STATE STREET RESEARCH MASTER INVESTMENT TRUST
N-30D, 1999-02-26
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<PAGE>

- -------------------------------------------------------------------------------
                              STATE STREET RESEARCH
- -------------------------------------------------------------------------------
                                INVESTMENT TRUST
                                ----------------

                                ANNUAL REPORT

                                December 31, 1998

                               --------------------
                                  WHAT'S INSIDE
                               --------------------

                               FROM THE CHAIRMAN
                               Financial markets delivered
                               strong gains in 1998

                               PORTFOLIO MANAGER'S REVIEW
                               Large-cap growth stocks fueled
                               strong stock market gains

                               FUND INFORMATION
                               Facts and figures

                               PLUS, COMPLETE PORTFOLIO HOLDINGS
                               AND FINANCIAL STATEMENTS

- ----------------------
        DALBAR
HONORS COMMITMENT TO:
      INVESTORS
        1998
- ----------------------

   For Excellence
         in
 Shareholder Service

                                                     STATE STREET RESEARCH FUNDS
<PAGE>

FROM THE CHAIRMAN

- -------------------------------------------------------------------------------
THIS IS THE 75TH ANNUAL REPORT OF STATE STREET RESEARCH INVESTMENT TRUST. THE
FUND WILL CELEBRATE ITS ANNIVERSARY ON JULY 29, 1999 -- COMMEMORATING THE
FOUNDING OF ONE OF THE FIRST MUTUAL FUND FAMILIES IN THE UNITED STATES AND THE
WORLD.
- -------------------------------------------------------------------------------

[Photo of Ralph F. Verni]

DEAR SHAREHOLDER:
In 1998, financial markets in the United States and most developed foreign
nations delivered strong gains. The U.S. economy boosted personal income
and kept unemployment low. Yet growth was moderate enough to hold inflation
down to a mere 1.5% for the year. During the summer, the collapse of
Russia's currency sent waves through the world's markets, but a fast-acting
Federal Reserve Board helped stem a crisis. Currencies continued to slump
in many emerging markets. In some, devaluation threatened, with Brazil in
the hot seat at year-end.


STOCKS
A steep U.S. stock market correction late in the summer was short-lived.
Despite signs of slower profit growth, the market staged a comeback in the
fourth quarter. Technology stocks and large company growth stocks were the
strongest performers, led by Internet stocks which delivered surprising
gains. The S&P 500 was up by more than 20% for an unprecedented fourth
consecutive year.(1) However, gains were concentrated in a narrow band of
stocks. The average stock on the New York Stock Exchange actually lost
ground for the year. And the stocks of small and medium-sized companies
continued to lag despite a fourth-quarter comeback.

BONDS
Bonds benefited from the Federal Reserve Board's three quick interest rate
cuts in autumn. The yield on the bellwether 30-year U.S. Treasury bond fell
below 5.0%, then rose slightly at year-end. Not surprisingly, U.S. Treasury
bonds led fixed income market performance for the year. Most other segments
of the bond market delivered attractive single-digit gains. High-yield
bonds disappointed investors, gaining only 0.6% as measured by the First
Boston High Yield Index.

INTERNATIONAL
Foreign markets delivered mixed returns in 1998. In Europe, expectations
for the new common currency, the euro, ran high. Although this helped
European markets, they did better in the first half of the year than in the
second. Most emerging markets were hurt by currencies that continued to
slump against the dollar, or by fears of devaluation, which materialized in
Russia, then threatened in Brazil. Japan showed some willingness to address
its lingering economic problems. But the modest gains attributed to
Japanese stocks owned by U.S. investors were primarily the result of a
weaker dollar.

OUTLOOK AND OPPORTUNITIES
As investors, you may be asking where the opportunities are in a stock
market that has soared for the better part of a decade and a bond market
where interest rates are at or near historic lows. My reply: in
diversification -- and in markets that have been beaten down, such as small
and mid-cap stocks, high-yield bonds, and foreign markets. But every
investor has individual goals. Now is a good time to consult your financial
professional. And as always, thank you for your confidence in State Street
Research funds.

Sincerely,

/s/ Ralph F. Verni

Ralph F. Verni
Chairman

December 31, 1998

(1) The S&P 500 (officially the "Standard and Poor's 500 Composite Stock Price
    Index") is an unmanaged index of 500 U.S. stocks. The index does not take
    transaction charges into consideration. It is not possible to invest
    directly in the index.

(2) 28.26% for Class B shares; 28.15% for Class C shares; 29.51% for Class S
    shares.

(3) Keep in mind that past performance is no guarantee of future results. The
    Fund's share price, yield and return will fluctuate, and you may have a gain
    or loss when you sell your shares. All returns assume reinvestment of
    capital gain distributions and income dividends at net asset value.
    Performance reflects a maximum 4.5% Class A share front-end sales charge, or
    5% Class B share or 1% Class C share contingent deferred sales charge, where
    applicable.

(4) Class S shares, offered without a sales charge, are available through
    certain employee benefit plans and special programs.

(5) The fund's returns include performance before the creation of share classes.
    If this performance reflected the share classes' current 12b-1 fees, the
    fund's returns may have been lower.

(6) During the periods prior to 1990 that shares of the Fund were not available
    to the public, the Fund was not subject to the cash inflows and higher
    redemptions and expenses that have occurred during the Fund's current
    continuous public offering.

PLEASE NOTE THAT THE DISCUSSION THROUGHOUT THIS SHAREHOLDER REPORT IS DATED AS
INDICATED AND, BECAUSE OF POSSIBLE CHANGES IN VIEWPOINT, DATA AND TRANSACTIONS,
SHOULD NOT BE RELIED UPON AS BEING CURRENT THEREAFTER.

- -------------------------------------------------------------------------------
FUND INFORMATION (all data are for periods ended December 31, 1998)
- -------------------------------------------------------------------------------

TOTAL VALUE OF $10,000 INVESTED ON DECEMBER 31, 1988(3)
(Class A shares, at maximum applicable sales charge)

                                    VALUE OF
                                   ACCOUNT AT
                    DATE            YEAR END
                    ----            --------
                    12/31/88       $ 9,550
                    12/31/89        12,620
                    12/31/90        12,499
                    12/31/91        16,009
                    12/31/92        17,015
                    12/31/93        18,700
                    12/31/94        17,983
                    12/31/95        23,890
                    12/31/96        28,913
                    12/31/97        37,271
                    12/31/98        48,125

AVERAGE ANNUAL TOTAL RETURN
(at maximum applicable sales
charge)(3)(4)(5)(6)
- ------------------------------------------------------------------------------
                   LIFE OF FUND
                 (since 7/29/24)       10 YEARS        5 YEARS         1 YEAR
- ------------------------------------------------------------------------------
Class A                  13.28%           17.01%         19.70%         23.31%
- ------------------------------------------------------------------------------
Class B                  13.29%           17.07%         19.75%         23.26%
- ------------------------------------------------------------------------------
Class C                  13.29%           17.07%         19.90%         27.15%
- ------------------------------------------------------------------------------
Class S                  13.38%           17.75%         21.14%         29.51%
- ------------------------------------------------------------------------------

The performance data shown above do not reflect an increase in the maximum
Class A sales charge from 4.5% to 5.75%, effective as of 1/1/99. At the new,
higher Class A sales charge, the performance would have been lower. Assuming
the increased sales charge was in effect, performance would have been as
follows:

                   LIFE OF FUND
                 (since 7/29/24)       10 Years        5 Years         1 Year
- ------------------------------------------------------------------------------
Class A                  13.28%           16.86%         19.39%         21.70%
<PAGE>

PORTFOLIO MANAGER'S REVIEW
Investment Trust: Large-cap growth stocks fueled strong stock market gains

[Photo of John Wilson]
     John Wilson
   Portfolio Manager

We spoke with John Wilson, portfolio manager of State Street Research Investment
Trust, about the year ended December 31, 1998 and his views on the period ahead.

Q: HOW DID THE FUND PERFORM LAST YEAR?

A: It was a very strong year for the Fund. Class A shares gained 29.12%, [does
not reflect sales charge](2) for the 12 months ended December 31, 1998. The Fund
significantly outperformed the Lipper average growth and income fund, which
gained 15.61%. And, it outperformed the S&P 500, a broad measure of common stock
performance, which gained 28.60% over the same period.

Q: WHAT ACCOUNTED FOR THE FUND'S STRONG PERFORMANCE?

A: Our focus on large-cap growth stocks paid off as growth stocks, in general,
outperformed value stocks by a wide margin. Also, the Fund's emphasis on
companies with strong market leadership positions in their industries was
beneficial. These were the companies most favored by investors during the year,
given their strong earnings growth.

Q: HOW DID THE FUND REACT TO THE VOLATILITY THAT BROUGHT THE MARKET DOWN SHARPLY
   LATE LAST SUMMER?

A: Not surprisingly, the Fund's volatility was in line with the market as a
whole. The Fund has been positioned somewhat cautiously during the summer.
During the market's weakness, we were able to purchase additional shares of
financial and technology stocks at attractive prices. This helped in the fourth
quarter.

Q: WHICH INVESTMENTS HELPED THE FUND THE MOST?

A: The Fund's investments in technology, telecommunications, financial services
and retail stocks were among the strongest performers. Companies such as Cisco
Systems, Lucent Technologies, and MCI WorldCom, in the technology sector, are
all examples of companies taking advantage of rapid growth in either voice or
data networking. In the financial services area, some stocks were hurt in the
third quarter, but rebounded nicely. One example is Chase Manhattan Bank, which
experienced an impressive recovery in many of its capital markets businesses.
The Fund also benefited from strong holdings in the supermarket and drug store
industries. These include CVS, Rite Aid, and Safeway.

Q: WERE THERE ANY DISAPPOINTMENTS?

A: Although the Fund had relatively modest exposure to basic materials stocks,
investments in DuPont and in Rohm & Haas, both chemical companies,
underperformed the market. Earnings proved disappointing because of difficult
global economic conditions. The Fund's investments in defensive sectors such as
utilities and energy underperformed. However, three interest rate cuts by the
Federal Reserve Board in the last half of the year renewed confidence in the
economy and could provide lift for these sectors in 1999.

Q: WHAT IS YOUR OUTLOOK FOR THE PERIOD AHEAD?

A: The long-term prospects for the U.S. economy remain bright. Although the
market has risen significantly, we still see investment opportunities with both
short- and long-term potential. That said, the Fund is not immune to adverse
changes in economic trends should they occur. We continue to seek out
investments in companies that are posed to benefit from a low inflationary
environment. We will continue to invest our shareholders' funds in companies
with strong growth prospects at reasonable stock prices.

December 31, 1998

- -------------------------------------------------------------------------------
TOP 10 STOCK POSITIONS
(by percentage of net assets)

(1)  MCI WORLDCOM Telecommunications services                              3.4%
(2)  GENERAL ELECTRIC Diversified manufacturer                             3.1%
(3)  TYCO INTERNATIONAL Diversified manufacturer                           3.1%
(4)  IBM Computer systems                                                  2.4%
(5)  INTEL Semiconductors                                                  2.4%
(6)  BANKAMERICA Money center banks                                        2.4%
(7)  XEROX Copiers                                                         2.2%
(8)  FEDERAL NATIONAL MORTGAGE Home mortgage funds                         2.2%
(9)  BRISTOL-MYERS SQUIBB Pharmaceuticals                                  2.2%
(10) CHASE MANHATTAN Banking                                               2.1%

These securities represent an aggregate of 25.5% of the portfolio. Because of
active management, there is no guarantee that the Fund currently invests, or
will continue to invest, in the securities listed in this table or in the text
above.

TOP 5 INDUSTRIES
(by percentage of net assets)

                      RETAIL TRADE              10.1%
                      RECREATION                 8.1%
                      TELEPHONE                  6.3%
                      INSURANCE                  6.2%
                      OFFICE EQUIPMENT           6.2%
                      Total: 36.9%


BEST AND WORST CONTRIBUTORS TO PERFORMANCE
(January 1, 1998 through December 31, 1998)

BEST /\
- -------------------------------------------------------------------------------
MCI WORLDCOM
    Rapid growth in telecommunications.
TYCO INTERNATIONAL
    Earnings growth; management performance.
SAFEWAY
    Consolidation of supermarkets.

WORST \/
- -------------------------------------------------------------------------------
SEAGULL ENERGY
    Decline in oil prices.
BANKAMERICA
    Earnings shortfalls.
ORYX ENERGY
    Decline in oil prices.
<PAGE>

STATE STREET RESEARCH INVESTMENT TRUST

- -------------------------------------------------------------------------------
INVESTMENT PORTFOLIO
- -------------------------------------------------------------------------------
December 31, 1998

- -------------------------------------------------------------------------------
                                                                    VALUE
                                                  SHARES           (NOTE 1)
- -------------------------------------------------------------------------------
COMMON STOCKS 97.7%
BASIC INDUSTRIES 10.5%
CHEMICAL 2.1%
E.I. Du Pont De Nemours & Co. ..............          339,700   $   18,025,331
Monsanto Co. ...............................           82,900        3,937,750
Rohm & Haas Co. ............................        1,083,100       32,628,388
                                                                --------------
                                                                    54,591,469
                                                                --------------
ELECTRICAL EQUIPMENT 3.1%
General Electric Co. .......................          798,700       81,517,319
                                                                --------------
FOREST PRODUCT 1.0%
Fort James Corp. ...........................          661,500       26,460,000
                                                                --------------
MACHINERY 4.3%
Black & Decker Corp. .......................          548,000       30,722,250
Tyco International Ltd. ....................        1,055,200       79,601,650
                                                                --------------
                                                                   110,323,900
                                                                --------------
Total Basic Industries .....................                       272,892,688
                                                                --------------
CONSUMER CYCLICAL 22.3%
AUTOMOTIVE 1.6%
General Motors Corp. .......................          294,300       21,060,844
Renault SA .................................          446,000       20,022,536
                                                                --------------
                                                                    41,083,380
                                                                --------------
HOTEL & RESTAURANT 2.5%
McDonald's Corp. ...........................          621,100       47,591,788
Mirage Resorts Inc.* .......................        1,103,500       16,483,531
                                                                --------------
                                                                    64,075,319
                                                                --------------
RECREATION 8.1%
CBS Corp. ..................................        1,099,400       36,005,350
Fox Entertainment Group Inc.* ..............          741,600       18,679,050
MediaOne Group Inc.* .......................          965,300       45,369,100
News Corp. Ltd. ADR ........................          835,800       22,096,463
Time Warner Inc. ...........................          702,600       43,605,112
Viacom Inc. Cl. B* .........................          568,700       42,083,800
Walt Disney Co. ............................          121,896        3,656,880
                                                                --------------
                                                                   211,495,755
                                                                --------------
RETAIL TRADE 10.1%
Cendant Corp.* .............................          801,300       15,274,781
CVS Corp. ..................................          925,700       50,913,500
Dayton Hudson Corp. ........................          503,600       27,320,300
Home Depot Inc. ............................          406,100       24,848,244
Kroger Co.* ................................          604,000       36,542,000
Rite Aid Corp. .............................          660,100       32,716,206
Safeway Inc.* ..............................          706,800       43,070,625
Wal-Mart Stores, Inc. ......................          406,300       33,088,056
                                                                --------------
                                                                   263,773,712
                                                                --------------
Total Consumer Cyclical ....................                       580,428,166
                                                                --------------
CONSUMER STAPLE 17.7%
BUSINESS SERVICE 1.6%
Interpublic Group of Companies, Inc. .......          359,650       28,682,087
Waste Management Inc. ......................          296,800       13,838,300
                                                                --------------
                                                                    42,520,387
                                                                --------------
DRUG 5.0%
American Home Products Corp. ...............          402,000       22,637,625
Bristol-Myers Squibb Co. ...................          426,400       57,057,650
Pfizer Inc. ................................           99,200       12,443,400
SmithKline Beecham PLC .....................          294,700       20,481,650
Warner-Lambert Co. .........................          239,400       17,999,887
                                                                --------------
                                                                   130,620,212
                                                                --------------
FOOD & BEVERAGE 4.2%
Coca-Cola Enterprises Inc. .................          672,600       24,045,450
H.J. Heinz Co. .............................          555,600       31,460,850
PepsiCo Inc. ...............................          476,900       19,523,094
Sara Lee Corp. .............................        1,224,000       34,501,500
                                                                --------------
                                                                   109,530,894
                                                                --------------
HOSPITAL SUPPLY 3.7%
Baxter International Inc. ..................          477,900       30,734,944
Guidant Corp. ..............................          222,800       24,563,700
Johnson & Johnson ..........................          487,600       40,897,450
                                                                --------------
                                                                    96,196,094
                                                                --------------
PERSONAL CARE 1.5%
Procter & Gamble Co. .......................          418,200       38,186,888
                                                                --------------
TOBACCO 1.7%
Philip Morris Companies, Inc. ..............          842,500       45,073,750
                                                                --------------
Total Consumer Staple ......................                       462,128,225
                                                                --------------
ENERGY 5.7%
OIL 5.5%
Amoco Corp. ................................          399,700       24,131,887
Conoco Inc. Cl. A* .........................          954,000       19,914,750
Exxon Corp. ................................          615,800       45,030,375
Seagull Energy Corp.* ......................          809,800        5,111,863
Shell Transport & Trading PLC ..............          323,700       12,037,594
Total SA Cl. B ADR .........................          766,208       38,118,848
                                                                --------------
                                                                   144,345,317
                                                                --------------
OIL SERVICE 0.2%
Schlumberger Ltd. ..........................           86,524        3,990,919
                                                                --------------
Total Energy ...............................                       148,336,236
                                                                --------------
FINANCE 16.4%
BANK 5.5%
BankAmerica Corp. ..........................        1,020,509       61,358,104
Chase Manhattan Corp. ......................          797,000       54,245,812
U.S. Bancorp ...............................          787,900       27,970,450
                                                                --------------
                                                                   143,574,366
                                                                --------------
FINANCIAL SERVICE 4.7%
American Express Co. .......................          199,200       20,368,200
Federal National Mortgage Association ......          780,400       57,749,600
Household International Inc. ...............          660,800       26,184,200
Merrill Lynch & Company Inc. ...............          252,800       16,874,400
                                                                --------------
                                                                   121,176,400
                                                                --------------
INSURANCE 6.2%
Ace Ltd. ...................................        1,128,600       38,866,162
American General Corp. .....................          423,642       33,044,076
American International Group Inc. ..........          189,100       18,271,788
Citigroup, Inc. ............................          764,000       37,818,000
UNUM Corp. .................................          589,600       34,417,900
                                                                --------------
                                                                   162,417,926
                                                                --------------
Total Finance ..............................                       427,168,692
                                                                --------------
SCIENCE & TECHNOLOGY 15.1%
COMPUTER SOFTWARE & SERVICE 4.5%
Ascend Communications Inc.* ................          300,400       19,751,300
Cadence Design Systems Inc.* ...............          679,800       20,224,050
Cisco Systems Inc.* ........................          366,600       34,025,062
EMC Corp.* .................................          156,400       13,294,000
Microsoft Corp.* ...........................          206,500       28,638,969
                                                                --------------
                                                                   115,933,381
                                                                --------------
ELECTRONIC COMPONENTS 3.7%
Intel Corp. ................................          535,000       63,430,937
Texas Instruments Inc. .....................          391,100       33,463,494
                                                                --------------
                                                                    96,894,431
                                                                --------------
ELECTRONIC EQUIPMENT 0.7%
Lucent Technologies Inc. ...................          171,100       18,821,000
                                                                --------------
OFFICE EQUIPMENT 6.2%
Compaq Computer Corp. ......................          503,300       21,107,144
Hewlett-Packard Co. ........................          264,000       18,034,500
International Business Machines Corp. ......          344,600       63,664,850
Xerox Corp. ................................          493,500       58,233,000
                                                                --------------
                                                                   161,039,494
                                                                --------------
Total Science & Technology .................                       392,688,306
                                                                --------------
UTILITY 10.0%
ELECTRIC 2.6%
FPL Group Inc. .............................          259,000       15,960,875
Texas Utilities Co. ........................          701,800       32,765,287
Unicom Corp. ...............................          487,500       18,799,219
                                                                --------------
                                                                    67,525,381
                                                                --------------
NATURAL GAS 1.1%
Enron Corp. ................................          480,600       27,424,238
                                                                --------------
TELEPHONE 6.3%
AT&T Corp. .................................          484,200       36,436,050
Bell Atlantic Corp. ........................          430,300       22,805,900
MCI WorldCom Inc.* .........................        1,232,700       88,446,225
Qwest Communications International Inc.* ...          336,400       16,820,000
                                                                --------------
                                                                   164,508,175
                                                                --------------
Total Utility ..............................                       259,457,794
                                                                --------------
Total Common Stocks (Cost $1,608,963,817) ..                     2,543,100,107
                                                                --------------
SHORT-TERM INVESTMENTS 5.1%
State Street Navigator Securities Lending
  Prime Portfolio ..........................      132,647,907      132,647,907
                                                                --------------
Total Short-Term Investments (Cost $132,647,907) ..........        132,647,907
                                                                --------------

- -------------------------------------------------------------------------------
                                   PRINCIPAL       MATURITY           VALUE
                                    AMOUNT           DATE            (NOTE 1)
- -------------------------------------------------------------------------------

COMMERCIAL PAPER 2.5%
American Express Credit
  Corp., 4.00% ...........      $  2,405,000       1/08/1999    $    2,405,000
American Express Credit
  Corp., 5.25% ...........        10,630,000       1/11/1999        10,630,000
CIT Group Holdings Inc.,
  5.99% ..................        16,399,000       1/04/1999        16,399,000
General Electric Capital
  Corp., 5.95% ...........           406,000       1/04/1999           406,000
General Electric Capital
  Corp., 5.95% ...........        11,000,000       1/08/1999        11,000,000
Household Finance Corp.,
  5.80% ..................        25,000,000       1/05/1999        25,000,000
                                                                --------------
Total Commercial Paper (Cost $65,840,000) ..................        65,840,000
                                                                --------------
Total Investments (Cost $1,807,451,724) - 105.3% ...........     2,741,588,014
Cash and Other Assets, Less Liabilities - (5.3%) ...........      (137,068,078)
                                                                --------------
Net Assets - 100.0% ........................................    $2,604,519,936
                                                                ==============

Federal Income Tax Information:
At December 31, 1998, the net unrealized appreciation of
  investments based on cost for Federal income tax purposes
  of $1,809,461,818 was as follows:
Aggregate gross unrealized appreciation for all investments
  in which there is an excess of value over tax cost .......    $  957,269,528
Aggregate gross unrealized depreciation for all investments
  in which there is an excess of tax cost over value .......       (25,143,332)
                                                                --------------
                                                                $  932,126,196

- -------------------------------------------------------------------------------
* Non-income-producing securities.
  ADR stands for American Depositary Receipt, representing ownership of
  foreign securities.

The accompanying notes are an integral part of the financial statements.

<PAGE>

STATE STREET RESEARCH INVESTMENT TRUST

- ------------------------------------------------------------------------------
STATEMENT OF ASSETS AND LIABILITIES
- ------------------------------------------------------------------------------
December 31, 1998

ASSETS
Investments, at value (Cost $1,807,451,724) (Note 1)      $2,741,588,014
Cash ...............................................             105,356
Receivable for fund shares sold ....................           5,567,006
Receivable for securities sold .....................           2,670,378
Dividends and interest receivable ..................           2,489,067
Other assets .......................................             280,611
                                                          --------------
                                                           2,752,700,432
LIABILITIES
Payable for collateral received on securities loaned         132,647,907
Payable for securities purchased ...................           6,825,607
Payable for fund shares redeemed ...................           3,564,005
Accrued management fee (Note 2) ....................           2,879,877
Accrued transfer agent and shareholder services
  (Note 2) .........................................           1,173,071
Accrued distribution and service fees (Note 4) .....             940,731
Accrued trustees' fees (Note 2) ....................              33,397
Other accrued expenses .............................             115,901
                                                          --------------
                                                             148,180,496
                                                          --------------
NET ASSETS .........................................      $2,604,519,936
                                                          ==============
Net Assets consist of:
  Undistributed net investment income ..............          $  411,566
  Unrealized appreciation of investments ...........         934,136,290
  Accumulated net realized gain ....................          24,578,091
  Paid-in capital ..................................       1,645,393,989
                                                          --------------
                                                          $2,604,519,936
                                                          ==============

Net Asset Value and redemption price per share
  of Class A shares ($574,857,587/46,500,669 shares)              $12.36
                                                                  ======

Maximum Offering Price per share of Class A shares
  ($12.36/.955) ....................................              $12.94
                                                                  ======

Net Asset Value and offering price per share of
  Class B shares ($944,387,659/77,087,053 shares)*                $12.25
                                                                  ======

Net Asset Value and offering price per share of
   Class C shares ($55,263,263/4,495,491 shares)*                 $12.29
                                                                  ======

Net Asset Value, offering price and redemption
  price per share of Class S shares
  ($1,030,011,427/82,918,341 shares) ...............              $12.42
                                                                  ======

- ------------------------------------------------------------------------------
*Redemption price per share for Class B and Class C is equal to net asset
 value less any applicable contingent deferred sales charge.

The accompanying notes are an integral part of the financial statements.

<PAGE>

STATE STREET RESEARCH INVESTMENT TRUST

- ------------------------------------------------------------------------------
STATEMENT OF OPERATIONS
- ------------------------------------------------------------------------------
For the year ended December 31, 1998

INVESTMENT INCOME
Dividends, net of foreign taxes of $133,440 ..............      $ 26,953,248
Interest (Note 1) ........................................         5,472,332
                                                                ------------
                                                                  32,425,580
EXPENSES
Management fee (Note 2) ..................................         9,708,952
Transfer agent and shareholder services (Note 2) .........         2,650,339
Service fee - Class A (Note 4) ...........................         1,158,478
Distribution and service fees - Class B (Note 4) .........         7,384,066
Distribution and service fees - Class C (Note 4) .........           438,707
Custodian fee ............................................           352,657
Registration fees ........................................           231,028
Reports to shareholders ..................................           221,499
Miscellaneous ............................................            40,957
Trustees' fees (Note 2) ..................................            38,632
Audit fee ................................................            33,398
Legal fees ...............................................            32,059
                                                                ------------
                                                                  22,290,772
Fees paid indirectly (Note 2) ............................          (198,890)
                                                                ------------
                                                                  22,091,882
                                                                ------------

Net investment income ....................................        10,333,698
                                                                ------------
REALIZED AND UNREALIZED GAIN ON INVESTMENTS
Net realized gain on investments (Notes 1 and 3) .........       170,998,002
Net unrealized appreciation of investments ...............       377,577,808
                                                                ------------
Net gain on investments ..................................       548,575,810
                                                                ------------

Net increase in net assets resulting from operations .....      $558,909,508
                                                                ============

The accompanying notes are an integral part of the financial statements.

<PAGE>

STATE STREET RESEARCH INVESTMENT TRUST

- -----------------------------------------------------------------------------
STATEMENT OF CHANGES IN NET ASSETS
- -----------------------------------------------------------------------------

                                               YEARS ENDED DECEMBER 31
                                      ---------------------------------------
                                               1997                1998
- -----------------------------------------------------------------------------

INCREASE (DECREASE) IN NET ASSETS
Operations:
Net investment income ................    $   13,611,975      $   10,333,698
Net realized gain on investments .....       233,740,026         170,998,002
Net unrealized appreciation
  of investments .....................       153,903,428         377,577,808
                                           -------------       -------------
Net increase resulting from
  operations .........................       401,255,429         558,909,508
                                           -------------       -------------
Dividends from net investment income:
  Class A ............................        (2,789,737)         (2,587,460)
  Class B ............................          (870,683)          --
  Class C ............................           (52,743)          --
  Class S ............................        (9,898,812)         (7,493,736)
                                           -------------       -------------
                                             (13,611,975)        (10,081,196)
                                           -------------       -------------
Distributions from net realized gains:
  Class A ............................       (37,498,390)        (39,822,904)
  Class B ............................       (56,883,383)        (65,309,613)
  Class C ............................        (3,712,939)         (3,824,821)
  Class S ............................       (96,107,440)        (76,915,562)
                                           -------------       -------------
                                            (194,202,152)       (185,872,900)
                                           -------------       -------------

Net increase from fund share
  transactions (Note 5) ..............       306,531,257         395,671,890
                                           -------------       -------------
Total increase in net assets..........       499,972,559         758,627,302
NET ASSETS
Beginning of year ....................     1,345,920,075       1,845,892,634
                                           -------------       -------------

End of year (including undistributed
  net investment income of $0 and
  $411,566, respectively) ............    $1,845,892,634      $2,604,519,936
                                          ==============      ==============

The accompanying notes are an integral part of the financial statements.

<PAGE>

STATE STREET RESEARCH INVESTMENT TRUST

- -----------------------------------------------------------------------------
NOTES TO FINANCIAL STATEMENTS
- -----------------------------------------------------------------------------
Decempber 31, 1998

NOTE 1

State Street Research Investment Trust (the "Trust"), is a series of State
Street Research Master Investment Trust (the "Master Trust"), which is a
Massachusetts business trust registered under the Investment Company Act of
1940, as amended, as an open-end management investment company. The Trust is
presently the only series of the Master Trust.

The investment objective of the Trust is to provide long-term growth of
capital and, secondarily, long-term growth of income. In seeking to achieve
its investment objective, the Trust invests primarily in common stocks, or
securities convertible into common stocks, that have long-term growth
potential.

The Trust offers four classes of shares. Until December 31, 1998 Class A
shares were subject to an initial sales charge of up to 4.50% and effective
January 1, 1999 became subject to an initial sales charge of up to 5.75%.
Class A shares pay a service fee equal to 0.25% of average daily net assets.
Class B shares are subject to a contingent deferred sales charge on certain
redemptions made within five years of purchase and pay annual distribution and
service fees of 1.00%. Class B shares automatically convert into Class A
shares (which pay lower ongoing expenses) at the end of eight years after the
issuance of the Class B shares. Effective January 1, 1999, the Trust began
offering Class B(1) shares which are subject to a contingent deferred sales
charge on certain redemptions made within six years. Class C shares are
subject to a contingent deferred sales charge of 1.00% on any shares redeemed
within one year of their purchase. Class C shares also pay annual distribution
and service fees of 1.00%. Class S shares are only offered to certain
retirement accounts, advisory accounts of State Street Research & Management
Company (the "Adviser"), an indirect wholly owned subsidiary of Metropolitan
Life Insurance Company ("Metropolitan"), and special programs. No sales charge
is imposed at the time of purchase or redemption of Class S shares. Class S
shares do not pay any distribution or service fees. The Trust's expenses are
borne pro-rata by each class, except that each class bears expenses, and has
exclusive voting rights with respect to provisions of the Plan of
Distribution, related specifically to that class. The Trustees declare
separate dividends on each class of shares.

The following significant accounting policies are consistently followed by the
Trust in preparing its financial statements, and such policies are in
conformity with generally accepted accounting principles for investment
companies.

A. INVESTMENTS IN SECURITIES
Values for listed securities represent the last sale on national securities
exchanges quoted prior to the close of the New York Stock Exchange. Over-the-
counter securities quoted on the National Association of Securities Dealers
Automated Quotation ("NASDAQ") system are valued at the closing price supplied
through such system. In the absence of recorded sales and for those over-the-
counter securities not quoted on the NASDAQ system, valuations are at the mean
of the closing bid and asked quotations, except for securities that may be
restricted as to public resale, which are valued in accordance with methods
adopted by the Trustees. Security transactions are accounted for on the trade
date (date the order to buy or sell is executed), and dividends declared but
not received are accrued on the ex-dividend date. Interest income is
determined on the accrual basis. Realized gains and losses from security
transactions are reported on the basis of identified cost of securities
delivered.

B. FEDERAL INCOME TAXES
No provision for Federal income taxes is necessary since the Trust has elected
to qualify under Subchapter M of the Internal Revenue Code and maintains a
policy to distribute all of its taxable income, including net realized capital
gains, within the prescribed time periods. It is also the intention of the
Trust to distribute an amount sufficient to avoid imposition of any Federal
Excise Tax under Section 4982 of the Internal Revenue Code.

C. DIVIDENDS
Dividends from net investment income are declared and paid or reinvested
quarterly. Net realized capital gains are distributed annually, unless
additional distributions are required for compliance with applicable tax
regulations. For the year ended December 31, 1998, the Trust has designated as
long-term $185,727,496 of the distributions from net realized gains.

Income dividends and capital gain distributions are determined in accordance
with Federal income tax regulations which may differ from generally accepted
accounting principles. The difference is due to the disposition of securities
that have different bases for financial reporting and tax purposes.

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

E. SECURITIES LENDING
The Trust may seek additional income by lending portfolio securities to
qualified institutions. The Trust will receive cash or securities as
collateral in an amount equal to at least 100% of the current market value of
any loaned securities plus accrued interest. By reinvesting any cash
collateral it receives in these transactions, the Fund could realize
additional gains and losses. If the borrower fails to return the securities
and the value of the collateral has declined during the term of the loan, the
Trust will bear the loss. At December 31, 1998, the value of the securities
loaned and the value of collateral were $128,979,689 and $132,647,907,
respectively. During the year ended December 31, 1998, income from securities
lending amounted to $230,466 and is included in interest income.

NOTE 2

Prior to August 18, 1998, the Adviser earned monthly fees at an annual rate of
0.41% of the Trust's average daily net assets.
Effective August 18, 1998, the management fee is 0.55% of the first $500
million of net assets, annually, 0.50% of the next $500 million, and 0.45% of
any amount over $1 billion. In consideration of these fees, the Adviser
furnishes the Trust with management, investment advisory, statistical and
research facilities and services. The Adviser also pays all salaries, rent and
certain other expenses of management. During the year ended December 31, 1998,
the fees pursuant to such agreement amounted to $9,708,952.

State Street Research Service Center, a division of State Street Research
Investment Services, Inc., the Trust's principal underwriter (the
"Distributor"), an indirect wholly owned subsidiary of Metropolitan, provides
certain shareholder services to the Trust such as responding to inquiries and
instructions from investors with respect to the purchase and redemption of
shares of the Trust. In addition, Metropolitan receives a fee for maintenance
of the accounts of certain shareholders who are participants in sponsored
arrangements, employee benefit plans and similar programs or plans, through or
under which shares of the Trust may be purchased. During the year ended
December 31, 1998, the amount of such shareholder servicing and account
expenses was $1,030,766.

The Trust has entered into an arrangement with its transfer agent whereby
credits realized as a result of uninvested cash balances were used to reduce a
portion of the Trust's expense. During the year ended December 31, 1998, the
Trust's transfer agent fees were reduced by $198,890 under this arrangement.

The fees of the Trustees not currently affiliated with the Adviser amounted to
$38,632 during the year ended December 31, 1998.

NOTE 3

For the year ended December 31, 1998, exclusive of short-term investments and
U.S. Government obligations, purchases and sales of securities aggregated
$1,643,259,308 and $1,399,613,709, respectively.

NOTE 4

The Trust has adopted a Plan of Distribution pursuant to Rule 12b-1 (the
"Plan") under the Investment Company Act of 1940, as amended. Under the Plan,
the Trust pays annual service fees to the Distributor at a rate of 0.25% of
average daily net assets for Class A, Class B and Class C shares. In addition,
the Trust pays annual distribution fees of 0.75% of average daily net assets
for Class B and Class C shares. The Distributor uses such payments for
personal services and/or the maintenance or servicing of shareholder accounts,
to reimburse securities dealers for distribution and marketing services, to
furnish ongoing assistance to investors and to defray a portion of its
distribution and marketing expenses. For the year ended December 31, 1998,
fees pursuant to such plan amounted to $1,158,478, $7,384,066 and $438,707 for
Class A, Class B and Class C shares, respectively.

The Trust has been informed that the Distributor and MetLife Securities, Inc.,
a wholly owned subsidiary of Metropolitan, earned initial sales charges
aggregating $519,944 and $3,141,854, respectively, on sales of Class A shares
of the Trust during the year ended December 31, 1998, and that MetLife
Securities, Inc. earned commissions aggregating $7,364,030 on sales of Class B
shares, and that the Distributor collected contingent deferred sales charges
of $1,147,614 and $4,282 on redemptions of Class B and Class C shares,
respectively, during the same period.

NOTE 5

The Trustees have the authority to issue an unlimited number of shares of
beneficial interest, $.001 par value per share.

Share transactions were as follows:

<TABLE>
<CAPTION>
                                                        YEARS ENDED DECEMBER 31
                                 ----------------------------------------------------------------------
                                                1997                                1998
                                 ----------------------------------  ----------------------------------
CLASS A                                SHARES            AMOUNT            SHARES            AMOUNT
- -------------------------------------------------------------------------------------------------------
<S>                                  <C>              <C>                <C>            <C>
Shares sold ...................      11,892,218       $125,284,553       15,387,705     $  179,548,411
Issued upon reinvestment of:
  Distributions from net
    realized gains ............       3,437,670         36,542,436        3,305,725         38,989,534
  Dividends from net investment
    income ....................         269,405          2,789,580          208,775          2,431,646
Shares redeemed ...............      (4,933,408)       (51,867,529)      (7,738,830)       (89,464,550)
                                     ----------       ------------       ----------     --------------
Net increase ..................      10,665,885       $112,749,040       11,163,375     $  131,505,041
                                     ==========       ============       ==========     ==============

<CAPTION>
CLASS B                                SHARES            AMOUNT            SHARES            AMOUNT
- ------------------------------------------------------------------------------------------------------
<S>                                  <C>              <C>                <C>              <C>
Shares sold ...................      19,674,761       $206,270,802       28,941,723       $335,668,941
Issued upon reinvestment of:
  Distributions from net
    realized gains ............       5,211,853         54,985,047        5,418,219         63,334,450
  Dividend from net investment
    income ....................          79,052            792,716         --                --
Shares redeemed ...............      (5,930,757)       (62,779,979)     (11,279,857)      (129,650,410)
                                     ----------       ------------       ----------       ------------
Net increase ..................      19,034,909       $199,268,586       23,080,085       $269,352,981
                                     ==========       ============       ==========       ============

<CAPTION>
CLASS C                                SHARES            AMOUNT            SHARES            AMOUNT
- ------------------------------------------------------------------------------------------------------
<S>                                   <C>            <C>                  <C>            <C>
Shares sold ...................       1,100,245      $  11,484,215        1,707,702       $ 19,923,326
Issued upon reinvestment of:
  Distributions from net
    realized gains ............         334,491          3,539,567          306,530          3,595,984
  Dividend from net investment
    income ....................           3,760             37,536         --                --
Shares redeemed ...............        (775,363)        (8,173,619)      (1,015,775)       (11,590,128)
                                     ----------       ------------       ----------       ------------
Net increase ..................         663,133       $  6,887,699          998,457       $ 11,929,182
                                     ==========       ============       ==========       ============

<CAPTION>
CLASS S                                SHARES            AMOUNT            SHARES            AMOUNT
- -------------------------------------------------------------------------------------------------------
<S>                                   <C>            <C>                  <C>            <C>
Shares sold ...................       1,718,321       $ 18,233,635        2,501,260       $ 29,464,708
Issued upon reinvestment of:
  Distributions from net
    realized gains ............       5,286,697         56,461,922        3,427,990         40,551,340
  Dividends from net investment
    income ....................         361,083          3,744,987          285,270          3,357,017
Shares redeemed ...............      (8,574,756)       (90,814,612)      (7,808,814)       (90,488,379)
                                     ----------       ------------       ----------       ------------
Net decrease ..................      (1,208,655)      $(12,374,068)      (1,594,294)      $(17,115,314)
                                     ==========       ============       ==========       ============
</TABLE>
<PAGE>

STATE STREET RESEARCH INVESTMENT TRUST

- -------------------------------------------------------------------------------
FINANCIAL HIGHLIGHTS
- -------------------------------------------------------------------------------
For a share outstanding throughout each year:
<TABLE>
<CAPTION>
                                                                                     CLASS A
                                              -------------------------------------------------------------------------------------
                                                                            YEARS ENDED DECEMBER 31
                                              ------------------------------------------------------------------------------------
                                                    1994             1995(a)          1996(a)          1997(a)          1998(a)
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                <C>              <C>              <C>              <C>              <C>             <C>
NET ASSET VALUE, BEGINNING OF YEAR ($)              8.69             7.74             9.16             9.07            10.41
                                                   -----            -----            -----            -----            -----
  Net investment income ($)                         0.11             0.14             0.12             0.10             0.07
  Net realized and unrealized gain (loss) on
    investments ($)                                (0.44)            2.39             1.80             2.54             2.89
                                                   -----            -----            -----            -----            -----
TOTAL FROM INVESTMENT OPERATIONS ($)               (0.33)            2.53             1.92             2.64             2.96
                                                   -----            -----            -----            -----            -----
  Dividends from net investment income ($)         (0.12)           (0.13)           (0.13)           (0.10)           (0.06)
  Distributions from net realized gains ($)        (0.50)           (0.98)           (1.87)           (1.20)           (0.95)
  Distribution in excess of net realized
    gains ($)                                         --               --            (0.01)              --               --
                                                   -----            -----            -----            -----            -----
TOTAL DISTRIBUTIONS ($)                            (0.62)           (1.11)           (2.01)           (1.30)           (1.01)
                                                   -----            -----            -----            -----            -----
NET ASSET VALUE, END OF YEAR ($)                    7.74             9.16             9.07            10.41            12.36
                                                   =====            =====            =====            =====            =====
Total return(b) (%)                                (3.84)           32.85            21.03            28.91            29.12
RATIOS/SUPPLEMENTAL DATA:
Net assets at end of year ($ thousands)           92,137          135,676          223,868          367,759          574,858
Ratio of operating expenses to average net
  assets (%)                                        0.89             0.78             0.75             0.76             0.85
Ratio of net investment income to average
  net assets (%)                                    1.26             1.54             1.17             0.90             0.63
Portfolio turnover rate (%)                        33.08            39.21            73.51            75.21            66.32

<CAPTION>
                                                                                     CLASS B
                                              -------------------------------------------------------------------------------------
                                                                            YEARS ENDED DECEMBER 31
                                              ------------------------------------------------------------------------------------
                                                    1994             1995(a)          1996(a)          1997(a)          1998(a)
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                <C>              <C>              <C>              <C>              <C>             <C>
NET ASSET VALUE, BEGINNING OF YEAR ($)              8.66             7.72             9.13             9.03            10.34
                                                   -----            -----            -----            -----            -----
  Net investment income (loss) ($)                  0.06             0.07             0.04             0.02            (0.01)
  Net realized and unrealized gain (loss) on
    investments ($)                                (0.44)            2.38             1.80             2.51             2.87
                                                   -----            -----            -----            -----            -----
TOTAL FROM INVESTMENT OPERATIONS ($)               (0.38)            2.45             1.84             2.53             2.86
                                                   -----            -----            -----            -----            -----
  Dividends from net investment income ($)         (0.06)           (0.06)           (0.06)           (0.02)              --
  Distributions from net realized gains ($)        (0.50)           (0.98)           (1.87)           (1.20)           (0.95)
  Distribution in excess of net realized
    gains ($)                                         --               --            (0.01)              --               --
                                                   -----            -----            -----            -----            -----
TOTAL DISTRIBUTIONS ($)                            (0.56)           (1.04)           (1.94)           (1.22)           (0.95)
                                                   -----            -----            -----            -----            -----
NET ASSET VALUE, END OF YEAR ($)                    7.72             9.13             9.03            10.34            12.25
                                                   =====            =====            =====            =====            =====
Total return(b) (%)                                (4.43)           31.86            20.15            27.80            28.26
RATIOS/SUPPLEMENTAL DATA:
Net assets at end of year ($ thousands)          113,301          183,446          315,766          558,568          944,388
Ratio of operating expenses to average net
  assets (%)                                        1.64             1.53             1.50             1.51             1.60
Ratio of net investment income (loss) to
  average net assets (%)                            0.51             0.79             0.41             0.15            (0.12)
Portfolio turnover rate (%)                        33.08            39.21            73.51            75.21            66.32

- -----------------------------------------------------------------------------------------------------------------------------------
(a)Per-share figures have been calculated using the average shares method.
(b)Does not reflect any front-end or contingent deferred sales charges.
</TABLE>

<PAGE>

STATE STREET RESEARCH INVESTMENT TRUST

<TABLE>
<CAPTION>
                                                                                   CLASS C
                                           ----------------------------------------------------------------------------------------
                                                                           YEARS ENDED DECEMBER 31
                                           ---------------------------------------------------------------------------------------
                                                  1994             1995(a)          1996(a)          1997(a)            1998(a)
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                <C>            <C>              <C>              <C>              <C>               <C>
NET ASSET VALUE, BEGINNING OF YEAR ($)            8.68             7.74             9.15             9.05              10.38
                                                 -----            -----            -----            -----              -----
  Net investment income (loss) ($)                0.05             0.07             0.04             0.02              (0.01)
  Net realized and unrealized gain (loss)
    on investments ($)                           (0.43)            2.38             1.79             2.53               2.87
                                                 -----            -----            -----            -----              -----
TOTAL FROM INVESTMENT OPERATIONS ($)             (0.38)            2.45             1.83             2.55               2.86
                                                 -----            -----            -----            -----              -----
  Dividends from net investment income ($)       (0.06)           (0.06)           (0.05)           (0.02)                --
  Distributions from net realized gains ($)      (0.50)           (0.98)           (1.87)           (1.20)             (0.95)
  Distribution in excess of net realized
    gains ($)                                       --               --            (0.01)              --                 --
                                                 -----            -----            -----            -----              -----
TOTAL DISTRIBUTIONS ($)                          (0.56)           (1.04)           (1.93)           (1.22)             (0.95)
                                                 -----            -----            -----            -----              -----
NET ASSET VALUE, END OF YEAR ($)                  7.74             9.15             9.05            10.38              12.29
                                                 =====            =====            =====            =====              =====
Total return(b) (%)                              (4.45)           31.75            20.09            27.93              28.15
RATIOS/SUPPLEMENTAL DATA:
Net assets at end of year ($ thousands)         11,707           16,841           25,658           36,290             55,263
Ratio of operating expenses to average
  net assets (%)                                  1.64             1.53             1.50             1.51               1.60
Ratio of net investment income (loss) to
  average net assets (%)                          0.51             0.79             0.42             0.15              (0.13)
Portfolio turnover rate (%)                      33.08            39.21            73.51            75.21              66.32

<CAPTION>
                                                                                   CLASS S
                                           ----------------------------------------------------------------------------------------
                                                                           YEARS ENDED DECEMBER 31
                                           ---------------------------------------------------------------------------------------
                                                  1994             1995(a)          1996(a)          1997(a)            1998(a)
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                <C>            <C>              <C>              <C>              <C>               <C>
NET ASSET VALUE, BEGINNING OF YEAR ($)            8.70             7.76             9.18             9.11              10.45
                                                 -----            -----            -----            -----              -----
  Net investment income ($)                       0.13             0.16             0.14             0.12               0.10
  Net realized and unrealized gain (loss)
    on investments ($)                           (0.43)            2.39             1.82             2.54               2.91
                                                 -----            -----            -----            -----              -----
TOTAL FROM INVESTMENT OPERATIONS ($)             (0.30)            2.55             1.96             2.66               3.01
                                                 -----            -----            -----            -----              -----
  Dividends from net investment income ($)       (0.14)           (0.15)           (0.15)           (0.12)             (0.09)
  Distributions from net realized gains ($)      (0.50)           (0.98)           (1.87)           (1.20)             (0.95)
  Distribution in excess of net realized
    gains ($)                                       --               --            (0.01)              --                 --
                                                 -----            -----            -----            -----              -----
TOTAL DISTRIBUTIONS ($)                          (0.64)           (1.13)           (2.03)           (1.32)             (1.04)
                                                 -----            -----            -----            -----              -----
NET ASSET VALUE, END OF YEAR ($)                  7.76             9.18             9.11            10.45              12.42
                                                 =====            =====            =====            =====              =====
Total return(b) (%)                              (3.47)           33.07            21.48            29.08              29.51
RATIOS/SUPPLEMENTAL DATA:
Net assets at end of year ($ thousands)        627,551          738,649          780,627          883,276          1,030,011
Ratio of operating expenses to average
  net assets (%)                                  0.65             0.54             0.50             0.51               0.60
Ratio of net investment income to average
  net assets (%)                                  1.54             1.81             1.44             1.17               0.88
Portfolio turnover rate (%)                      33.08            39.21            73.51            75.21              66.32
- -----------------------------------------------------------------------------------------------------------------------------------
(a)Per-share figures have been calculated using the average shares method.
(b)Does not reflect any front-end or contingent deferred sales charges.
</TABLE>

<PAGE>

- -------------------------------------------------------------------------------
REPORT OF INDEPENDENT ACCOUNTANTS
- -------------------------------------------------------------------------------

TO THE TRUSTEES OF STATE STREET RESEARCH MASTER INVESTMENT TRUST
AND SHAREHOLDERS OF STATE STREET RESEARCH INVESTMENT TRUST:

In our opinion, the accompanying statement of assets and liabilities, including
the investment portfolio, and the related statements of operations and of
changes in net assets and the financial highlights present fairly, in all
material respects, the financial position of State Street Research Investment
Trust (a series of State Street Research Master Investment Trust, hereafter
referred to as the "Trust") at December 31, 1998, and the results of its
operations, the changes in its net assets and the financial highlights for the
periods indicated, in conformity with generally accepted accounting principles.
These financial statements and financial highlights (hereafter referred to as
"financial statements") are the responsibility of the Trust's management; our
responsibility is to express an opinion on these financial statements based on
our audits. We conducted our audits of these financial statements in accordance
with generally accepted auditing standards which require that we plan and
perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements, assessing the accounting principles used and significant estimates
made by management, and evaluating the overall financial statement presentation.
We believe that our audits, which included confirmation of securities at
December 31, 1998 by correspondence with the custodian and brokers, provide a
reasonable basis for the opinion expressed above.

PricewaterhouseCoopers LLP
Boston, Massachusetts
February 12, 1999

<PAGE>

STATE STREET RESEARCH INVESTMENT TRUST

- -------------------------------------------------------------------------------
MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE
- -------------------------------------------------------------------------------

State Street Research Investment Trust provided shareholders with strong
performance during the year. For the 12 months ended December 31, 1998 Class A
shares returned 29.12% [does not reflect sales charge]. The Fund outperformed
the Lipper average growth and income fund, which was up 15.61%, and
outperformed the S&P 500, which gained 28.60% for the same period.

The Fund currently focuses on large companies with market leadership as well
as income-producing securities that offer a potential cushion against stock
market volatility.

Investments in technology, telecommunications, financial services and retail
stocks drove the Fund's performance for the year. Although the Fund had
relatively low exposure to the basic materials sector, investments in chemical
stocks and defensive sectors, such as utilities, food and energy, were a drag
on performance. The Fund also benefited from overweighting the supermarket
industry and by targeting financial companies.

December 31, 1998

          CHANGE IN VALUE OF $10,000 BASED ON THE S&P 500 COMPARED TO
            CHANGE IN VALUE OF $10,000 INVESTED IN INVESTMENT TRUST

                                 CLASS A SHARES

- -----------------------------
 Average Annual Total Return
- -----------------------------
1 Year    5 Years    10 Years
- -----------------------------
23.31%    19.70%      17.01%
- -----------------------------

                                              VALUE OF
                              VALUE OF       ACCOUNT OF
                             ACCOUNT AT      S&P 500 AT
DATE                          YEAR END        YEAR END
- ----                          --------        --------
12/31/88                      $ 9,550          $10,000
12/31/89                       12,620           13,163
12/31/90                       12,499           12,754
12/31/91                       16,009           16,631
12/31/92                       17,015           17,896
12/31/93                       18,700           19,696
12/31/94                       17,983           19,955
12/31/95                       23,890           27,445
12/31/96                       28,913           33,742
12/31/97                       37,271           44,995
12/31/98                       48,125           57,864

                                 CLASS B SHARES

- -----------------------------
 Average Annual Total Return
- -----------------------------
1 Year    5 Years    10 Years
- -----------------------------
23.26%    19.75%      17.07%
- -----------------------------

                                              VALUE OF
                              VALUE OF       ACCOUNT OF
                             ACCOUNT AT      S&P 500 AT
DATE                          YEAR END        YEAR END
- ----                          --------        --------
12/31/88                      $10,000          $10,000
12/31/89                       13,214           13,163
12/31/90                       13,088           12,754
12/31/91                       16,764           16,631
12/31/92                       17,817           17,896
12/31/93                       19,484           19,696
12/31/94                       18,622           19,955
12/31/95                       24,555           27,445
12/31/96                       29,504           33,742
12/31/97                       37,706           44,995
12/31/98                       48,362           57,864

                                 CLASS C SHARES

- -----------------------------
 Average Annual Total Return
- -----------------------------
1 Year    5 Years    10 Years
- -----------------------------
27.15%    19.90%      17.07%
- -----------------------------

                                              VALUE OF
                              VALUE OF       ACCOUNT OF
                             ACCOUNT AT      S&P 500 AT
DATE                          YEAR END        YEAR END
- ----                          --------        --------
12/31/88                      $10,000          $10,000
12/31/89                       13,214           13,163
12/31/90                       13,088           12,754
12/31/91                       16,764           16,631
12/31/92                       17,817           17,896
12/31/93                       19,513           19,696
12/31/94                       18,644           19,955
12/31/95                       24,564           27,445
12/31/96                       29,497           33,742
12/31/97                       37,735           44,995
12/31/98                       48,357           57,864

                                 CLASS S SHARES

- -----------------------------
 Average Annual Total Return
- -----------------------------
1 Year    5 Years    10 Years
- -----------------------------
29.51%    21.14%      17.75%
- -----------------------------

                                              VALUE OF
                              VALUE OF       ACCOUNT OF
                             ACCOUNT AT      S&P 500 AT
DATE                          YEAR END        YEAR END
- ----                          --------        --------
12/31/88                      $10,000          $10,000
12/31/89                       13,214           13,163
12/31/90                       13,088           12,754
12/31/91                       16,764           16,631
12/31/92                       17,817           17,896
12/31/93                       19,635           19,696
12/31/94                       18,953           19,955
12/31/95                       24,221           27,445
12/31/96                       30,639           33,742
12/31/97                       39,548           44,995
12/31/98                       51,218           57,864

Keep in mind that past performance is no guarantee of future results. The
fund's share price, yield and return will fluctuate, and you may have a gain
or loss when you sell your shares. All returns assume reinvestment of capital
gain distributions and income dividends at net asset value. Performance
reflects a maximum 4.5% Class A share front-end sales charge, or 5% Class B
share or 1% Class C share contingent deferred sales charge, where applicable.
The fund's returns include performance before the creation of share classes.
If this performance reflected the share classes' current 12b-1 fees, the
fund's returns may have been lower. During the periods prior to 1990 that
shares of the Fund were not available to the public, the Fund was not subject
to the cash inflows and higher redemptions and expenses that have occurred
during the Fund's current continuous public offering. Class S shares, offered
without a sales charge, are available only through certain employee benefit
plans and special programs. The S&P 500 (officially the "Standard and Poor's
500 Composite Stock Price Index") is an unmanaged index of 500 U.S. stocks.
The index does not take sales charges into consideration. Direct investment in
the index is not possible; results are for illustrative purposes only.

The performance data shown above do not reflect an increase in the maximum
Class A sales charge from 4.5% to 5.75%, effective as of 1/1/99. At the new,
higher Class A sales charge, the performance would have been lower. Assuming
the increased sales charge was in effect, performance would have been as
follows:

                                   1 YEAR         5 YEARS         10 YEARS
- --------------------------------------------------------------------------------
Class A                            21.70%          19.39%          16.86%

<PAGE>
<TABLE>
<CAPTION>
STATE STREET RESEARCH INVESTMENT TRUST
- --------------------------------------------------------------------------------------------------------------
FUND INFORMATION, OFFICERS AND TRUSTEES OF
STATE STREET RESEARCH MASTER INVESTMENT TRUST
- --------------------------------------------------------------------------------------------------------------

FUND INFORMATION                           TRUSTEES
<S>                                        <C>                                    <C>
STATE STREET RESEARCH                      RALPH F. VERNI                         MICHAEL S. SCOTT MORTON
INVESTMENT TRUST                           Chairman of the Board,                 Jay W. Forrester Professor of
One Financial Center                       President, Chief Executive             Management, Sloan School of
Boston, MA 02111                           Officer and Director,                  Management, Massachusetts
                                           State Street Research &                Institute of Technology
INVESTMENT ADVISER                         Management Company
State Street Research &
Management Company                         BRUCE R. BOND                          OFFICERS
One Financial Center                       Chairman of the Board,
Boston, MA 02111                           Chief Executive Officer and            RALPH F. VERNI
                                           President                              Chairman of the Board,
DISTRIBUTOR                                PictureTel Corporation                 President and
State Street Research                                                             Chief Executive Officer
Investment Services, Inc.                  STEVE A. GARBAN
One Financial Center                       Former Senior Vice President           PETER C. BENNETT
Boston, MA 02111                           for Finance and Operations and         Vice President
                                           Treasurer, The Pennsylvania
SHAREHOLDER SERVICES                       State University                       DUDLEY F. WADE
State Street Research                                                             Vice President
Service Center                             MALCOLM T. HOPKINS
P.O. Box 8408                              Former Vice Chairman of the            JAMES M. WEISS
Boston, MA 02266-8408                      Board and Chief Financial              Vice President
1-800-562-0032                             Officer, St. Regis Corp.
                                                                                  JOHN T. WILSON
CUSTODIAN                                  EDWARD M. LAMONT                       Vice President
State Street Bank and                      Formerly in banking
Trust Company                              (with an affiliate of                  GERARD P. MAUS
225 Franklin Street                        J.P. Morgan & Co. in New York);        Treasurer
Boston, MA 02110                           presently engaged in private
                                           investments and civic affairs          JOSEPH W. CANAVAN
INDEPENDENT ACCOUNTANTS                                                           Assistant Treasurer
PricewaterhouseCoopers LLP                 ROBERT A. LAWRENCE
One Post Office Square                     Former Partner, Saltonstall & Co.      DOUGLAS A. ROMICH
Boston, MA 02109                                                                  Assistant Treasurer
                                           DEAN O. MORTON
                                           Former Executive Vice President        FRANCIS J. MCNAMARA, III
                                           Chief Operating Officer and            Secretary and General Counsel
                                           Director, Hewlett-Packard Company
                                                                                  DARMAN A. WING
                                           SUSAN M. PHILLIPS                      Assistant Secretary and
                                           Dean, School of Business and           Assistant General Counsel
                                           Public Management, George
                                           Washington University; former          AMY L. SIMMONS
                                           Member of the Board of Governors       Assistant Secretary
                                           of the Federal Reserve System and
                                           Chairman and Commissioner of
                                           the Commodity Futures Trading
                                           Commission

                                           TOBY ROSENBLATT
                                           President,
                                           The Glen Ellen Company
                                           Vice President,
                                           Founders Investments Ltd.
</TABLE>
<PAGE>

                                                            -------------------
STATE STREET RESEARCH INVESTMENT TRUST                          Bulk Rate
One Financial Center                                          U.S. Postage
Boston, MA 02111                                                  PAID
                                                               PermiT #20
                                                            Holliston, Ma 01746
                                                            -------------------

QUESTIONS? COMMENTS?

Call us at 1-800-562-0032 or
  [hearing-impaired 1-800-676-7876]

Write us at:
    State Street Research
    Service Center
    P.O. Box 8408
    Boston, MA 02266-8408

E-mail us at:
    [email protected]

Internet site
    www.ssrfunds.com

[Graphic Omitted]   STATE STREET RESEARCH

This report is prepared for the general information of current shareholders.

When used in the general solicitation of investors, this report must be
accompanied or preceded by a current State Street Research Growth Fund
prospectus. The prospectus contains more complete information, including sales
charges and expenses. Please read the prospectus carefully before investing.

When used after March 31, 1999, this report must be accompanied by a current
Quarterly Performance Update.

Portfolio changes should not be considered recommendations for action by
individual investors.

The Dalbar awards recognize quality shareholder service and should not be
considered a rating of fund performance. The survey included mutual fund
complexes that volunteered or were otherwise selected to participate and was not
industry-wide.

CONTROL NUMBER: (exp0200) SSR-LD                                   IT-751D-0299


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