MASSMUTUAL INSTITUTIONAL FUNDS
N-30D, 1997-03-03
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<PAGE>
 
MassMutual
Institutional Funds



 . MassMutual Prime Fund

 . MassMutual Short-Term Bond Fund

 . MassMutual Core Bond Fund

 . MassMutual Balanced Fund

 . MassMutual Value Equity Fund

 . MassMutual Small Cap Value Equity Fund

 . MassMutual International Equity Fund





ANNUAL REPORT - December 31, 1996


<PAGE>
 
Table of Contents

Letter to Shareholders..................................................    1

MassMutual Prime Fund
   Portfolio Manager Report.............................................    3
   Portfolio of Investments.............................................    4
   Financial Statements.................................................    6

MassMutual Short-Term Bond Fund
   Portfolio Manager Report.............................................   10
   Portfolio of Investments.............................................   12
   Financial Statements.................................................   14

MassMutual Core Bond Fund
   Portfolio Manager Report.............................................   19
   Portfolio of Investments.............................................   21
   Financial Statements.................................................   24

MassMutual Balanced Fund
   Portfolio Manager Report.............................................   29
   Portfolio of Investments.............................................   31
   Financial Statements.................................................   35

MassMutual Value Equity Fund
   Portfolio Manager Report.............................................   40
   Portfolio of Investments.............................................   42
   Financial Statements.................................................   44

MassMutual Small Cap Value Equity Fund
   Portfolio Manager Report.............................................   49
   Portfolio of Investments.............................................   51
   Financial Statements.................................................   53

MassMutual International Equity Fund
   Portfolio Manager Report.............................................   58
   Portfolio of Investments.............................................   60
   Financial Statements.................................................   62

Notes to Financial Statements...........................................   67

Report of Independent Accountants/1/....................................   75







/1/The Report of Independent Accountants extends to the respective Portfolios of
Investments and Financial Statements for each Fund, and the combined Notes to
Financial Statements as listed above.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Institutional Funds - Letter to Shareholders
- --------------------------------------------------------------------------------


                                                                January 31, 1997
To Our Shareholders

[PHOTO OF STUART H. REESE APPEARS HERE]

Stuart H. Reese

"The domestic and international stock and bond markets required selectivity
during 1996."

Another Year of Solid Economic Growth with Low Inflation

Though figures released throughout the year were often contradictory, 1996
closed as the sixth consecutive year of the current U.S. economic expansion.
Growth during the year was driven by consumption and household sales, and by
capital investment by businesses; it was slowed only by relatively weak foreign
trade.

Even with continued growth, however, inflation has remained subdued. In
addition, because prices were stronger during 1996 than they had been in 1995,
the Federal Reserve stopped lowering interest rates after January. The
achievement of an "orchestrated economy" -- growth without inflationary
pressures -- meant the Federal Reserve did not have to intervene again during
the year. As a consequence, interest rates rose only slightly.

A Banner Year for Stocks

More efficient and competitive every year, corporate America enjoyed another
period of profitability. The stock market, reflecting this plus the favorable
economic environment and tremendous demand for stocks from investors, climbed to
new record highs throughout the year. While larger stocks gained most over the
course of the year, nearly all sectors of the market outperformed their
long-term averages.

Underlying the market's tremendous positives, it is important to recognize that
an ongoing trend toward more selective markets continued over the year. So,
while market sectors were generally up, there was often disparity between how
well the best and weakest stocks within an industry performed, and expert stock
picking was the identifying trademark of the year's real winners.

Volatility Limits the U.S. Bond Market

The bond market, on the other hand, had a difficult year. In contrast to 1995,
when declining interest rates spurred a broad bond rally, 1996's increase in
rates hurt bond prices. Especially in Treasuries, which tend to be most
sensitive to changes in rates, price performance eroded returns. After its
strong run in 1995, the bond market was also subject to changing investor
emotions throughout the past year.

Volatility was the rule in the market during 1996, with the release of changing
economic data alternately sending investors chasing and then running from the
market. In this climate, the best performers were shorter-term securities, which
generally have less price sensitivity than their longer counterparts.

Japan Overshadows Strong Foreign Markets

Over the course of the past year, there were numerous success stories among the
world's stock and bond markets, with many developed and developing markets
turning in performance that bettered that of the U.S., even when translated into
dollar terms. However, here again, selectivity was of the utmost importance.
Weakness in the economically-troubled Japanese market -- which after the U.S. is
the second largest world securities market -- showed up in many global
performance measures, taking the shine off of what was a fairly good year in
most regions.

While American foreign trade was off during the year due to slowness in certain
economies and a relatively strong dollar, the long-term trend is for growth to
pick up overseas, and in many areas, to continue to surpass the domestic
economic growth rate. With this view, we believe opportunities in the
international arena abound.




                                                                     (Continued)


                                                                               1
<PAGE>
 
- --------------------------------------------------------------------------------

MassMutual Institutional Funds - Letter to Shareholders (Continued)

- --------------------------------------------------------------------------------

Value Investing in Selective Markets

The domestic and international stock and bond markets required selectivity
during 1996. In selective markets, value investors like us benefit from the
extensive research that is an inherent part of our strategy. We view temporary
price fluctuations as a chance to buy the stocks and bonds we feel represent
strong opportunities over time. And by the same token, our value requirements
mean that we tend not to buy into or hold stocks and bonds that have already
appreciated significantly during a given cycle. This helps keep us from paying
too much for a security, or holding it too long.

Throughout 1996, our value approach was a benefit. While more growth-oriented
stock strategies often outperform during strong bull markets, at the domestic
market's current price levels, we feel a more conservative approach is
appropriate. In both bonds and overseas investments, our careful strategies
helped us successfully navigate the changing markets and avoid their pitfalls.

We Enter 1997 Cautiously Optimistic

As we head into 1997, we are entering the seventh year of economic expansion in
the U.S. While such a prolonged cycle is unusual, and the likelihood exists that
growth in the coming year may be slower than what we experienced in 1996, there
are still very few reasons to expect we are moving toward a recession. Not all
data has been finalized at this point, but it appears that the Christmas season
at the end of 1996, though a week shorter than usual, was fair. And while
announcements of layoffs repeatedly made news over the year, there is very
little net change in employment. While consumer debt has risen, consumer
confidence remains quite high. And finally, wages and prices are fairly stable,
with core inflation estimated to be a low three percent.

We believe these factors support cautious optimism for the financial markets in
1997. Until the scenario detailed above changes significantly, the Federal
Reserve should not feel pressure to change monetary policy dramatically. Without
more interest rate increases, the bond market should stabilize, so that income
can dictate returns without a drag from price performance. If rates are less
volatile, then stocks have a better change of continued positive results. We
will continue to do as we always do . . . look for value in whatever markets
prevail.


/s/ Stuart H. Reese

Stuart H. Reese
President
MassMutual Institutional Funds


2
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Prime Fund - Portfolio Manager Report
- --------------------------------------------------------------------------------

What are the investment objective and policies for the MassMutual Prime Fund?

The objective and policies of the Fund are to:
 . maximize current income, consistent with liquidity and preservation of capital
 . invest in a diversified portfolio of money market instruments
 . invest in high quality debt instruments with remaining maturity not to exceed
  397 days
Note: This is not a money market fund.

How has the Fund performed over the past year?

The Fund performed well. This has been another period of consistently good
performance both on an absolute basis and versus other money market type
investments. The yields from the very short maturity fixed income securities we
invest in remained competitive over the year, and that has helped us. In all,
during a year in which conflicting economic statistics caused volatility in the
longer end of the bond market, "cash" investments like this one have been a good
place for investors.

What was the strategy over the course of the year?

In short, because the market was more volatile in the longer maturities, keeping
the portfolio steady and short paid off again this year. The average life of the
portfolio was 45 days at year end, closely in line with that of Donohue's Money
Market Fund universe. Our strategy for outperformance during 1996 was again to
focus our investments on Tier 2 commercial paper. Since Prime Fund is not a
money market fund, we are able to own Tier 2 paper. Because it is of slightly
lower credit quality than Tier 1 paper, Tier 2 issues can offer real income
advantages to money managers with the investment flexibility and credit
expertise necessary to take advantage of them. Tier 2 investments served us well
over the year. Partly as a result of where most of the supply was to be found,
the top three industry sectors in which we had investments at year end were
finance companies, energy and railroads.

How is the portfolio currently positioned?

The portfolio is shorter now than it was at the beginning of 1996, and that
could be advantageous depending on what actions the Federal Reserve may take
going forward. If rates were to increase, owning securities that mature quickly
would enable us to replace them with newer, higher-yielding issues more rapidly.
That in turn would boost the portfolio's yield. Beyond maturity considerations,
we continue to conduct extensive research into both issuers and specific issues
in an effort to provide stability and competitive income in a highly liquid
investment portfolio.

What is the outlook for the Fund?

Our outlook continues to be positive both for the economy and for the Fund. We
believe the U.S. economy is still strong and growing but at a sustainable,
orchestrated rate with little evidence of inflation. If signs of inflation
should arise - and so far they haven't, even six years into the current growth
phase - we'd expect the Federal Reserve might raise rates slightly in reaction.
If interest rates were increased, it could potentially hurt stocks and the long
bond market. Funds like this one, however, would benefit from higher current
yields. Having said that, economic results for the fourth quarter of 1996 will
not be confirmed before February 1997. We believe the Federal Reserve is
unlikely to make any changes to rates until the statistical data to back such
decisions is available.

                           [LINE GRAPH APPEARS HERE]

Growth of a $10,000 Investment
Hypothetical Investments in MassMutual Prime Fund
Classes 1-4 and 91-day Treasury Bills

- ---------------------------------------------------------------
MassMutual Prime Fund
Total Return            One Year           Average Annual
                        1/1/96-12/1/96     10/3/94-12/31/96

Class 1                     4.05%              4.27%
Class 2                     4.63%              4.87%
Class 3                     5.00%              5.23%
Class 4                     5.24%              5.47%

- ---------------------------------------------------------------

91-Day                      5.03%              5.20%
Treasury Bills

- ---------------------------------------------------------------
Past performance is not predicitive of future results. The investment return and
principal value of shares of the Fund will fluctuate with market conditions so
that shares of the Fund . when redeemed, may be worth more or less than their
original cost. Investors should note that the Fund is a professionally managed
mutual fund, while 91-day Treasury Bills are unmanaged and do not incur
expenses.

                GROWTH OF A $10,000 INVESTMENT SINCE INCEPTION

<TABLE> 
<CAPTION> 

           Class 1  Class 2  Class 3  Class 4  T-Bills
                                               
<S>        <C>      <C>      <C>      <C>      <C> 
10/3/94    10,000   10,000   10,000   10,000   10,000
12/94      10,096   10,115   10,121   10,126   10,112
6/95       10,330   10,337   10,401   10,419   10,384
12/95      10,559   10,639   10,680   10,711   10,671
6/96       10,767   10,876   10,939   10,982   10,932
12/96      10,987   11,129   11,214   11,272   11,209
</TABLE> 


                                                                               3
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Prime Fund - Portfolio of Investments
- --------------------------------------------------------------------------------

Portfolio of Investments
December 31, 1996


<TABLE> 
<CAPTION> 
                                        Principal
                                         Amount     Market Value
                                         ------     ------------
<S>                                    <C>          <C> 
SHORT-TERM INVESTMENTS - 100.4%
Commercial Paper -- 99.8%
American Brands, Inc.
 5.320% 2/10/1997                      $ 4,925,000  $  4,895,888
Aristar, Inc.
 5.380% 1/28/1997                        4,445,000     4,427,064
Baxter International
 Inc.
 5.500% 3/21/1997                        4,425,000     4,370,622
Burlington Northern
 Santa Fe Corp.
 5.850% 1/30/1997                        8,800,000     8,758,530
Carter Holt Harvey
 Limited
 5.560% 3/11/1997                        5,270,000     5,213,435
Carter Holt Harvey
 Limited
 5.700% 1/10/1997                        3,855,000     3,849,507
Central and South
 West Corporation
 5.520% 1/14/1997                        9,435,000     9,416,193
Comdisco, Inc.
 5.520% 2/13/1997                        4,015,000     3,988,528
Comdisco, Inc.
 5.580% 3/14/1997                        5,000,000     4,944,000
ConAgra, Inc.
 5.500% 2/18/1997                        7,750,000     7,693,167
Cox Enterprises, Inc.
 5.480% 2/24/1997                        4,185,000     4,150,599
Cox Enterprises, Inc.
 5.530% 3/07/1997                        1,250,000     1,237,361
Crown Cork & Seal
 Company Inc.
 5.650% 3/06/1997                        2,865,000     2,836,477
CSX Corporation
 5.470% 1/31/1997                        4,980,000     4,957,299
CSX Corporation
 5.470% 2/14/1997                        4,450,000     4,420,249
Dana Credit
 Corporation
 5.470% 1/21/1997                        4,165,000     4,152,343
Dana Credit
 Corporation
 5.550% 1/10/1997                          890,000       888,765
Dean Witter, Discover
 & Company
 5.380% 1/31/1997                        4,955,000     4,932,785
Dominion Resources,
 Inc.
 5.500% 1/29/1997                        7,000,000     6,970,055
Dominion Resources,
 Inc.
 5.500% 2/20/1997                        2,300,000     2,282,431
Federal Signal Corp.
 5.450% 1/07/1997                        4,670,000     4,665,758
Frontier Corporation
 5.600% 2/14/1997                        5,385,000     5,348,143
General Motors
 Acceptance
 Corporation
 5.822% 2/04/1997                        7,690,000     7,881,516
Illinois Power
 Company
 5.590% 2/12/1997                        1,140,000     1,132,565
Illinois Power
 Company
 5.680% 2/19/1997                        7,800,000     7,739,697
ITT Corporation
 5.720% 2/06/1997                        4,870,000     4,842,144
ITT Corporation
 5.730% 1/13/1997                        4,900,000     4,890,641
Kerr-McGee Credit
 Corporation
 5.700% 2/11/1997                        6,475,000     6,432,966
Lockheed Martin
 Corporation
 5.480% 3/07/1997                        4,700,000     4,652,478
Lockheed Martin
 Corporation
 5.720% 1/24/1997                        2,290,000     2,281,632
Lockheed Martin
 Corporation
 5.750% 2/07/1997                        2,495,000     2,480,256
NYNEX Corporation
 5.420% 3/26/1997                        5,690,000     5,615,651
ORIX Credit Alliance,
 Inc.
 5.530% 2/28/1997                        4,700,000     4,658,125
ORIX Credit Alliance,
 Inc.
 5.550% 1/16/1997                        4,780,000     4,768,947
Praxair, Inc.
 5.450% 2/25/1997                        3,835,000     3,803,069
Praxair, Inc.
 5.450% 2/27/1997                        2,660,000     2,637,046
Praxair, Inc.
 5.450% 3/27/1997                        2,985,000     2,945,532
Public Service
 Company of Colorado
 5.600% 2/07/1997                        4,870,000     4,841,971
Public Service
 Electric and Gas
 Company
 5.520% 1/24/1997                          410,000       408,554
Ralston Purina
 Company
 5.500% 1/06/1997                        1,475,000     1,473,873
Rite Aid Corporation
 5.600% 3/04/1997                        5,510,000     5,456,859
Service Corporation
 International
 5.480% 2/03/1997                        7,170,000     7,133,983
Texas Utilities
 Electric Co.
 5.590% 2/12/1997                        8,800,000     8,742,609
Textron Financial
 Corporation
 5.550% 3/03/1997                        1,325,000     1,312,427
Textron Financial
 Corporation
 5.670% 3/24/1997                        8,700,000     8,589,027
Timken Company
 5.510% 3/04/1997                        5,000,000     4,951,778
Tyson Foods, Inc.
 5.720% 1/22/1997                        2,300,000     2,292,326
Union Camp Corp.
 5.475% 2/26/1997                        3,390,000     3,361,128
</TABLE> 

                                                                     (Continued)


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

4
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Prime Fund - Portfolio of Investments (Continued)
- --------------------------------------------------------------------------------

<TABLE> 
<CAPTION> 
                                        Principal
                                         Amount     Market Value
                                         ------     ------------
<S>                                    <C>          <C> 
Union Pacific
 Corporation
 5.620% 3/18/1997                      $ 7,635,000  $  7,544,737
UOP                  
 5.620% 2/26/1997                        1,645,000     1,630,619
UOP                  
 5.650% 3/05/1997                        7,425,000     7,352,235
UOP                  
 6.000% 2/10/1997                        3,150,000     3,129,000
Western Resources    
 Inc.                
 5.470% 2/27/1997                          490,000       485,756
Western Resources    
 Inc.                
 5.600% 1/15/1997                        8,625,000     8,606,217
Whirlpool Financial  
 Corporation         
 5.600% 1/17/1997                       10,070,000    10,044,936
                                                    ------------- 
                                                     258,519,499
                                                    -------------

Discount Note -- 0.6%
Federal Farm Credit  
 Bank                
 5.230% 8/19/1997                        1,530,000     1,475,260
                                                    ------------- 
                     
TOTAL SHORT-TERM     
INVESTMENTS                                          259,994,759
                                                    ============= 
(Cost $260,002,847)+

TOTAL INVESTMENTS-- 100.4%                           259,994,759

Other Assets/
(Liabilities) - (0.4%)                                  (933,278)
                                                    ------------- 

NET ASSETS-- 100.0%                                 $259,061,481
                                                    ============= 
</TABLE> 

Notes to Portfolio of Investments 
+Aggregate cost for Federal tax purposes (Note 7)











            [The remainder of this page intentionally left blank.]










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

                                                                               5
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Prime Fund - Financial Statements
- --------------------------------------------------------------------------------

                                                               December 31, 1996
                                                               -----------------
Statement of Assets and Liabilities

<TABLE>
<S>                                                                              <C> 
Assets:
     Short-term investments, at value (cost $260,002,847) (Note 2)............   $       259,994,759
     Cash.....................................................................                 1,293
     Receivables from:
       Fund shares sold.......................................................               967,627
       Investment manager (Note 3)............................................                 9,209
                                                                                 -------------------
         Total assets.........................................................           260,972,888
                                                                                 -------------------

Liabilities:
     Payables for:
       Fund shares redeemed...................................................             1,784,741
       Directors' fees and expenses (Note 3)..................................                 5,177
       Affiliates (Note 3):
         Investment management fees...........................................                95,194
         Administration fees..................................................                17,288
         Service and distribution fees........................................                   220
     Accrued expenses and other liabilities...................................                 8,787
                                                                                 -------------------
         Total liabilities....................................................             1,911,407
                                                                                 -------------------
     Net assets...............................................................   $       259,061,481
                                                                                 ===================

Net assets consist of:
     Paid-in capital..........................................................   $       258,996,044
     Undistributed net investment income......................................                80,676
     Accumulated net realized loss on investments.............................                (7,151)
     Net unrealized depreciation on investments...............................                (8,088)
                                                                                 -------------------
                                                                                 $       259,061,481
                                                                                 ===================
Net assets:
     Class 1..................................................................   $           109,724
                                                                                 ===================
     Class 2..................................................................   $           111,039
                                                                                 ===================
     Class 3..................................................................   $           111,694
                                                                                 ===================
     Class 4..................................................................   $       258,729,024
                                                                                 ===================
Shares outstanding:
     Class 1..................................................................               726.501
                                                                                 ===================
     Class 2..................................................................               734.255
                                                                                 ===================
     Class 3..................................................................               738.294
                                                                                 ===================
     Class 4..................................................................         1,713,473.880
                                                                                 ===================
Net asset value, offering price and
redemption price per share:
     Class 1..................................................................   $            151.03
                                                                                 ===================
     Class 2..................................................................   $            151.23
                                                                                 ===================
     Class 3..................................................................   $            151.29
                                                                                 ===================
     Class 4..................................................................   $            151.00
                                                                                 ===================
</TABLE> 


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

6
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Prime Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                              Year ended
                                                                           December 31, 1996
                                                                           -----------------
Statement of Operations
<S>                                                                   <C>
Investment income:
     Interest......................................................    $        14,350,850
                                                                       -------------------
Expenses (Note 1):
     Investment management fees (Note 3)...........................              1,150,292
     Custody fees..................................................                 26,962
     Audit and legal fees..........................................                  8,160
     Directors' fees (Note 3)......................................                 15,247
     Fees waived by the investment manager (Note 3)................                (89,223)
                                                                       -------------------
                                                                                 1,111,438
     Administration fees (Note 3):
       Class 1.....................................................                    605
       Class 2.....................................................                    557
       Class 3.....................................................                    344
       Class 4.....................................................                207,299
     Distribution and service fees (Note 3):
       Class 1.....................................................                    699
       Class 2.....................................................                    163
                                                                       -------------------
         Net expenses..............................................              1,321,105
                                                                       -------------------
         Net investment income.....................................             13,029,745
                                                                       -------------------

Realized and unrealized gain (loss):
     Net realized loss on investment transactions..................                 (5,068)
     Net change in unrealized appreciation (depreciation)
       on investments..............................................                 11,447
                                                                       -------------------
         Net realized and unrealized gain..........................                  6,379
                                                                       -------------------
     Net increase in net assets resulting from operations..........    $        13,036,124
                                                                       ===================

<CAPTION>
                                                                                 Year ended             Year ended
                                                                              December 31, 1996      December 31, 1995
                                                                              -----------------      -----------------
<S>                                                                    <C>                         <C>
Statements of Changes in Net Assets

Increase (Decrease) in Net Assets:
Operations:
     Net investment income..............................................     $        13,029,745    $        12,817,140
     Net realized loss on investment transactions.......................                  (5,068)                (1,781)
     Net change in unrealized appreciation (depreciation)
      on investments....................................................                  11,447                (15,459)
                                                                             -------------------    -------------------
         Net increase in net assets resulting from operations...........              13,036,124             12,799,900
                                                                             -------------------    -------------------

Distributions to shareholders (Note 2):
     From net investment income:
     Class 1............................................................                  (4,288)                (4,178)
     Class 2............................................................                  (4,922)                (4,746)
     Class 3............................................................                  (5,335)                (5,095)
     Class 4............................................................             (13,067,477)           (12,693,331)
                                                                             -------------------    -------------------
         Total distributions from net investment income.................             (13,082,022)           (12,707,350)
                                                                             -------------------    -------------------

Net fund share transactions (Note 5):
     Class 1............................................................                   4,288                  4,178
     Class 2............................................................                   4,922                  4,746
     Class 3............................................................                   5,335                  5,095
     Class 4............................................................               4,838,727             83,297,102
                                                                             -------------------    -------------------
         Increase in net assets from net fund share transactions........               4,853,272             83,311,121
                                                                             -------------------    -------------------
     Total increase in net assets.......................................               4,807,374             83,403,671

Net assets:
     Beginning of period................................................             254,254,107            170,850,436
                                                                             -------------------    -------------------
     End of period (including undistributed net investment income
      of $80,676 and $132,953, respectively)............................     $       259,061,481    $       254,254,107
                                                                             ===================    ===================
</TABLE>

   The accompanying notes are an integral part of the financial statements.    7
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Prime Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                 Class 1
                                                                                              ------------                     
                                                                           Year ended           Year ended         Period Ended
                                                                            12/31/96             12/31/95           12/31/94+**
                                                                          -----------         ------------         ------------
<S>                                                                       <C>                <C>                 <C> 
Net asset value, beginning of period                                      $   151.05          $    150.39          $    150.00
                                                                          -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                         6.09***              6.90 ***             1.02
  Net realized and unrealized gain (loss) on investments                        0.03                (0.01)                0.42
                                                                          -----------         ------------         ------------
   Total income (loss) from investment operations                               6.12                 6.89                 1.44
                                                                          -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                   (6.14)               (6.23)               (1.05)
                                                                          -----------         ------------         ------------
Net asset value, end of period                                            $   151.03          $    151.05          $    150.39
                                                                          ===========         ============         ============
Total Return                                                                    4.05%                4.58%                0.96%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                             $110                 $105                 $101
  Net expenses to average daily net assets#                                     1.65%                1.65%                1.65%*
  Net investment income to average daily net assets                             3.97%                4.48%                4.07%*

   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                 1.68%                1.68%                1.69%*

<CAPTION> 
                                                                                                 Class 2
                                                                                              ------------                     
                                                                           Year ended           Year ended         Period Ended
                                                                            12/31/96             12/31/95           12/31/94+**
                                                                          -----------         ------------         ------------
<S>                                                                      <C>                <C>                   <C> 
Net asset value, beginning of period                                      $   151.24          $    150.56          $    150.00
                                                                          -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                         6.96***              7.78 ***             1.16
  Net realized and unrealized gain (loss) on investments                        0.04                (0.02)                0.57
                                                                          -----------         ------------         ------------
   Total income (loss) from investment operations                               7.00                 7.76                 1.73
                                                                          -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                   (7.01)               (7.08)               (1.17)
                                                                          -----------         ------------         ------------
Net asset value, end of period                                            $   151.23          $    151.24          $    150.56
                                                                          ===========         ============         ============
Total Return                                                                    4.63%                5.16%                1.15%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                             $111                 $106                 $101
  Net expenses to average daily net assets#                                     1.10%                1.10%                1.10%*
  Net investment income to average daily net assets                             4.52%                5.03%                4.62%*

   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                 1.13%                1.13%                1.14%*
</TABLE> 

+All per share amounts for the period have been restated to reflect a 1-for-15
 reverse stock split effective December 16, 1994. 
*Annualized 
**For the period from October 3, 1994 (commencement of operations) through 
  December 31, 1994.
***Per share amount calculated on the average shares method, which more
   appropriately presents the per share data for the period since the use of
   the undistributed income method does not accord with the results of 
   operations.

8  The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Prime Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                   Class 3
                                                                                                ------------                     
                                                                             Year ended           Year ended         Period Ended
                                                                              12/31/96             12/31/95           12/31/94+**
                                                                            -----------         ------------         ------------
<S>                                                                       <C>                 <C>                  <C> 
Net asset value, beginning of period                                        $   151.32          $    150.61          $    150.00
                                                                            -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                           7.51***              8.33 ***             1.21
  Net realized and unrealized gain (loss) on investments                          0.05                (0.01)                0.61
                                                                            -----------         ------------         ------------
   Total income (loss) from investment operations                                 7.56                 8.32                 1.82
                                                                            -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                     (7.59)               (7.61)               (1.21)
                                                                            -----------         ------------         ------------
Net asset value, end of period                                              $   151.29          $    151.32          $    150.61
                                                                            ===========         ============         ============
Total Return                                                                      5.00%                5.53%                1.21%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                               $112                 $106                 $101
  Net expenses to average daily net assets#                                       0.75%                0.75%                0.75%*
  Net investment income to average daily net assets                               4.86%                5.38%                4.99%*
   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                   0.78%                0.78%                0.79%*

<CAPTION> 

                                                                                                   Class 4
                                                                                                ------------                     
                                                                             Year ended           Year ended         Period Ended
                                                                              12/31/96             12/31/95           12/31/94+**
                                                                            -----------         ------------         ------------
<S>                                                                        <C>                 <C>                 <C> 
Net asset value, beginning of period                                        $   151.06          $    150.36          $    150.00
                                                                            -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                           7.85***              8.70 ***             1.55
  Net realized and unrealized gain (loss) on investments                          0.06                (0.02)                0.34
                                                                            -----------         ------------         ------------
   Total income (loss) from investment operations                                 7.91                 8.68                 1.89
                                                                            -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                     (7.97)               (7.98)               (1.53)
                                                                            -----------         ------------         ------------
Net asset value, end of period                                              $   151.00          $    151.06          $    150.36
                                                                            ===========         ============         ============
Total Return@                                                                     5.24%                5.78%                1.26%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                           $258,729             $253,936             $170,548
  Net expenses to average daily net assets#                                     0.5160%              0.5160%              0.5160%*
  Net investment income to average daily net assets                               5.10%                5.61%                5.01%*
   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                 0.5509%              0.5468%              0.5605%*
</TABLE> 
+All per share amounts for the period have been restated to reflect a 1-for-15
 reverse stock split effective December 16, 1994. 
*Annualized 
**For the period from October 3, 1994 (commencement of operations) through 
  December 31, 1994.
***Per share amount calculated on the average shares method, which more
   appropriately presents the per share data for the period since the use of the
   undistributed income method does not accord with the results of operations.
@Employee retirement benefit plans that invest plan assets in the Separate
 Investment Accounts (SIAs) may be subject to certain charges as set forth in
 their respective Plan Documents. Total return figures would be lower for the
 periods presented if they reflected these charges.

   The accompanying notes are an integral part of the financial statements.    9
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Short-Term Bond Fund - Portfolio Manager Report
- --------------------------------------------------------------------------------

What are the investment objective and policies for the MassMutual Short-Term 
Bond Fund?

The objective and policies of the Fund are to:

 . achieve high total rate of return from current income while minimizing
  fluctuations in capital values
 . invest primarily in a diversified portfolio of short-term, investment-grade,
  fixed-income securities
 . manage duration to seek the best yield, while maintaining duration below three
  years to reduce volatility
 . diversify investments among market sectors on the basis of relative value

How did the Fund perform over the past year?

The Fund enjoyed strong performance during what was a tough year for the bond
market as a whole. Since longer-term bonds are more susceptible to price
fluctuations than shorter-term bonds, our focus on the short-to-intermediate
sector of the market served us well. In addition, because the market was
difficult, our risk-averse strategic positioning was beneficial. We look for
attractively-priced investment grade securities with limited potential for
principal value fluctuation, and that was exactly what was required in the past
year's market.

How did the bond market change over the year?

Most of the market's changes occurred during the first half of 1996. In contrast
to 1995, a rise in interest rates coupled with conflicting reports on the
direction of the economy in 1996 hurt prices, particularly in longer-term bonds.
So whereas price appreciation added to income for total return performance in
last year's market, negative price movements were a drag on income in many
sectors of this year's market.

What investment decisions worked best under these market conditions?

Though this is always a relatively short portfolio, when interest rates
increased, the yield curve steepened, meaning that there was more value to be
found in slightly longer bonds. As a result, we moved our average duration from
0.7 years at the end of 1995 to 2.7 years -- very close to our 3 year maximum --
by December 1996. This change helped us capture more yield without adding
significantly to interest rate risk.

As part of this program, we moved money out of shorter cash-type investments
into better-yielding Treasuries and corporate bonds. As an illustration, at the
end of 1995, we owned no Treasuries at all, but as of December 1996, they made
up 44 percent of the portfolio. Likewise, our corporate holdings, nine percent
of the portfolio in 1995 comprised 16 percent of the portfolio at year end.
These two decisions added both value and income to the portfolio. Over the
course of the year, we also bought selected asset-backed and government agency
securities with known cash flows for the income they offer and to help offset
the effects of some of our maturing assets. And finally, our holdings of
mortgage-backed securities were beneficial over the year. The fact that we tend
to emphasize issues that are either well-seasoned or call-protected, plus the
increase in rates over the year, meant steady income with minimal prepayment
risk.

What changes, if any, are being made to the portfolio?

Our investment decisions are heavily based on the shape of the yield curve, so
our duration will likely remain in its current range until the curve shifts.
Within those parameters, we're looking now, as we always do, for areas of
outstanding value among high quality bonds with short-to-intermediate
maturities. We continue to believe that with research, both mortgages and
corporate bonds can offer real opportunity. With rates where they are, mortgages
continue to look attractive, and with what appears to have been another steady
quarter under corporate America's belt, we'd expect corporate bonds to continue
to perform well.

What is the outlook for the Fund?

We're pleased with how well the Fund performed throughout the turbulence of the
past year, and believe it confirms that our strategy is a sound one. Looking
ahead, with the economy continuing to hold its own and few signs of a meaningful
uptick in inflation, we expect the bond market to have an easier time in 1997.
In this environment, we believe the Fund's limited duration positioning and
focus on attractively-priced issues will make it a desirable investment.

10
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Short-Term Bond Fund - Portfolio Manager Report (Continued)
- --------------------------------------------------------------------------------

Growth of a $10,000 Investment
Hypothetical Investment in MassMutual Short-Term
Bond Fund Classes 1-4 and the Lehman Brothers
1-3 Year Government Bond Index

<TABLE> 
<CAPTION> 
- ------------------------------------------------------------
MassMutual Short-Term Bond Fund
Total Return           One Year            Average Annual
                       1/1/96-12/31/96     10/3/94-12/31/96
<S>                    <C>                 <C> 
Class I                    4.35%                6.48%
Class 2                    5.02%                7.06%
Class 3                    5.28%                7.43%
Class 4                    5.57%                7.70%
- ------------------------------------------------------------
Lehman Brothers            5.04%                6.99%
1-3 Year
Government Bond Index
- ------------------------------------------------------------
</TABLE> 

Past Performance is not predictive of future relults. The investment return and
principal value of shares of the Fund will fluctuate with market conditions so
that shares of the Fund, when redeemed, may be worth more or less than their
original cost. Investors should note that the Fund is a professionally managed
mutual fund, while the Lehman Brothers 1-3 Year Government Bond Index is
unmanaged and does not incur expense.

                             [GRAPH APPEARS HERE]

GROWTH OF A $10,000 INVESTMENT SINCE INCEPTION
<TABLE> 
<S>           <C>        <C>        <C>        <C>        <C> 
"10/3/94"     10,000     10,000     10,000     10,000     10,000
"12/94"        9,983      9,991     10,013     10,013     10,002
"6/95"        10,730     10,769     10,801     10,816     10,661
"12/95"       11,035     11,101     11,160     11,192     11,086
"6/96"        11,165     11,264     11,346     11,380     11,244
"12/96"       11,516     11,658     11,750     11,816     11,643
</TABLE> 
                           [PIE CHART APPEARS HERE]

Quality Structure (12/31/96)
MassMutual Short-Term Bond Fund

U.S. Governments Cash Equivalents Aaa/AAA        83.9%
Baa/BBB                                           6.1%
Aa/AA                                             1.7%
A/A                                               8.3%

                           [PIE CHART APPEARS HERE]

Duration Diversification (12/31/96)
MassMutual Short-Term Bond Fund

Average Duration = 2.7 years

Less than 1 year                                 24.4%
7-10 years                                        2.1%
5-7 years                                        20.1%
1-3 years                                        42.5%
3-5 years                                        10.9%

                                                                              11
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Short-Term Bond Fund - Portfolio of Investments
- --------------------------------------------------------------------------------

Portfolio of Investments
December 31, 1996

<TABLE> 
<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                    <C>         <C> 
BONDS & NOTES - 83.9%
ASSET BACKED SECURITIES -- 7.6%
Capita Equipment
 Receivables Trust
 1996-1, Class A4
 6.280% 6/15/2000      $1,000,000  $  1,001,560
Chase Manhattan Auto
 Grantor Trust 1996-B,
 Class A
 6.610% 9/15/2002       1,829,055     1,841,621
Ford Credit 1994-B
 Grantor Trust
 7.300% 10/15/1999        357,498       361,520
Ford Credit Auto
 Loan Master Trust,
 Series 1992-1
 6.875% 1/15/1999       1,500,000     1,500,465
Ford Credit Auto
 Owner Trust 1996-B,
 Class A-4
 6.300% 1/15/2001       2,000,000     2,007,980
Nissan Auto
 Receivables 1994-A
 Grantor Trust,
 Class A
 6.450% 9/15/1999         626,917       628,484
Railcar Trust No.
 1992-1
 7.750% 6/01/2004       1,196,415     1,250,254
World Omni 1996-A
 Automobile Lease
 Securitization Trust,
 Class A1
 6.300% 6/25/2002       2,500,000     2,508,575
                                    ------------

TOTAL ASSET BACKED
SECURITIES                           11,100,459
                                    ------------
(Cost $11,074,953)

CORPORATE DEBT -- 16.1%
AirTouch
 Communications, Inc.
 7.500% 7/15/2006       1,000,000     1,026,480
America West Airlines
 1996-1, Class A
 6.850% 7/02/2009       2,000,000     1,960,000
Analog Devices, Inc.
 6.625% 3/01/2000       1,000,000       987,300
Associates Corporation
 of North America
 6.750% 8/01/2001       1,500,000     1,505,505
Bell Atlantic Financial
 Services, Inc.
 6.610% 2/07/2000       2,000,000     2,012,380
CSC Enterprises 144A
 6.500% 11/15/2001      2,000,000     1,992,380
Ford Motor Credit
 Company
 9.350% 6/10/1997       1,000,000     1,015,200
General American
 Transportation
 Corporation
 6.750% 3/01/2006       1,000,000       971,900
Lockheed Martin
 Corporation
 7.700% 6/15/2008       1,000,000     1,046,230
McDonnell Douglas
 Corporation
 6.875% 11/01/2006      1,000,000       981,260
Norfolk Southern
 Corporation
 7.400% 9/15/2006       1,000,000     1,015,570
NYNEX Capital
 Funding Company
 7.450% 5/01/1997       1,000,000     1,005,680
ORIX Credit Alliance,
 Inc. 144A
 6.480% 4/20/1999       2,000,000     1,997,600
Polaroid Corporation
 7.250% 1/15/1997       1,500,000     1,500,330
Rite Aid Corporation
 6.700% 12/15/2001      1,000,000       998,090
W.R. Grace & Co.
 8.000% 8/15/2004       3,240,000     3,430,253
                                    ------------
TOTAL CORPORATE DEBT                 23,446,158
                                    ------------
(Cost $23,230,308)

U.S. GOVERNMENT
AGENCY OBLIGATIONS -- 16.9%
Federal Home Loan Mortgage Corporation 
(FHLMC) -- 3.0%
Collateralized Mortgage Obligations -- 2.7%
FHLMC Series 1693
 Class G
 6.000% 7/15/2007       2,000,000     1,946,240
FHLMC Series 1704
 Class PE
 6.000% 7/15/2007       2,000,000     1,972,500
                                    ------------
                                      3,918,740
                                    ------------

Pass-Through Securities -- 0.3%
FHLMC
 4.750% 2/01/1997 -
        9/01/2006         531,541       508,060
                                    ------------
                                      4,426,800
                                    ------------

Federal National Mortgage Association
(FNMA) -- 3.9%
Collateralized Mortgage Obligations -- 2.7%
FNMA Series 1992-86
 Class C
 7.000% 6/25/2003          57,873        57,709
FNMA Series 1993-175
 Class PL
 5.000% 10/25/2002      1,390,909     1,381,770
FNMA Series 1993-71
 Class PG
 6.250% 7/25/2007       2,500,000     2,471,875
                                    ------------
                                      3,911,354
                                    ------------

Pass-Through Securities -- 1.2%
FNMA
 8.000% 5/01/2013         832,639       856,772
FNMA
 9.000% 10/01/2009        864,176       918,023
                                    ------------
                                      1,774,795
                                    ------------
                                      5,686,149
                                    ------------
</TABLE> 
                                                                     (Continued)

12 The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Short-Term Bond Fund - Portfolio of Investments (Continued)
- --------------------------------------------------------------------------------

<TABLE> 
<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                       <C>       <C> 
Government National Mortgage Association 
(GNMA) -- 1.3%
Pass-Through Securities -- 1.3%
GNMA
 8.000% 5/15/2001 -
         11/15/2007    $1,808,533  $  1,868,991
                                   -------------

U.S. Government Guaranteed Notes -- 8.7%
1991-A Jacksonville,
 FL
 8.400% 8/01/1997       1,150,000     1,167,250
1991-A St. Louis, MO
 8.400% 8/01/1997       3,350,000     3,400,250
1994-A Baxter
 Springs, KS
 6.310% 8/01/2001         500,000       497,390
1994-A Detroit, MI
 6.310% 8/01/2001         450,000       447,651
1994-A Jacksonville,
 FL
 6.310% 8/01/2001       1,485,000     1,477,248
1994-A Los Angeles
 County, CA
 6.310% 8/01/2001         225,000       223,826
1994-A Tacoma, WA
 6.310% 8/01/2001         195,000       193,982
1994-A Trenton, NJ
 6.310% 8/01/2001         145,000       144,243
U.S. Dept. of Housing
 and Urban
 Development, Series
 1995-A
 8.080% 8/01/1998       3,000,000     3,090,000
U.S. Dept. of Housing
 and Urban
 Development, Series
 1996-A
 6.440% 8/01/1999       2,000,000     2,012,500
                                   -------------
                                     12,654,340
                                   -------------

TOTAL U.S. GOVERNMENT
AGENCY OBLIGATIONS                   24,636,280
                                   -------------
(Cost $24,077,001)

<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                  <C>           <C> 
U.S. TREASURY OBLIGATIONS -- 43.3%
U.S. Treasury Notes
U.S. Treasury Note
 5.750% 8/15/2003    $  6,000,000  $  5,820,000
U.S. Treasury Note
 7.125% 2/29/2000      22,000,000    22,649,660
U.S. Treasury Note
 7.250% 5/15/2004      15,200,000    15,993,288
U.S. Treasury Note
 8.875% 2/15/1999      17,500,000    18,514,475
                                   -------------

TOTAL U.S. TREASURY
OBLIGATIONS                          62,977,423
                                   -------------
(Cost $62,760,329)

TOTAL BONDS & NOTES                 122,160,320
                                   -------------
(Cost $121,142,591)

<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                    <C>         <C> 
SHORT-TERM INVESTMENTS -- 14.7%
Commercial Paper
Bausch & Lomb Inc.
 5.600% 1/24/1997    $  4,435,000  $  4,419,133
Countrywide Home
 Loans, Inc.
 5.970% 1/14/1997         780,000       778,318
Crown Cork & Seal
 Company Inc.
 5.720% 1/09/1997         490,000       489,377
Crown Cork & Seal
 Company Inc.
 5.830% 2/13/1997       1,480,000     1,469,694
Crown Cork & Seal
 Company Inc.
 5.950% 2/13/1997         520,000       516,304
Dana Credit
 Corporation
 5.650% 1/30/1997         510,000       507,679
Illinois Power
 Company
 5.540% 1/16/1997       5,360,000     5,347,628
NYNEX Corporation
 6.250% 1/03/1997       4,360,000     4,358,486
ORIX Credit Alliance,
 Inc.
 6.080% 2/03/1997       1,210,000     1,203,256
Public Service
 Company of Colorado
 5.550% 1/03/1997         472,000       471,855
Public Service
 Electric and Gas
 Company
 5.600% 1/09/1997       1,840,000     1,837,710
                                   -------------

TOTAL SHORT-TERM
INVESTMENTS                          21,399,440
                                   -------------
(At Amortized Cost)

TOTAL INVESTMENTS -- 98.6%           143,559,760
(Cost $142,542,031)[

Other Assets/
(Liabilities) - 1.4%                  1,973,649
                                   -------------

NET ASSETS-- 100.0%                $145,533,409
                                   -------------
</TABLE> 

Notes to Portfolio of Investments 
+Aggregate cost for Federal tax purposes (Note 7)


144A: Securities exempt from registration under rule 144A of the Securities Act
 of 1933. The Securities may be resold in transactions exempt from registration,
 normally to qualified institutional buyers.

   The accompanying notes are an integral part of the financial statements.   13
<PAGE>
- --------------------------------------------------------------------------------
MassMutual Short-Term Bond Fund - Financial Statements
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                                                                                      December 31, 1996
                                                                                      -----------------
<S>                                                                             <C> 
Statement of Assets and Liabilities

Assets:
     Investments, at value (cost $121,142,591) (Note 2).........................   $       122,160,320
     Short-term investments, at amortized cost (Note 2).........................            21,399,440
                                                                                   -------------------
       Total Investments........................................................           143,559,760
     Cash.......................................................................                 1,576
     Receivables from:
       Fund shares sold.........................................................                25,221
       Interest.................................................................             2,325,244
       Investment manager (Note 3)..............................................                 7,243
                                                                                   -------------------
         Total assets...........................................................           145,919,044
                                                                                   -------------------

Liabilities:
     Payables for:
       Fund shares redeemed.....................................................               305,355
       Directors' fees and expenses (Note 3)....................................                 5,177
       Affiliates (Note 3):
         Investment management fees.............................................                57,775
         Administration fees....................................................                10,156
         Service and distribution fees..........................................                   232
     Accrued expenses and other liabilities.....................................                 6,940
                                                                                   -------------------
         Total liabilities......................................................               385,635
                                                                                   -------------------
     Net assets.................................................................   $       145,533,409
                                                                                   -------------------

Net assets consist of:
     Paid-in capital............................................................   $       144,792,097
     Undistributed net investment income........................................                18,783
     Accumulated net realized loss on investments...............................              (295,200)
     Net unrealized appreciation on investments.................................             1,017,729
                                                                                   -------------------
                                                                                   $       145,533,409
                                                                                   ===================

Net assets:
     Class 1....................................................................   $           115,863
                                                                                   ===================
     Class 2....................................................................   $           117,250
                                                                                   ===================
     Class 3....................................................................   $           118,001
                                                                                   ===================
     Class 4....................................................................   $       145,182,295
                                                                                   ===================
Shares outstanding:
     Class 1....................................................................                11,415
                                                                                   ===================
     Class 2....................................................................                11,544
                                                                                   ===================
     Class 3....................................................................                11,599
                                                                                   ===================
     Class 4....................................................................            14,365,202
                                                                                   ===================
Net asset value, offering price and
redemption price per share:
     Class 1....................................................................   $             10.15
                                                                                   ===================
     Class 2....................................................................   $             10.16
                                                                                   ===================
     Class 3....................................................................   $             10.17
                                                                                   ===================
     Class 4....................................................................   $             10.11
                                                                                   ===================
</TABLE> 

14 The accompanying notes are an integral part of the financial statements.
<PAGE>
- --------------------------------------------------------------------------------
MassMutual Short-Term Bond Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                              Year ended
                                                                                          December 31, 1996
                                                                                          -----------------
<S>                                                                                    <C>
Statement of Operations

Investment income:

     Interest.......................................................................    $         8,783,175
                                                                                        -------------------
Expenses (Note 1):
     Investment management fees (Note 3)............................................                606,206
     Custody fees...................................................................                 15,494
     Audit and legal fees...........................................................                  4,657
     Directors' fees (Note 3).......................................................                 15,247
     Fees waived by the investment manager (Note 3).................................                (47,791)
                                                                                        -------------------
                                                                                                    593,813
     Administration fees (Note 3):
       Class 1......................................................................                    628
       Class 2......................................................................                    577
       Class 3......................................................................                    353
       Class 4......................................................................                105,079
     Distribution and service fees (Note 3):
       Class 1......................................................................                    733
       Class 2......................................................................                    171
                                                                                        -------------------
         Net expenses...............................................................                701,354
                                                                                        -------------------
         Net investment income......................................................              8,081,821
                                                                                        -------------------

Realized and unrealized gain (loss):
     Net realized loss on investment transactions...................................               (274,845)
     Net change in unrealized appreciation (depreciation)
       on investments...............................................................               (384,702)
                                                                                        -------------------
         Net realized and unrealized loss...........................................               (659,547)
                                                                                        -------------------
     Net increase in net assets resulting from operations...........................    $         7,422,274
                                                                                        ===================
</TABLE>
   The accompanying notes are an integral part of the financial statements.   15
<PAGE>
- --------------------------------------------------------------------------------
MassMutual Short-Term Bond Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                                                                                  Year ended             Year ended
                                                                               December 31, 1996      December 31, 1995
                                                                               -----------------      -----------------
Statements of Changes in Net Assets                                                              
<S>                                                                         <C>                    <C> 
Increase (Decrease) in Net Assets:                                                               
Operations:                                                                                      
     Net investment income                                                     $       8,081,821      $       7,424,141
     Net realized gain (loss) on investment transactions                                (274,845)             2,489,218
     Net change in unrealized appreciation (depreciation)                                        
      on investments                                                                    (384,702)             2,855,699
                                                                               -----------------      -----------------
      Net increase in net assets resulting from operations                             7,422,274             12,769,058
                                                                               -----------------      -----------------
Distributions to shareholders (Note 2):                                                           
     From net investment income:                                                                 
     Class 1                                                                              (5,225)                (5,481)
     Class 2                                                                              (5,891)                (6,066)
     Class 3                                                                              (6,321)                (6,421)
     Class 4                                                                          (8,133,246)            (7,354,246)
                                                                               -----------------      -----------------
      Total distributions from net investment income                                  (8,150,683)            (7,372,214)
                                                                               -----------------      -----------------
     In excess of net investment income:                                                         
     Class 1                                                                                  (1)                    --
     Class 2                                                                                  (1)                    --
     Class 3                                                                                  (1)                    --
     Class 4                                                                              (1,569)                    --
                                                                               -----------------      -----------------
      Total distributions in excess of net investment income                              (1,572)                    --
                                                                               -----------------      -----------------
     From net realized gains:
     Class 1                                                                                 (59)                (2,049)
     Class 2                                                                                 (59)                (2,050)
     Class 3                                                                                 (59)                (2,046)
     Class 4                                                                             (71,288)            (2,256,969)
                                                                               -----------------      -----------------
      Total distributions from net realized gains                                        (71,465)            (2,263,114)
                                                                               -----------------      -----------------
Net fund share transactions (Note 5):
     Class 1                                                                               5,285                  7,530
     Class 2                                                                               5,951                  8,116
     Class 3                                                                               6,381                  8,467
     Class 4                                                                          23,078,364             12,933,618
                                                                               -----------------      -----------------
      Increase in net assets from net fund share transactions                         23,095,981             12,957,731
                                                                               -----------------      -----------------
     Total increase in net assets                                                     22,294,535             16,091,461
Net assets:
     Beginning of period                                                             123,238,874            107,147,413
                                                                               -----------------      -----------------
     End of period (including undistributed net investment
       income of $18,783 and $68,862, respectively)                            $     145,533,409      $     123,238,874
                                                                               =================      =================
</TABLE> 
16 The accompanying notes are an integral part of the financial statements.   
<PAGE>

- ------------------------------------------------------------------------------- 
MassMutual Short-Term Bond Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights

(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                Class 1
                                                                                             ------------                     
                                                                          Year ended           Year ended         Period Ended
                                                                           12/31/96             12/31/95           12/31/94**
                                                                         -----------         ------------         ------------
<S>                                                                      <C>                <C>                  <C> 
Net asset value, beginning of period                                     $    10.19          $      9.89          $     10.00
                                                                         -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                        0.50                 0.55                 0.09
  Net realized and unrealized gain (loss) on investments                      (0.05)                0.49                (0.11)
                                                                         -----------         ------------         ------------
   Total income (loss) from investment operations                              0.45                 1.04                (0.02)
                                                                         -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                  (0.48)               (0.54)               (0.09)
  From net realized gains                                                     (0.01)               (0.20)                   --
                                                                         -----------         ------------         ------------
   Total distributions                                                        (0.49)               (0.74)               (0.09)
                                                                         -----------         ------------         ------------
Net asset value, end of period                                           $    10.15          $     10.19          $      9.89
                                                                         ===========         ============         ============
Total Return                                                                   4.35%               10.54%               (0.17)%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                            $116                 $111                 $100
  Net expenses to average daily net assets#                                    1.65%                1.65%                1.65%*
  Net investment income to average daily net assets                            4.86%                5.20%                5.45%*
  Portfolio turnover rate                                                        61%                 114%                  15%
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                               1.68%                1.68%                1.70%*
</TABLE> 
<TABLE> 
<CAPTION> 

                                                                                                Class 2
                                                                                             ------------                     
                                                                          Year ended           Year ended         Period Ended
                                                                           12/31/96             12/31/95           12/31/94**
                                                                         -----------         ------------         ------------
<S>                                                                   <C>                   <C>                 <C> 
Net asset value, beginning of period                                     $    10.19          $      9.89          $     10.00
                                                                         -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                        0.56                 0.61                 0.10
  Net realized and unrealized gain (loss) on investments                      (0.04)                0.49                (0.11)
                                                                         -----------         ------------         ------------
   Total income (loss) from investment operations                              0.52                 1.10                (0.01)
                                                                         -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                  (0.54)               (0.60)               (0.10)
  From net realized gains                                                     (0.01)               (0.20)                  --
                                                                         -----------         ------------         ------------
   Total distributions                                                        (0.55)               (0.80)               (0.10)
                                                                         -----------         ------------         ------------
Net asset value, end of period                                           $    10.16          $     10.19          $      9.89
                                                                         ===========         ============         ============
Total Return                                                                   5.02%               11.11%               (0.09)%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                            $117                 $112                 $101
  Net expenses to average daily net assets#                                    1.10%                1.10%                1.10%*
  Net investment income to average daily net assets                            5.41%                5.75%                5.99%*
  Portfolio turnover rate                                                        61%                 114%                  15%
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                               1.13%                1.13%                1.15%*
</TABLE> 

*Annualized
**For the period from October 3, 1994 (commencement of operations) through
  December 31, 1994.

   The accompanying notes are an integral part of the financial statements.  17 
<PAGE>
- --------------------------------------------------------------------------------
MassMutual Short-Term Bond Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
Financial Highlights

(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                      Class 3
                                                                                                   ------------                     

                                                                                Year ended           Year ended         Period Ended
                                                                                 12/31/96             12/31/95           12/31/94**
                                                                               -----------         ------------         ------------
<S>                                                                         <C>                 <C>                   <C> 
Net asset value, beginning of period                                           $    10.21          $      9.91          $    10.00
                                                                               -----------         ------------         ------------

Income (loss) from investment operations:                                                                                    
  Net investment income                                                              0.60                 0.64                0.10
  Net realized and unrealized gain (loss) on investments                            (0.05)                0.49               (0.09)
                                                                               -----------         ------------         ------------

   Total income (loss) from investment operations                                    0.55                 1.13                0.01
                                                                               -----------         ------------         ------------

Less distributions to shareholders:                                                                                          
  From net investment income                                                        (0.58)               (0.63)              (0.10)
  From net realized gains                                                           (0.01)               (0.20)                 --
                                                                               -----------         ------------         ------------

   Total distributions                                                              (0.59)               (0.83)              (0.10)
                                                                               -----------         ------------         ------------

Net asset value, end of period                                                 $    10.17          $     10.21          $     9.91
                                                                               ===========         ============         ============

Total Return                                                                         5.28%               11.46%               0.13%
Ratios / Supplemental Data:                                                                                                  
  Net assets, end of period (000's)                                                  $118                 $112                $100
  Net expenses to average daily net assets#                                          0.75%                0.75%               0.75%*

  Net investment income to average daily net assets                                  5.76%                6.10%               6.36%*
  Portfolio turnover rate                                                              61%                 114%                 15%
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                                     0.79%                0.78%               0.80%*


<CAPTION> 

                                                                                                      Class 4
                                                                                                   ------------                     

                                                                                Year ended           Year ended         Period Ended
                                                                                 12/31/96             12/31/95           12/31/94**
                                                                               -----------         ------------         ------------
<S>                                                                         <C>                  <C>                    <C> 
Net asset value, beginning of period                                           $    10.15          $      9.85          $    10.00
                                                                               -----------         ------------         ------------
Income (loss) from investment operations:                                                                                 
  Net investment income                                                              0.60                 0.66                0.16
  Net realized and unrealized gain (loss) on investments                            (0.03)                0.50               (0.15)
                                                                               -----------         ------------         ------------
   Total income (loss) from investment operations                                    0.57                 1.16                0.01
                                                                               -----------         ------------         ------------
Less distributions to shareholders:                                                                                       
  From net investment income                                                        (0.60)               (0.66)              (0.16)
  From net realized gains                                                           (0.01)               (0.20)                 --
                                                                               -----------         ------------         ------------
   Total distributions                                                              (0.61)               (0.86)              (0.16)
                                                                               -----------         ------------         ------------
Net asset value, end of period                                                 $    10.11          $     10.15          $     9.85
                                                                               ==========          ============         ============
Total Return@                                                                        5.57%               11.77%               0.13%
Ratios / Supplemental Data:                                                                                               
  Net assets, end of period (000's)                                              $145,182             $122,904            $106,846
  Net expenses to average daily net assets#                                        0.5190%              0.5190%             0.5190%*

  Net investment income to average daily net assets                                  6.00%                6.32%               6.37%*

  Portfolio turnover rate                                                              61%                 114%                 15%
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                                   0.5545%              0.5524%             0.5654%*

</TABLE> 

*Annualized
**For the period from October 3, 1994 (commencement of operations) through
  December 31, 1994.
@Employee retirement benefit plans that invest plan assets in the Separate
 Investment Accounts (SIAs) may be subject to certain charges as set forth in
 their respective Plan Documents. Total return figures would be lower for the
 periods presented if they reflected these charges.

18 The accompanying notes are an integral part of the financial statements.  
<PAGE>
- --------------------------------------------------------------------------------
MassMutual Core Bond Fund - Portfolio Manager Report
- --------------------------------------------------------------------------------

What are the investment objective and policies for the MassMutual Core Bond
Fund?

The objective and policies of the Fund are to:

 . achieve high total rate of return over the long term consistent with prudent
  investment risk and the preservation of capital
 . invest primarily in investment-grade, fixed-income securities
 . maintain duration in a targeted range from four to seven years to reduce
  volatility
 . diversify investments by industry sector, maturity, issuer class, and quality
  sectors to reduce risk of capital erosion

How did the Fund perform over the past year?

1996 was a trying year for the bond market, in part because interest rates rose
somewhat over the course of the year, and also because releases of conflicting
economic data filled the market with a high degree of volatility. Even so, the
Fund's performance was positive. The portfolio's results were closely in line
with its benchmark, the Lehman Brothers Government/Corporate Bond Index.

How did the bond market change over the past year?

Although there was a good degree of volatility throughout the year, conditions
changed most during the first half of 1996. During 1995, interest rates fell,
leading to excellent performance. In contrast, as rates increased over the past
year, prices, especially in longer bonds and Treasuries, were damaged. So
although we were fully diversified across bond market sectors and maturities,
this downturn had a temporary dampening effect on our portfolio's performance.

What investments worked best under these conditions?

Though the impact of the rate increase was felt immediately, the resulting
steepening of the yield curve created value in the market over the longer term.
As the curve steepened, we were able to move out of very short-term securities
toward better yielding alternatives that we expect will perform well for us
going forward.

Beyond that, not all areas of the market suffered during the year.
Non-investment grade bonds performed particularly well. While we avoided this
sector of the market because of the relative risks associated with it, we were
pleased with our holdings of investment grade corporate bonds and
mortgage-backed securities. Investment grade corporate bonds, which made up 33.4
percent of the portfolio as of December 31, 1996, remained strong regardless of
the broader market's difficulties. Corporate profits held steady, and as a
result, demand in the bond market supported prices. Some of the corporate bonds
that performed best for us were airline enhanced equipment trusts. These are
bonds backed by assets such as planes and capital equipment, and they benefited
as profitability increased across the airline business.

In addition to our successes with corporate bonds, mortgage-backed securities
performed well. We tend to buy well-structured, seasoned issues, and, as their
behavior tends to mimic corporate bonds, they worked well for us again this
year. Since concerns about the prepayment of all types of mortgages are greatest
when rates are falling, these securities paid competitive income and avoided
significant price declines during the past year. Mortgage-backed securities were
19.9 percent of the Fund's portfolio at year end.

What changes, if any, are being made to the portfolio?

Because of their strong performance, we would have liked to have owned more
mortgage-backed securities and corporate bonds than we did over the year. After
their dramatic 1996 movements, however, they are currently less compelling as
value investments. So, at this time, we're not really making any major changes
to our sector holdings.

Looking for value is an inherent part of our strategy, and we've continued to do
that. With an impressive growth in assets under management this year, we are
generally sticking with our bottom-up investment approach. We're keeping our
duration neutral relative to our benchmark and constantly performing extensive
credit analyses across the investment grade bond market. We work to add value
for investors by looking at individual issues from a critical risk/reward
perspective, hoping to discover outstanding opportunities for both income and
appreciation.

What is the outlook for the Fund?

Our outlook for both the Fund and the bond market is positive. The economy, even
in the sixth year of an expansion, appears steady, and shows little in the way
of inflation. With that as a background, we expect the coming year to be a good
one. Without threats of inflation, it is unlikely that the Federal Reserve will
move aggressively. While we may see minor volatility in the market, we'd expect
improvements going forward and a market whose performance is primarily a product
of coupon income.

                                                                              19
<PAGE>

- --------------------------------------------------------------------------------
Mass Mutual Core Fund -- Portfolio Manager Report (Continued)
- --------------------------------------------------------------------------------

    [CHART OF GROWTH OF A $10,000 INVESTMENT SINCE INCEPTION APPEARS HERE]
<TABLE> 
<S>         <C>        <C>      <C>       <C>       <C> 
"10/3/94"     10000     10000     10000     10000     10000
"12/94"       10000     10008     10009     10020     10037
"6/95"        11121     11170     11192     11212     11220
"12/95"       11781     11860     11894     11940     11968
"6/96"        11475     11575     11645     11695     11743
"12/96"       11970     12105     12197     12274     12315
</TABLE> 

                 [PIE CHART OF QUALITY STRUCTURE APPEARS HERE]

                    [PIE CHART OF DURATION DIVERSIFICATION]

20
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Core Bond Fund - Portfolio of Investments
- --------------------------------------------------------------------------------

Portfolio of Investments
December 31, 1996
<TABLE> 
<CAPTION> 

                                  Principal
                                   Amount     Market Value
                                   ------     ------------
<S>                                <C>        <C> 
BONDS & NOTES - 97.0%
ASSET BACKED SECURITIES -- 8.1%
Capita Equipment
 Receivables Trust
 1996-1, Class A4
 6.280% 6/15/2000                 $3,000,000  $  3,004,680
Chase Manhattan Auto  
 Grantor Trust 1996-B,
 Class A              
 6.610% 9/15/2002                  4,572,639     4,604,053
Daimler-Benz Auto     
 Grantor Trust 1995-A,
 Class A              
 5.850% 5/15/2002                  2,505,290     2,503,712
Daimler-Benz Vehicle  
 Trust 1994-A         
 5.950% 12/15/2000                   220,873       221,079
Ford Credit 1994-B    
 Grantor Trust        
 7.300% 10/15/1999                   536,247       542,280
Ford Credit Auto      
 Loan Master Trust,   
 Series 1992-1        
 6.875% 1/15/1999                  2,000,000     2,000,620
Ford Credit Auto      
 Owner Trust 1996-B,  
 Class A-4            
 6.300% 1/15/2001                  5,000,000     5,019,950
Keystone Auto         
 Grantor Trust 1996-B,
 Class A 144A         
 6.150% 4/15/2003                  2,801,590     2,799,349
Nissan Auto           
 Receivables 1994-A   
 Grantor Trust,       
 Class A              
 6.450% 9/15/1999                  1,253,833     1,256,967
Railcar Trust No.     
 1992-1               
 7.750% 6/01/2004                  1,395,818     1,458,629
World Omni 1995-A     
 Automobile Lease     
 Securitization Trust,
 Class A              
 6.050% 11/25/2001                 2,835,307     2,838,852

<CAPTION> 
                                  Principal
                                    Amount     Market Value
                                    ------     ------------
<S>                                 <C>        <C> 
World Omni 1996-A     
 Automobile Lease     
 Securitization Trust,
 Class A1             
 6.300% 6/25/2002                  2,650,000     2,659,090
                                               ------------
                      
TOTAL ASSET BACKED    
SECURITIES                                      28,909,261
                                               ------------
(Cost $28,855,243)

CORPORATE DEBT -- 33.0%
AirTouch
 Communications, Inc.
 7.500% 7/15/2006                   3,000,000     3,079,440
America West Airlines              
 1996-1, Class A                   
 6.850% 7/02/2009                   4,000,000     3,920,000
American Airlines, Inc.  
 9.780% 11/26/2011                  2,000,000     2,277,500
AMR Corporation (D)                
 9.000% 8/01/2012                   2,000,000     2,263,880
Analog Devices, Inc. (D)                     
 6.625% 3/01/2000                   1,500,000     1,480,950
Associates Corporation   
 of North America        
 6.750% 8/01/2001                   2,000,000     2,007,340
Associates Corporation                       
 of North America (D)              
 7.875% 9/30/2001                   1,500,000     1,573,275
Bell Atlantic Financial  
 Services, Inc.                    
 6.610% 2/04/2000                   1,750,000     1,760,868
BHP Finance (USA)
 Limited
 6.420% 3/01/2026                   3,500,000     3,464,685
Capital Cities/ABC,              
 Inc.                            
 8.875% 12/15/2000                    875,000       944,151
Champion International 
 Corporation           
 6.400% 2/15/2026                   2,500,000     2,386,725
The Charles Schwab     
 Corporation                     
 6.250% 1/23/2003                   2,500,000     2,409,375
Chrysler Corporation   
 10.400% 8/01/1999                  1,500,000     1,537,440
                                 
<CAPTION>                        
                                    Principal
                                     Amount     Market Value
                                     ------     ------------
<S>                                <C>          <C> 
CITGO Petroleum      
 Corporation         
 7.875% 5/15/2006                   1,000,000     1,019,600
Columbia Gas System, 
 Inc.                            
 6.610% 11/28/2002                  3,000,000     2,976,750
Commercial Credit    
 Company (D)            
 7.750% 3/01/2005                   3,000,000     3,133,380
Continental Airlines,            
 Inc., Series 1996-2B
 8.560% 7/02/2014                   1,749,640     1,904,921
Continental Airlines,
 Inc., Series 1996-B
 7.820% 10/15/2013                  2,000,000     2,067,400
Corning Glass Works (D)            
 8.875% 3/15/2016                   1,000,000     1,128,240
English China Clays               
 Delaware Inc. (D)    
 7.375% 10/01/2002                  1,000,000     1,027,760
Equifax Inc.                      
 6.500% 6/15/2003                   1,000,000       973,260
ERAC USA Finance                              
 Company 144A                     
 6.950% 1/15/2006                   1,500,000     1,475,625
FBG Finance Ltd.      
 144A                             
 7.875% 6/01/2016                   3,000,000     3,049,830
Fletcher Challenge Ltd            
 7.750% 6/20/2006                   2,000,000     2,074,100
Foster Wheeler        
 Corporation                      
 6.750% 11/15/2005                  2,000,000     1,932,440
General American
 Transportation
 Corporation
 6.750% 3/01/2006                   3,000,000     2,915,700
General Electric
 Capital Corporation
 8.750% 5/21/2007                   1,500,000     1,700,370
General Telephone
 Company of Florida
 7.500% 8/01/2002                   1,000,000     1,011,310
The Goldman Sachs
 Group, L.P. 144A
 6.200% 2/15/2001                   2,500,000     2,450,000
</TABLE> 
                                                                     (Continued)

   The accompanying notes are an integral part of the financial statements.   21
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Core Bond Fund - Portfolio of Investments (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                      <C>        <C> 
Harrahs Operating Inc.
 8.750% 3/15/2000      $1,100,000  $  1,113,750
Hercules Incorporated (D)  
 6.625% 6/01/2003       2,000,000     1,979,860
IMCERA Group Inc. (D)    
 6.000% 10/15/2003      1,000,000       957,700
Leucadia National
 Corporation
 7.750% 8/15/2013       2,500,000     2,471,425
Lockheed Martin
 Corporation
 7.700% 6/15/2008       3,000,000     3,138,690
McDonnell Douglas
 Corporation 
 6.875% 11/01/2006      3,000,000     2,943,780
McDonnell Douglas
 Corporation (D)   
 9.250% 4/01/2002       1,500,000     1,675,350
Newmont Mining
 Corporation    
 8.625% 4/01/2002       2,000,000     2,111,380
News America
 Holdings Incorporated
 9.250% 2/01/2013       3,000,000     3,360,870
Norfolk Southern
 Corporation
 7.220% 9/15/2006       3,000,000     3,056,580
Norfolk Southern
 Corporation
 7.400% 9/15/2006       2,000,000     2,031,140
North Finance
 (Bermuda) Limited
 144A
 7.000% 9/15/2005       2,000,000     1,970,000
Pearson Inc. 144A
 7.375% 9/15/2006       3,000,000     3,012,900
Penske Truck Leasing
 Co., L.P.
 7.750% 5/15/1999       1,500,000     1,548,210
Ralston Purina
 Company
 7.750% 10/01/2015      2,000,000     2,050,920
Rite Aid Corporation
 6.700% 12/15/2001      2,000,000     1,996,180
Rolls-Royce Capital
 Inc.
 7.125% 7/29/2003       2,000,000     2,002,980
Scholastic Corporation
 7.000% 12/15/2003      4,000,000     3,992,280
Thomas & Betts
 Corporation (D)   
 8.250% 1/15/2004       2,500,000     2,597,825
Time Warner Inc.
 7.750% 6/15/2005       3,000,000     3,017,790
United Air Lines, Inc.
 10.110% 2/19/2006        939,710     1,040,390
US Air, Inc.
 7.500% 10/15/2009      1,461,057     1,475,667

<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                      <C>       <C> 
Valassis
 Communications, Inc.
 9.550% 12/01/2003   $  2,000,000  $  2,081,280
Westinghouse Electric
 Corporation
 8.375% 6/15/2002       1,000,000     1,019,670
W.R. Grace & Co.
 8.000% 8/15/2004       5,000,000     5,293,600
                                   ------------
TOTAL CORPORATE DEBT                117,886,532
                                   ------------
(Cost $114,776,584)

NON - U.S. GOVERNMENT
AGENCY OBLIGATIONS -- 1.1%
Collateralized Mortgage Obligation
Prudential Home
 Mortgage Securities
 1993-26 Class A6
 6.750% 7/25/2008       4,000,000     4,008,720
                                   ------------
(Cost $3,955,000)

U.S. GOVERNMENT
AGENCY OBLIGATIONS -- 20.2%
Federal Home Loan Mortgage Corporation 
(FHLMC) -- 4.6%
Collateralized Mortgage Obligations -- 4.5%
FHLMC Series 1080
 Class D
 7.000% 7/15/2020       2,900,319     2,933,847
FHLMC Series 1322
 Class G
 7.500% 2/15/2007       2,000,000     2,048,120
FHLMC Series 1460
 Class H
 7.000% 5/15/2007       2,000,000     2,020,000
FHLMC Series 1490
 Class PJ
 6.000% 5/15/2007         600,000       589,122
FHLMC Series 1612
 Class PD
 5.750% 5/15/2006       5,000,000     4,915,600
FHLMC Series 1625
 Class EA
 5.750% 3/15/2007       3,500,000     3,436,545
                                   ------------
                                     15,943,234
                                   ------------
Pass-Through Securities -- 0.1%
FHLMC
 9.000% 3/01/2017         368,612       392,225
                                   ------------
                                     16,335,459
                                   ------------
Federal National Mortgage
Association (FNMA) -- 5.6%
Collateralized Mortgage Obligations -- 5.4%
FNMA Series 1989-20
 Class A
 6.750% 4/25/2018       4,267,616     4,107,580
FNMA Series 1992-86
 Class C
 7.000% 6/25/2003         115,745       115,419

<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                      <C>       <C> 
FNMA Series 1993-134
 Class GA
 6.500% 2/25/2007    $  5,000,000  $  4,964,050
FNMA Series 1993-175
 Class PL
 5.000% 10/25/2002      1,390,909     1,381,770
FNMA Series 1993-191
 Class PD
 5.400% 3/25/2004       1,500,000     1,487,340
FNMA Series 1993-221
 Class D
 6.000% 12/25/2008      2,500,000     2,390,625
FNMA Series 1996-54
 Class C
 6.000% 9/25/2008       5,000,000     4,800,000
                                   ------------
                                     19,246,784
                                   ------------
Pass-Through Securities -- 0.2%
FNMA
 8.000% 5/01/2013         555,094       571,180
                                   ------------
                                     19,817,964
                                   ------------
Government National Mortgage
Association (GNMA) -- 8.3%
Collateralized Mortgage Obligation -- 0.5%
JHM Acceptance
 Corporation Series E
 Class 5
 8.960% 4/01/2019       1,633,748     1,718,491
                                    -----------
Pass-Through Securities -- 7.8%
GNMA
 6.000% 12/20/2025      5,579,916     5,706,355
GNMA    
 7.000% 7/20/2025 -
          9/20/2025     5,474,412     5,591,443
GNMA
 7.500% 1/15/2017 -
          6/15/2017     7,142,857     7,188,784
GNMA
 8.000% 4/15/2001 -
          3/15/2008     8,808,388     9,102,855
GNMA
 9.000% 12/15/2004 -
          10/15/2009      500,156       532,822
                                   ------------
                                     28,122,259
                                   ------------
                                     29,840,750
                                   ------------
U.S. Government Guaranteed Notes -- 1.7%
1994-A Baxter
 Springs, KS
 5.930% 8/01/1999         700,000       696,500
1994-A Erie, PA
 5.930% 8/01/1999       1,590,000     1,582,050
1994-A Los Angeles
 County, CA
 5.930% 8/01/1999         190,000       189,050

</TABLE> 
                                                                     (Continued)

22 The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Core Bond Fund - Portfolio of Investments (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                      <C>        <C> 
1994-A Montgomery
 County, PA
 5.930% 8/01/1999      $  150,000  $    149,250
1994-A Pohatcong
 Township, NJ
 5.930% 8/01/1999         255,000       253,725
1994-A Rochester, NY
 5.930% 8/01/1999         135,000       134,325
1994-A Sacramento,
 CA
 5.930% 8/01/1999          60,000        59,700
1994-A Santa Ana,
 CA
 5.930% 8/01/1999         920,000       915,400
U.S. Dept. of Housing
 and Urban
 Development, Series
 1996-A
 6.670% 8/01/2001       2,000,000     2,020,000
                                   ------------
                                      6,000,000
                                   ------------
TOTAL U.S. GOVERNMENT
AGENCY OBLIGATIONS                   71,994,173
                                   ------------
(Cost $70,455,483)

U.S. TREASURY OBLIGATIONS -- 34.6%
U.S. Treasury Bonds -- 15.4%
U.S. Treasury Bond
 7.250% 5/15/2016      20,700,000    21,857,958
U.S. Treasury Bond
 8.875% 8/15/2017      26,750,000    33,040,530
                                   ------------
                                     54,898,488
                                   ------------
U.S. Treasury Notes -- 13.6%
U.S. Treasury Note
 5.875% 4/30/1998       7,000,000     7,010,920
U.S. Treasury Note
 6.375% 5/15/1999      23,500,000    23,701,865
U.S. Treasury Note
 8.875% 11/15/1998     17,000,000    17,887,230
                                   ------------
                                     48,600,015
                                   ------------
U.S. Treasury Strips -- 5.6%
U.S. Treasury Strip -- Principal Only
 0.000% 2/15/1999      19,500,000    17,237,220
U.S. Treasury Strip -- Principal Only
 0.000% 2/15/2015       9,250,000     2,708,308
                                   ------------
                                     19,945,528
                                   ------------
TOTAL U.S. TREASURY
OBLIGATIONS                         123,444,031
                                   ------------
(Cost $123,480,345)

TOTAL BONDS & NOTES                 346,242,717
                                   ------------
(Cost $341,522,655)

<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                      <C>        <C> 
SHORT-TERM INVESTMENTS -- 1.8%
Commercial Paper
Bausch & Lomb Inc.
 6.850% 1/08/1997       1,140,000     1,138,482
Indiana Michigan
 Power Company
 6.700% 1/03/1997       3,000,000     2,998,883
Lockheed Martin
 Corporation
 7.000% 1/02/1997       2,355,000     2,354,542
                                   ------------
TOTAL SHORT-TERM
INVESTMENTS                           6,491,907
                                   ------------
(At Amortized Cost)

TOTAL INVESTMENTS -- 98.8%          352,734,624
(Cost $348,014,562)[

Other Assets/
(Liabilities) - 1.2%                  4,330,553
                                   ------------
NET ASSETS-- 100.0%                $357,065,177
                                   ------------

</TABLE> 
Notes to Portfolio of Investments 
+Aggregate cost for Federal tax purposes 
(Note 7)

144A: Securities exempt from registration under rule 144A of the Securities Act
 of 1933. The Securities may be resold in transactions exempt from registration,
 normally to qualified institutional buyers.

(D) All or a portion of this security is segregated to cover forward purchase
commitments (Note 2).

   The accompanying notes are an integral part of the financial statements.   23
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Core Bond Fund - Financial Statements
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                                                               December 31, 1996
                                                               ----------------
Statement of Assets and Liabilities
<S>                                                          <C> 
Assets:
     Investments, at value (cost $341,522,655) (Note 2).....   $    346,242,717
     Short-term investments, at amortized cost (Note 2).....          6,491,907
                                                               ----------------
       Total Investments....................................        352,734,624
     Cash...................................................              4,936
     Receivables from:
       Fund shares sold.....................................            380,193
       Interest.............................................          4,574,725
       Investment manager (Note 3)..........................             17,663
                                                               ----------------
         Total assets.......................................        357,712,141
                                                               ----------------
Liabilities:
     Payables for:
       Investments purchased................................            142,615
       Settlement of investments purchased on a
         forward commitment basis (Note 2)..................             11,739
       Fund shares redeemed.................................            306,112
       Directors' fees and expenses (Note 3)................              5,176
       Affiliates (Note 3):
         Investment management fees.........................            139,334
         Administration fees................................             26,194
         Service and distribution fees......................                243
     Accrued expenses and other liabilities.................             15,551
                                                               ----------------
         Total liabilities..................................            646,964
                                                               ----------------
     Net assets.............................................   $    357,065,177
                                                               ================
Net assets consist of:
     Paid-in capital........................................        352,396,989
     Undistributed net investment income....................          1,845,746
     Accumulated net realized loss on investments...........         (1,885,881)
     Net unrealized appreciation on investments
         and forward commitments............................          4,708,323
                                                               ----------------
                                                               $    357,065,177
                                                               ================
Net assets:
     Class 1................................................   $        120,838
                                                               ================
     Class 2................................................   $        122,293
                                                               ================
     Class 3................................................   $        123,107
                                                               ================
     Class 4................................................   $    356,698,939
                                                               ================
Shares outstanding:
     Class 1................................................             11,512
                                                               ================
     Class 2................................................             11,631
                                                               ================
     Class 3................................................             11,699
                                                               ================
     Class 4................................................         34,141,922
                                                               ================
Net asset value, offering price and
redemption price per share:
     Class 1................................................   $          10.50
                                                               ================
     Class 2................................................   $          10.51
                                                               ================
     Class 3................................................   $          10.52
                                                               ================
     Class 4................................................   $          10.45
                                                               ================
</TABLE> 

24  The accompanying notes are an integral part of the finanial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Core Bond Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                                                              Year ended
                                                           December 31, 1996
                                                           -----------------
Statement of Operations                              
<S>                                                       <C> 
Investment income:
     Interest...........................................   $     20,691,459
                                                           -----------------
Expenses (Note 1):
     Investment management fees (Note 3)................          1,375,667
     Custody fees.......................................             38,056
     Audit and legal fees...............................             10,158
     Directors' fees (Note 3)...........................             15,247
     Fees waived by the investment manager (Note 3).....           (128,270)
                                                           -----------------
                                                                  1,310,858
     Administration fees (Note 3):
       Class 1..........................................                737
       Class 2..........................................                614
       Class 3..........................................            257,095
     Distribution and service fees (Note 3):
       Class 1..........................................                842
       Class 2..........................................                178
                                                           -----------------
         Net expenses...................................          1,570,706
                                                           -----------------
         Net investment income..........................         19,120,753
                                                           -----------------

Realized and unrealized gain (loss):
     Net realized loss on investment transactions
     and forward commitments............................         (1,886,093)
     Net change in unrealized appreciation
     (depreciation) on
       investments and forward commitments..............         (6,456,882)
                                                           -----------------
         Net realized and unrealized loss...............         (8,342,975)
                                                           -----------------
     Net increase in net assets resulting from
     operations.........................................   $     10,777,778
                                                           =================
</TABLE> 

   The accompanying notes are an integral part of the financial statements.   25
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Core Bond Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                                                                                   Year ended             Year ended
                                                                                December 31, 1996      December 31, 1995
                                                                                -----------------      -----------------
Statements of Changes in Net Assets
<S>                                                                        <C>                     <C> 
Increase (Decrease) in Net Assets:
Operations:
     Net investment income................................................       $    19,120,753        $    14,053,804
     Net realized gain (loss) on investment transactions
      and forward commitments.............................................            (1,886,093)             9,143,745
     Net change in unrealized appreciation (depreciation) on
      investments and forward commitments.................................            (6,456,882)            14,064,619
                                                                                -----------------      -----------------
      Net increase in net assets resulting from operations................            10,777,778             37,262,168
                                                                                -----------------      -----------------
Distributions to shareholders (Note 2):
     From net investment income:
     Class 1..............................................................                (4,416)                (7,975)
     Class 2..............................................................                (5,227)                (5,956)
     Class 3..............................................................                (5,674)                (6,329)
     Class 4..............................................................           (17,374,307)           (13,924,661)
                                                                                -----------------      -----------------
      Total distributions from net investment income......................           (17,389,624)           (13,944,921)
                                                                                -----------------      -----------------
     From net realized gains:
     Class 1..............................................................                  (740)                (4,784)
     Class 2..............................................................                  (714)                (3,332)
     Class 3..............................................................                  (715)                (3,329)
     Class 4..............................................................            (1,942,817)            (7,028,844)
                                                                                -----------------      -----------------
      Total distributions from net realized gains.........................            (1,944,986)            (7,040,289)
                                                                                -----------------      -----------------
Net fund share transactions (Note 5):
     Class 1..............................................................               (45,858)                61,915
     Class 2..............................................................                 5,941                  9,288
     Class 3..............................................................                 6,389                  9,658
     Class 4..............................................................           111,704,711             43,139,641
                                                                                -----------------      -----------------
      Increase in net assets from net fund share transactions.............           111,671,183             43,220,502
                                                                                -----------------      -----------------
     Total increase in net assets.........................................           103,114,351             59,497,460
Net assets:
     Beginning of period..................................................           253,950,826            194,453,366
                                                                                -----------------      -----------------
     End of period (including undistributed net investment income
      of $1,845,746 and $114,829, respectively)...........................       $   357,065,177        $   253,950,826
                                                                                =================      =================
</TABLE> 

26 The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Core Bond Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                      Class 1     
                                                                                                   ------------                    
                                                                                Year ended           Year ended        Period Ended
                                                                                 12/31/96             12/31/95          12/31/94**
                                                                               -----------         ------------        ------------
<S>                                                                        <C>                   <C>                 <C> 
Net asset value, beginning of period                                           $    10.79          $      9.90         $     10.00
                                                                               -----------         ------------        ------------
Income (loss) from investment operations:                                                                         
  Net investment income                                                              0.53***              0.50                0.10
  Net realized and unrealized gain (loss) on investments                            (0.36)                1.26               (0.10)
                                                                               -----------         ------------        ------------
   Total income (loss) from investment operations                                    0.17                 1.76                  --
                                                                               -----------         ------------        ------------
Less distributions to shareholders:                                                                               
  From net investment income                                                        (0.40)               (0.54)              (0.10)
  From net realized gains                                                           (0.06)               (0.33)                 --
                                                                               -----------         ------------        ------------
   Total distributions                                                              (0.46)               (0.87)              (0.10)
                                                                               -----------         ------------        ------------
Net asset value, end of period                                                 $    10.50          $     10.79         $      9.90
                                                                               ===========         ============        ============
Total Return                                                                         1.60%               17.81%               0.00%
Ratios / Supplemental Data:                                                                                       
  Net assets, end of period (000's)                                                  $121                 $171                $101
  Net expenses to average daily net assets#                                          1.65%                1.65%               1.65%*
  Net investment income to average daily net assets                                  5.10%                5.39%               5.91%*
  Portfolio turnover rate                                                              54%                 104%                  7%
   #Computed after giving effect to the reduction in                                                              
    management fee by MassMutual. Without this reduction of                                                        
    fees by the investment manager, the ratio of expenses                                                          
    to average daily net assets would have been:                                     1.69%                1.69%               1.71%*

                                                                                                                  
<CAPTION>                                                                                                                   
                                                                                                                  
                                                                                                      Class 2     
                                                                                                   ------------                     

                                                                                Year ended           Year ended        Period Ended
                                                                                 12/31/96             12/31/95          12/31/94**
                                                                               -----------         ------------         ------------
<S>                                                                            <C>                 <C>                 <C> 
Net asset value, beginning of period                                           $    10.82          $      9.90         $     10.00
                                                                               -----------         ------------         ------------
Income (loss) from investment operations:                                                                         
  Net investment income                                                              0.60***              0.64                0.11
  Net realized and unrealized gain (loss) on investments                            (0.38)                1.19               (0.10)
                                                                               -----------         ------------         ------------
   Total income (loss) from investment operations                                    0.22                 1.83                0.01
                                                                               -----------         ------------         ------------
Less distributions to shareholders:                                                                               
  From net investment income                                                        (0.47)               (0.58)              (0.11)
  From net realized gains                                                           (0.06)               (0.33)                 --
                                                                               -----------         ------------         ------------
   Total distributions                                                              (0.53)               (0.91)              (0.11)
                                                                               -----------         ------------         ------------
Net asset value, end of period                                                 $    10.51          $     10.82         $      9.90
                                                                               ===========         ============         ============
Total Return                                                                         2.07%               18.51%               0.08%
Ratios / Supplemental Data:                                                                                       
  Net assets, end of period (000's)                                                  $122                 $120                $101
  Net expenses to average daily net assets#                                          1.10%                1.10%               1.10%*
  Net investment income to average daily net assets                                  5.67%                5.97%               6.46%*
  Portfolio turnover rate                                                              54%                 104%                  7%
   #Computed after giving effect to the reduction in                                                              
     management fee by MassMutual. Without this reduction of                                                        
     fees by the investment manager, the ratio of expenses                                                          
     to average daily net assets would have been:                                    1.14%                1.14%               1.16%*

</TABLE> 
*   Annualized
**  For the period from October 3, 1994 (commencement of operations) through
    December 31, 1994.
*** Per share amount calculated on the average shares method, which more
    appropriately presents the per share data for the period since the use of 
    the undistributed income method does not accord with the results of 
    operations.


   The accompanying notes are an integral part of the financial statesments.  27
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Core Bond Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                     Class 3
                                                                                                  ------------                 
                                                                               Year ended           Year ended     Period Ended
                                                                                12/31/96             12/31/95       12/31/94**
                                                                              -----------         ------------     ------------
<S>                                                                         <C>                <C>                <C> 
Net asset value, beginning of period                                          $    10.82          $      9.90      $     10.00
                                                                              -----------         ------------     ------------
Income (loss) from investment operations:                                                                        
  Net investment income                                                             0.64***              0.68             0.11
  Net realized and unrealized gain (loss) on investments                           (0.37)                1.19            (0.10)
                                                                              -----------         ------------     ------------
   Total income (loss) from investment operations                                   0.27                 1.87             0.01
                                                                              -----------         ------------     ------------
Less distributions to shareholders:                                                                              
  From net investment income                                                       (0.51)               (0.62)           (0.11)
  From net realized gains                                                          (0.06)               (0.33)              --
                                                                              -----------         ------------     ------------
   Total distributions                                                             (0.57)               (0.95)           (0.11)
                                                                              -----------         ------------     ------------
Net asset value, end of period                                                $    10.52          $     10.82      $      9.90
                                                                              ===========         ============     ============
Total Return                                                                        2.52%               18.87%            0.09%
Ratios / Supplemental Data:                                                                                      
  Net assets, end of period (000's)                                                 $123                 $120             $101
  Net expenses to average daily net assets#                                         0.75%                0.75%            0.75%*
  Net investment income to average daily net assets                                 6.01%                6.32%            6.83%* 
  Portfolio turnover rate                                                             54%                 104%               7%
   #Computed after giving effect to the reduction in                                                             
   management fee by MassMutual. Without this reduction of                                                       
   fees by the investment manager, the ratio of expenses                                                         
   to average daily net assets would have been:                                     0.79%                0.79%            0.81%* 
                                                                                                                 
<CAPTION>                                                                                                        
                                                                                                     Class 4     
                                                                                                  ------------                 
                                                                               Year ended           Year ended     Period Ended
                                                                                12/31/96             12/31/95       12/31/94**
                                                                              -----------         ------------     ------------
Net asset value, beginning of period                                          $    10.75          $      9.84      $     10.00
                                                                              -----------         ------------     ------------
Income (loss) from investment operations:                                                                        
  Net investment income                                                             0.67***              0.72***          0.18
  Net realized and unrealized gain (loss) on investments                           (0.37)                1.17            (0.16)
                                                                              -----------         ------------     ------------
   Total income (loss) from investment operations                                   0.30                 1.89             0.02
                                                                              -----------         ------------     ------------
Less distributions to shareholders:                                                                              
  From net investment income                                                       (0.54)               (0.65)           (0.18)
  From net realized gains                                                          (0.06)               (0.33)              --
                                                                              -----------         ------------     ------------
   Total distributions                                                             (0.60)               (0.98)           (0.18)
                                                                              -----------         ------------     ------------
Net asset value, end of period                                                $    10.45          $     10.75      $      9.84
                                                                              ===========         ============     ============
Total Return/@/                                                                     2.80%               19.15%            0.20%
Ratios / Supplemental Data:                                                                                      
  Net assets, end of period (000's)                                             $356,699             $253,540         $194,150
  Net expenses to average daily net assets#                                       0.5130%              0.5130%          0.5130%* 
  Net investment income to average daily net assets                                 6.26%                6.56%            6.86%* 
  Portfolio turnover rate                                                             54%                 104%               7%
   #Computed after giving effect to the reduction in                                                             
   management fee by MassMutual. Without this reduction of                                                       
   fees by the investment manager, the ratio of expenses                                                         
   to average daily net assets would have been:                                   0.5550%              0.5553%          0.5672%*
</TABLE> 
/*/Annualized
/**/For the period from October 3, 1994 (commencement of operations) through
    December 31, 1994.
/***/Per share amount calculated on the average shares method, which more
     appropriately presents the per share data for the period since the use of
     the undistributed income method does not accord with the results of
     operations.
/@/Employee retirement benefit plans that invest plan assets in the Separate
   Investment Accounts (SIAs) may be subject to certain charges as set forth in
   their respective Plan Documents. Total return figures would be lower for the
   periods presented if they reflected these charges.

28 The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Portfolio Manager Report
- --------------------------------------------------------------------------------

What are the investment objective and policies for the MassMutual Balanced Fund?

The objective and policies of the Fund are to:
 . achieve high total rate of return over the long term consistent with the
  preservation of capital
 . invest in equity securities, fixed-income securities and money market
  instruments
 . manage the allocation of investments in three sectors within the following
  ranges:

10%-45% Prime Sector
10%-25% Core Bond Sector
45%-65% Value Equity Sector

How did the Fund perform over the past year?

We're very pleased with the Fund's performance. With 50% of net assets invested
in stocks, we participated in the strong performance of the equity market over
the period. But with 16% of net assets invested in bonds and the remaining 34%
in cash and short-term fixed income investments, we were able to do so with far
less risk than pure stock investments.

What types of stocks worked best over the period?

The stocks of the large, well-established companies we tend to own performed
best over the year, and that was a benefit. Within the portfolio, some of our
top performers were financial services, capital spending, technology and drug
stocks. Many of our bank stocks did well due to strong profits and ongoing
consolidations. Capital spending stocks were also strong. We owned a full
position in GE, which was one of our best performers, up approximately 40
percent for the year. And though we tend to be underweighted in technology
stocks since few have the reasonable valuations and dividend records we require,
we added to our position in IBM over the course of the year, and that benefited
us.

On the whole, our stock strategy remained consistent over the past year. We
maintained a well-diversified portfolio of what we considered the best stocks
across numerous industries rather than making investments based on current
economic forecasts. We worked to buy good value wherever we found it in the
market, and we sold stocks that we felt had become risky, reaching what we'd
targeted as peaks for their performance cycles.

What was the bond strategy during the year?

The bond portfolio turned in a positive performance for the year, but it fell
far short of the returns generated by stocks. The investment grade fixed income
market had a somewhat difficult year due primarily to two factors. First,
interest rates rose slightly, and that negatively impacted price performance.
Second, a high level of volatility resulting from continuously changing economic
expectations colored the market and investor emotion throughout the year. Our
strategy inside this uneasy environment was to remain diversified between
Treasuries, mortgage-backed securities, asset-backed securities, and corporate
bonds, searching for opportunities to add value over time. This, plus
maintaining a duration of approximately five years, kept our performance closely
in line with our benchmark, the Lehman Brothers Government/Corporate Bond Index.

What changes, if any, are being made to the portfolio?

As always, we are constantly looking for compelling opportunities in both the
stock and bond markets. Outside of that, however, our plan barring any
unforeseen world economic or political events is to keep the portfolio
allocations near their current positions. Both our Value Equity and Core Bond
portions have risen since mid-year -- stocks due to their appreciation, and
bonds because we were able to buy into value -- but they are still slightly
below our neutral positions for both markets. At this allocation, we believe we
are positioned to capture most of the markets' potential returns while keeping a
tight rein on risk.

What is the outlook for the Fund?

We continue to expect that the coming year will be more typical than 1996 or
1995 was for both markets. The economy remains healthy, corporate America is
efficient and competitive, and even after the sixth year of economic expansion,
there are very few signs suggesting inflation is on the rise. As a result, we
believe stocks will have another positive year, but after an impressive two-year
run, one that is more in line with the market's long-term history. In the bond
market, without seeing a need for the Federal Reserve to aggressively tighten
money supply, we expect a better year than last, with income the major component
driving returns. Since it is under historically "normal" conditions like these
that this portfolio typically performs best, our outlook is quite favorable.

                                                                              29
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Portfolio Manager Report (Continued)
- --------------------------------------------------------------------------------

            [CHART OF GROWTH OF A $10,000 INVESTMENT APPEARS HERE]

<TABLE> 
<S>          <C>        <C>       <C>      <C>       <C> 
"10/3/94"     10000     10000     10000     10000     10000
"12/94"       10000     10017     10028     10029      9880
"6/95"        11086     11124     11158     11179     11203
"12/95"       11992     12070     12132     12164     12306
"6/96"        12544     12656     12741     12788     12860
"12/96"       13391     13548     13662     13725     13960
</TABLE> 

             [PIE CHART OF MASSMUTUAL BALANCED FUND APPEARS HERE]

                            MassMutual Balanced Fund
                        Largest Stock Holdings (12/31/96)

Bristol-Myers Squibb Company
General Electric Company
Pfizer, Incorporated
Hewlett-Packard Company
AMP, Incorporated
Amoco Corporation
SAFECO Corporation
Goodyear Tire & Rubber Company
The Bank of New York Company,
 Incorporated
Marsh & McLennan Companies, Inc.

30
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Portfolio of Investments
- --------------------------------------------------------------------------------

Portfolio of Investments
December 31, 1996

<TABLE> 
<CAPTION> 

                       Number of
                         Shares     Market Value
                         ------     ------------
<S>                     <C>        <C> 
EQUITIES -- 50.2%
Aerospace & Defense -- 0.9%
Boeing Company             27,000  $  2,872,125
Raytheon Company            1,200        57,750
TRW, Inc.                  48,200     2,385,900
                                   ------------
                                      5,315,775
                                   ------------

Agribusiness -- 0.6%
Pioneer Hi-Bred
 International, Inc.       45,500     3,185,000
                                   ------------

Apparel, Textiles & Shoes -- 0.5%
VF Corporation             44,500     3,003,750
                                   ------------

Automotive & Parts -- 2.4%
Ford Motor Company         97,300     3,101,438
Genuine Parts
 Company                  103,000     4,583,500
Goodyear Tire &
 Rubber Company           113,700     5,841,338
                                   ------------
                                     13,526,276
                                   ------------

Banking, Savings & Loans -- 3.2%
The Bank of New
 York Company,
 Incorporated             170,000     5,737,500
Comerica, Incorporated     41,500     2,173,563
CoreStates Financial
 Corp.                     81,500     4,227,813
Norwest Corporation        57,000     2,479,500
Wachovia Corp.             60,100     3,395,650
                                   ------------
                                     18,014,026
                                   ------------

Beverages -- 1.0%
Brown-Forman
 Corporation (Class B)     66,600     3,046,950
Pepsico, Inc.              84,000     2,457,000
                                   ------------
                                      5,503,950
                                   ------------

Chemicals -- 2.0%
E. I. du Pont de
 Nemours and Company       33,000     3,114,375
The Lubrizol
 Corporation               63,300     1,962,300
Nalco Chemical
 Company                   81,500     2,944,188
Rohm & Haas
 Company                   39,000     3,183,375
                                   ------------
                                     11,204,238
                                   ------------

Communications -- 0.6%
AT & T Corporation         84,000     3,654,000
                                   ------------

Computers & Office Equipment -- 3.7%
Hewlett-Packard
 Company                  122,000     6,130,500
International Business
 Machines Corporation      35,000     5,285,000
Pitney Bowes, Inc.         84,000     4,578,000
Xerox Corporation          90,000     4,736,250
                                   ------------
                                     20,729,750
                                   ------------

Containers -- 0.6%
Temple-Inland, Inc.        63,000     3,409,875
                                   ------------

Cosmetics & Personal Care -- 0.8%
Kimberly-Clark
 Corporation               48,400     4,610,100
                                   ------------

Drugs -- 0.6%
Pharmacia & Upjohn,
 Inc.                      85,000     3,368,125
                                   ------------

Electric Utilities -- 0.6%
NIPSCO Industries,
 Inc.                      40,000     1,585,000
SCANA Corporation          75,000     2,006,250
                                   ------------
                                      3,591,250
                                   ------------

Electrical Equipment & Electronics -- 3.8%
AMP, Incorporated         156,700     6,013,363
General Electric
 Company                   82,000     8,107,750
Honeywell Inc.             44,000     2,893,000
Hubbell, Incorporated
 (Class B)                 96,023     4,152,986
                                   ------------
                                     21,167,099
                                   ------------

Energy -- 4.3%
Amoco Corporation          74,000     5,957,000
Atlantic Richfield
 Company                   20,300     2,689,750
Chevron Corporation        70,500     4,582,500
Kerr-McGee
 Corporation               43,500     3,132,000
Mobil Corporation          35,000     4,278,750
Teco Energy, Inc.          57,000     1,375,125
Unocal Corporation         68,900     2,799,063
                                   ------------
                                     24,814,188
                                   ------------

Financial Services -- 0.8%
American Express
 Company                   76,500     4,322,250

Foods -- 1.4%
ConAgra, Inc.              62,200     3,094,450
CPC International, Inc.    61,000     4,727,500
                                   ------------
                                      7,821,950
                                   ------------

Forest Products & Paper -- 1.3%
Westvaco Corporation      101,500     2,918,125
Weyerhaeuser Company       90,400     4,282,700
                                   ------------
                                      7,200,825
                                   ------------

Hardware & Tools -- 0.6%
The Stanley Works         123,000     3,321,000
                                   ------------

Healthcare -- 4.4%
Becton, Dickinson and
 Company                  102,000     4,424,250
Bristol-Myers Squibb
 Company                   89,000     9,678,750
Pfizer, Incorporated       74,000     6,132,750
Schering-Plough Corp.      69,800     4,519,550
                                   ------------
                                     24,755,300
                                   ------------

Industrial Distribution -- 0.7%
W.W. Grainger, Inc.        48,000     3,852,000
                                   ------------

Industrial Transportation -- 0.7%
Norfolk Southern
 Corporation               48,000     4,200,000
                                   ------------
</TABLE> 

                                                                     (Continued)

   The accompanying notes are an integral part of the financial statements.   31
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Portfolio of Investments (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                       Number of
                         Shares     Market Value
                         ------     ------------
<S>                     <C>        <C> 
Insurance -- 4.0%
Allstate Corporation       36,544  $  2,114,984
Jefferson-Pilot
 Corporation               39,750     2,250,844
Marsh & McLennan
 Companies, Inc.           55,000     5,720,000
MBIA, Inc.                 51,500     5,214,375
SAFECO Corporation        149,000     5,876,188
Unitrin, Inc.              28,500     1,588,875
                                   ------------
                                     22,765,266
                                   ------------

Machinery & Components -- 0.9%
Dover Corporation          62,000     3,115,500
Parker-Hannifin
 Corporation               48,000     1,860,000
                                   ------------
                                      4,975,500
                                   ------------

Miscellaneous -- 1.4%
Harsco Corporation         34,500     2,363,250
Minnesota Mining &
 Manufacturing
 Company                   68,000     5,635,500
                                   ------------
                                      7,998,750
                                   ------------

Oil & Gas -- 1.0%
Occidental Petroleum
 Corporation              128,500     3,003,688
Union Pacific
 Resources Group Inc.      89,500     2,617,875
                                   ------------
                                      5,621,563
                                   ------------

Photography -- 0.7%
Eastman Kodak
 Company                   49,300     3,956,325
                                   ------------

Publishing & Printing -- 1.1%
The McGraw-Hill
 Companies, Inc.           89,000     4,105,125
R.R. Donnelley & Sons
 Company                   75,500     2,368,813
                                   ------------
                                      6,473,938
                                   ------------

Retail -- 1.0%
The May Department
 Stores Company            70,500     3,295,875
Sears Roebuck and Co.      48,000     2,214,000
                                   ------------
                                      5,509,875
                                   ------------

Retail-Grocery -- 1.0%
Albertson's, Inc.         119,000     4,239,375
American Stores
 Company                   31,900     1,303,913
                                   ------------
                                      5,543,288
                                   ------------

Telecommunications -- 0.5%
GTE Corporation            57,000     2,593,500
                                   ------------

Telephone Utilities -- 1.5%
Ameritech Corporation      44,500     2,697,813
Frontier Corporation      134,500     3,043,063
Southern New England
 Telecommunications
 Corporation               66,000     2,565,750
                                   ------------
                                      8,306,626
                                   ------------

Tobacco -- 1.6%
American Brands, Inc.      88,500     4,391,813
UST Inc.                  135,000     4,370,625
                                   ------------
                                      8,762,438
                                   ------------

TOTAL EQUITIES                      283,077,796
                                   ------------
(Cost $198,917,229)

                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                     <C>          <C> 
BONDS & NOTES -- 15.9%
ASSET BACKED SECURITIES -- 1.5%
Capita Equipment
 Receivables Trust
 1996-1, Class A4
 6.280% 6/15/2000      $1,000,000  $  1,001,560
Chase Manhattan Auto
 Grantor Trust 1996-B,
 Class A
 6.610% 9/15/2002       2,286,319     2,302,026
Daimler-Benz Auto
 Grantor Trust 1995-A,
 Class A
 5.850% 5/15/2002       1,113,462     1,112,761
Daimler-Benz Vehicle
 Trust 1994-A
 5.950% 12/15/2000        147,249       147,386
Ford Credit 1994-B
 Grantor Trust
 7.300% 10/15/1999        357,498       361,520
Ford Credit Auto
 Owner Trust 1996-B,
 Class A-4
 6.300% 1/15/2001       1,000,000     1,003,990
Nissan Auto
 Receivables 1994-A
 Grantor Trust, Class A
 6.450% 9/15/1999         438,841       439,939
Railcar Trust No.
 1992-1
 7.750% 6/01/2004         398,805       416,751
World Omni 1996-A
 Automobile Lease
 Securitization Trust,
 Class A1
 6.300% 6/25/2002       1,500,000     1,505,145
                                   ------------

TOTAL ASSET BACKED
SECURITIES                            8,291,078
                                   ------------
(Cost $8,269,339)

CORPORATE DEBT -- 5.6%
AirTouch
 Communications, Inc.
 7.500% 7/15/2006       1,000,000     1,026,480
America West Airlines
 1996-1, Class A
 6.850% 7/02/2009       1,000,000       980,000
American Airlines, 
Inc. (D) 
 9.780% 11/26/2011      1,000,000     1,138,750
AMR Corporation (D)
 9.000% 8/01/2012         500,000       565,970
Analog Devices, Inc.
 6.625% 3/01/2000         500,000       493,650
Associates Corporation
 of North America
 6.750% 8/01/2001       1,000,000     1,003,670
Bell Atlantic Financial
 Services, Inc. (D)
 6.610% 2/04/2000       1,000,000     1,006,210
BHP Finance (USA)
 Limited
 6.420% 3/01/2026       1,000,000       989,910
Cardinal Distribution,
 Inc.
 8.000% 3/01/1997         500,000       501,565
Champion International
 Corporation
 6.400% 2/15/2026       1,000,000       954,690
The Charles Schwab
 Corporation
 6.250% 1/23/2003       1,000,000       963,750
CITGO Petroleum
 Corporation
 7.875% 5/15/2006         250,000       254,900
Continental Airlines,
 Inc., Series 1996-2B
 8.560% 7/02/2014         499,897       544,263
Continental Airlines,
 Inc., Series 1996-B
 7.820% 10/15/2013        500,000       516,850
Delta Air Lines, Inc.
 8.540% 1/02/2007         437,643       465,066
English China Clays
 Delaware Inc. (D)
 7.375% 10/01/2002        500,000       513,880
ERAC USA Finance
 Company 144A
 6.950% 1/15/2006         500,000       491,875
FBG Finance Ltd.
 144A
 7.875% 6/01/2016       1,000,000     1,016,610
Fletcher Challenge Ltd.
 7.750% 6/20/2006         500,000       518,525
General American
 Transportation
 Corporation
 6.750% 3/01/2006       1,000,000       971,900
</TABLE> 
                                                                     (Continued)

32 The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Portfolio of Investments (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                     <C>          <C> 
The Goldman Sachs
 Group, L.P. 144A
 6.200% 2/15/2001      $1,000,000  $    980,000
GTE Corporation
 9.100% 6/01/2003         500,000       557,745
Leucadia National
 Corporation
 7.750% 8/15/2013       1,000,000       988,570
Lockheed Martin
 Corporation
 7.700% 6/15/2008       1,000,000     1,046,230
McDonnell Douglas
 Corporation
 6.875% 11/01/2006        500,000       490,630
McDonnell Douglas
 Corporation  (D) 
 9.250% 4/01/2002         500,000       558,450
Newmont Mining
 Corporation  (D)
 8.625% 4/01/2002       1,000,000     1,055,690
News America
 Holdings Incorporated
 9.250% 2/01/2013       1,000,000     1,120,290
Norfolk Southern
 Corporation
 7.220% 9/15/2006         850,000       866,031
Norfolk Southern
 Corporation
 7.400% 9/15/2006       1,000,000     1,015,570
North Finance
 (Bermuda) Limited
 144A
 7.000% 9/15/2005       1,000,000       985,000
Pearson Inc. 144A
 7.375% 9/15/2006         500,000       502,150
Polaroid Corporation
 7.250% 1/15/1997       1,000,000     1,000,220
Rite Aid Corporation
 6.700% 12/15/2001        500,000       499,045
Rolls-Royce Capital
 Inc.
 7.125% 7/29/2003       1,000,000     1,001,490
Scholastic Corporation
 7.000% 12/15/2003      1,000,000       998,070
Thomas & Betts
 Corporation
 8.250% 1/15/2004         500,000       519,565
Time Warner Inc.
 7.750% 6/15/2005       1,000,000     1,005,930
US Air, Inc.
 7.500% 10/15/2009        487,019       491,889
W.R. Grace & Co.
 8.000% 8/15/2004       1,000,000     1,058,720
                                   ------------

TOTAL CORPORATE DEBT                 31,659,799
                                   ------------
(Cost $30,638,759)

<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                     <C>          <C> 
U.S. GOVERNMENT AGENCY
OBLIGATIONS -- 4.4%
Federal Home Loan Mortgage Corporation (FHLMC) -- 0.9%
Collateralized Mortgage Obligations -- 0.8%
FHLMC Series 1322
 Class G
 7.500% 2/15/2007      $1,000,000  $  1,024,060
FHLMC Series 1625
 Class D
 5.250% 7/15/2004       3,100,000     3,067,047
FHLMC Series 1625
 Class EA
 5.750% 3/15/2007       1,000,000       981,870
                                   ------------
                                      5,072,977
                                   ------------

Pass-Through Securities -- 0.1%
FHLMC
 9.000% 3/01/2017         184,306       196,112
                                   ------------
                                      5,269,089
                                   ------------

Federal National Mortgage Association
(FNMA) -- 1.0%
Collateralized Mortgage Obligations -- 0.9%
FNMA Series 1993-134
 Class GA
 6.500% 2/25/2007       1,000,000       992,810
FNMA Series 1993-191
 Class PD
 5.400% 3/25/2004       1,000,000       991,560
FNMA Series 1993-221
 Class D
 6.000% 12/25/2008      1,000,000       956,250
FNMA Series 1996-54
 Class C
 6.000% 9/25/2008       2,000,000     1,920,000
                                   ------------
                                      4,860,620
                                   ------------

Pass-Through Securities -- 0.1%
FNMA
 8.000% 5/01/2013         555,094       571,180
                                   ------------
                                      5,431,800
                                   ------------

Government National Mortgage Association (GNMA) -- 1.4%
Pass-Through Securities
GNMA
 6.000% 12/20/2025        464,993       475,530
GNMA
 7.000% 7/20/2025       1,837,048     1,876,085
GNMA
 7.500% 10/15/2006 -
          6/15/2017     3,020,543     3,054,435

<CAPTION> 
                        Principal
                         Amount     Market Value
                         ------     ------------
<S>                     <C>          <C> 
GNMA
 8.000% 11/15/2004 -
          7/15/2008    $1,863,588  $  1,925,887
GNMA
 9.000% 12/15/2008 -
          5/15/2009       607,143       646,796
                                   ------------
                                      7,978,733
                                   ------------

U.S. Government Guaranteed Notes -- 1.1%
1991-A Fairfax
 County, VA
 8.740% 8/01/2001         200,000       216,374
1991-A Jefferson
 Park, CA
 8.740% 8/01/2001       1,740,000     1,882,454
1991-A Monroe
 County, NY
 8.740% 8/01/2001         500,000       540,935
1991-A Rochester, NY
 8.740% 8/01/2001          60,000        64,912
U.S. Dept. of Housing
 and Urban
 Development, Series
 1995-A  (D)
 8.240% 8/01/2002       3,000,000     3,255,060
                                   ------------
                                      5,959,735
                                   ------------

TOTAL U.S. GOVERNMENT
AGENCY OBLIGATIONS                   24,639,357
                                   ------------
(Cost $23,963,711)

U.S. TREASURY OBLIGATIONS -- 4.4%
U.S. Treasury Bonds -- 2.7%
U.S. Treasury Bond
 7.250% 5/15/2016       5,250,000     5,543,685
U.S. Treasury Bond
 8.750% 5/15/2017       8,250,000    10,066,320
                                   ------------
                                     15,610,005
                                   ------------

U.S. Treasury Notes -- 1.3%
U.S. Treasury Note
 6.125% 3/31/1998       3,700,000     3,717,908
U.S. Treasury Note
 7.125% 2/29/2000       3,300,000     3,397,449
                                   ------------
                                      7,115,357
                                   ------------

U.S. Treasury Strip -- 0.4%
U.S. Treasury Strip -- Principal Only
 0.000% 2/15/1999       2,250,000     1,988,910

TOTAL U.S. TREASURY
OBLIGATIONS                          24,714,272
                                   ------------
(Cost $24,499,494)

TOTAL BONDS & NOTES                  89,304,506
                                   ------------
(Cost $87,371,303)
</TABLE> 
                                                                     (Continued)

   The accompanying notes are an integral part of the financial statements.   33
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Portfolio of Investments (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                                    Principal
                                      Amount     Market Value
                                      ------     ------------
<S>                                 <C>          <C> 
SHORT-TERM INVESTMENTS -- 30.2%
Commercial Paper
Burlington Northern
 Santa Fe Corp.
 5.500% 1/21/1997                   $ 7,090,000   $  7,068,336
Burlington Northern
 Santa Fe Corp.
 5.970% 1/03/1997                     4,290,000      4,288,577
Carter Holt Harvey
 Limited
 5.500% 1/23/1997                     3,750,000      3,737,396
Central and South
 West Corporation
 5.520% 1/14/1997                     3,140,000      3,133,741
Central and South
 West Corporation
 5.620% 2/07/1997                     3,470,000      3,449,957
Central and South
 West Corporation
 5.630% 1/17/1997                     5,550,000      5,536,113
Comdisco, Inc.
 5.520% 1/15/1997                     2,790,000      2,784,011
Comdisco, Inc.
 5.820% 1/29/1997                     5,530,000      5,504,968
ConAgra, Inc.
 5.490% 2/04/1997                     4,135,000      4,113,560
Cox Enterprises, Inc.
 5.470% 2/28/1997                     3,000,000      2,973,562
Cox Enterprises, Inc.
 5.480% 2/05/1997                     2,680,000      2,665,722
Cox Enterprises, Inc.
 5.500% 2/13/1997                     6,170,000      6,129,467
Crown Cork & Seal
 Company Inc.
 5.800% 2/11/1997                     4,000,000      3,973,578
CSX Corporation
 5.800% 2/20/1997                     5,990,000      5,941,747
Dana Credit
 Corporation
 5.460% 1/02/1997                     4,320,000      4,319,345
Dana Credit
 Corporation
 5.530% 1/31/1997                     2,635,000      2,622,857
Dominion Resources,
 Inc.
 5.470% 1/22/1997                     4,300,000      4,286,279
Dominion Resources,
 Inc.
 5.520% 1/27/1997                     5,915,000      5,891,419
Dominion Resources,
 Inc.
 5.520% 1/28/1997                     3,335,000      3,321,193
ORIX Credit Alliance,
 Inc.
 5.490% 2/03/1997                     3,685,000      3,666,455
ORIX Credit Alliance,
 Inc.
 5.520% 1/08/1997                     2,230,000      2,227,606
ORIX Credit Alliance,
 Inc.
 5.620% 1/14/1997                       170,000        169,655
ORIX Credit Alliance,
 Inc.
 5.800% 1/06/1997                     5,335,000      5,330,702
ORIX Credit Alliance,
 Inc.
 5.850% 3/03/1997                     3,750,000      3,714,417
ORIX Credit Alliance,
 Inc.
 6.020% 2/27/1997                     2,285,000      2,263,220
Praxair, Inc.
 5.650% 2/21/1997                     3,435,000      3,407,506
Public Service
 Company of Colorado
 5.470% 1/17/1997                     2,355,000      2,349,275
Public Service
 Company of Colorado
 5.800% 2/25/1997                     4,200,000      4,162,783
Public Service
 Electric and Gas
 Company
 5.470% 1/10/1997                     3,955,000      3,949,592
Public Service
 Electric and Gas
 Company
 5.470% 1/24/1997                     2,360,000      2,351,753
Public Service
 Electric and Gas
 Company
 5.490% 1/13/1997                     3,655,000      3,648,311
Public Service
 Electric and Gas
 Company
 5.570% 2/06/1997                     5,655,000      5,623,502
Rayonier Inc.
 5.540% 1/07/1997                     3,000,000      2,997,230
Rite Aid Corporation
 5.600% 3/04/1997                     4,900,000      4,852,742
Sonat Inc.
 5.650% 1/09/1997                     5,030,000      5,023,685
Texas Utilities
 Electric Co.
 5.590% 2/14/1997                     4,500,000      4,469,255
Texas Utilities
 Electric Co.
 5.600% 2/10/1997                     3,800,000      3,776,356
Textron Financial
 Corporation
 5.500% 1/16/1997                     1,642,000      1,638,237
Textron Financial
 Corporation
 5.500% 2/18/1997                     3,000,000      2,978,000
Textron Financial
 Corporation
 5.560% 2/12/1997                     2,800,000      2,781,837
Union Pacific
 Corporation
 5.650% 1/30/1997                     2,920,000      2,906,710
Union Pacific
 Corporation
 5.800% 2/24/1997                     2,550,000      2,527,815
UOP
 5.600% 1/31/1997                     3,255,000      3,239,810
UOP
 5.620% 2/26/1997                     4,635,000      4,594,478
UOP
 5.750% 2/19/1997                     4,125,000      4,092,716
                                                 =============

TOTAL SHORT-TERM
INVESTMENTS                                        170,485,476
                                                 =============
(Cost $170,483,887)

TOTAL INVESTMENTS -- 96.3%                         542,867,778
 Cost $456,772,419) 

Other Assets/
(Liabilities) - 3.7%                                20,818,070
                                                  ============

NET ASSETS-- 100.0%                               $563,685,848
                                                  ============
</TABLE> 

Notes to Portfolio of Investments 
+Aggregate cost for Federal tax purposes (Note 7)

144A: Securities exempt from registration under Rule 144A of the Securities Act
      of 1933. These securities may be resold in transactions exempt from
      registration, normally to qualified institutional buyers.

 . All or a portion of this security is segregated to cover forward purchase
  commitments. (Note 2).

34  The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- -------------------------------------------------------------------------------
MassMutual Balanced Fund - Financial Statements
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                                 December 31, 1996
                                                                                                -------------------
<S>                                                                                             <C>
Statement of
Assets and     Assets:
Liabilities         Investments, at value (cost $286,288,532) (Note 2).......................   $       372,382,302
                    Short-term investments, at value (cost $170,483,887) (Note 2)............           170,485,476
                                                                                                -------------------
                      Total Investments......................................................           542,867,778
                    Cash.....................................................................                 1,546
                    Receivables from:
                      Investments sold.......................................................               246,752
                      Fund shares sold.......................................................            19,719,860
                      Interest and dividends.................................................             1,898,035
                      Investment manager (Note 3)............................................                22,488
                                                                                                -------------------
                        Total assets.........................................................           564,756,459
                                                                                                -------------------

               Liabilities:
                    Payables for:
                      Investments purchased..................................................                87,044
                      Settlement of investments purchased on a
                        forward commitment basis (Note 2)....................................                 2,411
                      Fund shares redeemed...................................................               702,735
                      Directors' fees and expenses (Note 3)..................................                 5,176
                      Affiliates (Note 3):
                        Investment management fees...........................................               213,324
                        Administration fees..................................................                40,525
                        Service and distribution fees........................................                   266
                    Accrued expenses and other liabilities...................................                19,130
                                                                                                -------------------
                        Total liabilities....................................................             1,070,611
                                                                                                -------------------
                    Net assets...............................................................   $       563,685,848
                                                                                                ===================

               Net assets consist of:
                    Paid-in capital..........................................................   $       475,645,805
                    Undistributed net investment income......................................                26,102
                    Accumulated net realized gain on investments.............................             1,920,993
                    Net unrealized appreciation on investments
                        and forward commitments..............................................            86,092,948
                                                                                                -------------------
                                                                                                $       563,685,848
                                                                                                ===================

               Net assets:
                    Class 1..................................................................   $           133,821
                                                                                                ===================
                    Class 2..................................................................   $           135,418
                                                                                                ===================
                    Class 3..................................................................   $           136,218
                                                                                                ===================
                    Class 4..................................................................   $       563,280,391
                                                                                                ===================

               Shares outstanding:
                    Class 1..................................................................                10,838
                                                                                                ===================
                    Class 2..................................................................                10,948
                                                                                                ===================
                    Class 3..................................................................                10,994
                                                                                                ===================
                    Class 4..................................................................            45,632,444
                                                                                                ===================

               Net asset value, offering price and
               redemption price per share:
                    Class 1..................................................................   $             12.35
                                                                                                ===================
                    Class 2..................................................................   $             12.37
                                                                                                ===================
                    Class 3..................................................................   $             12.39
                                                                                                ===================
                    Class 4..................................................................   $             12.34
                                                                                                ===================
</TABLE>


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

                                                                              35
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                                     Year ended
                                                                                                  December 31, 1996
                                                                                                -------------------
<S>                                                                                             <C>
Statement of
Operations     Investment income:
                    Interest.................................................................   $        15,133,862
                    Dividends................................................................             6,800,485
                                                                                                -------------------
                      Total investment income................................................            21,934,347
                                                                                                -------------------
               Expenses (Note 1):
                    Investment management fees (Note 3)......................................             2,271,174
                    Custody fees.............................................................                53,996
                    Audit and legal fees.....................................................                16,737
                    Directors' fees (Note 3).................................................                15,247
                    Fees waived by the investment manager (Note 3)...........................              (203,071)
                                                                                                -------------------
                                                                                                          2,154,083
                    Administration fees (Note 3):
                      Class 1................................................................                   794
                      Class 2................................................................                   661
                      Class 3................................................................                   412
                      Class 4................................................................               429,674
                    Distribution and service fees (Note 3):
                      Class 1................................................................                   903
                      Class 2................................................................                   191
                                                                                                -------------------
                        Net expenses.........................................................             2,586,718
                                                                                                -------------------
                        Net investment income................................................            19,347,629
                                                                                                -------------------

               Realized and unrealized gain (loss):
                    Net realized gain on investment transactions and forward commitments.....             8,885,806
                    Net change in unrealized appreciation (depreciation) on
                      investments and forward commitments....................................            33,108,845
                                                                                                -------------------
                        Net realized and unrealized gain.....................................            41,994,651
                                                                                                -------------------
                     Net increase in net assets resulting from operations....................   $        61,342,280
                                                                                                ===================
</TABLE>

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

36
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                               Year ended             Year ended
                                                                                           December 31, 1996      December 31, 1995
                                                                                          -------------------    ------------------
<S>                                                                                      <C>                     <C>
Statements of
Changes in Net  Increase(Decrease) in Net Assets:
Assets          Operations:
                    Net investment income............................................     $        19,347,629    $       16,724,229
                    Net realized gain on investment transactions
                     and forward commitments.........................................               8,885,806             4,359,989
                    Net change in unrealized appreciation (depreciation) on
                     investments and forward commitments.............................              33,108,845            55,498,858
                                                                                          -------------------    ------------------
                     Net increase in net assets resulting from operations............              61,342,280            76,583,076
                                                                                          -------------------    ------------------
               Distributions to shareholders (Note 2):
                    From net investment income:
                    Class 1..........................................................                  (3,204)               (4,846)
                    Class 2..........................................................                  (4,068)               (3,751)
                    Class 3..........................................................                  (4,538)               (4,120)
                    Class 4..........................................................             (19,441,756)          (16,528,781)
                                                                                          -------------------    ------------------
                     Total distributions from net investment income..................             (19,453,566)          (16,541,498)
                                                                                          -------------------    ------------------
                    From net realized gains:
                    Class 1..........................................................                  (1,969)               (1,239)
                    Class 2..........................................................                  (1,970)                 (859)
                    Class 3..........................................................                  (1,972)                 (857)
                    Class 4..........................................................              (7,883,759)           (3,230,318)
                                                                                          -------------------    ------------------
                     Total distributions from net realized gains.....................              (7,889,670)           (3,233,273)
                                                                                          -------------------    ------------------
               Net fund share transactions (Note 5):
                    Class 1..........................................................                 (49,367)               55,401
                    Class 2..........................................................                   6,038                 4,610
                    Class 3..........................................................                   6,510                 4,977
                    Class 4..........................................................              72,536,092            50,326,522
                                                                                          -------------------    ------------------
                     Increase in net assets from net fund share transactions.........              72,499,273            50,391,510
                                                                                          -------------------    ------------------
                    Total increase in net assets.....................................             106,498,317           107,199,815
               Net assets:
                    Beginning of period..............................................             457,187,531           349,987,716
                                                                                          -------------------    ------------------
                    End of period (including undistributed net investment income
                      of $26,102 and $179,574, respectively).........................     $       563,685,848    $      457,187,531
                                                                                          ===================    ==================
</TABLE>

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

                                                                              37
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                     Class 1
                                                                                                   ------------
                                                                               Year ended           Year ended         Period Ended
                                                                                12/31/96             12/31/95           12/31/94**
                                                                              -----------         ------------         ------------
<S>                                                                           <C>                 <C>                  <C> 
Net asset value, beginning of period                                          $    11.50          $      9.94          $     10.00
                                                                              -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                             0.34                 0.28                 0.06
  Net realized and unrealized gain (loss) on investments                            1.01                 1.70                (0.06)
                                                                              -----------         ------------         ------------
  Total income (loss) from investment operations                                    1.35                 1.98                   --
                                                                              -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                       (0.31)               (0.33)               (0.06)
  From net realized gains                                                          (0.19)               (0.09)                  --
                                                                              -----------         ------------         ------------
    Total distributions                                                            (0.50)               (0.42)               (0.06)
                                                                              -----------         ------------         ------------
Net asset value, end of period                                                $    12.35          $     11.50          $      9.94
                                                                              ===========         ============         ============
Total Return                                                                      11.67%               19.92%                0.00%
Ratios / Supplemental Data:
Net assets, end of period (000's)                                                   $134                 $173                 $100
  Net expenses to average daily net assets#                                        1.65%                1.65%               1.65%*
  Net investment income to average daily net assets                                2.71%                3.03%               3.39%*
  Portfolio turnover rate                                                            26%                  23%                   2%
  Average broker commission rate (a)                                          $    .0594                  N/A                  N/A
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                                   1.69%                1.69%               1.71%*


<CAPTION> 
                                                                                                     Class 2
                                                                                                    __________
                                                                               Year ended           Year ended         Period Ended
                                                                                12/31/96             12/31/95           12/31/94**
                                                                              -----------         ------------         ------------
<S>                                                                           <C>                 <C>                  <C> 
Net asset value, beginning of period                                          $    11.53          $      9.95          $     10.00
                                                                              -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                             0.39                 0.39                 0.06
  Net realized and unrealized gain (loss) on investments                            1.03                 1.65                (0.04)
                                                                              -----------         ------------         ------------
   Total income (loss) from investment operations                                   1.42                 2.04                 0.02
                                                                              -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                       (0.39)               (0.37)               (0.07)
  From net realized gains                                                          (0.19)               (0.09)                   --
                                                                              -----------         ------------         ------------
   Total distributions                                                             (0.58)               (0.46)               (0.07)
                                                                              -----------         ------------         ------------
Net asset value, end of period                                                $    12.37          $     11.53          $      9.95
                                                                              ===========         ============         ============
Total Return                                                                       12.25%               20.50%                0.17%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                                 $135                 $121                 $100
  Net expenses to average daily net assets#                                         1.10%                1.10%                1.10%*

  Net investment income to average daily net assets                                 3.23%                3.60%                3.94%*

  Portfolio turnover rate                                                             26%                  23%                   2%
  Average broker commission rate (a)                                          $    .0594                  N/A                  N/A
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                                    1.14%                1.14%                1.16%*

</TABLE> 

*Annualized
**For the period from October 3, 1994 (commencement of operations) through
  December 31, 1994.
(a)Average commission rate paid is computed by dividing the total amount of
   commissions paid during the fiscal year by the total number of shares
   purchased and sold during the fiscal year for which commissions were charged.
   For fiscal years beginning on or after September 1, 1995, a Fund is required
   to disclose its average commission rate per share for security trades on
   which commissions are charged.

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

38
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Balanced Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights

(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                  Class 3
                                                                                               ------------         
                                                                            Year ended           Year ended         Period Ended
                                                                             12/31/96             12/31/95           12/31/94**
                                                                           -----------         ------------         ------------
<S>                                                                        <C>                 <C>                  <C> 
Net asset value, beginning of period                                       $    11.55          $      9.96          $     10.00
                                                                           -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                          0.44                 0.43                 0.07
  Net realized and unrealized gain (loss) on investments                         1.02                 1.66                (0.04)
                                                                           -----------         ------------         ------------
   Total income (loss) from investment operations                                1.46                 2.09                 0.03
                                                                           -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                    (0.43)               (0.41)               (0.07)
  From net realized gains                                                       (0.19)               (0.09)                   --
                                                                           -----------         ------------         ------------
   Total distributions                                                          (0.62)               (0.50)               (0.07)
                                                                           -----------         ------------         ------------
Net asset value, end of period                                             $    12.39          $     11.55          $      9.96
                                                                           ===========         ============         ============
Total Return                                                                    12.61%               20.96%                0.28%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                              $136                 $121                 $100
  Net expenses to average daily net assets#                                      0.75%                0.75%                0.75%*
  Net investment income to average daily net assets                              3.60%                3.94%                4.32%*
  Portfolio turnover rate                                                          26%                  23%                   2%
  Average broker commission rate (a)                                       $    .0594                  N/A                   N/A
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                                0.79%                0.79%               0.81%*

<CAPTION> 
                                                                                                  Class 4
                                                                                               ------------         
                                                                            Year ended           Year ended         Period Ended
                                                                             12/31/96             12/31/95           12/31/94**
                                                                           -----------         ------------         ------------
<S>                                                                        <C>                 <C>                  <C> 
Net asset value, beginning of period                                       $    11.51          $      9.92          $     10.00
                                                                           -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                          0.46                 0.44                 0.11
  Net realized and unrealized gain (loss) on investments                         1.02                 1.68                (0.08)
                                                                           -----------         ------------         ------------
   Total income (loss) from investment operations                                1.48                 2.12                 0.03
                                                                           -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                    (0.46)               (0.44)               (0.11)
  From net realized gains                                                       (0.19)               (0.09)                   --
                                                                           -----------         ------------         ------------
   Total distributions                                                          (0.65)               (0.53)               (0.11)
                                                                           -----------         ------------         ------------
Net asset value, end of period                                             $    12.34          $     11.51          $      9.92
                                                                           ===========         ============         ============
Total Return@                                                                   12.83%               21.31%                0.29%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                          $563,280             $456,773             $349,688
  Net expenses to average daily net assets#                                    0.5120%              0.5120%              0.5120%*
  Net investment income to average daily net assets                              3.83%                4.18%                4.29%*
  Portfolio turnover rate                                                          26%                  23%                   2%
  Average broker commission rate (a)                                       $    .0594                  N/A                  N/A
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                               0.5522%              0.5514%              0.5650%*
</TABLE> 

*Annualized
**  For the period from October 3, 1994 (commencement of operations) through
    December 31, 1994.
@   Employee retirement benefit plans that invest plan assets in the Separate
    Investment Accounts (SIAs) may be subject to certain charges as set forth in
    their respective Plan Documents. Total return figures would be lower for the
    periods presented if they reflected these charges.
(a) Average commission rate paid is computed by dividing the total amount of
    commissions paid during the fiscal year by the total number of shares
    purchased and sold during the fiscal year for which commissions were
    charged. For fiscal years beginning on or after September 1, 1995, a Fund is
    required to disclose its average commission rate per share for security
    trades on which commissions are charged.

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

                                                                              39
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Value Equity Fund - Portfolio Manager Report
- --------------------------------------------------------------------------------

What are the investment objective and policies for the MassMutual Value Equity
Fund?

The objective and policies of the Fund are to:                                 
 . achieve long-term growth of capital and income                               
 . invest primarily in a diversified portfolio of equity securities of larger,  
  well established companies (market capitalization over $2.0 billion)
 . utilize a value-oriented, risk-averse strategy in making investment decisions
 . utilize fundamental analysis to identify companies which                     
  - are of high investment quality     
  - offer above-average dividend growth
  - are attractively valued            
                             
How has the Fund performed over the past year?
                             
The Fund performed well in 1996. The Fund's conservative construction caused it
to lag behind the market some what for the full year, but its pattern of
performance was consistent with its low risk strategy. The Fund participated in
the continuing advance of stock prices, and in those few months when the market
paused, the Fund retained its value better than the stock market overall. With
the market now entering the seventh year since the most recent bull market
began, we believe that this strategy of maintaining relatively low portfolio
risk will be beneficial to the Fund in future periods.

What was the strategy over the past year's strong, but volatile market?

Our strategy remained consistent over the past year. We maintained a
well-diversified portfolio by following our investment decision process of stock
selection one-by-one. We find stocks through fundamental analysis, a 'bottom up
approach' to researching a company. We believe this approach is less risky and
wiser than making investments based on less reliable economic forecasts.

What types of stocks performed best over the year?

The Fund's results benefited from strong performance by several of the largest
holdings, such as Bristol Myers, General Electric, and Pfizer. The financial
holdings were outstanding performers, particularly the banks. Contributing to
bank stock gains were an accommodative Fed policy, continued good loan loss
experience, and the relentless trend toward industry consolidation.

Were there any investments that didn't perform as expected?

The telephone industry was a disappointment last year. The major factor here was
the telecommunications deregulation bill which was signed into law in the spring
of 1996. This provides for the eventual opening up of the industry to
competition, and as companies prepare for this, increased marketing spending
will restrain earnings growth. Early in 1996, the Fund had a relatively small
commitment to this industry, but we steadily increased its weighting during the
year as we found companies with competitive advantages which were undervalued
relative to the market. In the long run, the surviving companies will prosper
due to strong growth of telecommunications traffic.

What changes, if any, are being made to the portfolio?

As the economic expansion is aging, and valuations are clearly on the high side,
we are trying to minimize risk in the portfolio. We are reducing holdings whose
prices are full, and adding to stocks that we feel are currently underpriced and
can offer good long-term return through a combination of capital appreciation
and current income. In fact, well positioned electric utilities appear
attractive for the first time in a considerable period, and we are modestly
increasing our commitment there.

What is the outlook for the Fund?

We are optimistic about the long term outlook for stocks in general and the Fund
in particular. After a long period of exceptional stock market returns such as
we have seen, a pause in the market's up trend would not be a surprise. However,
the Fund is structured recognizing that there are risks in equity investing as
well as returns, and the conservative nature of the Fund is intended to help the
Fund hold up well in any weakness which might take place. We believe that by
participating in the gains of a rising market and conserving asset value in a
less positive environment, the Fund should show superior returns over the long
term.

40
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Value Equity Fund - Portfolio Manager Report (Continued)
- --------------------------------------------------------------------------------

                         
       -------------------------------------------------------------------
        Growth of a $10,000 Investment

        Hypothetical Investments in MassMutual Value Equity
        Fund Classes 1-4 and the Standard & Poor's 500
        Composite Index

       -------------------------------------------------------------------
        MassMutual Value Equity Fund

        Total Return            One Year                Average Annual
                                1/1/96 - 12/31/96       10/3/94 - 12/31/96

        Class 1                      18.83%                  21.16%
        Class 2                      19.46%                  21.83%
        Class 3                      19.92%                  22.26%
        Class 4                      20.24%                  22.56%
       -------------------------------------------------------------------
        Standard & Poor's            22.97%                  26.31%
        500 Composite Index
       -------------------------------------------------------------------

        Past performance is not predictive of future results. The
        investment return and principal value of shares of the fund will
        fluctuate with market conditions so that shares of the Fund,
        when redeemed, may be worth more or less than their original
        cost. Investors should note that the Fund is a professionally
        managed mutual fund, while the Standard & Poor's 500 Composite
        Index is unmanaged and does not incur expenses.

       -------------------------------------------------------------------

       -------------------------------------------------------------------


                GROWTH OF A $10,000 INVESTMENT SINCE INCEPTION

                             [GRAPH APPEARS HERE]

<TABLE> 
<CAPTION> 
<S>           <C>             <C>             <C>             <C>           <C> 
                Class 1         Class 2         Class 3         Class 4     S&P 500 Index

"10/3/94"       10,000          10,000          10,000          10,000          10,000

"12/94"          9,961           9,978           9,982           9,990           9,998             

" 6/95"         11,507          11,566          11,590          11,613          12,019             

"12/95"         12,959          13,052          13,106          13,141          13,756             

" 6/96"         13,995          14,135          14,213          14,276          15,144             

"12/96"         15,399          15,591          15,716          15,802          16,915             
- -------------------------------------------------------------------------------------------
</TABLE> 
                          ---------------------------------------------------
                                       MassMutual Value Equity Fund           
                                     Largest Stock Holdings (12/31/96)        
                          ---------------------------------------------------
                                                                              
                           Bristol-Myers Squibb Company                       
                           General Electric Company                           
                           Hewlett-Packard Company                            
                           Pfizer, Incorporated                               
                           AMP, Incorporated                                  
                           Amoco Corporation                                  
                           Goodyear Tire & Rubber Company                     
                           SAFECO Corporation                                 
                           The Bank of New York Company,                      
                            Incorporated                                      
                           Marsh & McLennan Companies, Inc.                   
                          ---------------------------------------------------

                                                                              41
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Value Equity Fund - Portfolio of Investments
- --------------------------------------------------------------------------------

Portfolio of Investments
December 31, 1996
<TABLE> 
<CAPTION> 
                               Number of
                                Shares      Market Value
                                ------      ------------
<S>                            <C>          <C> 
EQUITIES - 95.2%
Aerospace & Defense -- 1.8%
Boeing Company                   230,000    $ 24,466,250
Raytheon Company                  10,000         481,250
TRW, Inc.                        396,600      19,631,700
                                            ------------
                                              44,579,200
                                            ============
Agribusiness -- 1.1%
Pioneer Hi-Bred
 International, Inc.             385,000      26,950,000
                                            ------------
Apparel, Textiles & Shoes -- 1.0%
VF Corporation                   365,000      24,637,500
                                            ============
Automotive & Parts -- 4.7%
Ford Motor Company               945,300      30,131,438
Genuine Parts
 Company                         860,000      38,270,000
Goodyear Tire &
 Rubber Company                  955,000      49,063,125
                                            ------------
                                             117,464,563
                                            ============
Banking, Savings & Loans -- 6.1%
The Bank of New
 York Company,
 Incorporated                  1,440,000      48,600,000
Comerica, Incorporated           338,000      17,702,750
CoreStates Financial
 Corp.                           700,000      36,312,500
Norwest Corporation              485,000      21,097,500
Wachovia Corp.                   494,000      27,911,000
                                            ------------
                                             151,623,750
                                            ------------    
Beverages -- 1.9%
Brown-Forman
 Corporation (Class B)           575,000      26,306,250
Pepsico, Inc.                    700,000      20,475,000
                                            ------------
                                              46,781,250
                                            ============
Chemicals -- 3.7%
E. I. du Pont de
 Nemours and Company             275,000      25,953,125
The Lubrizol
 Corporation                     529,500      16,414,500
Nalco Chemical
 Company                         680,000      24,565,000
Rohm & Haas
 Company                         315,000      25,711,875
                                            ------------
                                              92,644,500
                                            ------------
Communications -- 1.2%
AT & T Corporation               700,000      30,450,000
                                            ============

Computers & Office Equipment -- 6.9%
Hewlett-Packard
 Company                       1,020,000      51,255,000
International Business
 Machines Corporation            291,000      43,941,000
Pitney Bowes, Inc.               700,000      38,150,000
Xerox Corporation                723,000      38,047,875
                                            ------------
                                             171,393,875
                                            ============
Containers -- 1.1%
Temple-Inland, Inc.              525,000      28,415,625
                                            ------------
Cosmetics & Personal Care -- 1.5%
Kimberly-Clark
 Corporation                     403,000      38,385,750
                                            ============
Drugs -- 1.2%
Pharmacia & Upjohn,
 Inc.                            725,000      28,728,125
                                            ============
Electric Utilities -- 1.2%
NIPSCO Industries,
 Inc.                            330,000      13,076,250
SCANA Corporation                625,000      16,718,750
                                            ============
                                              29,795,000
                                            ------------
Electrical Equipment & Electronics -- 7.0%
AMP, Incorporated              1,313,000      50,386,375
General Electric
 Company                         680,000      67,235,000
Honeywell Inc.                   365,000      23,998,750
Hubbell, Incorporated
 (Class B)                       800,071      34,603,088
                                            ============
                                             176,223,213
                                            ============
Energy -- 8.3%
Amoco Corporation                615,000      49,507,500
Atlantic Richfield
 Company                         168,000      22,260,000
Chevron Corporation              600,000      39,000,000
Kerr-McGee
 Corporation                     360,000      25,920,000
Mobil Corporation                290,000      35,452,500
Teco Energy, Inc.                487,700      11,765,763
Unocal Corporation               574,900      23,355,313
                                            ------------
                                             207,261,076
                                            ============
Financial Services -- 1.5%
American Express
 Company                         665,000      37,572,500
                                            ------------
Foods -- 2.5%
ConAgra, Inc.                    518,000      25,770,500
CPC International, Inc.          462,500      35,843,748
                                            ============
                                              61,614,248
                                            ============
Forest Products & Paper -- 2.5%
Westvaco Corporation             855,000      24,581,250
Weyerhaeuser Company             775,000      36,715,625
                                            ------------
                                              61,296,875
                                            ============
Hardware & Tools -- 1.1%
The Stanley Works              1,030,000      27,810,000
                                            ============
</TABLE> 
                                                                     (Continued)


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

42
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Value Equity Fund - Portfolio of Investments (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 
                                Number of
                                 Shares      Market Value
                                 ------      ------------
<S>                              <C>      <C> 
Healthcare -- 8.3%
Becton, Dickinson and
 Company                         850,000  $   36,868,750
Bristol-Myers Squibb
 Company                         750,000      81,562,500
Pfizer, Incorporated             610,000      50,553,750
Schering-Plough Corp.            565,600      36,622,600
                                          -------------- 
                                             205,607,600
                                          --------------
Industrial Distribution -- 1.3%
W.W. Grainger, Inc.              400,000      32,100,000
                                          --------------
Industrial Transportation -- 1.4%
Norfolk Southern
 Corporation                     400,000      35,000,000
                                          --------------
Insurance -- 7.7%
Allstate Corporation             305,921      17,705,178
Jefferson-Pilot
 Corporation                     345,000      19,535,625
Marsh & McLennan
 Companies, Inc.                 454,900      47,309,600
MBIA, Inc.                       435,000      44,043,750
SAFECO Corporation             1,240,000      48,902,500
Unitrin, Inc.                    234,950      13,098,463
                                          --------------
                                             190,595,116
                                          --------------
Machinery & Components -- 1.7%
Dover Corporation                540,000      27,135,000
Parker-Hannifin
 Corporation                     400,000      15,500,000
                                          --------------
                                              42,635,000
                                          --------------
Miscellaneous -- 2.7%
Harsco Corporation               300,000      20,550,000
Minnesota Mining &
 Manufacturing
 Company                         565,000      46,824,375
                                          --------------
                                              67,374,375
                                          --------------
Oil & Gas -- 1.9%
Occidental Petroleum
 Corporation                   1,067,000      24,941,125
Union Pacific
 Resources Group Inc.            729,700      21,343,725
                                          --------------
                                              46,284,850
                                          --------------
Photography -- 1.3%
Eastman Kodak
 Company                         413,600      33,191,400
                                          --------------
Publishing & Printing -- 2.2%
The McGraw-Hill
 Companies, Inc.                 740,000      34,132,500
R.R. Donnelley & Sons
 Company                         630,000      19,766,250
                                          --------------
                                              53,898,750
                                          --------------
Retail -- 1.9%
The May Department
 Stores Company                  600,000      28,050,000
Sears Roebuck and Co.            400,000      18,450,000
                                          --------------
                                              46,500,000
                                          --------------
Retail-Grocery -- 1.9%
Albertson's, Inc.              1,000,001      35,625,010
American Stores
 Company                         262,300      10,721,513
                                          --------------
                                              46,346,523
                                          --------------
Telecommunications -- 0.9%
GTE Corporation                  475,300      21,626,150
                                          --------------
Telephone Utilities -- 2.8%
Ameritech Corporation            372,000      22,552,500
Frontier Corporation           1,112,200      25,163,525
Southern New England
 Telecommunications
 Corporation                     555,000      21,575,625
                                          --------------
                                              69,291,650
                                          --------------
Tobacco -- 2.9%
American Brands, Inc.            735,000      36,474,375
UST Inc.                       1,111,000      35,968,625
                                          --------------
                                              72,443,000
                                          --------------

TOTAL EQUITIES                             2,366,521,464
(Cost $1,654,626,282)                     --------------

<CAPTION> 
                                Principal
                                 Amount      Market Value
                                 ------      ------------
<S>                            <C>        <C> 
SHORT-TERM INVESTMENTS -- 4.6%
Commercial Paper
AIG Funding Inc.
 5.280% 2/28/1997              5,668,000       5,619,784
CoreStates Capital
 Corporation
 5.270% 4/28/1997              2,000,000       1,963,600
E. I. du Pont de
 Nemours and Company
 5.250% 5/09/1997              5,000,000       4,900,444
E. I. du Pont de
 Nemours and Company
 5.250% 5/19/1997              9,000,000       8,806,800
First Union
 Corporation
 5.270% 4/23/1997              3,000,000       2,947,733
First Union
 Corporation
 5.280% 3/28/1997              5,000,000       4,933,111
Ford Motor Credit
 Company
 5.290% 3/10/1997             14,000,000      13,851,912
Heinz (H.J.) Company
 5.330% 1/21/1997              3,000,000       2,991,117
Heinz (H.J.) Company
 5.400% 1/21/1997              8,000,000       7,976,000
J. P. Morgan &
 Company Incorporated
 5.280% 2/03/1997             14,000,000      13,932,240
Shell Oil Company
 6.500% 1/02/1997              6,861,000       6,859,761
Sunoco Credit
 Corporation
 5.320% 2/04/1997              8,000,000       7,959,804
Sunoco Credit
 Corporation
 5.370% 1/21/1997              6,000,000       5,982,100
Transamerica
 Financial Corporation
 5.270% 3/14/1997              2,595,000       2,565,936
The Walt Disney
 Company
 5.320% 1/24/1997             10,000,000       9,966,011
Weyerhaeuser Company
 5.300% 2/10/1997              9,000,000       8,947,000
Weyerhaeuser Company
 5.300% 2/12/1997              4,000,000       3,975,267
                                          --------------

TOTAL SHORT-TERM
INVESTMENTS                                  114,178,620
(Cost $114,215,876)                       --------------

TOTAL INVESTMENTS -- 99.8%                 2,480,700,084
(Cost $1,768,842,158)+                     

Other Assets/
(Liabilities) - 0.2%                           5,508,151
                                          --------------  

NET ASSETS-- 100.0%                       $2,486,208,235
                                          --------------
</TABLE> 


Notes to Portfolio of Investments 
+Aggregate cost for Federal tax purposes (Note 7)



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

                                                                              43
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Value Equity Fund - Financial Statements
- --------------------------------------------------------------------------------
                                                               
Statement of Assets and Liabilities                            
<TABLE> 
<CAPTION> 
                                                               December 31, 1996
                                                               -----------------
<S>                                                            <C> 
Assets:                                                        
  Investments, at value (cost $1,654,626,282) (Note 2).....    $   2,366,521,464
  Short-term investments, at value (cost $114,215,876) (Note 2)      114,178,620
                                                               -----------------
    Total Investments......................................        2,480,700,084
  Cash.....................................................                  190
  Receivables from:                                             
    Investments sold.......................................            2,044,107
    Fund shares sold.......................................            1,696,480
    Interest and dividends.................................            5,329,158
    Investment manager (Note 3)............................              106,983
                                                               -----------------
      Total assets.........................................        2,489,877,002
                                                               -----------------
Liabilities:                                                    
  Payables for:                                                 
    Investments purchased..................................              481,850
    Fund shares redeemed...................................            1,916,768
    Directors' fees and expenses (Note 3)..................                5,176
    Affiliates (Note 3):                                        
      Investment management fees...........................              987,506
      Administration fees..................................              198,758
      Service and distribution fees........................                  303
  Accrued expenses and other liabilities...................               78,406
                                                               -----------------
      Total liabilities....................................            3,668,767
                                                               -----------------
  Net assets...............................................    $   2,486,208,235
                                                               =================
Net assets consist of:                                          
  Paid-in capital..........................................    $   1,759,761,092
  Undistributed net investment income......................              410,862
  Accumulated net realized gain on investments.............           14,178,355
  Net unrealized appreciation on investments...............          711,857,926
                                                               -----------------
                                                               $   2,486,208,235
                                                               =================
Net assets:                                                     
  Class 1..................................................    $         153,607
                                                               =================
  Class 2..................................................    $         155,446
                                                               =================
  Class 3..................................................    $         156,351
                                                               =================
  Class 4..................................................    $   2,485,742,831
                                                               =================
Shares outstanding:                                             
  Class 1..................................................               10,640
                                                               =================
  Class 2..................................................               10,740
                                                               =================
  Class 3..................................................               10,793
                                                               =================
  Class 4..................................................          171,928,663
                                                               =================
Net asset value, offering price and                             
redemption price per share:                                     
  Class 1..................................................    $           14.44
                                                               =================
  Class 2..................................................    $           14.47
                                                               =================
  Class 3..................................................    $           14.49
                                                               =================
  Class 4..................................................    $           14.46
                                                               =================
</TABLE> 

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

44
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Value Equity Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Statement of Operations
<TABLE> 
<CAPTION> 
                                                                      Year ended
                                                               December 31, 1996
                                                               -----------------
<S>                                                            <C> 
Investment income:
  Dividends................................................    $     56,941,194
  Interest.................................................          10,459,062
                                                               ----------------
    Total investment income................................          67,400,256
                                                               ----------------
Expenses (Note 1):                             
  Investment management fees (Note 3)......................          10,377,627
  Custody fees.............................................             205,814
  Audit and legal fees.....................................              77,183
  Directors' fees (Note 3).................................              15,195
  Fees waived by the investment manager (Note 3)...........          (1,077,667)
                                                               ----------------
                                                                      9,598,152
  Administration fees (Note 3):                 
    Class 1................................................                 814
    Class 2................................................                 751
    Class 3................................................                 474
    Class 4................................................           2,086,673
  Distribution and service fees (Note 3):       
    Class 1................................................                 911
    Class 2................................................                 212
                                                               ----------------
      Net expenses.........................................          11,687,987
                                                               ----------------
      Net investment income................................          55,712,269
                                                               ----------------
Realized and unrealized gain (loss):            
  Net realized gain on investment transactions.............          74,040,546
  Net change in unrealized appreciation (depreciation)
    on investments.........................................         296,454,766
                                                               ----------------
      Net realized and unrealized gain.....................         370,495,312
                                                               ----------------
  Net increase in net assets resulting from operations.....    $    426,207,581
                                                               ================
</TABLE> 

   The accompanying notes are an integral part of the financial statements.   45

                                                                              
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Value Equity Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
Statements of Changes in Net Assets 

<TABLE> 
<CAPTION> 
                                                                                   Year ended             Year ended
                                                                               December 31, 1996       December 31, 1995
                                                                               -----------------       -----------------
<S>                                                                            <C>                     <C> 
Increase (Decrease) in Net Assets:
Operations:
     Net investment income...........................................          $      55,712,269       $     50,082,342
     Net realized gain on investment transactions....................                 74,040,546             21,371,652
     Net change in unrealized appreciation (depreciation)
      on investments.................................................                296,454,766            429,724,511
                                                                               -----------------       ----------------
      Net increase in net assets resulting from operations...........                426,207,581            501,178,505
                                                                               -----------------       ----------------
Distributions to shareholders (Note 2):
     From net investment income:
     Class 1.........................................................                     (1,849)                (1,761)
     Class 2.........................................................                     (2,628)                (2,382)
     Class 3.........................................................                     (3,152)                (2,774)
     Class 4.........................................................                (55,920,646)           (49,597,273)
                                                                               -----------------       ---------------- 
      Total distributions from net investment income.................                (55,928,275)           (49,604,190)
                                                                               -----------------       ---------------- 
     From net realized gains:
     Class 1.........................................................                     (4,035)                  (990)
     Class 2.........................................................                     (4,054)                  (990)
     Class 3.........................................................                     (4,061)                  (988)
     Class 4.........................................................                (64,653,761)           (16,056,271)
                                                                               -----------------       ----------------
      Total distributions from net realized gains....................                (64,665,911)           (16,059,239)
                                                                               -----------------       ----------------
Net fund share transactions (Note 5):
     Class 1.........................................................                      5,884                  2,751
     Class 2.........................................................                      6,682                  3,372
     Class 3.........................................................                      7,213                  3,763
     Class 4.........................................................                 54,936,919            126,252,551
                                                                               -----------------       ----------------
      Increase in net assets from net fund share transactions........                 54,956,698            126,262,437
                                                                               -----------------       ----------------
     Total increase in net assets....................................                360,570,093            561,777,513
                                
Net assets:
     Beginning of period.............................................              2,125,638,142          1,563,860,629
                                                                               -----------------       ----------------
     End of period (including undistributed net investment income
      of $410,862 and $626,868, respectively)........................          $   2,486,208,235       $  2,125,638,142
                                                                               =================       ================
</TABLE> 

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


<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Value Equity Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                   Class 1
                                                                                                  ----------
                                                                             Year ended           Year ended         Period Ended
                                                                              12/31/96             12/31/95           12/31/94**
                                                                            ----------            ----------          ----------
<S>                                                                         <C>                   <C>                 <C> 
Net asset value, beginning of period                                        $    12.63            $     9.92          $    10.00
                                                                            ----------            ----------          ----------
Income (loss) from investment operations:
  Net investment income                                                           0.17                  0.18                0.04
  Net realized and unrealized gain (loss) on investments                          2.21                  2.81               (0.08)
                                                                            ----------            ----------          ----------
   Total income (loss) from investment operations                                 2.38                  2.99               (0.04)
                                                                            ----------            ----------          ----------
Less distributions to shareholders:
  From net investment income                                                     (0.18)                (0.18)              (0.04)
  From net realized gains                                                        (0.39)                (0.10)                 --
                                                                            ----------            ----------          ---------- 
   Total distributions                                                           (0.57)                (0.28)              (0.04)
                                                                            ----------            ----------          ----------
Net asset value, end of period                                              $    14.44            $    12.63          $     9.92
                                                                            ==========            ==========          ==========
Total Return                                                                     18.83%                30.10%              (0.39)%

Ratios / Supplemental Data:
  Net assets, end of period (000's)                                               $154                  $129                 $99
  Net expenses to average daily net assets#                                       1.65%                 1.65%               1.65%*
  Net investment income to average daily net assets                               1.28%                 1.58%               2.31%*
  Portfolio turnover rate                                                           13%                   16%                  3%
  Average broker commission rate (a)                                        $    .0585                   N/A                 N/A
   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                   1.69%                 1.70%               1.71%*

<CAPTION> 
                                                                                                   Class 2
                                                                                                  ----------
                                                                             Year ended           Year ended         Period Ended
                                                                              12/31/96             12/31/95           12/31/94**
                                                                            ----------            ----------          ----------
<S>                                                                         <C>                   <C>                 <C> 
Net asset value, beginning of period                                        $    12.65            $     9.93          $    10.00
                                                                            ----------            ----------          ----------
Income (loss) from investment operations:
  Net investment income                                                           0.25                  0.24                0.05
  Net realized and unrealized gain (loss) on investments                          2.22                  2.82               (0.07)
                                                                            ----------            ----------          ----------
   Total income (loss) from investment operations                                 2.47                  3.06               (0.02)
                                                                            ----------            ----------          ----------
Less distributions to shareholders:
  From net investment income                                                     (0.26)                (0.24)              (0.05)
  From net realized gains                                                        (0.39)                (0.10)                 --
                                                                            ----------            ----------          ----------
   Total distributions                                                           (0.65)                (0.34)              (0.05)
                                                                            ----------            ----------          ----------
Net asset value, end of period                                              $    14.47            $    12.65          $     9.93
                                                                            ==========            ==========          ==========
Total Return                                                                     19.46%                30.80%              (0.22)%

Ratios / Supplemental Data:
  Net assets, end of period (000's)                                               $155                  $130                 $99
  Net expenses to average daily net assets#                                       1.10%                 1.10%               1.10%*
  Net investment income to average daily net assets                               1.82%                 2.13%               2.86%*
  Portfolio turnover rate                                                           13%                   16%                  3%
  Average broker commission rate (a)                                        $    .0585                   N/A                 N/A
   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                   1.14%                 1.15%               1.16%*
</TABLE> 

*Annualized
**For the period from October 3, 1994 (commencement of operations) through
  December 31, 1994.
(a)Average commission rate paid is computed by dividing the total amount of
   commissions paid during the fiscal year by the total number of shares
   purchased and sold during the fiscal year for which commissions were charged.
   For fiscal years beginning on or after September 1, 1995, a Fund is required
   to disclose its average commission rate per share for security trades on
   which commissions are charged.

   The accompanying notes are an integral part of the financial statements.   47

                                                                                
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Value Equity Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                   Class 3
                                                                                                  ----------
                                                                            Year ended            Year ended         Period Ended
                                                                             12/31/96              12/31/95           12/31/94**
                                                                            ----------            ----------          ----------
<S>                                                                         <C>                   <C>                 <C> 
Net asset value, beginning of period                                        $    12.66            $     9.93          $    10.00
                                                                            ----------            ----------          ----------
Income (loss) from investment operations:
  Net investment income                                                           0.30                  0.28                0.05
  Net realized and unrealized gain (loss) on investments                          2.23                  2.83               (0.07)
                                                                            ----------            ----------          ----------
   Total income (loss) from investment operations                                 2.53                  3.11               (0.02)
                                                                            ----------            ----------          ----------
Less distributions to shareholders:
  From net investment income                                                     (0.31)                (0.28)              (0.05)
  From net realized gains                                                        (0.39)                (0.10)                 --
                                                                            ----------            ----------          ----------
   Total distributions                                                           (0.70)                (0.38)              (0.05)
                                                                            ----------            ----------          ----------
Net asset value, end of period                                              $    14.49            $    12.66          $     9.93
                                                                            ==========            ==========          ==========
Total Return                                                                     19.92%                31.30%              (0.18)%

Ratios / Supplemental Data:
  Net assets, end of period (000's)                                               $156                  $130                 $99
  Net expenses to average daily net assets#                                       0.75%                 0.75%               0.75%*
  Net investment income to average daily net assets                               2.17%                 2.48%               3.23%*
  Portfolio turnover rate                                                           13%                   16%                  3%
  Average broker commission rate (a)                                        $    .0585                   N/A                 N/A

   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                   0.80%                 0.80%               0.81%*

<CAPTION> 
                                                                                                   Class 4
                                                                                                  ----------
                                                                            Year ended            Year ended         Period Ended
                                                                             12/31/96              12/31/95           12/31/94**
                                                                            ----------            ----------          ----------
<S>                                                                         <C>                   <C>                 <C> 
Net asset value, beginning of period                                        $    12.63            $     9.91          $    10.00
                                                                            ----------            ----------          ----------
Income (loss) from investment operations:
  Net investment income                                                           0.34                  0.31                0.08
  Net realized and unrealized gain (loss) on investments                          2.22                  2.82               (0.09)
                                                                            ----------            ----------          ----------
   Total income (loss) from investment operations                                 2.56                  3.13               (0.01)
                                                                            ----------            ----------          ----------
Less distributions to shareholders:
  From net investment income                                                     (0.34)                (0.31)              (0.08)
  From net realized gains                                                        (0.39)                (0.10)                 --
                                                                            ----------            ----------          ----------
   Total distributions                                                           (0.73)                (0.41)              (0.08)
                                                                            ----------            ----------          ----------
Net asset value, end of period                                              $    14.46            $    12.63          $     9.91
                                                                            ==========            ==========          ==========
Total Return@                                                                    20.24%                31.54%              (0.10)%

Ratios / Supplemental Data:
  Net assets, end of period (000's)                                         $2,485,743            $2,125,248          $1,563,563
  Net expenses to average daily net assets#                                     0.5067%               0.5067%             0.5067%*
  Net investment income to average daily net assets                               2.42%                 2.72%               3.20%*
  Portfolio turnover rate                                                           13%                   16%                  3%
  Average broker commission rate (a)                                        $    .0585                   N/A                 N/A

   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                 0.5534%               0.5528%             0.5681%*
</TABLE> 

*Annualized
**For the period from October 3, 1994 (commencement of operations) through
  December 31, 1994.
@Employee retirement benefit plans that invest plan assets in the Separate
 Investment Accounts (SIAs) may be subject to certain charges as set forth in
 their respective Plan Documents. Total return figures would be lower for the
 periods presented if they reflected these charges.
(a)Average commission rate paid is computed by dividing the total amount of
   commissions paid during the fiscal year by the total number of shares
   purchased and sold during the fiscal year for which commissions were charged.
   For fiscal years beginning on or after September 1, 1995, a Fund is required
   to disclose its average commission rate per share for security trades on
   which commissions are charged.

48   The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Small Cap Value Equity - Portfolio Manager Report
- --------------------------------------------------------------------------------

What are the investment objective and policies for the MassMutual Small Cap 
Value Equity Fund?

The objective and policies of the Fund are to:
 . achieve long-term growth of capital and income
 . invest primarily in a diversified portfolio of equity securities of smaller
  companies (market capitalization less than $750 million)
 . utilize a value-oriented, risk-averse strategy in making investment decisions
 . utilize fundamental analysis to identify companies which
  - are of high investment quality or possess a unique product, market position
    or operating characteristic,
  - offer above-average level of profitability or superior growth potential and
  - are attractively valued

How has the Fund performed over the past year?

While smaller capitalization stocks generally lagged the broad market over the
course of the year, the portfolio performed very well on an absolute basis. It
not only more than doubled the long-term average for stocks, but also surpassed
the small-cap Russell 2000 Index's return of 16.5% and neared the much larger
S&P 500 Index's reported 23.0%.

What was the strategy over the year's strong, but volatile market?

Our strategy hasn't changed. We're still working to buy stocks of companies with
outstanding potential at reasonable prices. Volatility actually works to our
advantage especially in a high-priced market, in that investor emotion often
causes momentary dips in the prices of stocks that have appreciated
significantly. When this happens to companies we'd like to own, we view it as a
buying opportunity.

What stocks performed best for you over the year?

The best industry groups we invested in over the year were the banking and
finance sector and aerospace/defense firms. With rates generally declining,
banking enjoyed a profitable environment. Appreciation in the sector was further
fueled by continued merger and acquisition activity. First Colorado Bankshares,
United Carolina Bankshares and One Valley Bank were excellent holdings for us
over the year.

In the aerospace/defense field, 1996 saw companies engaged in large-scale
mergers and consolidations, as well as small acquisitions and spinoffs of
divisions. We think this cycle is nearing its end now, and that once completed,
several major companies will dominate the sector. As a participant in the year's
activities toward that end, the portfolio benefited significantly.

Although it is outside both areas, one of our best holdings over the period was
Apogee Enterprises, a glass technology and distribution firm. This is a company
that benefited from strong pricing in auto and new non-residential construction
glass, and its stock reflected it, appreciating over 130% for the year.

What changes, if any, are being made?

Technology stocks had an interesting year. They started out strong, suffered
some weakness over the summer, and then regained their robustness as the year
came to a close. While technology as a sector rarely exhibits either the
dividends or balance sheet strengths we prefer, we are currently evaluating
selected companies in what we'd call "related technologies" -- those that
provide critical services to the more visible technology outfits. Cognex is one
such company. They manufacture vision systems that are integrated into computer
chip production lines. The stock is selling well off of its high, and we think
it offers good value. Another example is Helix Technology. This company derives
an impressive cash flow from the manufacture of cryogenics systems used in chip
making. Because of the tech-related nature of its business, it is somewhat
removed from the threats of obsolescence that plague more primary technology
firms.

Most of our recent selling has been in the property and casualty insurance area.
By and large, these stocks performed well over the year. With some up in excess
of 40%, they added to our strong performance. However, at their current pricey
levels, we feel better opportunities for appreciation exist elsewhere.

What is the outlook for the portfolio?

We have a constructive outlook on the economy and the market, though we expect
we may see some first quarter 1997 slowing. Low inflationary pressures and a
reasonably good Christmas season keep the specter of a recession from becoming a
near-term concern. However, after a dramatic two year run, the U.S. stock market
isn't cheap. As a result, we wouldn't be surprised to find that most gains in
1997 to result from growth in earnings rather than in stock multiples. This
scenario suggests we're moving back into a "stock picker's market," where
opportunities will certainly exist, but where selectivity and research will make
all the difference. We believe our portfolio's regimented investment guidelines
will help us to be among the winners in such an environment.

                                                                              49
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Small Cap Value Equity - Portfolio Manager Report (Continued)
- --------------------------------------------------------------------------------



Growth of a $10,000 Investment
Hypothetical Investments in MassMutual Small Cap
Value Equity Fund Classes 1-4 and the Frank Russell
1000 Index
- --------------------------------------------------------------------------------
MassMutual Small Cap Value Equity Fund 
<TABLE> 
<CAPTION> 
Total Return                 One Year                Average Annual   
<S>                          <C>                     <C> 
Class 1                         21.43%                  16.07%
Class 2                         22.07%                  16.73%
Class 3                         22.64%                  17.15%
Class 4                         22.82%                  17.41%
- --------------------------------------------------------------------------------
Frank Russell                   16.50%                  18.62%
Index 
- --------------------------------------------------------------------------------
</TABLE> 
Past performance is not predictive of future results.  The investment return and
principal value of shares of the Fund will fluctuate with market conditions so 
that shares of the Fund, when redeemed may be worth more or less than their 
original cost.  Investors should note that the Fund is a professionally managed 
mutual fund, while the Frank Russell 2000 Index is unmanaged and does not incur 
expenses.

                GROWTH OF A $10,000 INVESTMENT SINCE INCEPTION


                           [LINE GRAPH APPEARS HERE]
<TABLE> 
<CAPTION> 

                Class 1         Class 2         Class 3         Class 4         Russel 2000
                -------         -------         --------        -------         -----------
<S>             <C>             <C>             <C>             <C>             <C> 
10/3/94         10,000           10,000          10,000          10,000           10,000
12/94            9,711            9,728           9,732           9,733            9,813
06/95           10,422           10,470          10,495          10,507           11,229
12/95           11,515           11,601          11,642          11,681           12,605
06/96           12,535           12,665          12,731          12,794           13,912
12/96           13,983           14,161          14,277          14,346           14,683

</TABLE> 


                                              Capital RE Corp.               
                                              McClatchy Newspapers, Inc.     
                                              ALLIED Group, Incorporated     
                                              Frontier Insurance Group, Inc. 
                                              Harte Hanks Communications, Inc.
                                              Belden, Inc.                   
                                              Astoria Financial Corporation  
                                              Dallas Semiconductor Corporation
                                              True North Communications, Inc.
                                              Graco, Incorporated             

50
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Small Cap Value Equity - Portfolio of Investments
- --------------------------------------------------------------------------------

Portfolio of Investments
December 31, 1996
<TABLE> 
<CAPTION> 
                                                 Number of    
                                                  Shares        Market Value
                                                  ------        ------------
<S>                                              <C>            <C> 
EQUITIES - 98.4%
Air Transportation -- 1.4%
Atlantic Southeast
 Airlines, Inc.                                    297,800      $  6,514,375
                                                                ------------ 
  
Apparel, Textiles & Shoes -- 1.2%
Unitog Company                                     206,500         5,627,125
                                                                ------------   
Automotive & Parts -- 5.7%
Amcast Industrial
 Corporation                                       228,100         5,645,475
Excel Industries, Inc.                             355,100         5,903,538
Myers Industries, Inc.                             321,154         5,419,469
Titan Wheel
 International, Inc.                               698,500         8,905,875
                                                                ------------ 
                                                                  25,874,357
                                                                ------------ 
Banking, Savings & Loans -- 10.9%
Astoria Financial
 Corporation                                       293,000        10,804,375
Bank United Corp.                                           
 Class A                                           173,200         4,633,100
CCB Financial                                               
 Corporation                                       139,900         9,548,175
First Colorado                                              
 Bancorp, Inc.                                     284,200         4,831,400
Keystone Financial,                                         
 Inc.                                              221,150         5,528,750
One Valley Bancorp of                                       
 West Virginia, Inc.                               183,750         6,821,719
Security Capital                                            
 Corporation                                       102,800         7,581,500
                                                                ------------ 
                                                                  49,749,019
                                                                ------------ 

Building Materials & Construction -- 0.7%
Apogee Enterprises,
 Inc.                                               76,800         3,052,800
                                                                ------------ 
Chemicals -- 1.1%                                          
OM Group, Inc.                                     188,100         5,078,700
                                                                ------------ 
Communications -- 2.3%                                     
True North                                                 
 Communications, Inc.                              483,500        10,576,563
                                                                ------------ 
Computers & Office Equipment -- 1.0%
Cognex Corporation. (D)                            238,500         4,412,250
                                                                ------------ 
Containers -- 1.7%
Rock-Tenn Company
 (Class A)                                         391,490         7,731,928
                                                                ------------ 
Electrical Equipment & Electronics -- 8.2%
Belden, Inc.                                       293,700        10,866,900
Dallas Semiconductor
 Corporation                                       468,600        10,777,800
Teleflex, Incorporated                             128,100         6,677,213
Wyle Laboratories                                  227,200         8,974,390
                                                                ------------ 
                                                                  37,296,303
                                                                ------------ 
Energy -- 3.2%
NGC Corporation                                    165,595         3,850,084
Production Operators                                        
 Corp.                                             156,100         7,258,650
TNP Enterprises, Inc.                              137,100         3,753,113
                                                                ------------ 
                                                                  14,861,847
                                                                ------------ 
Foods -- 3.2%
Midwest Grain
 Products, Inc. (D)                                167,100         2,840,700
Morrison Health Care,                                      
 Inc.                                              377,200         5,563,700
Riser Foods, Inc.                                          
 Class A                                           197,700         6,276,975
                                                                ------------ 
                                                                  14,681,375
                                                                ------------ 
Forest Products & Paper -- 2.4%
Mosinee Paper
 Corporation                                       125,833         4,467,072
Wausau Paper Mills                                         
 Company                                           357,775         6,618,838
                                                                ------------ 
                                                                  11,085,910
                                                                ------------ 
Gas Distribution -- 1.9%
WICOR, Inc.                                        237,300         8,513,138
                                                                ------------ 
Healthcare -- 1.0%                                         
Beckman Instruments,                                       
 Inc.                                              113,800         4,367,075
                                                                ------------  
Industrial Transportation -- 3.1%
ABC Rail Products
 Corporation . (D)                                 115,000      $  2,285,625
Arnold Industries, Inc.                            511,500         8,120,063
The Greenbrier                                            
 Companies, Inc.                                   385,300         3,997,488
                                                                ------------ 
                                                                  14,403,176
                                                                ------------ 

Insurance -- 11.7%
ALLIED Group,
 Incorporated                                      346,350        11,299,669
Capital RE Corp.                                   334,500        15,596,063
Executive Risk, Inc.                               172,900         6,397,300
Frontier Insurance                                         
 Group, Inc.                                       290,080        11,095,560
Orion Capital                                              
 Corporation                                       147,137         8,993,749
                                                                ------------ 
                                                                  53,382,341
                                                                ------------ 
Leasing Companies -- 2.0%
Rollins Truck Leasing
 Company                                           715,750         9,036,344
                                                                ------------ 
Machinery & Components -- 13.3%
Columbus McKinnon
 Corporation                                       266,500         4,164,063
DT Industries, Inc.                                269,200         9,422,000
The Gorman-Rupp                                           
 Company                                           257,825         3,512,866
Graco, Incorporated                                427,000        10,461,500
Greenfield Industries,                                    
 Inc.                                              327,600        10,032,750
Hardinge, Inc.                                     224,300         5,971,988
Helix Technology                                          
 Corporation                                       247,300         7,171,700
Regal-Beloit                                              
 Corporation                                       297,750         5,843,344
Roper Industries, Inc.                             109,200         4,272,450
                                                                ------------ 
                                                                  60,852,661
                                                                ------------ 
Metals & Mining -- 1.8%
Reliance Steel &
 Aluminum Company                                  229,600         8,036,000
                                                                ------------ 
</TABLE> 
    The accompanying notes are an integral part of the financial statement.

                                                                             

                                                                              51
<PAGE>
 
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MassMutual Small Cap Value Equity - Portfolio of Investments (Continued)
- -------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 

                                                 Number of 
                                                  Shares        Market Value
                                                 ---------      ------------
<S>                                              <C>            <C>         
Miscellaneous -- 2.1%                                         
Trimas Corporation                                407,100       $  9,719,513
                                                              
Miscellaneous Distributor Wholesale -- 1.2%                   
Hughes Supply, Inc.                               130,200          5,614,875
                                                              
Office Products -- 1.1%                                       
American Business                                             
 Products, Inc.                                   197,700          4,967,213
                                                              
Oil & Gas -- 2.9%                                             
The Houston                                                   
 Exploration Company.                             261,800          4,581,500
Stone Energy                                                  
 Corporation.                                     211,000          6,303,625
Titan Exploration, Inc.                           200,000          2,400,000
                                                                ------------ 
                                                                  13,285,125
                                                                ------------ 
Other Services -- 3.0%                                        
Analysts International                                        
 Corporation                                      340,200          9,610,650
Landauer, Inc.                                    173,900          4,260,550
                                                                ------------ 
                                                                  13,871,200
                                                                ------------ 
Publishing & Printing -- 8.4%                                 
Banta Corporation                                 284,250          6,502,219
Harte Hanks                                                   
 Communications, Inc.                             398,300         11,052,825
Houghton Mifflin                                              
 Company                                          173,200          9,807,450
McClatchy                                                     
 Newspapers, Inc.                                 327,400         11,459,000
                                                                ------------ 
                                                                  38,821,494
                                                                ------------ 
Retail -- 1.9%                                                
Arbor Drugs, Inc.                                 502,250          8,726,594
                                                                ------------ 

TOTAL EQUITIES                                                   450,139,301
                                                                ------------
(Cost $338,729,733)

<CAPTION> 

                                                 Principal
                                                  Amount        Market Value
                                                 ---------      ------------
<S>                                              <C>            <C> 
SHORT-TERM INVESTMENTS -- 1.4%
Commercial Paper
Ford Motor Credit
 Company
 5.330% 1/29/1997                              1,000,000            995,854
Shell Oil Company                                        
 6.500% 1/02/1997                              4,350,000          4,349,215
Sunoco Credit                                            
 Corporation                                             
 5.370% 1/21/1997                              1,000,000            997,017
                                                                -----------
TOTAL SHORT-TERM                                         
INVESTMENTS                                                       6,342,086
                                                                ----------- 
(At Amortized Cost)                                           

TOTAL INVESTMENTS -- 99.8%                                      456,481,387
(Cost $345,071,819)+

Other Assets/
(Liabilities)  - .2%                                                886,996
                                                                -----------

NET ASSETS--100.0%                                            $ 457,368,383
                                                               ------------ 

</TABLE> 

Notes to Portfolio of Investments 
+Aggregate cost for Federal tax purposes (Note 7)


(D) Non-income producing security.


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

52
<PAGE>
 
- -------------------------------------------------------------------------------
MassMutual Small Cap Value Equity - Financial Statements
- -------------------------------------------------------------------------------

Statement of  
Assets and   
Liabilities   

<TABLE> 
<CAPTION> 

                                                              December 31, 1996
                                                              ----------------- 
<S>                                                           <C> 
Assets:
     Investments, at value (cost $338,729,733) (Note 2).....  $    450,139,301
     Short-term investments, at amortized cost (Note 2).....         6,342,086
                                                              ----------------  
       Total Investments....................................       456,481,387
     Cash...................................................            16,575
     Receivables from:
       Investments sold.....................................           590,252
       Fund shares sold.....................................           391,223
       Interest and dividends...............................           614,637
       Investment manager (Note 3)..........................            20,289
                                                              ----------------  
         Total assets.......................................       458,114,363
                                                              ----------------  

Liabilities:
     Payables for:
       Investments purchased................................           124,059
       Fund shares redeemed.................................           349,247
       Directors' fees and expenses (Note 3)................             5,176
       Affiliates (Note 3):
         Investment management fees.........................           216,574
         Administration fees................................            34,087
         Service and distribution fees......................               274
     Accrued expenses and other liabilities.................            16,563
                                                              ----------------  
         Total liabilities..................................           745,980
                                                              ----------------  
     Net assets.............................................  $    457,368,383
                                                              ================  

Net assets consist of:
     Paid-in capital........................................  $    340,794,078
     Undistributed net investment income....................           192,363
     Accumulated net realized gain on investments...........         4,972,374
     Net unrealized appreciation on investments.............       111,409,568
                                                              ----------------  
                                                              $    457,368,383
                                                              ================  

Net assets:
     Class 1................................................  $        142,813
                                                              ================  
     Class 2................................................  $        144,545
                                                              ================  
     Class 3................................................  $        145,609
                                                              ================  
     Class 4................................................  $    456,935,416
                                                              ================  
Shares outstanding:
     Class 1................................................            10,666
                                                              ================  
     Class 2................................................            10,767
                                                              ================  
     Class 3................................................            10,837
                                                              ================  
     Class 4................................................        34,013,589
                                                              ================  

Net asset value, offering price and
redemption price per share:
     Class 1................................................  $          13.39
                                                              ================  
     Class 2................................................  $          13.42
                                                              ================  
     Class 3................................................  $          13.44
                                                              ================  
     Class 4................................................  $          13.43
                                                              ================  

</TABLE> 
    The accompanying notes are an integral part of the financial statement.

                                                                              53
<PAGE>
 
- -------------------------------------------------------------------------------
MassMutual Small Cap Value Equity - Financial Statements (Continued)
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>


                                                                  Year ended
                                                              December 31, 1996
                                                              -----------------
<S>                                                          <C>
Statement of Operations

Investment income:
     Dividends..............................................  $      10,401,752
     Interest...............................................          2,168,316
                                                              -----------------
       Total investment income..............................         12,570,068
                                                              -----------------

Expenses (Note 1):
     Investment management fees (Note 3)....................          2,298,488
     Custody fees...........................................             47,464
     Audit and legal fees...................................             14,282
     Directors' fees (Note 3)...............................             15,246
     Fees waived by the investment manager (Note 3).........           (182,305)
                                                              -----------------
                                                                      2,193,175
                                                              -----------------
     Administration fees (Note 3):
       Class 1..............................................                844
       Class 2..............................................                667
       Class 3..............................................                417
       Class 4..............................................            359,887
     Distribution and service fees (Note 3):
       Class 1..............................................                958
       Class 2..............................................                191
                                                              -----------------
         Net expenses.......................................          2,556,139
                                                              -----------------
        Net investment income...............................         10,013,929
                                                              -----------------

Realized and unrealized gain (loss):
     Net realized gain on investment transactions...........         15,188,213
     Net change in unrealized appreciation (depreciation) on
       investments..........................................         63,151,095
                                                              -----------------
        Net realized and unrealized gain....................         78,339,308
                                                              -----------------
     Net increase in net assets resulting from operations...  $      88,353,237
                                                              =================
</TABLE>

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

54
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Small Cap Value Equity - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Statements of                   
Changes in Net 
Assets

<TABLE>
<CAPTION>
                                                                                Year ended               Year ended
                                                                             December 31, 1996        December 31, 1995
                                                                             -----------------        -----------------
<S>                                                                         <C>                       <C>
Increase (Decrease) in Net Assets:
Operations:
     Net investment income.................................................  $      10,013,929        $      6,234,130
     Net realized gain on investment transactions..........................         15,188,213                 776,790
     Net change in unrealized appreciation (depreciation)
      on investments.......................................................         63,151,095              57,391,484
                                                                             -----------------        ----------------
      Net increase in net assets resulting from operations.................         88,353,237              64,402,404
                                                                             -----------------        ----------------

Distributions to shareholders (Note 2):
     From net investment income:
     Class 1...............................................................             (1,430)                 (1,356)
     Class 2...............................................................             (2,382)                 (1,300)
     Class 3...............................................................             (2,845)                 (1,672)
     Class 4...............................................................         (9,914,239)             (6,159,231)
                                                                             -----------------        ----------------
      Total distributions from net investment income.......................         (9,920,896)             (6,163,559)
                                                                             -----------------        ----------------
     From net realized gains:
     Class 1...............................................................             (3,230)                     --
     Class 2...............................................................             (3,240)                     --
     Class 3...............................................................             (3,251)                     --
     Class 4...............................................................        (10,172,978)                     --
                                                                             -----------------        ----------------
                                                                                   (10,182,699)                     --
                                                                             -----------------        ----------------
      Total distributions from net realized
      gains (10,182,699) -- Net fund share
      transactions (Note 5):
     Class 1...............................................................            (49,286)                  51,075
     Class 2...............................................................              5,622                    1,300
     Class 3...............................................................              6,096                    1,672
     Class 4...............................................................          8,348,780               11,428,353
      Increase in net assets from net fund share transactions..............          8,311,212               11,482,400
                                                                             -----------------        ----------------
     Total increase in net assets..........................................         76,560,854               69,721,245
                                                                             -----------------        ----------------

Net assets:
     Beginning of period...................................................        380,807,529              311,086,284
     End of period (including undistributed net investment income
      of $192,363 and $99,330, respectively)...............................  $     457,368,383        $     380,807,529
                                                                             =================        =================
</TABLE>

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

                                                                              55
<PAGE>

- --------------------------------------------------------------------------------
MassMutual Small Cap Value Equity - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights

(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
 
                                                                                                 Class 1
                                                                            Year ended           Year ended         Period Ended
                                                                             12/31/96             12/31/95           12/31/94**
                                                                           ----------          -----------          ----------- 
<S>                                                                        <C>                 <C>                  <C>       
Net asset value, beginning of period                                       $    11.40          $      9.69          $     10.00
                                                                           ----------          -----------          ----------- 
Income (loss) from investment operations:
  Net investment income                                                          0.21                 0.06                 0.02
  Net realized and unrealized gain (loss) on investments                         2.23                 1.74                (0.31)
                                                                           ----------          -----------          ----------- 
   Total income (loss) from investment operations                                2.44                 1.80                (0.29)
                                                                           ----------          -----------          ----------- 
Less distributions to shareholders:
  From net investment income                                                    (0.14)               (0.09)               (0.02)
  From net realized gains                                                       (0.31)                  --                   --
                                                                           ----------          -----------          ----------- 
   Total distributions                                                          (0.45)               (0.09)               (0.02)
                                                                           ----------          -----------          ----------- 
Net asset value, end of period                                             $    13.39          $     11.40          $      9.69
                                                                           ==========          ===========          =========== 
Total Return                                                                    21.43%               18.58%               (2.89)%

Ratios / Supplemental Data:
  Net assets, end of period (000's)                                              $143                 $172                  $99
  Net expenses to average daily net assets#                                      1.75%                1.75%                1.75%*
  Net investment income to average daily net assets                              1.56%                0.63%                1.14%*
  Portfolio turnover rate                                                          28%                  28%                   4%
  Average broker commission rate (a)                                       $    .0585                  N/A                  N/A
   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                  1.79%                1.79%               1.81%*

                                                                                                  Class 2
                                                                                               -----------          
                                                                            Year ended           Year ended         Period Ended
                                                                             12/31/96             12/31/95           12/31/94**
                                                                           ----------          -----------          ----------- 
Net asset value, beginning of period                                       $    11.44          $      9.70          $     10.00
                                                                           ----------          -----------          ----------- 
Income (loss) from investment operations:
  Net investment income                                                          0.22                 0.13                 0.03
  Net realized and unrealized gain (loss) on investments                         2.30                 1.74                (0.30)
                                                                           ----------          -----------          ----------- 
   Total income (loss) from investment operations                                2.52                 1.87                (0.27)
Less distributions to shareholders:
  From net investment income                                                    (0.23)               (0.13)               (0.03)
  From net realized gains                                                       (0.31)                  --                   --
                                                                           ----------          -----------          ----------- 
   Total distributions                                                          (0.54)               (0.13)               (0.03)
                                                                           ----------          -----------          ----------- 
Net asset value, end of period                                             $    13.42          $     11.44          $      9.70
                                                                           ==========          ===========          =========== 
Total Return                                                                    22.07%               19.25%               (2.72)%

Ratios / Supplemental Data:
  Net assets, end of period (000's)                                              $145                 $118                  $99
  Net expenses to average daily net assets#                                      1.20%                1.20%                1.20%*
  Net investment income to average daily net assets                              1.81%                1.19%                1.69%*
  Portfolio turnover rate                                                          28%                  28%                   4%
  Average broker commission rate (a)                                       $    .0585                  N/A                  N/A
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                                 1.24%               1.24%                1.26%*

</TABLE> 

*Annualized
**For the period from October 3, 1994 (commencement of operations) through
  December 31, 1994.
(a)Average commission rate paid is computed by dividing the total amount of
   commissions paid during the fiscal year by the total number of shares
   purchased and sold during the fiscal year for which commissions were charged.
   For fiscal years beginning on or after September 1, 1995, a Fund is required
   to disclose its average commission rate per share for security trades on
   which commissions are charged.

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

56
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual Small Cap Value Equity - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)
<TABLE> 
<CAPTION> 
                                                                                                  Class 3
                                                                                                 --------- 
                                                                            Year ended           Year ended         Period Ended
                                                                             12/31/96             12/31/95           12/31/94**
                                                                           -----------         ------------         ------------
<S>                                                                      <C>                 <C>                  <C> 
Net asset value, beginning of period                                       $    11.44          $      9.70          $     10.00
                                                                           -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                          0.27                 0.16                 0.03
  Net realized and unrealized gain (loss) on investments                         2.31                 1.74                (0.30)
                                                                           -----------         ------------         ------------
   Total income (loss) from investment operations                                2.58                 1.90                (0.27)
                                                                           -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                    (0.27)               (0.16)               (0.03)
  From net realized gains                                                       (0.31)                  --                   --
                                                                           -----------         ------------         ------------
   Total distributions                                                          (0.58)               (0.16)               (0.03)
                                                                           -----------         ------------         ------------
Net asset value, end of period                                             $    13.44          $     11.44          $      9.70
                                                                           ===========         ============         ============
Total Return                                                                    22.64%               19.62%               (2.68)%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                              $146                 $119                  $99
  Net expenses to average daily net assets#                                      0.85%                0.85%                0.85%*
  Net investment income to average daily net assets                              2.16%                1.54%                2.09%*
  Portfolio turnover rate                                                          28%                  28%                   4%
  Average broker commission rate (a)                                       $    .0585                  N/A                  N/A
   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                  0.89%                0.89%                0.91%*

<CAPTION> 

                                                                                                  Class 4
                                                                                                 ---------
                                                                            Year ended           Year ended         Period Ended
                                                                             12/31/96             12/31/95           12/31/94**
                                                                           -----------         ------------         ------------
Net asset value, beginning of period                                       $    11.44          $      9.69          $     10.00
                                                                           -----------         ------------         ------------
Income (loss) from investment operations:
  Net investment income                                                          0.31                 0.19                 0.04
  Net realized and unrealized gain (loss) on investments                         2.29                 1.75                (0.31)
                                                                           -----------         ------------         ------------
   Total income (loss) from investment operations                                2.60                 1.94                (0.27)
                                                                           -----------         ------------         ------------
Less distributions to shareholders:
  From net investment income                                                    (0.30)               (0.19)               (0.04)
  From net realized gains                                                       (0.31)                  --                   --
                                                                           -----------         ------------         ------------
   Total distributions                                                          (0.61)               (0.19)               (0.04)
                                                                           -----------         ------------         ------------
Net asset value, end of period                                             $    13.43          $     11.44          $      9.69
                                                                           ===========         ============         ============
Total Return@                                                                   22.82%               20.01%               (2.66)%
Ratios / Supplemental Data:
  Net assets, end of period (000's)                                          $456,935             $380,398             $310,789
  Net expenses to average daily net assets#                                    0.6110%              0.6110%              0.6110%*
  Net investment income to average daily net assets                              2.40%                1.78%                1.78%*
  Portfolio turnover rate                                                          28%                  28%                   4%
  Average broker commission rate (a)                                       $    .0585                  N/A                  N/A
   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                0.6546%              0.6553%              0.6681%*
</TABLE> 
*Annualized
**For the period from October 3, 1994 (commencement of operations) through
  December 31, 1994.
@Employee retirement benefit plans that invest plan assets in the Separate
 Investment Accounts (SIAs) may be subject to certain charges as set forth in
 their respective Plan Documents. Total return figures would be lower for the
 periods presented if they reflected these charges.
(a)Average commission rate paid is computed by dividing the total amount of
  commissions paid during the fiscal year by the total number of shares
  purchased and sold during the fiscal year for which commissions were charged.
  For fiscal years beginning on or after September 1, 1995, a Fund
  is required to disclose its average commission rate per share for security
  trades on which commissions are charged.

   The accompanying notes are an integral part of the financial statements.   57
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual International Equity Fund - Portfolio Manager Report
- --------------------------------------------------------------------------------

What are the investment objective and policies for the MassMutual International
Equity Fund?

The objective and policies of the Fund are to:
 . achieve high total rate of return over the long term
 . invest in a diversified portfolio of foreign and domestic equity securities
 . utilize dominant themes to guide investment decisions (economic, political and
  social influences that are expected to dictate long-term growth trends)

How has the portfolio performed over the year?

International markets lagged the U.S. over the year because of one main factor:
negative performance from Japan. Even though many world markets outperformed the
U.S. in dollar terms this year, Japan is the second largest world market. When
Japan suffers, it has an effect on most diversified international and global
portfolios -- especially indices and Index funds that aren't actively managed.
As hard as it is to avoid Japan completely in a fully-diversified investment
portfolio, over the past few years to do well in international markets has meant
to be vigilant and selective in terms of regional exposure. With that preface,
one of our moves was to actively limit our investment to the Japanese market. As
a result, our portfolio performed well, finishing in the top 20% of the 322
portfolios that make up the Lipper International Equity Average and surpassed
the 6.0% return of the Morgan Stanley Capital EAFE Index.

What countries or regions performed well?

Markets that performed better than the U.S. this year (as represented by the
23.0% return of the S&P 500) included the United Kingdom, Brazil, Indonesia,
Finland, Portugal, Malaysia, Canada, Sweden, Spain, Hong Kong, Ireland, the
Netherlands and Norway. This is part of why international diversification is so
important to a balanced investment portfolio. These are not just obscure,
developing markets -- and they outperformed the U.S. even in the second year of
its unusually impressive rally.

What were some of the global investment themes that worked best during the
period?

We found good companies within many of our themes. As a percentage of the
portfolio, Capital Markets Development was largest. Here our investments were in
banks -- often a very good way to play developing markets -- such as Standard
Chartered and HSBC Holdings, both of which are British firms serving Hong Kong
and the Far East. Next, our investments in luxury goods -- the Emerging Consumer
Markets theme -- were impressive. Consumer demand from developing Asia spurred
exceptional performance from stocks including LMVH, Gucci, Bulgari and Porsche.
In Efficiency Enhancing Technology, we did well with Dassault Electronics, a new
issue. Dassault is the leading CAD/CAM company worldwide, whose software helps
other companies bring new products to market quickly and inexpensively. Misys
and SGS Thompson were two other good stocks. The first markets financial
services software and the second designs and manufactures mixed signal
semiconductors. We've always liked the Healthcare theme, and some of our best
investments here were medical technology firms and the "second line"
pharmaceuticals companies. In Infrastructure, we focused primarily on equipment
companies. Within Natural Resources, we profited from oil services companies
like Trans-Ocean Drilling and Geophysique. The oil services sector has been on
the rebound from 15 years out of favor, and these two stocks in particular were
stellar performers. Finally, in Telecommunications, an area where we've been
highly selective, we were pleased with some of our media holdings and
"protected" telecommunications operators.

How is the portfolio being positioned for the coming year?

We continue to look for well-run, well-positioned companies in businesses with
excellent growth prospects. However, as an overlay, we also continue to be
cautious about our exposure to regions or economies that we believe have ongoing
difficulties, such as Japan and South Africa. In addition, we've been working to
concentrate the portfolio further in the names we really believe in. We've
reduced the total number of our holdings by over 20 stocks and have taken larger
positions in strong companies like Nintendo and Reinsurance of Australia.

What is the outlook for the Fund?

While there are still localized problem areas such as Japan, our outlook is
decidedly favorable. Many foreign markets have enjoyed a good run recently, but
in most cases it has not been either as long or as strong as the bull market in
domestic stocks. We think this, plus the fact that international companies are
rapidly becoming attuned to the needs of shareholders, will form a basis for
outperformance from the international markets going forward.

58
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual International Equity Fund - Portfolio Manager Report (Continued)
- --------------------------------------------------------------------------------

            [CHART OF GROWTH OF A $10,000 INVESTMENT APPEARS HERE]

<TABLE> 
<S>         <C>       <C>         <C>      <C>       <C> 
"10/3/94"     10000     10000     10000     10000     10000
"12/94"        9250      9260      9270      9280      9898
"6/95"         9420      9460      9480      9510     10155
"12/95"        9616      9679      9713      9756     11007
"6/96"        10513     10620     10667     10734     11504
"12/96"       11259     11406     11473     11562     11672
</TABLE> 
<TABLE> 
<CAPTION> 
                      MassMutual International Equity Fund
                      Largest Country Weightings (12/31/96)

                                      % of fund
<S>                                   <C> 
Japan                                    14.05%
United Kingdom                           12.83%
France                                   11.22%
Germany                                   9.99%
Switzerland                               8.50%
The Netherlands                           8.40%
Australia                                 4.47%
Hong Kong                                 3.65%
Norway                                    2.97%
Argentina                                 2.94%
</TABLE> 

                                                                              59
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual International Equity Fund - Portfolio of Investments
- --------------------------------------------------------------------------------

Portfolio of Investments
December 31, 1996

<TABLE> 
<CAPTION> 
                        Number of
                         Shares     Market Value
                         ------     ------------
<S>                     <C>        <C> 
EQUITIES - 99.9%
Automobiles -- 2.8%
Ciadea SA (D)             280,885  $  1,334,428
Mahindra & Mahindra
 Ltd., GDR                140,683     1,653,025
Orbital Engine
 Corporation Ltd. (D)   2,000,000     1,509,000
Porsche AG,
 Preference                 6,000     5,353,287
                                   -------------
                                      9,849,740
                                   -------------

Banking -- 8.3%
Banco Bradesco SA,
 Preference           230,260,951     1,657,879
Banco de Galicia y
 Buenos Aires SA de
 CV, Sponsored ADR        127,000     3,079,750
Banco Frances del Rio
 de la Plata SA, ADR       57,500     1,581,250
Bank of Scotland        1,250,000     6,588,500
Bil GT Gruppe AG            2,500     1,277,256
Development Bank of
 Singapore Limited        200,000     2,702,260
HSBC Holdings PLC         261,214     5,588,987
Skandinaviska Enskilda
 Banken Group             150,000     1,537,770
Standard Chartered
 Bank PLC                 350,000     4,294,500
Turkiye Garanti
 Bankasi, ADR             252,000     1,131,808
                                   -------------
                                     29,439,960
                                   -------------

Commercial Services -- 0.3%
Adecco SA                   4,000     1,000,952
                                   -------------

Computer Hardware -- 0.8%
Canon, Inc.               100,000     2,205,560
PT Multipolar
 Corporation              933,000       533,116
                                   -------------
                                      2,738,676
                                   -------------

Computer Services -- 1.1%
Sligos SA                  30,000     3,924,027
                                   -------------

Computer Software -- 7.4%
Ines Corp.                 42,000       611,524
Misys PLC                 450,872     8,572,204
Nintendo Co. Ltd.         185,000    13,213,144
SAP AG, Preference         30,000     4,123,002
                                   -------------
                                     26,519,874
                                   -------------

Conglomerates -- 2.1%
Chargeurs
 International SA (D)     120,000   $ 5,932,200
First Philippine
 Holdings Corp., B
 Shares                   700,000     1,596,910
                                   -------------
                                      7,529,110
                                   -------------

Diversified Financial -- 5.8%
ABN Amro Holding
 NV                       101,630     6,604,009
ING Groep NV              137,500     4,944,390
IRSA Inversiones y
 Representaciones, SA   1,014,404     3,256,744
Nomura Securities
 Company Ltd.             250,000     3,747,725
Societe Generale de
 Paris                     20,000     2,158,216
                                   -------------
                                     20,711,084
                                   -------------

Drugs -- 9.3%
Altana AG                   6,000     4,668,067
Ares-Serono Group B        10,500     9,986,057
Biocompatibles
 International PLC (D)    411,665     5,762,651
Glaxo Wellcome PLC,
 Sponsored ADR            250,000     4,064,325
Sanofi SA                  35,000     3,473,918
Takeda Chemical
 Industries Ltd.          250,000     5,233,900
                                   -------------
                                     33,188,918
                                   -------------

Electric Utilities -- 0.4%
Capex SA, GDR              76,000     1,262,360
                                   -------------

Electrical Equipment & Electronics -- 6.5%
Austria Mikro
 Systeme International
 AG                        54,800     4,226,450
Keyence Corporation        20,000     2,464,030
LEM Holdings SA            11,192     2,258,868
Matsushita Electric
 Industrial Company
 Ltd.                     175,000     2,849,560
Rohm Company               40,000     2,619,108
SGS-Thomson
 Microelectronics NV (D)   58,800     4,116,000
Yamatake-Honeywell
 Co., Ltd.                 70,000     1,127,763
Yokogawa Electric
 Corp.                    400,000     3,446,160
                                   -------------
                                     23,107,939
                                   -------------

Energy Services & Producers -- 1.0%
Compagnie Generale de
 Geophysique SA (D)        50,000  $  3,462,375
                                   -------------

Engineering -- 1.7%
Fugro NV                  200,000     3,549,660
Internatio-Muller NV      100,000     2,509,050
                                   -------------
                                      6,058,710
                                   -------------

Financial Services -- 3.8%
Compagnie Bancaire
 SA                        35,000     4,133,693
CS Holding AG              40,000     4,096,156
Merita Ltd.
 A Shares (D)           1,399,600     4,342,399
Van der Hoop
 Effektenbank NV          145,000     1,106,524
                                   -------------
                                     13,678,772
                                   -------------

Food & Beverage -- 2.5%
Hellenic Bottling Co.,
 SA                        70,000     2,242,912
Remy Cointreau            120,000     3,393,120
Sermsuk Public
 Company Limited           50,000       725,425
South African
 Breweries Limited        100,000     2,533,400
                                   -------------
                                      8,894,857
                                   -------------

Healthcare -- 1.4%
Novartis AG                 4,264     4,868,254
                                   -------------

Hotel/Gaming -- 0.8%
Lusomundo, SGPS,
 SA (D)                   257,500     2,962,280
                                   -------------

Household Products -- 0.2%
Srithai Superware Co.
 Ltd.                     175,000       846,318
                                   -------------

Industrial Services -- 3.2%
Boskalis Westminster      347,290     7,027,135
PT Citra Marga
 Nusaphala Persada      2,120,000     1,660,106
VBH - Vereinigter
 Baubeschlag Handel
 AG                       125,000     2,778,025
                                   -------------
                                     11,465,266
                                   -------------
</TABLE> 


                                                                     (Continued)

60 The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual International Equity Fund - Portfolio of Investments (Continued)
- --------------------------------------------------------------------------------
<TABLE> 
<CAPTION> 

                        Number of
                         Shares     Market Value
                         ------     ------------
<S>                    <C>        <C> 
Insurance -- 7.1%
AXA SA                     75,000  $  4,760,768
Marschollek,
 Lautenschlaeger und
 Partner AG                44,000     6,109,884
National Mutual Asia
 Ltd.                   1,816,000     1,725,563
Ockham Holdings PLC     1,000,000     1,283,400
Reinsurance Australia
 Corp. Ltd.             2,910,000    11,325,138
                                   -------------
                                     25,204,753
                                   -------------

Manufacturing -- 3.8%
Bucher Holding AG, B
 Shares                     1,750     1,199,057
Powerscreen
 International PLC        494,100     4,777,354
Rolls-Royce PLC           750,000     3,298,500
SMH AG (Registered)        30,000     4,267,449
                                   -------------
                                     13,542,360
                                   -------------

Medical Products -- 0.4%
Elekta Instrument AB
 Free, Series B            40,000     1,420,612

Metals & Mining -- 2.1%
Boehler-Uddeholm AG        12,000       857,970
Boehler-Uddeholm AG
 144A .                    24,000     1,715,946
Compania de Minas
 Buenaventura SA,
 Sponsored ADR            200,000     3,375,000
Hoganas AB Cl. B           40,000     1,400,108
                                   -------------
                                      7,349,024
                                   -------------

Non-Durable Household Goods -- 1.8%
Wella AG                    2,000     1,057,680
Wella AG Preference        10,000     5,320,843
                                   -------------
                                      6,378,523
                                   -------------

Oil & Gas -- 5.2%
Belle Corporation  .    5,000,000     1,387,500
Coflexip SA,
 Sponsored ADR             90,000     2,362,500
Expro International
 Group PLC                775,000     6,266,495
Hong Kong and China
 Gas Company Ltd.         720,000     1,391,544
PTT Exploration and
 Production                50,000       721,525
Smedvig ASA A
 Shares                   165,000     3,617,625
Smedvig ASA B
 Shares .                 160,000     3,282,496
                                   -------------
                                     19,029,685
                                   -------------

Publishing & Printing-- 0.9%
News Corp. Ltd., ADR      150,000     3,131,250
                                   -------------

Real Estate -- 1.3%
Brazil Realty SA,
 GDR 144A                  59,000     1,121,000
MRC Allied Industries,
 Inc. .                 4,000,000       532,000
Sun Hung Kai
 Properties Ltd.          250,000     3,062,375
                                   -------------
                                      4,715,375
                                   -------------

Retail -- 2.4%
Autobacs Seven Co.
 Limited                   50,000     3,528,040
PT Matahari Putra
 Prima                    700,000       818,518
Vendex International
 NV                       100,000     4,272,320
                                   -------------
                                      8,618,878
                                   -------------

Shipping -- 0.2%
Lisnave-Estaleiros
 Navais de Lisbona SA  .  306,300       806,917
                                   -------------

Specialty Retail -- 3.7%
Adidas AG                  42,200     3,641,919
FamilyMart Co.             60,000     2,393,382
Giordano International
 Ltd.                   1,500,000     1,279,800
Jusco Co.                 100,000     3,385,880
Moebel Walther AG,
 Preference                40,000     2,621,488
                                   -------------
                                     13,322,469
                                   -------------

Telecommunications -- 4.0%
CPT Telefonica del
 Peru SA, Cl. B         1,600,000     2,994,080
Korea Mobile
 Telecommunications
 Corporation                4,300     4,368,962
Millicom International
 Cellular SA .             37,500     1,204,688
Portugal Telecom SA        86,000     2,448,437
Telecom Italia Mobile
 SpA                    1,299,900     3,278,478
                                   -------------
                                     14,294,645
                                   -------------

Telephone Utilities -- 1.4%
Telecomunicacoes
 Brasileiras S/A-
 Telebras                  18,500     1,415,250
Telefonica de Espana
 ADS                      150,000     3,476,835
                                   -------------
                                      4,892,085
                                   -------------

Television -- 0.7%
Groupe AB SA .            165,000     2,371,875
                                   -------------

Textiles -- 1.9%
Bulgari SpA               225,000     4,557,690
Gucci Group NV             35,000     2,235,625
                                   -------------
                                      6,793,315
                                   -------------

Tobacco -- 0.4%
Compagnie Financiere
 Richemont AG               1,000     1,400,141
                                   -------------

Transportation -- 3.2%
Argonaut AB-B Shares .  1,100,000     2,207,040
East Japan Railway Co.        750     3,366,503
Frontline AB .            650,000     2,246,595
MIF Ltd.                  250,000     3,719,425
                                   -------------
                                     11,539,563
                                   -------------

TOTAL EQUITIES                      356,320,942
                                   -------------
(Cost $309,944,622)

WARRANTS -- 0.3%

Drugs -- 0.3%
Biocompatibles
 International PLC  .      71,593       912,676
                                   -------------

Oil & Gas -- 0.0%
Hong Kong and China
 Gas Company Ltd.  .       72,000         3,723
                                   -------------
TOTAL WARRANTS                          916,399
                                   -------------
(Cost $0)

TOTAL INVESTMENTS -- 100.2%          357,237,341
                                   -------------
(Cost $309,944,622)+

Other Assets/
(Liabilities) - (0.2%)                 (585,529)
                                   -------------

NET ASSETS-- 100.0%                $356,651,812
                                   -------------
</TABLE> 
Notes to Portfolio of Investments
 . Non-income producing security
+ Aggregate cost for Federal tax purposes (Note 7)
ADR: American Depository Receipt
GDR: Global Depository Receipt
ADS: American Depository Shares

144A: Securities exempt from registration under rule 144A of the Securities Act
 of 1933. The Securities may be resold in transactions exempt from registration,
 normally to qualified institutional buyers.

   The accompanying notes are an integral part of the financial statements.   61
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual International Equity Fund - Financial Statements
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                                        December 31, 1996
                                                                                        -----------------
<S>                                                                                   <C>
Statement of Assets and Liabilities

Assets:
     Investments, at value (cost $309,944,622) (Note 2).......................        $       357,237,341
     Cash.....................................................................                     83,359
     Foreign currency, at value (cost $4,918,907).............................                  4,903,738
     Receivables from:
       Investments sold.......................................................                  1,783,534
       Open forward foreign currency contracts (Note 2).......................                    612,258
       Fund shares sold.......................................................                    216,824
       Interest and dividends.................................................                    267,791
       Foreign taxes withheld.................................................                    274,223
       Investment manager (Note 3)............................................                     54,877
                                                                                      -------------------
         Total assets.........................................................                365,433,945
                                                                                      -------------------

Liabilities:
     Payables for:
       Investments purchased..................................................                  6,371,010
       Borrowings under line of credit (Note 8)...............................                  1,600,000
       Fund shares redeemed...................................................                    456,891
       Directors' fees and expenses (Note 3)..................................                      5,177
       Affiliates (Note 3):
         Investment management fees...........................................                    254,834
         Administration fees..................................................                     29,289
         Service and distribution fees........................................                        219
     Accrued expenses and other liabilities...................................                     64,713
                                                                                      -------------------
         Total liabilities....................................................                  8,782,133
                                                                                      -------------------
     Net assets...............................................................        $       356,651,812
                                                                                      ===================

Net assets consist of:
     Paid-in capital..........................................................        $       320,990,580
     Undistributed net investment income......................................                    113,978
     Accumulated net realized loss on investments and
       foreign currency translations..........................................               (12,355,482)
     Net unrealized appreciation on investments, forward foreign currency
       contracts, foreign currency and other assets and liabilities...........                 47,902,736
                                                                                      -------------------
                                                                                      $       356,651,812
                                                                                      ===================

Net assets:
     Class 1..................................................................        $           112,681
                                                                                      ===================
     Class 2..................................................................        $           114,019
                                                                                      ===================
     Class 3..................................................................        $           114,468
                                                                                      ===================
     Class 4..................................................................        $       356,310,644
                                                                                      ===================
Shares outstanding:
     Class 1..................................................................                     10,176
                                                                                      ===================
     Class 2..................................................................                     10,281
                                                                                      ===================
     Class 3..................................................................                     10,315
                                                                                      ===================
     Class 4..................................................................                 32,070,618
                                                                                      ===================
Net asset value, offering price and
redemption price per share:
     Class 1..................................................................        $             11.07
                                                                                      ===================
     Class 2..................................................................        $             11.09
                                                                                      ===================
     Class 3..................................................................        $             11.10
                                                                                      ===================
     Class 4..................................................................        $             11.11
                                                                                      ===================
</TABLE> 

62 The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual International Equity Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
                                                                                        Year ended
                                                                                     December 31, 1996
                                                                                     ----------------
<S>                                                                              <C>
Statement of Operations

Investment income:
     Dividends (net of withholding tax of $468,717)............................   $         4,155,451
     Interest..................................................................               350,237
                                                                                  -------------------
       Total investment income.................................................             4,505,688
                                                                                  -------------------
Expenses (Note 1):
     Investment management fees (Note 3).......................................             2,398,114
     Custody fees..............................................................               319,874
     Audit and legal fees......................................................                 9,403
     Excise taxes..............................................................                 6,854
     Directors' fees (Note 3)..................................................                15,246
     Fees waived by the investment manager (Note 3)............................              (196,769)
                                                                                  -------------------
                                                                                            2,552,722
     Administration fees (Note 3):
       Class 1.................................................................                   698
       Class 2.................................................................                   569
       Class 3.................................................................                   465
       Class 4.................................................................               273,938
     Distribution and service fees (Note 3):
       Class 1.................................................................                   763
       Class 2.................................................................                   157
                                                                                  -------------------
         Net operating expenses................................................             2,829,312
     Interest expense (Note 8).................................................                25,373
                                                                                  -------------------
         Net investment income.................................................             1,651,003
                                                                                  -------------------

Realized and unrealized gain (loss) from investments
and foreign currency:
     Net realized gain on:
       Investment transactions.................................................             5,099,336
       Foreign currency transactions...........................................             5,633,016
                                                                                  -------------------
         Net realized gain.....................................................            10,732,352
                                                                                  -------------------
     Net change in unrealized appreciation
     (depreciation) on:
       Investments.............................................................            36,945,058
       Translation of assets and liabilities in foreign currencies.............              (414,384)
                                                                                  -------------------
         Net unrealized gain...................................................            36,530,674
                                                                                  -------------------
         Net realized and unrealized gain from investments
          and foreign currency.................................................            47,263,026
                                                                                  -------------------
     Net increase in net assets resulting from operations......................   $        48,914,029
                                                                                  ===================
</TABLE>
   The accompanying notes are an integral part of the financial statements.   63
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual International Equity Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                                  Year ended             Year ended
                                                                               December 31, 1996      December 31, 1995
                                                                               -----------------      -----------------
<S>                                                                          <C>                     <C>
Statements of Changes in Net Assets

Increase (Decrease) in Net Assets:
Operations:
     Net investment income..............................................     $         1,651,003    $         1,410,289
     Net realized gain (loss) on investment and foreign
      currency transactions.............................................              10,732,352           (11,680,240)
     Net change in unrealized appreciation (depreciation) on
      investments and translation of assets and liabilities in
      foreign currencies................................................              36,530,674             19,939,116
                                                                             -------------------    -------------------
         Net increase in net assets resulting from operations...........              48,914,029              9,669,165
                                                                             -------------------    -------------------

Distributions to shareholders (Note 2):
     From net investment income:
     Class 1............................................................                   (263)                     --
     Class 2............................................................                   (433)                  (195)
     Class 3............................................................                   (501)                  (467)
     Class 4............................................................             (1,825,896)            (1,565,611)
                                                                             -------------------    -------------------
         Total distributions from net investment income.................             (1,827,093)            (1,566,273)
                                                                             -------------------    -------------------
     In excess of net investment income:
     Class 1............................................................                   (794)                  (830)
     Class 2............................................................                 (1,308)                  (952)
     Class 3............................................................                 (1,513)                  (947)
     Class 4............................................................             (5,515,423)            (2,389,653)
                                                                             -------------------    -------------------
         Total distributions in excess of net investment income.........             (5,519,038)            (2,392,382)
                                                                             -------------------    -------------------

Net fund share transactions (Note 5):
     Class 1............................................................                 (13,956)                16,103
     Class 2............................................................                   1,742                  1,191
     Class 3............................................................                   2,018                  1,430
     Class 4............................................................              94,070,522             64,817,475
                                                                             -------------------    -------------------
      Increase in net assets from net fund share transactions...........              94,060,326             64,836,199
                                                                             -------------------    -------------------
     Total increase in net assets.......................................             135,628,224             70,546,709
Net assets:
     Beginning of period................................................             221,023,588            150,476,879
                                                                             -------------------    -------------------
     End of period (including undistributed net investment income
      of $113,978 and distributions in excess of net investment
     income of $215,389)................................................     $       356,651,812    $       221,023,588
                                                                             ===================    ===================
</TABLE>

64 The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual International Equity Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)

<TABLE> 
<CAPTION> 
                                                                                                      Class 1
                                                                                                    ----------
                                                                               Year ended           Year ended         Period Ended
                                                                                12/31/96             12/31/95           12/31/94**
                                                                               ----------           ----------         ------------
<S>                                                                            <C>                  <C>                <C> 
Net asset value, beginning of period                                           $     9.54           $     9.25         $    10.00
                                                                               ----------           ----------         -----------

Income (loss) from investment operations:
  Net investment income                                                             (0.07)               (0.03)             (0.02)
  Net realized and unrealized gain (loss) on investments
  and foreign currency                                                               1.70                 0.40              (0.73)
                                                                               ----------           ----------         -----------
   Total income (loss) from investment operations                                    1.63                 0.37              (0.75)
                                                                               ----------           ----------         -----------
Less distributions to shareholders:
  From net investment income                                                        (0.10)                  --                 --
  In excess of net investment income                                                   --                (0.08)                --
                                                                               ----------           ----------         -----------
   Total distributions                                                              (0.10)               (0.08)                --
                                                                               ----------           ----------         -----------
Net asset value, end of period                                                 $    11.07           $     9.54         $     9.25
                                                                               ==========           ==========         ===========
Total Return                                                                        17.09%                3.96%             (7.50)%

Ratios / Supplemental Data:
  Net assets, end of period (000's)                                                  $113                 $112                $93
  Net expenses to average daily net assets#                                          2.15%                2.15%              2.15%*
  Net investment income to average daily net assets                                 (0.51)%              (0.40)%            (1.10)%*

  Portfolio turnover rate                                                             58%                  121%                18%
  Average broker commission rate (a)                                           $   .0254                   N/A                N/A

   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                     2.22%                 2.24%              2.24%*
<CAPTION> 
                                                                                                      Class 2
                                                                                                    ----------
                                                                               Year ended           Year ended         Period Ended
                                                                                12/31/96             12/31/95           12/31/94**
                                                                               ----------           ----------         ------------
<S>                                                                            <C>                  <C>                <C> 
Net asset value, beginning of period                                           $     9.56           $     9.26         $    10.00
                                                                               ----------           ----------         ----------
Income (loss) from investment operations:
  Net investment income                                                              0.00                 0.02              (0.01)
  Net realized and unrealized gain (loss) on investments
  and foreign currency                                                               1.70                 0.40              (0.73)
                                                                               ----------           ----------         ----------
   Total income (loss) from investment operations                                    1.70                 0.42              (0.74)
                                                                               ----------           ----------         ----------
Less distributions to shareholders:
  From net investment income                                                        (0.17)               (0.02)                --
  In excess of net investment income                                                   --                (0.10)                --
                                                                               ----------           ----------         ----------
   Total distributions                                                              (0.17)               (0.12)                --
                                                                               ----------           ----------         -----------
Net asset value, end of period                                                 $    11.09           $     9.56         $     9.26
                                                                               ==========           ==========         ==========
Total Return                                                                        17.85%                4.52%             (7.40)%

Ratios / Supplemental Data:
  Net assets, end of period (000's)                                                  $114                  $97                $93
  Net expenses to average daily net assets#                                          1.60%                1.60%              1.60%*
  Net investment income to average daily net assets                                  0.02%                0.19%             (0.55)%*

  Portfolio turnover rate                                                              58%                 121%                18%
  Average broker commission rate (a)                                           $    .0254                  N/A                N/A

   #Computed after giving effect to the reduction in
   management fee by MassMutual. Without this reduction of
   fees by the investment manager, the ratio of expenses
   to average daily net assets would have been:                                      1.67%                1.69%              1.69%*
</TABLE> 

*Annualized
**For the period from October 3, 1994 (commencement of operations) through
December 31, 1994.
(a)Average commission rate paid is computed by dividing the total amount of
   commissions paid during the fiscal year by the total number of shares
   purchased and sold during the fiscal year for which commissions were charged.
   For fiscal years beginning on or after September 1, 1995, a Fund is required
   to disclose its average commission rate per share for security trades on
   which commissions are charged.

   The accompanying notes are an integral part of the financial statements.   65
<PAGE>
 
- --------------------------------------------------------------------------------
MassMutual International Equity Fund - Financial Statements (Continued)
- --------------------------------------------------------------------------------

Financial Highlights
(For a share outstanding throughout each period)

<TABLE> 
<CAPTION> 
                                                                                                  Class 3
                                                                                                 ----------
                                                                            Year ended           Year ended         Period Ended
                                                                             12/31/96             12/31/95           12/31/94**
                                                                            ----------           ----------         ------------
<S>                                                                         <C>                  <C>                <C> 
Net asset value, beginning of period                                        $     9.57           $     9.27         $     10.00
                                                                            ----------           ----------         -----------

Income (loss) from investment operations:
  Net investment income                                                           0.03                 0.04               (0.00)
  Net realized and unrealized gain (loss) on investments
  and foreign currency                                                            1.70                 0.40               (0.73)
                                                                            ----------           ----------         -----------
   Total income (loss) from investment operations                                 1.73                 0.44               (0.73)
                                                                            ----------           ----------         -----------
Less distributions to shareholders:
  From net investment income                                                     (0.20)               (0.05)                 --
  In excess of net investment income                                                --                (0.09)                 --
                                                                            ----------           ----------         ----------- 
   Total distributions                                                           (0.20)               (0.14)                 --
                                                                            ----------           ----------         -----------
Net asset value, end of period                                              $    11.10           $     9.57         $      9.27
                                                                            ==========           ==========         ===========
Total Return                                                                     18.11%                4.78%              (7.30)%

Ratios / Supplemental Data:
  Net assets, end of period (000's)                                               $114                  $97                 $93
  Net expenses to average daily net assets#                                       1.35%                1.35%               1.35%*
  Net investment income to average daily net assets                               0.27%                0.45%              (0.30)%*
  Portfolio turnover rate                                                           58%                 121%                 18%
  Average broker commission rate (a)                                        $    .0254                  N/A                 N/A
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                                  1.42%                1.44%               1.44%*
<CAPTION> 
                                                                                                  Class 4
                                                                                                  -------
                                                                            Year ended           Year ended         Period Ended
                                                                             12/31/96             12/31/95           12/31/94**
                                                                            ----------           ----------         ------------
<S>                                                                         <C>                  <C>                <C> 
Net asset value, beginning of period                                        $     9.58           $     9.28         $     10.00
                                                                            ----------           ----------         -----------
Income (loss) from investment operations:
  Net investment income                                                           0.06                 0.07                0.00
  Net realized and unrealized gain (loss) on investments
  and foreign currency                                                            1.71                 0.41               (0.72)
                                                                            ----------           ----------         ----------- 
   Total income (loss) from investment operations                                 1.77                 0.48               (0.72)
                                                                            ----------           ----------         -----------
Less distributions to shareholders:
  From net investment income                                                     (0.24)               (0.07)                 --
  In excess of net investment income                                                --                (0.11)                 --
                                                                            ----------           ----------         -----------
   Total distributions                                                           (0.24)               (0.18)                 --
                                                                            ----------           ----------         -----------
Net asset value, end of period                                              $    11.11           $     9.58         $      9.28
                                                                            ==========           ==========         ===========
Total Return@                                                                    18.51%                5.13%              (7.20)%
                                         
Ratios / Supplemental Data:

  Net assets, end of period (000's)                                           $356,311             $220,718            $150,199
  Net expenses to average daily net assets#                                     1.0020%              1.0020%             1.0020%*
  Net investment income to average daily net assets                               0.59%                0.76%               0.04%*
  Portfolio turnover rate                                                           58%                 121%                 18%
  Average broker commission rate (a)                                        $    .0254                  N/A                 N/A
   #Computed after giving effect to the reduction in
    management fee by MassMutual. Without this reduction of
    fees by the investment manager, the ratio of expenses
    to average daily net assets would have been:                                1.0718%              1.0920%             1.0877%*
</TABLE> 

*Annualized
**For the period from October 3, 1994 (commencement of operations) through
  December 31, 1994.
 @ Employee retirement benefit plans that invest plan assets in the Separate
   Investment Accounts (SIAs) may be subject to certain charges as set forth in
   their respective Plan Documents. Total return figures would be lower for the
   periods presented if they reflected these charges.
(a)Average commission rate paid is computed by dividing the total amount of
   commissions paid during the fiscal year by the total number of shares
   purchased and sold during the fiscal year for which commissions were charged.
   For fiscal years beginning on or after September 1, 1995, a Fund is required
   to disclose its average commission rate per share for security trades on
   which commissions are charged.

66   The accompanying notes are an integral part of the financial statements.
<PAGE>
 
- --------------------------------------------------------------------------------
Notes to Financial Statements
- --------------------------------------------------------------------------------

1.  The Trust

MassMutual Institutional Funds (the "Trust") is registered under the Investment
Company Act of 1940, as amended (the "1940 Act"), as an open-end, diversified
management investment company. The Trust is organized under the laws of the
Commonwealth of Massachusetts as a Massachusetts business trust pursuant to an
Agreement and Declaration of Trust dated May 28, 1993, as amended. The Trust
consists of seven separate series of shares (each individually referred to as a
"Fund" or collectively as the "Funds"), each having four classes of shares:
Class 1, Class 2, Class 3 and Class 4. Class 1, Class 2 and Class 3 shares of
each Fund are offered primarily to employer-sponsored defined contribution plans
that satisfy the qualification requirements of Section 401(a) of the Internal
Revenue Code of 1986, as amended (the "Code"). Class 4 shares of each Fund are
available only to separate investment accounts ("SIAs") of Massachusetts Mutual
Life Insurance Company ("MassMutual") in which corporate qualified plans
including defined contribution plans and defined benefit plans are permitted to
invest pursuant to the issuance of group annuity contracts. The Funds are
MassMutual Prime Fund ("Prime Fund"), MassMutual Short-Term Bond Fund
("Short-Term Bond Fund"), MassMutual Core Bond Fund ("Core Bond Fund"),
MassMutual Balanced Fund ("Balanced Fund"), MassMutual Value Equity Fund ("Value
Equity Fund"), MassMutual Small Cap Value Equity Fund ("Small Cap Value Equity
Fund"), and MassMutual International Equity Fund ("International Equity Fund"),
all of which commenced operations on October 3, 1994.


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. The preparation of the
financial statements in accordance with generally accepted accounting principles
requires management to make estimates and assumptions that affect the reported
amounts and disclosures in the financial statements. Actual results could differ
from those estimates.


Investment Valuation

Equity securities are valued on the basis of valuations furnished by a pricing
service, authorized by the Board of Trustees ("Trustees"), which provides the
last reported sale price for securities listed on a national securities exchange
or on the NASDAQ national market system, or in the case of over-the-counter
securities not so listed, the last reported bid price. Debt securities (other
than short-term obligations with a remaining maturity of sixty days or less) are
valued on the basis of valuations furnished by a pricing service, authorized by
the 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. Money market obligations with a remaining maturity of
sixty days or less are valued at either amortized cost or at original cost plus
accrued interest, whichever approximates current market value. All other
securities and other assets, including debt securities for which the prices
supplied by a pricing agent are deemed by MassMutual not to be representative of
market values, and including restricted securities and securities for which no
market quotation is available, are valued at fair value in accordance with
procedures approved by and determined in good faith by the Trustees, although
the actual calculation may be done by others.


Portfolio securities traded on more than one national securities exchange are
valued at the last price on the business day as of which such value is being
determined at the close of the exchange representing the principal market for
such securities. All assets and liabilities expressed in foreign currencies will
be converted into U.S. dollars at the mean between the buying and selling rates
of such currencies against U.S. dollars last quoted by any major bank. If such
quotations are not available, the rate of exchange will be determined in
accordance with policies established by the Trustees.

                                                                              67
<PAGE>
 
- --------------------------------------------------------------------------------
Notes to Financial Statements (Continued)
- --------------------------------------------------------------------------------

Accounting for Investments


Investment transactions are accounted for on the trade date. Realized gains and
losses on sales of investments and unrealized appreciation and depreciation of
investments are computed on the specific identification cost method. Interest
income, adjusted for amortization of discounts and premiums on investments, is
earned from the settlement date and is recorded on the accrual basis. Dividend
income is recorded on the ex-dividend date.


Federal Income Tax


It is each Fund's intent to continue to comply with the provisions of subchapter
M of the Code applicable to a regulated investment company. Under such
provisions, the Funds will not be subject to federal income taxes on their
ordinary income and net realized capital gain to the extent they are distributed
or deemed to have been distributed to their shareholders. Therefore, no Federal
income tax provision is required.


Dividends and Distributions to Shareholders


Dividends from net investment income and distributions of any net realized
capital gains of each Fund are declared and paid annually and at other times as
may be required to satisfy tax or regulatory requirements. Distributions to
shareholders are recorded on the ex-dividend date. Income and capital gain
distributions are determined in accordance with income tax regulations which may
differ from generally accepted accounting principles. These differences are
primarily due to investments in forward contracts, passive foreign investment
companies, 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.


Foreign Currency Translation


The books and records of the Funds are maintained in U.S. dollars. The market
values of foreign currencies, foreign securities and other assets and
liabilities denominated in foreign currencies are translated into U.S. dollars
at the mean of the buying and selling rates of such currencies against the U.S.
dollar at the end of each business day. Purchases and sales of foreign
securities and income and expense items are translated at the rates of exchange
prevailing on the respective dates of such transactions. The Funds do not
isolate that portion of the results of operations arising from changes in the
exchange rates from that portion arising from changes in the market prices of
securities.

Net realized foreign currency gains and losses resulting from changes in
exchange rates include foreign currency gains and losses between trade date and
settlement date on investment securities transactions, foreign currency
transactions and the difference between the amounts of dividends recorded on the
books of the Funds and the amount actually received.


Forward Foreign Currency Contracts


Each Fund may enter into forward foreign currency contracts in order to convert
foreign denominated securities or obligations to U.S. dollar denominated
investments. The International Equity Fund may engage in such transactions to
manage the value of portfolio holdings against future movements in certain
foreign currency exchange rates. A forward foreign currency contract is an
agreement between two parties to buy and sell a currency at a set price on a
future date. The market value of a forward currency contract fluctuates with
changes in forward foreign currency exchange rates. Forward foreign currency
contracts are marked to market daily and the change in their value is recorded
by the Funds as an unrealized gain or loss. When a forward foreign currency
contract is extinguished, through delivery or offset by entering into another
forward foreign currency contract, the Funds record a realized gain or loss
equal to the difference between the value of the contract at the time it was
opened and the value of the contract at the time it was extinguished or offset.

Forward foreign currency contracts involve a risk of loss from the potential
inability of counterparties to meet the terms of their contracts and from
unanticipated movements in foreign currency values and interest rates.

68
<PAGE>
 
- --------------------------------------------------------------------------------
Notes to Financial Statements (Continued)
- --------------------------------------------------------------------------------

The notional or contractual amounts of these instruments represent the
investments the Funds have in particular classes of financial instruments and do
not necessarily represent the amounts potentially subject to risk. The
measurement of the risk associated with these instruments is meaningful only
when all related and offsetting transactions are considered. A summary of
obligations for the International Equity Fund under these financial instruments
at December 31, 1996 is as follows:

<TABLE> 
<CAPTION> 
                                                                 In
                     Contracts                                Exchange                                Unrealized
Settlement              to                Units of            for U.S.           Contracts at        Appreciation
   Date           Deliver/Receive         Currency             Dollars               Value          (Depreciation)
- ----------        ---------------         --------            --------           ------------       --------------
 <S>        <C>                         <C>               <C>                  <C>                  <C> 
 BUYS
 01/13/97   Austrian Schilling              2,124,732     $       196,807      $      196,017       $        (790)

 SELLS
 01/02/97   British Pound                     114,041             190,471             195,147               (4,676)
 01/03/97   British Pound                     334,350             562,433             572,139               (9,706)
 01/07/97   British Pound                     110,538             188,114             189,153               (1,039)
 01/27/97   Japanese Yen                4,007,200,000          35,305,727          34,677,258               628,469
                                                                                                    ---------------
                                                                                                            613,048
                                                                                                    ---------------
                                                                                                    $       612,258
                                                                                                    ===============
</TABLE> 

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. Forward commitments are not used for purposes of
trading. Delivery and payment for securities purchased on a forward commitment
basis can take place a month or more after the date of the transaction. The
Funds instruct the custodian to segregate 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 repurchase 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. When a forward commitment
contract is closed, the Funds record a realized gain or loss equal to the
difference between the value of the contract at the time it was opened and the
value of the contract at the time it was extinguished. 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 Funds monitor
exposure to ensure counterparties are creditworthy and concentration of exposure
is minimized. A summary of open obligations under these forward commitments at
December 31, 1996, is as follows:

<TABLE> 
<CAPTION> 

       Forward               Expiration       Aggregate
     Commitment                 of            Face Value                             Market        Unrealized
  Contracts to Buy           Contracts       of Contracts           Cost              Value      (Depreciation)
  ----------------           ----------      ------------           ----             ------      --------------
<S>                        <C>               <C>                 <C>               <C>               <C> 
Core Bond Fund
 U.S. Treasury Note
5.875% 11/15/1999          February 1997     $ 9,250,000         $ 9,215,674       $ 9,203,935       ($11,739)

Balanced Fund
 U.S. Treasury Note
5.875% 11/15/1999          February 1997      $1,900,000          $1,892,949        $1,890,538       ($ 2,411)
</TABLE> 

                                                                              69
<PAGE>
 
- --------------------------------------------------------------------------------
Notes to Financial Statements (Continued)
- --------------------------------------------------------------------------------

Allocation of Operating Activity


In maintaining the records for the Funds, the income and expense accounts are
allocated to each class of shares. Investment income, unrealized and realized
gains or losses are prorated among the classes of shares based on the relative
net assets of each. Expenses are allocated to each class of shares depending on
the nature of the expenditures. Administration and distribution and service
fees, which are directly attributable to a class of shares, are charged to that
class' operations. Expenses of the Fund not directly attributable to the
operations of any class of shares or Fund are prorated among the Funds and
classes to which the expense relates based on the relative net assets of each.
Total expenses per class are currently limited to a percentage of average daily
net assets, as discussed in Note 3.


3.   Management Fees and Other Transactions With Affiliates


Investment Management Fees


Under an agreement between the Trust and MassMutual, MassMutual is responsible
for providing investment management of each Fund. In return for this service,
MassMutual receives advisory fees monthly based upon each Fund's average daily
net assets at the following annual rates:

<TABLE> 
<S>                                                                <C> 
Prime Fund                                                         .45%
Short-Term Bond Fund                                               .45%
Core Bond Fund                                                     .45%
Balanced Fund                                                      .45%
Value Equity Fund                                                  .45%
Small Cap Value Equity Fund                                        .55%
International Equity Fund                                          .85%
</TABLE> 

MassMutual has entered into investment sub-advisory agreements with two
subsidiaries: David L. Babson & Company, Inc. ("Babson") and HarbourView Asset
Management Corporation ("HarbourView"). These agreements provide that (1)
effective January 1, 1997, Babson will manage the investment and reinvestment of
the assets of the Value Equity Fund, the Small Cap Value Equity Fund and the
Value Equity sector of the Balanced Fund, and (2) HarbourView will manage the
investment and reinvestment of the assets of the International Equity Fund.
Prior to January 1, 1997, Concert Capital Management ("Concert Capital") served
as the investment sub-advisor to the Value Equity Fund, the Small Cap Value
Equity Fund and the Value Equity sector of the Balanced Fund. On January 1,
1996, the employees of Concert Capital became co-employees of Babson. At the
time, both Concert Capital and Babson were wholly-owned subsidiaries of DLB
Acquisition Corporation, a controlled subsidiary of MassMutual. Concert Capital
merged with and into Babson effective December 31, 1996.

MassMutual pays Babson a fee equal to an annual rate of .13% of the average
daily net asset value of the Value Equity Fund and the Value Equity sector of
the Balanced Fund and .25% of the average daily net asset value of the Small Cap
Value Equity Fund. MassMutual pays HarbourView a fee equal to an annual rate of
 .50% of the average daily net asset value of the International Equity Fund.


Administration Fees


Under separate administrative and shareholder services agreements between each
Fund and MassMutual, MassMutual provides certain administrative and shareholder
services and bears some class specific administrative expenses. In return for
these services, MassMutual receives an administrative services fee monthly based
upon the average daily net assets of the applicable class of shares of the Fund
at the following annual rates:

<TABLE> 
<CAPTION> 
                                  Class 1       Class 2        Class 3        Class 4
                               -------------- -------------  -------------  ------------
<S>                                   <C>           <C>            <C>           <C>  
Prime Fund                            .5628%        .5128%         .3152%        .0812%
Short-Term Bond Fund                  .5568%        .5068%         .3092%        .0782%
Core Bond Fund                        .5688%        .5188%         .3212%        .0842%
Balanced Fund                         .5708%        .5208%         .3232%        .0852%
Value Equity Fund                     .5814%        .5314%         .3338%        .0905%
Small Cap Value Equity Fund           .5728%        .5228%         .3252%        .0862%
International Equity Fund             .5948%        .5448%         .4448%        .0972%
</TABLE> 

70
<PAGE>
 
Notes to Financial Statements (Continued)


Distribution and Service Fees

                                                                    
OppenheimerFunds Distributor, Inc. ("Oppenheimer") acts as distributor to each
Fund. MML Investor Services, Inc. ("MMLISI") serves as sub-distributor to each
Fund. MassMutual has a controlling interest in OppenheimerFunds and MMLISI is a
wholly owned subsidiary of MassMutual. Oppenheimer is paid a distribution fee
with respect to Class 1 and Class 2 at the annual rate of .40% and .15%,
respectively, of the value of average daily net assets attributable to those
classes of shares of which a portion is subsequently allocated to MMLISI. The
Funds do not pay any fees directly to MMLISI. MassMutual is also paid a fee for
shareholder services with respect to Class 1 shares of the Funds at the annual
rate of .25% of the value of the average daily net assets of the respective
class of each Fund. These fees are authorized pursuant to separate service and
distribution plans for each of the classes of shares adopted by the Funds
pursuant to Rule 12b-1 under the Investment Company Act and are used by
Oppenheimer to cover expenses primarily intended to result in the sale of those
shares of the Funds.


Expense Limitations

MassMutual has voluntarily agreed to waive a portion of its management fee to
the extent that the aggregate annual operating expenses incurred during the year
exceed the following percentages of the average daily net assets:

<TABLE> 
<CAPTION> 

                                          Class 1        Class 2        Class 3        Class 4
                                       -------------- -------------- -------------- --------------
<S>                                      <C>         <C>             <C>          <C>  
 Prime Fund                               1.65%          1.10%           .75%         .5160%
 Short-Term Bond Fund                     1.65%          1.10%           .75%         .5190%
 Core Bond Fund                           1.65%          1.10%           .75%         .5130%
 Balanced Fund                            1.65%          1.10%           .75%         .5120%
 Value Equity Fund                        1.65%          1.10%           .75%         .5067%
 Small Cap Value Equity Fund              1.75%          1.20%           .85%         .6110%
 International Equity Fund                2.15%          1.60%          1.35%         1.002%
</TABLE> 

MassMutual's management fee for the year ended December 31, 1996 was
$20,477,568, of which $1,925,096 was reimbursed to the Funds.

Other 

Certain officers and directors of the Funds are also officers of
MassMutual. The compensation of unaffiliated directors of the Funds is borne by
the Funds.

At December 31, 1996, MassMutual or separate investment accounts thereof owned
all of the outstanding shares of the Trust.

4.  Purchases And Sales Of Investments

Cost of purchases and proceeds from sales of investment securities (excluding
short-term investments) for the year ended December 31, 1996 were as follows:

<TABLE> 
<CAPTION> 
                                        Long-term U.S.
                                          Government                 Other Long-term
                                          Securities                   Securities
                                  ---------------------        ----------------------
Purchases
<S>                          <C>                             <C> 
Short-Term Bond Fund              $         102,126,595        $          32,662,257
Core Bond Fund                              168,040,130                  117,409,164
Balanced Fund                                48,825,564                   81,833,743
Value Equity Fund                                    --                  366,428,008
Small Cap Value Equity Fund                          --                  126,866,361
International Equity Fund                            --                  255,790,219

Sales

Short-Term Bond Fund               $          39,099,687        $          14,835,789
Core Bond Fund                               111,228,535                   37,231,689
Balanced Fund                                 39,076,581                   45,001,025
Value Equity Fund                                     --                  281,828,695
Small Cap Value Equity Fund                           --                  107,156,414
International Equity Fund                             --                  161,400,001
</TABLE> 

                                                                              71
<PAGE>
- --------------------------------------------------------------------------------
Notes to Financial Statements (Continued)
- --------------------------------------------------------------------------------

5.     Capital Share Transactions

The Funds are authorized to issue an unlimited number of shares, with no par
value, in one or more of four classes of shares: Class 1, Class 2, Class 3 and
Class 4. Class 1 and Class 2 shares of each Fund are subject to distribution and
service fees. Class 3 shares are not subject to any distribution or service
fees. SIA Investors purchase Class 4 shares directly from the Funds and pay no
distribution or service fees. Changes in shares outstanding for each Fund are as
follows:

<TABLE> 
<CAPTION> 
                                                      Class 1                                 

                                     Year ended                    Year ended                 
                                  December 31, 1996             December 31, 1995             

                                   Shares         Amount         Shares          Amount        
                                  --------       --------       --------        --------       
<S>                               <C>           <C>            <C>              <C> 
Prime Fund
  Sold                                  --             --             --              --      
  Issued as reinvestment
   of dividends                         28          4,288             28           4,178      
  Redeemed                              --             --             --              --      
                                  --------       --------       --------        --------       
  Net increase                          28       $  4,288             28        $  4,178      
                                  ========       ========       ========        ========       

Short-Term Bond Fund
  Sold                                  --             --             --              --      
  Issued as reinvestment
   of dividends                        519          5,285            740           7,530      
  Redeemed                              --             --             --              --      
                                  --------       --------       --------        --------       
  Net increase                         519       $  5,285            740        $  7,530      
                                  ========       ========       ========        ========       

Core Bond Fund
  Sold                                 429          4,520          4,457          49,156      
  Issued as reinvestment
   of dividends                        489          5,156          1,186          12,759      
  Redeemed                          (5,250)       (55,534)            --              --      
                                  --------       --------       --------        --------       
  Net increase (decrease)           (4,332)      $(45,858)         5,643        $ 61,915      
                                  ========       ========       ========        ========       

Balanced Fund
  Sold                                 931         10,969          4,480          49,577      
  Issued as reinvestment
   of dividends                        416          5,173            530           6,084      
  Redeemed                          (5,552)       (65,509)           (23)           (260)     
                                  --------       --------       --------        --------       
  Net increase (decrease)           (4,205)      $(49,367)         4,987        $ 55,401      
                                  ========       ========       ========        ========       

Value Equity Fund
  Sold                                  --             --             --              --      
  Issued as reinvestment
   of dividends                        403          5,884            219           2,751      
  Redeemed                              --             --             --              --      
                                  --------       --------       --------        --------       
  Net increase                         403       $  5,884            219        $  2,751      
                                  ========       ========       ========        ========       

Small Cap Value Equity Fund
  Sold                               4,373         54,090          4,740          49,719      
  Issued as reinvestment
   of dividends                        349          4,660            119           1,356      
  Redeemed                          (9,150)      (108,036)            --              --      
                                  --------       --------       --------        --------       
  Net increase (decrease)           (4,428)      $(49,286)         4,859        $ 51,075      
                                  ========       ========       ========        ========       

International Equity Fund
  Sold                               5,377         55,098          1,610          15,218      
  Issued as reinvestment
   of dividends                        100          1,065             93             885      
  Redeemed                          (7,009)       (70,119)            --              --      
                                  --------       --------       --------        --------       
  Net increase (decrease)           (1,532)      $(13,956)         1,703        $ 16,103      
                                  ========       ========       ========        ========       

<CAPTION> 

                                                           Class 2
                      
                                         Year ended                     Year ended
                                      December 31, 1996              December 31, 1995
                      
                                      Shares          Amount         Shares            Amount
                                     --------        --------       --------          -------
<S>                               <C>               <C>            <C>             <C> 
Prime Fund
  Sold                                     --              --             --               --
  Issued as reinvestment
   of dividends                            33           4,922             32            4,746
  Redeemed                                 --              --             --               --
                                     --------        --------       --------          -------
  Net increase                             33        $  4,922             32          $ 4,746
                                     ========        ========       ========          =======

Short-Term Bond Fund
  Sold                                     --              --             --               --
  Issued as reinvestment
   of dividends                           584           5,951            796            8,116
  Redeemed                                 --              --             --               --
                                     --------        --------       --------          -------
  Net increase                            584        $  5,951            796          $ 8,116
                                     ========        ========       ========          =======

Core Bond Fund
  Sold                                     --              --             --               --
  Issued as reinvestment
   of dividends                           562           5,941            861            9,288
  Redeemed                                 --              --             --               --
                                     --------        --------       --------          -------
  Net increase (decrease)                 562        $  5,941            861          $ 9,288
                                     ========        ========       ========          =======

Balanced Fund
  Sold                                     --              --             --               --
  Issued as reinvestment
   of dividends                           484           6,038            401            4,610
  Redeemed                                 --              --             --               --
                                     --------        --------       --------          -------
  Net increase (decrease)                 484        $  6,038            401          $ 4,610
                                     ========        ========       ========          =======

Value Equity Fund
  Sold                                     --              --             --               --
  Issued as reinvestment
   of dividends                           456           6,682            267            3,372
  Redeemed                                 --              --             --               --
                                     --------        --------       --------          -------
  Net increase                            456        $  6,682            267          $ 3,372
                                     ========        ========       ========          =======

Small Cap Value Equity Fund
  Sold                                     --              --             --               --
  Issued as reinvestment
   of dividends                           420           5,622            114            1,300
  Redeemed                                 --              --             --               --
                                     --------        --------       --------          -------
  Net increase (decrease)                 420        $  5,622            114          $ 1,300
                                     ========        ========       ========          =======

International Equity Fund
  Sold                                     --              --             --               --
  Issued as reinvestment
   of dividends                           161           1,742            124            1,191
  Redeemed                                 --              --             --               --
                                     --------        --------       --------          -------
  Net increase (decrease)                 161        $  1,742            124          $ 1,191
                                     ========        ========       ========          =======
</TABLE> 

72
<PAGE>

- --------------------------------------------------------------------------------
Notes to Financial Statements (Continued)
- --------------------------------------------------------------------------------

<TABLE> 
<CAPTION> 
                                                        Class 3                               

                                       Year ended                    Year ended               
                                    December 31, 1996             December 31, 1995           

                                   Shares          Amount         Shares          Amount      
                                  --------       --------       --------        --------     
<S>                             <C>              <C>           <C>              <C> 
Prime Fund
  Sold                                  --             --             --              --    
  Issued as reinvestment                         
   of dividends                         35          5,335             34           5,095    
  Redeemed                              --             --             --              --    
                                  --------       --------       --------        --------     
  Net increase                          35       $  5,335             34        $  5,095    
                                  ========       ========       ========        ========     
                                                 
Short-Term Bond Fund                             
  Sold                                  --             --             --              --    
  Issued as reinvestment                         
   of dividends                        625          6,381            830           8,467    
  Redeemed                              --             --             --              --    
                                  --------       --------       --------        --------     
  Net increase                         625       $  6,381            830        $  8,467    
                                  ========       ========       ========        ========     
                                                 
Core Bond Fund                                   
  Sold                                  --             --             --              --    
  Issued as reinvestment                         
   of dividends                        604          6,389            894           9,658    
  Redeemed                              --             --             --              --    
                                  --------       --------       --------        --------     
  Net increase                         604       $  6,389            894        $  9,658    
                                  ========       ========       ========        ========     
                                                  
Balanced Fund                                     
  Sold                                  --             --             --              --    
  Issued as reinvestment                          
   of dividends                        521          6,510            433           4,977    
  Redeemed                              --             --             --              --    
                                  --------       --------       --------        --------     
  Net increase                         521       $  6,510            433        $  4,977    
                                  ========       ========       ========        ========     
                                                  
Value Equity Fund                                 
  Sold                                  --             --             --              --    
  Issued as reinvestment                          
   of dividends                        492          7,213            299           3,763    
  Redeemed                              --             --             --              --    
                                  --------       --------       --------        --------     
  Net increase                         492       $  7,213            299        $  3,763    
                                  ========       ========       ========        ========     
                                                  
Small Cap Value Equity Fund                       
  Sold                                  --             --             --              --    
  Issued as reinvestment                          
   of dividends                        455          6,096            146           1,672    
  Redeemed                              --             --             --              --    
                                  --------       --------       --------        --------     
  Net increase                         455       $  6,096            146        $  1,672    
                                  ========       ========       ========        ========     
                                                  
International Equity Fund                         
  Sold                                  --             --             --              --    
  Issued as reinvestment                          
   of dividends                        186          2,018            149           1,430    
  Redeemed                              --             --             --              --    
                                  --------       --------       --------        --------     
  Net increase                         186       $  2,018            149        $  1,430    
                                  ========       ========       ========        ========     

<CAPTION> 

                                                          Class 4

                                        Year ended                     Year ended
                                     December 31, 1996              December 31, 1995

                                     Shares          Amount         Shares         Amount
                                    --------        --------       --------       -------
<S>                              <C>             <C>             <C>            <C> 
Prime Fund
  Sold                              2,391,584     370,653,176      1,826,450      281,187,060
  Issued as reinvestment
   of dividends                        86,522      13,067,477         84,068       12,693,332
  Redeemed                         (2,445,697)   (378,881,926)    (1,363,706)    (210,583,290)
                                   ----------   -------------     ----------    -------------
  Net increase                         32,409   $   4,838,727        546,812    $  83,297,102
                                   ==========   =============     ==========    =============

Short-Term Bond Fund
  Sold                              6,074,656      62,871,971      5,136,925       53,696,509
  Issued as reinvestment
   of dividends                       808,935       8,206,104        947,825        9,611,215
  Redeemed                         (4,631,745)    (47,999,711)    (4,819,336)     (50,374,106)
                                   ----------   -------------     ----------    -------------
  Net increase                      2,251,846   $  23,078,364      1,265,414    $  12,933,618
                                   ==========   =============     ==========    =============

Core Bond Fund
  Sold                             15,244,478     161,638,362      8,241,236       89,191,723
  Issued as reinvestment
   of dividends                     1,838,613      19,317,124      1,952,750       20,953,505
  Redeemed                         (6,519,179)    (69,250,775)    (6,340,632)     (67,005,587)
                                   ----------   -------------     ----------    -------------
  Net increase                     10,563,912   $ 111,704,711      3,853,354    $  43,139,641
                                   ==========   =============     ==========    =============

Balanced Fund
  Sold                             16,529,257     200,170,935     17,612,664      191,493,187
  Issued as reinvestment
   of dividends                     2,193,746      27,325,515      1,722,693       19,759,099
  Redeemed                        (12,780,860)   (154,960,358)   (14,889,389)    (160,925,764)
                                   ----------   -------------     ----------    -------------
  Net increase                      5,942,143   $  72,536,092      4,445,968    $  50,326,522
                                   ==========   =============     ==========    =============

Value Equity Fund
  Sold                             42,761,147     585,609,490     39,224,457      451,052,424
  Issued as reinvestment
   of dividends                     8,235,214     120,574,407      5,223,526       65,653,544
  Redeemed                        (47,300,940)   (651,246,978)   (34,020,780)    (390,453,417)
                                   ----------   -------------     ----------    -------------
  Net increase                      3,695,421   $  54,936,919     10,427,203    $ 126,252,551
                                   ==========   =============     ==========    =============

Small Cap Value Equity Fund
  Sold                             10,428,037     129,033,258      9,765,741      102,623,894
  Issued as reinvestment
   of dividends                     1,500,824      20,087,217        539,817       $6,159,231
  Redeemed                        (11,168,365)   (140,771,695)    (9,110,662)     (97,354,772)
                                   ----------   -------------     ----------    -------------
  Net increase                        760,496   $   8,348,780      1,194,896    $  11,428,353
                                   ==========   =============     ==========    =============

International Equity Fund
  Sold                             14,964,804     154,912,942     11,931,440      112,672,627
  Issued as reinvestment
   of dividends                       672,906       7,341,306        412,266        3,955,148
  Redeemed                         (6,611,341)    (68,183,726)    (5,487,562)     (51,810,300)
                                   ----------   -------------     ----------    -------------
  Net increase                      9,026,369   $  94,070,522      6,856,144    $  64,817,475
                                   ==========   =============     ==========    =============
</TABLE> 

                                                                              73
<PAGE>

- --------------------------------------------------------------------------------
Notes to Financial Statements (Continued)
- --------------------------------------------------------------------------------

6.  Foreign Securities

The International Equity Fund invests substantially all of its assets in foreign
securities. The other Funds may also invest in foreign securities, subject to
certain percentage restrictions. Investing in securities of foreign companies
and foreign governments involves special risks and considerations not typically
associated with investing in securities of U.S. companies and the U.S.
Government. These risks include revaluation of currencies and future adverse
political and economic developments. Moreover, securities of many foreign
companies and foreign governments and their markets may be less liquid and their
prices more volatile than those of securities of comparable U.S. companies and
the U.S. Government.

7.  Federal Income Tax Information

At December 31, 1996, the cost of securities and the unrealized appreciation
(depreciation) in the value of investments owned by the Funds, as computed on a
Federal income tax basis, are as follows:

<TABLE> 
<CAPTION> 
                                              Federal           Tax Basis            Tax Basis           Net Unrealized
                                             Income Tax         Unrealized           Unrealized           Appreciation
                                               Cost            Appreciation         Depreciation         (Depreciation)
                                         ---------------     ---------------       -------------      -----------------
<S>                                   <C>                  <C>                  <C>                   <C> 
Prime Fund                             $     260,002,847    $          2,614      $      (10,702)      $         (8,088)
Short-Term Bond Fund                         142,542,031           1,257,932            (240,203)             1,017,729
Core Bond Fund                               348,014,562           6,739,419          (2,019,357)             4,720,062
Balanced Fund                                456,772,419          86,711,748            (616,389)            86,095,359
Value Equity Fund                          1,768,842,158         713,420,243          (1,562,317)           711,857,926
Small Cap Value Equity Fund                  345,263,421         119,498,338          (8,280,372)           111,217,966
International Equity Fund                    309,948,749          59,397,218         (12,108,626)            47,288,592
</TABLE> 

At December 31, 1996, the following Funds have available, for Federal income tax
purposes, unused capital losses:

<TABLE> 
<CAPTION> 
                                         Amount                            Expiration Date
                              ---------------------------------  -------------------------------------
<S>                               <C>                                  <C> 
Prime Fund                                  $     2,082                      December 31, 2003
Prime Fund                                        2,368                      December 31, 2004
Short-Term Bond Fund                            295,197                      December 31, 2004
Core Bond Fund                                1,885,881                      December 31, 2004
International Equity Fund                    11,789,843                      December 31, 2003
</TABLE> 

8.  Line of Credit

On January 11, 1996, the Trust, on behalf of each Fund, entered into a
discretionary line of credit agreement with PNC Bank, N.A. Each Fund may borrow
under the line of credit, provided that the Trust's borrowings do not exceed
$50,000,000 in the aggregate at any one time. Interest is charged based on
outstanding borrowings at the Federal Funds Rate plus .45%. Only the
International Equity Fund utilized the line of credit during the year ended
December 31, 1996. Average daily borrowings for the year ended December 31, 1996
were $3,517,944 and the average interest rate was 5.77%. The maximum borrowing
outstanding during the year ended December 31, 1996 was $9,870,500.

74
<PAGE>
- --------------------------------------------------------------------------------
Report of Independent Accountants
- --------------------------------------------------------------------------------

To the Board of Trustees and Shareholders of the MassMutual Institutional Funds:


We have audited the accompanying statements of assets and liabilities of the
MassMutual Institutional Funds, comprising, respectively, the Prime, Short-Term
Bond, Core Bond, Balanced, Value Equity, Small Cap Value Equity and
International Equity Funds, (the "Funds"), including the portfolios of
investments, as of December 31, 1996, and the related statement of operations
for the year then ended, the statement of changes in net assets for each of the
two years in the period then ended and the financial highlights for each of the
two years in the period then ended and for the period from October 3, 1994
(commencement of operations) through December 31, 1994. These financial
statements and financial highlights are the responsibility of the Funds'
management. Our responsibility is to express an opinion on these financial
statements and financial highlights on our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements and financial
highlights are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements. Our procedures included confirmation of securities owned as of
December 31, 1996, by correspondence with the custodian and brokers. An audit
also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.

In our opinion, the financial statements and financial highlights referred to
above present fairly, in all material respects, the financial position of each
of the respective Funds constituting the MassMutual Institutional Funds as of
December 31, 1996 and the results of their operations for the year then ended,
the changes in their net assets for each of the two years in the period then
ended, and their financial highlights for each of the two years in the period
then ended and for the period from October 3, 1994 (commencement of operations)
through December 31, 1994, in conformity with generally accepted accounting
principles.

                     /s/ Coopers & Lybrand L.L.P.

Springfield, Massachusetts
February 14, 1997

                                                                              75
<PAGE>
 
This report has been prepared for shareholders and may be distributed to others
only if preceded or accompanied by a current prospectus or private placement
memorandum, if applicable, containing more complete information including fees,
risks, and expenses. If used as sales material, this report must be accompanied
by a Performance Update for the most recently completed calendar quarter. The
figures in this report reflect past results. The investment return and principal
value of shares will fluctuate with market conditions so that shares, when
redeemed, may be worth more or less than their original cost. All investments
are subject to certain risks. For example, stocks are sensitive to price changes
and bonds are affected by interest rate fluctuations. Investors should make
investment decisions based on an investment strategy that takes into
consideration investment goals, the length of time money can stay invested, and
risk tolerance. Portfolio changes should not be considered recommendations for
action by individual investors.


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