MASSACHUSETTS MUTUAL VARIABLE ANNUITY SEPARATE ACCOUNT 1
N-30D, 1997-08-19
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<PAGE>
 
A Message To Our Contract Owners:

We are pleased to forward this combined Semiannual Report of the segment of
Massachusetts Mutual Variable Annuity Separate Account 1 ("Separate Account 1")
pertaining to Flex Extra (Qualified) (the "Segment"), the four series of the MML
Series Investment Fund, and the three Funds of the Oppenheimer Variable Account
Funds available to owners of Flex Extra Contracts.  These reports are for the
period ended June 30, 1997.

The Semiannual Report for the Segment begins on page 3. The Segment has net
assets of $3,583,782,438 as of June 30, 1997. Net asset values per accumulation
unit for the MML Equity, MML Money Market, MML Managed Bond, MML Blend,
Oppenheimer Capital Appreciation, Oppenheimer Global Securities and Oppenheimer
Strategic Bond Divisions as of June 30, 1997 are shown in detail in the table on
page 3.

The Semiannual Report for four series of the MML Series Investment Fund begins
on page 11.  This report contains a detailed description of the financial
results of the MML Equity Fund, MML Money Market Fund, MML Managed Bond Fund and
MML Blend Fund for the period ended June 30, 1997.

The Semiannual Report for the Oppenheimer Variable Account Funds begins on page
36.  This report contains a detailed description of the financial results of the
Oppenheimer Capital Appreciation Fund, Oppenheimer Global Securities Fund and
Oppenheimer Strategic Bond Fund for the period ended June 30, 1997.

We appreciate the interest and confidence you have shown in Separate Account 1.


                                MASSACHUSETTS MUTUAL LIFE INSURANCE COMPANY

                                /s/ Thomas B. Wheeler

                                Thomas B. Wheeler
                                Chairman and Chief Executive Officer

August 1, 1997

                                       1
<PAGE>
 
                               Table of Contents

Massachusetts Mutual Variable Annuity Separate Account 1
<TABLE> 
<S>                                                                                            <C> 
Flex Extra (Qualified)
  Statement of Assets and Liabilities as of June 30, 1997....................................      3
  Statement of Operations For the Six Months Ended June 30, 1997.............................      4
  Statement of Changes in Net Assets For the Six Months Ended June 30, 1997 and 1996.........    5-6
  Notes to Financial Statements..............................................................   7-10

MML Series Investment Fund
  To Our Shareholders........................................................................  11-14
  Statement of Assets and Liabilities as of June 30, 1997....................................     15
  Statement of Operations For the Six Months Ended June 30, 1997.............................     16
  Statement of Changes in Net Assets For the Six Months Ended June 30, 1997 and
    For the Year Ended December 31, 1996.....................................................     17
  Financial Highlights.......................................................................  18-20
  Schedule of Investments as of June 30, 1997
    MML Equity Fund..........................................................................  21-22
    MML Money Market Fund....................................................................     23
    MML Managed Bond Fund....................................................................  24-26
    MML Blend Fund...........................................................................  27-32
  Notes to Financial Statements..............................................................  33-35

Oppenheimer Variable Account Funds
  Oppenheimer Fund Managers' Message.........................................................  36-39
  Statement of Assets and Liabilities as of June 30, 1997....................................  40-42
  Statement of Operations For the Six Months Ended June 30, 1997.............................  43-45
  Statement of Changes in Net Assets For the Six Months Ended June 30, 1997 and
    For the Year Ended December 31, 1996.....................................................  46-48
  Financial Highlights.......................................................................  49-51
  Statement of Investments as of June 30, 1997
    Oppenheimer Capital Appreciation Fund....................................................  52-56
    Oppenheimer Global Securities Fund.......................................................  57-63
    Oppenheimer Strategic Bond Fund..........................................................  64-84
    Notes to Financial Statements............................................................  85-94

</TABLE>

                                       2
<PAGE>
 
Massacusetts Mutual Variable Annuity Separtate Account 1 - Flex Extra 
(Qualified)

STATEMENT OF ASSETS AND LIABILITIES

June 30, 1997
(Unaudited)

<TABLE>
<CAPTION>
                                                                          MML            MML                          Oppenheimer
                                                          MML            Money          Managed          MML            Capital
                                                         Equity          Market          Bond           Blend         Appreciation
                                                        Division        Division       Division        Division         Division
                                                      ------------    ------------   ------------    -----------      ------------ 
<S>                                                  <C>              <C>            <C>            <C>              <C>
ASSETS
Investments
  Number of shares (Note 2).........................     38,429,030     74,077,904      8,554,964       66,526,244      6,736,647
                                                     ==============   ============   ============   ==============   ============
  Identified cost (Note 3B)......................... $  865,652,239   $ 74,077,904   $104,790,707   $1,205,606,528   $235,251,772
                                                     ==============   ============   ============   ==============   ============
  Value (Note 3A)................................... $1,328,923,429   $ 74,077,904   $104,424,642   $1,612,953,212   $262,998,715
Dividends receivable................................             --        314,667             --               --             --
Receivable for accumulation units sold..............        963,903        319,537        188,811          628,066        484,878
Divisional transfers pending settlement.............       (274,706)       277,446        (53,819)         (11,921)        14,868
Other assets........................................          1,429             --            171            3,926            212
                                                     --------------   ------------   ------------   --------------   ------------
  Total assets......................................  1,329,614,055     74,989,554    104,559,805    1,613,573,283    263,498,673
                                                     --------------   ------------   ------------   --------------   ------------
LIABILITIES
Redemptions pending settlement......................      1,893,975        122,997         69,897        2,488,158        258,377
Annuitant mortality fluctuation reserve (Note 3D)...          9,043            349          1,233           40,319            133

Payable to Massachusetts Mutual
  Life Insurance Company............................      4,103,799        249,758        330,496        5,263,995        787,069
                                                     --------------   ------------   ------------   --------------   ------------
  Total liabilities.................................      6,006,817        373,104        401,626        7,792,472      1,045,579
                                                     --------------   ------------   ------------   --------------   ------------
NET ASSETS.......................................... $1,323,607,238   $ 74,616,450   $104,158,179   $1,605,780,811   $262,453,094
                                                     ==============   ============   ============   ==============   ============
Net assets:
Accumulation units - Value.......................... $1,323,305,821   $ 74,604,839   $104,117,070   $1,604,436,845   $262,448,673
Annuity reserves (Note 3E)..........................        301,417         11,611         41,109        1,343,966          4,421
                                                     --------------   ------------   ------------   --------------   ------------
  Net assets........................................ $1,323,607,238   $ 74,616,450   $104,158,179   $1,605,780,811   $262,453,094
                                                     ==============   ============   ============   ==============   ============
Accumulation units (Note 7)
  Contractowners....................................    394,039,277     48,139,522     50,952,995      573,296,929    158,785,491
  Massachusetts Mutual Life  Insurance Company......             --             --             --               --          5,000
                                                     --------------   ------------   ------------   --------------   ------------
    Total units.....................................    394,039,277     48,139,522     50,952,995      573,296,929    158,790,491
                                                     ==============   ============   ============   ==============   ============
NET ASSET VALUE PER ACCUMULATION UNIT
June 30, 1997.......................................          $3.36          $1.55          $2.04            $2.80          $1.65
June 30, 1996.......................................           2.64           1.49           1.91             2.36           1.56
June 30, 1995.......................................           2.18           1.44           1.85             2.06           1.13
June 30, 1994.......................................           1.83           1.39           1.66             1.80             --
June 30, 1993.......................................           1.78           1.36           1.71             1.77             --

<CAPTION>
                                                        Oppenheimer    Oppenheimer
                                                          Global        Strategic
                                                        Securities        Bond
                                                         Division       Division
                                                       ------------   ------------ 
<S>                                                    <C>            <C> 
ASSETS
Investments
  Number of shares (Note 2).........................      7,988,271     10,381,884
                                                       ============   ============
  Identified cost (Note 3B).........................   $130,306,502   $ 51,361,047
                                                       ============   ============
  Value (Note 3A)...................................   $162,161,892   $ 52,739,970
Dividends receivable................................             --             --
Receivable for accumulation units sold..............        261,752        133,443
Divisional transfers pending settlement.............         61,028        (12,896)
Other assets........................................            182            183
                                                       ------------   ------------
  Total assets......................................    162,484,854     52,860,700
                                                       ============   ============
LIABILITIES
Redemptions pending settlement......................         65,245          3,218
Annuitant mortality fluctuation reserve (Note 3D)...             --             --
Payable to Massachusetts Mutual
  Life Insurance Company............................      1,946,804        163,621
                                                       ------------   ------------
  Total liabilities.................................      2,012,049        166,839
                                                       ------------   ------------
NET ASSETS..........................................   $160,472,805   $ 52,693,861
                                                       ============   ============
Net assets:
Accumulation units - Value..........................   $160,472,805   $ 52,693,861
Annuity reserves (Note 3E)..........................             --             --
                                                       ------------   ------------
  Net assets........................................   $160,472,805   $ 52,693,861
                                                       ============   ============
Accumulation units (Note 7)
Contractowners......................................   $132,935,274     41,303,318
Massachusetts Mutual Life Insurance Company.........          5,000          5,000
                                                       ------------   ------------
Total units.........................................    132,940,274     41,308,318
                                                       ============   ============
NET ASSET VALUE PER ACCUMULATION UNIT
June 30, 1997.......................................          $1.21          $1.28
June 30, 1996.......................................           0.98           1.15
June 30, 1995.......................................           0.91           1.05
June 30, 1994.......................................             --             --
June 30, 1993.......................................             --             --
</TABLE>
                                                      
                                                      
                      See Notes to Financial Statements.

                                       3
<PAGE>
 
Massachusetts Mutual Variable Annuity Separate Account 1 - Flex Extra 
(Qualified)


STATEMENT OF OPERATIONS

For the Six Months Ended June 30, 1997
(Unaudited)
<TABLE>
<CAPTION>
                                                                                      MML             MML      
                                                                      MML            Money          Managed          MML
                                                                     Equity          Market          Bond           Blend
                                                                    Division        Division       Division        Division
                                                                  ------------    ------------   ------------    -----------
<S>                                                          <C>                <C>            <C>            <C>
Investment income
Dividends (Note 3B).........................................  $      15,218     $  1,872,220   $  1,671,708   $   13,078,867

Expenses
Mortality and expense risk fees and
  administrative expenses (Note 4)..........................      7,662,897          488,576        666,158        9,685,455
                                                              -------------     ------------   ------------   --------------
Net investment income (loss) (Note 3C)......................     (7,647,679)       1,383,644      1,005,550        3,393,412
                                                              -------------     ------------   ------------   --------------
Net realized and unrealized gain (loss) on investments
Net realized gain on investments
  (Notes 3B, 3C and 6)......................................      5,773,363               --         14,933        7,789,304
Change in net unrealized appreciation/
  depreciation of investments...............................    175,009,634               --      1,372,539      142,697,262
                                                              -------------     ------------   ------------   --------------
Net gain (loss) on investments..............................    180,782,997               --      1,387,472      150,486,566
                                                              -------------     ------------   ------------   --------------
Net increase in net assets
  resulting from operations.................................  $ 173,135,318     $  1,383,644   $  2,393,022   $  153,879,978
                                                              =============     ============   ============   ==============
<CAPTION>
                                                                Oppenheimer      Oppenheimer     Oppenheimer
                                                                 Capital           Global         Strategic                   
                                                               Appreciation      Securities         Bond                      
                                                                 Division         Division         Division
                                                               ------------      -----------     ------------
<S>                                                           <C>               <C>              <C>
Investment income
Dividends (Note 3B).........................................  $  10,620,416       $ 1,580,928      $ 1,914,043

Expenses
Mortality and expense risk fees and
  administrative expenses (Note 4)..........................      1,397,575           872,325         286,977
                                                              -------------       -----------      ----------
Net investment income (loss) (Note 3C)......................      9,222,841           708,603       1,627,066
                                                              -------------       -----------      ----------
Net realized and unrealized gain (loss) on investments
Net realized gain on investments
  (Notes 3B, 3C and 6)......................................      1,210,894           727,170          70,924
Change in net unrealized appreciation/
  depreciation of investments...............................      5,850,707        18,714,771         (85,183)
                                                              -------------       -----------      ----------
Net gain (loss) on investments..............................      7,061,601        19,441,941         (14,259)
                                                              -------------       -----------      ----------
Net increase in net assets
  resulting from operations.................................  $  16,284,442       $ 20,150,544     $ 1,612,807
                                                              =============       ============     ===========
</TABLE>

                       See Notes to Financial Statements

                                       4
<PAGE>
 
Massachusetts Mutual Variable Annuity Separate Account 1 - Flex Extra 
(Qualified)


STATEMENT OF CHANGES IN NET ASSETS

For the Six Months Ended June 30, 1997
(Unaudited)


<TABLE>
<CAPTION>

                                                                                    MML              MML          
                                                                    MML            Money           Managed              MML
                                                                   Equity          Market            Bond              Blend
                                                                  Division        Division         Division           Division
                                                                 -----------    ------------     --------------      ------------
<S>                                                           <C>                <C>              <C>              <C>
Increase (decrease) in net assets
Operations:
  Net investment income (loss)..............................  $   (7,647,679)    $  1,383,644     $  1,005,550     $    3,393,412
  Net realized gain on investments..........................       5,773,363               --           14,933          7,789,304
  Change in net unrealized
    appreciation/depreciation of investments................     175,009,634               --        1,372,539        142,697,262
                                                              --------------     ------------     ------------     --------------
  Net increase in net assets
    resulting from operations...............................     173,135,318        1,383,644        2,393,022        153,879,978
                                                              --------------     ------------     ------------     --------------
Capital transactions: (Note 7)
  Net contract payments (Note 5)............................     107,873,010       20,699,400        8,348,446        106,738,513
  Transfer to Guaranteed Principal Account..................      (2,877,347)      (1,301,846)        (516,973)        (2,199,434)
  Withdrawal of funds.......................................     (54,788,884)      (5,237,163)      (4,804,539)       (73,030,131)
  Reimbursement (payment) of accumulation unit value
    fluctuation.............................................         287,811          (16,836)          (9,816)           237,947
  Net charge (credit) to annuitant mortality
    fluctuation reserve (Note 3D)...........................         (22,742)              61            2,618           (318,044)
  Annuity benefit payments..................................         (15,654)            (552)          (1,860)           (68,980)
  Withdrawals due to administrative and contingent
    deferred sales charges (Note 5).........................      (1,649,317)         (94,355)        (399,901)        (2,365,739)
  Divisional transfers......................................      12,462,141      (18,848,875)      (5,520,596)       (10,258,605)
                                                              --------------     ------------     ------------     --------------
  Net increase (decrease) in net assets resulting from 
    capital transactions....................................      61,269,018       (4,800,166)      (2,902,621)        18,735,527
                                                              --------------     ------------     ------------     --------------
Total increase..............................................     234,404,336       (3,416,522)        (509,599)       172,615,505

NET ASSETS, at beginning of the year........................   1,089,202,902       78,032,972      104,667,778      1,433,165,306
                                                              --------------     ------------     ------------     --------------
NET ASSETS, at end of the period............................  $1,323,607,238     $ 74,616,450     $104,158,179     $1,605,780,811
                                                              ==============     ============     ============     ==============
<CAPTION>
                                                                 Oppenheimer       Oppenheimer       Oppenheimer
                                                                   Capital           Global           Strategic
                                                                 Appreciation       Securities          Bond
                                                                   Division          Division         Division
                                                                -----------        -----------      ------------
<S>                                                           <C>                <C>              <C>
Increase (decrease) in net assets
Operations:
  Net investment income (loss)..............................  $    9,222,841     $    708,603     $  1,627,066
  Net realized gain on investments..........................       1,210,894          727,170           70,924
  Change in net unrealized appreciation/depreciation
    of investments..........................................       5,850,707       18,714,771          (85,183)
                                                              --------------     ------------     ------------
Net increase in net assets
  resulting from operations.................................      16,284,442       20,150,544        1,612,807
                                                              --------------     ------------     ------------
Capital transactions: (Note 7)
  Net contract payments (Note 5)............................      45,700,722       25,022,327       12,787,871
  Transfer to Guaranteed Principal Account..................        (349,157)        (135,968)        (196,249)
  Withdrawal of funds.......................................      (7,289,992)      (4,881,511)      (1,196,284)
  Reimbursement (payment) of accumulation unit value
    fluctuation.............................................         (98,627)      (1,354,762)         (17,073)
  Net charge (credit) to annuitant mortality fluctuation 
    reserve (Note 3D).......................................         (22,166)              --               --
  Annuity benefit payments..................................          (1,484)          (1,024)          (1,117)
  Withdrawals due to administrative and contingent
    deferred sales charges (Note 5).........................        (220,143)        (101,976)         (22,940)
  Divisional transfers......................................      11,605,767        8,380,011        2,180,157
                                                              --------------     ------------     ------------
  Net increase (decrease) in net assets resulting from 
    capital transactions....................................      49,324,920       26,927,097       13,534,365
                                                              --------------     ------------     ------------
Total increase..............................................      65,609,362       47,077,641       15,147,172

NET ASSETS, at beginning of the year........................     196,843,732      113,395,164       37,546,689
                                                              --------------     ------------     ------------
NET ASSETS, at end of the period............................  $  262,453,094    $ 160,472,805     $ 52,693,861
                                                              ==============    =============     ============
</TABLE>

                      See Notes to Financial Statements.

                                       5
<PAGE>
 
Massachusetts Mutual Variable Annuity Separate Account 1 - 
Flex Extra (Qualified)

STATEMENT OF CHANGES IN NET ASSETS

For the Six Months Ended June 30, 1996
(Unaudited)

<TABLE>
<CAPTION>
                                                    MML          MML                       Oppenheimer    Oppenheimer    Oppenheimer
                                      MML          Money       Managed           MML         Capital         Global       Strategic
                                     Equity        Market        Bond           Blend      Appreciation    Securities       Bond
                                    Division      Division     Division        Division      Division       Division      Division
                                    --------      --------     --------        --------      --------       --------      --------
<S>                              <C>            <C>         <C>            <C>             <C>            <C>          <C>
Increase (decrease) in net assets
Operations:
 Net investment income (loss)... $ (5,608,228)  $ 1,114,407 $    943,395   $    3,879,007  $  4,473,626   $  (443,235) $   778,887
 Net realized gain (loss)
  on investments................    2,805,054            --       31,246        6,297,091       376,609       (20,094)      21,691
 Change in net unrealized
  appreciation/depreciation
  of investments................   67,194,910            --   (3,390,697)      50,523,384     9,654,407     5,270,283      (20,795)
                                 ------------   ----------- ------------   --------------  ------------   -----------  -----------
 Net increase (decrease) in
  net assets resulting from
  operations....................   64,391,736     1,114,407   (2,416,056)      60,699,482    14,504,642     4,806,954      779,783
                                 ------------   ----------- ------------   --------------  ------------   -----------  -----------

Capital transactions: (Note 7)
 Net contract payments (Note 5).  102,398,404    20,843,612   13,847,940      113,474,022    33,922,902    19,027,395    7,386,360
 Transfer to Guaranteed
  Principal Account.............   (1,300,972)   (1,008,906)    (391,768)      (1,931,389)      (80,826)     (246,990)    (113,973)
 Withdrawal of funds............  (35,212,575)   (6,755,907)  (4,132,986)     (59,637,139)   (3,154,694)   (2,372,773)    (625,079)
 Reimbursement (payment) of
  accumulation unit value
   fluctuation..................      267,023         1,428      (15,191)          82,436       302,800        27,107          933
 Net charge (credit) to
  annuitant mortality fluctuation 
  reserve (Note 3D).............          533            51          308           (2,716)         (172)           --           --
 Annuity benefit payments.......      (11,853)         (554)      (1,615)         (32,825)         (104)           --           --
 Withdrawals due to 
  administrative and contingent
  deferred sales charges
  (Note 5)......................   (1,345,193)     (144,258)    (363,425)      (2,145,996)      (82,764)      (61,308)     (17,325)
 Divisional transfers...........    9,795,361   (13,041,737)  (3,639,850)     (20,501,974)   19,889,223     7,031,409      467,568
                                 ------------   ----------- ------------   --------------  ------------   -----------  -----------
 Net increase (decrease) in
  net assets resulting from
  capital transactions..........   74,590,728      (106,271)   5,303,413       29,304,419    50,796,365    23,404,840    7,098,484
                                 ------------   ----------- ------------   --------------  ------------   -----------  -----------
Total Increase..................  138,982,464     1,008,136    2,887,357       90,003,901    65,301,007    28,211,794    7,878,267

NET ASSETS, at beginning of
 the year.......................  792,905,807    61,362,416   97,432,892    1,228,700,379    64,912,233    54,391,407   18,470,606
                                 ------------   ----------- ------------   --------------  ------------   -----------  -----------
NET ASSETS, at end of the
 period......................... $931,888,271   $62,370,552 $100,320,249   $1,318,704,280  $130,213,240   $82,603,201  $26,348,873
                                 ============   =========== ============   ==============  ============   ===========  ===========
</TABLE>

                      See Notes to Financial Statements.

                                       6
<PAGE>
 
Massachusetts Mutual Variable Annuity Separate Account 1 -- 
Flex Extra (Qualified)

Notes To Financial Statements
(Unaudited)

1.   HISTORY

     Massachusetts Mutual Variable Annuity Separate Account 1 ("Separate Account
     1") is a separate investment account established on April 8, 1981 by
     Massachusetts Mutual Life Insurance Company ("MassMutual"). Separate
     Account 1 operates as a registered unit investment trust pursuant to the
     Investment Company Act of 1940 and the rules promulgated thereunder.

     MassMutual maintains three segments within Separate Account 1. The segments
     are Variable Annuity Fund 4, Flex-Annuity IV (Qualified) and Flex Extra
     (Qualified.) These notes and the financial statements presented herein,
     with the exception of Note 8, describe and consist only of the Flex Extra
     (Qualified) segment (the "Segment").

     On September 13, 1994, MassMutual paid $15,000 to provide the initial
     capital for the Segment's three new divisions: 1,516 shares were purchased
     in the management investment company described in Note 2 supporting the
     three new Oppenheimer divisions of the Segment.

2.   INVESTMENT OF THE SEGMENT'S ASSETS

     The Flex Extra (Qualified) Segment maintains seven divisions. The MML
     Equity Division invests in shares of MML Equity Fund, the MML Money Market
     Division invests in shares of MML Money Market Fund, the MML Managed Bond
     Division invests in shares of MML Managed Bond Fund, the MML Blend Division
     invests in shares of MML Blend Fund, the Oppenheimer Capital Appreciation
     Division invests in shares of Oppenheimer Capital Appreciation Fund, the
     Oppenheimer Global Securities Division invests in shares of Oppenheimer
     Global Securities Fund and the Oppenheimer Strategic Bond Division invests
     in shares of Oppenheimer Strategic Bond Fund.

     MML Equity Fund, MML Money Market Fund, MML Managed Bond Fund and MML Blend
     Fund are four series of shares of MML Series Investment Fund (the "MML
     Trust"). The MML Trust is a no-load, registered, open-end, management
     investment company for which MassMutual serves as investment manager.
     Concert Capital Management, Inc. ("Concert") served as the investment sub-
     adviser to MML Equity Fund and the Equity Sector of the MML Blend Fund from
     1993-1996. Concert merged with and into David L. Babson & Company, Inc.
     ("Babson") effective December 31, 1996. At such time, both Concert and
     Babson were wholly-owned subsidiaries of Babson Acquisition Corporation,
     which is a controlled subsidiary of MassMutual. Thus, effective January 1,
     1997, Babson serves as the investment sub-adviser to MML Equity Fund and
     the Equity Sector of the MML Blend Fund. MassMutual pays Babson a quarterly
     fee equal to an annual rate of .13% of the average daily net asset value of
     MML Equity Fund and the Equity Sector of MML Blend Fund.

     Oppenheimer Capital Appreciation Fund, Oppenheimer Global Securities Fund
     and Oppenheimer Strategic Bond Fund (the "Oppenheimer Funds") are part of
     the Oppenheimer Variable Account Funds (the "Oppenheimer Trust"). The
     Oppenheimer Trust is a registered, open-end, diversified management
     investment company, for which OppenheimerFunds, Inc. ("OFI"), a controlled
     subsidiary of MassMutual, serves as investment adviser.

     In addition to the seven divisions of the Segment, a contractowner may also
     allocate funds to the Guaranteed Principal Account, which is part of
     MassMutual's general account. Because of exemptive and exclusionary
     provisions, interests in the Guaranteed Principal Account, which is part of
     MassMutual's general account, are not registered under the Securities Act
     of 1933; and the general account is not registered as an investment company
     under the Investment Company Act of 1940.

3.   SIGNIFICANT ACCOUNTING POLICIES

     The following is a summary of significant accounting policies followed
     consistently by the Segment in preparation of the financial statements in
     conformity with generally accepted accounting principles.

     A.  Investment Valuation

     The investments in MML Trust and Oppenheimer Trust are each stated at
     market value which is the net asset value of each of the respective
     underlying funds.

     B.  Accounting for Investments

     Investment transactions are accounted for on trade date and identified cost
     is the basis followed in determining the cost of investments sold for
     financial statement purposes. Dividend income is recorded on the ex-
     dividend date.

                                       7
<PAGE>
 
Notes To Financial Statements (Continued)

     C.  Federal Income Taxes

     Operations of the Segment form a part of the total operations of
     MassMutual, and the Segment is not taxed separately. MassMutual is taxed as
     a life insurance company under the provisions of the 1986 Internal Revenue
     Code, as amended. The Segment will not be taxed as a "regulated investment
     company" under Subchapter M of the Internal Revenue Code. Under existing
     federal law, no taxes are payable on investment income and realized capital
     gains attributable to contracts which depend on the Segment's investment
     performance (the "Contracts").  Accordingly, no provision for federal
     income tax has been made. MassMutual may, however, make such a charge in
     the future if an unanticipated change of current law results in a company
     tax liability attributable to the Segment.

     D.  Annuitant Mortality Fluctuation Reserve

     The Segment maintains a reserve as required by regulatory authorities to
     provide for mortality losses incurred. The reserve is increased quarterly
     for mortality gains and its proportionate share of any increases in value.
     The reserve is charged quarterly for mortality losses and its proportionate
     share of any decreases in value. Transfers to or from MassMutual are then
     made quarterly to adjust the Segment. Net transfers from the Segment to
     MassMutual totaled $336,784 for the six months ended June 30, 1997 and net
     transfers from MassMutual to the Segment totaled $1,311 for the six months
     ended June 30, 1996. The reserve is subject to a maximum of 3% of the
     Segment's annuity reserves. Any mortality losses in excess of this reserve
     will be assumed by MassMutual. The reserve is not available to owners of
     Contracts except to the extent necessary to cover mortality losses under
     the Contracts.

     E.  Annuity Reserves

     Annuity reserves are developed by using accepted actuarial methods and are
     computed using the 1971 Individual Annuity Mortality Table, as modified.

     F.  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 revenues and expenses
     during the reporting period. Actual results could differ from those
     estimates.

4.   CHARGES FOR MORTALITY AND EXPENSE RISKS AND ADMINISTRATIVE EXPENSES

     Daily charges are made which are currently equivalent on an annual basis to
     1.30% of the net asset value of the Segment (the "Net Asset Value"). The
     mortality and expense risk part of this charge is made daily at an annual
     rate which is currently equal to 1.15%, and will not exceed 1.25% of the
     Net Asset Value. The administrative expense part of this charge is made
     daily at an annual rate of 0.15% of the Net Asset Value.

5.   CHARGES/DEDUCTIONS FOR ADMINISTRATIVE CHARGES, CONTINGENT DEFERRED SALES
     CHARGES AND PREMIUM TAXES

<TABLE>
<CAPTION>
                                                         MML          MML                     Oppenheimer  Oppenheimer   Oppenheimer
                                            MML         Money       Managed         MML         Capital       Global      Strategic
For the Six Months                         Equity       Market        Bond         Blend      Appreciation  Securities      Bond
Ended June 30, 1997                       Division     Division     Division      Division      Division     Division     Division
- -------------------                       --------     --------     --------      --------      --------     --------     --------  
<S>                                     <C>           <C>          <C>          <C>           <C>           <C>          <C>        
Gross contract payments...............  $107,912,932  $20,707,060  $ 8,351,535  $106,778,014   $45,717,635  $25,031,587  $12,792,603

Less deduction for premium taxes......        39,922        7,660        3,089        39,501        16,913        9,260        4,732
                                        ------------  -----------  -----------  ------------   -----------  -----------  -----------
Net contract payments.................  $107,873,010  $20,699,400  $ 8,348,446  $106,738,513   $45,700,722  $25,022,327  $12,787,871
                                        ============  ===========  ===========  ============   ===========  ===========  ===========
Administrative and contingent
 deferred sales charges...............  $  1,649,317  $    94,355  $   399,901  $  2,365,739   $   220,143  $   101,976  $    22,940
                                        ============  ===========  ===========  ============   ===========  ===========  ===========

</TABLE> 

                                       8
<PAGE>
 
Notes To Financial Statements
(Continued)

<TABLE>
<CAPTION>
                                                         MML          MML                     Oppenheimer  Oppenheimer   Oppenheimer
                                            MML         Money       Managed         MML         Capital       Global      Strategic
For the Six Months                         Equity       Market        Bond         Blend      Appreciation  Securities      Bond
Ended June 30, 1996                       Division     Division     Division      Division      Division     Division     Division
- -------------------                       --------     --------     --------      --------      --------     --------     --------  
<S>                                     <C>           <C>          <C>          <C>           <C>           <C>          <C>        
Gross contract payments...............  $102,429,273  $20,849,896  $13,852,115  $113,508,230   $33,933,128  $19,033,131  $ 7,388,587

Less deduction for premium taxes......        30,869        6,284        4,175        34,208        10,226        5,736        2,227
                                        ------------  -----------  -----------  ------------   -----------  -----------  -----------
Net contract payments.................  $102,398,404  $20,843,612  $13,847,940  $113,474,022   $33,922,902  $19,027,395  $ 7,386,360
                                        ============  ===========  ===========  ============   ===========  ===========  ===========
Administrative and contingent
 deferred sales charges...............  $  1,345,193  $   144,258  $   363,425  $  2,145,996   $    82,764  $    61,308  $    17,325
                                        ============  ===========  ===========  ============   ===========  ===========  ===========
</TABLE>

6. PURCHASES AND SALES OF INVESTMENTS

<TABLE>
<CAPTION>
For the Six Months                                                                                            Cost of     Proceeds
Ended June 30, 1997                                                                                          Purchases   from Sales
- -------------------                                                                                          ---------   ----------
<S>                                                                                                        <C>           <C>
MML Equity Fund..........................................................................................  $119,191,737  $11,735,347
MML Money Market Fund....................................................................................    22,493,964   26,064,483
MML Managed Bond Fund....................................................................................     6,628,309    6,617,808
MML Blend Fund...........................................................................................    97,066,686   19,874,991
Oppenheimer Capital Appreciation Fund....................................................................    64,355,649    4,949,073
Oppenheimer Global Securities Fund.......................................................................    35,915,003    6,358,413
Oppenheimer Strategic Bond Fund..........................................................................    16,632,155    1,340,133
</TABLE> 

7. NET INCREASE (DECREASE) IN ACCUMULATION UNITS

<TABLE>
<CAPTION>
                                                         MML          MML                     Oppenheimer  Oppenheimer   Oppenheimer
                                            MML         Money       Managed         MML         Capital       Global      Strategic
For the Six Months                         Equity       Market        Bond         Blend      Appreciation  Securities      Bond
Ended June 30, 1997                       Division     Division     Division      Division      Division     Division     Division
- -------------------                       --------     --------     --------      --------      --------     --------     --------
<S>                                    <C>           <C>          <C>          <C>           <C>           <C>          <C>         
Units purchased.......................   35,150,102   13,636,359    4,175,704    40,680,148    30,525,480   22,370,628   10,300,007
Units withdrawn and transferred
 to Guaranteed Principal
 Account..............................  (19,204,245)  (4,476,319)  (2,861,315)  (29,395,578)   (5,258,493)  (4,567,033)  (1,137,785)
Units transferred
 between divisions....................    4,018,558  (12,291,608)  (2,762,369)   (3,934,793)    7,551,084    7,450,383    1,757,552
Units transferred
 to annuity reserves..................       (8,684)          --       (2,569)     (353,046)      (16,873)     (16,307)     (16,538)
                                       ------------  -----------  -----------  ------------   -----------  -----------  -----------
Net increase (decrease)...............   19,955,731   (3,131,568)  (1,450,549)    6,996,731    32,801,198   25,237,671   10,903,236

Units, at beginning of the year.......  374,083,546   51,271,090   52,403,544   566,300,198   125,989,293  107,702,603   30,405,082
                                       ------------  -----------  -----------  ------------   -----------  -----------  ----------- 
Units, at end of the period...........  394,039,277   48,139,522   50,952,995   573,296,929   158,790,491  132,940,274   41,308,318
                                       ============  ===========  ===========  ============   ===========  ===========  =========== 
</TABLE>

 
<TABLE>
<CAPTION>
                                                         MML          MML                     Oppenheimer  Oppenheimer   Oppenheimer
                                            MML         Money       Managed         MML         Capital       Global      Strategic
For the Six Months                         Equity       Market        Bond         Blend      Appreciation  Securities      Bond
Ended June 30, 1996                       Division     Division     Division      Division      Division     Division     Division
- -------------------                       --------     --------     --------      --------      --------     --------     --------
<S>                                    <C>           <C>          <C>          <C>           <C>           <C>          <C>
Units purchased.......................   39,834,542   14,322,211    7,226,876    49,156,019    23,335,014   20,076,554    6,521,332
Units withdrawn and transferred
 to Guaranteed Principal
 Account..............................  (14,707,139)  (5,589,966)  (2,562,438)  (27,558,846)   (2,259,069)  (2,822,477)    (667,025)
Units transferred
 between divisions....................    3,821,732   (8,801,369)  (1,923,691)   (8,834,743)   13,294,370    7,427,147      412,258
Units transferred
 to annuity reserves..................       (4,196)          --       (1,265)      (41,395)       (1,900)          --           --
                                       ------------  -----------  -----------  ------------   -----------  -----------  -----------
Net increase (decrease)...............   28,944,939      (69,124)   2,739,482    12,721,035    34,368,415   24,681,224    6,266,565

Units, at beginning of the year.......  323,311,630   41,803,873   49,720,989   546,216,626    49,289,518   59,951,410   16,550,444
                                       ------------  -----------  -----------  ------------   -----------  -----------  -----------
Units, at end of the period...........  352,256,569   41,734,749   52,460,471   558,937,661    83,657,933   84,632,634   22,817,009
                                       ============  ===========  ===========  ============   ===========  ===========  ===========
</TABLE>

                                       9
<PAGE>
 
Notes To Financial Statements (Continued)

8.   CONSOLIDATED MASSACHUSETTS MUTUAL VARIABLE ANNUITY SEPARATE ACCOUNT 1

     As discussed in Note 1, the financial statements only represent activity of
     the Flex Extra (Qualified) segment of the Massachusetts Mutual Variable
     Annuity Separate Account 1. The combined net assets as of June 30, 1997 for
     the Massachusetts Mutual Variable Annuity Separate Account 1, which
     includes the segments pertaining to the Variable Annuity Fund 4, Flex-
     Annuity IV (Qualified) and Flex Extra (Qualified) are as follows:

<TABLE>
<CAPTION>
                                                        MML          MML                      *Oppenheimer *Oppenheimer *Oppenheimer
                                           MML         Money       Managed          MML         Capital       Global      Strategic
For the Six Months                        Equity       Market        Bond          Blend      Appreciation  Securities      Bond
Ended June 30, 1997                      Division     Division     Division       Division      Division     Division     Division
- -------------------                      --------     --------     --------       --------      --------     --------     --------
<S>                                   <C>           <C>          <C>           <C>           <C>           <C>          <C>
Total assets....................... $1,468,746,665  $87,222,516 $118,502,889 $1,863,607,494  $263,498,673 $162,484,854  $52,860,700
Total liabilities..................      6,438,258      542,440      476,436      8,742,453     1,045,579    2,012,049      166,839
                                    --------------  ----------- ------------ --------------  ------------ ------------  -----------
Net assets......................... $1,462,308,407  $86,680,076 $118,026,453 $1,854,865,041  $262,453,094 $160,472,805  $52,693,861
                                    ==============  =========== ============ ==============  ============ ============  ===========

Net assets consist of:
Accumulation units - Value......... $1,461,676,380  $86,585,577 $117,872,446 $1,853,093,105  $262,448,673 $160,472,805  $52,693,861
Annuity reserves...................        632,027       94,499      154,007      1,771,936         4,421           --           --
                                    --------------  ----------- ------------ --------------  ------------ ------------  -----------
Net assets......................... $1,462,308,407  $86,680,076 $118,026,453 $1,854,865,041  $262,453,094 $160,472,805  $52,693,861
                                    ==============  =========== ============ ==============  ============ ============  ===========
</TABLE> 

*Offered on the Flex Extra (Qualified) Contracts only.


9.   DISTRIBUTION AGREEMENT

     Effective May 1, 1996, MML Distributors, LLC ("MML Distributors"), a
     wholly-owned subsidiary of MassMutual, serves as principal underwriter of
     the contracts pursuant to an underwriting and servicing agreement among MML
     Distributors, MassMutual and Separate Account I. MML Distributors is
     registered with the Securities and Exchange Commission (the "SEC") as a
     broker-dealer under the Securities Exchange Act of 1934 and is a member of
     the National Association of Securities Dealers, Inc. (the "NASD"). MML
     Distributors may enter into selling agreements with other broker-dealers
     who are registered with the SEC and are members of the NASD in order to
     sell the contracts.

     Prior to May 1, 1996, MML Investors Services, Inc. ("MMLISI") a wholly-
     owned subsidiary of MassMutual, served as principal underwriter of the
     contracts. Effective May 1, 1996, MMLISI serves as co-underwriter of the
     policies pursuant to underwriting and servicing agreements among MMLISI,
     MassMutual and Separate Account 1, MMLISI is registered with the SEC as a
     broker-dealer under the Securities Exchange Act of 1934 and is a member of
     the NASD. Registered representatives of MMLISI sell the contracts as
     authorized variable life insurance agents under applicable state insurance
     laws.

     Under the sales agreement among MMLISI, MassMutual and Separate Account 1,
     agents receive commissions and service fees from MMLISI for selling and
     servicing the contracts. MassMutual reimburses MMLISI for such compensation
     and for other expenses incurred in marketing and selling the contracts.

                                       10
<PAGE>
 
                          MML Series Investment Fund

                               Table of Contents
<TABLE> 
<CAPTION> 

                                                                           Page
                                                                           ----
<S>                                                                       <C> 
To Our Shareholders......................................................   2-5

Statement of Assets and Liabilities as of June 30, 1997..................     6

     MML Equity Fund
     MML Money Market Fund
     MML Managed Bond Fund
     MML Blend Fund

Statement of Operations For the Six Months Ended June 30, 1997...........     7

     MML Equity Fund
     MML Money Market Fund
     MML Managed Bond Fund
     MML Blend Fund

Statement of Changes in Net Assets For the Six Months Ended June 30, 1997
  and For the Year Ended December 31, 1996...............................     8

     MML Equity Fund
     MML Money Market Fund
     MML Managed Bond Fund
     MML Blend Fund

Financial Highlights

     MML Equity Fund.....................................................     9
     MML Money Market Fund...............................................     9
     MML Managed Bond Fund...............................................    10
     MML Blend Fund......................................................    11

Schedule of Investments as of June 30, 1997

     MML Equity Fund..................................................... 12-13
     MML Money Market Fund...............................................    14
     MML Managed Bond Fund............................................... 15-17
     MML Blend Fund...................................................... 18-23

Notes to Financial Statements............................................ 24-26

</TABLE> 

                                       1
<PAGE>
 
MML Series Investment Fund

To Our Shareholders

Economic Strength Continues

Over seven and a half years into the current expansion and the factors that have
been critical in shaping economic behavior - a broad-based expansion free of
major excesses, low inflation, a Federal budget deficit that has been falling,
now down to $50-$60 billion, and a Federal Reserve that is sensitive to
potential price pressures but not given to aggressiveness are still in place.

In the first half of 1997, consumption drove economic gains, with solid support
from private investment.  Employment continued to grow, as did personal income,
and consumer confidence reached a long-time high.  These factors allowed
businesses to build up inventories in the first quarter to meet consumer demand,
which in turn supported the consumer behavior.

With Little Concern About Inflation

Even with unemployment as low as it has been, there are few signs that inflation
is a concern.  During the first half of the year, even while Chairman Greenspan
built a case for raising rates during several appearances before congressional
committees, the Federal Reserve made only one interest rate move - a quarter-
point tightening on March 25, 1997.

Domestic Stocks Surge

With a steady economy, lean, competitive and profitable corporations and
favorable monetary policy, the stock market soared to new heights.  Both the Dow
Jones Industrial Average and the Standard & Poor's 500 set and then surpassed
records during the past six months.  When you consider that the U.S. market has
effectively doubled over the past two and a half years, nightly reports of the
markets new records are almost old news.

Even while the major market indices have made news, it's only been recently that
the bullishness has broadened.  Particularly during the first quarter, it was
predominately the very largest growth companies that were leading the market.
The `Nifty Fifty' largest U.S. companies' stocks pushed both index performance
and their own prices to new highs.  In the second quarter, however, we began to
see investors once again include smaller company stocks and some previously out-
of-favor companies in their focus.

During the first half of this year, international stock markets have also done
well.  Major markets in continental Europe, with the exception of the United
Kingdom, have been quite strong, benefiting from corporate belt-tightening and
favorable exchange rates.  Japan has rebounded nicely, and Latin American
markets have performed well on rapid growth and political stability.
International index performance has lagged that reported by the domestic market
primarily because of difficulties in emerging Southeast Asian markets over the
period.

A Positive Environment for Bonds

The past six months have been positive for the debt markets as well, though
response to economic news has not been nearly as dramatic as stock market
reaction.  The first quarter was somewhat difficult for most areas of the bond
market, due to uncertainty about interest rates and then the Federal Reserve's
March tightening.  But in the second quarter, after expectations of further
tightening were not realized, rates began to drop and bonds recouped their
losses.

Some areas of the bond market have been very positive, particularly corporate
bonds, with performance that is tied to many of the factors supporting stocks.
Triple B-rated issues have also done well.  Triple B bonds tend to have higher
yields than higher-rated bonds, and since income has been the major component of
bond total returns so far this year, they've been very strong.

Balancing Risk and Reward in a High Priced Market

At this time, there is nothing in the forecast to shake our view that economic
growth can continue throughout 1997.  However, particularly in the case of
large-cap domestic stocks, there is risk associated with any market that's
enjoyed the terrific run ours has over the past several years.  MassMutual's
investment philosophy is grounded in the belief that protecting capital against
downturns is just as important over the long term as is participating in the
advances of bull markets.

We look for value when we evaluate both stocks and bonds, seeking to avoid the
risk that follows buying a security that has reached or is nearing a peak high.
As a result, while we take advantage of the opportunities a fast-paced market
provides, we tend to be more cautious than some of our more growth-oriented
peers.  Over the market's history, the benefits of this approach have been borne
out, and we expect that to continue in the future.


                                            /s/ Stuart H. Reese

                                            Stuart H. Reese
                                            President
                                            MML Series Investment Fund
July 31, 1997

                                       2
<PAGE>
 
MML EQUITY

How has the Fund performed over the past six months? 

Even though the Fund has a relatively conservative approach to the stock market,
the Fund participated considerably in the market's strong upswing.  The
portfolio's total return for the six months ended June 30, 1997 is slightly
lower than that of the S&P 500, which we'd expect during a strong bull market.
Still, we've outperformed many of our value-oriented peers, and in six months
have already surpassed the historical average one-year return on stock
investments.

How would you characterize the equity market over the period? 

This has been a market in which the largest stocks have performed best.  The
fact that the largest companies in the major indices such as the S&P and the Dow
Jones Industrial Average have appreciated dramatically has skewed the indices'
returns, giving the impression that all stocks are doing remarkably well.  This
market has basically doubled in the past two and a half years, and the economy
has been growing far longer than historical cyclical patterns.  As a result,
investors have been willing to pay high prices to own the largest companies.
They're attracted by these firms' reliable, growing earnings and hope to be
protected from any weakness in future earnings should the economy change.

What investment decisions were most successful during the period? 

As always, we've emphasized high quality companies selling at reasonable prices
compared to their earnings.  In the past six months, we've been very pleased
that our two largest positions have been among our top performers.  We've done
extremely well with our holdings in Bristol-Myers and GE - two strong companies
with excellent earnings that have been beneficiaries of the current market
psychology.

Even though the market has done very well over the first half of 1997, there was
a temporary dip after the Federal Reserve's interest rate increase at the end of
March.  We used this as an opportunity to buy new stocks when they were selling
far from their recent highs.  One example, Burlington Northern, a Fort Worth-
based railroad system, purchased the Santa Fe system and received favorable
investor response.  However, expected cost reductions came more slowly than
expected, and weather problems hurt normally stable revenues.  We saw Burlington
Northern as a major player in coal and grain haulage, and expected the stock was
poised for a rebound.  We bought it and it has worked out very well for us so
far this year.

Are you making any changes to the portfolio at this time? 

The portfolio is already well diversified, and we feel it is structured
appropriately to prosper in the future.  On the margin, we have reduced our
health care holdings, since their performance has been so strong.

Two areas that were relatively weak so far in 1997 are telecommunications and
electric utility stocks.  We're currently making a gradual increase to our
electric utility holdings.  We believe selected electric stocks - those with low
operating costs, strong competitive positions and the ability to increase
dividend payments - offer good total return potential with relatively low risk.

What is your outlook for the next several months? 

Because the economy continues to be strong, with none of the classic signs of a
slowdown on the horizon, our outlook is encouraging.  Added to that is the fact
that corporate managements are making better business decisions now in terms of
focussing on their competitive advantages and placing great emphasis on
shareholder value.

Within this positive outlook, however, there is a risk that the Federal Reserve
will make another upward adjustment to interest rates.  This market, while
incredibly strong over the past several years, is very sensitive to interest
rates, as we saw in March.  That's why we believe a strategy like ours, with a
value focus that can limit price risk, is an intelligent way to approach the
stock market in any environment.

MML MONEY MARKET FUND

How did the Fund perform over the past six months? 

The Fund continues to perform well, reporting returns that are superior to
Lipper Analytical's average for money market funds.

What have been the most significant events in your market over the past six
months and how was the portfolio positioned for them? 

Short-term interest rates are impacted by the changes in the nation's monetary
policy.  The Federal Reserve raised interest rates only once during the first
six months of the year.  A twenty-five basis point increase in the Federal Funds
rate occurred in March.  This rise in rates was prompted by the length of the
economic expansion and the record highs reached by the stock market.

                                       3
<PAGE>
 
The shorter the average life a portfolio has the faster its instruments can be
replaced with higher yielding investments.  Prior to the Federal Reserve's
policy meeting in March, the MML Money Market's average life was shorter than a
universe of our peers.  This factor gave the Fund an advantage in quickly
replacing maturing issues with higher yielding issues.

The second major impact on our market during the first half of 1997 was a
default on $500 million of Tier one commercial paper issued by Mercury Finance.
Because it was highly rated, all money market funds were permitted to own the
issue, and many did.  We never rely solely on rating services' evaluations of
securities when making purchases.  We conduct proprietary research into all of
the securities we buy, and monitor them for any changes on a daily basis.  Our
own analysis of Mercury kept us from investing in the commercial paper offering,
and that protected us when Mercury defaulted.

Are you making any changes to the portfolio at this time? 

Not really.  We're planning to keep the average life of our portfolio closely in
line with that of our benchmark.

What is your outlook for the coming months at this time? 

The economy remains strong, with little evidence to suggest inflation is on the
rise.  As a result, we believe the Federal Reserve is keeping any movement in
rates on hold for the time being.  We've very recently seen rates on short-term
securities drop slightly as the market has begun to share this belief.  Until
news on the economic forecast changes significantly, we will continue with our
current strategy - working to capture the highest yields available without
increasing exposure to risk.

MML MANAGED BOND FUND

How did the Fund perform over the past six months? 

The Fund has turned in a very solid performance for the first half of 1997,
outpacing its benchmark, the Lehman Government/Corporate index and many of its
peers.  We're also pleased to have seen a substantial increase in assets under
management during the first six months of the year.

What was the most significant event in your market during that time? 

Although the market experienced a mild correction as a result of the Federal
Reserve's March interest rate increase, interest rates have remained within a
very tight band.  In this environment, where overall price volatility has
decreased, we've done well by investing in securities that can provide a yield
advantage over Treasuries.

What investment decisions were most successful over the period? 

We were very well positioned for the first half of the year, and outperformed
our index and our peers for several reasons.  Again, our primary advantage came
from owning securities that offered a generous yield spread over Treasuries.  In
a tight trading range market, you can not expect much of a portfolio's total
return to come from price appreciation.  That makes any extra income you can
garner a real benefit.

During the first half of 1997, mortgage-backed securities, approximately 22.8
percent of the portfolio, performed very well for us for just that reason.
Mortgage-backed securities have higher yields and also tend to outperform other
fixed income products when interest rates are relatively unchanging.  This
characteristic made them an excellent asset class to own during the full period.

Another asset class with spread advantages over Treasuries was corporate bonds.
By June 30, our allocation to corporate bonds was increased from 54.8 percent of
the portfolio at the beginning of the year to 59.3 percent.  Due to the strength
of both the economy and the stock market as well as the financial health of
corporate America, we felt confident enough to move some of our assets into the
lower quality areas of the investment grade corporate bond market.  Our
increased exposure to corporate bonds in general coupled with a thoroughly-
researched move toward higher-yielding bonds provided a significant boost to
performance.

Are you making any changes to the portfolio at this time? 

We're very comfortable with our sector allocations as they are now, and do not
plan on making any significant changes in the near future.  We believe the
portfolio's existing positioning, with a focus on the areas of the market that
offer advantageous yields, will continue to benefit us as the year proceeds.  In
addition to a consistent sector allocation, we plan to keep our duration - which
represents the portfolio's sensitivity to changes in interest rates - close to
that of the Lehman Brother's Government/Corporate Bond Index.

What is your outlook for the coming months? 

In our opinion, the normal trade-off between strong economic growth or low
inflation is not happening.  Though the domestic economy is in the seventh year
of its current expansion, there are many reasons to believe its strength will
continue.  Inflation is at a 34-year low, consumer confidence has reached a 28-
year high, the budget deficit is at a 16-year low, and in the three meetings of
the Federal Reserve's Open Market Committee during the first half of the year,
rates were only increased once.  

                                       4
<PAGE>
 
We believe these factors suggest a continued favorable environment for a Fund
like ours where we are focusing on the generation of return from income.

MML BLEND FUND

How did the Fund perform over the past six months? 

The Fund has done very well, both in absolute terms and relative to the average
for balanced funds.  Our combination of the benefits of strong stock selection
during a very bullish market and a timely bond strategy allowed us to come close
to matching in six months our performance for the entire year of 1996.

What types of stocks worked well for you during the period? 

This has been a market in which the largest stocks have performed best. Since
the market has basically doubled in the past two and a half years, and the
economy has been growing far longer than expected, investors have been willing
to pay high prices to own the largest companies.  They're attracted by these
firms' reliable, growing earnings and hope to be protected from any weakness in
future earnings should the economy change.

We take a relatively conservative approach to the market, emphasizing high
quality companies selling at relatively low prices compared to their earnings.
This generally keeps us from chasing the large growth companies that have pushed
the major indices to new highs so far this year. Even so, two such companies
were both our two largest positions and our top two performers during the
period.  We've done extremely well with our holdings in Bristol-Myers and GE -
each a high growth company with excellent earnings and a beneficiary of the
current market psychology.

We also added some strong stocks during the temporary decline that followed the
Federal Reserve's interest rate increase at the end of March.  One such stock,
Burlington Northern, a Fort Worth-based railroad system, purchased the Santa Fe
system and received favorable investor response.  However, expected cost
reductions came more slowly than expected, and weather problems hurt normally
stable revenues.  We saw Burlington Northern as a major player in coal and grain
haulage, and expected the stock was poised for a rebound.  We bought it and it
has worked out very well for us so far this year.

How was your bond portfolio positioned? 

Our bond portfolio was very well-positioned for the trading range market that
defined the first half of the year.  Our strategy over the period was to look
for securities that offered a generous yield spread over Treasuries.  Mortgage-
backed securities, approximately 19 percent of the bond portfolio, performed
very well for us.  They offer higher yields than Treasuries and tend to
outperform other fixed income products when interest rates are increasing.  This
characteristic made them an excellent asset class to own during the full period,
and especially after the Federal Reserve's tightening at the end of the first
quarter.

Are you making any changes to either your portfolio holdings or allocations at
this time? 

Nothing significant other than keeping vigilant for any new opportunities in
both stocks and bonds.  In terms of our asset allocation, while we review it
weekly, we see nothing on the horizon to suggest the need to alter it at this
time.  Our current allocation, 61 percent stocks, 19.6 percent bonds and 19.4
percent cash and short-term securities is slightly more aggressive than what
we'd originally set as a target.  This is because we've allowed our stock
position to grow on the strength of the market.  A higher allocation to stocks
has helped performance so far this year, and we're still quite comfortable with
it.

What is your outlook for the next several months? 

Because the economy continues to be strong, with none of the classic signs of
either a slowdown or an increase in inflation on the horizon, our outlook
remains very favorable for both the stock and bond markets. In this environment,
and especially with stocks at their current record highs, we believe a
relatively conservative balanced fund like this one makes sense as a way to both
capture gains and limit risk.

                                       5
<PAGE>
 
MML Series Investment Fund

STATEMENT OF ASSETS AND LIABILITIES

June 30, 1997
(Unaudited)
<TABLE> 
<CAPTION> 
                                                                                       MML             MML
                                                                      MML             Money           Managed          MML
                                                                     Equity           Market           Bond           Blend
                                                                      Fund             Fund            Fund            Fund 
                                                                    --------         --------        --------        --------   
<S>                                                              <C>              <C>              <C>            <C> 
ASSETS
Investments at value (See Schedule of Investments)
  (Notes 2A, 2B and 5)
 Equities (Identified cost: $1,251,426,499;
  $809,526,978 respectively).................................    $2,045,219,025   $           --   $         --   $1,485,309,027
 Bonds and notes (Identified cost: $183,956,089;
  $468,859,129 respectively).................................                --               --    185,372,867      473,397,860
 Short-term investments (Identified cost: $159,680,514; 
  $144,699,930; $417,929; $483,786,841 respectively).........       159,642,248      144,699,930        417,929      483,766,181
                                                                 --------------   --------------   ------------   --------------
  Total investments..........................................     2,204,861,273      144,699,930    185,790,796    2,442,473,068
Cash.........................................................                --           13,940         74,233               --
Interest and dividends receivable............................         3,843,636               --      2,554,269        9,868,750
Receivable for investments sold..............................         9,672,040               --      2,008,394        9,965,125
Prepaid trustees' fees.......................................             2,724            1,667          1,667            1,667
                                                                 --------------   --------------   ------------   --------------
  Total assets...............................................     2,218,379,673      144,715,537    190,429,359    2,462,308,610
                                                                 --------------   --------------   ------------   --------------
LIABILITIES
Payable for investments purchased............................        20,505,674               --      1,074,537       17,208,523
Payable for settlement of investments
 purchased on a forward commitment basis (Note 2D)...........                --               --             --           12,756
Dividends payable (Note 2C)..................................                --          606,813             --               --
Investment management fee payable (Note 4)...................         1,879,879          178,507        222,999        2,133,047
Accrued liabilities..........................................         2,527,146            4,631         15,378        1,032,409
                                                                 --------------   --------------   ------------   --------------
  Total liabilities..........................................        24,912,699          789,951      1,312,914       20,386,735
                                                                 --------------   --------------   ------------   --------------
NET ASSETS...................................................    $2,193,466,974   $  143,925,586   $189,116,445   $2,441,921,875
                                                                 ==============   ==============   ============   ==============
Net assets consist of:
Series shares (par value $.01 per share; an unlimited number
 authorized) (Note 6)........................................    $      634,251   $    1,439,256   $    154,933   $    1,007,130
Additional paid-in capital...................................     1,320,577,874      142,486,330    185,800,154    1,681,945,434
Undistributed net investment income (Note 2C)................        21,906,303              802      3,059,925       20,994,420
Undistributed net realized gain (loss) on investments and
 forward commitments (Notes 2D and 3)........................        56,594,286             (802)    (1,315,345)      57,687,527
Net unrealized appreciation (depreciation) on:
 Investments (Note 2A).......................................       793,754,260               --      1,416,778      680,300,120
 Forward commitments (Note 2D)...............................                --               --             --          (12,756)
                                                                 --------------   --------------   ------------   -------------- 
NET ASSETS...................................................    $2,193,466,974   $  143,925,586   $189,116,445   $2,441,921,875
                                                                 ==============   ==============   ============   ==============
Outstanding series shares....................................        63,425,085      143,925,586     15,493,320      100,713,016
                                                                 ==============   ==============   ============   ==============
Net asset value per share....................................    $        34.58   $         1.00   $      12.21   $        24.25
                                                                 ==============   ==============   ============   ============== 
</TABLE> 

                      See Notes to Financial Statements.

                                       6
<PAGE>
 
MML Series Investment Fund
 
STATEMENT OF OPERATIONS

For the Six Months Ended June 30, 1997
(Unaudited)
<TABLE> 
<CAPTION> 
                                                                                       MML             MML
                                                                      MML             Money           Managed          MML
                                                                     Equity           Market           Bond           Blend
                                                                      Fund             Fund            Fund            Fund 
                                                                    --------         --------        --------        --------   
<S>                                                              <C>              <C>              <C>            <C> 
Investment income (Note 2B)
Dividends....................................................    $   21,944,135   $           --   $         --   $   15,932,701
Interest.....................................................         3,630,945        3,924,447      6,620,031       29,052,238
                                                                 --------------   --------------   ------------   --------------
  Total income...............................................        25,575,080        3,924,447      6,620,031       44,984,939
                                                                 --------------   --------------   ------------   --------------
Expenses
Investment management fee (Note 4)...........................         3,624,437          345,589        439,510        4,168,922
Trustees' fees...............................................            20,963           16,848         16,848           16,848
Audit fees...................................................            13,996            9,781         12,543           15,100
Other........................................................               307              208            208              244
                                                                 --------------   --------------   ------------   --------------
  Total expenses.............................................         3,659,703          372,426        469,109        4,201,114
                                                                 --------------   --------------   ------------   --------------
Net investment income (Note 2C)..............................        21,915,377        3,552,021      6,150,922       40,783,825
                                                                 --------------   --------------   ------------   --------------
Net realized and unrealized gain (loss) on investments and
 forward commitments (Notes 2A, 2B and 2D)
Net realized gain (loss) on:
 Investments (Notes 2B and 2C)...............................        56,606,098             (833)      (225,826)      58,024,321
 Forward commitments (Note 2D)...............................                --               --             --            9,180
                                                                 --------------   --------------   ------------   --------------
  Net realized gain (loss)...................................        56,606,098             (833)      (225,826)      58,033,501
                                                                 --------------   --------------   ------------   --------------
Change in net unrealized appreciation/depreciation on:
 Investments (Note 2A).......................................       218,846,932               --       (348,840)     148,720,545
 Forward commitments (Note 2D)...............................                --               --             --           (6,411)
                                                                 --------------   --------------   ------------   --------------
  Total change in net unrealized appreciation/depreciation...       218,846,932               --       (348,840)     148,714,134
                                                                 --------------   --------------   ------------   --------------
Net gain (loss)..............................................       275,453,030             (833)      (574,666)     206,747,635
                                                                 --------------   --------------   ------------   --------------
Net increase in net assets resulting from operations.........    $  297,368,407   $    3,551,188   $  5,576,256   $  247,531,460
                                                                 ==============   ==============   ============   ==============
</TABLE> 
 
                      See Notes to Financial Statements. 

                                       7
<PAGE>
 
MML Series Investment Fund
 
STATEMENT OF CHANGES IN NET ASSETS
<TABLE> 
<CAPTION> 
                                                       For the Six Months Ended June 30, 1997              
                                            -------------------------------------------------------------   
                                                                    (Unaudited)                            
                                                                                                          
                                                                 MML            MML                        
                                                 MML            Money         Managed           MML        
                                                Equity          Market         Bond            Blend       
                                                 Fund            Fund          Fund            Fund       
                                              ---------        --------      ---------       --------       
<S>                                         <C>              <C>            <C>            <C>  
Increase (decrease)                                                                                       
 in net assets                                                                                            
Operations:                                                                                               
Net investment income..................     $   21,915,377   $  3,552,021   $  6,150,922   $   40,783,825  
Net realized gain (loss)                                                                                  
 on investments and                                                                                       
 forward commitments...................         56,606,098           (833)      (225,826)      58,033,501  
Change in net unrealized                                                                                  
 appreciation/depreciation on                                                                             
 investments and forward                                                                                  
 commitments...........................        218,846,932             --       (348,840)     148,714,134  
                                            --------------   ------------   ------------   --------------    
Net increase in net assets                                                                                
 resulting from operations.............        297,368,407      3,551,188      5,576,256      247,531,460  
 Dividends to shareholders                                                                                
  from: (Note 2C)                                                                                         
  Distribution of net investment                                                                                               
   income..............................            (25,000)    (3,551,188)    (3,026,896)     (19,788,536) 
  Distribution of net realized gains                    --             --             --               --  
 Net increase (decrease) in capital    
  share transactions (Note 6)..........        194,125,198     (1,305,456)     4,994,800      120,188,711  
                                            --------------   ------------   ------------   --------------    
  Total increase (decrease)............        491,468,605     (1,305,456)     7,544,160      347,931,635  

NET ASSETS, at beginning                                                                                  
 of the year...........................      1,701,998,369    145,231,042    181,572,285    2,093,990,240  
                                            --------------   ------------   ------------   --------------    
NET ASSETS, at end                                                                                        
 of the period.........................     $2,193,466,974   $143,925,586   $189,116,445   $2,441,921,875  
                                            ==============   ============   ============   ==============    
Undistributed net investment                                                                              
 income (loss) included in net                                                                                                      
  assets at end of the period..........     $   21,906,303   $        802   $  3,059,925   $   20,994,420  
                                            ==============   ============   ============   ==============    
<CAPTION> 
                                                         For the Year Ended December 31, 1996
                                            --------------------------------------------------------------- 
                                           
                                                                  MML             MML
                                                 MML             Money          Managed           MML
                                                Equity           Market          Bond            Blend
                                                 Fund             Fund           Fund            Fund 
                                               --------         --------       ---------       ---------     
<S>                                         <C>              <C>              <C>            <C>  
Increase (decrease)            
 in net assets                 
Operations:                    
Net investment income..................     $   40,173,966   $    6,159,608   $ 11,199,858   $   77,932,170
Net realized gain (loss)       
 on investments and            
 forward commitments...................         39,133,328               32       (404,955)      51,283,628
Change in net unrealized       
 appreciation/depreciation on  
 investments and forward       
 commitments...........................        204,554,604               --     (4,664,274)     137,449,802
                                            --------------   --------------   ------------   --------------   
Net increase in net assets     
 resulting from operations                     283,861,898        6,159,640      6,130,629      266,665,600
 Dividends to shareholders     
  from: (Note 2C)              
  Distribution of net investment                    
   income..............................        (40,161,778)      (6,159,640)   (11,099,070)     (77,800,925)
  Distribution of net realized gains...        (39,133,328)              --             --      (51,065,539)
Net increase (decrease) in capital 
  share transactions (Note 6)..........        248,532,571       36,310,841     27,842,588      133,050,174
                                            --------------   --------------   ------------   --------------   
 Total increase (decrease).............        453,099,363       36,310,841     22,874,147      270,849,310

NET ASSETS, at beginning       
 of the year...........................      1,248,899,006      108,920,201    158,698,138    1,823,140,930
                                            --------------   --------------   ------------   --------------   
NET ASSETS, at end             
 of the period.........................     $1,701,998,369   $  145,231,042   $181,572,285   $2,093,990,240
                                            ==============   ==============   ============   ==============   
Undistributed net investment   
 income (loss) included in net                           
  assets at end of the period..........     $       15,927   $        9,702   $    (64,100)  $         (870)
                                            ==============   ==============   ============   ==============   
</TABLE>

                      See Notes to Financial Statements.

                                       8
<PAGE>
 
FINANCIAL HIGHLIGHTS

Selected per share data for each series share outstanding throughout:


                                MML EQUITY FUND
<TABLE>
<CAPTION>
                           Six Months
                             Ended                                        Year Ended December 31,
                            June 30,      ------------------------------------------------------------------------------------------
                              1997        1996        1995       1994      1993      1992      1991      1990       1989      1988
                              ----        ----        ----       ----      ----      ----      ----      ----       ----      ---- 
                           (Unaudited)
<S>                        <C>         <C>         <C>         <C>       <C>       <C>       <C>       <C>        <C>       <C>
Net asset value:
 Beginning of year.......  $  29.786   $  25.924   $  20.520   $20.510   $19.862   $18.735   $15.659   $16.764    $14.929   $13.828
                           ---------   ---------   ---------   -------   -------   -------   -------   -------    -------   -------
Income from
 investment operations:
Net investment income....       .180        .703        .634      .594      .524      .543      .563      .636       .694      .646
Net realized and
 unrealized gain (loss)
 on investments..........      4.618       4.547       5.754      .248     1.365     1.420     3.440     (.722)     2.746     1.660
                           ---------   ---------   ---------   -------   -------   -------   -------   -------    -------   -------
Total from investment
 operations..............      4.798       5.250       6.388      .842     1.889     1.963     4.003     (.086)     3.440     2.306
                           ---------   ---------   ---------   -------   -------   -------   -------   -------    -------   -------
Less distributions:
Dividends from net
 investment income.......      (.001)      (.703)      (.634)    (.594)    (.524)    (.543)    (.562)    (.665)     (.711)    (.639)
Distribution from net
 realized gains..........         --       (.685)      (.350)    (.238)    (.717)    (.288)    (.365)    (.354)     (.894)    (.566)
Distribution in excess
 of net realized gains...         --          --          --        --        --     (.005)       --        --         --        --
                           ---------   ---------   ---------   -------   -------   -------   -------   -------    -------   -------
Total distributions......      (.001)     (1.388)      (.984)    (.832)   (1.241)    (.836)    (.927)   (1.019)    (1.605)   (1.205)
                           ---------   ---------   ---------   -------   -------   -------   -------   -------    -------   -------
Net asset value:
 End of period...........  $  34.583   $  29.786   $  25.924   $20.520   $20.510   $19.862   $18.735   $15.659    $16.764   $14.929
                           =========   =========   =========   =======   =======   =======   =======   =======    =======   =======

Total return.............      16.11%*     20.25%      31.13%     4.10%     9.52%    10.48%    25.56%     (.51%)    23.04%    16.68%

Net assets (in millions):
 End of period...........  $2,193.47   $1,701.99   $1,248.90   $820.78   $663.09   $490.62   $355.04   $235.45    $226.41   $172.80
Ratio of expenses to
 average net assets......        .19%*       .38%        .41%      .43%      .44%      .46%      .48%      .49%       .50%      .50%
Ratio of net investment
 income to average net
 assets..................       1.12%*      2.65%       2.89%     3.04%     3.23%     3.09%     3.43%     4.09%      4.30%     4.05%
Portfolio turnover rate..       7.51%*     11.42%      11.72%     9.99%    11.28%     9.07%     9.37%    13.50%     15.71%    15.97%

</TABLE>
                             MML MONEY MARKET FUND

<TABLE>
<CAPTION>
                           Six Months
                             Ended                                        Year Ended December 31,
                            June 30,      ------------------------------------------------------------------------------------------
                              1997        1996       1995       1994      1993      1992      1991      1990       1989      1988   
                              ----        ----       ----       ----      ----      ----      ----      ----       ----      ----   
                          (Unaudited)                                                                                               
<S>                        <C>          <C>        <C>        <C>       <C>        <C>       <C>       <C>        <C>       <C> 
Net asset value:
 Beginning of year.......  $ 1.000      $ 1.000    $ 1.000    $ 1.000   $ 1.000    $ 1.000   $ 1.000   $ 1.000    $ 1.000   $ 1.000
                           -------      -------    -------    -------   -------    -------   -------   -------    -------   -------
Income from investment
 operations:
Net investment income....     .025         .049       .054       .038      .027       .034      .059      .078       .088      .072
                           -------      -------    -------    -------   -------    -------   -------   -------    -------   -------
Total from investment
 operations..............     .025         .049       .054       .038      .027       .034      .059      .078       .088      .072
                           -------      -------    -------    -------   -------    -------   -------   -------    -------   -------
Less distributions:
Dividends from net
 investment income.......    (.025)       (.049)     (.054)     (.038)    (.027)     (.034)    (.059)    (.078)     (.088)    (.072)
                           -------      -------    -------    -------   -------    -------   -------   -------    -------   -------
Total distributions......    (.025)       (.049)     (.054)     (.038)    (.027)     (.034)    (.059)    (.078)     (.088)    (.072)
                           -------      -------    -------    -------   -------    -------   -------   -------    -------   -------
Net asset value:
 End of period...........  $ 1.000      $ 1.000    $ 1.000    $ 1.000   $ 1.000    $ 1.000   $ 1.000   $ 1.000    $ 1.000   $ 1.000
                           =======      =======    =======    =======   =======    =======   =======   =======    =======   =======

Total return.............     2.49%*       5.01%      5.58%      3.84%     2.75%      3.48%     6.01%     8.12%      9.16%     7.39%

Net assets (in millions):
 End of period...........  $143.93      $145.23    $108.92    $ 91.79   $ 73.66    $ 84.56   $ 94.41   $114.59    $ 70.16   $ 66.35
Ratio of expenses to
 average net assets......      .26%*        .52%       .54%       .55%      .54%       .53%      .52%      .54%       .54%      .55%
Ratio of net investment
 income to average net
 assets..................     2.47%*       4.92%      5.43%      3.81%     2.71%      3.42%     5.91%     7.80%      8.79%     7.20%
</TABLE> 

                      See Notes to Financial Statements.

                                       9
<PAGE>
 
FINANCIAL HIGHLIGHTS (Continued)

                             MML MANAGED BOND FUND

<TABLE>
<CAPTION>
                           Six Months
                             Ended    
                            June 30,                                      Year Ended December 31,
                                        --------------------------------------------------------------------------------------------
                              1997      1996       1995       1994       1993       1992      1991      1990       1989      1988
                              ----      ----       ----       ----       ----       ----      ----      ----       ----      ---- 
                          (Unaudited) 
<S>                        <C>        <C>        <C>        <C>        <C>        <C>       <C>       <C>        <C>       <C> 
Net asset value:
 Beginning of year.......  $ 12.048   $ 12.448   $ 11.141   $ 12.405   $ 12.041   $ 12.219  $ 11.318  $ 11.354   $ 10.919  $ 11.052
                           --------   --------   --------   --------   --------   --------  --------  --------   --------  --------
Income from investment                                                                                                             
 operations:                                                                                                                       
Net investment income....      .402       .776       .782       .792       .785       .870      .903      .943       .918      .906
Net realized and                                                                                                                   
 unrealized gain (loss)                                                                                                            
 on investments and                                                                                                                
 forward commitments.....     (.048)     (.401)     1.307     (1.264)      .618       .001      .916     (.036)      .454     (.133)
                           --------   --------   --------   --------   --------   --------  --------  --------   --------  --------
Total from investment                                                                                                               
 operations..............      .354       .375      2.089      (.472)     1.403       .871     1.819      .907      1.372      .773 
                           --------   --------   --------   --------   --------   --------  --------  --------   --------  --------
Less distributions:                                                                                                                 
Dividends from net                                                                                                                  
 investment income.......     (.196)     (.775)     (.782)     (.792)     (.784)     (.869)    (.902)    (.943)     (.918)    (.906)
Distribution from net                                                                                                               
 realized gains..........        --         --         --         --      (.255)     (.158)    (.016)       --      (.019)       -- 
Distribution in excess                                                                                                              
 of net realized gains...        --         --         --         --         --      (.022)       --        --         --        -- 
                           --------   --------   --------   --------   --------   --------  --------  --------   --------  --------

Total distributions......     (.196)     (.775)     (.782)     (.792)    (1.039)    (1.049)    (.918)    (.943)     (.937)    (.906)
                           --------   --------   --------   --------   --------   --------  --------  --------   --------  --------

Net asset value:                                                                                                                    
 End of period...........  $ 12.206   $ 12.048   $ 12.448   $ 11.141   $ 12.405   $ 12.041  $ 12.219  $ 11.318   $ 11.354  $ 10.919 
                           ========   ========   ========   ========   ========   ========  ========  ========   ========  ========

Total return.............     3.00%*     3.25%     19.14%     (3.76%)    11.81%      7.31%    16.66%     8.38%     12.83%     7.13%

Net assets (in millions):                                                                                                           
 End of period...........  $ 189.12   $ 181.57   $ 158.70   $ 121.21   $ 129.11   $  88.15  $  66.98  $  43.07   $  40.03  $  31.35 
Ratio of expenses to                                                                                                                
 average net assets......      .25%*      .51%       .52%       .52%       .54%       .56%      .57%      .57%       .59%      .61%
Ratio of net investment                                                                                                             
 income to average net 
 assets..................     3.31%*     6.54%      6.63%      6.69%      6.37%      7.28%     7.96%     8.40%      8.35%     8.25%
Portfolio turnover rate..    22.60%*    46.12%     70.00%     32.77%     58.81%     39.51%    61.85%    69.93%     64.77%    74.92%

</TABLE>

                      See Notes to Financial Statements.

                                       10
<PAGE>
 
FINANCIAL HIGHLIGHTS (Continued)

                                 MML BLEND FUND

<TABLE>
<CAPTION>
                       Six Months
                         Ended                                        Year Ended December 31,
                        June 30,     -----------------------------------------------------------------------------------------------
                          1997       1996        1995        1994        1993        1992      1991      1990      1989      1988
                          ----       ----        ----        ----        ----        ----      ----      ----      ----      ----
                       (Unaudited)                                                                                          
<S>                    <C>        <C>         <C>         <C>         <C>         <C>         <C>       <C>        <C>      <C>
Net asset value:                                                                                                            
 Beginning of                                                                                                               
  year...............  $ 21.973   $  20.519   $  17.672   $  18.305   $  17.846   $  17.307   $14.839   $15.428   $13.876   $13.095
                       --------   ---------   ---------   ---------   ---------   ---------   -------   -------   -------   ------- 
Income from                                                                                                                        
 investment                                                                                                                        
 operations:                                                                                                                       
Net investment                                                                                                                     
 income..............      .409        .824        .811        .707        .655        .707      .736      .792      .823      .734
Net realized and                                                                                                                   
 unrealized gain                                                                                                                   
 (loss) on invest-                                                                                                                 
 ments and forward                                                                                                                 
 commitments.........     2.064       1.990       3.246       (.271)      1.057        .880     2.771     (.445)    1.921     1.000
                       --------   ---------   ---------   ---------   ---------   ---------   -------   -------   -------   ------- 
Total from                                                                                                                         
 investment                                                                                                                        
 operations..........     2.473       2.814       4.057        .436       1.712       1.587     3.507      .347     2.744     1.734
                       --------   ---------   ---------   ---------   ---------   ---------   -------   -------   -------   ------- 
Less distributions:                                                                                                                
Dividends from net                                                                                                                 
 investment income...     (.200)      (.824)      (.811)      (.707)      (.655)      (.707)    (.736)    (.811)    (.835)    (.728)
Distribution from                                                                                                                   
 net realized gains..        --       (.536)      (.399)      (.359)      (.598)      (.326)    (.303)    (.125)    (.357)    (.225)
Distribution in                                                                                                                     
 excess of net                                                                                                                      
 realized gains......        --          --          --       (.003)         --       (.015)       --        --        --        -- 
                       --------   ---------   ---------   ---------   ---------   ---------   -------   -------   -------   ------- 
Total distributions..     (.200)     (1.360)     (1.210)     (1.069)     (1.253)     (1.048)   (1.039)    (.936)   (1.192)    (.953)
                       --------   ---------   ---------   ---------   ---------   ---------   -------   -------   -------   ------- 
Net asset value:                                                                                                                    
 End of period.......  $ 24.246   $  21.973   $  20.519   $  17.672   $  18.305   $  17.846   $17.307   $14.839   $15.428   $13.876 
                       ========   =========   =========   =========   =========   =========   =======   =======   =======   =======
 
Total return.........    11.34%*     13.95%      23.28%       2.48%       9.70%       9.36%    24.00%     2.37%    19.96%    13.40%

Net assets                                                                                                                          
 (in millions):                                                                                                                     
 End of period.......  $2441.92   $2,093.99   $1,823.14   $1,444.26   $1,296.54   $1,013.28   $797.04   $574.15   $524.29   $401.22 
Ratio of expenses                                                                                                                   
 to average net                                                                                                                     
 assets..............      .18%*       .38%        .38%        .39%        .40%        .41%      .42%      .44%      .45%      .46%
Ratio of net invest-                                                                                                                
 ment income to                                                                                                                     
 average net assets..     1.79%*      3.87%       4.19%       3.93%       3.60%       4.07%     4.54%     5.37%     5.57%     5.29%
Portfolio turnover                                
 rate................    11.67%*     19.10%      30.78%      26.59%      20.20%      25.43%    26.92%    24.55%    22.39%    25.70%

</TABLE> 

*Percentages represent results for the period and are not annualized.

Total return information shown in the Financial Highlights tables does not
reflect expenses that apply at the separate account level or to related
insurance products. Inclusion of these charges would reduce the total return
figures for all periods shown.

                      See Notes to Financial Statements.

                                       11
<PAGE>
 
MML Equity Fund

SCHEDULE OF INVESTMENTS

June 30, 1997
(Unaudited)
<TABLE>                                                                       
<CAPTION>                                                                     
                                                    Number          Market    
                                                      of            Value     
                                                    Shares        (Note 2A)   
                                                   --------      -----------  
<S>                                              <C>           <C>            
EQUITIES - 93.24%

Aerospace & Defense - 2.74%
 The Boeing Company .........................       325,000    $  17,245,150
 Raytheon Company ...........................       560,000       28,560,000
 TRW, Inc. ..................................       250,400       14,225,725
                                                 ----------    ------------- 
                                                  1,135,400       60,030,875
                                                 ----------    ------------- 
Agribusiness - .86%
 Archer-Daniels-Midland......................        75,000        1,762,500
 Pioneer Hi-Bred International, Inc. ........       235,000       18,800,000
                                                 ----------    ------------- 
                                                    310,000       20,562,500
                                                 ----------    ------------- 
Apparel, Textiles, Shoes - 1.02%
 VF Corporation .............................       265,000       22,458,750
                                                 ----------    ------------- 
Automotive & Parts - 5.04%
 Ford Motor Company .........................       950,000       35,862,500
 Genuine Parts Company ......................       860,250       29,140,969
 Goodyear Tire & Rubber Company .............       720,000       45,584,640
                                                 ----------    ------------- 
                                                  2,530,250      110,588,109
                                                 ----------    ------------- 
Banking, Savings & Loans - 6.26%
 The Bank of New York Company,
  Incorporated ..............................       870,000       37,845,000
 Comerica, Incorporated .....................       323,500       21,998,000
 CoreStates Financial Corporation ...........       585,500       31,470,625
 Norwest Corporation ........................       391,000       21,993,750
 Pacific Century Financial Corporation ......       156,100        7,219,625
 Wachovia Corporation .......................       288,200       16,805,518
                                                 ----------    ------------- 
                                                  2,614,300      137,332,518
                                                 ----------    ------------- 
Beverages - 1.74%
 Brown-Forman Corporation (Class B) .........       337,300       16,464,288
 Pepsico, Incorporated ......................       580,000       21,785,960
                                                 ----------    ------------- 
                                                    917,300       38,250,248
                                                 ----------    ------------- 
Chemicals - 4.48%
 E.I. du Pont de Nemours and Company ........       333,000       20,937,375
 The Lubrizol Corporation ...................       565,000       23,694,405
 Nalco Chemical Company .....................       539,300       20,830,463
 Rohm & Haas ................................       365,000       32,872,630
                                                 ----------    ------------- 
                                                  1,802,300       98,334,873
                                                 ----------    ------------- 
Communications - 2.18%
 AT&T Corporation ...........................       176,100        6,174,418
 GTE Corporation ............................       946,800       41,540,850
                                                 ----------    ------------- 
                                                  1,122,900       47,715,268
                                                 ----------    ------------- 
Computers & Office Equipment - 7.30%
 Hewlett-Packard Company ....................       640,000       35,840,000
 International Business Machines Corporation.       490,000       44,191,630
 Pitney Bowes, Inc. .........................       552,000       38,364,000
 Xerox Corporation ..........................       530,000       41,803,750
                                                 ----------    ------------- 
                                                  2,212,000      160,199,380
                                                 ----------    ------------- 
Containers - .81%
 Temple-Inland, Inc. ........................       330,000       17,820,000
                                                 ----------    ------------- 
Cosmetics & Personal Care - 1.63%
 Kimberly-Clark Corporation .................       720,000       35,820,000
                                                 ----------    ------------- 
Electric Utilities - 2.10%
 NIPSCO Industries, Inc. ....................       208,000        8,592,896
 SCANA Corporation ..........................       785,200       19,482,382
 Teco Energy Inc. ...........................       704,700       18,013,541
                                                 ----------    ------------- 
                                                  1,697,900       46,088,819
                                                 ----------    ------------- 
Electrical Equipment & Electronics - 6.61%
 AMP, Incorporated ..........................       955,000       39,871,250
 General Electric Company ...................       977,000       63,871,375
 Honeywell Inc. .............................       232,500       17,640,938
 Hubbell, Incorporated (Class B) ............       504,144       22,182,336
 New England Electric .......................        38,600        1,428,200
                                                 ----------    ------------- 
                                                  2,707,244      144,994,099
                                                 ----------    ------------- 
Energy - 6.27%
 Amoco Corporation ..........................       387,500       33,688,088
 Eni, SPA - ADR .............................       195,100       11,096,312
 Kerr-McGee Corporation .....................       226,000       14,322,750
 Mobil Corporation ..........................       360,000       25,155,000
 Occidental Petroleum Corp. .................       754,600       18,911,785
 Union Pacific Resources Group ..............       703,700       17,504,538
 Unocal Corporation .........................       432,100       16,770,665
                                                 ----------    ------------- 
                                                  3,059,000      137,449,138
                                                 ----------    ------------- 
Financial Services - 1.36%
 American Express Company ...................       400,000       29,800,000
                                                 ----------    ------------- 
Foods - 2.73%
 ConAgra, Inc. ..............................       515,500       33,056,438
 CPC International, Inc. ....................       291,500       26,908,948
                                                 ----------    ------------- 
                                                    807,000       59,965,386
                                                 ----------    ------------- 
Forest Products & Paper - 2.27%
 Westvaco Corporation .......................       773,055       24,302,530
 Weyerhaeuser Company .......................       490,600       25,511,200
                                                 ----------    ------------- 
                                                  1,263,655       49,813,730
                                                 ----------    ------------- 
Hardware & Tools - .82%
 The Stanley Works ..........................       451,000       18,040,000
                                                 ----------    ------------- 
Healthcare - 8.13%
 Becton, Dickinson and Company ..............       536,000       27,135,000
 Bristol-Myers Squibb Company ...............     1,040,000       84,240,000
 Pfizer, Incorporated .......................       134,800       16,108,600
 Pharmacia & Upjohn Inc. ....................       579,000       20,120,250
 Schering-Plough Corp. ......................       643,000       30,783,624
                                                 ----------    ------------- 
                                                  2,932,800      178,387,474
                                                 ----------    ------------- 
Industrial Distribution - .88%
 W. W. Grainger, Inc. .......................       246,000       19,234,002
                                                 ----------    ------------- 
Industrial Transportation - 1.36%
 Burlington Northern Sante Fe ...............       311,200       27,969,100
 Norfolk Southern Corporation ...............       296,000       29,822,000
                                                 ----------    ------------- 
                                                    607,200       57,791,100
                                                 ----------    -------------  
</TABLE> 

                                       12
<PAGE>
 
MML Equity Fund

SCHEDULE OF INVESTMENTS (Continued)

June 30, 1997
(Unaudited)
<TABLE>                                                                      
<CAPTION>                                                                    
                                                    Number          Market   
                                                      of            Value    
                                                    Shares        (Note 2A)  
                                                   --------      -----------  
<S>                                              <C>           <C>             
EQUITIES (Continued)

Insurance - 5.86%
 Jefferson-Pilot Corporation ................       312,000    $  21,801,000
 Marsh & McLennan Companies, Inc. ...........       561,000       40,041,375
 MBIA, Inc. .................................       268,000       30,233,616
 SAFECO Corporation .........................       782,500       36,532,578
                                                 ----------    ------------- 
                                                  1,923,500      128,608,569
                                                 ----------    -------------  
Machinery & Components - 2.05%
 Dover Corporation ..........................       325,000       19,987,500
 Parker-Hannifin Corporation ................       412,050       25,006,078
                                                 ----------    -------------  
                                                    737,050       44,993,578
                                                 ----------    -------------  
Miscellaneous
 Harsco Corporation .........................       339,000       13,729,500
 Minnesota Mining & Manufacturing Company ...       204,500       20,859,000
 Fall Corporation ...........................       604,000       14,043,000
                                                 ----------    -------------  
                                                  1,147,500       48,631,500
                                                 ----------    -------------  
Photography - .94%
 Eastman Kodak Company ......................       268,800       20,630,400
                                                 ----------    -------------  
Publishing & Printing - 2.34%
 McGraw-Hill Companies, Inc. ................       500,000       29,406,000
 R.R. Donnelley & Sons Company ..............       600,000       21,975,000
                                                 ----------    -------------  
                                                  1,100,000       51,381,000
                                                 ----------    -------------  
Retail - 2.45%
 The May Department Stores Company ..........       593,000       28,019,250
 Sears Roebuck and Company ..................       479,300       25,762,375
                                                 ----------    -------------  
                                                  1,072,300       53,781,625
                                                 ----------    -------------  
Retail - Grocery - 3.35%
 Albertson's, Inc. ..........................     1,148,500       41,920,250
 American Stores Company ....................       639,100       31,555,563
                                                 ----------    -------------  
                                                  1,787,600       73,475,813
                                                 ----------    -------------  
Telephone Utilities - 3.50%
 Ameritech Corporation ......................       347,000       23,574,139
 Frontier Corporation .......................     1,096,200       21,854,939
 Pinnacle West Capital ......................       425,100       12,779,356
 Southern New England 
  Telecommunications Corporation ............       475,400       18,481,175
                                                 ----------    -------------  
                                                  2,343,700       76,689,609
                                                 ----------    -------------  
Tobacco - 2.57%
 Fortune Brands, Inc. .......................       463,000       17,275,456
 Gallaher Group PLC .........................       463,000        8,536,331
 UST, Inc. ..................................     1,100,500       30,538,875
                                                 ----------    -------------  
                                                  2,026,500       56,350,662
                                                 ----------    -------------   
Total Equities
 (Cost $1,251,426,499) ......................                  2,045,219,025
                                                               -------------  
<CAPTION> 
                                                   Principal
                                                    Amount  
                                                  ----------- 
<S>                                              <C>           <C>             
SHORT-TERM INVESTMENTS - 7.28%

Commercial Paper
 AIG Funding, Inc.
  5.200%      7/23/97 .......................    $ 10,000,000  $   9,964,617
 AIG Funding, Inc.
  6.100%      7/1/97 ........................       5,000,000      5,000,000
 Abbott Laboratories
  5.470%      7/09/97 .......................       6,258,000      6,250,393
 American Telephone & Tel
  5.240%      7/18/97 .......................       4,000,000      3,989,147
 American Telephone & Tel
  5.240%      8/21/97 .......................      10,000,000      9,914,400
 Anheuser Busch Cos, Inc.
  5.550%      8/29/97 .......................       5,000,000      4,952,083
 Anheuser Busch Cos, Inc.
  5.540%      7/7/97 ........................       7,330,000      7,323,232
 Coca Cola Company
  5.450%      7/29/97........................       9,467,000      9,426,870
 E.I. du Pont de Nemours and Company
  5.630%      11/12/97 ......................       5,000,000      4,892,188
 E.I. du Pont de Nemours and Company
  5.610%      12/4/97 .......................       7,014,000      6,838,114
 Eastman Kodak Company
  5.525%      7/21/97 .......................      15,662,000     15,613,926
 First Union National Bank
  5.500%      7/3/97 ........................       6,000,000      5,998,167
 Ford Motor Credit Company
  5.620%      12/08/97 ......................       5,000,000      4,871,424
 Ford Motor Credit Company
  5.580%      12/9/97 .......................       5,000,000      4,870,625
 General Electric Capital Corporation
  5.580%      12/8/97 .......................       4,000,000      3,897,139
 IBM Credit Corporation
  5.520%      8/25/97 .......................       3,000,000      2,973,199
 IBM Corporation
  5.520%      7/22/97 .......................      12,000,000     11,961,360
 J P Morgan
  5.510%      7/28/97 .......................       9,000,000      8,962,808
 Pepsico, Inc.
  5.500%      7/14/97 .......................      10,000,000      9,980,139
 Transamerica Finance Corp.
  6.200%      7/1/97 ........................       7,008,000      7,008,000
 Walt Disney Company
  5.470%      7/21/97 .......................      15,000,000     14,954,417
                                                 ------------  ------------- 
Total Short-Term Investments
  (Cost $159,680,514) .......................    $160,739,000    159,642,248
                                                 ============  ------------- 
<CAPTION> 
<S>                                     <C>                  <C> 
Total Investments -
 (Cost $1,411,107,013) (a)              100.52%              $ 2,204,861,273
                                        =======              =============== 
<CAPTION> 
<S>                                                          <C> 
(a) Federal Income Tax Information: At
    June 30, 1997 the net unrealized
    appreciation on investments based on cost
    of $1,411,115,370 for federal income tax
    purposes is as follows:

    Aggregate gross unrealized appreciation for
    all investments in which there is an excess
    of market value over tax cost ........................   $   804,534,770

    Aggregate gross unrealized depreciation for
    all investments in which there is an excess
    of tax cost over market value ........................       (10,788,867)
                                                             ---------------  
    Net unrealized appreciation ..........................   $   793,745,903
                                                             ===============   

</TABLE> 

                      See Notes to Financial Statements.

                                       13
<PAGE>
 
MML Money Market Fund

SCHEDULE OF INVESTMENTS

June 30, 1997
(Unaudited)
<TABLE> 
<CAPTION> 
                                                                   Market
                                                  Principal        Value
                                                    Amount       (Note 2A) 
                                                 ------------   ------------
<S>                                              <C>           <C>             
SHORT-TERM INVESTMENTS - 100.54%

Commercial Paper - 96.84%
 Abbott Laboratories
  5.480%      8/5/97 ........................    $  4,790,000  $  4,764,480
 Anheuser-Busch Companies, Inc.
  5.600%      12/15/97 ......................       5,800,000     5,649,329
 Atlantic Richfield Corp.
  5.620%      11/14/97 ......................       1,200,000     1,174,523
 Becton, Dickinson and Company
  5.540%      9/29/97 .......................       2,900,000     2,859,835
 Bellsouth Telecommunications, Inc.
  5.520%      7/7/97 ........................       4,060,000     4,056,265
 Bemis Company Incorporated
  5.570%      7/15/97 .......................       5,740,000     5,727,567
 CIT Group Holdings Incorporated
  5.520%      8/07/97 .......................       3,995,000     3,972,335
 Carolina Power & Light Company
  5.530%      7/23/97 .......................       4,170,000     4,155,908
 Caterpillar Financial Services Corp.
  5.750%      10/7/97 .......................       1,725,000     1,697,999
 Caterpillar Financial Services Corp.
  5.700%      9/16/97 .......................       4,300,000     4,247,576
 Countrywide Home Loans
  5.580%      7/25/97 .......................       3,540,000     3,526,831
 Countrywide Home Loans
  5.580%      8/28/97 .......................       2,150,000     2,130,672
 E.I. du Pont de Nemours and Company
  5.570%      8/18/97 .......................       3,390,000     3,364,824
 E.I. du Pont de Nemours and Company
  5.630%      10/30/97 ......................       2,080,000     2,040,640
 Eastman Kodak Company
  5.490%      7/18/97 .......................       2,070,000     2,064,633
 Eastman Kodak Company
  5.500%      7/28/97 .......................       3,545,000     3,530,377
 Emerson Electric Company
  5.470%      7/24/97 .......................       5,560,000     5,540,569
 Ford Motor Credit Company
  5.550%      8/25/97 .......................         595,000       589,955
 GTE Corporation
  5.580%      9/12/97 .......................       4,930,000     4,874,217
 General Electric Company
  5.600%      7/17/97 .......................       2,145,000     2,139,661
 General Electric Company
  5.600%      9/2/97 ........................         470,000       465,394
 General Electric Company
  5.610%      10/15/97 ......................         520,000       511,410
 General Electric Company
  5.220%      11/14/97 ......................         150,000       147,042
 General Electric Company
  5.510%      7/1/97 ........................       2,465,000     2,465,000
 General Motors Acceptance Corporation
  5.700%      12/1/97 .......................       1,570,000     1,531,967
 Goldman Sachs & Company
  5.570%      8/4/97 ........................       3,035,000     3,019,034
 Hershey Goods Corporation
  5.510%      9/09/97 .......................       2,785,000     2,755,162
 Lilly (Eli) & Company
  5.330%      8/8/97 ........................       5,300,000     5,270,181
 Monsanto Company
  5.570%      8/29/97 .......................       1,950,000     1,932,199
 Nestle Capital Corporation
  5.500%      8/11/97 .......................       2,900,000     2,881,835
 Nestle Capital Corporation
  5.510%      9/8/97 ........................       2,730,000     2,701,169
 Northern Indiana Public Service
  5.540%      8/1/97 ........................       3,325,000     3,309,138
 Northern States Power Company
  5.600%      7/21/97 .......................       3,285,000     3,274,780
 Northern States Power Company
  5.550%      7/14/97 .......................       2,785,000     2,779,418
 NYNEX Corporation
  5.540%      7/31/97 .......................       5,500,000     5,474,608
 PPG Industries
  5.510%      7/29/97 .......................       5,000,000     4,978,572
 Pacific Gas & Electric Company
  5.540%      8/6/97 ........................       4,900,000     4,872,854
 Pitney Bowes Credit Corporation
  5.220%      7/21/97 .......................       4,720,000     4,706,312
 Proctor & Gamble Company
  5.520%      7/22/97 .......................       2,635,000     2,626,515
 Southwestern Bell Telephone Company
  5.500%      8/20/97 .......................       5,495,000     5,453,024
 Walt Disney Company
  5.530%      9/30/97 .......................       3,260,000     3,214,430
 Walt Disney Company
  5.550%      12/1/97 .......................       2,350,000     2,294,569
 Xerox Corporation
  5.540%      8/26/97 .......................       4,645,000     4,604,970
                                                 ------------  ------------
 Total Commercial Paper
  (Cost $139,377,799) .......................     140,460,000   139,377,779
                                                 ------------  ------------
U.S. Government Agency Obligations - 3.70%
 Federal Farm Credit Bank
  5.460%      11/3/97 .......................       5,425,000     5,322,151
                                                 ------------  ------------
 Total U.S. Government Agency Obligations
  (Cost $5,322,151) .........................       5,425,000     5,322,151
                                                 ------------  ------------
Total Short-Term Investments
 (Cost $144,699,930) (a) ....................    $145,885,000   144,699,930
                                                 ============  ------------
Total Investments -
 (Cost $144,699,930) (a) .........  100.54%                    $144,699,930
                                    =======                    ============
</TABLE>

(a) Federal Income Tax Information: The aggregate cost for investments for the
    MML Money Market Fund as of June 30, 1997 is the same for financial
    reporting and federal income tax purposes.

    June 30, 1997 seven-day average yield for the portfolio: 5.15%
 

                      See Notes to Financial Statements.

                                       14
<PAGE>
 
MML Managed Bond Fund

SCHEDULE OF INVESTMENTS

June 30, 1997
(Unaudited)
<TABLE> 
<CAPTION> 
                                                                   Market
                                                  Principal        Value
                                                    Amount       (Note 2A) 
                                                 ------------   ------------
<S>                                              <C>           <C>            
BONDS AND NOTES - 98.02%

Asset Backed Securities - 8.82%
Auto Receivables
 Capita Equipment Receivables Trust 1996-1,
  Class A4
  6.280%      6/15/00 .......................    $  2,000,000  $  1,998,120
 Chase Manhattan Auto Grantor Trust 1996-B,
  Class A
  6.280%      6/15/00 .......................       3,763,035     3,777,147
 Daimler-Benz Auto Grantor Trust 1995-A,
  Class A
  5.850%      5/15/02 .......................       1,201,756     1,200,254
 Ford Credit 1994-B Grantor Trust
  7.300%      10/15/99 ......................         373,641       376,791
 Jet Equipment Trust 1995-A
  8.235%      5/1/15 ........................       1,924,039     2,061,107
 Keystone Auto Grantor Trust 1996-B,
  Class A 144A
  6.150%      4/15/03 .......................       1,110,042     1,108,388
 Nissan Auto Receivables 1994-A Grantor Trust,
  Class A
  6.450%      9/15/99 .......................         480,350       480,951
 Railcar Trust No. 1992-1
  7.750%      6/1/04 ........................       1,522,820     1,578,966
 World Omni 1995-A Automobile Lease
  Securitization Trust, Class A
  6.050%      11/25/01 ......................       2,257,899     2,259,298
 World Omni 1996-A Automobile Lease
  Securitization Trust, Class A1
  6.300%      6/25/02 .......................       1,843,805     1,848,414
                                                 ------------  ------------
Total Asset Backed Securities
 (Cost $16,682,524)                                16,477,387    16,689,436
                                                 ------------  ------------
Corporate Debt - 59.28%
 AirTouch Communications, Inc.
  7.500%      7/15/06 .......................       1,500,000     1,531,800
 American West Airlines 1996-1, Class A
  6.850%      7/2/09 ........................       1,750,000     1,704,063
 American Airlines, Inc.
  9.780%      11/26/11 ......................       2,000,000     2,275,000
 AMR Corporation
  9.000%      8/1/12 ........................       1,000,000     1,120,140
 Analog Devices, Inc.
  6.625%      3/1/00 ........................       1,000,000       994,310
 Associates Corporation of North America
  6.750%      8/1/01 ........................       1,000,000     1,001,240
 Associates Corporation of North America
  7.875%      9/30/01 .......................       2,000,000     2,084,400
 Atlantic Richfield Company
  7.770%      2/13/02 .......................       3,000,000     3,104,820
 Barrick Gold Corporation
  7.500%      5/01/07 .......................       2,000,000     2,046,140
 Bell Atlantic Financial Services, Inc.
  6.610%      2/4/00 ........................       2,000,000     2,004,720
 BHP Finance (USA) Limited
  6.420%      3/1/26 ........................       2,000,000     1,959,760
 Carlisle Companies, Inc.
  7.250%      1/15/07 .......................       1,500,000     1,497,165
 Champion International Corporation
  6.400%      2/15/26 .......................       1,500,000     1,427,610
 Charles Schwab Corporation
  6.250%      1/23/03 .......................       2,000,000     1,925,000
 CITGO Petroleum Corporation
  7.875%      5/15/06 .......................         750,000       774,900
 Columbia Gas System, Inc.
  6.610%      11/28/02 ......................       2,000,000     1,977,400
 Commercial Credit Company
  7.750%      3/1/05 ........................       3,000,000     3,117,120
 Comcast Cablevision-PH
  8.375%      5/1/07 ........................       1,250,000     1,322,338
 Continental Airlines, Inc. Series 1996-B
  7.820%      10/15/13 ......................       1,470,588     1,516,500
 Continental Airlines, Inc. Series 1996-2B
  8.560%      7/2/14 ........................         972,107     1,048,660
 Corning Glass Works
  8.875%      3/15/16 .......................         500,000       556,970
 CSX Corporation
  7.250%      5/1/27 ........................       2,000,000     2,040,520
 Dow Capital
  7.125%      1/15/03 .......................       4,000,000     4,011,160
 English China Clays Delaware Inc.
  7.375%      10/1/02 .......................       1,000,000     1,017,100
 Equifax, Inc.
  6.500%      6/15/03 .......................       1,250,000     1,220,163
 ERAC USA Finance Company 144A
  6.950%      1/15/06 .......................       1,500,000     1,467,345
 FBG Finance Ltd. 144A
  7.875%      6/1/16 ........................       1,250,000     1,255,038
 First Brands Corporation
  7.250%      3/1/07 ........................         500,000       499,240
 Fletcher Challenge Ltd.
  7.750%      6/20/06 .......................       1,500,000     1,544,130
 Foodbrands America, Inc.
  10.750%     5/15/06 .......................       1,500,000     1,758,480
 Foster Wheeler Corporation
  6.750%      11/15/05 ......................       2,000,000     1,937,060
 General American Transportation Corporation
  6.750%      3/1/06 ........................       2,000,000     1,935,440
 General Electric Capital Corporation
  8.750%      5/21/07 .......................       1,000,000     1,126,040
 General Mills
  8.900%      6/15/06 .......................       1,000,000     1,114,050
 General Motors Acceptance Corporation
  6.300%      9/10/97 .......................       2,500,000     2,501,150
 Hercules Incorporated
  6.625%      6/1/03 ........................       1,000,000       985,850
 Hilton Hotels Corporation
  7.375%      6/1/02 ........................       1,000,000     1,007,170
 IMCERA Group, Inc.
  6.000%      10/15/03 ......................       2,000,000     1,907,620
 Leucadia National Corporation
  7.750%      8/15/13 .......................       2,000,000     1,949,560
 Lockheed Martin Corporation
  7.700%      6/15/08 .......................       1,500,000     1,564,560
 McDonnell Douglas Corporation
  9.250%      4/1/02 ........................       1,400,000     1,539,356
 Mapco, Inc.
  7.250%      3/1/09 ........................       1,500,000     1,501,380
 Metlife Capital Equipment
  6.850%      5/20/08 .......................         500,000       497,535
 Millipore Corporation
  7.500%      4/1/07 ........................       1,000,000     1,013,160
 Mobil Corporation
  8.625%      8/15/21 .......................       2,000,000     2,302,680
 MFS Communications
  0.000%      1/15/04 .......................       1,000,000       930,800
</TABLE> 
 

                                       15
<PAGE>
 
MML Blend Fund

SCHEDULE OF INVESTMENTS (Continued)

June 30, 1997
(Unaudited)

<TABLE>
<CAPTION>
                                                                          Market
                                                          Principal        Value
                                                            Amount       (Note 2A)
                                                         ------------  ------------
BONDS AND NOTES (Continued)
<S>                                                    <C>             <C>
Corporate Debt (Continued)
 Newmont Mining Corporation
  8.625%       4/1/02..............................    $    2,000,000  $    2,130,760
 News America Holdings Incorporated
  9.250%       2/1/13..............................         2,000,000       2,229,940
 Norfolk Southern Corporation
  7.050%       5/01/37.............................         2,500,000       2,537,350
 Orchard Supply Hardware
  9.375%       2/15/02.............................         1,500,000       1,572,285
 Penske Truck Leasing Co., L.P.
  7.750%       5/15/99.............................         1,250,000       1,280,900
 Petro Geo-Services
  7.500%       3/31/07.............................           500,000         503,795
 Polaroid Corporation
  8.000%       3/15/99.............................         1,000,000       1,023,950
 Ralston Purina Company
  7.750%       10/1/15.............................         3,000,000       3,041,400
 Rite Aid Corporation
  6.700%       12/15/01............................         1,000,000         992,410
 Rolls-Royce Capital Inc.
  7.125%       7/29/03.............................         1,500,000       1,506,045
 Scholastic Corporation
  7.000%       12/15/03............................         2,000,000       1,984,420
 Textron Inc.
  9.550%       3/19/01.............................         1,000,000       1,088,750
 Thomas & Betts Corporation
  8.250%       1/15/04.............................         1,500,000       1,584,495
 Time Warner, Inc.
  7.750%       6/15/05.............................         3,000,000       3,048,750
 Time Warner, Inc.
  6.100%       12/30/01............................           500,000         478,940
 United Air Lines, Inc.
  10.110%      2/19/06.............................           462,142         513,027
 US Air, Inc.
  7.500%       10/15/09............................           962,159         968,172
 US West Capital Funding Corporation
  8.375%       10/18/99............................         3,000,000       3,118,050
 US West Capital Funding Corporation
  6.850%       1/15/02.............................         2,000,000       1,997,860
 Valassis Communications, Inc.
  9.550%       12/1/03.............................         2,000,000       2,130,340
 Westinghouse Electric Corporation
  8.375%       6/15/02.............................           500,000         516,240
 Worldcom Inc.
  7.750%       4/1/07..............................         1,000,000       1,022,680
 W.R. Grace & Co.
  7.750%       10/1/02.............................         2,100,000       2,167,200
 W.R. Grace & Co.
  8.000%       8/15/04.............................         1,000,000       1,046,780
                                                       --------------  --------------
 Total Corporate Debt
 (Cost $111,723,776)...............................       109,366,996     112,101,182
                                                       --------------  --------------

U.S. Government Agency Obligations - 22.81%

Federal Home Loan Mortgage
 Corporation (FHLMC) - 3.07%

Collateralized Mortgage Obligations - 2.98%
 FHLMC Series 1322 Class G
  7.500%       2/15/07.............................    $    2,000,000  $    2,040,620
 FHLMC Series 1460 Class H
  7.000%       5/15/07.............................         2,000,000       2,007,500
 FHLMC Series 1080 Class D
  7.000%       7/15/20.............................         1,568,665       1,584,351
                                                       --------------  --------------
                                                            5,568,665       5,632,471


Pass-Through Securities - .09%
 FHLMC
  9.000%       3/1/17..............................           162,962         173,408
                                                       --------------  --------------
                                                            5,731,627       5,805,879
                                                       --------------  --------------
Federal National Mortgage
 Association (FNMA) - 6.90%

Collateralized Mortgage Obligations - 6.54%
 FNMA Series 1993-175 Class PL
  5.000%       10/25/02............................           468,248         466,052
 FNMA Series 1993-191 Class PD
  5.400%       3/25/04.............................         1,500,000       1,488,750
 FNMA Series 1993-221 Class D
  6.000%       12/25/08............................         1,000,000         956,250
FNMA Series 1993-134 Class GA
  6.500%       2/25/07.............................         2,000,000       1,981,860
FNMA Series 1996-54 Class C
  6.000%       9/25/08.............................         4,000,000       3,835,000
FNMA Series 1993-186 Class G
  6.250%       3/25/08.............................         3,700,000       3,637,544
                                                       --------------  --------------
                                                           12,668,248      12,365,456
Pass-Through Securities - .36%
 FNMA
     9.000%    5/1/09..............................           643,638         680,641
                                                       --------------  --------------
                                                           13,311,886      13,046,097
                                                       --------------  --------------
Government National Mortgage
 Association (GNMA) - 10.74%

Collateralized Mortgage Obligations - .44%
 JHM Acceptance Corporation, Series E, Class 5
  8.960%       4/1/19..............................           801,940         838,276
                                                       --------------  --------------
Pass-Through Securities - 10.29%
 GNMA
  8.000%       12/15/03 - 4/15/08..................         6,072,511       6,282,013
 GNMA
  7.500%       3/15/17 - 7/15/17...................         4,371,063       4,431,122
 GNMA - ARMS
  6.000%       7/20/25 - 12/20/25..................         8,597,169       8,751,066
                                                       --------------  --------------
                                                           19,040,743      19,464,201
                                                       --------------  --------------
                                                           19,842,683      20,302,477
                                                       --------------  --------------
</TABLE>



                                       16
<PAGE>
 
MML Managed Bond Fund

SCHEDULE OF INVESTMENTS (Continued)

June 30, 1997
(Unaudited)

<TABLE> 
<CAPTION> 
                                                                              Market      
                                                         Principal            Value       
                                                           Amount            (Note 2A)    
                                                       --------------     --------------  
<S>                                                   <C>                 <C>             
BONDS AND NOTES (Continued)                                                               
                                                                                          
U.S. Government Guaranteed Notes - 2.11%                                                  
 1994-A Atlanta, GA                                                                       
     5.780%    8/1/98...................               $      130,000     $      129,513  
 1994-A Baxter Springs, KS                                                                
     5.780%    8/1/98...................                      700,000            697,375  
 1994-A Boston, MA                                                                        
     5.780%    8/1/98...................                      745,000            742,206  
 1994-A Detroit, MI                                                                       
     5.780%    8/1/98...................                      385,000            383,556  
 1994-A Egg Harbor, NJ                                                                    
     5.780%    8/1/98...................                      260,000            259,025  
 1994-A Kansas City, MO                                                                   
     5.780%    8/1/98...................                      550,000            547,938  
 1994-A Mayaguez, PR                                                                      
     5.780%    8/1/98...................                      295,000            293,894  
 1994-A Rochester, NY                                                                     
     5.780%    8/1/98...................                      300,000            298,874  
 1994-A Sacramento, CA                                                                    
     5.780%    8/1/98...................                       55,000             54,794  
 1994-A Saginaw, MI                                                                       
     5.780%    8/1/98...................                      315,000            313,819  
 1994-A Youngstown, OH                                                                    
     5.780%    8/1/98...................                      265,000            264,006  
                                                       --------------     --------------  
                                                            4,000,000          3,985,000  
                                                       --------------     --------------  
                                                                                          
 Total U.S. Government Agency Obligations                                                 
  (Cost $42,491,921)....................                   42,886,196         43,139,453  
                                                       --------------     --------------  
U.S. Treasury Obligations - 7.11%                                                         
                                                                                          
U.S. Treasury Bonds - 2.29%                                                               
 U.S. Treasury Bond                                                                       
     7.250%    8/15/04..................                    1,000,000          1,042,500  
 U.S. Treasury Bond                                                                       
     7.250%    5/15/16..................                    3,150,000          3,284,852  
                                                       --------------     --------------  
                                                            4,150,000          4,327,352  
U.S. Treasury Strips - 4.82%                                                              
 U.S. Treasury Strip - Principal Only                                                     
     0.000%    2/15/15..................                   30,700,000          9,115,444  
                                                       --------------     --------------  
Total U.S. Treasury Obligations                                                           
 (Cost $13,057,868).....................                   34,850,000         13,442,796  
                                                       --------------     --------------  
Total Bonds and Notes                                                                     
  (Cost $183,956,089)...................               $  203,580,579        185,372,867  
                                                       ==============     ==============  
                                                                                          
SHORT-TERM INVESTMENTS - .22%                                                             
                                                                                          
Commercial Paper                                                                          
 Conagra                                                                                  
     6.120%    7/2/97...................               $      418,000     $      417,929  
                                                       --------------     --------------  
Total Short-Term Investments                                                              
 (Cost $417,929)........................               $      418,000            417,929  
                                                       ==============     --------------  
Total Investments                                                                         
 (Cost $184,374,018) (a)................          98.24%                  $  185,790,796  
                                                 =======                  ==============  

(a) Federal Income Tax Information: At                                                    
    June 30, 1997 the net unrealized                                                      
    depreciation on investments based on                                                  
    cost of $184,374,018 for federal income                                               
    tax purposes is as follows:                                                           
                                                                                          
    Aggregate gross unrealized appreciation for                                           
    all investments and forward commitments in                                            
    which there is an excess of market value over                                         
    tax cost........................................................      $    3,353,247  
                                                                                          
    Aggregate gross unrealized depreciation for                                           
    all investments and forward commitments in                                            
    which there is an excess of tax cost over                                             
    market value....................................................          (1,936,469) 
                                                                          --------------  
      Net unrealized appreciation...................................      $    1,416,778  
                                                                          ==============   
</TABLE> 

                      See Notes to Financial Statements.

                                       17
<PAGE>
 
MML Blend Fund

SCHEDULE OF INVESTMENTS

June 30, 1997
(Unaudited)

<TABLE> 
<CAPTION> 
                                                       Number          Market
                                                         of             Value
                                                       Shares         (Note 2A)
                                                       ------         ---------   
<S>                                             <C>                 <C> 
EQUITIES - 60.83%                                                               

Aerospace & Defense - 1.91%
 Boeing Company..............................         250,000       $  13,265,500
 Raytheon Company............................         410,000          20,910,000
 TRW, Inc....................................         218,600          12,419,103
                                                -------------       -------------
                                                      878,600          46,594,603
                                                -------------       -------------
Agribusiness - .71%
 Archer-Daniels-Midland Company..............          54,400           1,278,400
 Pioneer Hi-Bred International, Inc..........         200,000          16,000,000
                                                -------------       -------------
                                                      254,400          17,278,400
                                                -------------       -------------
Apparel, Textiles, Shoes - .69%
 VF Corporation..............................         200,000          16,950,000
                                                -------------       -------------
Automotive & Parts - 2.98%
 Ford Motor Company..........................         465,600          17,576,400
 Genuine Parts Company.......................         685,500          23,221,313
 Goodyear Tire & Rubber Company..............         505,000          31,972,560
                                                -------------       -------------
                                                    1,656,100          72,770,273
                                                -------------       -------------
Banking, Savings & Loans - 4.10%
 The Bank of New York Company, Incorporated..         675,000          29,362,500
 Comerica, Incorporated......................         237,000          16,116,000
 CoreStates Financial Corporation............         374,800          20,145,500
 Norwest Corporation.........................         252,000          14,175,000
 Pacific Century Finance.....................         109,100           5,045,874
 Wachovia Corporation........................         260,000          15,161,120
                                                -------------       -------------
                                                    1,907,900         100,005,994
                                                -------------       -------------
Beverages - 1.16%
 Brown-Forman Corporation (Class B)..........         300,000          14,643,600
 Pepsico, Incorporated.......................         365,000          13,710,130
                                                -------------       -------------
                                                      665,000          28,353,730
                                                -------------       -------------
Chemicals - 2.82%
 E.I. du Pont de Nemours and Company.........         292,000          18,359,500
 The Lubrizol Corporation....................         300,300          12,593,681
 Nalco Chemical Company......................         355,000          13,711,875
 Rohm & Haas.................................         268,000          24,136,616
                                                -------------       -------------
                                                    1,215,300          68,801,672
                                                -------------       -------------
Communications - 1.09%
 AT&T Corporation............................         122,100           4,281,070
 GTE Corporation.............................         509,700          22,363,088
                                                -------------       -------------
                                                      631,800          26,644,158
                                                -------------       -------------
Computers & Office Equipment - 4.68%
 Hewlett-Packard Company.....................         536,000          30,016,000
 International Business Machines Corporation.         302,000          27,236,474
 Pitney Bowes, Inc...........................         371,000          25,784,500
 Xerox Corporation...........................         396,000          31,234,500
                                                -------------       -------------
                                                    1,605,000         114,271,474
                                                -------------       -------------
Containers - .32%
 Temple-Inland, Inc..........................         145,000           7,830,000
                                                -------------       -------------
Cosmetic & Personal Care - .86%
 Kimberly-Clark Corporation..................         422,000          20,994,500
                                                -------------       -------------
Electric Utilities - 1.34%
 NIPSCO Industries, Inc......................         178,000           7,353,537
 SCANA Corporation...........................         579,200          14,371,110
 Teco Energy Inc.............................         428,200          10,945,648
                                                -------------       -------------
                                                    1,185,400          32,670,295
                                                -------------       -------------
Electrical Equipment & Electronics - 4.57%
 AMP, Inc....................................         700,000          29,225,000
 General Electric Company....................         720,000          47,070,000
 Honeywell, Inc..............................         203,000          15,402,624
 Hubbell, Incorporated (Class B).............         431,880          19,002,720
 New England Electric........................          27,200           1,006,400
                                                -------------       -------------
                                                    2,082,080         111,706,744
                                                -------------       -------------
Energy - 4.42%
 Amoco Corporation...........................         332,000          28,863,084
 ENI, SPA - ADR..............................         141,400           8,042,125
 Kerr-McGee Corporation......................         190,000          12,041,250
 Mobil Corporation...........................         300,000          20,962,500
 Occidental Petroleum Corp...................         568,300          14,242,735
 Union Pacific Resources Group, Inc..........         479,100          11,917,613
 Unocal Corporation..........................         304,200          11,806,610
                                                -------------       -------------
                                                    2,315,000         107,875,917
                                                -------------       -------------
Financial Services -1.06%
 American Express Company....................         346,000          25,777,000
                                                -------------       -------------
Foods - 1.93%
 ConAgra, Inc................................         325,100          20,847,038
 CPC International, Inc......................         285,000          26,308,920
                                                -------------       -------------
                                                      610,100          47,155,958
                                                -------------       -------------
Forest Products & Paper - 1.40%
 Westvaco Corporation........................         450,012          14,147,027
 Weyerhaeuser Company........................         386,500          20,098,000
                                                -------------       -------------
                                                      836,512          34,245,027
                                                -------------       -------------
Hardware & Tools - .56%
 The Stanley Works...........................         342,000          13,680,000

Healthcare - 5.73%
 Becton, Dickinson and Company...............         468,000          23,692,500
 Bristol-Myers Squibb Company................         800,000          64,800,000
 Pfizer, Incorporated........................          99,900          11,938,050
 Pharmacia & Upjohn Inc......................         415,000          14,421,250
 Schering-Plough Corp........................         526,000          25,182,250
                                                -------------       -------------
                                                    2,308,900         140,034,050
                                                -------------       -------------
Industrial Distribution - .67%
 W. W. Grainger, Inc.........................         208,000          16,262,896
                                                -------------       -------------
Industrial Transportation - 1.71%
 Burlington Northern.........................         229,200          20,599,350
 Norfolk Southern Corporation................         210,000          21,157,500
                                                -------------       -------------
                                                      439,200          41,756,850
                                                -------------       -------------
Insurance - 4.39%
 Jefferson-Pilot Corporation.................         234,500          16,385,688
 Marsh & McLennan Companies, Inc.............         480,000          34,260,000
 MBIA, Inc...................................         225,500          25,439,106
 SAFECO Corporation..........................         668,000          31,186,916
                                                -------------       -------------
                                                    1,608,000         107,271,710
                                                -------------       -------------
</TABLE>

                                       18
<PAGE>
 
MML Blend Fund

SCHEDULE OF INVESTMENTS (Continued)

June 30, 1997
(Unaudited)

<TABLE> 
<CAPTION> 
                                                        Number        Market
                                                          of           Value
                                                        Shares       (Note 2A)  
                                                        ------       ---------
<S>                                                     <C>          <C> 
EQUITIES (Continued)

Machinery & Components - 1.24%
 Dover Corporation..............................       286,000   $   17,589,000
 Parker-Hannifin Corporation....................       208,750       12,668,411
                                                 -------------   --------------
                                                       494,750       30,257,411
                                                 -------------   --------------
Miscellaneous - 1.57%
 Harsco Corporation.............................       312,100       12,640,050
 Minnesota Mining & Manufacturing Company.......       150,500       15,351,000
 Pall Corp......................................       441,500       10,264,875
                                                 -------------   --------------
                                                       904,100       38,255,925
                                                 -------------   --------------
Photography - .68%
 Eastman Kodak Company..........................       217,300       16,677,775
                                                 -------------   --------------
Publishing & Printing - 1.45%
 McGraw-Hill Companies, Inc.....................       400,000       23,524,800
 R.R. Donnelley & Sons Company..................       326,500       11,958,063
                                                 -------------   --------------
                                                       726,500       35,482,863
                                                 -------------   --------------
Retail - 1.58%
 The May Department Stores Company..............       442,000       20,884,500
 Sears Roebuck and Company......................       330,300       17,753,625
                                                 -------------   --------------
                                                       772,300       38,638,125
                                                 -------------   --------------
Retail - Grocery - 1.68%
 Albertson's, Inc...............................       749,200       27,345,800
 American Stores Company........................       278,100       13,731,188
                                                 -------------   --------------
                                                     1,027,300       41,076,988
                                                 -------------   --------------
Telephone Utilities - 1.95%
 Ameritech Corporation..........................       198,000       13,451,526
 Frontier Corporation...........................       706,000       14,075,522
 Pinnacle West Capital..........................       311,700        9,370,325
 Southern New England
   Telecommunications Corporation...............       278,400       10,822,800
                                                 -------------   --------------
                                                     1,494,100       47,720,173
                                                 -------------   --------------
Tobacco - 1.57%
 Fortune Brands, Inc............................       384,000       14,327,808
 Gallaher Group PLC.............................       384,000        7,079,808
 UST, Inc.......................................       607,600       16,860,900
                                                 -------------   --------------
                                                     1,375,600       38,268,516
                                                 -------------   --------------
Total Equities
 (Cost $809,526,978)............................                  1,485,309,027
                                                                 -------------- 

<CAPTION> 
                                                   Principal
                                                    Amount
                                                   ---------  
<S>                                                <C>           <C> 
BONDS AND NOTES - 19.39%

Asset Backed Securities - 1.15%
Auto Receivables
 Capita Equipment Receivables Trust 1996-1,
  Class A4
  6.280%     6/15/00........................     $   4,000,000        3,996,240
 Chase Manhattan Auto Grantor Trust 1996-B,
  Class A
  6.610%     9/15/02........................         3,763,036        3,777,147
 Daimler-Benz Auto Grantor Trust 1995-A,
  Class A
  5.850%     5/15/02........................         1,001,463        1,000,212
 Ford Credit 1994-B Grantor Trust
  7.300%     10/15/99.......................           498,188          502,388
 Ford Credit Auto Owner Trust 1996-B,
  Class A-4
  6.300%     1/15/01........................         6,000,000        5,988,720
 Ford Credit Auto Loan Master Trust,
  Series 1992-1
  8.450%     7/15/06........................         1,500,000        1,500,375
 Keystone Auto Grantor Trust 1996-B,
  Class A 144A
  6.150%     4/15/03........................         1,850,070        1,847,314
 Nissan Auto Receivables 1994-A Grantor
  Trust, Class A
  6.450%     9/15/99........................         1,296,946        1,298,567
 Railcar Trust No. 1992-1
  7.750%     6/1/04.........................         1,378,152        1,428,968
 World Omni 1995-A Automobile Lease
  Securitization Trust, Class A
  6.050%     11/25/01.......................         2,634,215        2,635,848
 World Omni 1996-A Automobile Lease
  Securitization Trust, Class A1
  6.300%      6/25/02.......................         4,075,779        4,085,967
                                                 -------------   --------------
Total Asset Backed Securities
 (Cost $28,055,028).........................        27,997,849       28,061,746
                                                 -------------   --------------
Corporate Debt - 7.27%
 AirTouch Communications, Inc.
  7.500%     7/15/06........................         4,000,000        4,084,800
 America West Airlines 1996-1, Class A
  6.850%     7/2/09.........................         4,250,000        4,138,438
 American Airlines, Inc.
  9.780%     11/26/11.......................         5,000,000        5,687,500
 AMR Corporation
  9.000%     8/1/12.........................         2,000,000        2,240,280
 Analog Devices, Inc.
  6.625%     3/1/00.........................         1,500,000        1,491,465
 Associates Corporation of North America
  6.750%     8/1/01.........................         4,000,000        4,004,960
 Barrick Gold Corporation
  7.500%     5/1/07.........................         4,250,000        4,348,048
 Bell Atlantic Financial Services, Inc.
  6.610%     2/4/00.........................         1,000,000        1,002,360
 BHP Finance (USA) Limited
  6.420%     3/1/26.........................         4,500,000        4,409,460
 Carlisle Companies Inc.
  7.250%     1/15/07........................         2,250,000        2,245,748
 Champion International Corporation
  6.400%     2/15/26........................         3,500,000        3,331,090
 Charles Schwab Corporation
  6.250%     1/23/03........................         2,500,000        2,406,250
 CITGO Petroleum Corporation
  7.875%     5/15/06........................         1,000,000        1,033,200
 Columbia Gas System, Inc.
  6.610%     11/28/02.......................         3,000,000        2,966,100
 Comcast Cablevision
  8.375%     5/01/07........................         2,500,000        2,644,674
 Commercial Credit Company
  7.750%     3/1/05.........................         2,500,000        2,597,600
 Continental Airlines, Inc. Series 1996-B
  7.820%     10/15/13.......................         1,960,784        2,022,000
 Continental Airlines, Inc. Series 1996-2B
  8.560%     7/2/14.........................         1,701,186        1,835,155
 Corning Glass Works, Inc.
  8.875%     3/15/16........................           500,000          556,970
</TABLE> 

                                       19
<PAGE>
 
MML Blend Fund

SCHEDULE OF INVESTMENTS (CONTINUED)

June 30, 1997
(Unaudited)

<TABLE>
<CAPTION>
                                                                           Market
                                                    Principal               Value
                                                     Amount               (Note 2A)
                                                -----------------     -----------------  
<S>                                             <C>                   <C> 
BONDS AND NOTES (Continued)

Corporate Debt (Continued)
 CSX Corporation
  7.250%     5/1/27.........................    $       4,500,000     $       4,591,170
 Delta Air Lines, Inc.                           
  8.540%     1/2/07.........................            4,226,618             4,495,810
 English China Clays Delaware Inc.                                                         
  7.375%     10/1/02........................            1,000,000             1,017,100
 ERAC USA Finance Company 144A                                          
  6.950%     1/15/06........................            1,500,000             1,467,345
 FBG Finance Ltd. 144A                           
  7.875%     6/1/16.........................            4,000,000             4,016,120
 Fletcher Challenge Ltd.                                                     
  7.750%     6/20/06........................            2,000,000             2,058,840
 Foodbrands America Inc.                                                      
  10.750%    5/15/06........................            3,500,000             4,103,120
 Foster Wheeler Corporation                                              
  6.750%     11/15/05.......................            2,000,000             1,937,060
 General American Transportation Corporation                           
  6.750%     3/1/06.........................            3,000,000             2,903,160
 General Electric Capital Corporation                                  
  8.750%     5/21/07........................            1,500,000             1,689,060
 General Mills                                   
  8.900%     6/15/06........................            2,250,000             2,506,612
 General Motors Corporation                                            
  9.125%     7/15/01........................            1,500,000             1,621,440
 Goldman Sachs Group, L.P. 144A                                        
  6.200%     2/15/01........................            4,000,000             3,936,160
 GTE Corporation                                 
  9.100%     6/1/03.........................            1,000,000             1,106,110
 Hilton Hotels Corporation                                             
  7.375%     6/1/02.........................            1,750,000             1,762,548
 Leucadia National Corporation                                         
  7.750%     8/15/13........................            3,000,000             2,924,340
 Lockheed Martin Corporation                     
  7.700%     6/15/08........................            4,000,000             4,172,160
 M.F.S. Communications Corporation                                     
  0.000%     1/15/04........................            1,750,000             1,628,900
 Mapco, Inc.                                                           
  7.250%     3/1/09.........................            3,750,000             3,753,450
 McDonnell Douglas Corporation                                         
  9.250%     4/1/02.........................            2,200,000             2,418,987
 Metlife Capital Equipment Corporation           
  6.850%     5/20/08........................            1,500,000             1,492,605
 Millifpore Corporation                                                
  7.500%     4/1/07 ........................            4,250,000             4,305,930
 Mobil Corporation                                                     
  8.625%     8/18/21........................            4,500,000             5,181,030
 Newmont Mining Corporation                                            
  8.625%     4/1/02 ........................            5,000,000             5,326,900
 News America Holdings Incorporated              
  9.250%     2/1/13.........................            4,000,000             4,459,880
 Norfolk Southern Corporation                                          
  7.050%     5/1/37.........................            6,000,000             6,089,640
 North Finance (Bermuda) Limited 144A                                  
  7.000%     9/15/05........................            4,000,000             3,940,000
 Petro Geo-Services                                                    
  7.500%     3/31/07........................              750,000               755,693
 Ralston Purina Company                          
  7.750%     10/1/15........................            2,000,000             2,027,600
 Rite Aid Corporation                                                  
  6.700%     12/15/01.......................            2,000,000             1,984,820
 Rolls-Royce Capital Inc.                                              
  7.125%     7/29/03........................            2,000,000             2,008,060
 Scholastic Corporation                          
  7.000%     12/15/03.......................            4,000,000             3,968,840
 TCI Communications, Inc.                        
  7.550%     9/2/03.........................            3,000,000             2,990,370
 Thomas & Betts Corporation                                            
  8.250%     1/15/04 .......................            1,000,000             1,056,330
 Time Warner, Inc.                                                     
  7.750%     6/15/05........................            3,000,000             3,048,750
 Time Warner, Inc.                               
  6.100%     12/30/01.......................            4,750,000             4,549,930
 The Toro Company                                                      
  11.000%    8/1/17.........................            2,000,000             2,126,480
 US Air, Inc.                                                          
  7.500%     10/15/09.......................              962,159               968,173
 US West Capital Funding Inc.                                          
  6.850%     1/15/02........................            4,250,000             4,245,452
 Valassis Communications, Inc.                   
  9.550%     12/1/03........................            2,000,000             2,130,340
 Worldcom Inc.                                                         
  7.750%     4/1/07.........................            2,500,000             2,556,700
 W.R. Grace & Co.                                                      
  8.000%     8/15/04........................            5,000,000             5,233,900
                                                -----------------     -----------------  
Total Corporate Debt                            
 (Cost $175,107,993)                                  172,800,747           177,603,013
                                                -----------------     -----------------  

U.S. Government Agency Obligations - 4.48%      
                                                
Federal Home Loan Mortgage                      
 Corporation (FHLMC) - 1.00%                    
                                                
Collateralized Mortgage Obligations - .97%      
 FHLMC Series 1322 Class G                       
  7.500%     2/15/07........................            5,000,000             5,101,550
 FHLMC Series 1460 Class H                       
  7.000%     5/15/07........................            1,789,000             1,795,709
 FHLMC Series 1080 Class D                       
  7.000%     7/15/20........................            3,921,662             3,960,878
 FHLMC Series 1490 Class PG                                          
  6.300%     5/15/07........................            5,000,000             4,932,800
 FHLMC Series 1625 Class EA                                          
  5.750%     3/15/07........................            5,000,000             4,920,300
 FHLMC Series 1625 Class D                                           
  5.250%     7/15/04........................            3,100,000             3,074,797
                                                -----------------     -----------------  
                                                       23,810,662            23,786,034
Pass-Through Securities - .02%                  
 FHLMC                                          
  9.000%     3/1/17 ........................              488,886               520,224
                                                -----------------     -----------------  
                                                       24,299,548            24,306,258
                                                -----------------     -----------------  
</TABLE> 

                                      20
<PAGE>
 
MML Blend Fund

SCHEDULE OF INVESTMENTS (CONTINUED)

June 30, 1997
(Unaudited)

<TABLE>
<CAPTION>
                                                                           Market
                                                    Principal               Value
                                                     Amount               (Note 2A)
                                                -----------------     -----------------  
<S>                                             <C>                   <C>
BONDS AND NOTES (Continued)

Federal National Mortgage
 Association (FNMA) - 1.27%

Collateralized Mortgage Obligations - .78%
 FNMA Series 1993-134 Class GA
  6.500%     2/25/07........................    $       5,000,000     $       4,954,650
FNMA Series 1993-71 Class PG
  6.250%     7/25/07........................            8,000,000             7,870,000
FNMA Series 1993-175 Class PL
  5.000%     10/25/02.......................              966,932               962,397
FNMA Series 1993-191 Class PD
  5.400%     3/25/04........................            1,500,000             1,488,750
FNMA Series 1996-54 Class C
  6.000%     9/25/08........................            4,000,000             3,835,000
                                                -----------------     -----------------
                                                       19,466,932            19,110,797

Pass-Through Securities - .49%
 FNMA
  8.000%     5/1/13 ........................            2,102,250             2,139,628
 FNMA
  6.500%     6/25/08 .......................            5,000,000             4,885,900
 FNMA
  6.250%     3/25/08 .......................            5,000,000             4,915,600
                                                -----------------     -----------------
                                                       12,102,250            11,941,128
                                                -----------------     -----------------
                                                       31,569,182            31,051,925
                                                -----------------     -----------------

Government National Mortgage
 Association (GNMA) - 1.45%

Collateralized Mortgage Obligations - .07%
 JHM Acceptance Corporation, Series E,
  Class 5
  8.960%     4/1/19.........................            1,603,881             1,676,553
                                                -----------------     -----------------

Pass-Through Securities - 1.38%
 GNMA
  7.500%     9/15/16 - 10/15/17 ............            3,905,468             3,959,130
 GNMA
  8.000%     1/15/04 - 5/15/08 .............            6,749,401             7,263,693
 GNMA
  9.000%     8/15/08 - 9/15/09 .............            1,965,318             1,816,146
 GNMA - ARMS
  6.000%     7/20/25 - 5/20/27 .............           20,302,369            20,669,673
                                                -----------------     -----------------
                                                       32,922,556            33,708,642
                                                -----------------     -----------------
                                                       34,526,437            35,385,195
                                                -----------------     -----------------

U.S. Government Guaranteed Notes - .77%
 1994-A Abilene, TX
  5.780%     8/1/98 ........................               70,000                69,737
 1994-A Bakersfield, CA
  5.780%     8/1/98 ........................              245,000               244,081
 1994-A Barberton, OH
  5.780%     8/1/98 ........................               75,000                74,719
 1994-A Buffalo, NY
  5.780%     8/1/98 ........................              375,000               373,594
 1991-A Caguas, PR
  8.740%     8/1/01 ........................              280,000               299,250
 1991-A Council Bluffs, IA
  8.740%     8/1/01 ........................              155,000               165,656
 1994-A Cumberland, MD
  5.780%     8/1/98 ........................               55,000                54,794
 1994-A Elizabeth, NJ
  5.780%     8/1/98 ........................               75,000                74,719
 1994-A Erie, PA
  5.780%     8/1/98 ........................               70,000                69,737
 1994-A Euclid, OH
  5.780%     8/1/98 ........................              105,000               104,606
 1994-A Fairfax County, VA
  5.780%     8/1/98 ........................              110,000               109,588
 1991-A Fairfax County, VA
  8.740%     8/1/01 ........................               85,000                90,844
 1991-A Fajardo, PR
  8.740%     8/1/01 ........................              210,000               224,438
 1994-A Fort Myers, FL
  5.780%     8/1/98 ........................              135,000               134,494
 1991-A Gasden, AL
  8.740%     8/1/01 ........................              100,000               106,875
 1994-A Lawrence, MA
  5.780%     8/1/98 ........................               40,000                39,850
 1991-A Lorain, OH
  8.740%     8/1/01 ........................               30,000                32,062
 1994-A Los Angeles County, CA                                         
  5.780%     8/1/98 ........................              175,000               174,344
 1994-A Mayaguez, PR                                                   
  5.780%     8/1/98 ........................               65,000                64,756
 1991-A Mayaguez, PR
  8.740%     8/1/01 ........................              150,000               160,312
 1994-A Mobile, AL                                                 
  5.780%     8/1/98 ........................              205,000               204,231
 1994-A Montgomery County, PA                                      
  5.780%     8/1/98 ........................              230,000               229,137
 1994-A New Orleans, LA                                            
  5.780%     8/1/98.........................              175,000               174,344
 1994-A Ocean Shores, WA
  5.780%     8/1/98 ........................              110,000               109,587
 1994-A Pasadena, CA                                                 
  5.780%     8/1/98 ........................              140,000               139,475
 1994-A Providence, RI                                               
  5.780%     8/1/98 ........................               50,000                49,812
 1994-A Reading, PA                                                  
  5.780%     8/1/98 ........................               65,000                64,756
 1994-A Roanoke, VA                                                  
  5.780%     8/1/98 ........................              210,000               209,213
 1994-A Rochester, NY
  5.780%     8/1/98 ........................              165,000               164,381
 1991-A Rochester, NY                                              
  8.650%     8/1/00 ........................            4,295,000             4,532,555
 1994-A Sacramento, CA                                             
  5.780%     8/1/98 ........................              300,000               298,875
 1994-A Syracuse, NY                                               
  5.780%     8/1/98 ........................               50,000                49,813
 1994-A Tacoma, WA                                                 
  5.780%     8/1/98 ........................              155,000               154,419
 1994-A Trenton, NJ                                    
  5.780%     8/1/98 ........................              130,000               129,513
 1994-A Virginia Beach, VA                                                      
  5.780%     8/1/98 ........................              260,000               259,024
 1994-A Waterford Township, MI                                                  
  5.780%     8/1/98 ........................               55,000                54,794
 1994-A West Palm Beach, FL                                                     
  5.780%     8/1/98 ........................              105,000               104,606
 U.S. Department of Housing and Urban
  Development, Series 1995-A
  8.240%     8/1/02.........................            8,475,000             9,084,522
                                                -----------------     -----------------
                                                       17,780,000            18,681,513
                                                -----------------     -----------------

 Total U.S. Government Agency Obligations                                
    (Cost $107,071,795)                               108,175,167           109,424,891
                                                -----------------     -----------------
</TABLE> 
 

                                      21
<PAGE>
 
MML Blend Fund

SCHEDULE OF INVESTMENTS (CONTINUED)

June 30, 1997
(Unaudited)

<TABLE>
<CAPTION>
                                                                           Market
                                                    Principal               Value
                                                     Amount               (Note 2A)
                                                -----------------     -----------------  
<S>                                             <C>                   <C>
BONDS AND NOTES (Continued)

U.S. Treasury Obligations - 6.48%

U.S. Treasury Bonds - 2.82%
 U.S. Treasury Bond
  5.8750%    5/15/16........................    $      26,250,000     $      27,373,762
 U.S. Treasury Bond
  8.750%     5/15/17........................           34,500,000            41,507,640
                                                -----------------     -----------------
                                                       60,750,000            68,881,402
                                                -----------------     -----------------

U.S. Treasury Notes - 3.16%
 U.S. Treasury Note
  6.125%     5/15/98........................           10,000,000            10,029,700
 U.S. Treasury Note
  6.375%     1/15/99........................           11,000,000            11,063,580
 U.S. Treasury Note
  5.875%     1/31/99........................           13,000,000            12,973,610
 U.S. Treasury Note
  6.375%     5/15/99........................            6,000,000             6,030,000
 U.S. Treasury Note
  6.500%     5/31/01........................            1,500,000             1,508,205
 U.S. Treasury Note
  7.250%     5/15/04........................           34,000,000            35,445,000
                                                -----------------     -----------------
                                                       75,500,000            77,050,095
                                                -----------------     -----------------

U.S. Treasury Strips - .51%
 U.S. Treasury Strip - Principal only
  0.000%     2/15/99........................            9,750,000             8,855,243
 U.S. Treasury Strip - Principal only
  0.000%     2/15/10........................            2,500,000             1,070,850
U.S. Treasury Strip - Principal only
  0.000%     2/15/17........................            9,500,000             2,450,620
                                                -----------------     -----------------
                                                       21,750,000            12,376,713
                                                -----------------     -----------------

Total U.S. Treasury Obligations
   (Cost $158,624,313)......................          158,000,000           158,308,210
                                                -----------------     -----------------

Total Bonds and Notes
   (Cost $468,859,129)......................    $     466,973,763           473,397,860
                                                =================     -----------------


SHORT-TERM INVESTMENTS - 19.81%

Commercial Paper
 Aristar, Inc.
  5.670%     8/14/97........................    $       4,980,000             4,943,542
 Baltimore Gas and Electric
  5.670%     9/23/97........................           10,000,000             9,864,236
 Baxter International Inc.
  5.750%     8/25/97........................            2,190,000             2,170,761
 Central and South West Corporation
  5.800%     8/20/97........................           11,815,000            11,719,824
 Comdisco, Inc.
  5.880%     8/1/97.........................           17,100,000            17,015,393
 Comdisco, Inc.
  5.800%     8/18/97........................           12,225,000            12,129,686
 Comdisco, Inc.
  5.810%     8/15/97........................            6,685,000             6,636,137
 Countrywide Home Loans
  5.560%     8/28/97........................           10,000,000             9,902,651
 Countrywide Home Loans
  5.590%     9/16/97........................            9,170,000             9,055,757
 Crown Cork & Seal Company, Inc.
  5.780%     7/18/97........................           14,525,000            14,485,590
 Crown Cork & Seal Company, Inc.
  5.720%     7/28/97........................           10,000,000             9,957,288
 Crown Cork & Seal Company, Inc.
  5.760%     7/31/97........................            4,050,000             4,030,139
 Crown Cork & Seal Company, Inc.
  5.800%     8/08/97........................            6,330,000             6,291,246
 Dominion Resources, Inc.
  5.840%     7/11/97........................            8,000,000             7,987,119
 Dominion Resources, Inc.
  5.770%     8/4/97.........................           16,000,000            15,913,175
 Dominion Resources, Inc.
  5.800%     8/13/97........................            8,855,000             8,792,669
 Enron Corporation
  5.750%     7/31/97........................            6,690,000             6,657,944
 Finova Capital Corporation
  5.610%     9/9/97.........................            6,525,000             6,451,005
 Harris Corporation
  5.800%     8/6/97.........................           11,000,000            10,935,743
 Harris Corporation
  5.720%     7/29/97........................            1,240,000             1,234,508
 Illinois Power Company
  5.790%     7/8/97.........................            2,780,000             2,776,894
 Illinois Power Company
  5.800%     8/19/97........................           10,560,000            10,476,635
 Kerr-Mcgee Credit Cop
  5.750%     7/29/97........................           17,275,000            17,197,742
 Mattel, Inc.
  5.780%     8/22/97........................           11,625,000            11,527,665
 Mattel, Inc.
  5.780%     7/25/97........................            6,545,000             6,519,780
 Ohio Power
  5.85%      7/02/97........................           11,485,000            11,483,134
 ORIX Credit Alliance, Inc.
  5.870%     7/22/97........................           12,000,000            11,960,136
 ORIX Credit Alliance, Inc.
  5.820%     7/9/97.........................            5,825,000             5,817,438
 ORIX Credit Alliance, Inc.
  5.900%     7/28/97........................            9,142,000             9,102,953
 ORIX Credit Alliance, Inc.
  5.850%     7/24/97........................           10,000,000             9,962,403
 Praxair Inc.
  5.790%     7/3/97.........................            4,545,000             4,543,514
 Praxair Inc.
  5.790%     7/21/97........................           13,870,000            13,826,117
 Praxair Inc.
  5.770%     7/15/97........................           10,000,000             9,977,853
 Praxair Inc.
  5.740%     8/5/97.........................            6,000,000             5,966,483
 Public Service Company of Colorado
  5.850%     7/23/97........................           15,025,000            14,971,838
 Public Service Company of Colorado
  5.800%     8/19/97........................            1,315,000             1,304,534
 Public Service Company of Colorado
  5.820%     8/26/97........................           12,000,000            11,890,847
 Public Service Company of Colorado
  5.840%     9/26/97........................           11,300,000            11,141,172
 Public Service Electric and Gas Company
  5.800%     8/7/97.........................           12,070,000            11,996,346
 Rite Aid Corporation
  5.770%     7/8/97.........................            6,075,000             6,068,213
</TABLE>

 


                                      22
<PAGE>
 
MML Blend Fund

SCHEDULE OF INVESTMENTS (CONTINUED)

June 30, 1997
(Unaudited)

<TABLE>
<CAPTION>
                                                                           Market
                                                    Principal               Value
                                                     Amount               (Note 2A)
                                                -----------------     -----------------  
<S>                                             <C>                   <C>
SHORT-TERM INVESTMENTS (Continued)

Commercial Paper (Continued)
 Rite Aid Corporation
  5.800%     7/14/97.................           $       8,830,000     $       8,811,841
 Rite Aid Corporation
  5.780%     7/17/97.................                  14,965,000            14,925,860
 Rite Aid Corporation
  5.810%     7/25/97.....................               4,850,000             4,830,666
 Textron Financial Corporation                                        
  5.820%     7/2/97.....................                2,380,000             2,379,643
 Textron Financial Corporation                                        
  5.820%     7/30/97.....................              13,430,000            13,367,036
 Timken Company                                                       
  5.800%     7/15/97.....................               1,725,000             1,721,180
 Union Camp Corp.                                                     
  5.550%     7/7/97.....................               11,400,000            11,389,083
 Union Camp Corp.                                                     
  5.670%     7/1/97.....................                6,075,000             6,075,000
 Union Camp Corp.
  5.700%     7/10/97.....................              10,025,000            10,010,120
 Union Camp Corp.                                                    
  5.800%     8/11/97.....................               7,000,000             6,953,788
 Whirlpool Financial Corporation                                     
  5.800%     7/9/97.....................                7,070,000             7,060,822
 Whirlpool Financial Corporation                                     
  5.750%     7/16/97.....................              10,165,000            10,140,478
 Whirlpool Financial Corporation                                     
  5.800%     8/12/97.....................              11,575,000            11,496,721
 Whirlpool Financial Corporation
  5.800%     8/21/97.....................              10,000,000             9,917,833
                                                -----------------     -----------------

Total Short-Term Investments
   (Cost $483,786,841)                          $     486,307,000           483,766,181
                                                =================     -----------------

Total Investments -
   (Cost $1,762,172,948) (a)              100.02%                     $   2,442,473,068
                                          =======                     =================
</TABLE> 


Table of Open Forward Commitment Contracts
<TABLE> 
<CAPTION> 
          Forward                    Aggregate        Expiration
         Commitment                Face Value of         of             Unrealized
          Contracts                  Contracts        Contracts        Depreciation
         ----------                -------------      ----------       ------------
<S>                                <C>                <C>              <C> 
United States of America
 5.875% due 11/15/99                $4,978,906        August 1997      $     (12,756)
                                                                       --------------     

Total Forward Commitment
 Contracts                                                             $     (12,756)
                                                                       ==============

(a) Federal Income Tax Information: At
    June 30, 1997 the net unrealized
    appreciation on investments and forward
    commitment contracts based on cost of
    $1,767,362,414 for federal income tax
    purposes is as follows:

    Aggregate gross unrealized appreciation for
    all investments and forward commitments in
    which there is an excess of market value
    over tax cost .................................................... $ 689,786,175

    Aggregate gross unrealized depreciation for
    all investments and forward commitments in
    which there is an excess of tax cost over
    market value .....................................................    (9,709,371)
                                                                       --------------
       Net unrealized appreciation ................................... $ 680,076,804
                                                                       ==============
</TABLE> 




                      See Notes to Financial Statements.
                                      23
<PAGE>
 
MML SERIES INVESTMENT FUND
NOTES TO FINANCIAL STATEMENTS

1. HISTORY

MML Series Investment Fund (the "MML Trust") is registered under the Investment
Company Act of 1940 as a no-load, registered open end, diversified management
investment company. MML Equity Fund, MML Money Market Fund, MML Managed Bond
Fund and MML Blend Fund (the "Funds") are four series of shares of the MML
Trust. The MML Trust is organized as a business trust under the laws of the
Commonwealth of Massachusetts pursuant to an Agreement and Declaration of Trust.

The MML Trust was established by Massachusetts Mutual Life Insurance Company
("MassMutual") for the purpose of providing vehicles for the investment of
assets of various separate investment accounts established by MassMutual and by
life insurance companies which are subsidiaries of MassMutual. Shares of the MML
Trust are not offered to the general public.

2. SIGNIFICANT ACCOUNTING POLICIES

The following is a summary of significant accounting policies followed
consistently by each Fund in the preparation of the financial statements in
conformity with generally accepted accounting principles.

   A. Investment Valuation

   Equity securities are valued on the basis of valuations furnished by a
   pricing service, authorized by the Board of Trustees, which provides the last
   reported sale price for securities listed on a national securities exchange,
   or on the NASDAQ national market system. If securities are unlisted, or there
   is no reported sale price, the bid price of the prior trade date will be
   used. Long-term bonds are valued on the basis of valuations furnished by a
   pricing service, authorized by the Board of Trustees, which determines
   valuations taking into account appropriate factors such as institutional-
   size, trading in similar groups of securities, yield, quality, coupon rate,
   maturity, type of issue, trading characteristics and other market data.

   For MML Equity Fund, MML Managed Bond Fund, and MML Blend Fund, short-term
   securities with more than sixty days to maturity from the date of purchase
   are valued at market and short-term securities having a maturity from the
   date of purchase of sixty days or less are valued at amortized cost. MML
   Money Market Fund's portfolio securities are valued at amortized cost in
   accordance with a rule of the Securities and Exchange Commission pursuant to
   which MML Money Market Fund must adhere to certain conditions. It is the
   intention of MML Money Market Fund to maintain a per share net asset value of
   $1.00.

   B. Accounting For Investments

   Investment transactions are accounted for on trade date. Dividend income is
   recorded on the ex-dividend date. Interest income is recorded on the accrual
   basis. Premiums and discounts on short-term securities are amortized in
   determining interest income.

   The cost basis of long-term bonds is not adjusted for amortization of premium
   or accrual of discount since MML Managed Bond Fund and MML Blend Fund do not
   generally intend to hold such investments until maturity; however, the MML
   Trust has elected to accrue for financial reporting purposes, certain
   discounts which are required to be accrued for federal income tax purposes.

   Realized gains and losses on investment transactions and unrealized
   appreciation and depreciation of investments are reported for financial
   statement and federal income tax purposes on the identified cost method.

   C. Federal Income Tax

   The MML Trust has established a policy for each of the Funds to comply with
   the provisions of the Internal Revenue Code applicable to regulated
   investment companies. As a result, the Funds will not be subject to federal
   income tax on any net investment income and any net capital gains to the
   extent they are distributed or are deemed to have been distributed to
   shareholders. Distributions are determined in accordance with income tax
   regulations which may differ from generally accepted accounting principles.
   These differences are primarily due to the deferral of wash sale losses, and
   paydowns on certain mortgage-backed securities. As a result, net investment
   income (loss) and net realized gain (loss) on investment transactions for a
   reporting period may differ significantly from distributions during such
   period. Accordingly, the Funds may periodically make reclassifications among
   certain of their capital accounts without impacting the net asset value of
   the Funds.

                                       24
<PAGE>
 
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

   D. Forward Commitments

   Each Fund may purchase or sell securities on a "when issued" or delayed
   delivery or on a forward commitment basis. The Funds use forward commitments
   to manage interest rate exposure or as a temporary substitute for purchasing
   or selling particular debt securities. The Funds may also use forward
   commitments to take delivery of the underlying security rather than closing
   out the forward contract. Forward commitments are not used for purposes of
   trading. Settlement for securities purchased on a forward commitment basis
   can take place a month or more after the date of the transaction. The Fund
   generally does not take delivery on these forward commitments, but such
   commitments are instead settled with offsetting transactions. When a forward
   commitment contract is closed, the Funds record a realized gain or loss.
   Forward commitments involve a risk of loss if the value of the security to be
   purchased declines prior to the settlement date. The Funds could also be
   exposed to loss if they cannot close out their forward commitments because of
   an illiquid secondary market, or the inability of counterparties to perform.
   The Fund monitors exposure to ensure counterparties are credit worthy and
   concentration of exposure is minimized. The Funds instruct the custodian to
   segregate liquid high quality assets in a separate account with a current
   market value at least equal to the amount of its forward purchase
   commitments. The price of the underlying security and the date when the
   securities will be delivered and paid for are fixed at the time the
   transaction is negotiated. The value of the forward commitment is determined
   by management using a commonly accepted pricing model and fluctuates based
   upon changes in the value of the underlying security and market repo rates.
   Such rates equate the counterparty's cost to purchase and finance the
   underlying security to the earnings received on the security and forward
   delivery proceeds. The Funds record on a daily basis the unrealized
   appreciation/depreciation based upon changes in the value of the forward
   commitment. At June 30, 1997, the cost (value) of forward commitments to
   purchase securities amounted to $4,978,906 ($4,966,150) for the MML Blend
   Fund.

   E. 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 revenues and expenses during the reporting period.
   Actual results could differ from those estimates.

3. CAPITAL LOSS CARRYFORWARD

The accumulated net realized loss on investments for the MML Money Market Fund
results in a capital loss carryforward of $9,702 which is available for federal
income tax purposes to offset future capital gains. Of the total carryforward,
$453 expires December 31, 1997, $1,639 expires December 31, 1998, $1,204 expires
December 31, 2000, $201 expires December 31, 2001, $5,364 expires December 31,
2002 and $841 expires December 31, 2003.

The accumulated net realized loss on investments for the MML Managed Bond Fund
results in a capital loss carryforward of $1,163,656 which is available for
federal income tax purposes to offset future capital gains.  Of the total
carryforward, $840,829 expires December 31, 2002 and $322,826 expires 
December 31, 2004.

4. INVESTMENT MANAGEMENT FEE

MassMutual provides all investment advisory, management and administrative
services needed by the Funds. For acting as such, MassMutual receives a
quarterly fee from each Fund at the annual rate of .50% of the first
$100,000,000 of the average daily net asset value of each Fund, .45% of the next
$200,000,000, .40% of the next $200,000,000, and .35% of any excess over
$500,000,000.

MassMutual has entered into investment sub-advisory agreements with David L.
Babson and Company, Inc. ("Babson"), a wholly-owned subsidiary of DLB
Acquisition Corporation which is a controlled subsidiary of MassMutual. The
agreements provide that Babson manage the assets of MML Equity Fund and the
assets of the Equity Sector of the MML Blend Fund.  MassMutual pays Babson a
quarterly fee equal to an annual rate of .13% of the average daily net asset
value of MML Equity Fund and the Equity Sector of MML Blend Fund.

MassMutual has agreed, at least through April 30, 1998, to bear the expenses of
the Funds to the extent that the aggregate expenses (excluding each Fund's
management fee, interest, taxes, brokerage commissions and extraordinary
expenses) incurred during each Fund's fiscal year exceed .11% of the average
daily net asset value of each Fund for such year. For the period ended 
June 30, 1997, MassMutual was not required to reimburse the Funds for any
expenses.

                                       25
<PAGE>
 
NOTES TO FINANCIAL STATEMENTS (CONTINUED)

5. PURCHASES AND SALES OF INVESTMENTS AND FORWARD COMMITMENTS

<TABLE>
<CAPTION>
                                                                                                                   Proceeds     
For the Six Months                                                                                Acquisition     from Sales    
Ended June 30, 1997                                                                                   Cost      and Maturities  
- -------------------                                                                             --------------  --------------  
Investments
- -----------
<S>                                                                                             <C>             <C> 
MML EQUITY FUND  
 Equities....................................................................................   $  266,200,151  $  136,396,893
 Short-term investments......................................................................    1,991,750,279   1,973,499,559

MML MONEY MARKET FUND
 Short-term investments......................................................................      402,081,654     407,299,078

MML MANAGED BOND FUND
 Bonds and notes.............................................................................       24,498,140      16,755,511
 U.S. Government investments - long-term.....................................................       20,690,123      24,391,520
 Short-term investments......................................................................      171,605,520     172,640,185

MML BLEND FUND
 Equities....................................................................................      142,376,113     120,711,228
 Bonds and notes.............................................................................       56,687,758      35,769,087
 U.S. Government investments - long-term.....................................................       94,177,762      51,116,861
 Short-term investments......................................................................    1,302,378,210   1,324,695,071

<CAPTION> 
                                                                                                                     Cost    
Forward Commitments                                                                                              of Contracts
- -------------------                                                                                             --------------   
<S>                                                                                                             <C> 
MML BLEND FUND
 U.S. Treasury and GNMA Forward Commitment Contracts:
  Contracts opened...........................................................................                   $    4,978,906
  Contracts closed...........................................................................                        4,981,405
  Outstanding at June 30, 1997...............................................................                        4,978,906
</TABLE>

6. NET INCREASE FROM CAPITAL SHARE TRANSACTIONS

<TABLE>
<CAPTION>
                                                                                   MML               MML
                                                                    MML           Money            Managed           MML
For the Six Months                                                Equity          Market            Bond            Blend
Ended June 30, 1997                                                Fund            Fund             Fund             Fund
- -------------------                                          --------------   --------------   --------------   --------------
<S>                                                          <C>              <C>              <C>              <C>
Shares
 Reinvestment of dividends.................................       2,662,123        3,539,412          496,773        4,155,800
 Sales of shares...........................................       4,778,755       62,595,766        1,081,012        3,482,552
 Redemptions of shares.....................................      (1,156,037)     (67,440,633)      (1,154,759)      (2,222,248)
                                                             --------------   --------------   --------------   --------------
 Net increase (decrease)...................................       6,284,841       (1,305,456)         423,026        5,416,104
                                                             ==============   ==============   ==============   ==============
Amount
 Reinvestment of dividends.................................  $   79,295,107   $    3,539,412   $    5,912,084   $   91,314,784
 Sales of shares...........................................     151,127,198       62,595,766       12,980,305       79,509,326
 Redemptions of shares.....................................     (36,297,106)     (67,440,633)     (13,897,589)     (50,635,400)
                                                             --------------   --------------   --------------   --------------
 Net increase (decrease)...................................  $  194,125,198   $   (1,305,456)  $    4,994,800   $  120,188,711
                                                             ==============   ==============   ==============   ==============

<CAPTION> 
                                                                                   MML              MML
                                                                   MML            Money            Managed           MML
For the Year Ended                                                Equity          Market            Bond            Blend
December 31, 1996                                                  Fund            Fund             Fund             Fund  
- -----------------                                            --------------   --------------   --------------   -------------- 
<S>                                                          <C>              <C>              <C>              <C> 
Shares
 Reinvestment of dividends.................................       1,828,658        6,040,304          891,160        5,306,755
 Sales of shares...........................................      10,091,590      124,468,969        2,922,396        7,200,298
 Redemptions of shares.....................................      (2,955,578)     (94,198,432)      (1,491,952)      (6,061,613)
                                                             --------------   --------------   --------------   --------------
 Net increase..............................................       8,964,670       36,310,841        2,321,604        6,445,440
                                                             ==============   ==============   ==============   ==============
Amount
 Reinvestment of dividends.................................  $   47,407,259   $    6,040,304   $   10,670,172   $  110,096,240
 Sales of shares...........................................     284,667,043      124,468,969       35,191,792      154,685,163
 Redemptions of shares.....................................     (83,541,731)     (94,198,432)     (18,019,376)    (131,731,229)
                                                             --------------   --------------   --------------   --------------
 Net increase..............................................  $  248,532,571   $   36,310,841   $   27,842,590   $  133,050,174
                                                             ==============   ==============   ==============   ==============
</TABLE>

                                       26


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