                    <C>              <C>             <C>                     <C>
*                       1000             1000             1000                     8/29/90
90                      1007             1006             1006                     9/30/90
                        1027             1025             1023                    12/31/90
                        1044             1042             1037                     3/31/91
                        1059             1057             1050                     6/30/91
91                      1074             1071             1063                     9/30/91
                        1087             1084             1075                    12/31/91
                        1098             1094             1085                     3/31/92
                        1108             1104             1094                     6/30/92
92                      1117             1112             1102                     9/30/92
                        1125             1120             1110                    12/31/92
                        1132             1128             1117                     3/31/93
                        1140             1135             1125                     6/30/93
93                      1148             1142             1133                     9/30/93
                        1156             1150             1141                    12/31/93
                        1165             1157             1150                     3/31/94
                        1175             1166             1160                     6/30/94
94                      1187             1178             1171                     9/30/94
                        1202             1191             1184                    12/31/94
                        1219             1207             1198                     3/31/95
                        1236             1223             1215                     6/30/95
95                      1253             1239             1231                     9/30/95
                        1271             1255             1248                    12/31/95
                        1287             1270             1262                     3/31/96
                        1304             1284             1278                     6/30/96
96                      1320             1300             1293                     9/30/96
                        1337             1315             1309                    12/31/96
                        1354             1330             1325                     3/31/97
                        1372             1346             1341                     6/30/97
97                      1391             1363             1357                     9/30/97
                        1410             1380             1373                    12/31/97
                        1428             1396             1389                     3/31/98
                        1447             1413             1406                     6/30/98
98                      1467             1430             1423                     9/30/98
                        1485             1447             1436                    12/31/98
                        1503             1462             1451                     3/31/99
                        1520             1477             1467                     6/30/99
99                      1538             1493             1483                     9/30/99
</TABLE>


    At fiscal year-end, the Portfolio favored securities with maturities due
near upcoming FOMC meeting dates, and longer-term maturities with yields that
better reflected crossover year-end yield premiums. The Portfolio's weighted
average maturity was 65 days, and 70% of holdings were due to mature in less
than three months. The Portfolio was well positioned at this point for stability
of principal with a very high degree of liquidity.

- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                               MAS Cash Reserves
                       ---------------------------------
                                                                Lipper Money        Salomon 1-Month
                       Institutional -      Investment +       Market Average     Treasury Bill Index
- -----------------------------------------------------------------------------------------------------
<S>                     <C>                  <C>                <C>                <C>
One Year                 4.93%                 4.91%               4.40%                4.24%
- -----------------------------------------------------------------------------------------------------
Five Years               5.33%                 5.32%               4.86%                4.84%
- -----------------------------------------------------------------------------------------------------
Since Inception          4.85%                 4.85%               4.51%                4.43%
- -----------------------------------------------------------------------------------------------------
7-Day Effective Yield    5.23%                 5.07%                 NA                   NA
- -----------------------------------------------------------------------------------------------------
SEC 7-Day Current Yield  5.13%                 4.98%                 NA                   NA
- -----------------------------------------------------------------------------------------------------
</TABLE>


Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The SEC 7-day yield quotation more closely reflects the current earnings of the
Portfolio than the total return quotation. You may obtain the Portfolio's
current SEC 7-day yield by calling 1-800-354-8185.

- - Represents an investment in the Institutional Class.

+ Represents an investment in the Investment Class which commenced operations
8/16/99. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.15% Shareholder
Servicing Fee applicable to the Investment Class. It is expected that, over
time, returns for the Investment Class will be lower than for the Institutional
Class due to the higher expenses charged.

Total returns for the Portfolio reflect expenses waived and/or reimbursed by the
Adviser for certain periods. Without such waivers and/or reimbursements, total
returns would have be lower.

An investment in the Fund is not insured or guaranteed by the Federal Deposit
Insurance Corporation or any other government agency. Although the Fund seeks to
preserve the value of your investment at $1.00 per share, it is possible to lose
money by investing in the Fund.

* The Cash Reserves Portfolio commenced operations on 8/29/90. Total returns are
  compared to the Lipper Money Market Average of money market funds and the
  Salomon 1-Month Treasury Bill Index. While the Portfolio may invest in the
  government securities represented by the Salomon 1-Month Treasury Bill Index,
  it also invests in non-government issues and securities with maturities
  greater than one month.


                                                                              25
<PAGE>   26
MAS Funds/Fixed Income

FIXED
 INCOME II
PORTFOLIO

"The Portfolio purchases
only those bonds that
hold an investment
grade rating."

[PHOTO]
from left:
Barry Siegel, Kurt Dodds
and Matt Potter

THE FIXED INCOME II PORTFOLIO invests only in fixed-income securities with a
credit-quality rating of BBB or better. Securities in this Portfolio include
U.S. government bonds, corporate bonds, mortgages, non-dollar bonds, and other
fixed-income securities. The Portfolio is actively managed by Miller Anderson &
Sherrerd's fixed-income team, which makes strategic decisions about its
structure and composition.

   MAS has three major objectives for fixed-income investing. The first is to
provide investors a positive real return -- a total return including income and
capital gains that is greater than the rate of inflation. The second is to help
diversify equity-oriented strategies in other areas of clients' investment
programs. The third is to provide a hedge against a prolonged, severe economic
contraction. In order to provide this hedge, the Portfolio maintains high
average credit quality and includes a significant portion of noncallable and
longer-maturity securities. This positions the Portfolio to perform well when
other market sectors experience poor returns.

   There are five key decisions that the fixed-income team makes in building the
Portfolio. The first decision relates to the amount of interest-rate risk in the
Portfolio. Bond values generally increase when interest rates fall and decrease
when interest rates rise. Consequently, there are times when it is better to
bear more interest-rate risk than others. MAS bases the interest-rate risk
decision on the level of real interest rates and the steepness of the yield
curve, tempered by a strategic view about economic growth and the prospects for
inflation. When real rates are high and longer-maturity bonds have significantly
higher yields than short-term bonds, historically MAS has found it to be an
attractive time to have an above-benchmark level of interest-rate sensitivity.

   The second decision involves determining which maturities offer the best
value relative to their risk. Third, the team considers which fixed-income
markets around the world offer the best value, on an opportunistic basis;
relative real interest rates, the steepness of U.S. and foreign yield curves,
and judgments about currency values drive this decision. The fourth decision
relates to how much credit risk the Portfolio should bear. MAS's research shows
that a diversified approach toward owning corporate bonds enhances overall
portfolio returns. The Portfolio purchases only those bonds that hold an
investment grade rating.


26
<PAGE>   27
   Finally, MAS actively manages the amount of prepayment risk, or call risk,
within the Portfolio. Most mortgages and some corporate bonds contain an option
to prepay the principal amount prior to maturity. As a result, these bonds have
higher yields, and the fixed-income team calculates whether this additional
yield is sufficient to compensate for the embedded option risk.

   While the Portfolio's long-term record reflects successful judgments about
these key decisions, the return on the Portfolio was 30 basis points behind its
benchmark over the past fiscal year in a difficult market environment. Yields on
U.S. Treasuries increased during this period due to improving global economic
conditions and renewed inflation fears. While high levels of real interest rates
justified the Portfolio's above-benchmark interest-rate risk strategy during the
1999 calendar year, this decision had an unfavorable effect on relative
performance due to the aforementioned rise in interest rates. Higher rates also
had an adverse impact on other fixed-income sectors, yet most corporate and
mortgage-backed securities outperformed Treasuries during the period. The
decision to overweight these non-Treasury sectors, including yankee issues, had
a favorable impact on the Portfolio's relative returns. A modest yield-curve
strategy, designed to benefit from a narrowing of the yield spread between
short- and long-maturities, had a favorable effect on returns, and was
eventually removed. A position in inflation-indexed Treasuries (TIPS) also had a
favorable impact on relative performance, as these securities outperformed
nominal Treasuries. The allocation to foreign bonds was zero for the entire
fiscal year, as it remained difficult to identify superior opportunities among
high-quality non-dollar securities.


GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                        MAS Funds
                    Fixed Income II  Salomon Broad
                            (Dollars 000)
<S>                 <C>              <C>
*       8/31/90         1000            1000
90      9/30/90         1009            1009
        12/31/90        1082            1060
        3/31/91         1109            1088
        6/30/91         1121            1107
91      9/30/91         1206            1170
        12/31/91        1291            1229
        3/31/92         1255            1215
        6/30/92         1312            1264
92      9/30/92         1364            1319
        12/31/92        1382            1322
        3/31/93         1443            1378
        6/30/93         1494            1416
93      9/30/93         1548            1453
        12/31/93        1556            1454
        3/31/94         1514            1413
        6/30/94         1476            1399
94      9/30/94         1474            1407
        12/31/94        1476            1412
        3/31/95         1555            1484
        6/30/95         1643            1574
95      9/30/95         1683            1604
        12/31/95        1752            1674
        3/31/96         1733            1645
        6/30/96         1747            1653
96      9/30/96         1786            1684
        12/31/96        1849            1734
        3/31/97         1844            1725
        6/30/97         1911            1788
97      9/30/97         1975            1847
        12/31/97        2020            1902
        3/31/98         2051            1932
        6/30/98         2089            1977
98      9/30/98         2157            2059
        12/31/98        2173            2067
        3/31/99         2173            2058
        6/30/99         2139            2039
99      9/30/99         2145            2053

</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
                                            MAS Fixed                                 Salomon
                                            Income II                               Broad Index
- -----------------------------------------------------------------------------------------------------
<S>                                         <C>                                     <C>
One Year                                     (0.57)%                                  (0.27)%
- -----------------------------------------------------------------------------------------------------
Five Years                                    7.78%                                    7.86%
- -----------------------------------------------------------------------------------------------------
Since Inception                               8.76%                                    8.24%
- -----------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

On May 12, 1997, shareholders approved a change in the Portfolio's investment
policies to allow the Portfolio to invest in fixed-income securities of
domestic issuers rated BBB or higher at the time of purchase. The Portfolio's
performance pattern may have been affected by this change.

* The Fixed Income II Portfolio commenced operations on 8/31/90. Total returns
  are compared to the Salomon Broad Investment Grade Index, an unmanaged market
  index.


                                                                             27
<PAGE>   28
MAS Funds/Fixed Income

LIMITED DURATION
PORTFOLIO

[PHOTO]
from left:
Marc Balcer, Susan Mislick and Brian Drummond

THE LIMITED DURATION PORTFOLIO invests in dollar-denominated bonds and maintains
a short duration. The Portfolio aims to generate attractive fixed income returns
without the volatility that accompanies a longer duration portfolio. It is
ideally suited for assets for which liquidity and principal protection over a
one-year horizon are primary goals.

   The benchmark for the Portfolio is the Salomon 1-3 Year Treasury and
Government Sponsored Index. This Index has a relatively low volatility of
returns due to its low sensitivity to changes in interest rates (as approximated
by duration). The duration of the Index is usually less than two years;
therefore, for a 1% increase in interest rates, the Index is expected to lose
less than 2% of its value. Typically, this potential for loss is more than
offset by the yield, so that there are rarely negative total returns over any
twelve-month period. The goal of the Portfolio is to achieve returns in excess
of the Index without significantly higher volatility.

   Value and risk control drive the Portfolio's investment decisions. The
Portfolio is diversified across market sectors and issues, and is constrained
within a range of one to three years of duration, to an average credit quality
of AA or better (with all securities being of investment grade), and to
dollar-denominated bonds only.

   The portfolio management team relies on the investment research and expertise
of individual sector teams, which focus on four key elements of portfolio
structure and composition: interest-rate strategy, yield-curve positioning,
credit risk, and prepayment sensitivity.

   Interest-rate strategy determines the Portfolio's overall sensitivity to
changes in interest rates. The duration decision is based on the value of extra
duration as measured by the steepness of the yield curve and the level of real
rates; it is not based on an internal forecast of the short-term direction of
interest rates or Federal Reserve policy.

   MAS continually studies yield-curve positioning to determine the points along
the curve (maturities) where securities offer the most value. MAS targets the
Portfolio's investments to the area of the curve that provides the most value,
taking into account expected future changes in the shape of the yield curve.

   Bearing credit risk often offers financial rewards beyond expected losses due
to defaults. Therefore, the Portfolio will typically invest a portion of its
assets in corporate bonds. In order to limit exposure to losses from defaults,
the Portfolio's exposure to an individual company's debt is generally limited to
1%.

   Finally, the Portfolio's prepayment sensitivity stems from its positions in
mortgage-backed securities. The mortgage market represents one of the deepest
and most liquid sectors of the fixed-income universe, and MAS's research shows
that investors are often well compensated for assuming call risk. The aim is to
increase the Portfolio's prepayment sensitivity when the market offers adequate
compensation for doing so, and to ensure that the call risk inherent in those
positions is adequately hedged.

   For fiscal 1999, the Limited Duration Portfolio returned 3.61%, or 32 basis
points more than its benchmark. The


28
<PAGE>   29

Portfolio's outperformance resulted primarily from the extra yield earned by
allocating a significant portion of the portfolio to corporate, asset-backed,
and mortgage-backed securities. Spreads began the fourth quarter of 1998 at
very wide levels, and despite some volatility, they closed the fiscal year at
similarly high levels. Some additional value was added by reducing the
Portfolio's mortgage allocation when mortgage option-adjusted spreads tightened
in the spring. The mortgage allocation was subsequently increased as spreads
widened again. The Portfolio ended the fiscal year almost completely invested
in corporates, asset-backeds, and mortgages, with allocations of approximately
36%, 22%, and 40%, respectively.

   The Portfolio's interest rate strategy also helped performance through the
first half of the fiscal year. At the beginning of this period, the yield curve
was very flat, and real rates were not excessively high. This represented a lack
of bond value (i.e., investors were not paid to bear extra interest rate risk).
The Portfolio was therefore positioned with a shorter duration than the Index.
As interest rates rose, this lower sensitivity helped the Portfolio to
outperform the Index. Interest rates continued to rise through the spring and
summer of 1999, at which point MAS's value measures indicated that having extra
interest rate risk was desirable. At fiscal year-end, the Portfolio's duration
was 4/10ths of a year longer than that of the Index.

   In addition, approximately 11% of the Portfolio was allocated to
Treasury-Inflation-Protected Securities at the beginning of the fiscal year.
These securities outperformed as interest rates rose and the market priced
expectations of rising rather than falling inflation. By fiscal year-end, these
securities had been sold, since they no longer represented attractive value
relative to other non-Treasury securities.

GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                        MAS
                   Limited Duration     Salomon 1-3 Year
                                (Dollars 000)
<S>      <C>       <C>                  <C>
*        3/31/92        1000                    1000
         6/30/92        1034                    1029
92       9/30/92        1069                    1059
         12/31/92       1068                    1061
         3/31/93        1097                    1084
         6/30/93        1110                    1097
93       9/30/93        1126                    1112
         12/31/93       1131                    1119
         3/31/94        1121                    1113
         6/30/94        1119                    1114
94       9/30/94        1131                    1124
         12/31/94       1131                    1125
         3/31/95        1167                    1162
         6/30/95        1202                    1198
95       9/30/95        1220                    1216
         12/31/95       1248                    1245
         3/31/96        1255                    1251
         6/30/96        1266                    1264
96       9/30/96        1287                    1285
         12/31/96       1314                    1309
         3/31/97        1324                    1318
         6/30/97        1352                    1347
97       9/30/97        1377                    1373
         12/31/97       1396                    1396
         3/31/98        1416                    1416
         6/30/98        1434                    1438
98       9/30/98        1461                    1481
         12/31/98       1474                    1493
         3/31/99        1497                    1503
         6/30/99        1497                    1511
99       9/30/99        1514                    1530
</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
                                           MAS Limited                                Salomon
                                            Duration                              1-3 Year Index
- -----------------------------------------------------------------------------------------------------
<S>                                        <C>                                    <C>
One Year                                      3.61%                                    3.29%
- -----------------------------------------------------------------------------------------------------
Five Years                                    6.02%                                    6.36%
- -----------------------------------------------------------------------------------------------------
Since Inception                               5.69%                                    5.83%
- -----------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

Total returns for the Portfolio reflect expenses waived and/or reimbursed by
the Adviser for certain periods. Without such waivers and/or reimbursements,
total returns would have been lower.

* The Limited Duration Portfolio commenced operations on 3/31/92. Total returns
  are compared to the Salomon 1-3 Year Treasury/Government Sponsored Index, an
  unmanaged market index.


                                                                             29
<PAGE>   30
MAS Funds/Fixed Income

SPECIAL PURPOSE
 FIXED INCOME
PORTFOLIO

"The Portfolio's long-term
record reflects successful
judgments about these key
decisions."

[PHOTO]
from left:
Mary Ann Milias,
Bob Formisano and
Debbie Tickler

THE SPECIAL PURPOSE FIXED INCOME PORTFOLIO is designed specially for use as part
of a balanced investment program. Fixed-income securities in this Portfolio
include U.S. government bonds, corporate bonds, mortgages, non-dollar bonds, and
other fixed-income securities. The Portfolio is actively managed by Miller
Anderson & Sherrerd's fixed-income team, which makes strategic decisions about
portfolio structure and composition in a way that complements the equity portion
of a balanced account.

   MAS has three major objectives for fixed-income investing. The first is to
provide investors a positive real return -- a total return including income and
capital gains that is greater than the rate of inflation. The second is to help
diversify equity-oriented strategies in other areas of clients' investment
programs. The third is to provide a hedge against a prolonged, severe economic
contraction. In order to provide this hedge, the Portfolio maintains high
average credit quality and includes a significant portion of noncallable and
longer-maturity securities. This positions the Portfolio to perform well when
other market sectors experience poor returns.

   There are five key decisions that the fixed-income team makes in building the
Portfolio. The first decision relates to the amount of interest-rate risk in the
Portfolio. Bond values generally increase when interest rates fall and decrease
when interest rates rise. Consequently, there are times when it is better to
bear more interest-rate risk than others. MAS bases the interest-rate risk
decision on the level of real interest rates and the steepness of the yield
curve, tempered by views about economic growth and the prospects for inflation.
When real rates are high and longer-maturity bonds have significantly higher
yields than short-term bonds, historically MAS has found it to be an attractive
time to have an above-benchmark level of interest-rate sensitivity.

   The second decision involves determining which maturities offer the best
value relative to their risk. Third, the team considers which fixed-income
markets around the world offer the best value, on an opportunistic basis;
relative real interest rates, the steepness of U.S. and foreign yield curves,
and judgments about currency values drive this decision. The fourth decision
relates to how much credit risk the Portfolio should bear. MAS's research shows
that a diversified approach toward owning corporate bonds enhances overall
portfolio returns. The Portfolio includes a limited number of
opportunistically-selected bonds that are rated below investment grade.

   Finally, MAS actively manages the amount of prepayment risk, or call risk,
within the Portfolio. Most mortgages and some corporate bonds contain an option
to prepay the principal amount


30
<PAGE>   31
prior to maturity. As a result, these bonds have higher yields, and the
fixed-income team calculates whether this additional yield is sufficient to
compensate for the embedded option risk.

   The Portfolio's long-term record reflects successful judgments about these
key decisions. Despite a difficult market environment during the past fiscal
year, the Portfolio outperformed its benchmark by 98 basis points. Yields on
U.S. Treasuries increased during this period due to improving global economic
conditions and renewed inflation fears. While high levels of real interest rates
justified the Portfolio's above-benchmark interest-rate risk strategy during the
1999 calendar year, this decision had an unfavorable effect on relative
performance due to the aforementioned rise in interest rates. Higher rates also
had an adverse impact on other fixed-income sectors, yet most corporate and
mortgage-backed securities outperformed Treasuries during the period. The
decision to overweight these non-Treasury sectors, especially yankee issues, and
an opportunistic allocation to below investment-grade securities, had a very
favorable impact on the Portfolio's relative returns. A modest yield-curve
strategy, designed to benefit from a narrowing of the yield spread between
short- and long-maturities, had a favorable effect on returns, and was
eventually removed. A position in inflation-indexed Treasuries (TIPS) also had a
favorable impact on relative performance, as these securities outperformed
nominal Treasuries. The allocation to foreign bonds was zero for the entire
fiscal year, as it remained difficult to identify superior opportunities among
high-quality non-dollar securities.

GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                            MAS
                    Special Purpose Fixed Income    Salomon Broad
                                       (Dollars 000)
<S>    <C>          <C>                             <C>
*      3/31/92              1000                        1000
       6/30/92              1048                        1041
92     9/30/92              1095                        1085
       12/31/92             1110                        1088
       3/31/93              1169                        1134
       6/30/93              1214                        1165
93     9/30/93              1261                        1196
       12/31/93             1275                        1196
       3/31/94              1240                        1163
       6/30/94              1208                        1151
94     9/30/94              1211                        1158
       12/31/94             1211                        1162
       3/31/95              1275                        1221
       6/30/95              1349                        1296
95     9/30/95              1392                        1320
       12/31/95             1449                        1378
       3/31/96              1446                        1354
       6/30/96              1464                        1360
96     9/30/96              1500                        1386
       12/31/96             1557                        1427
       3/31/97              1558                        1420
       6/30/97              1622                        1471
97     9/30/97              1676                        1520
       12/31/97             1713                        1565
       3/31/98              1740                        1590
       6/30/98              1768                        1627
98     9/30/98              1799                        1694
       12/31/98             1821                        1701
       3/31/99              1829                        1693
       6/30/99              1804                        1678
99     9/30/99              1810                        1690
</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
                                       MAS Special Purpose                            Salomon
                                          Fixed Income                              Broad Index
- -----------------------------------------------------------------------------------------------------
<S>                                    <C>                                          <C>
One Year                                      0.71%                                   (0.27)%
- -----------------------------------------------------------------------------------------------------
Five Years                                    8.39%                                    7.86%
- -----------------------------------------------------------------------------------------------------
Since Inception                               8.24%                                    7.25%
- -----------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

* The Special Purpose Fixed Income Portfolio commenced operations on 3/31/92.
  Total returns are compared to the Salomon Broad Investment Grade Index, an
  unmanaged market index.


                                                                             31
<PAGE>   32
MAS Funds/Fixed Income

MUNICIPAL
 PORTFOLIO

"... MAS views the munici-
pal market as just one of
many alternatives for help-
ing clients achieve the goal
of maximizing after-tax
returns, consistent with a
reasonable level of risk."

[PHOTO]
from left:
Jeanie Krepfle, Mark Babiec
and Brian Towsen

THE MUNICIPAL PORTFOLIO invests primarily in tax-exempt municipal debt
obligations issued by state and local governments or their agencies. The
Portfolio will also invest selectively in taxable fixed-income securities.
Normally, at least 80% of the Portfolio's income will be exempt from regular
federal income tax. The Portfolio is managed by the MAS tax-advantaged
fixed-income team. This team works closely with the MAS interest rate team to
determine the interest rate and yield curve exposure for the Portfolio. The
tax-advantaged team also works closely with the MAS fixed-income value teams to
determine sector allocation and security selection for the Portfolio. The
objective of the Portfolio is to maximize after-tax total return consistent with
the preservation of capital, while providing investors with deflation
protection.

   The investment philosophy is consistent with that of the other MAS
fixed-income products. As research-based, value-driven investors, MAS does
extensive research to identify objective measures of value that have proven to
be reliable over long periods of time. Consequently, MAS does not attempt to
forecast markets. Instead, MAS is disciplined in applying these value measures
to making investment decisions. An important part of the MAS philosophy is
utilizing research which shows that taxable investors are sometimes better
served by investments in taxable bonds. Thus, MAS views the municipal market as
just one of many alternatives for helping clients achieve the goal of maximizing
after-tax returns, consistent with a reasonable level of risk.

   The investment process consists of three major stages. First, the appropriate
level of interest rate sensitivity relative to the benchmark is established
using the same value measures--the level of real interest rates and the shape of
the yield curve--that are used for all of the MAS fixed-income portfolios. Next,
MAS examines the relative value offered by the various sectors of the bond
market to determine the most attractive sector allocation. In particular, MAS
attempts to add value by actively managing sector exposures based on the
prospects for the municipal market, relative to the taxable markets. The final
stage is to determine the mix of securities that will provide the most
attractive performance. Security selection involves adjustment of promised
yields for tax considerations, credit risk, and prepayment or call risk. In
general, capital gains are realized only when the prospective returns of bonds
purchased will offset the tax on any gains, and still provide excess value to
the overall Portfolio.

   For the past fiscal year, the performance of the Municipal Portfolio lagged
the benchmark by 43 basis points.

32
<PAGE>   33
Interest-rate risk management had the largest negative impact on returns. The
interest rate sensitivity of the Portfolio was materially longer than that of
the benchmark as interest rates rose. Early in the year, the Portfolio
benefited handsomely as municipal bonds outperformed Treasury securities.
Exposure to taxable bonds also had a positive impact on results early in the
year. More recently, greater-than-index duration exposure to municipal bonds
and holdings of taxable bonds, primarily agency mortgages and investment grade
corporate bonds, detracted from relative performance.

   MAS's primary value measure, the level of real interest rates, signaled
attractive value in the bond market. Consequently, the interest rate sensitivity
of the Portfolio remained longer than that of the benchmark at fiscal year-end.
In addition, MAS believed that a vigilant Federal Reserve would keep actual
inflation within a range well below what was then priced into the yield curve.
After a period of underperformance, prices of municipal bonds relative to
Treasuries were below fair value. In addition, high quality taxable bonds were
priced at historically low levels. These securities comprised an important
portion of the Portfolio, because expected returns on an after-tax and
risk-adjusted basis were attractive. The Portfolio Management team believed that
the recent weakness in the non-Treasury sectors of the bond market had been
driven primarily by technical factors, and MAS's research indicated that the
fundamentals remained strong. Accordingly, the Portfolio was positioned to take
advantage of the attractive value that MAS believed existed. At fiscal year-end,
the Portfolio maintained a very high average credit quality and a high degree of
call protection.

GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                     MAS Funds
                     Municipal      Lehman 5 Year Municipal    Lehman 10 Year Municipal        Blended Municipal Index
<S>     <C>          <C>            <C>                        <C>                             <C>
*       10/1/92         1000                 1000                         1000                             1000
        12/31/92        1016                 1014                         1020                             1024
        3/31/93         1061                 1041                         1059                             1069
        6/30/93         1103                 1065                         1094                             1113
93      9/30/93         1142                 1090                         1134                             1158
        12/31/93        1162                 1103                         1150                             1175
        3/31/94         1077                 1072                         1089                             1081
        6/30/94         1083                 1083                         1105                             1089
94      9/30/94         1089                 1094                         1113                             1093
        12/31/94        1089                 1089                         1095                             1068
        3/31/95         1186                 1133                         1171                             1175
        6/30/95         1180                 1163                         1202                             1201
95      9/30/95         1235                 1191                         1244                             1234
        12/31/95        1306                 1216                         1283                             1317
        3/31/96         1300                 1216                         1275                             1283
        6/30/96         1317                 1222                         1279                             1288
96      9/30/96         1351                 1243                         1304                             1312
        12/31/96        1379                 1267                         1341                             1343
        3/31/97         1383                 1267                         1341                             1343
        6/30/97         1426                 1298                         1385                             1381
97      9/30/97         1466                 1325                         1428                             1418
        12/31/97        1499                 1348                         1465                             1448
        3/31/98         1518                 1364                         1480                             1464
        6/30/98         1539                 1379                         1503                             1483
98      9/30/98         1571                 1415                         1554                             1528
        12/31/98        1586                 1427                         1564                             1539
        3/31/99         1617                 1442                         1573                             1551
        6/30/99         1580                 1424                         1537                             1524
99      9/30/99         1573                 1437                         1547                             1536
</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
                     MAS             Lehman 5 Year       Lehman 10 Year          Blended
                  Municipal         Municipal Index      Municipal Index     Municipal Index
- -----------------------------------------------------------------------------------------------------
<S>               <C>               <C>                  <C>                 <C>
One Year            0.11%                1.55%                (0.46)%             0.54%
- -----------------------------------------------------------------------------------------------------
Five Years          7.64%                5.61%                6.81%               7.04%
- -----------------------------------------------------------------------------------------------------
Since Inception     6.69%                5.32%                6.44%               6.33%
- -----------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

Total returns for the Portfolio reflect expenses waived and/or reimbursed by
the Adviser for certain periods. Without such waivers and/or reimbursements,
total returns would have been lower.

The Portfolio was initially focused on long-term securities. On April 15, 1996,
shareholders approved a change in the Portfolio's investment policies to
emphasize fixed-income securities of shorter duration. On October 2, 1998,
shareholders approved a change in the Portfolio's investment policies to
specify that generally at least 80% of its income will be exempt from regular
federal income tax. The Portfolio's performance pattern may have been affected
by these changes.

* The Municipal Portfolio commenced operations on 10/1/92. Total returns are
  compared to the Lehman 5 Year Municipal Index and the Lehman 10 Year Municipal
  Index, both unmanaged market indices, as well as the Blended Municipal Index,
  an unmanaged index comprised of the Lehman Long Municipal Index from 10/1/92
  to 3/31/96 and 50% Lehman 10 Year Municipal Index and 50% Lehman 5 Year
  Municipal Index thereafter.


                                                                             33
<PAGE>   34
MAS Funds/Fixed Income

GLOBAL FIXED
 INCOME PORTFOLIO

[PHOTO]
from left:
Richard Pagnoni,
Deborah Newborn and
Stacy Tomczak

THE GLOBAL FIXED INCOME PORTFOLIO invests primarily in high-grade fixed-income
securities throughout the world, normally fluctuating around a neutral position
of approximately two-thirds foreign bonds and one-third U.S. securities.
Fixed-income securities in the U.S. portion of this Portfolio include U.S.
government bonds, corporate bonds, mortgages, and other fixed-income securities.
The non-dollar portion of the Portfolio may include a wide variety of
fixed-income securities, but tends to consist largely of securities issued by
foreign governments and supranational organizations such as the World Bank. The
Portfolio is actively managed by Miller Anderson & Sherrerd's global
fixed-income team, which makes strategic decisions concerning portfolio
structure and composition.

   The MAS global fixed-income team makes five key decisions when building the
Portfolio. The first decision relates to the amount of interest-rate risk in the
Portfolio. Bond values generally increase when interest rates fall and decrease
when rates rise. Consequently, there are better times to bear interest-rate risk
than others. MAS bases the interest-rate decision on the level of real interest
rates and the steepness of the yield curve in bond markets throughout the world.
When real interest rates are high and longer-maturity bonds have significantly
higher yields than short-term bonds, historically that has been an attractive
time to invest in fixed-income securities with longer-than-average maturities.

   The second key decision is the choice of fixed-income markets throughout the
world in which the Portfolio will invest. MAS bases this decision on comparisons
of real interest rates and yield-curve slopes across fixed-income markets.
Historically, it has been advantageous to invest in countries that offer higher
real interest rates than those available in other countries. Since the best bond
markets do not necessarily correspond to the best currency markets, MAS
separates the bond decision from the third key decision of currency management.
MAS manages currency exposures actively, and the Portfolio hedges (at least in
part) those currencies that are judged to be overvalued and in danger of
weakening.

   The fourth and fifth decisions relate to the Portfolio's level of credit and
prepayment risk. Although interest-rate, country, and currency decisions have
typically had the largest effect on performance, MAS's research shows that
bearing credit risk often offers financial rewards and that a diversified
approach to credit risk adds to overall portfolio returns. Similarly, MAS
actively manages the amount of prepayment or call risk in the Portfolio. Many
corporate bonds and most mortgages contain an option to prepay the principal
amount prior to maturity. As a result, these bonds generally offer higher
yields, and the global fixed-income team calculates whether this additional
yield is sufficient to compensate for the embedded prepayment-option risk. Most
corporate and mortgage securities are issued in the United States, which offers
the deepest and most liquid corporate and mortgage markets in the world.
However, the Portfolio will also invest in foreign or non-dollar corporate and
mortgage securities when values are attractive.

   The Portfolio's return lagged that of its benchmark over the past fiscal
year. Currency positioning was the primary source of underperformance. Exposures


34
<PAGE>   35
to interest rate risk and corporate bonds led to quarterly volatility of
relative returns, but had only a small net impact on performance.

   A noteworthy strategic position in the Portfolio was a below-benchmark
exposure to the Japanese yen. The yen was viewed as comparatively unattractive
because of the structural problems of the Japanese economy and the historically
low level of interest rates there. The yen appreciated sharply, however, during
the year, more than accounting for the Portfolio's return gap versus the
benchmark.

   Other currency positions relative to the benchmark contributed to
performance. Late in 1998, the Portfolio took on small exposures to the Canadian
and Australian dollars; these two currencies had fallen to very competitive
levels and were well placed to benefit from a recovery in the prices of
internationally traded commodities. Both currencies appreciated in the first
half of 1999, benefiting the Portfolio.

   The most significant interest rate decision in the Portfolio was a
below-market exposure to Japanese bonds, which offered very low real yields.
This underweighting was offset by higher exposures to U.S. and European bonds,
whose real yields were much more attractive. This decision added significantly
to relative returns late in 1998 as Japanese government bonds sold off sharply.
Rising bond yields in Europe and the dollar-bloc markets eroded some of these
gains, however, limiting the net impact of interest rate decisions on Portfolio
returns over the entire fiscal year.

   The Portfolio maintained a significant, well-diversified, above-benchmark
exposure to corporate bonds, which offered an unusually large yield premium over
government debt. This yield premium was volatile during the year but showed
little net change. The Portfolio benefited primarily from the higher interest
margin earned, which added to relative performance.

GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                        MAS Funds
                   Global Fixed Income    Salomon World Gov't Bond
<S>   <C>          <C>                    <C>
*     4/30/93           1000                       1000
      6/30/93           1022                       1008
93    9/30/93           1074                       1053
      12/31/93          1090                       1053
      3/31/94           1075                       1053
      6/30/94           1057                       1060
94    9/30/94           1071                       1072
      12/31/94          1073                       1078
      3/31/95           1159                       1196
      6/30/95           1227                       1259
95    9/30/95           1238                       1246
      12/31/95          1287                       1283
      3/31/96           1271                       1259
      6/30/96           1290                       1264
96    9/30/96           1322                       1299
      12/31/96          1365                       1329
      3/31/97           1309                       1274
      6/30/97           1347                       1313
97    9/30/97           1369                       1330
      12/31/97          1365                       1333
      3/31/98           1385                       1343
      6/30/98           1409                       1370
98    9/30/98           1495                       1484
      12/31/98          1557                       1536
      3/31/99           1507                       1477
      6/30/99           1452                       1426
99    9/30/99           1494                       1491
</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
                                            MAS Global                            Salomon World
                                           Fixed Income                         Gov't Bond Index
- -----------------------------------------------------------------------------------------------------
<S>                                        <C>                                  <C>
One Year                                      (0.05%)                                 0.48%
- -----------------------------------------------------------------------------------------------------
Five Years                                     6.88%                                  6.81%
- -----------------------------------------------------------------------------------------------------
Since Inception                                6.45%                                  6.42%
- -----------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results. Foreign investments are subject to
certain risks such as currency fluctuations, economic instability, and
political developments.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

Total returns for the Portfolio reflect expenses waived
and/or reimbursed by the Adviser for certain periods. Without such waivers
and/or reimbursements, total returns would have been lower.

* The Global Fixed Income Portfolio commenced operations on 4/30/93. Total
  returns are compared to the Salomon World Government Bond Index, an unmanaged
  market index.

                                                                             35
<PAGE>   36
MAS Funds/Fixed Income

INTERNATIONAL FIXED
 INCOME PORTFOLIO

[PHOTO]
from left:
Nannette de Groot,
Ken Tollmann and
PaM Levesque

THE INTERNATIONAL FIXED INCOME PORTFOLIO invests primarily in high-grade
fixed-income securities, using a benchmark that is 100 percent invested in
foreign bonds. Most investments consist of securities issued by governments and
supranational organizations such as the World Bank, although the Portfolio will
also hold corporate bonds, mortgages, and other fixed-income securities. The
Portfolio will also invest to a limited extent in U.S. securities when the U.S.
fixed-income market is more attractive than foreign markets. The Portfolio is
actively managed by Miller Anderson & Sherrerd's global fixed-income team, which
makes strategic decisions concerning portfolio structure and composition.

   The MAS global fixed-income team makes five key decisions in building the
Portfolio. The first decision relates to the amount of interest-rate risk in the
Portfolio. Bond values generally increase when interest rates fall and decrease
when rates rise. Consequently, there are better times to bear interest-rate risk
than others. MAS bases the interest-rate decision on the level of real interest
rates and the steepness of the yield curve in bond markets throughout the world.
When real interest rates are high and longer-maturity bonds have significantly
higher yields than short-term bonds, historically that has been an attractive
time to invest in fixed-income securities with longer-than-average maturities.

   The second key decision is the choice of fixed-income markets throughout the
world in which the Portfolio will invest. MAS bases this decision on comparisons
of real interest rates and yield-curve slopes across fixed-income markets.
Historically it has been advantageous to invest in countries that offer higher
real interest rates than those available in other countries. Since the best bond
markets do not necessarily correspond to the best currency markets, MAS
separates the bond decision from the third key decision of currency management.
MAS manages currency exposures actively, and the Portfolio hedges (at least in
part) those currencies that are judged to be overvalued and in danger of
weakening.

   The fourth and fifth decisions relate to the Portfolio's level of credit and
prepayment risk. Although these two decisions play a much smaller role in the
Portfolio than interest-rate, country, and currency management, MAS's research
shows that bearing credit risk often offers financial rewards and that a
diversified approach to credit risk adds to overall portfolio returns.
Similarly, MAS actively manages the amount of prepayment or call risk in the
Portfolio. Many corporate bonds and most mortgages contain an option to prepay
the principal amount prior to maturity. As a result, these bonds generally offer
higher yields, and the global fixed-income team calculates whether this
additional yield is sufficient to compensate for the embedded prepayment-option
risk.

   The Portfolio's return lagged that of its benchmark over the past fiscal
year. Currency positioning was the primary source of underperformance. Exposure
to interest-rate risk led to quarterly volatility of relative returns, but had
only a small net impact on performance. A small exposure to corporate bonds had
little effect on returns.


36
<PAGE>   37
   A noteworthy strategic position in the Portfolio was a below-benchmark
exposure to the Japanese yen. The yen was viewed as comparatively unattractive
because of the structural problems of the Japanese economy and the historically
low level of interest rates there. The yen appreciated sharply, however, during
the year, more than accounting for the Portfolio's return gap versus the
benchmark.

Other currency positions relative to the benchmark contributed to performance.
late in 1998, the Portfolio took on small exposures to the Canadian and
Australian dollars; these two currencies had fallen to very competitive levels
and were well placed to benefit from a recovery in the prices of internationally
traded commodities. Both currencies appreciated in the first half of 1999,
benefiting the Portfolio.

   The most significant interest rate decision in the Portfolio was a
below-market exposure to Japanese bonds, which offered very low real yields.
This underweighting was offset by higher exposures to U.S. and European bonds,
whose real yields were much more attractive. This decision added significantly
to relative returns late in 1998 as Japanese government bonds sold off sharply.
Rising bond yields in Europe and the dollar-bloc markets eroded some of these
gains, however, limiting the net impact of interest rate decisions on Portfolio
returns over the entire fiscal year.

   During the fiscal year, the Portfolio added to its small exposure in
corporate bonds, which are not included in the benchmark. With the establishment
of the Euro as Europe's common currency, the Portfolio had a much wider choice
of corporate securities. The yield premium on this position had a small positive
impact on returns.

GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                           MAS Funds
                   International Fixed Income  Salomon World Gov't Bond Ex-U.S.
<S>  <C>           <C>                         <C>
*    4/29/94                 1000                       1000
     6/30/94                 998                        1010
94   9/30/94                 1010                       1027
     12/31/94                1012                       1033
     3/31/95                 1122                       1182
     6/30/95                 1186                       1240
95   9/30/95                 1175                       1210
     12/31/95                1211                       1235
     3/31/96                 1196                       1214
     6/30/96                 1214                       1219
96   9/30/96                 1247                       1259
     12/31/96                1286                       1285
     3/31/97                 1212                       1211
     6/30/97                 1244                       1245
97   9/30/97                 1253                       1248
     12/31/97                1235                       1231
     3/31/98                 1245                       1236
     6/30/98                 1267                       1256
98   9/30/98                 1383                       1377
     12/31/98                1454                       1449
     3/31/99                 1381                       1379
     6/30/99                 1312                       1317
99   9/30/99                 1370                       1398
</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
                                         MAS International                    Salomon World Gov't
                                           Fixed Income                       Bond Ex-U.S. Index
- -----------------------------------------------------------------------------------------------------
<S>                                      <C>                                  <C>
One Year                                      (0.93)%                                1.51%
- -----------------------------------------------------------------------------------------------------
Five Years                                     6.29%                                 6.36%
- -----------------------------------------------------------------------------------------------------
Since Inception                                5.98%                                 6.37%
- -----------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results. Foreign investments are subject to certain
risks such as currency fluctuations, economic instability, and political
developments.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

Total returns for the Portfolio reflect expenses waived and/or reimbursed by
the Adviser for certain periods. Without such waivers and/or reimbursements,
total returns would have been lower.

* The International Fixed Income Portfolio commenced operations on 4/29/94.
  Total returns are compared to the Salomon World Government Bond Ex-U.S. Index,
  an unmanaged market index.


                                                                             37
<PAGE>   38
MAS Funds/Fixed Income

INTERMEDIATE
 DURATION PORTFOLIO

[PHOTO]
from left:
Jenn Pindle, Tracy Bell
and Dan Rocheleau

THE INTERMEDIATE DURATION PORTFOLIO is a duration-constrained fund managed using
the same principles and strategies as Miller Anderson & Sherrerd's core
fixed-income products. The Portfolio is managed by a team, allowing it to
benefit from the best thinking of a group of individuals, as well as the
expertise of smaller working groups. Sub-groups focus on five key elements of
portfolio structure and composition: interest-rate strategy, yield-curve
positioning, credit risk, prepayment sensitivity and country exposure. In
addition, the Portfolio is diversified across market sectors and issues to
control risk further.

   MAS manages the Portfolio's interest-rate strategy, limiting the average
duration (the Portfolio's sensitivity to changes in interest rates) to between
two and five years. MAS continually studies yield-curve positioning to determine
the point along the curve (maturity) where securities offer the most value. MAS
targets the Portfolio's investments to the area of the curve that provides the
most value, taking into account MAS's expectation of future changes in the shape
of the yield curve.

   The Portfolio purchases only those bonds rated investment grade (BBB/Baa) or
higher. MAS's research shows that bearing credit risk often offers financial
rewards beyond expected losses due to defaults. MAS also believes that a key to
successful corporate-bond management is diversification, and generally limits
exposure to individual credits to less than 1% of the Portfolio. The prepayment
sensitivity of the Portfolio is managed to add value, but not bear unnecessary
call risk. MAS's research shows that mortgage-backed securities offer attractive
returns relative to equal-duration Treasury bonds, but also contain prepayment
risk due to homeowners' rights to prepay their mortgages. MAS strives to manage
this prepayment risk by modeling mortgage-backed securities using state-of-the
art research and technology.

   MAS manages country exposure opportunistically by investing up to 20% of the
Portfolio in high-quality bonds issued by foreign governments when yields abroad
are particularly attractive. Generally, this country exposure is currency
hedged.

   For the past fiscal year, the Portfolio returned 0.64%, essentially matching
the Lehman Intermediate Government/ Corporate Index, which returned 0.63%. This
slightly positive return masked a turbulent market environment, which saw
interest rates rise dramatically and yield premiums in the corporate and
mortgage sectors, after much volatility, narrow. A stronger economic recovery
overseas eased the flight-to-quality that dominated the bond market in the
second half of 1998. This restored some degree of confidence in the corporate
and mortgage sectors. However, it also heightened inflation fears, which pushed
long-term interest rates significantly higher.

   The Portfolio's interest rate strategy detracted from relative performance
during the year. The Portfolio's duration began the period neutral to the
benchmark, but was extended modestly late in 1998. As interest rates continued
to rise in the spring of 1999, the duration was extended further to be 0.6 years
longer than that of the benchmark. Because of this greater interest rate
sensitivity, the continued rise in interest rates through the summer hurt the
Portfolio's


38
<PAGE>   39
performance. The interest rate strategy was premised on the extremely high
levels of real interest rates, one of the Portfolio's primary value indicators.

   Offsetting this early commitment to interest rate sensitivity was an
overweighted position in mortgage and corporate securities. The Portfolio
reacted to the extremely attractive valuations resulting from the
flight-to-quality by adding additional exposure to the already heavy commitments
in these sectors. This strategy gave the Portfolio a significant income
advantage on its benchmark, and allowed it to take advantage of the subsequent
narrowing of the yield spread that occurred in the first half of 1999. Most of
the additions to the Portfolio were made in high-grade industrial and financial
obligations and agency mortgage pass-through securities.

   Additional relative performance was added by several tactical maneuvers that
were made during the year. The Portfolio reduced its mortgage exposure by almost
15% in the second calendar quarter, as yield spreads narrowed to more
historically normal levels. This exposure was then added back in the summer as
yields widened again, due to heavy new issuance in the corporate, asset-backed,
and agency sectors. Also helping relative performance was a nearly 10% position
in Treasury Inflation Protected Securities (TIPS). As inflation fears
heightened, within a tight labor market and a period of rising oil prices,
increased investor interest in TIPS allowed for significant outperformance of
these securities. These holdings were eliminated during the third calendar
quarter in favor of more attractively valued corporate and mortgage securities.
As of September 30, 1999, the Portfolio's weightings in the higher-yielding
corporate and mortgage sectors were 43% and 56%, respectively.

GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                      MAS Funds
                 Intermediate Duration       Lehman Intermediate Gov't/Corp.
<S>   <C>        <C>                         <C>
*     10/3/94           1000                             1000
      12/31/94          995                              999
      3/31/95           1043                             1043
      6/30/95           1088                             1095
95    9/30/95           1114                             1113
      12/31/95          1148                             1152
      3/31/96           1150                             1142
      6/30/96           1158                             1150
96    9/30/96           1184                             1170
      12/31/96          1216                             1199
      3/31/97           1219                             1197
      6/30/97           1255                             1233
97    9/30/97           1289                             1266
      12/31/97          1314                             1293
      3/31/98           1336                             1313
      6/30/98           1358                             1338
98    9/30/98           1400                             1398
      12/31/98          1407                             1402
      3/31/99           1415                             1399
      6/30/99           1400                             1394
99    9/30/99           1409                             1407
</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
                                         MAS Funds
                                   Intermediate Duration
                          -----------------------------------------
                                                                              Lehman Intermediate
                          Institutional -              Investment +            Gov't/Corp. Index
- -----------------------------------------------------------------------------------------------------
<S>                       <C>                          <C>                     <C>
One Year                       0.64%                       0.64%                     0.63%
- -----------------------------------------------------------------------------------------------------
Since Inception                7.11%                       7.11%                     7.08%
- -----------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

+ Represents an investment in the Investment Class which commenced operations
8/16/99. Total returns for periods beginning prior to this date are based on
the performance of the Institutional Class and do not include the 0.15%
Shareholder Servicing Fee applicable to the Investment Class. It is expected
that, over time, returns for the Investment Class will be lower than for the
Institutional Class due to the higher expenses charged.

Total returns for the Institutional Class of the Portfolio reflect expenses
reimbursed by the Adviser for certain periods. Without such waivers and/or
reimbursements, total returns would have been lower.

* The Intermediate Duration Portfolio commenced operations on
10/3/94. Total returns are compared to the Lehman Brothers Intermediate
Government/Corporate Bond Index, an unmanaged market index.

                                                                             39
<PAGE>   40
MAS Funds/Fixed Income

MULTI-MARKET FIXED
 INCOME PORTFOLIO

"With robust retail sales,
consumption, and invest-
ment spending, the U.S.
economy demonstrated
strength throughout
the year."

THE MULTI-MARKET FIXED INCOME PORTFOLIO seeks to provide investors with a
superior real rate of return by investing in domestic and foreign fixed-income
instruments and high-yield securities. MAS believes that the Portfolio's
strategy marks the evolution of U.S.-based core fixed-income portfolios towards
a more substantial commitment to alternative asset classes, including
high-yield, emerging market, and non-dollar securities. All investments made in
these sectors reflect MAS's assessment of market opportunities based upon a
value-driven investment philosophy. Through careful research, MAS has
identified a set of valuation tools which, when coupled with expertise and
experience, helps identify undervalued sectors and securities through a variety
of market environments.

   The Multi-Market Fixed Income Portfolio is actively managed by the MAS
fixed-income management team, which is responsible for portfolio construction
and risk control. The investment process combines top-down and bottom-up
strategies. Using a top-down approach, the team first determines the appropriate
global interest rate and currency exposures, utilizing value-based
decision-making tools. These include the relative level of real interest rates
and an analysis of yield curve slopes. The team then formulates a sector
allocation strategy that tilts the Portfolio toward the most favorable
opportunities in the market. This sector allocation is strongly influenced by
the second element in the process: bottom-up security selection. A goal of this
strategy is to incorporate the best individual investment ideas of portfolio
managers specializing in U.S. high quality bonds, international bonds, U.S.
high-yield bonds, and emerging market debt. The primary valuation tool used to
select securities is an option-adjusted and credit-risk-adjusted yield spread.

   In fiscal 1999, the Portfolio outperformed its custom blended benchmark. This
occurred primarily as a result of an overweighting in U.S. high-yield bonds and
emerging market debt, as well as positive security selection across several
sectors. This outperformance was reduced by the impact of a
longer-than-benchmark duration strategy implemented as rates began to rise early
in the fiscal year.

   The global fixed-income environment during fiscal 1999 was characterized by
several critical factors: a recovery from the flight-to-quality phenomenon that
occurred during the summer of 1998; a steady rise in interest rates driven by
strong economic growth in the U.S.; and buildup of liquidity on the part of
issuers and investors ahead of the upcoming Year 2000 event.

   Throughout the fiscal year, the Portfolio benefited from an overweighting in
riskier fixed-income sectors, which had suffered the most during the market's
reaction to a series of financial crises throughout fiscal 1998. These sectors
had the strongest performance during fiscal 1999, driven by very high levels of
yield spreads. U.S. Treasury yields rose significantly during this period. As
the year began, investors realized that recession and more severe problems in
the global economy were not materializing. With robust retail sales,
consumption, and investment spending, the U.S. economy demonstrated strength
throughout the year. The Federal Reserve raised interest rates twice to reduce
the risk that this growth would result in higher inflation in the U.S.

   Other regions of the world began to see economic recovery as well. As the
fiscal year progressed, Europe showed definite signs of economic growth. Japan
took increasingly aggressive steps to stimulate its economy, and these efforts
appeared to have an effect. Recovering growth in these regions helped contribute
to the general trend toward higher interest rates across developed markets.
Because MAS's measures of value, including the level of real rates, indicated
that bonds represented good investment value, the Portfolio's duration was
lengthened during the fiscal year. To the extent that some of this lengthening
occurred early in the year and rates continued to rise, performance was
negatively impacted.


40
<PAGE>   41
   In addition to overweighting the high-yield and emerging market sectors, the
Portfolio overweighted certain sectors within the U.S. investment grade market.
Specifically, MAS believed that mortgage-backed securities and investment grade
corporate bonds represented excellent value. When these sectors outperformed
U.S. Treasuries early in the fiscal year, the Portfolio reduced its position.
Later in the year, however, pressures again caused these sectors to underperform
U.S. Treasuries. Specifically, the buildup of liquidity on the part of
investors, coupled with record new issuance by corporations, caused dislocation
in the high quality sectors. Yield spreads versus U.S. Treasuries for
mortgage-backed securities and investment grade corporate bonds approached
ten-year highs, in some cases surpassing the very wide spreads experienced
during 1998's flight-to-quality. MAS believed that these events represented an
opportunity for investors, so in the spring of 1999, the Portfolio increased
commitments to these sectors, particularly mortgage-backed securities.

   Finally, the Portfolio was underweight the non-dollar sector at fiscal
year-end. While good values existed, particularly in Europe, MAS still believed
that the value in the U.S. market was superior. For the fiscal year, the
Portfolio's investments in non-dollar securities reduced absolute performance,
particularly due to the general strength of the U.S. dollar for most of the
year. Security selection in this sector also had a modestly negative impact on
portfolio performance.

GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                      MAS Funds
                 Multi-Market Fixed Income      Salomon Broad   Salomon World Gov't Bond Ex-US  60/12/10/10/8 Blended
<S> <C>          <C>                            <C>             <C>                             <C>
*   10/1/97             1000                        1000                   1000                     1000
    12/31/97            1005                        1026                   987                      1016
    3/31/98             1031                        1042                   991                      1039
    6/30/98             1034                        1066                   1008                     1054
98  9/30/98             1027                        1110                   1105                     1075
    12/31/98            1058                        1115                   1163                     1096
    3/31/99             1064                        1110                   1107                     1096
    6/30/99             1050                        1099                   1057                     1086
99  9/30/99             1051                        1107                   1121                     1097
</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
             MAS Multi-Market       Salomon Broad     Salomon World Gov't      60/20/12/8
               Fixed Income             Index         Bond Ex-U.S. Index      Blended Index
- -----------------------------------------------------------------------------------------------------
<S>          <C>                    <C>               <C>                     <C>
One Year            2.36%                (0.27)%              1.51%               2.07%
- -----------------------------------------------------------------------------------------------------
Since Inception     2.54%                5.24%                5.91%               4.74%
- -----------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results. Foreign investments are subject to certain
risks such as currency fluctuations, economic instability, and political
developments. High-yield fixed-income securities, otherwise known as "junk
bonds," represent a much greater risk of default and tend to be more volatile
than higher-rated bonds.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

Total returns for the Portfolio reflect expenses waived and/or reimbursed by
the Adviser for certain periods. Without such waivers and/or reimbursements,
total returns would have been lower.

* The Multi-Market Fixed Income Portfolio commenced operations on 10/1/97.
  Total returns are compared to the Salomon Broad Investment Grade Index and
  the Salomon World Government Bond Ex-U.S. Index, both unmanaged market
  indices, as well as the 60/20/12/8 Blended Index, an unmanaged index
  comprised of 60% Salomon Broad Investment Grade Index, 20% Salomon World
  Government Bond Ex-U.S. Index (one half hedged into U.S. dollars), 12%
  Salomon High Yield Index, and 8% J.P. Morgan Emerging Markets Bond Index.


                                                                             41
<PAGE>   42
MAS Funds/Balanced

BALANCED
 PORTFOLIO

"Management of the
Portfolio also draws on
asset allocation exper-
tise from the entire
Morgan Stanley Dean
Witter Investment
Management global
organization."

[PHOTO]
from left:
Karen Igler, Ruth Hughes-Guden,
Deborah Reyner Roberts and
Gregg Robinson

THE BALANCED PORTFOLIO provides active asset allocation management using Miller
Anderson & Sherrerd's core equity and fixed-income strategies in a single
portfolio. MAS shifts assets as relative values change, using a 60% equity and
40% fixed-income allocation as a neutral starting point, and manages
diversification and risk control across both asset classes.

   Asset allocation decisions combine measures of value, earnings, interest rate
and inflation dynamics, and economic analysis. Sentiment and liquidity are taken
into account when they reach extreme levels. When making asset allocation
decisions, MAS calculates risk-adjusted expected returns for equities and
fixed-income securities. These returns are derived from proprietary models that
incorporate valuation levels, earnings trends, interest rate and inflation
dynamics, and sentiment measures. MAS then allocates a greater portion of the
Portfolio's assets to the asset class with the highest risk-adjusted expected
returns. Total portfolio risk is monitored in absolute terms as well as against
the product's benchmark.

   Management of the Portfolio also draws on asset allocation expertise from the
entire Morgan Stanley Dean Witter Investment Management global organization. The
Asset Allocation Committee provides the portfolio management team with input on
topics such as developments in the Mergers and Acquisitions area and trends in
credit markets. Using this information, the team evaluates the relative risks
and returns of the broad asset classes and makes decisions about portfolio
composition. The individual holdings within the Portfolio are managed based on
the expertise of MAS's specific product teams for each asset class represented.

   During fiscal 1999, the Portfolio returned 58 basis points more than its
custom benchmark of 60% S&P 500 and 40% Salomon Broad Index. Security selection
in both the equity and fixed- income portions of the Portfolio were responsible
for the outperformance. The contribution from asset allocation was neutral.

   Between August and October of 1998, there was a significant sell-off in
equities around the world on the heels of the Russian debt default, the bailout
of a large hedge fund, and a rally in the bond market. Relative valuations moved
in favor of equities, and in mid-October, the

42
<PAGE>   43

Portfolio started to increase equity weighting from a low of 48% to a neutral
position (60%) relative to the benchmark. In April, after equities had rallied
by almost 30%, and bond yields in the U.S. and abroad had moved up by about 100
basis points, the Portfolio started to reduce equity exposure once again.

   At fiscal year-end, the Portfolio had a higher-than-benchmark allocation to
U.S. fixed income, offset by a 6-percentage point underweight in equities.
Valuations for U.S. equities were high relative to bonds, and the profit outlook
had started to deteriorate. The Portfolio also had a higher-than-benchmark
allocation to corporate and mortgage-backed fixed income securities. Spreads
relative to Treasuries were near their highs, and MAS believed that these
spreads were more than sufficient to compensate investors for default and
prepayment risks.

GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                      MAS Funds
                      Balanced       S&p 500        Salomon Broad   60/40 Blend
<S>     <C>           <C>            <C>            <C>             <C>
*       12/31/92        1000          1000                1000          1000
        3/31/93         1034          1044                1042          1043
        6/30/93         1048          1049                1071          1057
93      9/30/93         1083          1076                1099          1085
        12/31/93        1104          1101                1099          1100
        3/31/94         1069          1059                1068          1063
        6/30/94         1060          1064                1058          1061
94      9/30/94         1085          1116                1064          1095
        12/31/94        1082          1115                1068          1097
        3/31/95         1157          1224                1122          1183
        6/30/95         1247          1341                1191          1279
95      9/30/95         1317          1447                1213          1350
        12/31/95        1378          1534                1266          1422
        3/31/96         1431          1617                1244          1458
        6/30/96         1473          1689                1250          1500
96      9/30/96         1494          1742                1273          1539
        12/31/96        1590          1887                1312          1635
        3/31/97         1612          1937                1305          1658
        6/30/97         1786          2275                1352          1855
97      9/30/97         1904          2446                1397          1963
        12/31/96        1902          2516                1438          2020
        3/31/97         2068          2867                1461          2203
        6/30/97         2100          2962                1495          2267
98      9/30/97         1959          2667                1557          2169
        12/31/98        2195          3235                1563          2450
        3/31/99         2285          3396                1556          2518
        6/30/99         2408          3636                1541          2615
99      9/30/99         2291          3408                1553          2525
</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
                             MAS Balanced
- -------------------------------------------------------     S&P 500        Salomon      60/40 Blended
             Institutional -   Investment **  Adviser +      Index       Broad Index        Index
- --------------------------------------------------------------------------------------------------------
<S>          <C>               <C>            <C>           <C>          <C>            <C>
One Year         16.99%          16.84%        16.76%       27.80%         (0.27)%         16.41%
- --------------------------------------------------------------------------------------------------------
Five Years       16.13%          16.01%        15.96%       25.03%          7.86%          18.19%
- --------------------------------------------------------------------------------------------------------
Since Inception  13.07%          12.99%        12.96%       19.93%          6.74%          14.71%
- --------------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

** Represents an investment in the Investment Class which commenced operations
4/3/97. Total returns for periods beginning prior to this date are based on the
performance of the Institutional Class and do not include the 0.15% Shareholder
Servicing Fee applicable to the Investment Class.

+ Represents an investment in the Adviser Class which commenced operations
11/1/96. Total returns for periods beginning prior to this date are based on
the performance of the Institutional Class and do not include the 0.25% 12b-1
Fee applicable to the Adviser Class. Total returns for the Adviser Class of the
Portfolio reflect expenses reimbursed by the Adviser for certain periods.
Without such reimbursements, total returns would have been lower.

* The Balanced Portfolio commenced operations on 12/31/92. Total returns are
  compared to the S&P 500 Index and the Salomon Broad Investment Grade Index,
  both unmanaged market indices, as well as the 60/40 Blended Index, an
  unmanaged index comprised of 60% S&P 500 Index and 40% Salomon Broad
  Investment Grade Index.


                                                                             43
<PAGE>   44
MAS Funds/Balanced

MULTI-ASSET-CLASS
 PORTFOLIO

"When making global
asset-allocation decisions,
MAS calculates risk-
adjusted expected returns
for each asset class."

THE MULTI-ASSET-CLASS PORTFOLIO provides global asset allocation among U.S. and
foreign stocks, bonds, and high-yield securities. Miller Anderson & Sherrerd
actively shifts assets among them as their relative values and risks change and
manages diversification and risk control across all five asset classes.
Diversification across this wide array of asset types offers a risk/return
profile that historically has been more attractive than balanced portfolios
consisting only of domestic stocks and bonds.

   The investment process consists of five interrelated decisions: allocation
among global asset classes, country allocation, allocation to equities versus
fixed-income securities within markets, currency exposures, and value
determinations within markets. Asset-allocation decisions couple measures of
value, earnings, interest rate and inflation dynamics, and economic analysis.
Sentiment and liquidity are taken into account when they reach extreme levels.

   When making global asset-allocation decisions, MAS calculates risk-adjusted
expected returns for each asset class. These returns are derived from
proprietary models that incorporate valuation levels, earnings trends, inflation
and interest rate dynamics, and sentiment measures. MAS allocates a greater
portion of the Portfolio's assets to the asset classes with the highest risk
adjusted expected returns. Total portfolio risk is monitored in absolute terms
as well as against the product's benchmark.

   While currency valuations help shape MAS's view of the relative value of
foreign investments and thus influence the Portfolio's country allocations,
currency exposure is viewed as a separate decision. The degree of currency
exposure is based on MAS's analysis of deviations from purchasing-power parity,
with particular attention directed towards over- or under-valuation that cannot
be explained by differences in real interest rates.

    Management of the Portfolio also draws on asset allocation expertise from
the entire Morgan Stanley Dean Witter Investment Management global organization.
The Asset Allocation Committee provides the portfolio management team with input
on topics such as developments in the Mergers and Acquisitions area and trends
in credit markets. Using this information, the team evaluates the relative risks
and returns of the broad asset classes and makes decisions about portfolio
composition. The individual holdings of the Portfolio are managed based on the
expertise of MAS's specific product teams for each of the five asset classes
represented.

   During fiscal 1999, the MAS Funds Multi-Asset-Class Portfolio underperformed
against its custom benchmark of 50% U.S. equities, 14% foreign equities, 24%
U.S. fixed income, 6% foreign fixed income, and 6% high yield. Asset allocation
decisions, particularly the  less-than-index exposure to U.S. equities, and
security selection in the international equity portion of the Portfolio
contributed to the underperformance. Security selection in U.S. equities, U.S.
fixed income, and high-yield added value relative to the benchmark.

   The Portfolio began its fiscal year with overweighted positions in
international equities, high-yield, and emerging market debt securities. The
overall equity position was approximately 10 percentage points less than that of
the benchmark. Yield spreads of high-yield and emerging market debt securities
relative to U.S. Treasuries were very attractive, and MAS believed that these
spreads more than compensated investors for the higher riskiness of these asset
classes. International equities offered investors higher expected returns than
U.S. stocks. Foreign bonds offered significantly lower real interest rates than
U.S. bonds; therefore, the Portfolio had significantly lower-than-benchmark
exposure to this asset class.

   In the first quarter of the fiscal year, after a significant sell-off in
equities, the Russian debt default, and the bailout of a large hedge fund in the
U.S., the Portfolio increased its exposure to U.S. equities and reduced its
exposure to bonds. However, the equity weight was brought into line with the
benchmark only after part of the late 1998 rally had already taken place. In
April, 1999, after equities had rallied almost 30%,


44
<PAGE>   45
and bond yields in the U.S. and abroad had moved up by about 100 basis points,
the Portfolio began to reduce equity exposure.

   Additionally, interest rates in the Euro area increased more than interest
rates in the U.S. and yield curves steepened significantly. The Portfolio
therefore increased exposure to foreign fixed income to bring its allocation
more in line with the benchmark.

   At fiscal year-end, the Portfolio had a higher-than-benchmark allocation to
U.S. fixed income, offset by an underweight in U.S. equities. Valuations for
U.S. equities were high relative to bonds, and the profit outlook had started to
deteriorate. The Portfolio also had a higher-than-benchmark allocation to
international equities, focused on Japanese equities. The Japanese economy had
shown signs of an accelerating recovery, and the corporate earnings outlook was
improving. Valuations were attractive, especially relative to other equity
markets around the world. Finally, the Portfolio had a higher-than-benchmark
allocation to high-yield securities. Spreads relative to Treasuries were near
their highs and, while defaults had increased, MAS believed that these spreads
were more than sufficient to compensate investors for default risks.

GROWTH OF A $1 MILLION INVESTMENT SINCE INCEPTION

<TABLE>
<CAPTION>
                     MAS Funds
                   Multi-Asset-Class   S&P 500          Salomon Broad     MSCI EAFE       50/24/14/6/6 Blended
<S>    <C>         <C>                 <C>              <C>               <C>             <C>
*      7/29/94         1000              1000               1000             1000                 1000
94     9/30/94         997               1016               987              991                  1003
       12/31/94        986               1015               991              981                  1003
       3/31/95         1044              1114               1041             1000                 1079
       6/30/95         1125              1221               1104             1007                 1157
95     9/30/95         1179              1318               1125             1049                 1214
       12/31/95        1229              1397               1174             1091                 1273
       3/31/96         1280              1472               1154             1123                 1306
       6/30/96         1326              1538               1159             1141                 1343
96     9/30/96         1341              1585               1181             1139                 1375
       12/31/96        1425              1718               1217             1157                 1452
       3/31/97         1443              1764               1210             1139                 1467
       6/30/97         1604              2071               1254             1287                 1638
97     9/30/97         1697              2227               1296             1278                 1719
       12/31/97        1674              2291               1334             1178                 1741
       3/31/98         1835              2610               1355             1351                 1916
       6/30/98         1849              2696               1387             1365                 1972
98     9/30/98         1689              2428               1444             1171                 1859
       12/31/98        1906              2945               1450             1413                 2125
       3/31/99         1967              3092               1443             1433                 2175
       6/30/99         2062              3310               1430             1469                 2249
99     9/30/99         1988              3103               1440             1534                 2203
</TABLE>

Fiscal Years Ending September 30

AVERAGE ANNUAL TOTAL RETURNS Ended 9/30/99*

<TABLE>
<CAPTION>
                  MAS Multi-Asset-Class
             -----------------------------    S&P 500   Salomon Broad   MSCI EAFE   50/24/14/6/6
             Institutional -  Investment **    Index        Index          Index    Blended Index
- -------------------------------------------------------------------------------------------------------
<S>          <C>              <C>             <C>       <C>             <C>         <C>
One Year         17.71%         17.53%        27.80%        (0.27)%       30.95%        18.48%
- -------------------------------------------------------------------------------------------------------
Five Years       14.80%         14.68%        25.03%         7.86%         9.12%        17.04%
- -------------------------------------------------------------------------------------------------------
Since Inception  14.21%         14.09%        24.47%         7.31%         8.62%        16.49%
- -------------------------------------------------------------------------------------------------------
</TABLE>

Total returns are net of all fees. Total returns represent past performance and
are not indicative of future results. Foreign investments are subject to certain
risks such as currency fluctuations, economic instability, and political
developments. High-yield fixed-income securities, otherwise known as "junk
bonds," represent a much greater risk of default and tend to be more volatile
than higher-rated bonds.

The investment return and principal value of an investment will fluctuate so
that an investor's shares, when redeemed, may be worth either more or less than
their original cost.

- - Represents an investment in the Institutional Class.

** Represents an investment in the Investment Class which commenced operations
6/10/96. Total returns for periods beginning prior to this date are based on
the performance of the Institutional Class and do not include the 0.15%
Shareholder Servicing Fee applicable to the Investment Class. Total returns for
the Portfolio reflect expenses waived and/or reimbursed by the Adviser for
certain periods. Without such waivers and/or reimbursements, total returns
would have been lower.

* The Multi-Asset-Class Portfolio commenced operations on 7/29/94. Total
  returns are compared to the S&P 500 Index, the Salomon Broad Investment Grade
  Index, and the Morgan Stanley Capital International EAFE Index, all unmanaged
  market indices, as well as the 50/24/14/6/6 Blended Index, an unmanaged index
  comprised of 50% S&P 500 Index, 24% Salomon Broad Investment Grade Index, 14%
  MSCI EAFE Index, 6% Salomon High Yield Index and 6% Salomon World Government
  Bond Ex-U.S. Index. Prior to 1/1/99, the above blend reflected 14% MSCI
  EAFE-GDP Weighted Index instead of 14% MSCI EAFE Index. The benchmark was
  changed because the MSCI EAFE Index has become more representative of the
  portfolio's investment opportunities than the MSCI EAFE - GDP Weighted Index.



                                                                             45
<PAGE>   46
Miller Anderson & Sherrerd, LLP Morgan Stanley Dean Witter Investment Management

TRUSTEES AND
 OFFICERS

The following is a list of the Trustees and the principal executive officers of
the Fund as well as a brief statement of their present positions and principal
occupations:

THOMAS L. BENNETT, CFA*

Chairman of the Board of Trustees; Managing Director, Morgan Stanley Dean Witter
& Co.; Member of the Morgan Stanley Dean Witter Investment Management Executive
Committee; Portfolio Manager and Head of Fixed Income Investment Team, Miller
Anderson & Sherrerd, LLP; Trustee, Haverford School.

THOMAS P. GERRITY

Trustee; Professor of Management, Director of the Electronic Commerce Forum, and
formerly Dean, Wharton School of Business, University of Pennsylvania; Director,
Sunoco; Fannie Mae; Reliance Group Holdings; CVS Corporation; IKON Office
Solutions, Inc.; Knight-Ridder, Inc.; Fiserv; Internet Capital Group; formerly
Director, Digital Equipment Corporation and Union Carbide Corporation.

JOSEPH P. HEALEY

Trustee; Headmaster, Ethical Culture Fieldston School; Trustee, Springside
School; formerly Headmaster, Haverford School; Dean, Hobart College; Associate
Dean, William & Mary College.

JOSEPH J. KEARNS

Trustee; investment consultant; Director, Electro Rent Corporation; Trustee,
Southern California Edison Nuclear Decommissioning Trust; Director, The Ford
Family Foundation; formerly, CFO of The J. Paul Getty Trust.

VINCENT R. MCLEAN

Trustee; Director, Legal and General America, Inc.; Director, Banner Life
Insurance Co.; Director, William Penn Life Insurance Company of New York;
formerly Executive Vice President, Chief Financial Officer, Director and Member
of the Executive Committee of Sperry Corporation (now part of Unisys
Corporation).

C. OSCAR MORONG, JR.

Trustee; Managing Director, Morong Capital Management; Director, CitiFunds,
CitiSelect Folios and related portfolios; formerly Senior Vice President and
Investment Manager for CREF, TIAA-CREF Investment Management, Inc.; Director,
The Indonesia Fund and the Landmark Funds; Director, Ministers and Missionaries
Benefit Board of American Baptist Churches.

LORRAINE TRUTEN, CFA

President, MAS Funds; Principal, Morgan Stanley Dean Witter & Co.; Head of
Mutual Fund Services, Miller Anderson & Sherrerd, LLP; President, MAS Fund
Distribution, Inc.

JAMES A. GALLO

Vice President and Treasurer, MAS Funds; Head of Fund Administration, Miller
Anderson & Sherrerd, LLP; Vice President, Morgan Stanley Dean Witter & Co.;
formerly Vice President and Director of Investment Accounting, PFPC, Inc.

RICHARD J. SHOCH

Secretary, MAS Funds; Fund Administration Manager, Miller Anderson & Sherrerd,
LLP; Vice President, Morgan Stanley Dean Witter & Co.; formerly Counsel, Vice
President and Assistant Secretary, SEI Corporation.

*Trustee Bennett is deemed to be an "interested person" of the Fund as that
 term is defined in the Investment Company Act of 1940, as amended.

This report should be preceded or accompanied by a prospectus.
MAS Fund Distribution, Inc. serves as General Distribution Agent for MAS Funds.
Date of first use: November, 1999

                                                                             47

<PAGE>   47
                               [MAS FUNDS LOGO]

                Morgan Stanley Dean Witter Investment Management
                        Miller Andersen & Sherrerd, LLP

                                One Tower Bridge
                        West Conshohocken, PA 19428-2899
          Investment Adviser:(610) 940-5000 - MAS Funds:(800) 354-8185


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