NML VARIABLE ANNUITY ACCOUNT B
N-30D, 1995-08-23
Previous: NEW ENGLAND POWER CO, 8-K, 1995-08-23
Next: PARK ELECTROCHEMICAL CORP, 10-Q/A, 1995-08-23



<PAGE>   1

                                                       June 30, 1995





SEMI-ANNUAL REPORT

                                                       NML
                                                       Variable
                                                       Annuity
                                                       Account B


I N D I V I D U A L    R E T I R E M E N T    A N N U I T I E S
T A X     D E F E R R E D    A N N U I T I E S
N O N T A X  -  Q U A L I F I E D    A N N U I T I E S



N O R T H W E S T E R N   M U T U A L   S E R I E S   F U N D ,  I N C.



                                                      Northwestern
                                                      Mutual Life(R)
                                                      720 East Wisconsin Avenue
                                                      Milwaukee, Wisconsin 53202
<PAGE>   2



NORTHWESTERN MUTUAL SERIES FUND, INC.


<TABLE>
<CAPTION>

DIRECTORS
<S><C>
James D. Ericson  . . President and Chief Executive Officer, Northwestern Mutual Life,
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Milwaukee
Martin F. Stein . . . . . . . . . . .  Chairman of the Board, EyeCare One Corporation,
 . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Milwaukee
John K. MacIver . . . . . . . . .  Partner, Michael Best & Friedrich Attorneys at Law,
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Milwaukee
Stephen N. Graff . . . . . . . . . . . . . . .  Retired Partner, Arthur Andersen & Co.,
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Milwaukee
William J. Blake  . . . . . . . . . . . . . . .  Chairman, Blake Financial Corporation,
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Milwaukee

OFFICERS

James D. Ericson  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  President
Mark G. Doll  . . . . . . . . . . . . . . . . . . . . . . . Vice President & Treasurer
Merrill C. Lundberg . . . . . . . . . . . . . . . . . . . . . . . . . . . .  Secretary
Gary E. Long  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Controller
</TABLE>

This report is submitted for the general information of owners of Northwestern
Mutual Life Variable Annuity Account B contracts.  This report is not
authorized for distribution to prospective purchasers of variable annuity
contracts unless it is accompanied by an effective prospectus.  Northwestern
Mutual Life variable annuity contracts are sold through individuals who, in
addition to being licensed life insurance agents of Northwestern Mutual Life,
are registered representatives of Northwestern Mutual Investment Services,
Inc., a wholly-owned subsidiary of Northwestern Mutual Life and a registered
broker-dealer under the Securities Exchange Act of 1934 and a member of the
National Association of Securities Dealers, Inc.




Northwestern
Mutual Life(R)
PO Box 3095
Milwaukee WI  53201-3095

Forwarding and Return Postage Guaranteed
Address Correction Requested
<PAGE>   3
 
                           CONTRACT OWNER PRIVILEGES
 
                        FREE TRANSFERS AMONG PORTFOLIOS
 
Same day transfers are permitted among our investment portfolios by FAX
414-299-2632. The appropriate form must be used. A blank form is included at the
end of this report. Additional forms are available from your Northwestern Mutual
Life Agent.
 
                           AUTOMATIC INVESTMENT PLAN
 
Under our Electronic Funds Transfer (EFT) Plan, you can set up regular
investments from your bank checking or NOW account.
 
                      AUTOMATIC DOLLAR COST AVERAGING PLAN
 
This plan automatically transfers money from the Money Market Portfolio to one
or several other portfolios each month. Regular amounts transferred at regular
intervals ensures that more units will be purchased when unit values are low,
and fewer units will be purchased when unit values are high, thereby averaging
our purchase prices.
 
                          SPECIAL WITHDRAWAL PRIVILEGE
 
For contracts with surrender charges, this liquidity feature allows you to avoid
them by withdrawing the lesser of 10% of the contract accumulation value, or
100% of contract earnings. (Contract must be at least one year old and the
accumulation value must be $10,000 minimum as of the most recent contract
anniversary date to qualify.)
 
                       OPTIONAL DISABILITY WAIVER BENEFIT
 
For a small additional premium and subject to meeting underwriting requirements,
considerations will continue to be paid into your contract by Northwestern
Mutual on your behalf should you become totally disabled.
 
                         CONTRACT OWNERS COMMUNICATIONS
 
Confirmation Statements following each transaction and quarterly Summary
Statements provide you with regular investment data. In addition, you will
receive timely economic and market summaries in our quarterly newsletter, VA
Perspectives.
 
CONTACT YOUR NORTHWESTERN MUTUAL AGENT IF YOU WISH TO LEARN MORE ABOUT FREE
TRANSFERS, AUTOMATIC INVESTING, DOLLAR COST AVERAGING, OR ANY OF THE OTHER
PRIVILEGES DESCRIBED ABOVE.
<PAGE>   4
 
TO OUR CONTRACT OWNERS:
 
Last year's rise in interest rates dampened the U.S. economy's strength during
the first half of 1995. While economic indicators showed some underlying
strength, the country's economic foundations revealed some cracks. Among the
economic sectors, housing appeared weaker during the first half, but likely will
get a needed boost from lower interest rates. Fitting with a softer economy,
automobile sales continued to drag. Consumers reacted to a tailing off in the
number of new jobs and the perception that layoffs and corporate downsizing were
affecting economic prosperity. Indeed, this was reflected in declining
manufacturing activity that left businesses shackled with large inventories of
unsold goods. This in turn meant cutbacks in production schedules that further
eroded job growth and consumer incomes.
 
The Federal Reserve Board's fears of a pickup in price levels prompted the
central bank to continue targeting a "soft landing" for the economy. Though the
policy has helped rein in economic growth, many question the virtue of this
philosophy in light of the shaky performance of several economic sectors.
Clearly, signs of inflation have yet to reveal themselves since wages remain
under tight control and prices have yet to reflect the rising costs of raw
materials. Weak consumer demand and a soft economy should ensure that prices
don't rise in the near future.
 
Both the bond and the stock market delivered explosive rallies in the first
half. The possibility of a recession and the prospect of a less restrictive
monetary policy brought droves of investors back to bonds. Similarly, the stock
market reached new highs during the first half of the year. Helped by low
inflation, falling interest rates and strong corporate profits,
investors--especially equity mutual fund buyers--flooded back into the market.
 
To most investors, nothing immediate on the horizon appears to suggest a sharp
reversal in the markets. However, the Fed has proved itself uneasy with a
growing economy. Any significant signs of economic growth could move interest
rates higher once again, hurting both the stock and bond markets. Also,
speculation continues that the stock market may be due for a temporary setback
or correction. Current valuation levels leave little room for disappointment,
especially in earnings shortfalls.
 
                                        1
<PAGE>   5
Index 500 Stock Portfolio

The investment objective of the Index 500 Stock Portfolio is to achieve
investment results that approximate the performance of the Standard & Poor's
500 Composite Stock Price Index.  The portfolio is fully invested in equities.

As noted in the graph, on April 30, 1993, the portfolio was indexed to
approximate the performance of the Standard & Poor's 500 Composite Stock Price
Index.  Prior to April 30, 1993, the portfolio was actively managed.

The Standard & Poor's 500 Composite Stock Price Index is an index of unmanaged 
groups of 500 selected common stocks, most of which are listed on the New York 
Stock Exchange.  The index is heavily weighted toward stocks with large market
capitalizations and represents approximately two-thirds of the total market
value of all domestic common stocks.

The chart below assumes an initial investment of $10,000 made on 6/30/85.
Returns  shown include deductions for management and other fund expenses, and
reinvestment of all dividends.  Returns exclude deductions for separate account
sales loads and account fees.  Past performance is not predictive of future
performance.  Investment return and principal value will fluctuate, so that
your shares, when redeemed, may be worth more or less than their original cost.

Total Returns
For Periods Ended June 30, 1995
<TABLE>
<CAPTION>
                                          One Year    Five Year    Ten Year
<S>                                          <C>         <C>        <C>
Index 500 Stock Portfolio                    25.91%      11.40%     11.80%
S&P 500 Index                                25.90%      12.01%     14.61%
</TABLE>

Plot points on graph:
<TABLE>
<CAPTION>
                                            6/85        6/86       6/87       6/88      6/89
<S>                                        <C>       <C>         <C>        <C>       <C>
Index 500 Stock Portfolio                  $10,000    $12,727    $15,670    $15,130   $16,571
S&P 500 Index                              $10,000    $13,730    $17,094    $15,880   $19,088
</TABLE>

<TABLE>
<CAPTION>
                                            6/90        6/91       6/92       6/93       6/94      6/95
<S>                                        <C>        <C>        <C>        <C>        <C>       <C>
Index 500 Stock Portfolio                  $17,782    $19,471    $21,341    $23,990    $24,225   $30,502
S&P 500 Index                              $22,180    $23,799    $26,989    $30,659    $31,058   $39,101
</TABLE>


A solid vertical line is drawn at 4/30/93 to indicate that the portfolio was
indexed on 4/30/93 and actively managed prior to that date.


                                      2
<PAGE>   6


Growth Stock Portfolio

Speculation that medium and large capitalization companies would turn in
mediocre results in the first half induced the Growth Stock Portfolio to keep
cash positions relatively high.  Caught by surprise in the sharply rising stock
market, the portfolio moved to reduce cash.  However, cash positions still had
a negative effect on returns.

Underweighting in technology and financial stocks also hurt the portfolio's
performance since these were among the few areas that meaningfully outperformed
the overall market.  Moreover, within the various industry sectors, relatively
few stocks performed well.  For example, 66 percent of the market's returns for
the first half of 1995 were derived from just 10 percent of the companies. 
This concentration made it more difficult to exploit the market's rally.

Long term, the portfolio will continue to diversify across industry sectors,
with a specific emphasis on multi-national growth companies.  At present, there
are intriguing opportunities among retailers and selected money center banks.

The Standard & Poor's 500 Composite Stock Price Index is an index of unmanaged
groups of 500 selected common stocks, most of which are listed on the New York
Stock Exchange.  The index is heavily weighted toward stocks with large market
capitalizations and represents approximately two-thirds of the total market
value of all domestic common stocks.

The chart below assumes an initial investment of $10,000 made on 5/3/94
(commencement of operations).  Returns shown include deductions for management
and other fund expenses, and reinvestment of all dividends.  Returns exclude
deductions for separate account sales loads and account fees.  Past performance
is not predictive of future performance.  Investment return and principal value
will fluctuate, so that your shares, when redeemed, may be worth more or less
than their original cost.


Total Returns
For Periods Ended June 30, 1995
<TABLE>
<CAPTION>
                                                          Since
                                            One Year    Inception
<S>                                          <C>         <C>
Growth Stock Portfolio                       17.62%      13.89%
S&P 500 Index                                25.90%      20.35%
</TABLE>

Plot points on graph:
<TABLE>
<CAPTION>
                                           5/3/94      6/94       6/95
<S>                                        <C>         <C>       <C>
Growth Stock Portfolio                     $10,000     $9,884    $11,626
S&P 500 Index                              $10,000     $9,845    $12,394
</TABLE>


                                      3
<PAGE>   7

Growth and Income Stock Portfolio

The largest capitalization stocks led the market rally, with technology stocks
in particular providing substantial gains.

Suffering from the narrow focus of the market and the emphasis on near term
corporate earnings momentum, the Growth and Income Portfolio underperformed. 
However, this narrow focus tends to be short lived.

In keeping with its management objectives, the fund continues to emphasize
attractive sectors such as capital goods and communications, which currently
appear to be undervalued.  These stocks should benefit once the market broadens
out.  The fund is fully invested and the portfolio will seek the best values
over a long cycle.

The Standard & Poor's 500 Composite Stock Price Index is an index of unmanaged
groups of 500 selected common stocks, most of which are listed on the New York
Stock Exchange.  The index is heavily weighted toward stocks with large market
capitalizations and represents approximately two-thirds of the total market
value of all domestic common stocks. 

The chart below assumes an initial investment of $10,000 made on 5/3/94
(commencement of operations).  Returns shown include deductions for management
and other fund expenses, and reinvestment of all dividends.  Returns exclude
deductions for separate account sales loads and account fees.  Past performance
is not predictive of future performance.  Investment return and principal value
will fluctuate, so that your shares, when redeemed, may be worth more or less
than their original cost.

Total Returns
For Periods Ended June 30, 1995

<TABLE>
<CAPTION>
                                            One Year   Inception
<S>                                          <C>        <C>
Growth and Income Stock Portfolio            20.13%     14.97%
S&P 500 Index                                25.90%     20.35%
</TABLE>

Plot points on graph:
<TABLE>
<CAPTION>
                                           5/3/94       6/94      6/95
<S>                                        <C>        <C>
Growth and Income Stock Portfolio          $10,000     $9,784    $11,754
S&P 500 Index                              $10,000     $9,845    $12,394
</TABLE>


                                      4
<PAGE>   8

Aggressive Growth Stock Portfolio

The weaker U.S. dollar continued to hamstring the growth of many smaller
companies in the first half of 1995.  Compared to larger corporations which tend
to do better in this environment, the primarily small cap stocks in the
portfolio had slower relative earnings growth during most of this period. 
Toward the end of the period, some of the trends began to reverse; a
strengthening dollar and an upturn in small cap stocks.  This bodes well for
second half performance.

The technology sector flourished as the best performing sector in the
portfolio.  Growth in this sector has been spurred by the drive to increase
productivity in the workplace, growing consumer demand for PCs, and sales of
equipment overseas where markets are growing rapidly.

Portfolio strategy continues to concentrate on the rapidly growing technology
and health care sectors.  However, exposure to the transportation and temporary
help sectors was cut back somewhat, along with selected health care issues. 
Moreover, given the robust growth in technology, the portfolio may restructure
some technology positions.

Since the portfolio invests primarily in small capitalization issues, the
indices that best reflect the portfolio's performance are Wilshire Next 1750
Index and Wilshire Small Cap Index.

The Wilshire Next 1750 is an unmanaged, equally weighted index.  Included in
this index are those stocks which are ranked 750 to 2500 by market
capitalization in the Wilshire 5000.  The largest sectors represented in this
index are financial services, consumer services and basic industry.  Its
average market capitalization is approximately $400 million.

The Wilshire Small Cap Index is a subset of the Wilshire Next 1750 and includes
250 stocks chosen based upon their size, sector and liquidity characteristics. 
Each stock is equally weighted in this unmanaged index.  The average market
capitalization is approximately $550 million as of June 30, 1995.  The largest
sector weightings include financial services, consumer services and technology.

On May 3, 1994, the Northwestern Mutual Aggressive Growth Stock Fund,
Inc. (the "Fund") merged into the Northwestern Mutual Series Fund, Inc.
Aggressive Growth Stock Portfolio (the "Portfolio").  The Portfolio had no
assets prior to the merger.  After the merger, the assets of the Portfolio were
those of the  Fund.  The investment objectives, policies, management and
expenses of the Portfolio are identical to those of the Fund.  Accordingly, the
performance of the Fund prior to the merge is included with the performance of
the Portfolio in the graph and total return figures above.           

The chart below assumes an initial investment of $10,000 made on 11/30/90
(commencement of the Funds's operations).  Returns shown include deductions for
management and other fund expenses, and reinvestment of all dividends.  Returns
exclude deductions for separate account sales loads and account fees.  Past
performance is not predictive of future performance.  Investment return and
principal value will fluctuate, so that your shares, when redeemed, may be
worth more or less than their original cost.


Total Returns
For Periods Ended June 30, 1995
<TABLE>
<CAPTION>
                                                         Since
                                            One Year   Inception
<S>                                          <C>        <C>
Aggressive Growth Stock Portfolio            26.32%     21.55%
Wilshire Small Cap                           15.10%     19.98%
Whilshire Next 1750                          21.94%     21.04%
</TABLE>

Plot points on graph:
<TABLE>
<CAPTION>
                                            11/90       6/91       6/92       6/93       6/94      6/95
<S>                                        <C>        <C>        <C>        <C>        <C>      <C>
Aggressive Growth Stock Portfolio          $10,000    $12,593    $13,994    $17,133    $19,354   $24,448
Wilshire Small Cap                         $10,000    $13,189    $15,522    $19,336    $20,012   $23,034
Whilshire Next 1750                        $10,000    $13,186    $15,086    $19,108    $19,670   $23,986
</TABLE>


                                      5
<PAGE>   9

International Equity Stock Portfolio

Foreign markets experienced anemic growth in the first half of the year.  Trade
frictions with Japan, the aftermath of the Mexican crisis and a softer dollar
kept much of the capital away from overseas markets.  However, recent trends
point to a more optimistic investment environment abroad.  Interest rates in
the U.S. and Japan are lower, while inflation rates continue to slide globally,
and the battered U.S. dollar appears to be stabilizing.

Among the various foreign markets, a troubled Japanese economy consistently
under-performed during the first half of 1995.  This was largely due to its
continuing problems with deflation, falling economic activity, and a depressed
real estate market that haunted the banking industry.  In no small part due to
this turbulent economic environment, the portfolio maintained its low exposure
to Japan.  The portfolio will continue to focus attention on investment
opportunities in the European markets.

Strategically, little change has occurred in the portfolio's geographic and
industry exposure with current cash and equivalents weighting of less than 10
percent.  Similarly, the fund continues to steer clear of currency hedging. 
Instead, look to the portfolio to maintain a long-term horizon and to continue
to exploit favorable opportunities in world markets.

As depicted in the graph, the International Equity Portfolio is compared
against the Morgan Stanley Capital International EAFE ("Europe-Australia-Far
East") Index.  The index is composed of approximately 1100 companies in 20
countries in Europe and the Pacific Basin.  The objective of the index is to
reflect the movements of stock markets in these countries by representing an
unmanaged (indexed) portfolio within each country.  The indices are constructed
so that companies chosen represent about 60% of market capitalization in each
market, industry composition of the market is reflected and a cross section of
large, medium, and small cap stocks is included taking into account liquidity
concerns.  The index is calculated in U.S.$.

On May 3, 1994, the Northwestern Mutual International Equity Fund, Inc. (the
"Fund") merged into the Northwestern Mutual Series Fund, Inc. International
Equity Portfolio (the "Porfolio").  The Portfolio had no assets prior to the
merger.  After the merger, the assets of the Portfolio were those of the Fund. 
The investment objectives, policies, management and expenses of the Portfolio
are identical to those of the Fund.  Accordingly, the performance of the Fund
prior to the merge is included with the performance of the Portfolio in the
graph and total return figures above.

The chart below assumes an initial investment of $10,000 made on 4/30/93
(commencement of the Funds's operations).  Returns shown include deductions for
management and other fund expenses, and reinvestment of all dividends.  Returns
exclude deductions for separate account sales loads and account fees.  Past
performance is not predictive of future performance.  Investment return and
principal value will fluctuate, so that your shares, when redeemed, may be
worth more or less than their original cost.


Total Returns
For Periods Ended June 30, 1995
<TABLE>
<CAPTION>
                                                        Since
                                            One Year   Inception
<S>                                          <C>       <C>
International Equity Stock Portfolio         10.96%     14.80%
EAFE                                          2.00%      9.51%
</TABLE>

Plot points on graph:
<TABLE>
<CAPTION>
                                             4/93       6/93       6/94       6/95
<S>                                        <C>       <C>        <C>         <C>
International Equity Stock Portfolio       $10,000    $10,118    $12,155    $13,487
EAFE                                       $10,000    $10,202    $11,936    $12,175
</TABLE>


                                      6

<PAGE>   10

Select Bond Portfolio

An unexpected bond market rally, precipitated by a slowing economy and lack of
inflation pressure, caught investors by surprise.  As a result, bearish
investors found themselves underowned and were effectively forced to buy bonds
as the market rallied.  The drop in yields was dramatic.  Two year Treasury
rates fell from 7.69 percent to 5.79 percent (190 basis points), while 30-year
Treasury rates fell from 7.88 percent to 6.62 percent (126 basis points). 
There appears to be little evidence that interest rates will rise significantly
during the next few months.

The average maturity in the portfolio became slightly long early in the year,
and remained that way for most of the period.  This was in response to
excessive bearishness by most investors and an economy likely to slow from last
year's fast pace.  Corporate bonds were the best performing fixed-income asset
class, spurred on by limited new issuance and the improving credit quality of
many companies.  The portfolio weightings at mid-year are 12 percent cash, 13
percent Treasuries, 23 percent mortgage-backed and 52 percent corporate.      

Since the portfolio invests broadly in U.S. Government, mortgage and corporate
bonds, the graph depicts an appropriate comparison to the Merrill Lynch
Domestic Master Index.  The index is an unmanaged market value weighted index
comprised of U.S. Government, mortgage and investment-grade corporate bonds. 
The index measures the income provided by, and the price changes of, the
underlying securities.

The chart below assumes an initial investment of $10,000 made on 6/30/85.
Returns  shown include deductions for management and other fund expenses, and
reinvestment of all dividends.  Returns exclude deductions for separate account
sales loads and account fees.  Past performance is not predictive of future
performance.  Investment return and principal value will fluctuate, so that
your shares, when redeemed, may be worth more or less than their original cost.


Total Returns
For Periods Ended June 30, 1995

<TABLE>
<CAPTION>
                                            One Year    Five Year   Ten Year
<S>                                          <C>        <C>        <C>
Select Bond Portfolio                        12.78%      10.11%     10.32%
Merrill Lynch Domestic Master Index          12.59%       9.56%     10.01%
</TABLE>

Plot points on graph:
<TABLE>
<CAPTION>
                                            6/85        6/86       6/87       6/88      6/89
<S>                                        <C>        <C>        <C>        <C>        <C>
Select Bond Portfolio                      $10,000    $12,404    $12,898    $13,778    $15,502
Merrill Lynch Domestic Master Index        $10,000    $11,995    $12,640    $13,630    $15,325
</TABLE>

<TABLE>
<CAPTION>
                                             6/90       6/91       6/92       6/93       6/94      6/95
<S>                                        <C>        <C>        <C>        <C>        <C>        <C>
Select Bond Portfolio                      $16,492    $18,277    $21,035    $23,724    $23,669    $26,692
Merrill Lynch Domestic Master Index        $16,447    $18,238    $20,818    $23,301    $23,060    $25,962
</TABLE>


                                      7
<PAGE>   11

High Yield Bond Portfolio

The High Yield Bond Portfolio benefited from generally declining interest
rates, posting strong gains in the first half.  However, the performance of the
high yield market lagged the more interest rate sensitive Treasury and
investment grade bond markets during the recent bond rally.

Concern regarding an economic slowdown caused leveraged and cyclical issues to
trail the market in response to potentially lower corporate earnings prospects. 
New issue supply was heavy in the second quarter causing yields on new issues to
increase.  The fund's cash allocation was maintained in a range of three to
four percent.  The portfolio is broadly diversified and actively traded based
on relative value relationships.

The Salomon Brothers High Yield Market Index includes cash-pay and
deferred-interest corporate bonds with remaining maturities of at least one
year.  All bonds in the index are publicly placed, have a fixed coupon and are
non-convertible.  Bonds issued under Rule 144A are added after the issuer has
registered the security with the Securities and Exchange Commission.  The index
is an unmanaged market value weighted index and measures the income provided
by, and the price changes of, the underlying securities.

The chart below assumes an initial investment of $10,000 made on 5/3/94
(commencement of operations).  Returns shown include deductions for management
and other fund expenses, and reinvestment of all dividends.  Returns exclude
deductions for separate account sales loads and account fees.  Past performance
is not predictive of future performance.  Investment return and principal value
will fluctuate, so that your shares, when redeemed, may be worth more or less
than their original cost.


Total Returns
For Periods Ended June 30, 1995
<TABLE>
<CAPTION>
                                                         Since
                                            One Year   Inception
<S>                                          <C>       <C>
High Yield Bond Portfolio                    13.66%     12.73%
Salomon Brothers High Yield Market Index     13.90%     12.33%
</TABLE>

Plot points on graph:
<TABLE>
<CAPTION>
                                            5/3/94      6/94      6/95
<S>                                        <C>        <C>        <C>
High Yield Bond Portfolio                  $10,000    $10,110    $11,490
Salomon Brothers High Yield Market Index   $10,000    $10,046    $11,442
</TABLE>

MONEY MARKET PORTFOLIO

Consistent with interest rates in general, money market rates fell during the
first half of the year.  Fueled by a slowing economy and the expectations of a
Federal Reserve rate decrease, rates remained low.  Through the Fed took no
action during most of the period, it did lower rates on Federal Funds by 25
basis points on July 6.

A slowing economy has lured the market into expecting more rate cuts.  Already,
another 50 basis point rate cut is priced into the Treasury market.
                      

                                      8
<PAGE>   12

Balanced Portfolio

Throughout the first half of the year, portfolio strategy became more
aggressive, with cash dropping and exposure to both stocks and bonds
increasing.  Currently, the asset mix of the Balanced Portfolio stands at 53
percent stocks, 36 percent bonds, and 11 percent cash.

The rationale behind this more fully invested position lies in the low
inflation rate, a slowing economy, and a change in the Federal Reserve policy
away from the restrictive position of last year.  At least in the near term,
prospects look good for both the stock and bond markets.

The bond component of the portfolio adopted a slightly more aggressive position
during the first half with greater exposure to mortgage securities.  In
addition, the portfolio continued to emphasize stocks, which were the best
performing asset class during the period.

In the graph, the portfolio is compared against three indices representing the
three major components of the portfolio:  equities, fixed income and cash
equivalent investments.

The Merrill Lynch Domestic Master Index is an unmanaged market value weighted
index comprised of U.S. Government, mortgage and investment-grade corporate
bonds.  The index measures the income provided by, and the price changes of,
the underlying securities.  

The Standard & Poor's 500 Composite Stock Price Index is an index of unmanaged
groups of 500 selected common stocks, most of which are listed on the New York
Stock Exchange.  The index is heavily weighted toward stocks with large market
capitalizations and represents approximately two-thirds of the total market
value of all domestic common stocks.

The chart below assumes an initial investment of $10,000 made on 6/30/85.
Returns  shown include deductions for management and other fund expenses, and
reinvestment of all dividends.  Returns exclude deductions for separate account
sales loads and account fees.  Past performance is not predictive of future
performance.  Investment return and principal value will fluctuate, so that
your shares, when redeemed, may be worth more or less than their original cost.


Total Returns
For Periods Ended June 30, 1995

<TABLE>
<CAPTION>
                                            One Year    Five Year   Ten Year
<S>                                          <C>        <C>         <C>
Balanced Portfolio                           18.17%     10.40%      11.18%
S&P 500 Index                                25.90%     12.01%      14.61%
Merrill Lynch Domestic Master Index          12.59%      9.56%      10.01%
Merrill Lynch 91-Day Treasury Bill            5.51%      4.99%       6.19%
</TABLE>

Plot points on graph:
<TABLE>
<CAPTION>
                                             6/85      6/86        6/87       6/88       6/89
<S>                                        <C>       <C>         <C>        <C>        <C>
Balanced Portfolio                         $10,000    $12,725    $14,786    $15,042    $16,440
S&P 500 Index                              $10,000    $13,730    $17,094    $15,880    $19,088
Merrill Lynch Domestic Master Index        $10,000    $11,995    $12,640    $13,630    $15,325
Merrill Lynch 91-Day Treasury Bill         $10,000    $10,761    $11,424    $12,147    $13,175
</TABLE>


<TABLE>
<CAPTION>
                                            6/90       6/91        6/92      6/93       6/94       6/95
<S>                                        <C>       <C>         <C>        <C>        <C>        <C>
Balanced Portfolio                         $17,592    $19,373    $21,563    $24,211    $24,417    $28,854
S&P 500 Index                              $22,180    $23,799    $26,989    $30,659    $31,058    $39,101
Merrill Lynch Domestic Master Index        $16,447    $18,238    $20,818    $23,301    $23,060    $25,962
Merrill Lynch 91-Day Treasury Bill         $14,294    $15,375    $16,171    $16,717    $17,280    $18,233
</TABLE>


                                      9
<PAGE>   13
 
                                   ACCOUNT B
 
The annual report of Northwestern Mutual Series Fund Inc., is included because
all payments to Account B are invested in one or more Portfolios of this Fund.
The Series Fund is a mutual fund currently offering shares only to The
Northwestern Mutual Life Insurance Company and its separate investment accounts.
 
                                  THE NORTHWESTERN MUTUAL LIFE INSURANCE COMPANY
 
                                           James D. Ericson, President and
C.E.O.
 
                         NML VARIABLE ANNUITY ACCOUNT B
                            ACCUMULATION UNIT VALUES
 
<TABLE>
<CAPTION>
                                                                                          CONTRACTS ISSUED
                                                       CONTRACTS ISSUED             ON OR AFTER DECEMBER 17, 1981
                                                   BEFORE DECEMBER 17, 1981           AND BEFORE MARCH 31, 1995
                                                -------------------------------    -------------------------------
                  DIVISION                      12/31/94    6/30/95    % CHANGE    12/31/94    6/30/95    % CHANGE
---------------------------------------------   --------    -------    --------    --------    -------    --------
<S>                                             <C>         <C>        <C>         <C>         <C>        <C>
Index 500 Stock..............................    $1.530     $1.828       19.51%     $1.499     $1.787       19.21%
Growth Stock.................................       N/A        N/A         N/A       1.006      1.145       13.78%
Growth and Income Stock......................       N/A        N/A         N/A       0.994      1.157       16.42%
Aggressive Growth Stock......................     2.042      2.353       15.21%      2.001      2.300       14.92%
International Equity.........................     1.230      1.327        7.91%      1.220      1.313        7.65%
Select Bond..................................     5.569      6.204       11.41%      5.217      5.798       11.13%
High Yield Bond..............................       N/A        N/A         N/A       1.022      1.132       10.84%
Money Market.................................     2.206      2.262        2.52%      2.067      2.114        2.27%
Balanced.....................................     3.685      4.206       14.14%      3.453      3.932       13.86%
</TABLE>
 
<TABLE>
<CAPTION>
                                                       CONTRACTS ISSUED                   CONTRACTS ISSUED
                                                  ON OR AFTER MARCH 31, 1995         ON OR AFTER MARCH 31, 1995
                                                      FRONT LOAD VERSION                  BACK LOAD VERSION
                                                -------------------------------    -------------------------------
                  DIVISION                      3/31/95     6/30/95    % CHANGE    3/31/95     6/30/95    % CHANGE
---------------------------------------------   --------    -------    --------    --------    -------    --------
<S>                                             <C>         <C>        <C>         <C>         <C>        <C>
Index 500 Stock..............................    $1.000     $1.094        9.39%     $1.637     $1.787        9.16%
Growth Stock.................................     1.000      1.060        5.99%      1.082      1.145        5.77%
Growth and Income Stock......................     1.000      1.071        7.12%      1.083      1.157        6.90%
Aggressive Growth Stock......................     1.000      1.086        8.57%      2.123      2.300        8.34%
International Equity.........................     1.000      1.080        8.03%      1.218      1.313        7.80%
Select Bond..................................     1.000      1.062        6.19%      5.471      5.798        5.97%
High Yield Bond..............................     1.000      1.064        6.38%      1.067      1.132        6.16%
Money Market.................................     1.000      1.013        1.35%      2.090      2.114        1.13%
Balanced.....................................     1.000      1.073        7.27%      3.673      3.932        7.04%
</TABLE>
 
N/A -- Not Available. These divisions are currently not available to
       contractholders on contracts issued before December 17, 1981.
 
Note: Accumulation Unit Values are rounded to the nearest one-thousandth.
 
AN INVESTMENT IN THE MONEY MARKET PORTFOLIO IS NEITHER INSURED NOR GUARANTEED BY
THE U.S. GOVERNMENT AND THERE CAN BE NO ASSURANCE THAT THE PORTFOLIO WILL BE
ABLE TO MAINTAIN A STABLE NET ASSET VALUE OF $1.00 PER SHARE.
 
Note: "Standard and Poor's 500" and "S&P 500(R)" are trademarks of McGraw-Hill,
      Inc. and have been licensed for use by The Northwestern Mutual Life
      Insurance Company. The Series Funds and its Portfolios are not sponsored,
      endorsed, sold or promoted by Standard & Poor's, and Standard & Poor's
      makes no representation regarding the advisability of investing in them.
 
                                       10
<PAGE>   14
 
                         NML VARIABLE ANNUITY ACCOUNT B
                      STATEMENT OF ASSETS AND LIABILITIES
                                 JUNE 30, 1995
                                 (IN THOUSANDS)
 
<TABLE>
<S>                                                                            <C>           <C>
ASSETS
  Investments at Market Value:
     Northwestern Mutual Series Fund, Inc.
       Index 500 Stock
          173,845 shares (cost $205,188).....................................  $   261,636
       Growth Stock
          22,026 shares (cost $22,860).......................................       24,998
       Growth and Income Stock
          49,881 shares (cost $51,450).......................................       57,063
       Aggressive Growth Stock
          145,804 shares (cost $253,708).....................................      335,057
       International Equity
          193,027 shares (cost $231,301).....................................      247,268
       Select Bond
          116,565 shares (cost $133,975).....................................      134,398
       High Yield Bond
          13,083 shares (cost $13,355).......................................       13,645
       Money Market
          77,730 shares (cost $77,730).......................................       77,730
       Balanced
          1,001,020 shares (cost $1,312,752).................................    1,455,483   $ 2,607,278
                                                                               -----------
  Due from Sale of Fund Shares............................................................         4,514
  Due from Northwestern Mutual Life Insurance Company.....................................           214
                                                                                             -----------
          Total Assets....................................................................   $ 2,612,006
                                                                                              ==========
LIABILITIES
  Due to Participants.....................................................................   $     1,401
  Due to Northwestern Mutual Life Insurance Company.......................................         4,514
  Due on Purchase of Fund Shares..........................................................           214
                                                                                             -----------
          Total Liabilities...............................................................   $     6,129
                                                                                             -----------
EQUITY (Note 7)
  Contracts Issued Prior to December 17, 1981.............................................   $    80,061
  Contracts Issued On or After December 17, 1981 and Before March 31, 1995................     2,492,331
  Contracts Issued On or After March 31, 1995:
     Front Load Version...................................................................         8,642
     Back Load Version....................................................................        24,843
                                                                                             -----------
          Total Equity....................................................................     2,605,877
                                                                                             -----------
          Total Liabilities and Equity....................................................   $ 2,612,006
                                                                                              ==========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared From Unaudited Figures)
 
                                       11
<PAGE>   15
 
                         NML VARIABLE ANNUITY ACCOUNT B
                 STATEMENT OF OPERATIONS AND CHANGES IN EQUITY
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                         INDEX 500                   GROWTH STOCK
                                           COMBINED                   STOCK DIVISION                  DIVISION #
                                  ---------------------------   ---------------------------   ---------------------------
                                                                                                             EIGHT MONTHS
                                  PERIOD ENDED    YEAR ENDED    PERIOD ENDED    YEAR ENDED    PERIOD ENDED      ENDED
                                    JUNE 30,     DECEMBER 31,     JUNE 30,     DECEMBER 31,     JUNE 30,     DECEMBER 31,
                                  ------------   ------------   ------------   ------------   ------------   ------------
                                      1995           1994           1995           1994           1995           1994
                                  ------------   ------------   ------------   ------------   ------------   ------------
<S>                               <C>            <C>            <C>            <C>            <C>            <C>
INVESTMENT INCOME
  Dividend Income................  $   59,210     $  219,223      $  2,545       $  9,672       $    188       $    165
  Annuity Rate and Expense
    Guarantees...................      14,638         26,109         1,362          2,324            114             52
                                  ------------   ------------   ------------   ------------   ------------   ------------
  Net Investment Income (Loss)...      44,572        193,114         1,183          7,348             74            113
                                  ------------   ------------   ------------   ------------   ------------   ------------
REALIZED AND UNREALIZED GAIN
  (LOSS) ON INVESTMENTS
  Realized Gain on Investments...       1,864         17,722           221            534              1             --
  Unrealized Appreciation
    (Depreciation) of Investments
    During the Year..............     256,626       (226,913)       39,099         (7,574)         2,278           (138)
                                  ------------   ------------   ------------   ------------   ------------   ------------
  Net Gain (Loss) on
    Investments..................     258,490       (209,191)       39,320         (7,040)         2,279           (138)
                                  ------------   ------------   ------------   ------------   ------------   ------------
  Increase (Decrease) in Equity
    Derived from Investment
    Activity.....................     303,062        (16,077)       40,503            308          2,353            (25)
                                  ------------   ------------   ------------   ------------   ------------   ------------
EQUITY TRANSACTIONS
  Contract Owners' Net
    Payments.....................     167,849        389,478        18,095         37,543          5,641          4,757
  Annuity Payments...............      (3,624)        (4,241)         (236)          (476)            (8)            (1)
  Surrenders and Other (net).....     (95,600)      (121,978)       (7,229)        (8,669)          (191)           (85)
  Transfers from Other
    Divisions....................     115,860        254,710        12,742         16,836          5,621          7,898
  Transfers to Other Divisions...    (115,860)      (254,710)       (7,576)       (26,080)          (804)          (187)
                                  ------------   ------------   ------------   ------------   ------------   ------------
Increase (Decrease) in Equity
  Derived from Equity
  Transactions...................      68,612        263,259        15,796         19,154         10,259         12,382
                                  ------------   ------------   ------------   ------------   ------------   ------------
Net Increase (Decrease)
  in Equity......................     371,674        247,182        56,299         19,462         12,612         12,357
Equity
  Beginning of Year..............   2,234,203      1,987,021       205,214        185,752         12,357              0
                                  ------------   ------------   ------------   ------------   ------------   ------------
  End of Year....................  $2,605,877     $2,234,203      $261,513       $205,214       $ 24,969       $ 12,357
                                  ===========    ===========    ===========    ===========    ===========    ==========
</TABLE>
 
# The initial investments in the Growth Stock and Growth and Income Stock
  Divisions were made on May 3, 1994.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       12
<PAGE>   16
 
                         NML VARIABLE ANNUITY ACCOUNT B
                 STATEMENT OF OPERATIONS AND CHANGES IN EQUITY
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
       GROWTH & INCOME                  AGGRESSIVE GROWTH               INTERNATIONAL EQUITY
      STOCK DIVISION #                   STOCK DIVISION                       DIVISION                    SELECT BOND DIVISION
-----------------------------     -----------------------------     -----------------------------     -----------------------------
                 EIGHT MONTHS
PERIOD ENDED        ENDED         PERIOD ENDED      YEAR ENDED      PERIOD ENDED      YEAR ENDED      PERIOD ENDED      YEAR ENDED
  JUNE 30,       DECEMBER 31,       JUNE 30,       DECEMBER 31,       JUNE 30,       DECEMBER 31,       JUNE 30,       DECEMBER 31,
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
    1995             1994             1995             1994             1995             1994             1995             1994
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
<S>              <C>              <C>              <C>              <C>              <C>              <C>              <C>
  $    418         $    513         $  1,785         $  1,607         $  1,696         $  6,775         $  3,550         $ 16,145
       269              132            1,763            2,503            1,449            2,224              754            1,513
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
       149              381               22             (896)             247            4,551            2,796           14,632
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
        10               --              662              297            1,981               96              216            1,449
     6,434             (820)          40,969           10,133           15,366           (9,711)          10,243          (21,331)
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
     6,444             (820)          41,631           10,430           17,347           (9,615)          10,459          (19,882)
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
     6,593             (439)          41,653            9,534           17,594           (5,064)          13,255           (5,250)
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
    10,703           12,083           30,652           61,047           20,970           76,394            8,563           25,069
       (16)              (5)             (90)            (114)             (83)            (120)            (152)            (382)
      (561)            (579)          (7,917)          (6,864)          (8,103)          (5,559)          (5,644)          (9,838)
    10,798           21,072           29,037           51,753           12,568           86,072            5,652            7,671
    (2,009)            (534)          (9,587)         (15,127)         (27,655)         (14,282)          (5,508)         (30,044)
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
    18,902           32,037           42,095           90,695           (2,303)         142,505            2,911           (7,524)
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
    25,495           31,598           83,748          100,229           15,291          137,441           16,166          (12,774)
    31,598                0          251,206          150,977          231,900           94,459          118,116          130,890
------------     ------------     ------------     ------------     ------------     ------------     ------------     ------------
  $ 57,093         $ 31,598         $334,954         $251,206         $247,191         $231,900         $134,282         $118,116
===========      ==========       ===========      ===========      ===========      ===========      ===========      ===========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       13
<PAGE>   17
 
                         NML VARIABLE ANNUITY ACCOUNT B
                 STATEMENT OF OPERATIONS AND CHANGES IN EQUITY
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                              HIGH YIELD BOND
                                                 DIVISION#           MONEY MARKET DIVISION        BALANCED DIVISION
                                          -----------------------   -----------------------   -------------------------
                                           PERIOD    EIGHT MONTHS    PERIOD                     PERIOD
                                           ENDED        ENDED        ENDED      YEAR ENDED      ENDED       YEAR ENDED
                                          JUNE 30,   DECEMBER 31,   JUNE 30,   DECEMBER 31,    JUNE 30,    DECEMBER 31,
                                          --------   ------------   --------   ------------   ----------   ------------
                                            1995         1994         1995         1994          1995          1994
                                          --------   ------------   --------   ------------   ----------   ------------
<S>                                       <C>        <C>            <C>        <C>            <C>          <C>
INVESTMENT INCOME
  Dividend Income........................ $    494      $  408      $  2,075        2,486     $   46,459    $  181,452
  Annuity Rate and Expense Guarantees....       63          35           440          750          8,424        16,576
                                          --------   ------------   --------   ------------   ----------   ------------
  Net Investment Income..................      431         373         1,635        1,736         38,035       164,876
                                          --------   ------------   --------   ------------   ----------   ------------
 
REALIZED AND UNREALIZED GAIN (LOSS) ON
  INVESTMENTS
  Realized Gain (Loss) on Investments....        2          14            --           --         (1,229)       15,332
  Unrealized Appreciation (Depreciation)
    of Investments During the Year.......      624        (333)           --           --        141,613      (197,139)
                                          --------   ------------   --------   ------------   ----------   ------------
  Net Gain (Loss) on Investments.........      626        (319)            0            0        140,384      (181,807)
                                          --------   ------------   --------   ------------   ----------   ------------
  Increase (Decrease) in Equity Derived
    from Investment Activity.............    1,057          54         1,635        1,736        178,419       (16,931)
                                          --------   ------------   --------   ------------   ----------   ------------
 
EQUITY TRANSACTIONS
  Contract Owners' Net Payments..........    3,158       3,137        15,914       35,360         54,152       134,088
  Annuity Payments.......................       (6)         (2)          (29)         (54)        (3,004)       (3,087)
  Surrenders and Other (net).............     (162)       (245)       (9,884)     (11,859)       (55,909)      (78,280)
  Transfers from Other Divisions.........    3,447       5,400        23,199       37,145         12,796        20,863
  Transfers to Other Divisions...........   (1,327)       (882)      (21,822)     (46,086)       (39,572)     (121,488)
                                          --------   ------------   --------   ------------   ----------   ------------
Increase (Decrease) in Equity
  Derived from Equity Transactions.......    5,110       7,408         7,378       14,506        (31,537)      (47,904)
                                          --------   ------------   --------   ------------   ----------   ------------
Net Increase (Decrease) in Equity........    6,167       7,462         9,013       16,242        146,882       (64,835)
Equity
  Beginning of Year......................    7,462           0        68,690       52,448      1,307,660     1,372,495
                                          --------   ------------   --------   ------------   ----------   ------------
  End of Year............................ $ 13,629      $7,462      $ 77,703     $ 68,690     $1,454,542    $1,307,660
                                           =======   ===========    ========   ===========     =========   ===========
</TABLE>
 
# The initial investment in the High Yield Bond Division was made on May 3,
  1994.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       14
<PAGE>   18
 
                         NML VARIABLE ANNUITY ACCOUNT B
                         NOTES TO FINANCIAL STATEMENTS
                                 JUNE 30, 1995
 
Note 1 -- NML Variable Annuity Account B (the "Account") is registered as a unit
investment trust under the Investment Company Act of 1940 and is a segregated
asset account of The Northwestern Mutual Life Insurance Company ("Northwestern
Mutual Life") used to fund variable annuity contracts for tax-deferred
annuities, individual retirement annuities and non-qualified plans. Principal
accounting policies are summarized below.
 
Note 2 -- All assets of each Division of the Account are invested in shares of
the corresponding Portfolio of Northwestern Mutual Series Fund, Inc. (the
"Fund"). The shares are valued at the Fund's offering and redemption price per
share.
 
The Fund is an open-end investment company registered under the Investment
Company Act of 1940.
 
Note 3 -- Annuity reserves are based on published annuity tables with age
adjustment and benefit payments which reflect actual investment experience. For
variable payment plans issued prior to January 1, 1974, annuity reserves are
based on the 1955 American Annuity Table with assumed interest rates of 3%,
3 1/2% or 5%. For variable payment plans issued on or after January 1, 1974 and
before January 1, 1985, annuity reserves are based on the 1971 Individual
Annuity Table with assumed interest rates of 3 1/2% or 5%. For variable payment
plans issued on or after January 1, 1985, annuity reserves are based on the 1983
Table a with assumed interest rates of 3 1/2% or 5%.
 
Note 4 -- Dividend income from the Fund is recorded on the record date of the
dividends. Transactions in Fund shares are accounted for on the trade date. The
basis for determining cost on sale of Fund shares is identified cost. Purchases
and sales of Fund shares for the period ended June 30, 1995 by each Division are
shown below:
 
<TABLE>
<CAPTION>
                          PURCHASES       SALES
                         ------------  -----------
<S>                      <C>           <C>
Index 500 Stock
  Division.............. $ 19,502,770  $ 2,470,889
Growth Stock Division...   10,360,006        8,658
Growth & Income Stock
  Division..............   19,188,309      132,860
Aggressive Growth
  Division..............   43,574,848    1,497,660
International Equity
  Division..............   10,753,958   12,807,165
Select Bond Division....    9,245,877    3,688,199
High Yield Bond
  Division..............    5,966,738      419,040
Money Market Division...   20,745,182   11,808,145
Balanced Division.......   59,419,477   53,152,385
</TABLE>
 
Note 5 -- A deduction for annuity rate and expense guarantees is determined
daily and paid to Northwestern Mutual Life as compensation for assuming the risk
that annuity payments will continue for longer periods than anticipated because
the annuitants as a group live longer than expected, and the risk that the
charges made by Northwestern Mutual Life may be insufficient to cover the actual
costs incurred in connection with the contracts.
 
For contracts issued on or after March 31, 1995, for the Front Load Version and
the Back Load Version, the deduction for annuity rate and expense guarantees is
determined daily at annual rates of 4/10 of 1% and 1 1/4%, respectively, of the
net assets of each Division attributable to these contracts and is paid to
Northwestern Mutual Life. For these contracts, the rates may be increased or
decreased by the Board of Trustees of Northwestern Mutual Life not to exceed
 3/4 of 1% and 1 1/2%, respectively.
 
Generally, for contracts issued on or after December 17, 1981, and before March
31, 1995, the deduction is at an annual rate of 1 1/4% of the net assets of each
Division attributable to these contracts. For these contracts, the rate may be
increased or decreased by the Board of Trustees of Northwestern Mutual Life not
to exceed a 1 1/2% annual rate.
 
Generally, for contracts issued prior to December 17, 1981, the deduction is at
an annual rate of 3/4 of 1% of the net assets of each Division attributable to
these contracts. For these contracts, the rate may be increased or decreased by
the Board of Trustees of Northwestern Mutual Life not to exceed a 1% annual
rate.
 
Note 6 -- Northwestern Mutual Life is taxed as a "life insurance company" under
the Internal Revenue Code and the operations of the Account form a part of and
are taxed with those of Northwestern Mutual Life. Currently, no charges for
taxes have been made by Northwestern Mutual Life to the Account. Accordingly, no
provision for any such liability has been made.
 
                                       15
<PAGE>   19
 
                         NML VARIABLE ANNUITY ACCOUNT B
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                 JUNE 30, 1995
                                 (IN THOUSANDS)
 
Note 7 -- Equity Values by Division are shown below:
 
<TABLE>
<CAPTION>
                                                                                               CONTRACTS ISSUED:
                                                   CONTRACTS ISSUED:                   ON OR AFTER DECEMBER 17, 1981 AND
                                                BEFORE DECEMBER 17, 1981                     BEFORE MARCH 31, 1995
                                         --------------------------------------    -----------------------------------------
                                         ACCUMULATION       UNITS                  ACCUMULATION       UNITS
                DIVISION                  UNIT VALUE     OUTSTANDING    EQUITY      UNIT VALUE     OUTSTANDING      EQUITY
---------------------------------------- ------------    -----------    -------    ------------    -----------    ----------
<S>                                      <C>             <C>            <C>        <C>             <C>            <C>
Index 500 Stock.........................  $ 1.828241        13,695      $25,038     $ 1.786947       127,397      $  227,652
Growth Stock............................     N/A            N/A           N/A         1.144767        20,284          23,220
Growth & Income Stock...................     N/A            N/A           N/A         1.157353        46,096          53,350
Aggressive Growth Stock.................    2.353161         1,655        3,894       2.999410       140,541         323,238
International Equity....................    1.327032         2,481        3,292       1.312743       182,136         239,099
Select Bond.............................    6.204162         1,443        8,950       5.798055        20,881         121,068
High Yield Bond.........................     N/A            N/A           N/A         1.132473        10,927          12,375
Money Market............................    2.261796         1,277        2,888       2.114122        33,425          70,666
Balanced................................    4.206261         7,795       32,789       3.932070       352,995       1,388,003
                                                                        -------                                   ----------
  Equity................................                                 76,851                                       33,660
  Annuity Reserves......................                                  3,210                                    2,458,671
                                                                        -------                                   ----------
  Total Equity..........................                                $80,061                                   $2,492,331
                                                                        =======                                    =========
</TABLE>
 
<TABLE>
<CAPTION>
                                                   CONTRACTS ISSUED:                           CONTRACTS ISSUED:
                                               ON OR AFTER MARCH 31, 1995                 ON OR AFTER MARCH 31, 1995
                                                   FRONT LOAD VERSION                          BACK LOAD VERSION
                                         --------------------------------------    -----------------------------------------
                                         ACCUMULATION       UNITS                  ACCUMULATION       UNITS
                DIVISION                  UNIT VALUE     OUTSTANDING    EQUITY      UNIT VALUE     OUTSTANDING      EQUITY
---------------------------------------- ------------    -----------    -------    ------------    -----------    ----------
<S>                                      <C>             <C>            <C>        <C>             <C>            <C>
Index 500 Stock.........................  $ 1.093889           881      $   963     $ 1.751242         1,817      $    3,247
Growth Stock............................    1.059921           455          482       1.144767           848             970
Growth and Income Stock.................    1.071240         1,038        1,112       1.157353         1,778           2,058
Aggressive Growth Stock.................    1.085737         1,163        1,262       2.291539         1,948           4,480
International Equity....................    1.080273           649          701       1.312743         1,722           2,261
Select Bond.............................    1.061944           374          397       5.742099           262           1,518
High Yield Bond.........................    1.063815           348          370       1.132473           612             693
Money Market............................    1.013464         1,173        1,188       2.109535         1,213           2,564
Balanced................................    1.072654         1,996        2,141       3.912731         1,774           6,976
                                                                        -------                                   ----------
  Equity................................                                  8,616                                       24,767
  Annuity Reserves......................                                     26                                           76
                                                                        -------                                   ----------
  Total Equity..........................                                $ 8,642                                   $   24,843
                                                                        =======                                    =========
</TABLE>
 
N/A -- Not Available. These divisions are currently not available to
       contractholders on contracts issued before December 17, 1981.
 
                                       16
<PAGE>   20
 
                                ---------------
 
                            THIS PAGE INTENTIONALLY
                                   LEFT BLANK
                                ---------------
 
                                       17
<PAGE>   21
 
                            FINANCIAL STATEMENTS OF
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           INDEX 500 STOCK PORTFOLIO
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1995
 
<TABLE>
<S>                                     <C>
ASSETS
  Common Stocks
     (cost $304,022)..................  $ 378,992
  Other Investments
     (cost $21,015)...................     21,013
                                        ---------
                                          400,005
  Cash................................        182
  Dividends and Interest Receivable...        726
                                        ---------
       Total Assets...................    400,913
                                        ---------
LIABILITIES
  Due on Redemption of Fund Shares....        514
  Due to Investment Advisor...........         65
  Due on Future Variation Margin......         49
  Accrued Expenses....................         18
                                        ---------
       Total Liabilities..............        646
                                        ---------
NET ASSETS............................  $ 400,267
                                        =========
REPRESENTED BY:
  Aggregate Paid in Capital
     (500,000 shares authorized,
     $.01 par value; 265,893
     shares outstanding)..............  $ 320,275
  Undistributed Net Investment
     Income...........................        788
  Undistributed Accumulated Net
     Realized Gain on Investments.....      3,440
  Net Unrealized Appreciation of:
     Investment Securities............     74,968
     Index Futures Contracts..........        796
                                        ---------
  Net Assets for 265,893 Shares
     Outstanding......................  $ 400,267
                                        =========
  Net Asset Value, Offering and
     Redemption Price per Share.......      $1.51
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 30, 1995
 
<TABLE>
<S>                                      <C>
INVESTMENT INCOME
  Income
     Dividends (less foreign dividend
       tax of $34).....................  $  4,506
     Interest..........................       485
     Other Income......................         1
                                         --------
       Total Income....................     4,992
                                         --------
  Expenses
     Management Fees...................       353
     Filing Fees.......................        13
     Audit.............................         9
                                         --------
       Total Expenses..................       375
                                         --------
  Net Investment Income................     4,617
                                         --------
REALIZED AND UNREALIZED
  GAIN ON INVESTMENTS
  Net Realized Gain on Investments:
     Investment Securities.............     1,516
     Index Futures Contracts...........     1,566
                                         --------
       Net Realized Gain on
          Investments for the Period...     3,082
                                         --------
  Net Unrealized Appreciation of:
     Investment Securities.............    56,228
     Index Futures Contracts...........       839
                                         --------
       Net Unrealized Appreciation of
          Investments for the Period...    57,067
                                         --------
  Net Gain on Investments..............    60,149
                                         --------
NET INCREASE IN NET ASSETS
  RESULTING FROM OPERATIONS............  $ 64,766
                                         ========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       18
<PAGE>   22
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           INDEX 500 STOCK PORTFOLIO
                       STATEMENT OF CHANGES IN NET ASSETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                 FOR THE
                                                                                SIX MONTHS      FOR THE
                                                                                  ENDED        YEAR ENDED
                                                                                 JUNE 30,     DECEMBER 31,
                                                                                   1995           1994
                                                                                ----------    ------------
<S>                                                                             <C>           <C>
INCREASE IN NET ASSETS
  Operations
     Net Investment Income...................................................    $  4,617       $  6,330
     Net Realized Gain on Investments........................................       3,082          2,961
     Net Unrealized Appreciation of Investments for the Period...............      57,067            389
                                                                                ----------    ------------
       Net Increase in Net Assets Resulting from Operations..................      64,766          9,680
                                                                                ----------    ------------
  Dividends to Shareholders from:
     Net Investment Income...................................................      (3,894)        (6,269)
     Net Realized Gain on Investments........................................          --         (2,586)
                                                                                ----------    ------------
       Net Decrease in Net Assets Resulting from Dividends to Shareholders...      (3,894)        (8,855)
                                                                                ----------    ------------
  Fund Share Transactions
     Proceeds from Sale of 19,676 and 19,955 Shares..........................      27,551         25,556
     Proceeds from Sale of 220,158 Shares Issued in Acquisition of
      Northwestern Mutual Index 500 Stock Fund, Inc. ........................          --        277,484
     Proceeds from Shares Issued on Reinvestment of Dividends Paid
       (2,593 and 6,966 shares, respectively)................................       3,894          8,830
     Payments for 6,060 and 17,180 Shares Redeemed...........................      (8,173)       (22,051)
                                                                                ----------    ------------
       Net Increase in Net Assets Resulting from Fund Share Transactions
          (16,209 and 229,899 shares, respectively)..........................      23,272        289,819
                                                                                ----------    ------------
  Total Increase in Net Assets...............................................      84,144        290,644
NET ASSETS
  Beginning of Period........................................................     316,123         25,479
                                                                                ----------    ------------
  End of Period (includes undistributed net investment income of
     $788 and $65, respectively).............................................    $400,267       $316,123
                                                                                =========     ===========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       19
<PAGE>   23
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           INDEX 500 STOCK PORTFOLIO
                              FINANCIAL HIGHLIGHTS
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
<TABLE>
<CAPTION>
                                         FOR THE SIX
                                           MONTHS                            FOR THE YEARS
                                         ENDED JUNE                        ENDED DECEMBER 31
                                          30, 1995      --------------------------------------------------------
                                         (UNAUDITED)      1994       1993        1992        1991        1990
                                         -----------    --------   ---------   ---------   ---------   ---------
<S>                                      <C>            <C>        <C>         <C>         <C>         <C>
Net Asset Value, Beginning of Period...   $  1.27       $ 1.29     $  1.33     $  1.31     $  1.04     $  1.12
  Income from Investment Operations:
     Net Investment Income.............      0.0181       0.0260      0.0352      0.0340      0.0347      0.0395
     Net Realized and Unrealized Gain
       (Loss) on Investments...........      0.2356      (0.0052)     0.0947      0.0316      0.2685     (0.0812)
                                         -----------    --------   ---------   ---------   ---------   ---------
       Total from Investment
          Operations...................      0.2537       0.0208      0.1299      0.0656      0.3032     (0.0417)
                                         -----------    --------   ---------   ---------   ---------   ---------
  Less Distributions:
     Dividends from Net Investment
       Income..........................     (0.0148)     (0.0259)    (0.0325)    (0.0325)    (0.0332)    (0.0383)
     Distributions from Realized Gains
       on Investments..................      --          (0.0106)    (0.1374)    (0.0131)     --          --
                                         -----------    --------   ---------   ---------   ---------   ---------
       Total Distributions.............     (0.0148)     (0.0365)    (0.1699)    (0.0456)    (0.0332)    (0.0383)
                                         -----------    --------   ---------   ---------   ---------   ---------
Net Asset Value, End of Period.........   $  1.51       $ 1.27     $  1.29     $  1.33     $  1.31     $  1.04
                                         ==========     =========  =========   =========   =========   =========
Total Return+..........................     19.96% ++     1.21%       9.90%       4.54%      29.78%      -4.23%
                                         ==========     =========  =========   =========   =========   =========
Net Assets, End of Period
  (in thousands).......................  $400,267       $316,123   $25,479     $17,288     $14,115     $9,516
                                         ==========     =========  =========   =========   =========   =========
Ratio of Expenses to Average
  Net Assets...........................      0.20% *      0.24%       0.30%       0.30%       0.30%       0.30%
                                         ==========     =========  =========   =========   =========   =========
Ratio of Net Investment Income to
  Average Net Assets...................      2.23% *      3.10%       2.55%       2.61%       2.88%       3.70%
                                         ==========     =========  =========   =========   =========   =========
Portfolio Turnover Rate................      2.00%        5.59%      62.69%      39.93%      40.16%      80.07%
                                         ==========     =========  =========   =========   =========   =========
</TABLE>
 
 * Computed on an annualized basis.
 + Total Return includes deductions for management and other fund expenses;
   excludes deductions for sales loads and account fees.
++ Reflects total return for the period; not annualized.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
 
                                       20
<PAGE>   24
 
                            FINANCIAL STATEMENTS OF
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             GROWTH STOCK PORTFOLIO
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1995
 
<TABLE>
<S>                                      <C>
ASSETS
  Common Stocks
     (cost $50,198)....................  $ 56,434
  Money Market Investments
     (cost $5,079).....................     5,079
                                         --------
                                           61,513
  Cash.................................        79
  Dividends and Interest Receivable....        82
  Due from Sale of Fund Shares.........        30
  Due from Sale of Securities..........        19
                                         --------
       Total Assets....................    61,723
                                         --------
LIABILITIES
  Due on Purchase of Securities........        76
  Due to Investment Advisor............        29
  Accrued Expenses.....................        17
  Due on Redemption of Fund Shares.....         3
                                         --------
       Total Liabilities...............       125
                                         --------
NET ASSETS.............................  $ 61,598
                                         ========
REPRESENTED BY:
  Aggregate Paid in Capital
     (400,000 shares authorized,
     $.01 par value; 54,282 shares
     outstanding)......................  $ 55,352
  Undistributed Net Investment
     Income............................        78
  Undistributed Accumulated Net
     Realized Loss on Investments......       (68)
  Net Unrealized Appreciation of
     Investments.......................     6,236
                                         --------
  Net Assets for 54,282 Shares
     Outstanding.......................  $ 61,598
                                         ========
  Net Asset Value, Offering and
     Redemption Price per Share........     $1.13
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 30, 1995
 
<TABLE>
<S>                                       <C>
INVESTMENT INCOME
  Income
     Dividends..........................  $   536
     Interest...........................      167
                                          -------
       Total Income.....................      703
                                          -------
  Expenses
     Management Fees....................      152
     Audit..............................        9
     Filing Fees........................        5
                                          -------
       Total Expenses...................      166
                                          -------
  Net Investment Income.................      537
                                          -------
REALIZED AND UNREALIZED GAIN ON
  INVESTMENTS
  Net Realized Gain on Investments......       50
  Net Unrealized Appreciation of
     Investments for the Period.........    6,327
                                          -------
  Net Gain on Investments...............    6,377
                                          -------
NET INCREASE IN NET ASSETS
  RESULTING FROM OPERATIONS.............  $ 6,914
                                           ======
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       21
<PAGE>   25
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             GROWTH STOCK PORTFOLIO
                       STATEMENT OF CHANGES IN NET ASSETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                FOR THE
                                                                                                 PERIOD
                                                                                 FOR THE         MAY 3,
                                                                                SIX MONTHS       1994*
                                                                                  ENDED         THROUGH
                                                                                 JUNE 30,     DECEMBER 31,
                                                                                   1995           1994
                                                                                ----------    ------------
<S>                                                                             <C>           <C>
INCREASE IN NET ASSETS
  Operations
     Net Investment Income...................................................    $    537       $    518
     Net Realized Gain (Loss) on Investments.................................          50            (20)
     Net Unrealized Appreciation (Depreciation) of Investments for the
      Period.................................................................       6,327            (92)
                                                                                ----------    ------------
       Net Increase in Net Assets Resulting from Operations..................       6,914            406
                                                                                ----------    ------------
  Dividends to Shareholders from:
     Net Investment Income...................................................        (466)          (511)
     Net Realized Gain on Investments........................................          --            (98)
                                                                                ----------    ------------
       Net Decrease in Net Assets Resulting from Dividends to Shareholders...        (466)          (609)
                                                                                ----------    ------------
  Fund Share Transactions
     Proceeds from Sale of 12,381 and 41,690 Shares..........................      13,264         41,858
     Proceeds from Shares Issued on Reinvestment of Dividends Paid
       (412 and 547 shares, respectively)....................................         466            547
     Payments for 419 and 329 Shares Redeemed................................        (448)          (334)
                                                                                ----------    ------------
       Net Increase in Net Assets Resulting from Fund Share Transactions
          (12,374 and 41,908 shares, respectively)...........................      13,282         42,071
                                                                                ----------    ------------
  Total Increase in Net Assets...............................................      19,730         41,868
NET ASSETS
  Beginning of Period........................................................      41,868              0
                                                                                ----------    ------------
  End of Period (includes undistributed net investment income of
     $78 and $7, respectively)...............................................    $ 61,598       $ 41,868
                                                                                =========     ===========
</TABLE>
 
* Commencement of Operations.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       22
<PAGE>   26
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             GROWTH STOCK PORTFOLIO
                              FINANCIAL HIGHLIGHTS
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
<TABLE>
<CAPTION>
                                                                                                FOR THE
                                                                                FOR THE          PERIOD
                                                                               SIX MONTHS        MAY 3,
                                                                                 ENDED           1994*
                                                                                JUNE 30,        THROUGH
                                                                                  1995        DECEMBER 31,
                                                                              (UNAUDITED)         1994
                                                                              ------------    ------------
<S>                                                                           <C>             <C>
Net Asset Value, Beginning of Period.......................................     $ 1.00          $ 1.00
  Income from Investment Operations:
     Net Investment Income.................................................       0.0112          0.0133
     Net Realized and Unrealized Gains on Investments......................       0.1328          0.0011
                                                                              ------------    ------------
       Total from Investment Operations....................................       0.1440          0.0144
                                                                              ------------    ------------
  Less Distributions:
     Dividends from Net Investment Income..................................      (0.0087)        (0.0131)
     Distributions from Realized Gains on Investments......................        --            (0.0024)
                                                                              ------------    ------------
       Total Distributions.................................................      (0.0087)        (0.0155)
                                                                              ------------    ------------
Net Asset Value, End of Period.............................................     $ 1.13          $ 1.00
                                                                              ===========     ===========
Total Return+..............................................................      14.49%++         1.55%++
                                                                              ===========     ===========
Net Assets, End of Period (in thousands)...................................   $61,598         $41,868
                                                                              ===========     ===========
Ratio of Expenses to Average Net Assets....................................       0.55%**         0.71%**
                                                                              ===========     ===========
Ratio of Net Investment Income to Average Net Assets.......................       1.79%**         2.30%**
                                                                              ===========     ===========
Portfolio Turnover Rate....................................................      17.10%          16.51%
                                                                              ===========     ===========
</TABLE>
 
 * Commencement of Operations.
 
** Computed on an annualized basis.
 
 + Total Return includes deductions for management and other fund expenses;
   excludes deductions for sales loads and account fees.
 
++ Reflects total return for the period; not annualized.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
 
                                       23
<PAGE>   27
 
                            FINANCIAL STATEMENTS OF
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       GROWTH AND INCOME STOCK PORTFOLIO
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1995
 
<TABLE>
<S>                                     <C>
ASSETS
  Common Stocks
     (cost $90,295).................... $ 98,422
  Money Market Investments (cost
     $1,795)...........................    1,795
                                        --------
                                         100,217
  Due From Sale of Securities..........      419
  Dividends and Interest Receivable....      127
  Due from Sale of Fund Shares.........       92
                                        --------
       Total Assets....................  100,855
                                        --------
LIABILITIES
  Due on Purchase of Securities........      338
  Due to Investment Advisor............       54
  Due on Redemption of Fund Shares.....       28
  Accrued Expenses.....................       15
                                        --------
       Total Liabilities...............      435
                                        --------
NET ASSETS............................. $100,420
                                        =========
REPRESENTED BY:
  Aggregate Paid in Capital (400,000
     shares authorized, $.01 par value;
     87,810 shares outstanding)........ $ 89,722
  Undistributed Net Investment
     Income............................       89
  Undistributed Accumulated Net
     Realized Gain on Investments......    2,482
  Net Unrealized Appreciation of
     Investments.......................    8,127
                                        --------
  Net Assets for 87,810 Shares
     Outstanding....................... $100,420
                                        =========
  Net Asset Value, Offering and
     Redemption Price per Share........  $1.14
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 30, 1995
 
<TABLE>
<S>                                      <C>
INVESTMENT INCOME
  Income
     Dividends (less foreign dividend
       tax of $8)....................... $   919
     Interest...........................      95
                                         -------
       Total Income.....................   1,014
                                         -------
  Expenses
     Management Fees....................     269
     Filing Fees........................      11
     Audit..............................       8
                                         -------
       Total Expenses...................     288
                                         -------
  Net Investment Income.................     726
                                         -------
REALIZED AND UNREALIZED GAIN ON
  INVESTMENTS
  Net Realized Gain on Investments......   2,482
  Net Unrealized Appreciation of
     Investments for the Period.........   9,644
                                         -------
  Net Gain on Investments...............  12,126
                                         -------
NET INCREASE IN NET ASSETS RESULTING
  FROM OPERATIONS....................... $12,852
                                         ========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       24
<PAGE>   28
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       GROWTH AND INCOME STOCK PORTFOLIO
                       STATEMENT OF CHANGES IN NET ASSETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                FOR THE
                                                                                                 PERIOD
                                                                                 FOR THE         MAY 3,
                                                                                SIX MONTHS       1994*
                                                                                  ENDED         THROUGH
                                                                                 JUNE 30,     DECEMBER 31,
                                                                                   1995           1994
                                                                                ----------    ------------
<S>                                                                             <C>           <C>
INCREASE IN NET ASSETS
  Operations
     Net Investment Income...................................................    $    726       $    578
     Net Realized Gain on Investments........................................       2,482            632
     Net Unrealized Appreciation (Depreciation) of Investments for the
      Period.................................................................       9,644         (1,517)
                                                                                ----------    ------------
       Net Increase (Decrease) in Net Assets Resulting from Operations.......      12,852           (307)
                                                                                ----------    ------------
  Dividends to Shareholders from:
     Net Investment Income...................................................        (641)          (574)
     Net Realized Gain on Investments........................................        (102)          (530)
                                                                                ----------    ------------
       Net Decrease in Net Assets Resulting from Dividends to Shareholders...        (743)        (1,104)
                                                                                ----------    ------------
  Fund Share Transactions
     Proceeds from Sale of 21,781 and 65,417 Shares..........................      23,280         65,790
     Proceeds from Shares Issued on Reinvestment of Dividends Paid
       (655 and 1,060 shares, respectively)..................................         743          1,042
     Payments for 383 and 720 Shares Redeemed................................        (412)          (721)
                                                                                ----------    ------------
       Net Increase in Net Assets Resulting from Fund Share Transactions
          (22,053 and 65,757 shares, respectively)...........................      23,611         66,111
                                                                                ----------    ------------
  Total Increase in Net Assets...............................................      35,720         64,700
                                                                                ----------    ------------
NET ASSETS
  Beginning of Period........................................................      64,700              0
                                                                                ----------    ------------
  End of Period (includes undistributed net investment income of
     $89 and $4, respectively)...............................................    $100,420       $ 64,700
                                                                                =========     ===========
</TABLE>
 
* Commencement of Operations.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       25
<PAGE>   29
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       GROWTH AND INCOME STOCK PORTFOLIO
                              FINANCIAL HIGHLIGHTS
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
<TABLE>
<CAPTION>
                                                                                                FOR THE
                                                                                 FOR THE         PERIOD
                                                                               SIX MONTHS        MAY 3,
                                                                                  ENDED          1994*
                                                                                JUNE 30,        THROUGH
                                                                                  1995        DECEMBER 31,
                                                                               (UNAUDITED)        1994
                                                                               -----------    ------------
<S>                                                                            <C>            <C>
Net Asset Value, Beginning of Period........................................    $  0.98         $ 1.00
  Income from Investment Operations:
     Net Investment Income..................................................       0.0095         0.0102
     Net Realized and Unrealized Gain (Loss) on Investments.................       0.1584        (0.0119)
                                                                               -----------    ------------
       Total from Investment Operations.....................................       0.1678        (0.0017)
                                                                               -----------    ------------
  Less Distributions:
     Dividends from Net Investment Income...................................      (0.0074)       (0.0101)
     Distributions from Realized Gains on Investments.......................      (0.0013)       (0.0082)
                                                                               -----------    ------------
       Total Distributions..................................................      (0.0086)       (0.0183)
                                                                               -----------    ------------
Net Asset Value, End of Period..............................................    $  1.14         $ 0.98
                                                                               ==========     ===========
Total Return+...............................................................      17.15% ++       0.34% ++
                                                                               ==========     ===========
Net Assets, End of Period (in thousands)....................................   $100,420       $64,700
                                                                               ==========     ===========
Ratio of Expenses to Average Net Assets.....................................       0.62% **       0.78% **
                                                                               ==========     ===========
Ratio of Net Investment Income to Average Net Assets........................       1.52% **       1.93% **
                                                                               ==========     ===========
Portfolio Turnover Rate.....................................................      45.82%         54.18%
                                                                               ==========     ===========
</TABLE>
 
 * Commencement of Operations.
** Computed on an annualized basis.
 + Total Return includes deductions for management and other fund expenses;
   excludes deductions for sales loads and account fees.
++ Reflects total return for the period; not annualized.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
 
                                       26
<PAGE>   30
 
                            FINANCIAL STATEMENTS OF
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       AGGRESSIVE GROWTH STOCK PORTFOLIO
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1995
 
<TABLE>
<S>                                     <C>
ASSETS
  Common Stocks
     (cost $296,337)..................  $ 404,159
  Money Market Investments
     (cost $34,598)...................     34,598
                                        ---------
                                          438,757
  Cash................................        265
  Due from Sale of Securities.........        962
  Dividends and Interest Receivable...         57
                                        ---------
       Total Assets...................    440,041
                                        ---------
LIABILITIES
  Due on Redemption of Fund Shares....        839
  Due on Purchase of Securities.......        586
  Due to Investment Advisor...........        192
  Accrued Expenses....................         18
                                        ---------
       Total Liabilities..............      1,635
                                        ---------
NET ASSETS............................  $ 438,406
                                        =========
REPRESENTED BY:
  Aggregate Paid in Capital
     (700,000 shares authorized,
     $.01 par value; 190,736 shares
     outstanding).....................  $ 323,676
  Undistributed Net Investment
     Income...........................        540
  Undistributed Accumulated Net
     Realized Gain on Investments.....      6,368
  Net Unrealized Appreciation of
     Investments......................    107,822
                                        ---------
  Net Assets for 190,736 Shares
     Outstanding......................  $ 438,406
                                        =========
  Net Asset Value, Offering and
     Redemption Price per Share.......      $2.30
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 30, 1995
 
<TABLE>
<S>                                      <C>
INVESTMENT INCOME
  Income
     Interest..........................  $  1,182
     Dividends (less foreign dividend
       tax of $2)......................       425
                                         --------
       Total Income....................     1,607
                                         --------
  Expenses
     Management Fees...................     1,044
     Filing Fees.......................        14
     Audit.............................         9
                                         --------
       Total Expenses..................     1,067
                                         --------
  Net Investment Income................       540
                                         --------
REALIZED AND UNREALIZED
  GAIN ON INVESTMENTS
  Net Realized Gain on Investments.....     6,368
  Net Unrealized Appreciation of
     Investments for the Period........    49,962
                                         --------
  Net Gain on Investments..............    56,330
                                         --------
NET INCREASE IN NET ASSETS
  RESULTING FROM OPERATIONS............  $ 56,870
                                         ========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       27
<PAGE>   31
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       AGGRESSIVE GROWTH STOCK PORTFOLIO
                       STATEMENT OF CHANGES IN NET ASSETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                FOR THE
                                                                                                 PERIOD
                                                                                 FOR THE         MAY 3,
                                                                                SIX MONTHS       1994*
                                                                                  ENDED         THROUGH
                                                                                 JUNE 30,     DECEMBER 31,
                                                                                   1995           1994
                                                                                ----------    ------------
<S>                                                                             <C>           <C>
INCREASE IN NET ASSETS
  Operations
     Net Investment Income...................................................    $    540       $    566
     Net Realized Gain on Investments........................................       6,368          1,836
     Net Unrealized Appreciation of Investments for the Period...............      49,962         12,516
                                                                                ----------    ------------
       Net Increase in Net Assets Resulting from Operations..................      56,870         14,918
                                                                                ----------    ------------
  Dividends to Shareholders from:
     Net Investment Income...................................................        (503)           (63)
     Net Realized Gain on Investments........................................      (1,836)            --
                                                                                ----------    ------------
       Net Decrease in Net Assets Resulting from Dividends to Shareholders...      (2,339)           (63)
                                                                                ----------    ------------
  Fund Share Transactions
     Proceeds from Sale of 28,564 and 36,999 Shares..........................      59,342         70,697
     Proceeds from Sale of 128,778 Shares Issued in Acquisition of
      Northwestern Mutual Aggressive Growth Stock Fund, Inc. ................          --        245,687
     Proceeds from Shares Issued on Reinvestment of Dividends Paid
       (1,096 and 35 shares, respectively)...................................       2,339             63
     Payments for 2,552 and 2,184 Shares Redeemed............................      (4,902)        (4,206)
                                                                                ----------    ------------
       Net Increase in Net Assets Resulting from Fund Share Transactions
          (27,108 and 163,628 shares, respectively)..........................      56,779        312,241
                                                                                ----------    ------------
  Total Increase in Net Assets...............................................     111,310        327,096
NET ASSETS
  Beginning of Period........................................................     327,096              0
                                                                                ----------    ------------
  End of Period (includes undistributed net investment income of $540 and
     $503, respectively).....................................................    $438,406       $327,096
                                                                                =========     ===========
</TABLE>
 
* Commencement of Operations.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       28
<PAGE>   32
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       AGGRESSIVE GROWTH STOCK PORTFOLIO
                              FINANCIAL HIGHLIGHTS
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
<TABLE>
<CAPTION>
                                                                                                 FOR THE
                                                                                  FOR THE         PERIOD
                                                                                SIX MONTHS        MAY 3,
                                                                                   ENDED          1994*
                                                                                 JUNE 30,        THROUGH
                                                                                   1995        DECEMBER 31,
                                                                                (UNAUDITED)        1994
                                                                                -----------    ------------
<S>                                                                             <C>            <C>
Net Asset Value, Beginning of Period.........................................    $  2.00         $ 1.91
  Income from Investment Operations:
     Net Investment Income...................................................       0.0028         0.0036
     Net Realized and Unrealized Gains on Investments........................       0.3148         0.0859
                                                                                -----------    ------------
       Total from Investment Operations......................................       0.3176         0.0895
                                                                                -----------    ------------
  Less Distributions:
     Dividends from Net Investment Income....................................      (0.0027)       (0.0005)
     Distributions from Realized Gains on Investments........................      (0.0100)         --
                                                                                -----------    ------------
       Total Distributions...................................................      (0.0127)       (0.0005)
                                                                                -----------    ------------
Net Asset Value, End of Period...............................................    $  2.30         $ 2.00
                                                                                =========      ===========
Total Return+................................................................      15.64%++        4.47%++
                                                                                =========      ===========
Net Assets, End of Period (in thousands).....................................   $438,406       $327,096
                                                                                =========      ===========
Ratio of Expenses to Average Net Assets......................................       0.49%**        0.58%**
                                                                                =========      ===========
Ratio of Net Investment Income to Average Net Assets.........................       0.25%**        0.29%**
                                                                                =========      ===========
Portfolio Turnover Rate......................................................      22.13%         21.54%
                                                                                =========      ===========
</TABLE>
 
 * Commencement of Operations.
** Computed on an annualized basis.
 + Total Return includes deductions for management and other fund expenses;
   excludes deductions for sales loads and account fees.
++ Reflects total return for the period; not annualized.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
 
                                       29
<PAGE>   33
 
                            FINANCIAL STATEMENTS OF
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                         INTERNATIONAL EQUITY PORTFOLIO
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1995
 
<TABLE>
<S>                                     <C>
ASSETS
  Common Stocks
     (cost $256,492)................... $276,789
  Money Market Investments
     (cost $34,611)....................   34,615
  Bonds
     (cost $3,971).....................    3,960
                                        --------
                                         315,364
  Cash.................................      337
  Due from Sale of Securities..........   34,053
  Dividends and Interest Receivable....    1,980
  Receivable on Foreign Currency
     Contracts.........................       50
  Due from Sale of Fund Shares.........      167
                                        --------
       Total Assets....................  351,951
                                        --------
LIABILITIES
  Due on Purchase of Securities........   32,383
  Due on Foreign Currency Contracts....    1,153
  Due on Redemption of Fund Shares.....      572
  Due to Investment Advisor............      177
  Accrued Expenses.....................      159
                                        --------
       Total Liabilities...............   34,444
                                        --------
NET ASSETS............................. $317,507
                                        =========
REPRESENTED BY:
  Aggregate Paid in Capital (700,000
     shares authorized, $.01 par value;
     247,765 shares outstanding)....... $289,162
  Undistributed Net Investment
     Income............................    4,929
  Undistributed Accumulated Net
     Realized Gain on Investments......    3,114
  Net Unrealized Appreciation of:
     Investment Securities.............   20,290
     Foreign Currency Transactions.....       12
                                        --------
  Net Assets for 247,765 Shares
     Outstanding....................... $317,507
                                        =========
  Net Asset Value, Offering and
     Redemption Price per Share........  $1.28
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 30, 1995
 
<TABLE>
<S>                                      <C>
INVESTMENT INCOME
  Income
     Dividends (less foreign dividend
       tax of $749)..................... $ 5,280
     Interest...........................     963
                                         -------
       Total Income.....................   6,243
                                         -------
  Expenses
     Management Fees....................   1,018
     Custodian Fees.....................     159
     Other Expenses.....................      96
                                         -------
       Total Expenses...................   1,273
                                         -------
  Net Investment Income.................   4,970
                                         -------
REALIZED AND UNREALIZED GAIN
  (LOSS) ON INVESTMENTS AND
  FOREIGN CURRENCIES
  Net Realized Gain (Loss) on:
     Investment Securities..............   3,488
     Foreign Currency Transactions......    (120)
                                         -------
       Net Realized Gain
          For the Period................   3,368
  Net Unrealized Appreciation of:
     Investment Securities..............  16,115
     Foreign Currency Transactions......      16
                                         -------
       Net Unrealized Appreciation for
          the Period....................  16,131
                                         -------
  Net Gain on Investments...............  19,499
                                         -------
NET INCREASE IN NET ASSETS RESULTING
  FROM OPERATIONS....................... $24,469
                                         ========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       30
<PAGE>   34
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                         INTERNATIONAL EQUITY PORTFOLIO
                       STATEMENT OF CHANGES IN NET ASSETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                 FOR THE
                                                                                                  PERIOD
                                                                                  FOR THE         MAY 3,
                                                                                SIX MONTHS        1994*
                                                                                   ENDED         THROUGH
                                                                                 JUNE 30,      DECEMBER 31,
                                                                                   1995            1994
                                                                                -----------    ------------
<S>                                                                             <C>            <C>
INCREASE IN NET ASSETS
  Operations
     Net Investment Income...................................................    $   4,970       $  4,233
     Net Realized Gain on Investments........................................        3,368          4,575
     Net Unrealized Appreciation (Depreciation) of Investments for the
      Period.................................................................       16,131         (8,846)
                                                                                -----------    ------------
       Net Increase (Decrease) in Net Assets Resulting from Operations.......       24,469            (38)
                                                                                -----------    ------------
  Dividends to Shareholders from:
     Net Investment Income...................................................           --         (4,907)
     Net Realized Gain on Investments........................................       (2,171)        (2,658)
                                                                                -----------    ------------
       Net Decrease in Net Assets Resulting from Dividends to Shareholders...       (2,171)        (7,565)
                                                                                -----------    ------------
  Fund Share Transactions
     Proceeds from Sale of 15,130 and 73,071 Shares..........................       17,829         90,632
     Proceeds from Sale of 193,618 Shares Issued in Acquisition of
      Northwestern Mutual International Equity Fund, Inc. ...................           --        236,438
     Proceeds from Shares Issued on Reinvestment of Dividends Paid
       (1,741 and 6,300 shares, respectively)................................        2,171          7,461
     Payments for 14,715 and 27,830 Shares Redeemed..........................      (17,324)       (34,395)
                                                                                -----------    ------------
       Net Decrease in Net Assets Resulting from Fund Share Transactions
          (2,156 and 245,609 shares, respectively)...........................        2,676        300,136
                                                                                -----------    ------------
  Total Increase in Net Assets...............................................       24,974        292,533
NET ASSETS
  Beginning of Period........................................................      292,533              0
                                                                                -----------    ------------
  End of Period (includes (over)/undistributed net investment income of
     $4,929 and ($41), respectively).........................................    $ 317,507       $292,533
                                                                                 =========     ===========
</TABLE>
 
* Commencement of Operations.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       31
<PAGE>   35
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                         INTERNATIONAL EQUITY PORTFOLIO
                              FINANCIAL HIGHLIGHTS
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
<TABLE>
<CAPTION>
                                                                                                FOR THE
                                                                                FOR THE          PERIOD
                                                                               SIX MONTHS        MAY 3,
                                                                                 ENDED           1994*
                                                                                JUNE 30,        THROUGH
                                                                                  1995        DECEMBER 31,
                                                                              (UNAUDITED)         1994
                                                                              ------------    ------------
<S>                                                                           <C>             <C>
Net Asset Value, Beginning of Period.......................................     $ 1.19          $ 1.22
  Income from Investment Operations:
     Net Investment Income.................................................       0.0201          0.0182
     Net Realized and Unrealized Gain (Loss) on Investments................       0.0790         (0.0113)
                                                                              ------------    ------------
       Total from Investment Operations....................................       0.0991          0.0069
                                                                              ------------    ------------
  Less Distributions:
     Dividends from Net Investment Income..................................        --            (0.0209)
     Distributions from Realized Gains on Investments......................      (0.0088)        (0.0111)
                                                                              ------------    ------------
       Total Distributions.................................................      (0.0088)        (0.0320)
                                                                              ------------    ------------
Net Asset Value, End of Period.............................................     $ 1.28          $ 1.19
                                                                              ===========     ===========
Total Return+..............................................................       8.32%++         0.11%++
                                                                              ===========     ===========
Net Assets, End of Period (in thousands)...................................   $317,507        $292,533
                                                                              ===========     ===========
Ratio of Expenses to Average Net Assets....................................       0.72% **        0.87% **
                                                                              ===========     ===========
Ratio of Net Investment Income to Average Net Assets.......................       2.83% **        2.28% **
                                                                              ===========     ===========
Portfolio Turnover Rate....................................................      17.75%          10.97%
                                                                              ===========     ===========
</TABLE>
 
 * Commencement of Operations.
** Computed on an annualized basis.
 + Total Return includes deductions for management and other fund expenses:
   excludes deductions for sales loads and account fees.
++ Reflects total return for the period; not annualized.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
 
                                       32
<PAGE>   36
 
                            FINANCIAL STATEMENTS OF
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             SELECT BOND PORTFOLIO
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1995
 
<TABLE>
<S>                                      <C>
ASSETS
  Bonds
     (cost $143,953)..................   $148,869
  Money Market Investments
     (cost $26,828)...................     26,854
                                         --------
                                          175,723
  Cash................................        240
  Interest Receivable.................      2,472
                                         --------
       Total Assets...................    178,435
                                         --------
LIABILITIES
  Due on Redemption of Fund Shares....        264
  Due to Investment Advisor...........         44
                                         --------
       Total Liabilities..............        308
                                         --------
NET ASSETS............................   $178,127
                                         =========
REPRESENTED BY:
  Aggregate Paid in Capital
     (400,000 shares authorized, $.01
     par value; 154,539 shares
     outstanding).....................   $175,603
  Undistributed Net Investment
     Income...........................        957
  Undistributed Accumulated Net
     Realized Loss on Investments.....     (3,375)
  Net Unrealized Appreciation of
     Investments......................      4,942
                                         --------
  Net Assets for 154,539 Shares
     Outstanding......................   $178,127
                                         =========
  Net Asset Value, Offering and
     Redemption Price per Share.......    $1.15
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 30, 1995
 
<TABLE>
<S>                                       <C>
INVESTMENT INCOME
  Income
     Interest..........................   $ 5,849
                                          -------
  Expenses
     Management Fees...................       249
                                          -------
  Net Investment Income................     5,600
                                          -------
REALIZED AND UNREALIZED
  GAIN (LOSS) ON INVESTMENTS
  Net Realized Loss on Investments.....      (371)
  Net Unrealized Appreciation of
     Investments for the Period........    13,354
                                          -------
  Net Gain on Investments..............    12,983
                                          -------
NET INCREASE IN NET ASSETS RESULTING
  FROM OPERATIONS......................   $18,583
                                          ========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       33
<PAGE>   37
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             SELECT BOND PORTFOLIO
                       STATEMENT OF CHANGES IN NET ASSETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                 FOR THE
                                                                                SIX MONTHS      FOR THE
                                                                                  ENDED        YEAR ENDED
                                                                                 JUNE 30,     DECEMBER 31,
                                                                                   1995           1994
                                                                                ----------    ------------
<S>                                                                             <C>           <C>
INCREASE IN NET ASSETS
  Operations
     Net Investment Income...................................................    $  5,600       $  7,962
     Net Realized Loss on Investments........................................        (371)        (3,004)
     Net Unrealized Appreciation (Depreciation) of Investments for the
      Period.................................................................      13,354         (4,221)
                                                                                ----------    ------------
       Net Increase in Net Assets Resulting from Operations..................      18,583            737
                                                                                ----------    ------------
  Dividends to Shareholders from:
     Net Investment Income...................................................      (4,709)        (7,907)
     Net Realized Gain on Investments........................................          --            (75)
                                                                                ----------    ------------
       Net Decrease in Net Assets Resulting from Dividends to Shareholders...      (4,709)        (7,982)
                                                                                ----------    ------------
  Fund Share Transactions
     Proceeds from Sale of 8,202 and 7,274 Shares............................       9,098          8,071
     Proceeds from Sale of 148,197 Shares Issued in Acquisition of
      Northwestern Mutual Select Bond Fund, Inc. ............................          --        163,901
     Proceeds from Shares Issued on Reinvestment of Dividends Paid
       (4,071 and 7,517 shares, respectively)................................       4,709          7,982
     Payments for 7,360 and 28,622 Shares Redeemed...........................      (8,062)       (31,686)
                                                                                ----------    ------------
       Net Increase in Net Assets Resulting from Fund Share Transactions
          (4,913 and 134,366 shares, respectively)...........................       5,745        148,268
                                                                                ----------    ------------
  Total Increase in Net Assets...............................................      19,619        141,023
NET ASSETS
  Beginning of Period........................................................     158,508         17,485
                                                                                ----------    ------------
  End of Period (includes undistributed net investment income of
     $957 and $66, respectively).............................................    $178,127       $158,508
                                                                                =========     ===========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       34
<PAGE>   38
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             SELECT BOND PORTFOLIO
                              FINANCIAL HIGHLIGHTS
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
<TABLE>
<CAPTION>
                                                  FOR THE
                                                 SIX MONTHS
                                                   ENDED                            FOR THE YEARS
                                                  JUNE 30,                        ENDED DECEMBER 31
                                                    1995       --------------------------------------------------------
                                                 (UNAUDITED)     1994        1993        1992        1991        1990
                                                 ----------    --------    --------    --------    --------    --------
<S>                                              <C>           <C>         <C>         <C>         <C>         <C>
Net Asset Value, Beginning of Period...........   $ 1.06       $ 1.15      $ 1.14      $ 1.18      $ 1.09      $ 1.11
  Income from Investment Operations:
     Net Investment Income.....................     0.0373       0.0559      0.0766      0.0882      0.0923      0.0928
     Net Realized and Unrealized Gain (Loss) on
       Investments.............................     0.0865      (0.0847)     0.0540     (0.0045)     0.0900     (0.0107)
                                                 ----------    --------    --------    --------    --------    --------
       Total from Investment Operations........     0.1238      (0.0288)     0.1306      0.0837      0.1823      0.0821
                                                 ----------    --------    --------    --------    --------    --------
  Less Distributions:
     Dividends from Net Investment Income......    (0.0313)     (0.0562)    (0.0775)    (0.0881)    (0.0918)    (0.0932)
     Distributions from Realized Gains on
       Investments.............................      --         (0.0049)    (0.0431)    (0.0356)    (0.0005)    (0.0089)
                                                 ----------    --------    --------    --------    --------    --------
       Total Distributions.....................    (0.0313)     (0.0611)    (0.1206)    (0.1237)    (0.0923)    (0.1021)
                                                 ----------    --------    --------    --------    --------    --------
Net Asset Value, End of Period.................   $ 1.15       $ 1.06      $ 1.15      $ 1.14      $ 1.18      $ 1.09
                                                 =========     =========   =========   =========   =========   =========
Total Return+..................................    11.82%++     -2.28%      10.81%       7.74%      17.32%       8.10%
                                                 =========     =========   =========   =========   =========   =========
Net Assets, End of Period (in thousands).......  $178,127      $158,508    $17,485     $15,851     $14,703     $12,124
                                                 =========     =========   =========   =========   =========   =========
Ratio of Expenses to Average Net Assets........     0.30%*       0.30%       0.30%       0.30%       0.30%       0.30%
                                                 =========     =========   =========   =========   =========   =========
Ratio of Net Investment Income to Average Net
  Assets.......................................     5.72%*       7.02%       6.40%       7.52%       8.11%       8.50%
                                                 =========     =========   =========   =========   =========   =========
Portfolio Turnover Rate........................    38.92%      108.00%      67.69%      63.29%      60.88%      33.14%
                                                 =========     =========   =========   =========   =========   =========
</TABLE>
 
 * Computed on an annualized basis.
 + Total Return includes deductions for management and other fund expenses;
   excludes deductions for sales loads and account fees.
++ Reflects total return for the period; not annualized.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
 
                                       35
<PAGE>   39
 
                            FINANCIAL STATEMENTS OF
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           HIGH YIELD BOND PORTFOLIO
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1995
 
<TABLE>
<S>                                       <C>
ASSETS
  Bonds
     (cost $42,688)....................   $43,285
  Preferred Stock
     (cost $500).......................       680
  Money Market Investments
     (cost $997).......................       997
                                          -------
                                           44,962
  Cash.................................       673
  Dividends and Interest Receivable....       892
  Due from Sale of Securities..........       525
  Due from Sale of Fund Shares.........       123
                                          -------
       Total Assets....................    47,175
                                          -------
LIABILITIES
  Due on Purchase of Securities........       992
  Due to Investment Advisor............        22
  Accrued Expenses.....................        14
  Due On Redemption of Fund Shares.....         7
                                          -------
       Total Liabilities...............     1,035
                                          -------
NET ASSETS.............................   $46,140
                                          ========
REPRESENTED BY:
  Aggregate Paid in Capital
     (400,000 shares authorized,
     $.01 par value; 44,240 shares
     outstanding)......................   $44,540
  Undistributed Net Investment
     Income............................       425
  Undistributed Accumulated Net
     Realized Gain on Investments......       398
  Net Unrealized Appreciation of
     Investments.......................       777
                                          -------
  Net Assets for 44,240 Shares
     Outstanding.......................   $46,140
                                          ========
  Net Asset Value, Offering and
     Redemption Price per Share........    $1.04
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 30, 1995
 
<TABLE>
<S>                                        <C>
INVESTMENT INCOME
  Income
     Interest...........................   $2,178
     Other Income.......................       50
                                           ------
       Total Income.....................    2,228
                                           ------
  Expenses
     Management Fees....................      121
     Other Expenses.....................       11
                                           ------
       Total Expenses...................      132
                                           ------
  Net Investment Income.................    2,096
                                           ------
REALIZED AND UNREALIZED
  GAIN ON INVESTMENTS
  Net Realized Gain on Investments......      580
  Net Unrealized Appreciation of
     Investments for the Period.........    1,749
                                           ------
  Net Gain on Investments...............    2,329
                                           ------
NET INCREASE IN NET ASSETS
  RESULTING FROM OPERATIONS.............   $4,425
                                           ======
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       36
<PAGE>   40
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           HIGH YIELD BOND PORTFOLIO
                       STATEMENT OF CHANGES IN NET ASSETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                                     FOR THE
                                                                                                      PERIOD
                                                                                      FOR THE         MAY 3,
                                                                                     SIX MONTHS       1994*
                                                                                       ENDED         THROUGH
                                                                                      JUNE 30,     DECEMBER 31,
                                                                                        1995           1994
                                                                                     ----------    ------------
<S>                                                                                  <C>           <C>
INCREASE IN NET ASSETS
  Operations
     Net Investment Income........................................................    $  2,096       $  1,937
     Net Realized Gain (Loss) on Investments......................................         580            (86)
     Net Unrealized Appreciation (Depreciation) of Investments for the Period.....       1,749           (972)
                                                                                     ----------    ------------
       Net Increase in Net Assets Resulting from Operations.......................       4,425            879
                                                                                     ----------    ------------
  Dividends to Shareholders from:
     Net Investment Income........................................................      (1,689)        (1,919)
     Net Realized Gain on Investments.............................................          --            (96)
                                                                                     ----------    ------------
       Net Decrease in Net Assets Resulting from Dividends to Shareholders........      (1,689)        (2,015)
                                                                                     ----------    ------------
  Fund Share Transactions
     Proceeds from Sale of 6,622 and 35,400 Shares................................       6,788         35,565
     Proceeds from Shares Issued on Reinvestment of Dividends Paid
       (1,625 and 2,004 shares, respectively).....................................       1,689          1,941
     Payments for 597 and 814 Shares Redeemed.....................................        (610)          (833)
                                                                                     ----------    ------------
       Net Increase in Net Assets Resulting from Fund Share Transactions
          (7,650 and 36,590 shares, respectively).................................       7,867         36,673
                                                                                     ----------    ------------
  Total Increase in Net Assets....................................................      10,603         35,537
NET ASSETS
  Beginning of Period.............................................................      35,537              0
                                                                                     ----------    ------------
  End of Period (includes undistributed net investment income of $425
     and $18, respectively).......................................................    $ 46,140       $ 35,537
                                                                                     =========     ===========
</TABLE>
 
* Commencement of Operations.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       37
<PAGE>   41
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           HIGH YIELD BOND PORTFOLIO
                              FINANCIAL HIGHLIGHTS
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
<TABLE>
<CAPTION>
                                                                                                FOR THE
                                                                               FOR THE           PERIOD
                                                                             SIX MONTHS          MAY 3,
                                                                                ENDED            1994*
                                                                              JUNE 30,          THROUGH
                                                                                1995          DECEMBER 31,
                                                                             (UNAUDITED)          1994
                                                                             -----------      ------------
<S>                                                                          <C>              <C>
Net Asset Value, Beginning of Period......................................    $  0.97           $ 1.00
  Income from Investment Operations:
     Net Investment Income................................................       0.0527           0.0567
     Net Realized and Unrealized Gain (Loss) on Investments...............       0.0585          (0.0310)
                                                                             -----------      ------------
       Total from Investment Operations...................................       0.1112           0.0257
                                                                             -----------      ------------
  Less Distributions:
     Dividends from Net Investment Income.................................      (0.0398)         (0.0562)
     Distributions from Realized Gains on Investments.....................      --               (0.0028)
                                                                             -----------      ------------
       Total Distributions................................................      (0.0398)         (0.0590)
                                                                             -----------      ------------
Net Asset Value, End of Period............................................    $  1.04           $ 0.97
                                                                             ==========       ===========
Total Return+.............................................................      11.53%++          3.02%++
                                                                             -----------      ------------
Net Assets, End of Period (in thousands)..................................   $46,140          $35,537
                                                                             ==========       ===========
Ratio of Expenses to Average Net Assets...................................       0.56%**          0.73%**
                                                                             ==========       ===========
Ratio of Net Investment Income to Average Net Assets......................       8.83%**          9.40%**
                                                                             ==========       ===========
Portfolio Turnover Rate...................................................      65.96%          130.78%
                                                                             ==========       ===========
</TABLE>
 
 * Commencement of Operations.
** Computed on an annualized basis.
 + Total Return includes deductions for management and other fund expenses;
   excludes deductions for sales loads and account fees.
++ Reflects total return for the period; not annualized.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
 
                                       38
<PAGE>   42
 
                            FINANCIAL STATEMENTS OF
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             MONEY MARKET PORTFOLIO
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1995
 
<TABLE>
<S>                                     <C>
ASSETS
  Money Market Investments
     (cost $109,859)..................  $ 109,859
  Cash................................        166
  Due from Sale of Fund Shares........        196
  Interest Receivable.................         76
                                        ---------
       Total Assets...................    110,297
                                        ---------
LIABILITIES
  Due on Redemption of Fund Shares....        585
  Due to Investment Advisor...........         27
                                        ---------
       Total Liabilities..............        612
                                        ---------
NET ASSETS............................  $ 109,685
                                        =========
REPRESENTED BY:
  Aggregate Paid in Capital
     (300,000 shares authorized,
     $.01 par value; 109,701 shares
     outstanding).....................  $ 109,685
                                        ---------
  Net Assets for 109,701 Shares
     Outstanding......................  $ 109,685
                                        =========
  Net Asset Value, Offering and
     Redemption Price per Share.......      $1.00
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 30, 1995
 
<TABLE>
<S>                                        <C>
INVESTMENT INCOME
  Income
     Interest...........................   $3,158
                                           ------
  Expenses
     Management Fees....................      156
                                           ------
  Net Investment Income.................    3,002
                                           ------
NET INCREASE IN NET ASSETS
  RESULTING FROM OPERATIONS.............   $3,002
                                           ======
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       39
<PAGE>   43
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             MONEY MARKET PORTFOLIO
                       STATEMENT OF CHANGES IN NET ASSETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                FOR THE SIX
                                                                                  MONTHS         FOR THE
                                                                                ENDED JUNE      YEAR ENDED
                                                                                    30,        DECEMBER 31,
                                                                                   1995            1994
                                                                                -----------    ------------
<S>                                                                             <C>            <C>
INCREASE IN NET ASSETS
  Operations
     Net Investment Income...................................................    $   3,002       $  3,291
                                                                                -----------    ------------
       Net Increase in Net Assets Resulting from Operations..................        3,002          3,291
                                                                                -----------    ------------
  Dividends to Shareholders from:
     Net Investment Income...................................................       (3,002)        (3,307)
                                                                                -----------    ------------
       Net Decrease in Net Assets Resulting from Dividends to Shareholders...       (3,002)        (3,307)
                                                                                -----------    ------------
  Fund Share Transactions
     Proceeds from Sale of 31,755 and 40,033 Shares..........................       31,755         40,032
     Proceeds from Sale of 91,310 Shares Issued in Acquisition of
      Northwestern Mutual Money Market Fund, Inc. ...........................           --         91,310
     Proceeds from Shares Issued on Reinvestment of Dividend Paid (3,002 and
      2,938 shares, respectively)............................................        3,002          2,938
     Payments for 29,289 and 42,704 Shares Redeemed..........................      (29,289)       (42,704)
                                                                                -----------    ------------
       Net Increase in Net Assets Resulting from Fund Share Transactions
        (5,468 and 91,577 shares, respectively)..............................        5,468         91,576
                                                                                -----------    ------------
  Total Increase in Net Assets...............................................        5,468         91,560
NET ASSETS
  Beginning of Period........................................................      104,217         12,657
                                                                                -----------    ------------
  End of Period (includes no undistributed net investment income)............    $ 109,685       $104,217
                                                                                 =========     ===========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       40
<PAGE>   44
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             MONEY MARKET PORTFOLIO
                              FINANCIAL HIGHLIGHTS
                 (FOR A SHARE OUTSTANDING THROUGHOUT THE YEAR)
 
<TABLE>
<CAPTION>
                                        FOR THE
                                      SIX MONTHS
                                         ENDED                            FOR THE YEARS
                                       JUNE 30,                         ENDED DECEMBER 31
                                         1995        --------------------------------------------------------
                                      (UNAUDITED)      1994        1993        1992        1991        1990
                                      -----------    --------    --------    --------    --------    --------
<S>                                   <C>            <C>         <C>         <C>         <C>         <C>
Net Asset Value,
  Beginning of Period..............    $  1.00       $ 1.00      $ 1.00      $ 1.00      $ 1.00      $ 1.00
  Income from Investment
     Operations:
     Net Investment Income.........       0.0285       0.0464      0.0287      0.0340      0.0571      0.0793
     Net Realized and Unrealized
       Gains on Investments........       --            --          --         0.0002       --          --
                                      -----------    --------    --------    --------    --------    --------
       Total from Investment
          Operations...............       0.0285       0.0464      0.0287      0.0342      0.0571      0.0793
                                      -----------    --------    --------    --------    --------    --------
  Less Distributions:
     Dividends from Net Investment
       Income......................      (0.0274)     (0.0464)    (0.0287)    (0.0340)    (0.0571)    (0.0793)
     Distributions from Realized
       Gains on Investments........       --            --          --        (0.0002)      --          --
                                      -----------    --------    --------    --------    --------    --------
       Total Distributions.........      (0.0274)     (0.0464)    (0.0287)    (0.0342)    (0.0571)    (0.0793)
                                      -----------    --------    --------    --------    --------    --------
Net Asset Value, End of Period.....    $  1.00       $ 1.00      $ 1.00      $ 1.00      $ 1.00      $ 1.00
                                      ==========     =========   =========   =========   =========   =========
Total Return+......................       2.91% ++     4.03%       2.88%       3.49%       5.85%       8.23%
                                      ==========     =========   =========   =========   =========   =========
Net Assets, End of Period
  (in thousands)...................   $109,685       $104,217    $12,657     14,091      $12,787     $13,362
                                      ==========     =========   =========   =========   =========   =========
Ratio of Expenses to Average Net
  Assets...........................       0.30% *      0.30%       0.30%       0.30%       0.30%       0.30%
                                      ==========     =========   =========   =========   =========   =========
Ratio of Net Investment Income to
  Average Net Assets...............       4.89% *      4.64%       2.87%       3.40%       5.71%       7.93%
                                      ==========     =========   =========   =========   =========   =========
</TABLE>
 
 * Computed on an annualized basis.
 + Total Return includes deductions for management and other fund expenses;
   excludes deductions for sales loads and account fees.
++ Reflects total return for the period; not annualized.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
 
                                       41
<PAGE>   45
 
                            FINANCIAL STATEMENTS OF
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 1995
 
<TABLE>
<S>                                   <C>
ASSETS
  Common Stocks
     (cost $744,740)................  $  925,101
  Preferred Stock
     (cost $2)......................           4
  Bonds
     (cost $632,622)................     651,848
  Money Market Investments
     (cost $327,916)................     328,354
                                      ----------
                                       1,905,307
  Cash..............................         360
  Dividends and Interest
     Receivable.....................      12,512
  Due from Sale of Fund Shares......         100
                                      ----------
       Total Assets.................   1,918,279
                                      ----------
LIABILITIES
  Due on Redemption of Fund
     Shares.........................       3,616
  Due to Investment Advisor.........         469
  Due on Futures Variation Margin...         212
                                      ----------
       Total Liabilities............       4,297
                                      ----------
NET ASSETS..........................  $1,913,982
                                      ==========
REPRESENTED BY:
  Aggregate Paid in Capital
     (2,000,000 shares authorized,
     $.01 par value; 1,316,783
     shares outstanding)............  $1,657,883
  Undistributed Net Investment
     Income.........................      41,120
  Undistributed Accumulated Net
     Realized Gain on Investments...      13,559
  Net Unrealized Appreciation of:
     Investment Securities..........     200,027
     Index Futures Contracts........       1,393
                                      ----------
  Net Assets for 1,316,783 Shares
     Outstanding....................  $1,913,982
                                      ==========
  Net Asset Value, Offering and
     Redemption Price per Share.....       $1.45
</TABLE>
 
STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 30, 1995
 
<TABLE>
<S>                                     <C>
INVESTMENT INCOME
  Income
     Dividends (less foreign dividend
       tax of $91)....................  $ 11,361
     Interest.........................    32,437
     Other Income.....................         7
                                        --------
       Total Income...................    43,805
                                        --------
  Expenses
     Management Fees..................     2,690
                                        --------
  Net Investment Income...............    41,115
                                        --------
REALIZED AND UNREALIZED
  GAIN ON INVESTMENTS
  Net Realized Gain on
     Investments:
     Investment Securities............     8,104
     Index Futures Contracts..........     8,353
                                        --------
       Net Realized Gain on
          Investments for the
          Period......................    16,457
                                        --------
  Net Unrealized Appreciation of:
     Investment Securities............   188,279
     Index Futures Contracts..........       321
                                        --------
       Net Unrealized Appreciation of
          Investments for the
          Period......................   188,600
                                        --------
  Net Gain on Investments.............   205,057
                                        --------
NET INCREASE IN NET ASSETS
  RESULTING FROM OPERATIONS...........  $246,172
                                        =========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       42
<PAGE>   46
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                       STATEMENT OF CHANGES IN NET ASSETS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                                FOR THE
                                                                               SIX MONTHS      FOR THE
                                                                                 ENDED        YEAR ENDED
                                                                                JUNE 30,     DECEMBER 31,
                                                                                  1995           1994
                                                                               ----------    ------------
<S>                                                                            <C>           <C>
INCREASE IN NET ASSETS
  Operations
     Net Investment Income..................................................   $   41,115     $   53,165
     Net Realized Gain on Investments.......................................       16,457          5,281
     Net Unrealized Appreciation (Depreciation) of Investments for the
      Period................................................................      188,600        (17,767)
                                                                               ----------    ------------
       Net Increase in Net Assets Resulting from Operations.................      246,172         40,679
                                                                               ----------    ------------
  Dividends to Shareholders from:
     Net Investment Income..................................................      (53,160)           (28)
     Net Realized Gain on Investments.......................................       (8,179)          (782)
                                                                               ----------    ------------
       Net Decrease in Net Assets Resulting from Dividends to
        Shareholders........................................................      (61,339)          (810)
  Fund Share Transactions
     Proceeds from Sale of 16,528 and 21,149 Shares.........................       22,533         27,441
     Proceeds from Sale of 1,330,565 Shares Issued in Acquisition of
      Northwestern Mutual Balanced Fund, Inc. ..............................           --      1,705,466
     Proceeds from Shares Issued on Reinvestment of Dividends Paid
       (44,352 and 607 shares, respectively)................................       61,339            810
     Payments for 59,871 and 88,502 Shares Redeemed.........................      (81,850)      (115,369)
                                                                               ----------    ------------
       Net Increase in Net Assets Resulting from Fund Share Transactions
          (1,009 and 1,263,819 shares, respectively)........................        2,022      1,618,348
                                                                               ----------    ------------
  Total Increase in Net Assets..............................................      186,855      1,658,217
NET ASSETS
  Beginning of Period.......................................................    1,727,127         68,910
                                                                               ----------    ------------
  End of Period (includes undistributed net investment income of
     $41,120 and $53,165 respectively)......................................   $1,913,982     $1,727,127
                                                                               ==========    ===========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       43
<PAGE>   47
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                              FINANCIAL HIGHLIGHTS
                (FOR A SHARE OUTSTANDING THROUGHOUT THE PERIOD)
 
<TABLE>
<CAPTION>
                                      FOR THE
                                    SIX MONTHS
                                       ENDED                             FOR THE YEARS
                                     JUNE 30,                          ENDED DECEMBER 31
                                       1995        ----------------------------------------------------------
                                    (UNAUDITED)       1994         1993        1992        1991        1990
                                    -----------    ----------    --------    --------    --------    --------
<S>                                 <C>            <C>           <C>         <C>         <C>         <C>
Net Asset Value, Beginning of
  Period..........................  $    1.31      $   1.33      $ 1.39      $ 1.40      $ 1.19      $ 1.24
  Income from Investment
     Operations:
     Net Investment Income........       0.0316        0.0404      0.0613      0.0622      0.0672      0.0733
     Net Realized and Unrealized
       Gain (Loss) on
       Investments................       0.1575       (0.0451)     0.0837      0.0086      0.2083     (0.0515)
                                    -----------    ----------    --------    --------    --------    --------
       Total from Investment
          Operations..............       0.1891       (0.0047)     0.1450      0.0708      0.2755      0.0218
                                    -----------    ----------    --------    --------    --------    --------
  Less Distributions:
     Dividends from Net Investment
       Income.....................      (0.0415)      (0.0005)    (0.0651)    (0.0607)    (0.0655)    (0.0718)
     Distributions from Realized
       Gains on Investments.......      (0.0064)      (0.0149)    (0.1399)    (0.0201)      --          --
                                    -----------    ----------    --------    --------    --------    --------
       Total Distributions........      (0.0478)      (0.0154)    (0.2050)    (0.0808)    (0.0655)    (0.0718)
                                    -----------    ----------    --------    --------    --------    --------
Net Asset Value, End of Period....  $    1.45      $   1.31      $ 1.33      $ 1.39      $ 1.40      $ 1.19
                                    ==========     ==========    =========   =========   =========   =========
Total Return+.....................     14.57%++        0.16%       9.91%       5.61%      23.33%       1.53%
                                    ==========     ==========    =========   =========   =========   =========
Net Assets, End of Period
  (in thousands)..................  $1,913,982     $1,727,127    $68,910     $66,006     $57,269     $42,839
                                    ==========     ==========    =========   =========   =========   =========
Ratio of Expenses to Average Net
  Assets..........................       0.30%*        0.30%       0.30%       0.30%       0.30%       0.30%
                                    ==========     ==========    =========   =========   =========   =========
Ratio of Net Investment Income to
  Average Net Assets..............       3.89%*        4.78%       4.24%       4.45%       5.11%       6.07%
                                    ==========     ==========    =========   =========   =========   =========
Portfolio Turnover Rate...........      22.49%        42.35%      70.91%      43.28%      55.46%      72.89%
                                    ==========     ==========    =========   =========   =========   =========
</TABLE>
 
 * Computed on an annualized basis.
 
 + Total Return includes deductions for management and other fund expenses;
   excludes deductions for sales loads and account fees.
 
++ Reflects total return for the period; not annualized.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
 
                                       44
<PAGE>   48
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                         NOTES TO FINANCIAL STATEMENTS
                                 JUNE 30, 1995
 
Note 1 -- Northwestern Mutual Series Fund, Inc. (the "Series Fund"), formerly
Northwestern Mutual Variable Life Series Fund, Inc., is registered as a
diversified open-end investment company under the Investment Company Act of
1940. The Series Fund consists of the Index 500 Stock Portfolio, Growth Stock
Portfolio, Growth and Income Stock Portfolio, Aggressive Growth Stock Portfolio,
International Equity Portfolio, Select Bond Portfolio, High Yield Bond
Portfolio, Money Market Portfolio, and Balanced Portfolio (the "Portfolios").
Shares are presently offered only to The Northwestern Mutual Life Insurance
Company ("Northwestern Mutual Life") and its segregated asset accounts.
 
On May 3, 1994, five new portfolios commenced operations in the Series Fund:
Growth Stock Portfolio, Growth and Income Stock Portfolio, Aggressive Growth
Stock Portfolio, International Equity Portfolio, and High Yield Bond Portfolio.
These five portfolios were organized with 700,000,000 authorized shares of
Common Stock for each of the Aggressive Growth and International Portfolios and
400,000,000 authorized shares of Common Stock for each of the Growth Stock,
Growth and Income Stock and High Yield Bond Portfolios. Par Value is $.01 per
share. Northwestern Mutual Life purchased 25,000,000 shares each of the Growth
Stock Portfolio, Growth and Income Stock Portfolio and High Yield Bond Portfolio
at $1.00 per share.
 
Note 2 -- The assets of Northwestern Mutual Life's variable annuity funds were
merged into the Series Fund in a tax-free exchange of fund shares on May 3,
1994. The following summarizes the merge:
 
<TABLE>
<CAPTION>
                                                                  # OF SHARES/      UNREALIZED APPRECIATION
                         MERGE FROM:                             VALUE REDEEMED    (DEPRECIATION) TRANSFERRED
--------------------------------------------------------------   --------------    --------------------------
<S>                                                              <C>               <C>
Northwestern Mutual Index 500 Stock Fund, Inc. ...............   199,137,846277,484,077          16,828,536
                                                                 $                        $
Northwestern Mutual Aggressive Growth Stock Fund, Inc. .......   128,778,039245,687,070          45,345,398
                                                                 $                        $
Northwestern Mutual International Equity Fund, Inc............   193,618,391236,437,711          13,017,843
                                                                 $                        $
Northwestern Mutual Select Bond Fund, Inc. ...................   127,156,919163,901,422          (4,867,983)
                                                                 $                        $
Northwestern Mutual Money Market Fund, Inc. ..................   91,309,66491,309,664
                                                                 $                                  --
Northwestern Mutual Balanced Fund, Inc........................   1,250,574,7201,705,465,964          27,288,995
                                                                 $                        $
</TABLE>
 
<TABLE>
<CAPTION>
                                                                  # OF SHARES/         AGGREGATE NET ASSETS
                          MERGED TO:                             VALUE RECEIVED      OF PORTFOLIO AFTER MERGER
--------------------------------------------------------------   --------------      -------------------------
<S>                                                              <C>                 <C>
Northwestern Mutual Series Fund, Inc.
  -- Index 500 Stock Portfolio................................   220,157,952277,484,077
                                                                 $                        $   305,458,525
  -- Aggressive Growth Stock Portfolio........................   128,778,039245,687,070
                                                                 $                        $   245,687,070
  -- International Equity Portfolio...........................   193,618,391236,437,711
                                                                 $                        $   236,437,711
  -- Select Bond Portfolio....................................   148,196,445163,901,422
                                                                 $                        $   181,055,470
  -- Money Market Portfolio...................................   91,309,66491,309,664
                                                                 $                        $   104,436,452
  -- Balanced Portfolio.......................................   1,330,564,6791,705,465,964
                                                                 $                        $ 1,776,058,467
</TABLE>
 
The Aggressive Growth Stock and International Equity Portfolios had no assets
prior to the merger so the assets of the Funds became the assets of the
Portfolios. Hence, these Portfolios commenced operations in the Series Fund on
May 3, 1994 at $1.91 and $1.22, respectively.
 
Principal accounting policies are summarized below.
 
Note 3 -- Bonds are valued on the basis of prices furnished by a service which
determines prices for normal institutional size trading units of bonds, without
regard to exchange or over-the-counter prices. When quotations are not readily
available, bonds are valued at fair market value determined by procedures
approved by the Board of
 
                                       45
<PAGE>   49
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                 JUNE 30, 1995
 
Directors. Stocks listed on a national or foreign stock exchange are valued at
the final sale price, or final bid price in absence of a sale. Stocks not listed
on a national or foreign stock exchange are valued at the closing bid price on
the over-the-counter market. Money market investments, other than in the Money
Market Portfolio, with maturities exceeding sixty days but generally not
exceeding one year are valued by marking to market on the basis of an average of
the most recent bid prices or yields. Securities with maturities of sixty days
or less and all securities in the Money Market Portfolio are valued on an
amortized cost basis or, if the current market value differs substantially from
the amortized cost, by marking to market.
 
Note 4 -- Securities and other assets and liabilities denominated in foreign
currencies are translated into U.S. dollar amounts at date of valuation.
Purchases and sales of securities and income items denominated in foreign
currencies are translated in U.S. dollar amounts on the respective dates of such
transactions. When the International Equity Portfolio purchases or sells foreign
securities it may enter into a foreign exchange currency contract to minimize
market risk from the trade date to the settlement date of such transaction. Such
foreign exchange currency contracts are marked to market daily.
 
The International Equity Portfolio does not separately report the results of
operations resulting from changes in foreign exchange rates on investments from
the fluctuations arising from changes in market prices of securities held. Such
fluctuations are included with the net realized and unrealized gain or loss from
investments.
 
Net realized foreign exchange gains or losses arise from sales of foreign
currencies, currency gains or losses realized between the trade date and
settlement date on security transactions, the differences between the amounts of
dividends and foreign withholding taxes recorded on the portfolio's books, and
the U.S. dollar equivalent of the amounts actually received or paid.
 
Note 5 -- The Index and Balanced Portfolios invest in financial futures as an
alternative to investing in individual securities. The Index and Balanced
Portfolios could be exposed to market risk due to changes in the value of the
underlying securities or due to an illiquid secondary market. Financial futures
are marked to market based upon quoted settlement prices; variation margin
payments are received or made to reflect changes in unrealized appreciation or
depreciation. Realized gains or losses are recognized when financial futures
contracts are closed.
 
Note 6 -- Interest income and discounts earned are recorded daily on the accrual
basis and dividend income is recorded on the ex-dividend date or as soon as
information from foreign securities is available. Where applicable, dividends
are recorded net of foreign dividend tax. Discounts and premiums on securities
purchased are amortized over the life of the respective securities when required
for federal income tax purposes. Securities transactions are accounted for on
the day following the trade date except for money market investments which are
accounted for on the trade date. The basis for determining cost on sale of
securities is identified cost. For the period ended June 30, 1995, transactions
in securities other than money market investments were:
 
<TABLE>
<CAPTION>
                                                                  PERIOD ENDED JUNE 30, 1995
                                             --------------------------------------------------------------------
                                                TOTAL         U.S. GOVT           TOTAL             U.S. GOVT
                                               SECURITY        SECURITY          SECURITY            SECURITY
                PORTFOLIOS                    PURCHASES       PURCHASES      SALES/MATURITIES    SALES/MATURITIES
------------------------------------------   ------------    ------------    ----------------    ----------------
<S>                                          <C>             <C>             <C>                 <C>
Index 500.................................   $ 19,516,113    $          0      $  5,260,953        $          0
Growth Stock..............................     21,033,825               0         7,893,103                   0
Growth and Income.........................     60,403,251               0        33,955,576                   0
Aggressive Growth.........................    136,739,468               0        68,848,986                   0
International.............................     37,568,365       2,897,648        32,789,435                   0
Select Bond...............................     58,430,292      35,374,070        62,296,291          43,997,382
High Yield Bond...........................     33,572,883               0        25,525,588                   0
Balanced..................................    425,199,173     291,074,292       319,843,122         213,794,984
</TABLE>
 
Note 7 -- The Series Fund and its Portfolios are parties to annually renewable
contracts pursuant to which each Portfolio pays a charge for investment
management and administrative services. Each Portfolio pays a monthly fee for
these investment advisory services at an annual rate based on the average daily
net asset values of each Portfolio. For the Index 500 Stock Portfolio the rate
is .20%, and for the Select Bond, Money Market and Balanced
 
                                       46
<PAGE>   50
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                 JUNE 30, 1995
 
Portfolios the rate is .30%. For the other Portfolios the rate for the
investment advisory fee is graded by the asset size of the Portfolio according
to the following schedule:
 
<TABLE>
<CAPTION>
                           PORTFOLIO                               FIRST $50 MILLION    NEXT $50 MILLION    EXCESS
----------------------------------------------------------------   -----------------    ----------------    ------
<S>                                                                <C>                  <C>                 <C>
Aggressive Growth...............................................          .80%                .65%           .50%
International Equity............................................          .85%                .65%           .65%
Growth Stock....................................................          .60%                .50%           .40%
Growth and Income...............................................          .70%                .60%           .55%
High Yield Bond.................................................          .60%                .50%           .40%
</TABLE>
 
These amounts are paid to Northwestern Mutual Investment Services, Inc. ("NMIS")
a wholly-owned subsidiary of Northwestern Mutual Life, which is the manager and
investment adviser of the Fund. Northwestern Mutual Life is also a party to the
agreement. All Portfolios pay investment management expenses; certain other
costs are paid by Northwestern Mutual Life or NMIS.
 
J.P. Morgan Investment Management, Inc. ("J.P. Morgan") and Templeton Investment
Counsel, Inc. ("Templeton Counsel") have been retained under an investment
sub-advisory agreement to provide investment advice and, in general, to conduct
the management investment program of the Growth and Income Stock Portfolio and
the International Equity Portfolio, respectively. Of the advisory fees received
by NMIS from the Growth and Income Stock Portfolio, .45% on the first $100
million of the Portfolio's net assets, .40% on the next $100 million, .35% on
the next $200 million and .30% on the net assets in excess of $400 million will
be paid by NMIS to J.P. Morgan. Of the advisory fees received by NMIS from the
International Equity Portfolio, .50% on the first $100 million of the
Portfolio's net assets and .40% on net assets in excess of $100 million will be
paid by NMIS to Templeton Counsel.
 
Note 8 -- The Series Fund has elected to be taxed as a regulated investment
company meeting certain requirements under the Internal Revenue Code. Since it
expects to distribute all net investment income and net realized capital gains,
the Series Fund anticipates incurring no federal income taxes. Net realized
capital losses of $1,704,510 in the Select Bond Portfolio and $2,207,870 in the
Balanced Portfolio may be carried forward and offset against future net realized
capital gains. These amounts expire in 2002. A capital loss carryforward of
$392,328 was utilized in the Index 500 Stock Portfolio during the year ended
December 31, 1994. As of June 30, 1995, the federal income tax basis of
investments is the same as the cost basis in the financial statements except for
the International Equity Portfolio. The net unrealized appreciation
(depreciation), and the gross unrealized appreciation and depreciation, for
federal income tax purposes are shown below:
 
<TABLE>
<CAPTION>
                                                                GROWTH       GROWTH AND       AGGRESSIVE
                                              INDEX 500         STOCK          INCOME           GROWTH
                                              PORTFOLIO       PORTFOLIO       PORTFOLIO       PORTFOLIO
                                             ------------    ------------    -----------    --------------
<S>                                          <C>             <C>             <C>            <C>
Gross unrealized appreciation.............   $ 81,729,072    $ 6,829,393     $ 9,586,501     $113,066,793
Gross unrealized depreciation.............      6,758,706        593,824       1,459,447        5,243,903
                                             ------------    ------------    -----------    --------------
Net unrealized appreciation...............   $ 74,970,366    $ 6,235,569     $ 8,127,054     $107,822,889
                                             =============   =============   ============   ==============
Federal income tax basis of investments...   $325,036,116    $55,277,553     $92,089,532     $330,934,997
                                             =============   =============   ============   ==============
</TABLE>
 
<TABLE>
<CAPTION>
                                             INTERNATIONAL                   HIGH YIELD
                                                EQUITY       SELECT BOND        BOND           BALANCED
                                              PORTFOLIO       PORTFOLIO       PORTFOLIO       PORTFOLIO
                                             ------------    ------------    -----------    --------------
<S>                                          <C>             <C>             <C>            <C>
Gross unrealized appreciation.............   $ 29,150,710    $  5,636,162    $ 1,463,254    $  226,277,396
Gross unrealized depreciation.............     10,328,070         693,936        688,211        26,249,308
                                             ------------    ------------    -----------    --------------
Net unrealized appreciation...............   $ 18,822,640    $  4,942,227    $   775,043    $  200,028,088
                                             =============   =============   ============   ==============
Federal income tax basis of investments...   $296,541,644    $170,780,861    $44,185,445    $1,705,278,961
                                             =============   =============   ============   ==============
</TABLE>
 
The federal income tax basis of investments was $109,858,546 for the Money
Market Portfolio.
 
Taxable distributions from net investment income and realized capital gains in
the International Equity Portfolio differ from book amounts earned during the
period due to differences in the timing of capital recognition and due to the
reclassification of certain gains or losses from capital to income.
 
For Federal income tax purposes, net unrealized appreciation of $795,825 and
$1,393,100 on open futures contracts for the Index 500 and Balanced Portfolios,
respectively, is required to be treated as realized gains.
 
                                       47
<PAGE>   51
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                 JUNE 30, 1995
 
Note 9 -- The costs associated with organizing the five new Portfolios and
certain other initial period costs have been incurred by The Northwestern Mutual
Life Insurance Company. The Series Fund is not obligated to repay these costs.
 
Note 10 -- Dividends from net investment income and net realized capital gains
are declared each year for the Index 500, Growth Stock, Growth and Income,
Aggressive Growth, International, Select Bond, High Yield Bond and Balanced
Portfolios and each business day for the Money Market Portfolio. Dividend
distributions are described below.
 
A dividend was declared on May 2, 1995, payable to shareholders of record on May
2, 1995. Dividends paid from 1994 net investment income and 1994 net capital
gains were as follows:
 
<TABLE>
<CAPTION>
                                                                                  NET
                                                                              INVESTMENT          NET
                                PORTFOLIOS                                      INCOME       CAPITAL GAINS
---------------------------------------------------------------------------   -----------    -------------
<S>                                                                           <C>            <C>
Index 500..................................................................   $    64,846              --
Growth Stock...............................................................         6,489              --
Growth and Income..........................................................         4,761     $   101,563
Aggressive Growth..........................................................       502,448       1,836,281
International..............................................................            --       2,170,803
Select Bond................................................................        63,551              --
High Yield Bond............................................................        18,833              --
Balanced...................................................................    53,159,765       8,178,849
</TABLE>
 
A dividend was declared on June 26, 1995, payable to shareholders of record on
June 26, 1995. Dividends were paid from 1995 net investment income and were as
follows:
 
<TABLE>
<CAPTION>
                                                                                               NET
                                                                                            INVESTMENT
                                       PORTFOLIOS                                             INCOME
-----------------------------------------------------------------------------------------   ----------
<S>                                                                                         <C>
Index 500................................................................................   $3,829,315
Growth Stock.............................................................................      459,372
Growth and Income........................................................................      636,176
Select Bond..............................................................................    4,645,196
High Yield Bond..........................................................................    1,670,096
</TABLE>
 
Note 11 -- A Special Meeting of the stockholders of Northwestern Mutual Series
Fund, Inc. was held at 720 East Wisconsin Avenue, Milwaukee, Wisconsin, on March
29, 1995.
 
The stockholders cast the following votes on the resolutions presented:
 
BE IT RESOLVED, that the following persons are nominated and elected as
Directors of the Corporation to serve for the term provided in the By-Laws:
 
<TABLE>
<CAPTION>
                           FOR               ABSTAIN
<S>                  <C>                  <C>
Stephen N. Graff     2,270,116,766.25     102,692,132.73
John K. MacIver      2,266,153,929.25     106,654,969.73
Martin F. Stein      2,268,092,761.36     104,716,137.62
James D. Ericson     2,270,768,173.35     102,040,725.63
William J. Blake     2,268,894,605.36     103,914,293.62
</TABLE>
 
BE IT RESOLVED, that the selection of Price Waterhouse LLP, independent
accountants, as auditors of the Corporation is hereby ratified.
 
    YES 2,266,641,454.01    NO     28,050,550.26    ABSTAIN     78,116,894.71
 
                                       48
<PAGE>   52
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                                 JUNE 30, 1995
 
BE IT RESOLVED, that the investment advisory agreement between the Corporation,
NMIS and The Northwestern Mutual Life Insurance Company for the Growth and
Income Stock Portfolio is hereby approved and that the investment sub-advisory
agreement between the Corporation, NMIS and J.P. Morgan Investment Management,
Inc. for the Growth and Income Stock Portfolio is hereby approved.
 
    YES    62,729,865.96   NO         703,277.71   ABSTAIN       2,324,267.25
 
BE IT RESOLVED, that the investment advisory agreement between the Corporation,
NMIS and The Northwestern Mutual Life Insurance Company for the Growth Stock
Portfolio is hereby approved.
 
    YES    39,112,648.85   NO       1,136,499.86   ABSTAIN       1,658,855.64
 
BE IT RESOLVED, that the investment advisory agreement between the Corporation,
NMIS and The Northwestern Mutual Life Insurance Company for the Aggressive
Growth Stock Portfolio is hereby approved.
 
    YES   153,485,939.4    NO       2,613,557.91   ABSTAIN       7,528,159.97
 
BE IT RESOLVED, that the investment advisory agreement between the Corporation,
NMIS and The Northwestern Mutual Life Insurance Company for the High Yield Bond
Portfolio is hereby approved.
    YES    34,244,453.77   NO         156,184.39   ABSTAIN       2,189,223.37
 
BE IT RESOLVED, that the investment advisory agreement between the Corporation,
NMIS and The Northwestern Mutual Life Insurance Company for the International
Equity Portfolio is hereby approved and that the investment sub-advisory
agreement between NMIS and Templeton Investment Counsel, Inc. for the
International Equity Portfolio is hereby approved.
    YES   231,607,721.07    NO       3,840,003.82   ABSTAIN     10,160,909.98
 
                                       49
<PAGE>   53
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           INDEX 500 STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
COMMON STOCK (94.7%)
AEROSPACE (2.1%)
  The Boeing Company                       32,400    $  2,029
  EG&G, Inc.                                5,000          84
  General Dynamics Corporation              6,000         266
  Lockheed Martin Corporation              18,954       1,196
  Loral Corporation                         8,000         414
  McDonnell Douglas Corporation            10,800         829
  Northrop Corporation                      4,700         245
  Raytheon Company                         11,700         908
  Rockwell International Corporation       20,500         938
  TRW Inc.                                  6,200         495
  United Technologies Corp.                11,700         914
                                                     --------
      Total                                             8,318
                                                     --------
AIRLINES (0.3%)
  *AMR Corporation                          7,200         537
  Delta Air Lines, Inc.                     4,800         354
  Southwest Airlines Co.                   13,600         325
  *USAir Group, Inc.                        5,500          64
                                                     --------
      Total                                             1,280
                                                     --------
APPAREL, TEXTILES AND FOOTWEAR (0.4%)
  Brown Group, Inc.                         1,700          39
  *Fruit of the Loom Incorporated           7,200         152
  Liz Claiborne, Inc.                       7,100         151
  Nike, Inc.                                6,800         571
  Reebok International Ltd.                 7,600         258
  Russell Corp.                             3,700         106
  Springs Industries, Inc.                  1,900          71
  Stride Rite Corp.                         4,700          49
  VF Corporation                            6,000         322
                                                     --------
      Total                                             1,719
                                                     --------
AUTO & TRUCKS (2.0%)
  Chrysler Corporation                     35,000       1,675
  Ford Motor Company                       97,300       2,894
  General Motors Corporation               70,800       3,319
  *Navistar International Corp.             7,100         107
  PACCAR Incorporated                       3,635         170
                                                     --------
      Total                                             8,165
                                                     --------
AUTO RELATED (0.6%)
  Cooper Tire & Rubber Company              7,900         192
  Dana Corporation                          9,600         275
  Eaton Corporation                         7,400         430
  Echlin Inc.                               5,600         195
  Genuine Parts Company                    11,600         439
  Goodyear Tire & Rubber Company           14,400         594
  SPX Corp.                                 1,200          13
  Snap-On Incorporated                      3,800         147
                                                     --------
      Total                                             2,285
                                                     --------
BANKS (5.4%)
  Banc One Corporation                     37,350       1,204
  Bank of Boston Corporation               10,500         394
  Bank of New York Company Inc.            18,100         731
  BankAmerica Corporation                  35,500       1,868
  Bankers Trust New York Corporation        7,400         459
  Barnett Banks Inc.                        9,200         471
  Boatmans Bancshares, Inc.                11,900         419
  Chase Manhattan Corporation              16,800         790
 
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
BANKS (CONTINUED)
  Chemical Banking Corporation             22,800    $  1,077
  Citicorp                                 37,600       2,176
  Corestates Financial Corp.               13,700         478
  First Chicago Corporation                 8,500         509
  First Fidelity Bancorporation             7,700         454
  First Interstate Bancorp                  7,200         578
  First Union Corporation                  16,300         738
  Fleet Financial Group Inc.               13,400         497
  KeyCorp                                  22,500         706
  Mellon Bank Corporation                  13,850         576
  J.P. Morgan & Company, Inc.              17,800       1,248
  NBD Bancorp, Inc.                        15,200         486
  National City Corp.                      13,900         408
  NationsBank Corp.                        25,700       1,378
  Norwest Corporation                      30,700         883
  PNC Financial Corp.                      21,600         570
  Shawmut National Corp.                   12,200         389
  Suntrust Banks Inc.                      10,900         635
  U.S. Bancorp of Oregon                    9,300         224
  Wachovia Corporation                     16,200         579
  Wells Fargo & Company                     4,700         847
                                                     --------
      Total                                            21,772
                                                     --------
BEVERAGES (3.5%)
  Anheuser-Busch Companies, Inc.           24,300       1,382
  Brown-Forman Corp.                        6,500         217
  The Coca-Cola Company                   120,100       7,656
  Adolph Coors Co.                          3,600          59
  Pepsico Inc.                             74,600       3,404
  Seagram Company Ltd.                     35,300       1,222
                                                     --------
      Total                                            13,940
                                                     --------
BUILDING & CONSTRUCTION (0.3%)
  Centex Corporation                        2,700          76
  Crane Co.                                 2,900         105
  Kaufman & Broad Home Corp.                3,000          43
  Masco Corporation                        14,900         402
  Morrison Knudsen Corporation              3,000          20
  *Owens-Corning Fiberglas
    Corporation                             4,500         166
  Pulte Corporation                         2,500          70
  Sherwin-Williams Company                  8,100         289
                                                     --------
      Total                                             1,171
                                                     --------
BUILDING-FOREST PRODUCTS (0.7%)
  Boise Cascade Corporation                 4,500         182
  Champion International                    8,900         464
  Georgia-Pacific Corporation               8,600         746
  Louisiana-Pacific Corporation            10,200         268
  Potlatch Corporation                      2,800         117
  Weyerhaeuser Company                     19,500         919
                                                     --------
      Total                                             2,696
                                                     --------
CHEMICALS (2.9%)
  Air Products & Chemicals, Inc.           10,600         591
  Dow Chemical Company                     26,100       1,876
  E.I. Du Pont De Nemours & Co.            52,300       3,596
  Eastman Chemical Company                  7,825         466
  Ecolab, Inc.                              6,400         157
  *FMC Corporation                          3,500         235
  First Mississippi Corp.                   1,900          65
  W.R. Grace & Co.                          8,900         546
</TABLE>
 
                                       50
<PAGE>   54
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           INDEX 500 STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
COMMON STOCK (CONTINUED)
CHEMICALS (CONTINUED)
  Great Lakes Chemical                      6,300    $    380
  Hercules Incorporated                    11,000         536
  Mallinckrodt Group                        7,300         259
  Monsanto Company                         10,800         973
  PPG Industries Inc.                      19,500         838
  Praxair, Inc.                            13,100         328
  Rohm & Haas Company                       6,400         351
  Union Carbide Corporation                13,000         434
                                                     --------
      Total                                            11,631
                                                     --------
CHEMICALS-SPECIALTY (0.4%)
  Avery Dennison Corp.                      5,000         200
  Engelhard Corp.                           9,000         386
  B.F. Goodrich Company                     2,500         134
  Morton International, Inc.               14,000         410
  Nalco Chemical Company                    6,400         233
  Sigma-Aldrich Corp.                       4,700         231
                                                     --------
      Total                                             1,594
                                                     --------
COAL, GAS & PIPELINE (0.1%)
  Eastern Enterprises                       1,900          57
  NACCO Industries, Inc.                      800          48
  Sonat Inc.                                8,200         250
                                                     --------
      Total                                               355
                                                     --------
CONTAINERS (0.2%)
  Ball Corporation                          2,900         101
  Bemis Company, Inc.                       4,900         127
  *Crown Cork & Seal Company, Inc.          8,500         426
                                                     --------
      Total                                               654
                                                     --------
DIVERSIFIED (2.0%)
  Allied Signal Inc.                       26,900       1,197
  Corning Inc.                             21,700         711
  The Dial Corp.                            8,800         218
  ITT Corp.                                10,000       1,175
  Minnesota Mining & Manufacturing Co.     39,800       2,279
  National Service Industries, Inc.         4,600         133
  Ogden Corporation                         4,600         101
  *Teledyne, Inc.                           5,300         130
  Tenneco Inc.                             17,100         787
  Textron Inc.                              8,100         471
  Tyco Laboratories, Inc.                   7,200         389
  Whitman Corporation                       9,900         192
  Worthington Industries, Inc.              8,650         177
                                                     --------
      Total                                             7,960
                                                     --------
DRUGS (5.2%)
  *ALZA Corp.                               7,800         182
  American Home Products Corporation       29,200       2,259
  *Amgen Inc.                              12,500       1,005
  Bristol-Myers Squibb Company             48,000       3,270
  Eli Lily & Company                       27,700       2,174
  McKesson Corporation                      3,600         168
  Merck & Co., Inc.                       117,100       5,738
  Pfizer Inc.                              29,900       2,762
  Schering-Plough Corporation              35,200       1,553
  Upjohn Company                           16,400         621
  Warner-Lambert Company                   12,800       1,106
                                                     --------
      Total                                            20,838
                                                     --------
 
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
ELECTRICAL EQUIPMENT (3.0%)
  Emerson Electric Co.                     20,100    $  1,580
  General Electric Company                160,400       9,043
  W.W. Grainger, Inc.                       4,800         282
  Honeywell Inc.                           12,100         522
  Raychem Corp.                             4,200         161
  Thomas & Betts Corporation                1,900         130
  Westinghouse Electric Corporation        33,900         496
                                                     --------
      Total                                            12,214
                                                     --------
ELECTRONICS (2.5%)
  *Advanced Micro Devices, Inc.             9,800         356
  AMP Incorporated                         19,900         841
  *Applied Materials Inc.                   8,000         693
  Harris Corporation                        3,700         191
  Intel Corp.                              78,400       4,964
  Micron Technology                        19,400       1,065
  *National Semiconductor
    Corporation                            11,800         327
  Perkin-Elmer Corporation                  4,000         142
  Tektronix, Inc.                           3,100         153
  Texas Instruments Incorporated            8,800       1,178
  *Zenith Electronics Corp.                 4,400          32
                                                     --------
      Total                                             9,942
                                                     --------
ENGINEERING & CONSTRUCTION (0.1%)
  Fluor Corporation                         7,800         406
                                                     --------
ENVIRONMENTAL CONTROL (0.7%)
  Browning-Ferris Industries Inc.          20,200         730
  Johnson Controls, Inc.                    3,900         220
  Laidlaw Transportation Limited           26,300         253
  Millipore Corp.                           2,100         142
  Safety-Kleen Corp.                        5,500          89
  WMX Technologies, Inc.                   45,800       1,300
  Zurn Industries, Inc.                     1,100          22
                                                     --------
      Total                                             2,756
                                                     --------
FEDERAL GOVERNMENT AGENCY RELATED (0.9%)
  Federal Home Loan Mortgage Corp.         17,100       1,176
  Federal National Mortgage Assoc.         25,800       2,435
                                                     --------
      Total                                             3,611
                                                     --------
FINANCIAL SERVICES (1.8%)
  American Express Company                 47,000       1,651
  Beneficial Corporation                    5,000         220
  Dean Witter, Discover & Co.              16,000         752
  Household International Inc.              9,200         455
  MBNA Corp.                               14,100         476
  Marsh & McLennan Companies, Inc.          6,900         560
  Merrill Lynch & Co., Inc.                16,700         877
  Salomon Inc.                             10,100         405
  Transamerica Corporation                  6,600         384
  Travelers Group Inc.                     30,333       1,327
                                                     --------
      Total                                             7,107
                                                     --------
FOOD SERVICE/LODGING (1.0%)
  *Darden Restaurant Inc.                  15,000         163
  *Harrah's Entertainment                   9,700         378
  Hilton Hotels Corporation                 4,600         323
  Luby's Cafeterias, Inc.                   2,200          44
  Marriott International                   11,600         416
  McDonald's Corporation                   65,700       2,571
  *Ryan's Family Steak Houses, Inc.         4,900          39
</TABLE>
 
                                       51
<PAGE>   55
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           INDEX 500 STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
COMMON STOCK (CONTINUED)
FOOD SERVICE/LODGING (CONTINUED)
  *Shoney's Inc.                            3,800    $     45
  Wendy's International, Inc.               9,700         173
                                                     --------
      Total                                             4,152
                                                     --------
FOODS (3.1%)
  Archer Daniels Midland Company           48,840         910
  CPC International Corp.                  13,900         858
  Campbell Soup Company                    23,600       1,156
  ConAgra Inc.                             23,200         809
  General Mills, Inc.                      15,000         771
  H.J. Heinz Company                       23,100       1,025
  Hershey Foods Corp.                       8,200         453
  Kellogg Company                          20,800       1,485
  Pioneer Hi-Bred International             8,000         336
  Quaker Oats Company                      12,700         418
  Ralston Purina Group                      9,500         485
  Sara Lee Corporation                     45,400       1,294
  Unilever, N.V.                           15,200       1,978
  Wm. Wrigley Jr. Company                  11,000         510
                                                     --------
      Total                                            12,488
                                                     --------
HOSPITAL SUPPLIES (3.6%)
  Abbott Laboratories Inc.                 75,600       3,062
  Allergan Incorporated                     6,100         165
  C.R. Bard, Inc.                           4,900         147
  Bausch & Lomb Inc.                        5,500         228
  Baxter International Inc.                26,500         964
  Becton, Dickinson & Company               6,300         367
  *Beverly Enterprises, Inc.                8,100         100
  *Biomet, Inc.                            11,000         171
  *Boston Scientific Corp.                 14,200         453
  Columbia/HCA Healthcare
    Corporation                            42,000       1,817
  *Community Psychiatric Centers            4,000          45
  Johnson & Johnson                        61,100       4,132
  Manor Care, Inc.                          5,900         172
  Medtronic, Incorporated                  10,900         841
  St. Jude Medical, Inc.                    4,400         221
  *Tenet Healthcare Corp.                  18,900         272
  United Healthcare Corp.                  16,400         679
  U.S Healthcare Incorporated              15,200         466
  U.S. Surgical Corporation                 5,400         113
                                                     --------
      Total                                            14,415
                                                     --------
HOUSEHOLD FURNITURE/APPLIANCES (0.6%)
  Armstrong World Industries, Inc.          3,500         175
  Bassett Furniture Industries,
    Inc.                                    1,299          36
  Black & Decker Corporation                8,100         250
  Maytag Corporation                       10,200         163
  Newell Co.                               15,000         368
  Premark International, Inc.               5,800         301
  Rubbermaid, Inc.                         15,200         422
  The Stanley Works                         4,200         159
  Whirlpool Corporation                     7,000         385
                                                     --------
      Total                                             2,259
                                                     --------
INSURANCE (2.6%)
  Aetna Life & Casualty Company            10,700         673
  Alexander & Alexander Services            4,200         100
  American General Corporation             19,400         655
  American International Group,
    Inc.                                   29,900       3,409
 
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
INSURANCE (CONTINUED)
  CIGNA Corporation                         6,800    $    528
  The Chubb Corporation                     8,200         657
  General Re Corporation                    7,800       1,044
  Jefferson-Pilot Corp.                     4,600         252
  Lincoln National Corporation              9,000         394
  Loews Corp.                               5,600         678
  Providian Corporation                     9,100         330
  SAFECO Corp.                              6,000         345
  St. Paul Companies, Inc.                  8,000         394
  Torchmark Corporation                     6,800         257
  UNUM Corporation                          6,900         323
  USF&G Corp.                               9,400         153
  USLIFE Corporation                        2,200          89
                                                     --------
      Total                                            10,281
                                                     --------
LEISURE RELATED (1.4%)
  *Bally Entertainment Corporation          4,300          53
  Brunswick Corporation                     9,100         155
  Walt Disney Company                      49,300       2,742
  Fleetwood Enterprises, Inc.               4,400          87
  Handleman Co.                             3,100          30
  Hasbro Inc.                               8,300         264
  *King World Productions, Inc.             3,500         142
  Mattel, Inc.                             20,931         544
  Outboard Marine Corporation               1,800          35
  Skyline Corporation                       1,000          18
  *Viacom Incorporated                     34,056       1,571
                                                     --------
      Total                                             5,641
                                                     --------
MACHINERY (1.4%)
  Briggs & Stratton Corporation             2,800          97
  Caterpillar Inc.                         18,900       1,214
  Cincinnati Milacron Inc.                  3,200          86
  *Clark Equipment Company                  1,600         138
  Cooper Industries, Inc.                  11,100         438
  Cummins Engine Company, Inc.              3,900         170
  Deere & Company                           8,200         702
  Dover Corporation                         5,400         393
  Foster Wheeler Corporation                3,400         120
  General Signal Corporation                4,500         179
  Giddings & Lewis Company                  3,300          59
  Harnischfeger Industries, Inc.            4,400         152
  Illinois Tool Works Inc.                 10,800         594
  Ingersoll-Rand Company                   10,000         383
  Pall Corporation                         11,000         245
  Parker-Hannifin Corporation               6,950         252
  The Timken Company                        2,900         134
  TRINOVA Corp.                             2,700          95
  *Varity Corporation                       3,900         172
                                                     --------
      Total                                             5,623
                                                     --------
MEDIA (1.0%)
  CBS Inc.                                  5,800         389
  Capital Cities/ABC, Inc.                 14,600       1,576
  Comcast Corp.                            22,650         420
  *Cox Communications Inc.                      2           1
  *Tele-Communications, Inc.               61,800       1,448
                                                     --------
      Total                                             3,834
                                                     --------
METALS & MINING (1.3%)
  Alcan Aluminum Limited                   21,300         644
</TABLE>
 
                                       52
<PAGE>   56
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           INDEX 500 STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
COMMON STOCK (CONTINUED)
METALS & MINING (CONTINUED)
  Aluminum Co. of America                  16,900    $    847
  ASARCO, Inc.                              4,000         122
  Barrick Gold Corporation                 33,500         846
  Cyprus Minerals Co.                       8,750         249
  Echo Bay Mines Limited                   10,700          96
  Homestake Mining Company                 13,100         216
  Inco Limited                             11,100         314
  Newmont Mining Corporation                8,188         343
  Phelps Dodge Corporation                  6,600         389
  Placer Dome Incorporated                 22,600         590
  Reynolds Metals Company                   6,000         311
  Santa Fe Pacific Gold Corporation        12,460         151
                                                     --------
      Total                                             5,118
                                                     --------
OFFICE EQUIPMENT (4.1%)
  *Amdahl Corporation                      11,200         125
  Apple Computer, Inc.                     11,500         534
  *Cabletron Systems Inc.                   6,800         362
  *Ceridian Corp.                           4,300         159
  *Cisco Systems Incorporated              25,400       1,284
  *Compaq Computer Corporation             24,800       1,125
  *Cray Research, Inc.                      2,300          56
  *Data General Corporation                 3,400          33
  *Digital Equipment Corporation           13,900         566
  Hewlett-Packard Company                  48,300       3,598
  *Intergraph Corp.                         4,300          48
  International Business Machines
    Corp.                                  55,000       5,280
  Moore Corporation Ltd.                    9,400         208
  Pitney Bowes Inc.                        14,300         549
  *Silicon Graphics                        13,700         546
  *Sun Microsystems Inc.                    9,100         441
  *Tandem Computers Inc.                   11,000         177
  *Unisys Corporation                      16,200         176
  Xerox Corporation                        10,100       1,184
                                                     --------
      Total                                            16,451
                                                     --------
OFFICE EQUIPMENT-SERVICES (2.8%)
  Alco Standard Corporation                 5,200         415
  Autodesk, Inc.                            4,500         193
  Automatic Data Processing, Inc.          13,700         861
  Computer Associates International
    Inc.                                   15,200       1,030
  *Computer Sciences Corp.                  5,200         296
  First Data Corporation                   11,300         643
  *Lotus Development Corporation            4,500         287
  *Microsoft Corporation                   55,100       4,980
  *Novell, Inc.                            34,700         692
  *Oracle Systems                          40,800       1,576
  Shared Medical Systems Corp.              2,200          88
                                                     --------
      Total                                            11,061
                                                     --------
OIL & GAS-DOMESTIC (1.6%)
  Amerada Hess Corporation                  8,800         430
  Ashland Oil, Inc.                         5,900         207
  Atlantic Richfield Company               15,200       1,668
  Burlington Resource Inc.                 12,000         443
  Coastal Corp.                             9,900         301
  Kerr-McGee Corporation                    4,900         263
  Louisiana Land & Exploration Co.          3,200         128
  Occidental Petroleum Corporation         30,100         689
  *Oryx Energy Company                      9,800         135
 
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
OIL & GAS-DOMESTIC (CONTINUED)
  Pennzoil Company                          4,400    $    207
  Phillips Petroleum Company               24,800         828
  *Santa Fe Energy Resources, Inc.          8,500          81
  Sun Company, Inc.                        10,100         276
  Unocal Corp.                             23,100         638
                                                     --------
      Total                                             6,294
                                                     --------
OIL & GAS-INTERNATIONAL (6.4%)
  Amoco Company                            47,000       3,131
  Chevron Corp.                            61,800       2,881
  Exxon Corporation                       117,700       8,312
  Mobil Corporation                        37,500       3,600
  Royal Dutch Petroleum Co., ADR           50,800       6,191
  Texaco Inc.                              24,600       1,614
                                                     --------
      Total                                            25,729
                                                     --------
OIL FIELD SERVICES (0.7%)
  Baker Hughes Inc.                        13,400         275
  Dresser Industries, Inc.                 17,300         385
  Halliburton Company                      10,800         386
  Helmerich & Payne, Inc.                   2,300          68
  McDermott International, Inc.             5,100         123
  *Rowan Companies, Inc.                    8,000          65
  Schlumberger Limited                     22,900       1,423
  *Western Atlas Inc.                       5,000         222
                                                     --------
      Total                                             2,947
                                                     --------
PAPER (1.1%)
  Federal Paper Board Company, Inc.         4,000         141
  International Paper Company              12,000       1,029
  James River Corp. of Virginia             7,800         215
  Kimberly-Clark Corporation               15,200         910
  Mead Corp.                                5,300         315
  Scott Paper Company                      14,300         708
  *Stone Container Corporation              8,600         183
  Temple-Inland Inc.                        5,300         252
  Union Camp Corporation                    6,600         382
  Westvaco Corporation                      6,400         283
                                                     --------
      Total                                             4,418
                                                     --------
PHOTO & OPTICAL (0.5%)
  Eastman Kodak Company                    32,200       1,952
  Polaroid Corporation                      4,300         175
                                                     --------
      Total                                             2,127
                                                     --------
PRINTING & PUBLISHING (1.6%)
  American Greetings Corp.                  7,000         206
  Deluxe Corp.                              7,800         258
  R.R. Donnelley & Sons Company            14,400         518
  Dow Jones & Company, Inc.                 9,200         339
  The Dun & Bradstreet Corporation         16,100         845
  Gannett Company, Inc.                    13,300         722
  Harcourt General                          6,900         293
  The John H. Harland Company               2,900          66
  Jostens, Inc.                             4,300          91
  Knight-Ridder Inc.                        4,700         267
  McGraw-Hill, Inc.                         4,700         357
  Meredith Corporation                      2,600          66
  New York Times Co.                        9,100         214
  Time Warner Inc.                         36,000       1,481
  Times Mirror Company                     10,600         253
</TABLE>
 
                                       53
<PAGE>   57
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           INDEX 500 STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
COMMON STOCK (CONTINUED)
PRINTING & PUBLISHING (CONTINUED)
  Tribune Company                           6,200    $    381
                                                     --------
      Total                                             6,357
                                                     --------
PROFESSIONAL SERVICES (0.4%)
  H & R Block, Inc.                         9,900         407
  *CUC International Inc.                  10,900         458
  Interpublic Group of Cos., Inc.           7,400         278
  Service Corporation International         9,100         288
                                                     --------
      Total                                             1,431
                                                     --------
RAILROADS (1.0%)
  Burlington Northern Railroad              8,500         539
  CSX Corporation                          10,000         751
  Conrail Incorporated                      7,400         412
  Norfolk Southern Corporation             12,500         842
  Santa Fe Pacific Corp.                   14,388         367
  Union Pacific Corporation                19,400       1,074
                                                     --------
      Total                                             3,985
                                                     --------
RETAIL-FOOD (0.7%)
  Albertson's, Inc.                        24,100         717
  American Stores Co.                      14,100         397
  Bruno's Inc.                              7,400          86
  Fleming Companies, Inc.                   3,500          93
  Giant Food Inc.                           5,600         159
  Great Atlantic & Pacific Tea Co.,
    Inc.                                    3,600          95
  *The Kroger Company                      10,600         285
  Supervalu Inc.                            6,600         192
  Sysco Corporation                        17,300         510
  Winn-Dixie Stores, Inc.                   7,200         416
                                                     --------
      Total                                             2,950
                                                     --------
RETAIL-GENERAL (4.7%)
  Charming Shoppes Incorporated             9,400          49
  Circuit City Stores, Inc.                 9,100         288
  Dayton Hudson Corporation                 6,800         488
  Dillard Department Stores, Inc.          10,700         314
  The Gap, Inc.                            13,600         474
  Home Depot, Inc.                         42,899       1,743
  K Mart Corporation                       43,300         633
  The Limited Inc.                         33,800         744
  Longs Drug Stores Corp.                   1,900          71
  Lowe's Companies, Inc.                   15,100         451
  May Department Stores Company            23,500         978
  Melville Corporation                      9,900         339
  Mercantile Stores Company                 3,500         163
  Nordstrom, Inc.                           7,800         323
  J.C. Penney Company, Inc.                22,000       1,056
  Pep Boys - Manny, Moe & Jack              5,800         155
  *Price/Costco, Inc.                      18,407         299
  Rite Aid Corporation                      8,000         205
  Sears, Roebuck & Company                 36,800       2,203
  The TJX Companies, Inc.                   6,900          91
  Tandy Corporation                         7,000         363
  *Toys "R" Us                             26,300         769
  Wal-Mart Stores, Inc.                   217,600       5,821
  Walgreen Company                         11,700         586
  *Woolworth Corp.                         12,600         190
                                                     --------
      Total                                            18,796
                                                     --------
 
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
SAVINGS & LOAN (0.2%)
  H.F. Ahmanson & Company                  11,100    $    244
  Golden West Financial Corporation         5,600         264
  Great Western Financial
    Corporation                            12,800         264
                                                     --------
      Total                                               772
                                                     --------
SOAPS & TOILETRIES (2.2%)
  Alberto-Culver Company                    2,600          79
  Avon Products, Inc.                       6,500         436
  The Clorox Company                        5,000         326
  Colgate-Palmolive Co.                    13,700       1,002
  Gillette Company                         42,000       1,874
  International Flavors & Fragrances, Inc. 10,600         527
  The Procter & Gamble Company             65,100       4,679
                                                     --------
      Total                                             8,923
                                                     --------
STEEL (0.4%)
  *Armco Inc.                              10,000          68
  Bethlehem Steel Corporation              10,400         169
  Inland Steel Industries, Inc.             4,600         140
  Nucor Corp.                               8,300         444
  USX-Marathon Group                       28,200         557
  USX-U S Steel Group Inc.                  7,200         248
                                                     --------
      Total                                             1,626
                                                     --------
TELECOMMUNICATIONS (3.4%)
  AT&T Corporation                        149,900       7,963
  *Andrew Corporation                       3,650         211
  *DSC Communications Corp.                10,800         502
  *M/A-Com, Inc.                            2,400          28
  Motorola, Inc.                           55,800       3,746
  Northern Telecom Limited                 24,000         876
  Scientific-Atlanta, Inc.                  7,300         161
                                                     --------
      Total                                            13,487
                                                     --------
TOBACCO (1.8%)
  American Brands, Inc.                    17,900         712
  Philip Morris Companies, Inc.            80,000       5,950
  UST Incorporated                         18,500         550
                                                     --------
      Total                                             7,212
                                                     --------
TRANSPORTATION-MISC. (0.0%)
  Pittston Services Group                   3,900          94
                                                     --------
TRUCKING-SHIPPING (0.2%)
  Consolidated Freightways, Inc.            4,100          91
  *Federal Express Corp.                    5,300         322
  Roadway Services, Inc.                    3,700         175
  Ryder System, Inc.                        7,500         179
  Yellow Corp.                              2,600          47
                                                     --------
      Total                                               814
                                                     --------
UTILITY-ELECTRIC (3.6%)
  American Electric Power Co. Inc.         17,600         618
  Baltimore Gas & Electric Company         14,000         350
  Carolina Power & Light Company           14,800         448
  Central & South West Corporation         18,100         475
  Cinergy Corporation                      14,717         386
  Consolidated Edison Co. of New
    York                                   22,300         658
  Detroit Edison Company                   13,700         404
  Dominion Resources Inc.                  16,400         599
  Duke Power Company                       19,400         805
  Entergy Corporation                      21,600         521
</TABLE>
 
                                       54
<PAGE>   58
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           INDEX 500 STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
COMMON STOCK (CONTINUED)
UTILITY-ELECTRIC (CONTINUED)
  FPL Group, Inc.                          17,600    $    680
  General Public Utilities                 10,900         324
  Houston Industries Incorporated          12,400         522
  Niagara Mohawk Power Corporation         13,700         202
  Northern States Power Company             6,400         295
  Ohio Edison Company                      14,500         328
  PECO Energy Company                      21,000         580
  Pacific Enterprises                       7,800         191
  Pacific Gas & Electric Company           40,700       1,180
  PacifiCorp                               26,900         504
  Public Service Enterprise Group,
    Inc.                                   23,200         644
  SCEcorp                                  42,400         726
  The Southern Company                     63,000       1,410
  Texas Utilities Company                  21,400         736
  Unicom Corp.                             20,300         540
  Union Electric Company                    9,700         361
                                                     --------
      Total                                            14,487
                                                     --------
UTILITY-GAS (0.6%)
  *Columbia Gas System Inc.                 4,800         152
  Consolidated Natural Gas Company          8,800         332
  Enron Corp                               23,800         836
  ENSERCH Corporation                       6,400         110
  Nicor Inc.                                4,800         129
  Noram Energy Corporation                 11,700          76
  ONEOK, Inc.                               2,600          56
  Panhandle Eastern Corporation            14,000         344
  Peoples Energy Corporation                3,300          85
  Williams Companies Inc.                   9,600         335
                                                     --------
      Total                                             2,455
                                                     --------
UTILITY-TELEPHONE (5.6%)
  ALLTEL Corp.                             17,900         454
  *Airtouch Communications                 46,800       1,334
  Ameritech Corporation                    52,400       2,306
 
<CAPTION>
                                                      MARKET
                                        SHARES/       VALUE
                                          PAR        (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
UTILITY-TELEPHONE (CONTINUED)
  Bell Atlantic Corporation                41,300    $  2,313
  Bellsouth Corporation                    47,000       2,985
  GTE Corporation                          91,900       3,136
  MCI Communications Corporation           64,400       1,417
  NYNEX Corp.                              40,300       1,622
  Pacific Telesis Group                    40,200       1,075
  SBC Communications Incorporated          57,600       2,743
  Sprint Corporation                       33,000       1,110
  U S West Inc.                            44,600       1,856
                                                     --------
      Total                                            22,351
                                                     --------
      Total Common Stock                              378,992
                                                     --------
PREFERRED STOCK (0.00%)
DIVERSIFIED (0.00%)
  Teledyne, Inc.                       $      102    $      1
                                                     --------
      Total Preferred Stock                                 1
                                                     --------
MONEY MARKET INVESTMENTS (5.3%)
FEDERAL GOVERNMENT & AGENCIES (0.8%)
  U.S. Treasury, 5.65%, 7/6/95         $1,600,000    $  1,599
  +U.S. Treasury, 5.4%, 12/21/95        1,600,000       1,556
                                                     --------
      Total                                             3,155
                                                     --------
FINANCIAL SERVICES (2.0%)
  Weyerhaeuser Mortgage Company,
    5.96%, 7/24/95                      8,000,000       7,970
                                                     --------
FOODS (2.5%)
  Cargill Incorporated, 6.1%, 7/3/95    3,900,000       3,899
  H.J. Heinz Company, 5.86%, 7/13/95    6,000,000       5,988
                                                     --------
      Total                                             9,887
                                                     --------
      Total Money Market Investments                   21,012
                                                     --------
      Total Investments                              $400,005
                                                     ========
</TABLE>
 
* Non-Income Producing
 
+ Partially held by the custodian in a segregated account as collateral for open
  financial futures positions. Information regarding open futures contracts as
  of June 30, 1995 is summarized below:
 
<TABLE>
<CAPTION>
                                                                              UNREALIZED
                                        MARKET VALUE                         APPRECIATION
                          NUMBER OF     OF CONTRACTS       EXPIRATION       (DEPRECIATION)
         ISSUER           CONTRACTS       (000'S)             DATE             (000'S)
  --------------------    ---------     ------------     --------------     --------------
  <S>                     <C>           <C>              <C>                <C>
  S&P 500 Stock Index         68          $ 18,603       September 1995          $807
  S&P 500 Stock Index          8             2,205       December 1995            (11)
                                        ------------                           ------
        Total                             $ 20,808                               $796
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       55
<PAGE>   59
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             GROWTH STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                       VALUE
                                          SHARES      (000'S)
                                        ----------    -------
<S>                                     <C>           <C>
COMMON STOCK (91.7%)
AEROSPACE (1.0%)
  The Boeing Company                        10,000    $   626
                                                      -------
AIRLINES (0.4%)
  *AMR Corporation                           3,600        269
                                                      -------
AUTO & TRUCKS (0.9%)
  Chrysler Corporation                      11,000        527
                                                      -------
AUTO RELATED (2.2%)
  Eaton Corporation                         13,900        808
  Magna International Inc.                  12,200        538
                                                      -------
      Total                                             1,346
                                                      -------
BANKS (4.4%)
  Chase Manhattan Corporation                5,700        268
  Citicorp                                  13,200        764
  First Interstate Bancorp                   8,800        706
  First Union Corporation                    7,900        357
  Mellon Bank Corporation                   13,950        581
                                                      -------
      Total                                             2,676
                                                      -------
BEVERAGES (2.4%)
  The Coca-Cola Company                      8,600        548
  Pepsico Inc.                              19,700        899
                                                      -------
      Total                                             1,447
                                                      -------
CHEMICALS (3.3%)
  Air Products & Chemicals, Inc.            13,700        764
  E.I. Du Pont Du Nemours & Co.             10,150        698
  Ecolab, Inc.                               1,000         24
  PPG Industries Inc.                       13,100        563
                                                      -------
      Total                                             2,049
                                                      -------
CHEMICALS-SPECIALITY (0.7%)
  Avery Dennison Corp.                      11,100        444
                                                      -------
CONTAINERS (1.2%)
  *Crown Cork & Seal Company, Inc.          14,100        707
                                                      -------
DIVERSIFIED (0.8%)
  Tenneco Inc.                              10,100        465
                                                      -------
DRUGS (3.0%)
  *Forest Laboratories Inc.                 15,200        674
  Merck & Co., Inc.                         15,000        735
  Pfizer Inc.                                5,000        462
                                                      -------
      Total                                             1,871
                                                      -------
ELECTRICAL EQUIPMENT (4.3%)
  Emerson Electric Co.                      15,000      1,072
  General Electric Company                  14,300        806
  W.W. Grainger, Inc.                       12,600        740
                                                      -------
      Total                                             2,618
                                                      -------
ELECTRONICS (4.0%)
  Hewlett-Packard Company                   14,000      1,043
  Intel Corp.                               11,600        734
  Molex Inc.                                18,525        676
                                                      -------
      Total                                             2,453
                                                      -------
ENVIRONMENTAL CONTROL (1.6%)
  Browning-Ferris Industries Inc.           27,700      1,000
                                                      -------
 
<CAPTION>
                                                      MARKET
                                                       VALUE
                                          SHARES      (000'S)
                                        ----------    -------
<S>                                     <C>           <C>
FINANCIAL SERVICES (2.5%)
  Dean Witter, Discover & Co.               16,700    $   785
  Franklin Resources                         7,400        329
  PMI Group Inc.                            10,000        434
                                                      -------
      Total                                             1,548
                                                      -------
FOOD SERVICE/LODGING (2.0%)
  *Harrah's Entertainment                   14,900        581
  McDonald's Corporation                    16,600        649
                                                      -------
      Total                                             1,230
                                                      -------
FOODS (5.0%)
  CPC International Corp.                    6,700        414
  Campbell Soup Company                     13,400        657
  Dean Foods Co.                            20,600        577
  General Mills, Inc.                        9,700        498
  Hormel Co.                                12,000        314
  Kellogg Company                            8,500        607
                                                      -------
      Total                                             3,067
                                                      -------
HOSPITAL SUPPLIES (5.2%)
  Columbia/HCA Healthcare Corporation       19,700        852
  Johnson & Johnson                         12,400        839
  Manor Care, Inc.                          29,000        845
  United Healthcare Corporation             15,500        641
                                                      -------
      Total                                             3,177
                                                      -------
HOUSEHOLD FURNITURE (2.2%)
  Newell Co.                                34,000        833
  Rubbermaid, Inc.                           5,200        144
  The Stanley Works                         10,300        390
                                                      -------
      Total                                             1,367
                                                      -------
INSURANCE (0.8%)
  Aetna Life & Casualty Company              8,300        522
                                                      -------
LEISURE RELATED (3.6%)
  CBS Inc.                                  10,800        724
  Walt Disney Company                       14,600        812
  Mattel, Inc.                              27,025        703
                                                      -------
      Total                                             2,239
                                                      -------
MACHINERY (1.9%)
  Deere & Company                            3,400        291
  Ingersoll-Rand Company                    23,700        907
                                                      -------
      Total                                             1,198
                                                      -------
NATURAL GAS-PIPELINES (0.2%)
  El Paso Natural Gas Company                5,000        142
                                                      -------
OFFICE EQUIPMENT (3.5%)
  International Business Machines
    Corp.                                   10,500      1,008
  Xerox Corporation                         10,000      1,173
                                                      -------
      Total                                             2,181
                                                      -------
OFFICE EQUIPMENT-SERVICES (3.7%)
  Alco Standard Corporation                 11,200        895
  Automatic Data Processing, Inc.            7,300        459
  *Microsoft Corporation                    10,300        931
                                                      -------
      Total                                             2,285
                                                      -------
</TABLE>
 
                                       56
<PAGE>   60
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             GROWTH STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                       VALUE
                                          SHARES      (000'S)
                                        ----------    -------
<S>                                     <C>           <C>
COMMON STOCK (CONTINUED)
OIL & GAS-DOMESTIC (2.6%)
  Ashland Oil, Inc.                          9,100    $   320
  Occidental Petroleum Corporation          21,800        499
  Unocal Corp.                              27,700        765
                                                      -------
      Total                                             1,584
                                                      -------
OIL & GAS-INTERNATIONAL (3.8%)
  Amoco Company                              7,100        473
  Exxon Corporation                          8,200        579
  Mobil Corporation                          9,800        941
  Texaco Inc.                                5,400        354
                                                      -------
      Total                                             2,347
                                                      -------
PAPER (1.5%)
  International Paper Company                7,000        600
  Union Camp Corporation                     5,000        289
                                                      -------
      Total                                               889
                                                      -------
PRINTING & PUBLISHING (2.5%)
  American Greetings Corp.                  17,400        511
  McGraw-Hill, Inc.                          6,100        463
  Tribune Company                            9,500        583
                                                      -------
      Total                                             1,557
                                                      -------
RAILROADS (1.4%)
  Burlington Northern Railroad              10,700        678
  CSX Corporation                            2,800        210
                                                      -------
      Total                                               888
                                                      -------
REAL ESTATE INVESTMENT TRUST (0.3%)
  Oasis Residential                          7,400        161
                                                      -------
RETAIL-FOOD (1.0%)
  Albertson's, Inc.                         20,500        610
                                                      -------
RETAIL-GENERAL (6.9%)
  Dayton Hudson Corporation                  7,200        517
  *Federated Department Stores              14,100        363
  Home Depot, Inc.                          18,900        768
  *Officemax, Inc.                          36,900      1,029
  J.C. Penney Company, Inc.                 13,100        629
  *Toys "R" Us                              13,000        380
  Wal-Mart Stores, Inc.                     20,200        540
                                                      -------
      Total                                             4,226
 
<CAPTION>
                                                      MARKET
                                          SHARES       VALUE
                                           /PAR       (000'S)
                                        ----------    -------
<S>                                     <C>           <C>
RETAIL-GENERAL (CONTINUED)
                                                      -------
SOAPS & TOILETRIES (2.5%)
  Colgate-Palmolive Company                 12,200    $   892
  Gillette Company                          14,600        652
                                                      -------
      Total                                             1,544
                                                      -------
TELECOMMUNICATIONS (3.2%)
  AT&T Corporation                          17,600        935
  MCI Communications Corporation             6,700        147
  Motorola, Inc.                            13,500        906
                                                      -------
      Total                                             1,988
                                                      -------
UTILITY-ELECTRIC (2.6%)
  Duke Power Company                        16,500        685
  FPL Group, Inc.                            5,800        224
  *Huaneng Power International              14,500        266
  The Southern Company                      17,900        401
                                                      -------
      Total                                             1,576
                                                      -------
UTILITY-TELEPHONE (2.6%)
  Ameritech Corporation                     12,400        546
  GTE Corporation                           19,600        669
  U S West Inc.                              9,500        395
                                                      -------
      Total                                             1,610
                                                      -------
      Total Common Stock                               56,434
                                                      -------
MONEY MARKET INVESTMENTS (8.3%)
FINANCIAL SERVICES (2.0%)
  Xerox Credit Corporation, 5.96%,
    7/24/95                             $1,200,000    $ 1,195
                                                      -------
FOODS (1.3%)
  Cargill Incorporated, 6.1%, 7/3/95       600,000        600
  H.J. Heinz Company, 5.86%, 7/13/95       200,000        200
                                                      -------
      Total                                               800
                                                      -------
RETAIL-GENERAL (1.0%)
  Wal-Mart Stores, Inc., 5.97%,
    7/5/95                                 600,000        600
                                                      -------
SOAPS & TOILETRIES (4.0%)
  Colgate-Palmolive Company, 5.92%,
    8/7/95                               2,500,000      2,484
                                                      -------
      Total Money Market Investments                    5,079
                                                      -------
      Total Investments                               $61,513
                                                      =======
</TABLE>
 
* Non-Income Producing
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       57
<PAGE>   61
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       GROWTH AND INCOME STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                        --------     --------
<S>                                     <C>          <C>
COMMON STOCK (98.2%)
AEROSPACE (2.5%)
  Sundstrand Corp.                        42,300     $  2,527
                                                     --------
APPAREL, TEXTILES (0.3%)
  *INTERCO Inc.                           53,000          311
                                                     --------
AUTO & TRUCKS (2.1%)
  General Motors Corporation              44,600        2,091
                                                     --------
AUTO RELATED (0.8%)
  Cooper Tire & Rubber Company            31,900          777
                                                     --------
BANKS (6.2%)
  BankAmerica Corporation                 29,700        1,563
  First Union Corporation                 23,600        1,068
  Firstar Corporation                     31,300        1,052
  Fleet Financial Group Inc.              28,600        1,062
  NationsBank Corp.                       26,600        1,426
                                                     --------
      Total                                             6,171
                                                     --------
BEVERAGES (3.3%)
  Anheuser-Busch Companies Inc.           21,700        1,234
  The Coca-Cola Company                   11,000          701
  Pepsico Inc.                            31,100        1,419
                                                     --------
      Total                                             3,354
                                                     --------
CHEMICALS (2.7%)
  E.I. Du Pont De Nemours & Co.            8,400          578
  Freeport McMoRan Copper & Gold          45,019          929
  Freeport McMoRan Incorporated            8,900          157
  Union Carbide Corporation               31,000        1,035
                                                     --------
      Total                                             2,699
                                                     --------
CHEMICALS-SPECIALTY (1.1%)
  Wellman Inc.                            38,900        1,065
                                                     --------
CONTAINERS (0.5%)
  *Crown Cork & Seal Company, Inc.         9,600          481
                                                     --------
DIVERSIFIED (5.8%)
  Allied Signal Inc.                      45,700        2,034
  *Coltec Industries, Inc.                70,500        1,216
  ITT Corp.                               21,900        2,573
                                                     --------
      Total                                             5,823
                                                     --------
DRUGS (1.9%)
  Eli Lily & Company                      13,100        1,028
  Warner-Lambert Company                   9,600          829
                                                     --------
      Total                                             1,857
                                                     --------
ELECTRICAL EQUIPMENT (2.8%)
  General Electric Company                34,200        1,928
  W.W. Grainger, Inc.                     15,100          887
                                                     --------
      Total                                             2,815
                                                     --------
ELECTRONICS (2.1%)
  Harris Corporation                      22,800        1,177
  Tyco Laboratories, Inc.                 18,000          972
                                                     --------
      Total                                             2,149
                                                     --------
ENVIRONMENTAL CONTROL (1.5%)
  Wheelabrator Technologies Inc.          97,500        1,499
                                                     --------
 
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                        --------     --------
<S>                                     <C>          <C>
FINANCIAL SERVICES (0.5%)
  Dean Witter, Discover & Co.             10,400     $    489
                                                     --------
FOODS (2.0%)
  General Mills, Inc.                     16,200          832
  Kellogg Company                         16,200        1,156
                                                     --------
      Total                                             1,988
                                                     --------
HOSPITAL SUPPLIES (5.6%)
  Bausch & Lomb Inc.                      44,300        1,838
  Columbia/HCA Healthcare Corp.           29,800        1,289
  Healthcare Retirement Corp.             42,900        1,255
  Humana, Inc.                            72,600        1,280
                                                     --------
      Total                                             5,662
                                                     --------
INSURANCE (3.8%)
  AMBAC, Inc.                             23,400          939
  First Colony Corporation                68,200        1,637
  Providian Corporation                   34,300        1,243
                                                     --------
      Total                                             3,819
                                                     --------
LEISURE RELATED (2.5%)
  *Circus Circus Enterprises              34,700        1,223
  International Game Technology           85,100        1,308
                                                     --------
      Total                                             2,531
                                                     --------
MACHINERY (1.2%)
  Cooper Industries, Inc.                 31,400        1,240
                                                     --------
MEDIA (4.2%)
  CBS Inc.                                28,000        1,876
  *Cox Communications Inc.                31,400          608
  *Tele-Communications, Inc.              72,500        1,699
                                                     --------
      Total                                             4,183
                                                     --------
METALS & MINING (2.0%)
  Aluminum Co. of America                 25,500        1,278
  Phelps Dodge Corporation                12,200          720
                                                     --------
      Total                                             1,998
                                                     --------
OFFICE EQUIPMENT (1.3%)
  International Business Machines
    Corp.                                  8,000          768
  Quantum Corp.                           22,500          515
                                                     --------
      Total                                             1,283
                                                     --------
OFFICE EQUIPMENT-SERVICES (2.4%)
  Adobe Systems Incorporated              27,400        1,589
  *Novell, Inc.                           43,100          859
                                                     --------
      Total                                             2,448
                                                     --------
OIL & GAS-DOMESTIC (2.5%)
  Anadarko Petroleum Corp.                15,300          660
  Ashland Oil, Inc.                       41,700        1,465
  Sun Company, Inc.                       15,200          416
                                                     --------
      Total                                             2,541
                                                     --------
OIL & GAS-INTERNATIONAL (6.0%)
  Exxon Corporation                       15,800        1,116
  Mobil Corporation                       19,900        1,910
  Royal Dutch Petroleum Co., ADR          16,000        1,950
  Texaco Inc.                             16,000        1,050
                                                     --------
      Total                                             6,026
                                                     --------
</TABLE>
 
                                       58
<PAGE>   62
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       GROWTH AND INCOME STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                        --------     --------
<S>                                     <C>          <C>
COMMON STOCK (CONTINUED)
PROFESSIONAL SERVICES (1.8%)
  Service Corporation International       55,900     $  1,768
                                                     --------
RAILROADS (2.5%)
  Canadian Pacific Limited                62,100        1,079
  Union Pacific Corporation               26,600        1,473
                                                     --------
      Total                                             2,552
                                                     --------
RETAIL-GENERAL (7.7%)
  Melville Corporation                    45,300        1,552
  Nordstrom, Inc.                         18,600          770
  J.C. Penney Company, Inc.               27,700        1,330
  *Symbol Technologies Inc.               34,600        1,328
  TJX Companies, Inc.                     73,300          971
  Wal-Mart Stores, Inc.                   66,000        1,766
                                                     --------
      Total                                             7,717
                                                     --------
SAVINGS & LOAN (0.7%)
  H.F. Ahmanson & Company                 32,800          722
                                                     --------
SOAPS & TOILETRIES (2.8%)
  Avon Products, Inc.                     19,200        1,286
  The Procter & Gamble Company            20,700        1,488
                                                     --------
      Total                                             2,774
                                                     --------
TELECOMMUNICATIONS (4.6%)
  AT&T Corporation                        32,200        1,711
  *Bay Networks                           49,100        2,032
  Motorola, Inc.                          13,500          906
                                                     --------
      Total                                             4,649
                                                     --------
TOBACCO (2.1%)
  Philip Morris Companies, Inc.           27,700        2,060
                                                     --------
 
<CAPTION>
                                                      MARKET
                                         SHARES       VALUE
                                          /PAR       (000'S)
                                        --------     --------
<S>                                     <C>          <C>
UTILITY-ELECTRIC (3.3%)
  Allegheny Power System, Inc.            30,900     $    726
  Dominion Resources Inc.                 18,100          661
  Public Service Co. of Colorado          25,400          826
  Western Resources                       33,900        1,047
                                                     --------
      Total                                             3,260
                                                     --------
UTILITY-TELEPHONE (5.1%)
  Bellsouth Corporation                   16,300        1,035
  MCI Communications Corporation          93,000        2,046
  Pacific Telesis Group                   37,100          992
  U S West Inc.                           24,500        1,020
                                                     --------
      Total                                             5,093
                                                     --------
      Total Common Stock                               98,422
                                                     --------
MONEY MARKET INVESTMENTS (1.8%)
FINANCIAL SERVICES (0.7%)
  Xerox Credit Corporation,
    5.96%, 7/24/95                      $700,000     $    697
                                                     --------
FOODS (0.3%)
  Cargill Incorporated,
    6.1%, 7/3/95                         300,000          300
                                                     --------
PROFESSIONAL SERVICES (0.8%)
  PHH Corp., 5.96%, 7/18/95              800,000          798
                                                     --------
      Total Money Market Investments                    1,795
                                                     --------
      Total Investments                              $100,217
                                                     ========
</TABLE>
 
* Non-Income Producing
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       59
<PAGE>   63
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       AGGRESSIVE GROWTH STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
COMMON STOCK (92.1%)
AIRLINES (1.1%)
  *ValuJet Airlines                       147,500    $  4,849
                                                     --------
AUTO & TRUCKS (0.3%)
  *Dorsey Trailers, Inc.                  167,900       1,343
  PST Vans Inc.                            12,000          76
                                                     --------
      Total                                             1,419
                                                     --------
AUTO RELATED (4.0%)
  *Automotive Industries Holding          146,600       3,976
  *Custom Chrome Inc.                     180,800       3,616
  *O'Reilly Automotive, Inc.              144,800       4,072
  A.O. Smith Corp.                        106,200       2,496
  *Thompson PBE, Inc.                     208,700       3,443
                                                     --------
      Total                                            17,603
                                                     --------
BANKS (0.8%)
  *Leader Financial Corp.                 121,500       3,448
                                                     --------
CHEMICALS (1.2%)
  A. Schulman Inc.                        183,850       5,286
                                                     --------
CONSUMER PRODUCTS (1.8%)
  *Blythe Industries, Inc.                180,600       7,698
                                                     --------
DIVERSIFIED (0.4%)
  Worthington Industries, Inc.             84,000       1,717
                                                     --------
DRUGS (1.6%)
  Cardinal Health Inc.                    150,312       7,102
                                                     --------
ELECTRICAL EQUIPMENT (2.0%)
  *CIDCO Inc.                             136,200       4,273
  Methode Electronics Inc.                232,000       4,524
                                                     --------
      Total                                             8,797
                                                     --------
ELECTRONICS (7.4%)
  *ADC Telecommunication                  198,300       7,089
  *Altera Corporation                     160,600       6,946
  *Applied Materials Inc.                  59,400       5,145
  *Electroglas, Inc.                       68,500       3,922
  *In Focus Systems Inc.                  156,500       4,225
  Molex Inc.                              141,106       5,150
                                                     --------
      Total                                            32,477
                                                     --------
ENVIRONMENTAL CONTROL (1.3%)
  *TETRA Technologies Inc.                316,251       5,613
                                                     --------
FINANCIAL SERVICES (0.6%)
  Money Store, Inc.                        77,200       2,765
                                                     --------
FOOD SERVICE/LODGING (1.3%)
  *Hospitality Franchise Systems          167,500       5,800
                                                     --------
HOSPITAL SUPPLIES (14.7%)
  APPS Dental Inc.                         65,500       1,376
  *American Medical Response Inc.         167,800       4,698
  Columbia/HCA Healthcare Corp.           118,200       5,112
  *Gulf South Medical Supply, Inc.        280,000       6,720
  *Heart Technology                       178,500       3,458
  *Inbrand Corporation                    300,650       4,886
  *Medaphis Corporation                    50,000       1,088
  *MediSense Inc.                         252,000       4,883
  *Patterson Dental Company               226,250       5,373
  *Quorum Health Group, Inc.              216,300       4,380
  *Respironics Inc.                       265,800       3,788
  *Sybron, Inc.                           132,100       5,267
  *Technol Medical Products Inc.          196,900       4,332
  United Healthcare Corp.                  61,700       2,553
  *Ventritex, Inc.                        138,400       2,336
 
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
HOSPITAL SUPPLIES (CONTINUED)
  *Vivra Incorporated                     162,200    $  4,400
                                                     --------
      Total                                            64,650
                                                     --------
HOUSEHOLD FURNITURE (1.9%)
  *Department 56, Inc.                    152,200       5,822
  Juno Lighting Inc.                      167,200       2,675
                                                     --------
      Total                                             8,497
                                                     --------
INSURANCE (1.9%)
  Capital Guaranty Corporation            160,000       2,880
  PMI Group Inc.                          127,600       5,535
                                                     --------
      Total                                             8,415
                                                     --------
LEISURE RELATED (4.0%)
  *Broderbund Software Inc.                76,100       4,851
  The Marcus Corporation                   82,700       2,502
  *Scientific Games Holding Corp.         236,900       6,574
  *Station Casinos, Inc.                  217,300       3,748
                                                     --------
      Total                                            17,675
                                                     --------
OFFICE EQUIPMENT (7.3%)
  *Firefox Communications, Inc.            55,000       1,416
  *Norand Corporation                      90,700       3,696
  *Nu-Kote Holdings Inc.                  188,600       5,988
  *Peak Technologies                      225,800       6,209
  *Tivoli Systems Inc.                     42,000       1,336
  *Viking Office Products Inc.            175,200       6,417
  *Zebra Technologies                     131,700       7,013
                                                     --------
      Total                                            32,075
                                                     --------
OFFICE EQUIPMENT & SERVICES (12.4%)
  *American Management System Inc.        255,650       6,423
  Danka Business Systems                  194,900       4,714
  First Data Corporation                   69,400       3,947
  First Financial Management Corp.         69,800       5,968
  *Fiserv                                 175,875       4,946
  HBO & Co.                               100,000       5,450
  *Hyperion Software                      131,500       5,950
  Medic Computer Systems, Inc.             61,400       2,364
  *PeopleSoft, Inc.                        93,700       5,083
  *SPS Transaction Services, Inc.         176,700       6,118
  *TESSCO Technologies Inc.               190,700       3,456
                                                     --------
      Total                                            54,419
                                                     --------
OIL & GAS PROGRAMS (0.9%)
  Parker and Parsley Petroleum Co.        199,400       3,913
                                                     --------
OIL FIELD SERVICES (2.1%)
  *Offshore Logistics, Inc.               141,725       1,984
  Production Operators Corp.              144,300       4,545
  Tosco Corp.                              90,000       2,869
                                                     --------
      Total                                             9,398
                                                     --------
PAPER (0.8%)
  Wausau Paper Mills Company              159,655       3,642
                                                     --------
PROFESSIONAL SERVICES (6.1%)
  *CUC International Inc.                 152,900       6,422
  Cintas Corporation                      134,300       4,768
  *Interim Service                        116,100       2,903
  Kelly Services Incorporated             132,200       3,404
  Paychex Incorporated                    131,330       4,761
  *Robert Half International Inc.         156,600       4,013
                                                     --------
      Total                                            26,271
                                                     --------
RAILROADS (1.1%)
  *Wisconsin Central Transportation       102,400       5,018
                                                     --------
</TABLE>
 
                                       60
<PAGE>   64
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                       AGGRESSIVE GROWTH STOCK PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                         SHARES      (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
COMMON STOCK (CONTINUED)
RETAIL-APPAREL (1.5%)
  The Talbots, Inc.                       163,300    $  6,491
                                                     --------
RETAIL-GENERAL (4.9%)
  *Corporate Express, Inc.                203,400       4,348
  Fastenal Co.                            134,900       3,684
  Global Direct Mail Corp.                 46,000         909
  *Micro Warehouse Inc.                    72,900       3,353
  *Officemax, Inc.                        210,800       5,876
  *Tractor Supply Company                 171,200       3,296
                                                     --------
      Total                                            21,466
                                                     --------
TELECOMMUNICATIONS (5.5%)
  *AirTouch Communications                182,600       5,204
  *LCI International                      145,600       4,459
  LIN Television Corp.                     91,500       3,077
  *Tellabs Inc.                           155,400       7,479
  *Transaction Systems Architects          87,100       2,243
  *Uunet Technologies, Inc.                47,000       1,293
                                                     --------
      Total                                            23,755
                                                     --------
TRUCKING-SHIPPING (2.4%)
  *Fritz Companies, Inc.                  109,000       6,397
  *Heartland Express Incorporated         154,432       3,938
                                                     --------
      Total                                            10,335
                                                     --------
 
<CAPTION>
                                                      MARKET
                                        SHARES/       VALUE
                                          PAR        (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
UTILITY-ELECTRIC (0.8%)
  *Huaneng Power International, ADS       194,000    $  3,565
                                                     --------
      Total Common Stock                              404,159
                                                     --------
MONEY MARKET INVESTMENTS (7.9%)
FINANCIAL SERVICES (4.0%)
  Weyerhaeuser Mortgage Company,
    5.93%, 7/10/95                     $9,000,000    $  8,986
  Weyerhaeuser Mortgage Company,
    5.96%, 7/20/95                      8,700,000       8,673
                                                     --------
      Total                                            17,659
                                                     --------
FOODS (0.2%)
  Cargill Incorporated,
    6.1%, 7/3/95                          700,000         700
                                                     --------
SOAPS & TOILETRIES (1.5%)
  Colgate-Palmolive Co.,
    5.92%, 8/7/95                       6,500,000       6,460
                                                     --------
TOBACCO (2.2%)
  Philip Morris Companies, Inc.,
    5.94%, 7/14/95                      9,800,000       9,779
                                                     --------
      Total Money Market Investments                   34,598
                                                     --------
      Total Investments                              $438,757
                                                     ========
</TABLE>
 
* Non-Income Producing
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       61
<PAGE>   65
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                         INTERNATIONAL EQUITY PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                         MARKET
                                                         VALUE
                                COUNTRY     SHARES      (000'S)
                                -------   -----------   --------
<S>                             <C>       <C>           <C>
COMMON STOCKS (87.8%)
AEROSPACE (1.1%)
  British Aerospace              U.K.         374,197   $  3,352
                                                        --------
APPLIANCES & HOUSEHOLD DURABLES (1.1%)
  Sony Corporation               Jpn.          71,000      3,409
                                                        --------
AUTOMOBILES (2.1%)
  Renault SA                     Fr.           65,000      2,037
  Volvo Aktieboleget B Free      Swe.         240,000      4,565
                                                        --------
      Total                                                6,602
                                                        --------
BANKING & CREDIT (15.1%)
  Argentina Corp. Bancaris De
    Espana, ADR                  Sp.          195,000      3,583
  Australia & New Zealand Bank
    Group                       Austrl.       926,097      3,291
  Banco De Andulucia             Sp.           30,000      3,893
  #++Banque National De Paris,
    ADR                          Fr.           92,000      4,438
  Barclay's Bank, PLC            U.K.         311,016      3,343
  BCO Bilboa Vizcaya             Sp.          162,500      4,691
  BCO Portiques De Invest        Port.         71,350      1,247
  Canadian Imperial Bank of
    Commerce                     Can.         177,000      4,253
  Deutsche Bank of Commerce      Ger.          88,000      4,276
  HSBC Holdings                  H.K.         275,365      3,532
  National Bank of Canada
    Montreal                     Can.         360,000      2,949
  Panin Bank                     Idr.         725,000        690
  Stadshypotek AB "A"            Swe.         120,000      1,780
  Svenska Hanelsbanken S A       Swe.         372,000      5,543
  TSB Group, PLC                 U.K.          46,500        179
                                                        --------
      Total                                               47,688
                                                        --------
BROADCAST ADVERTISING (0.5%)
  Vereniging Nederland           Neth.         13,200      1,581
                                                        --------
BUILDING MATERIALS AND COMPONENTS (1.3%)
  Pioneer International Ltd.    Austrl.     1,700,000      4,229
                                                        --------
BUSINESS & PUBLIC SERVICE (4.0%)
  Esstelte AB Series A           Swe.         244,900      3,061
  SGS Holdings                   Swtz.          2,770      4,811
  Welsh Water PLC                U.K.         446,000      4,715
                                                        --------
      Total                                               12,587
                                                        --------
CHEMICALS (4.3%)
  Bayer AG                       Ger.          16,700      4,154
  European Vinyls Corp. EVC
    International                Neth.         36,525      1,703
  Rhone Poulenc SA Series A      Fr.          165,000      3,718
  Solvay Et Cie A NPV            Bel.           7,300      4,004
                                                        --------
      Total                                               13,579
                                                        --------
ELECTRICAL & ELECTRONICS (3.0%)
  BBXC Brown Boveri Series A     Swtz.          4,730      4,896
  Hitachi Ltd.                   Jpn.         450,000      4,487
                                                        --------
      Total                                                9,383
                                                        --------
ENERGY SOURCES (3.7%)
  Repsol SA                      Sp.          122,000      3,839
  Sega Petrolium Series "A"      Nor.         260,000      3,692
 
<CAPTION>
                                                         MARKET
                                                         VALUE
                                COUNTRY     SHARES      (000'S)
                                -------   -----------   --------
<S>                             <C>       <C>           <C>
ENERGY SOURCES (CONTINUED)
  Societe Nationale Elf
    Aquitaine                    Fr.           53,928   $  3,985
                                                        --------
      Total                                               11,516
                                                        --------
FINANCIAL SERVICES (2.7%)
  Capital Portugal Fund          Port.         16,000      1,564
  India Fund Series "B"          U.K.       1,256,515      2,369
  JF Indonesia Fund Inc.         H.K.         456,600        584
  Korea International Trust      Kor.              52      2,626
  Thailand Int'l. Fund           T.H.              45      1,474
                                                        --------
      Total                                                8,617
                                                        --------
FOOD & HOUSEHOLD PRODUCTS (3.5%)
  Albert Fisher Group            U.K.       4,884,524      3,575
  Cafe De Coral Holdings, Ltd.   H.K.       4,301,000      1,073
  Hillsdown Holdings             U.K.       1,511,206      4,352
  Vitro SA NPV                   Mex.         668,400      1,903
                                                        --------
      Total                                               10,903
                                                        --------
FOREST PRODUCTS & PAPER (4.3%)
  Barito Pacific Timber          I.D.         937,000      1,346
  Carter Holt Harvey Ltd.        N.Z.       1,995,957      4,884
  Metsa-Serla OY "B"             Fin.          55,500      2,471
  Stora Tora Kopparberg Bergst
    B Free                       Swed.        350,000      4,735
                                                        --------
      Total                                               13,436
                                                        --------
HEALTH & PERSONAL CARE (2.5%)
  Astra AB Series A Free         Swed.        157,000      4,841
  Hafslund Nycomed "A"           Norw.        127,500      2,990
                                                        --------
      Total                                                7,831
                                                        --------
INSURANCE (5.7%)
  Aegon NV                       Neth.        143,337      4,960
  Int'l Nederlanden Group        Neth.         91,000      5,035
  London Insurance Group         Can.         152,000      2,836
  Swiss Reinsurance Group        Swtz.          4,000      5,026
                                                        --------
      Total                                               17,857
                                                        --------
MACHINERY & ENGINEERING (1.2%)
  #+VA Technologies AG Bearer    Aus.          30,000      3,760
                                                        --------
MERCHANDISING (3.1%)
  Burton Group                   U.K.       1,500,000      1,981
  Kon Bijenkorf Beheer           Neth.         44,904      3,224
  Kwik Save Group                U.K.         455,000      4,670
                                                        --------
      Total                                                9,875
                                                        --------
METALS & MINING (2.5%)
  Elkem A S Oslo ord A Free      Nor.         192,000      2,679
  *Inmet Mining Ltd.             Can.         192,500      1,384
  Pechiney Cert. D'Invest        Fr.            9,000        519
  *Union Miniere, NPV            Bel.          50,500      3,294
                                                        --------
      Total                                                7,876
                                                        --------
MULTI-INDUSTRY (6.0%)
  Amer Group "A"                 Fin.         175,000      3,186
  BTR Nylex Ltd.                 Aus.       1,200,000      2,294
  Hutchinson Whampoa             H.K.         798,000      3,867
  Jardine Matheson Holdings      H.K.         382,763      2,813
  Jardine Strategic Holdings     H.K.       2,815,000      3,026
  Swire Pacific Class "A"        H.K.         472,500      3,603
</TABLE>
 
                                       62
<PAGE>   66
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                         INTERNATIONAL EQUITY PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                         MARKET
                                                         VALUE
                                COUNTRY     SHARES      (000'S)
                                -------   -----------   --------
<S>                             <C>       <C>           <C>
COMMON STOCKS (CONTINUED)
MULTI-INDUSTRY (CONTINUED)
  Waste Management PLC. ADR.     U.K.          21,400   $    203
                                                        --------
      Total                                               18,992
                                                        --------
TELECOMMUNICATIONS (7.5%)
  Alcatel Alstrohm DG            Fr.           32,250      2,904
  CIA De Telefonos Chile SA
    ADR                          Chil.         36,500      2,970
  Nacional Financiera CNV        Mx.           92,100      2,855
  Phillipine Long Distance
    Telephone                    Phil.         53,500      3,838
  Stet Di Risp Non-Conv.         Italy      2,065,000      4,592
  Telebras ADR                   Braz.         77,500      2,616
  Telphonica De Espana           Sp.          304,000      3,917
                                                        --------
      Total                                               23,692
                                                        --------
TRANSPORTATION (0.6%)
  Singapore Airlines Ltd. Fgn.   Sing.        205,000      1,892
                                                        --------
TRANSPORTATION-RAILROAD (0.5%)
  Brambles Ind. Ltd.             Aus.         175,000      1,659
                                                        --------
UTILITIES-ELECTRIC (10.3%)
  British Gas                    U.K.         987,000      4,546
  *CEZ Ceske Energeticke
    Zavody                       Chez.         45,760      1,664
  Electricidad De Caracas        Venz.      2,527,258      2,640
  Endesa National De Electric    Sp.           69,000      3,408
  Evn Energieversorgung          Aus.          26,000      3,639
  Hong Kong Electric             H.K.         990,000      3,365
  Iberdrola SA                   Spn.         667,500      5,028
  South Wales Electricity        U.K.         330,000      3,659
 
<CAPTION>
                                                         MARKET
                                            SHARES/      VALUE
                                COUNTY        PAR       (000'S)
                                -------   -----------   --------
<S>                             <C>       <C>           <C>
UTILITIES-ELECTRIC (CONTINUED)
  Veba AG                        Ger.          12,000   $  4,716
                                                        --------
      Total                                               32,665
                                                        --------
WHOLESALE & INTERNATIONAL TRADE (1.2%)
  Brierley Investments Ltd.      N.Z.       5,041,091      3,808
                                                        --------
      Total Common Stock Investments                     276,789
                                                        --------
BONDS (1.3%)
FINANCIAL SERVICES (0.5%)
  PIV Financial Inv. Cayman      C.J.     $ 2,000,000   $  1,610
                                                        --------
TELECOMMUNICATIONS (0.8%)
  Comp De Inever Telecom         K.S.          47,000      2,350
                                                        --------
      Total Bond Investments                               3,960
                                                        --------
MONEY MARKET INVESTMENTS (10.9%)
FINANCIAL SERVICES (2.5%)
  American Express, 5.5%,
    7/3/95                       U.S.     $ 7,963,000   $  7,963
                                                        --------
FEDERAL GOVERNMENT & AGENCIES (0.9%)
  U.S. Treasury Notes, 8.875%,
    2/15/96                      U.S.       2,850,000      2,902
                                                        --------
INSURANCE (5.0%)
  Prudential, 6.5%, 7/3/95       U.S.      15,786,000     15,786
                                                        --------
UTILITIES-ELECTRIC (2.5%)
  General Electric Credit
    Corp., 5%, 7/3/95            U.S.       7,964,000      7,964
                                                        --------
      Total Money Market Investments                      34,615
                                                        --------
      Total Investments                                 $315,364
                                                        ========
</TABLE>
 
 * Non-Income Producing
 
 + Unregistered security, originally purchased May 31, 1994, total cost
   $2,738,708.
 
++ Unregistered security, originally purchased November 16, 1993, total cost
   $4,339,196.
 
 # The Portfolio has no right to require registration of unregistered
   securities.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       63
<PAGE>   67
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             SELECT BOND PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                          PAR        (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
BONDS (84.7%)
AIRLINES (1.4%)
  Delta Air Lines, Inc., 9 3/4%,
    5/26/03                            $  546,000    $    607
  Delta Air Lines, Inc., 9 3/4%,
    6/1/03                              1,605,000       1,786
                                                     --------
      Total                                             2,393
                                                     --------
AUTO RELATED (0.6%)
  Hertz Corp., 9.04%, 6/14/00             900,000         989
                                                     --------
AUTOS & TRUCKS (0.8%)
  General Motors Corporation, 8.8%,
    3/1/21                              1,250,000       1,424
                                                     --------
BANKS (1.1%)
  Natwest Capital Corporation,
    12 1/8%, 11/15/02                   1,700,000       1,907
                                                     --------
BEVERAGES (3.1%)
  Coca-Cola Enterprises Inc., 8%,
    1/4/05                              5,000,000       5,522
                                                     --------
CHEMICALS (1.2%)
  Dow Capital B.V., 8 1/2%, 6/8/10      1,800,000       2,097
                                                     --------
CMO & LOAN-BACKED CERTIFICATES (17.2%)
  CIT RV Owner Trust, 6 1/4%,
    1/15/11                             2,500,000       2,489
  Federal Home Loan Mortgage Corp.,
    7 1/4%, 4/15/18                     2,425,000       2,447
  Federal Home Loan Mortgage Corp.,
    7%, 3/15/07                         1,875,000       1,877
  Federal Home Loan Mortgage Corp.,
    6%, 7/15/07                         3,900,000       3,737
  Federal National Mortgage Assoc.,
    6 1/4%, 7/25/07                     3,850,000       3,772
  Federal National Mortgage Assoc.,
    6 3/4%, 12/25/23                    3,500,000       3,254
  Ford Motor Credit Grantor Trust,
    7.3%, 10/15/99                      2,418,742       2,457
  Premier Auto Trust, 6.65%, 4/2/98     3,300,000       3,327
  Rural Housing Trust, 6.33%, 4/1/26    2,867,611       2,781
  Security Capital Industrial Trust,
    7.3%, 5/15/01                       2,000,000       2,018
  World Omni Grantor Trust, 7.95%,
    1/25/01                             2,000,000       2,049
                                                     --------
      Total                                            30,208
                                                     --------
DIVERSIFIED (0.8%)
  Tenneco Inc., 10%, 8/1/98             1,250,000       1,371
                                                     --------
FEDERAL GOVERNMENT AND AGENCIES (26.4%)
  Federal National Mortgage Assoc.,
    7%, 12/1/23                         5,654,245       5,567
  Government National Mortgage
    Assoc., 8 1/2%, 3/15/23                13,904          14
  Government National Mortgage
    Assoc., 7%, 5/15/23                   540,230         532
  Government National Mortgage
    Assoc., 7 1/2%, 2/15/24             2,009,678       2,020
  Government National Mortgage
    Assoc., 7%, 5/15/23                 3,267,710       3,218
  Government National Mortgage
    Assoc., 8 1/2%, 9/15/24               572,395         594
 
<CAPTION>
                                                      MARKET
                                                      VALUE
                                          PAR        (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
FEDERAL GOVERNMENT AND AGENCIES (CONTINUED)
  Government National Mortgage
    Assoc., 8 1/2%, 6/15/23            $  402,564    $    418
  Government National Mortgage
    Assoc., 8 1/2%, 7/15/24               149,840         156
  Government National Mortgage
    Assoc., 8 1/2%, 2/15/25               232,103         241
  Government National Mortgage
    Assoc., 7 1/2%, 1/15/24               971,557         976
  Government National Mortgage
    Assoc., 7 1/2%, 1/15/24             1,028,639       1,034
  Government National Mortgage
    Assoc., 8 1/2%, 11/15/24              373,464         388
  Government National Mortgage
    Assoc., 8 1/2%, 11/15/24              395,233         410
  Government National Mortgage
    Assoc., 8 1/2%, 8/15/24               459,250         477
  Government National Mortgage
    Assoc., 8 1/2%, 8/15/24               360,244         374
  Government National Mortgage
    Assoc., 7 1/2%, 6/15/24             1,780,173       1,789
  Government National Mortgage
    Assoc., 8 1/2%, 2/15/25               178,825         186
  Government National Mortgage
    Assoc., 8 1/2%, 9/15/24               389,156         404
  Government National Mortgage
    Assoc., 8 1/2%, 11/15/24              371,864         386
  Government National Mortgage
    Assoc., 8 1/2%, 4/15/21               330,833         343
  Government National Mortgage
    Assoc., 8 1/2%, 9/15/21               274,239         285
  Government National Mortgage
    Assoc., 8 1/2%, 3/15/22               350,448         364
  Government National Mortgage
    Assoc., 7%, 6/15/23                 2,932,682       2,888
  U.S. Treasury, 7 1/8%, 2/15/23        8,200,000       8,656
  U.S. Treasury, 6 1/2%, 8/15/23       11,550,000      10,922
  U.S. Treasury, 7 1/2%, 11/15/24       1,500,000       1,661
  U.S. Treasury, 7 1/8%, 2/15/25        2,000,000       2,256
                                                     --------
      Total                                            46,559
                                                     --------
FINANCE COMPANIES (5.6%)
  Associates Corp. of North America,
    6 7/8%, 1/15/97                     2,200,000       2,221
  Associates Corp. of North America,
    5 1/4%, 9/1/98                      2,000,000       1,940
  Avco Financial Services Inc.,
    5 7/8%, 10/15/97                    2,200,000       2,184
  Beneficial Corp., 6.86%, 11/19/97     2,200,000       2,226
  Ford Motor Credit Company, 6 1/4%,
    2/26/98                             1,200,000       1,198
                                                     --------
      Total                                             9,769
                                                     --------
FOODS (2.1%)
  Nabisco Inc., 8%, 1/15/00             1,500,000       1,577
  RJR Nabisco Inc., 8 5/8%, 12/1/02     2,000,000       2,102
                                                     --------
      Total                                             3,679
                                                     --------
FOREIGN GOVERNMENT BONDS (1.2%)
  Province of Manitoba, 7 3/4%,
    7/17/16                             2,000,000       2,102
                                                     --------
</TABLE>
 
                                       64
<PAGE>   68
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             SELECT BOND PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                      VALUE
                                          PAR        (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
BONDS (CONTINUED)
LEISURE RELATED (1.3%)
  Time Warner Entertainment Inc.,
    8 7/8%, 10/1/12                    $2,000,000    $  2,130
  Time Warner Entertainment Inc.,
    7 1/4%, 9/1/08                        200,000         191
                                                     --------
      Total                                             2,321
                                                     --------
MEDIA (2.2%)
  Tele-Communications, Inc., 7 3/8%,
    2/15/00                             2,000,000       2,010
  Tele-Communications, Inc., 7 7/8%,
    8/1/13                              2,000,000       1,850
                                                     --------
      Total                                             3,860
                                                     --------
OFFICE EQUIPMENT (1.7%)
  International Business Machines
    Corp., 6 3/8%, 11/1/97              3,000,000       3,014
                                                     --------
PRINTING & PUBLISHING (2.0%)
  News America Holdings Inc.,
    7 1/2%, 3/1/00                      3,500,000       3,571
                                                     --------
TOBACCO (1.7%)
  Philip Morris Companies, Inc., 9%,
    5/15/98                             1,750,000       1,864
  Philip Morris Companies, Inc.,
    9 1/4%, 2/15/00                     1,000,000       1,103
                                                     --------
      Total                                             2,967
                                                     --------
UTILITY-ELECTRIC (14.3%)
  Detroit Edison Company, 5.41%,
    5/1/97                              4,000,000       3,935
  Long Island Lighting Co., 7%,
    3/1/04                              3,250,000       2,900
  Pacific Gas & Electric Co.,
    7 1/4%, 3/1/26                      3,500,000       3,347
  Pacific Gas & Electric Co.,
    5 3/8%, 8/1/98                      2,600,000       2,522
  Pennsylvania Power & Light Co.,
    5 1/2%, 4/1/98                      3,000,000       2,927
  PECO Energy Company, 7 1/2%,
    1/15/99                             1,500,000       1,539
 
<CAPTION>
                                                      MARKET
                                                      VALUE
                                          PAR        (000'S)
                                       ----------    --------
<S>                                    <C>           <C>
UTILITY-ELECTRIC (CONTINUED)
  PECO Energy Company, 7 3/4%,
    3/1/23                             $1,150,000    $  1,143
  Public Service Electric & Gas Co.,
    6 7/8%, 1/1/03                      2,250,000       2,259
  Texas Utilities Electric Co.,
    7 7/8%, 3/1/23                      2,250,000       2,265
  UNICOM Corp., 6 1/2%, 4/15/00         2,300,000       2,279
                                                     --------
      Total                                            25,116
                                                     --------
      Total Bonds                                     148,869
                                                     --------
MONEY MARKET INVESTMENTS (15.3%)
CHEMICALS (1.1%)
  W.R. Grace & Co., 6 1/2%, 12/1/95    $2,000,000    $  2,002
                                                     --------
FINANCIAL SERVICES (8.6%)
  American Express Company, 5.97%,
    7/26/95                             5,000,000       4,979
  American General Finance Corp.,
    8 7/8%, 3/15/96                     2,300,000       2,343
  American Telephone & Telegraph
    Co., 5.92%, 7/14/95                 5,000,000       4,989
  Transamerica Financial Corp.,
    8.55%, 6/15/96                      2,500,000       2,542
                                                     --------
      Total                                            14,853
                                                     --------
FOODS (1.7%)
  Cargill Incorporated, 6.1%, 7/3/95    3,100,000       3,099
                                                     --------
SOAPS & TOILETRIES (3.4%)
  Colgate-Palmolive Co., 5.89%,
    7/11/95                             6,000,000       5,990
                                                     --------
TELECOMMUNICATIONS (0.5%)
  U S West Capital Funding Inc.,
    8.99%, 11/14/95                       900,000         910
                                                     --------
      Total Money Market Investments                   26,854
                                                     --------
      Total Investments                              $175,723
                                                     ========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       65
<PAGE>   69
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           HIGH YIELD BOND PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                       VALUE
                                           PAR        (000'S)
                                        ----------    -------
<S>                                     <C>           <C>
BONDS (96.3%)
APPAREL, TEXTILES (5.9%)
  Fieldcrest Cannon, Inc., 11 1/4%,
    6/15/04                             $  500,000    $   524
  Guess, Inc., 9 1/2%, 8/15/03             500,000        500
  Ithaca Industries, 11 1/8%,
    12/15/02                               700,000        667
  Tultex Corp., 10 5/8, 3/15/05          1,000,000      1,006
                                                      -------
      Total                                             2,697
                                                      -------
AUTO RELATED (4.4%)
  Exide Corporation, 10%, 4/15/05          500,000        514
  Foamex L.P., 11 1/4, 10/1/02           1,000,000        985
  JPS Automotive Products, 11 1/8,
    6/15/01                                500,000        489
                                                      -------
      Total                                             1,988
                                                      -------
BANKS (2.4%)
  First Nationwide Holdings, 12 1/4%,
    5/15/01                              1,000,000      1,070
                                                      -------
BUILDING & CONSTRUCTION (2.3%)
  Primeco Inc., 12 3/4%, 3/1/05          1,000,000      1,020
                                                      -------
CABLE (2.2%)
  Adelphia Communications, 9 7/8%,
    3/1/05                                 500,000        440
  Groupe Videotron Ltd., 10 5/8%,
    2/15/05                                500,000        528
                                                      -------
      Total                                               968
                                                      -------
CHEMICALS (1.1%)
  Terra Industries, 10 1/2%, 6/15/05       500,000        505
                                                      -------
CONTAINERS (1.1%)
  Anchor Glass Container Corp.,
    10 1/4%, 6/30/02                       500,000        500
                                                      -------
DRUGS (1.2%)
  Thrifty Payless Holdings, 11 3/4%,
    4/15/03                                500,000        530
                                                      -------
ENVIRONMENTAL CONTROL (1.9%)
  Envirotest Systems Corporation,
    9 1/8%, 3/15/01                      1,000,000        837
                                                      -------
FOODS (4.9%)
  Beatrice Foods, Inc., 12%, 12/1/01       800,000        754
  Curtice-Burns Foods Inc., 12 1/4%,
    2/1/05                                 500,000        531
  Flagstar Corp., 10 3/4%, 9/15/01       1,000,000        935
                                                      -------
      Total                                             2,220
                                                      -------
GAMING (9.5%)
  Aztar Corp., 13 3/4%, 10/1/04            500,000        564
  Bally's Grand, 10 3/8%, 12/15/03       1,000,000        980
  Bally Park Place Funding, 9 1/4%,
    3/15/04                                500,000        472
  GNF Corp., 10 5/8%, 4/1/03             1,000,000        842
  Showboat, Inc., 9 1/4%, 5/1/08           500,000        458
  Trump Hotels & Casino Resort,
    15 1/2%, 6/15/05                       500,000        486
  Trump Plaza Funding, 10 7/8%,
    06/15/01                               500,000        460
                                                      -------
      Total                                             4,262
                                                      -------
 
<CAPTION>
                                                      MARKET
                                                       VALUE
                                           PAR        (000'S)
                                        ----------    -------
<S>                                     <C>           <C>
HEALTHCARE (1.2%)
  Charter Medical Corporation,
    11 1/4%, 4/15/04                    $  500,000    $   531
                                                      -------
HOME CONSTRUCTION (5.5%)
  Kaufman & Broad Home Corp., 9 3/8%,
    5/1/03                               1,000,000        954
  Toll Corporation, 10 1/2%, 3/15/02     1,000,000      1,030
  US Home Corporation, 9 3/4%,
    6/15/03                                500,000        485
                                                      -------
      Total                                             2,469
                                                      -------
INSURANCE (2.2%)
  Reliance Group Holdings,
    9 3/4%, 11/15/03                     1,000,000        973
                                                      -------
LEISURE RELATED (0.9%)
  Kloster Cruise, 13%, 5/1/03              500,000        385
                                                      -------
LODGING/RESORTS (2.2%)
  HMH Properties Inc., 9 1/2%,
    5/15/05                              1,000,000        969
                                                      -------
MISCELLANEOUS BASIC MATERIALS (1.1%)
  Tolmex S.A. De C.V., 8 3/8%,
    11/1/03                                750,000        510
                                                      -------
MOVIE THEATERS (3.4%)
  Cinemark USA, 12%, 6/1/02                750,000        804
  Plitt Theatres, 10 7/8%, 6/15/04         750,000        739
                                                      -------
      Total                                             1,543
                                                      -------
OFFICE EQUIPMENT (2.2%)
  United Stationer Supply Co.,
    12 3/4%, 5/1/05                      1,000,000      1,010
                                                      -------
OIL & GAS-INDEPENDENT (4.3%)
  Bridas Corporation, 12 1/2%,
    11/15/99                             1,000,000        895
  Transtexas Gas, 11 1/2%, 6/15/02       1,000,000      1,018
                                                      -------
      Total                                             1,913
                                                      -------
PAPER (7.9%)
  Indah Kiat International Finance,
    12 1/2%, 6/15/06                     1,000,000      1,010
  Rainy River Forest Products,
    10 3/4%, 10/15/01                      500,000        521
  Repap Wisconsin Incorporated,
    9 1/4%, 2/1/02                         500,000        483
  Repap New Brunswick, 10 5/8%,
    4/15/05                              1,000,000      1,008
  #+SD Warren Co., 12%, 12/15/04           500,000        538
                                                      -------
      Total                                             3,560
                                                      -------
PRINTING & PUBLISHING (2.6%)
  American Media Operation, 11 5/8%,
    11/15/04                               500,000        535
  U.S. Banknote Corporation, 10 3/8%,
    6/1/02                                 800,000        648
                                                      -------
      Total                                             1,183
                                                      -------
REFINING (0.7%)
  PDV America Inc., 7 7/8%, 8/1/03         345,000        313
                                                      -------
RETAIL-FOOD (10.4%)
  Dominick's Finer Foods, 10 7/8%,
    5/1/05                               1,000,000      1,012
  Pathmark Stores, 11 5/8%, 6/15/02        750,000        787
  Penn Traffic Company, 9 5/8%,
    4/15/05                              1,000,000        942
</TABLE>
 
                                       66
<PAGE>   70
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                           HIGH YIELD BOND PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                      MARKET
                                                       VALUE
                                           PAR        (000'S)
                                        ----------    -------
<S>                                     <C>           <C>
BONDS (CONTINUED)
RETAIL-FOOD (CONTINUED)
  Pueblo Xtra International, 9 1/2%,
    8/1/03                              $1,000,000    $   912
  Ralphs Grocery Company, 11%,
    6/15/05                              1,000,000      1,010
                                                      -------
      Total                                             4,663
                                                      -------
SOAPS & TOILETRIES (1.1%)
  Coty Inc., 10 1/4%, 5/1/05               500,000        507
                                                      -------
STEEL (5.5%)
  UCAR Global Enterprises, 12%,
    1/15/05                              1,000,000      1,070
  WCI Steel, Inc., 10 1/2%, 3/1/02         500,000        485
  Wheeling-Pittsburgh Corporation,
    9 3/8%, 11/15/03                     1,000,000        925
                                                      -------
      Total                                             2,480
                                                      -------
TELECOMMUNICATIONS (2.3%)
  Rogers Cantel Mobile Inc., 11 1/8%,
    7/15/02                                500,000        516
  Rogers Communication Inc., 10 7/8%,
    4/15/04                                500,000        513
                                                      -------
      Total                                             1,029
                                                      -------
TRUCKING-SHIPPING (1.2%)
  Gearbulk Holding Ltd., 11 1/4%,
    12/1/04                                500,000        530
                                                      -------
 
<CAPTION>
                                                      MARKET
                                           PAR/        VALUE
                                          SHARES      (000'S)
                                        ----------    -------
<S>                                     <C>           <C>
UTILITY-GAS (4.7%)
  AmeriGas Partner, 10 1/8%, 4/15/07    $1,000,000    $ 1,050
  Petroleum Heat & Power, 12 1/4%,
    2/1/05                               1,000,000      1,070
                                                      -------
      Total                                             2,120
                                                      -------
      Total Bonds                                      43,285
                                                      -------
COMMON STOCK WARRANTS (0.3%)
PAPER (0.3%)
  #++SDW Holdings Corporation               20,000    $   120
                                                      -------
      Total Common Stock Warrants                         120
                                                      -------
PREFERRED STOCK (1.2%)
PAPER (1.2%)
  SD Warren Co.                             20,000    $   560
                                                      -------
      Total Preferred Stock                               560
                                                      -------
MONEY MARKET INVESTMENTS (2.2%)
FINANCIAL SERVICES (1.8%)
  Xerox Credit Corporation, 5.86%,
    7/17/95                             $  800,000    $   798
                                                      -------
PROFESSIONAL SERVICES (0.4%)
  PHH Corp., 5.96%, 7/18/95                200,000        199
                                                      -------
      Total Money Market Investments                      997
                                                      -------
      Total Investments                               $44,962
                                                      =======
</TABLE>
 
 + Unregistered security, purchased December 13, 1994, cost $500,000.
 
++ Unregistered security, acquired May 23, 1995.
 
 # The Portfolio has no right to require registration of unregistered
   securities.
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       67
<PAGE>   71
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                             MONEY MARKET PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                                     VALUE
                                         PAR        (000'S)
                                      ----------    --------
<S>                                   <C>           <C>
COMMERCIAL PAPER (87.9%)
BEVERAGES (7.7%)
  Anheuser-Busch Companies, Inc.,
    5.93%, 7/5/95                     $4,000,000    $  3,997
  Pepsico Inc., 5.93%, 7/14/95         4,500,000       4,490
                                                    --------
      Total                                            8,487
                                                    --------
CHEMICALS (4.5%)
  E.I. Du Pont De Nemours & Co.,
    5.89%, 7/21/95                     5,000,000       4,984
                                                    --------
DRUGS (4.8%)
  Smithkline Beecham Corp., 5.87%,
    7/14/95                            5,300,000       5,289
                                                    --------
ELECTRICAL EQUIPMENT (4.8%)
  Emerson Electric Co., 5.93%,
    7/28/95                            5,300,000       5,276
                                                    --------
ELECTRONICS RELATED (4.8%)
  General Electric Capital Corp.,
    5.885%, 7/19/95                    5,300,000       5,284
                                                    --------
FINANCE COMPANIES (8.7%)
  American Express Company, 5.86%,
    7/14/95                            5,000,000       4,989
  Ford Motor Credit Company, 5.95%,
    7/11/95                            4,600,000       4,592
                                                    --------
      Total                                            9,581
                                                    --------
FINANCIAL SERVICES (14.5%)
  IBM Credit Corporation, 5.87%,
    7/5/95                             5,300,000       5,297
  Transamerica Financial Corp.,
    5.9%, 7/5/95                       5,300,000       5,297
  Weyerhaeuser Mortgage Company,
    5.96%, 7/24/95                     5,300,000       5,280
                                                    --------
      Total                                           15,874
                                                    --------
FOODS (6.1%)
  Cargill Incorporated, 6.1%, 7/3/95   1,400,000       1,399
  H.J. Heinz Company, 5.91%, 7/25/95   5,300,000       5,279
                                                    --------
      Total                                            6,678
                                                    --------
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                         PAR        (000'S)
                                      ----------    --------
<S>                                   <C>           <C>
OFFICE EQUIPMENT (4.5%)
  Xerox Corporation, 5.9%, 8/18/95    $5,000,000    $  4,961
                                                    --------
PRINTING & PUBLISHING (9.1%)
  Dow Jones & Company, Inc., 5.93%,
    7/20/95                            5,000,000       4,984
  Knight-Ridder Inc., 5.95%, 7/21/95   5,000,000       4,983
                                                    --------
      Total                                            9,967
                                                    --------
SOAPS & TOILETRIES (4.8%)
  Colgate-Palmolive Co., 5.93%,
    7/6/95                             5,300,000       5,296
                                                    --------
TOBACCO (4.8%)
  Philip Morris Companies, Inc.,
    5.93%, 7/28/95                     5,300,000       5,276
                                                    --------
UTILITY-ELECTRIC (4.1%)
  National Rural Utility Finance
    Corp., 5.91%, 7/5/95               4,500,000       4,497
                                                    --------
UTILITY-TELEPHONE (4.7%)
  American Telephone & Telegraph,
    5.92%, 8/7/95                      5,200,000       5,168
                                                    --------
      Total Commercial Paper                          96,618
                                                    --------
ASSET-BACKED SECURITIES (7.3%)
AUTO RELATED (7.3%)
  Banc One Auto Trust, 6.3625%,
    4/15/96                           $3,459,793    $  3,463
  Carco Auto Loan Master Trust,
    6.135%, 10/15/00
    (Variable rate; puttable; coupon
    indexed to one month
    Commercial Paper rate plus 7.5
    basis points; reset monthly)       4,550,000       4,550
                                                    --------
      Total                                            8,013
                                                    --------
      Total Asset-Backed Securities                    8,013
                                                    --------
CORPORATE-BACKED SECURITIES (4.8%)
PROFESSIONAL SERVICES (4.8%)
  PHH Corp., 5.5%, 10/30/95
    (Variable rate; coupon indexed
    to six month U.S. Treasury Bill
    less 3 basis points; reset
    weekly)                           $5,235,000    $  5,228
                                                    --------
      Total Corporate-Backed Securities                5,228
                                                    --------
      Total Investments                             $109,859
                                                    ========
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       68
<PAGE>   72
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
COMMON STOCK (48.6%)
AEROSPACE (1.1%)
  The Boeing Company                     79,000    $    4,947
  EG&G, Inc.                             12,300           206
  General Dynamics Corporation           14,600           648
  Lockheed Martin Corporation            46,161         2,914
  Loral Corporation                      19,600         1,014
  McDonnell Douglas Corporation          26,400         2,026
  Northrop Corporation                   11,400           594
  Raytheon Company                       28,500         2,212
  Rockwell International
    Corporation                          50,100         2,292
  TRW Inc.                               15,100         1,206
  United Technologies Corp.              28,500         2,227
                                                   ----------
      Total                                            20,286
                                                   ----------
AIRLINES (0.2%)
  *AMR Corporation                       17,600         1,313
  Delta Air Lines, Inc.                  11,700           863
  Southwest Airlines Co.                 33,200           793
  *USAir Group, Inc.                     13,600           158
                                                   ----------
      Total                                             3,127
                                                   ----------
APPAREL, TEXTILES AND FOOTWEAR (0.2%)
  Brown Group, Inc.                       4,100            93
  *Fruit Of The Loom Incorporated        17,500           370
  Liz Claiborne, Inc.                    17,300           368
  Nike, Inc.                             16,700         1,403
  Reebok International Ltd.              18,500           629
  Russell Corp.                           9,000           259
  Springs Industries, Inc.                4,700           175
  Stride Rite Corp.                      11,500           119
  VF Corporation                         14,700           790
                                                   ----------
      Total                                             4,206
                                                   ----------
AUTO & TRUCKS (1.1%)
  Chrysler Corporation                   85,400         4,089
  Ford Motor Company                    237,500         7,066
  General Motors Corporation            172,900         8,105
  *Navistar International Corp.          17,270           261
  PACCAR Incorporated                     8,995           421
                                                   ----------
      Total                                            19,942
                                                   ----------
AUTO RELATED (0.3%)
  Cooper Tire & Rubber Company           19,300           470
  Dana Corporation                       23,400           670
  Eaton Corporation                      18,000         1,046
  Echlin Inc.                            13,800           480
  Genuine Parts Company                  28,350         1,074
  Goodyear Tire & Rubber Company         35,100         1,448
  SPX Corp.                               2,900            33
  Snap-On Incorporated                    9,300           360
                                                   ----------
      Total                                             5,581
                                                   ----------
BANKS (2.8%)
  Banc One Corporation                   91,282         2,944
  Bank of Boston Corporation             25,700           964
  Bank of New York Company Inc.          44,200         1,785
  BankAmerica Corporation                86,600         4,557
  Bankers Trust New York Corp.           18,100         1,122
  Barnett Banks Inc.                     22,400         1,148
  Boatmans Bancshares, Inc.              29,100         1,026
  Chase Manhattan Corporation            41,100         1,932
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
BANKS (CONTINUED)
  Chemical Banking Corporation           55,700    $    2,632
  Citicorp                               91,900         5,319
  Corestates Financial Corp.             33,400         1,165
  First Chicago Corporation              20,800         1,245
  First Fidelity Bancorporation          18,700         1,103
  First Interstate Bancorp               17,600         1,412
  First Union Corporation                39,800         1,801
  Fleet Financial Group Inc.             32,700         1,214
  KeyCorp                                55,000         1,726
  Mellon Bank Corporation                33,850         1,409
  J.P. Morgan & Company, Inc.            43,400         3,043
  NBD Bancorp, Inc.                      37,000         1,184
  National City Corp.                    33,900           996
  NationsBank Corp.                      62,800         3,368
  Norwest Corporation                    74,900         2,153
  PNC Financial Corp.                    52,900         1,395
  Shawmut National Corp.                 29,700           947
  Suntrust Banks Inc.                    26,600         1,549
  U.S. Bancorp of Oregon                 22,700           546
  Wachovia Corporation                   39,600         1,416
  Wells Fargo & Company                  11,400         2,055
                                                   ----------
      Total                                            53,156
                                                   ----------
BEVERAGES (1.8%)
  Anheuser-Busch Companies Inc.          59,300         3,373
  Brown-Forman Corp.                     16,000           534
  The Coca-Cola Company                 293,200        18,691
  Adolph Coors Co.                        8,800           144
  Pepsico Inc.                          182,200         8,313
  Seagram Company Ltd.                   86,200         2,985
                                                   ----------
      Total                                            34,040
                                                   ----------
BUILDING & CONSTRUCTION (0.1%)
  Centex Corporation                      6,600           186
  Crane Co.                               7,000           254
  Kaufman & Broad Home Corp.              7,400           107
  Masco Corporation                      36,300           980
  Morrison Knudsen Corporation            7,500            51
  *Owens-Corning Fiberglas Corporation   11,000           406
  Pulte Corporation                       6,200           174
  Sherwin-Williams Company               19,700           702
                                                   ----------
      Total                                             2,860
                                                   ----------
BUILDING-FOREST PRODUCTS (0.3%)
  Boise Cascade Corporation              10,900           441
  Champion International                 21,600         1,126
  Georgia-Pacific Corporation            21,000         1,822
  Louisiana-Pacific Corporation          24,900           654
  Potlatch Corporation                    6,800           284
  Weyerhaeuser Company                   47,600         2,243
                                                   ----------
      Total                                             6,570
                                                   ----------
CHEMICALS (1.5%)
  Air Products & Chemicals, Inc.         25,800         1,438
  Dow Chemical Company                   63,700         4,578
  Eastman Chemical Company               19,275         1,147
  E.I. Du Pont De Nemours & Co.         127,800         8,786
  Ecolab, Inc.                           14,900           365
  *FMC Corporation                        8,500           572
  First Mississippi Corp.                 4,700           160
  W.R. Grace & Co.                       21,800         1,338
</TABLE>
 
                                       69
<PAGE>   73
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
COMMON STOCK (CONTINUED)
CHEMICALS (CONTINUED)
  Great Lakes Chemical                   15,300    $      922
  Hercules Incorporated                  27,000         1,316
  Mallinckrodt Group Inc.                17,700           628
  Monsanto Company                       26,400         2,379
  PPG Industries Inc.                    47,700         2,051
  Praxair                                31,900           798
  Rohm & Haas Company                    15,600           856
  Union Carbide Corporation              31,700         1,058
                                                   ----------
      Total                                            28,392
                                                   ----------
CHEMICALS-SPECIALTY (0.2%)
  Avery Dennison Corp.                   12,300           492
  Engelhard Corp.                        22,000           943
  B.F. Goodrich Company                   6,000           322
  Morton International, Inc.             34,200         1,000
  Nalco Chemical Company                 15,700           571
  Sigma-Aldrich Corp.                    11,500           565
                                                   ----------
      Total                                             3,893
                                                   ----------
COAL, GAS & PIPELINE (0.1%)
  Eastern Enterprises                     4,700           140
  NACCO Industries, Inc.                  2,100           126
  Sonat Inc.                             20,000           610
                                                   ----------
      Total                                               876
                                                   ----------
CONTAINERS (0.1%)
  Ball Corporation                        7,000           244
  Bemis Company, Inc.                    11,900           309
  *Crown Cork & Seal Company,
    Inc.                                 20,900         1,048
                                                   ----------
      Total                                             1,601
                                                   ----------
DIVERSIFIED (1.0%)
  Allied Signal Inc.                     65,800         2,928
  Corning Inc.                           53,000         1,736
  The Dial Corp.                         21,500           532
  ITT Corp.                              24,400         2,867
  Minnesota Mining & Manufacturing Co.   97,100         5,559
  National Service Industries,
    Inc.                                 11,200           323
  Ogden Corporation                      11,300           247
  *Teledyne, Inc.                        12,800           314
  Tenneco Inc.                           41,800         1,923
  Textron Inc.                           19,700         1,145
  Tyco Laboratories, Inc.                17,700           956
  Whitman Corporation                    24,300           471
  Worthington Industries, Inc.           21,000           429
                                                   ----------
      Total                                            19,430
                                                   ----------
DRUGS (2.6%)
  *ALZA Corp.                            19,000           444
  American Home Products Corp.           71,300         5,517
  *Amgen Inc.                            30,600         2,461
  Bristol-Myers Squibb Company          117,300         7,991
  Eli Lily & Company                     67,600         5,307
  Merck & Co., Inc.                     286,000        14,014
  Pfizer Inc.                            73,000         6,743
  Schering-Plough Corporation            86,100         3,799
  Upjohn Company                         40,000         1,515
  Warner-Lambert Company                 31,200         2,695
                                                   ----------
      Total                                            50,486
                                                   ----------
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
ELECTRICAL EQUIPMENT (1.6%)
  Emerson Electric Co.                   54,000    $    3,861
  General Electric Company              391,800        22,088
  W.W. Grainger, Inc.                    11,700           687
  Honeywell Inc.                         29,400         1,268
  Raychem Corp.                          10,200           391
  Thomas & Betts Corporation              4,500           308
  Westinghouse Electric
    Corporation                          82,800         1,211
                                                   ----------
      Total                                            29,814
                                                   ----------
ELECTRONICS (1.3%)
  *Advanced Micro Devices, Inc.          23,900           869
  AMP Incorporated                       48,500         2,049
  *Applied Materials Inc.                19,500         1,689
  Harris Corporation                      9,000           465
  Intel Corp.                           191,600        12,131
  Micron Technology                      47,500         2,607
  *National Semiconductor Corporation    28,700           796
  The Perkin-Elmer Corporation            9,700           344
  Tektronix, Inc.                         7,500           369
  Texas Instruments Incorporated         21,500         2,878
  *Zenith Electronics Corp.              10,800            80
                                                   ----------
      Total                                            24,277
                                                   ----------
ENGINEERING & CONSTRUCTION (0.1%)
  Fluor Corporation                      19,100           993
                                                   ----------
ENVIRONMENTAL CONTROL (0.3%)
  Browning-Ferris Industries Inc.        49,200         1,777
  Johnson Controls Inc.                   9,400           531
  Laidlaw Transportation Limited         64,100           617
  Millipore Corp.                         5,200           351
  Safety-Kleen Corp.                     13,300           214
  WMX Technologies, Inc.                111,900         3,175
  Zurn Industries, Inc.                   2,800            56
                                                   ----------
      Total                                             6,721
                                                   ----------
FEDERAL GOVERNMENT AGENCY RELATED (0.5%)
  Federal Home Loan Mortgage Corp.       41,800         2,874
  Federal National Mortgage
    Assoc.                               63,100         5,955
                                                   ----------
      Total                                             8,829
                                                   ----------
FINANCIAL SERVICES (0.9%)
  American Express Company              114,700         4,029
  Beneficial Corporation                 12,200           537
  Dean Witter, Discover & Co.            39,050         1,835
  Household International Inc.           22,300         1,104
  MBNA Corp.                             34,350         1,159
  Marsh & McLennan Companies Inc.        16,900         1,371
  Merrill Lynch & Co., Inc.              40,700         2,137
  Salomon Inc.                           24,600           987
  Transamerica Corporation               16,000           932
  Travelers Group Inc.                   73,946         3,235
                                                   ----------
      Total                                            17,326
                                                   ----------
FOOD SERVICES/LODGING (0.5%)
  *Darden Restaurant Inc.                36,500           397
  *Harrah's Entertainment                23,700           817
  Hilton Hotels Corporation              11,200           787
  Luby's Cafeterias, Inc.                 5,500           111
  Marriott International                 28,300         1,015
  McDonald's Corporation                160,400         6,276
  Promus Hotels                          11,850           108
</TABLE>
 
                                       70
<PAGE>   74
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
COMMON STOCK (CONTINUED)
FOOD SERVICES/LODGING (CONTINUED)
  *Ryan's Family Steak Houses,
    Inc.                                 12,300    $       97
  *Shoney's Inc.                          9,500           112
  Wendy's International, Inc.            23,600           422
                                                   ----------
      Total                                            10,142
                                                   ----------
FOODS (1.6%)
  Archer Daniels Midland Company        119,333         2,223
  CPC International Corp.                33,800         2,087
  Campbell Soup Company                  57,600         2,822
  ConAgra Inc.                           56,800         1,981
  General Mills, Inc.                    36,600         1,880
  H.J. Heinz Company                     56,300         2,498
  Hershey Foods Corporation              20,100         1,111
  Kellogg Company                        50,800         3,626
  Pioneer Hi-Bred International          19,600           823
  Quaker Oats Company                    30,900         1,016
  Ralston Purina Group                   23,200         1,183
  Sara Lee Corporation                  110,900         3,161
  Unilever, N.V.                         37,000         4,815
  Wm. Wrigley Jr. Company                26,900         1,247
                                                   ----------
      Total                                            30,473
                                                   ----------
HOSPITAL SUPPLIES (1.8%)
  Abbott Laboratories Inc.              184,600         7,476
  Allergan Incorporated                  14,800           401
  C.R. Bard, Inc.                        12,100           363
  Bausch & Lomb Inc.                     13,500           560
  Baxter International Inc.              64,600         2,350
  Becton, Dickinson & Company            15,500           903
  *Beverly Enterprises, Inc.             19,800           245
  *Biomet, Inc.                          26,900           417
  *Boston Scientific Corp.               34,700         1,106
  Columbia/HCA Healthcare Corp.         102,400         4,429
  *Community Psychiatric Centers         10,000           113
  Johnson & Johnson                     149,300        10,096
  Manor Care, Inc.                       14,400           419
  Medtronic, Incorporated                26,700         2,059
  St. Jude Medical, Inc.                 10,800           541
  *Tenet Healthcare Corp                 46,200           664
  United Healthcare Corp.                40,100         1,659
  U.S. HealthCare Incorporated           37,100         1,136
  U.S. Surgical Corporation              13,200           276
                                                   ----------
      Total                                            35,213
                                                   ----------
HOUSEHOLD FURNITURE/APPLIANCES (0.3%)
  Armstrong World Industries,
    Inc.                                  8,600           431
  Bassett Furniture Industries,
    Inc.                                  3,300            92
  Black & Decker Corporation             19,700           608
  Maytag Corporation                     24,900           398
  Newell Co.                             36,500           894
  Premark International, Inc.            14,100           731
  Rubbermaid, Inc.                       37,200         1,032
  The Stanley Works                      10,300           390
  Whirlpool Corporation                  17,100           941
                                                   ----------
      Total                                             5,517
                                                   ----------
INSURANCE (1.3%)
  Aetna Life & Casualty Company          26,100         1,641
  Alexander & Alexander Services         10,200           244
  American General Corporation           47,400         1,600
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
INSURANCE (CONTINUED)
  American International Group,
    Inc                                  73,100    $    8,333
  CIGNA Corporation                      16,700         1,296
  The Chubb Corporation                  20,100         1,611
  General Re Corporation                 19,000         2,544
  Jefferson-Pilot Corp.                  11,200           613
  Lincoln National Corporation           21,900           958
  Loews Corp.                            13,600         1,646
  Providian Corporation                  22,300           808
  SAFECO Inc.                            14,600           839
  St. Paul Companies, Inc.               19,500           960
  Torchmark Corporation                  16,500           623
  UNUM Corporation                       16,800           788
  USF&G Corp.                            22,900           372
  USLIFE Corporation                      5,300           213
                                                   ----------
      Total                                            25,089
                                                   ----------
LEISURE RELATED (0.7%)
  *Bally Entertainment
    Corporation                          10,800           132
  Brunswick Corporation                  22,200           377
  Walt Disney Company                   120,500         6,703
  Fleetwood Enterprises, Inc.            10,600           209
  Handleman Co.                           7,700            74
  Hasbro Inc.                            20,300           645
  *King World Productions, Inc.           8,500           344
  Mattel, Inc.                           51,168         1,330
  Outboard Marine Corporation             4,600            90
  Skyline Corporation                     2,600            47
  *Viacom Incorporated                   83,256         3,840
                                                   ----------
      Total                                            13,791
                                                   ----------
MACHINERY (0.7%)
  Briggs & Stratton Corporation           6,900           238
  Caterpillar Inc.                       46,200         2,968
  Cincinnati Milacron Inc.                7,800           211
  *Clark Equipment Company                4,000           344
  Cooper Industries, Inc.                27,100         1,070
  Cummins Engine Company, Inc.            9,400           410
  Deere & Company                        20,000         1,713
  Dover Corporation                      13,100           953
  Foster Wheeler Corporation              8,300           293
  General Signal Corporation             10,900           433
  Giddings & Lewis Company                8,000           143
  Harnischfeger Industries, Inc.         10,600           367
  Illinois Tool Works Inc.               26,400         1,452
  Ingersoll-Rand Company                 24,400           933
  Pall Corporation                       26,866           598
  Parker-Hannifin Corporation            17,100           620
  The Timken Company                      7,200           332
  TRINOVA Corp.                           6,700           235
  *Varity Corporation                     9,600           422
                                                   ----------
      Total                                            13,735
                                                   ----------
MEDIA (0.5%)
  CBS Inc.                               14,200           951
  Capital Cities/ABC, Inc.               35,600         3,845
  Comcast Corp.                          55,450         1,029
  *Tele-Communications, Inc.            151,000         3,539
                                                   ----------
      Total                                             9,364
                                                   ----------
METALS & MINING (0.7%)
  Alcan Aluminum Limited                 52,000         1,573
</TABLE>
 
                                       71
<PAGE>   75
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
COMMON STOCK (CONTINUED)
METALS & MINING (CONTINUED)
  Aluminum Co. of America                41,200    $    2,065
  ASARCO, Inc.                            9,800           299
  Barrick Gold Corporation               81,700         2,063
  Cyprus Minerals Co.                    21,400           610
  Echo Bay Mines Limited                    100             1
  Echo Bay Mines Limited                 25,900           233
  Homestake Mining Company               31,900           526
  Inco Limited                           27,100           766
  Newmont Mining Corporation             19,889           833
  Phelps Dodge Corporation               16,100           950
  Placer Dome Incorporated               55,200         1,442
  Reynolds Metals Company                14,500           750
  Santa Fe Pacific Gold Corp.            30,340           368
                                                   ----------
      Total                                            12,479
                                                   ----------
OFFICE EQUIPMENT (2.1%)
  *Amdahl Corporation                    27,300           304
  Apple Computer, Inc.                   28,000         1,300
  *Cabletron Systems Inc.                16,600           884
  *Ceridian Corp.                        10,500           387
  *Cisco Systems Incorporated            62,100         3,140
  *Compaq Computer Corporation           60,500         2,745
  *Cray Research, Inc.                    5,800           141
  *Data General Corporation               8,500            82
  *Digital Equipment Corporation         34,000         1,386
  Hewlett-Packard Company               118,000         8,791
  *Intergraph Corp.                      10,600           118
  International Business Machines Corp. 134,300        12,893
  Moore Corporation Ltd.                 23,000           509
  Pitney Bowes Inc.                      34,900         1,339
  Silicon Graphics                       36,700         1,463
  *Sun Microsystems Inc.                 22,100         1,072
  *Tandem Computers Inc.                 26,900           434
  *Unisys Corporation                    39,600           431
  Xerox Corporation                      24,800         2,908
                                                   ----------
      Total                                            40,327
                                                   ----------
OFFICE EQUIPMENT-SERVICES (1.4%)
  Alco Standard Corporation              12,700         1,014
  Autodesk, Inc.                         11,000           473
  Automatic Data Processing, Inc.        33,300         2,094
  Computer Associates International Inc. 37,000         2,507
  *Computer Sciences Corp.               12,700           722
  First Data Corporation                 27,700         1,575
  *Lotus Development Corporation         11,000           701
  *Microsoft Corporation                134,400        12,146
  Novell, Inc.                           84,700         1,689
  *Oracle Systems Corp.                  99,700         3,851
  Shared Medical Systems Corp.            5,300           213
                                                   ----------
      Total                                            26,985
                                                   ----------
OIL & GAS-DOMESTIC (0.8%)
  Amerada Hess Corporation               21,500         1,051
  Ashland Oil, Inc.                      14,400           506
  Atlantic Richfield Company             37,200         4,083
  Burlington Resource Inc.               29,300         1,080
  Coastal Corp.                          24,200           735
  Kerr-McGee Corporation                 12,000           644
  Louisiana Land & Exploration
    Co.                                   7,700           307
  Occidental Petroleum
    Corporation                          73,400         1,679
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
OIL & GAS-DOMESTIC (CONTINUED)
  *Oryx Energy Company                   23,900    $      329
  Pennzoil Company                       10,700           504
  Phillips Petroleum Company             60,600         2,023
  *Santa Fe Energy Resources,
    Inc.                                 20,900           199
  Sun Company, Inc.                      24,700           676
  Unocal Corp.                           56,500         1,561
                                                   ----------
      Total                                            15,377
                                                   ----------
OIL & GAS-INTERNATIONAL (3.3%)
  Amoco Company                         114,800         7,649
  Chevron Corp.                         150,800         7,031
  Exxon Corporation                     287,300        20,291
  Mobil Corporation                      91,500         8,784
  Royal Dutch Petroleum Co., ADR        124,000        15,113
  Texaco Inc.                            60,100         3,944
                                                   ----------
      Total                                            62,812
                                                   ----------
OIL FIELD SERVICES (0.4%)
  Baker Hughes Inc.                      32,600           668
  Dresser Industries, Inc.               42,100           937
  Halliburton Company                    26,400           944
  Helmerich & Payne, Inc.                 5,700           168
  McDermott International, Inc.          12,400           299
  *Rowan Companies, Inc.                 19,400           158
  Schlumberger Limited                   56,000         3,479
  *Western Atlas Inc.                    12,200           541
                                                   ----------
      Total                                             7,194
                                                   ----------
PAPER (0.6%)
  Federal Paper Board Company,
    Inc.                                  9,900           350
  International Paper Company            29,300         2,512
  James River Corp. of Virginia          18,900           522
  Kimberly-Clark Corporation             37,100         2,221
  Mead Corp.                             13,000           772
  Scott Paper Company                    35,000         1,732
  *Stone Container Corporation           20,900           444
  Temple-Inland Inc.                     13,000           619
  Union Camp Corporation                 16,200           938
  Westvaco Corporation                   15,600           690
                                                   ----------
      Total                                            10,800
                                                   ----------
PHOTO & OPTICAL (0.3%)
  Eastman Kodak Company                  78,700         4,771
  Polaroid Corporation                   10,400           424
                                                   ----------
      Total                                             5,195
                                                   ----------
PRINTING & PUBLISHING (0.8%)
  American Greetings Corp.               17,200           505
  Deluxe Corp.                           19,100           633
  R.R. Donnelley & Sons Company          35,200         1,267
  Dow Jones & Company, Inc.              22,400           826
  Dun & Bradstreet Corporation           39,200         2,058
  Gannett Company Inc.                   32,400         1,758
  Harcourt General                       16,800           714
  The John H. Harland Company             7,100           162
  Jostens, Inc.                          10,500           223
  Knight-Ridder Inc.                     11,500           654
  McGraw-Hill, Inc.                      11,500           873
  Meredith Corporation                    6,400           162
  New York Times Company                 22,400           526
  Time Warner Inc.                       87,900         3,615
</TABLE>
 
                                       72
<PAGE>   76
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
COMMON STOCK (CONTINUED)
PRINTING & PUBLISHING (CONTINUED)
  Times Mirror Co.                       25,900    $      618
  Tribune Company                        15,200           933
                                                   ----------
      Total                                            15,527
                                                   ----------
PROFESSIONAL SERVICES (0.2%)
  H & R Block, Inc.                      24,200           995
  *CUC International Inc.                26,700         1,121
  Interpublic Group of Cos., Inc.        18,100           679
  Service Corporation
    International                        22,200           702
                                                   ----------
      Total                                             3,497
                                                   ----------
RAILROADS (0.5%)
  Burlington Northern Railroad,
    Inc.                                 20,700         1,312
  CSX Corporation                        24,300         1,826
  Conrail Incorporated                   18,100         1,007
  Norfolk Southern Corporation           30,500         2,055
  Santa Fe Pacific Corp.                 35,181           897
  Union Pacific Corporation              47,500         2,629
                                                   ----------
      Total                                             9,726
                                                   ----------
RETAIL-FOOD (0.4%)
  Albertson's, Inc.                      58,800         1,749
  American Stores Co.                    34,300           965
  Bruno's Inc.                           18,000           209
  Fleming Companies, Inc.                 8,700           231
  Giant Food Inc.                        13,700           389
  Great Atlantic & Pacific Co.,
    Inc.                                  8,800           232
  *The Kroger Company                    25,800           693
  Supervalu Inc.                         16,100           469
  Sysco Corporation                      42,200         1,245
  Winn-Dixie Stores, Inc.                17,500         1,011
                                                   ----------
      Total                                             7,193
                                                   ----------
RETAIL-GENERAL (2.4%)
  Charming Shoppes Incorporated          23,700           124
  Circuit City Stores, Inc.              22,300           705
  Dayton Hudson Corporation              16,600         1,191
  Dillard Department Stores, Inc.        26,100           767
  The Gap, Inc.                          33,300         1,161
  Home Depot, Inc.                      104,866         4,260
  K Mart Corporation                    105,700         1,546
  The Limited Inc.                       82,600         1,817
  Longs Drug Stores Corp.                 4,800           180
  Lowe's Companies, Inc.                 37,000         1,105
  May Department Stores Company          57,500         2,393
  Melville Corporation                   24,300           832
  Mercantile Stores Company               8,500           395
  Nordstrom, Inc.                        19,000           786
  J.C. Penney Company, Inc.              53,800         2,582
  Pep Boys - Manny, Moe & Jack           14,200           380
  *Price/Costco, Inc.                    45,051           732
  Rite Aid Corporation                   19,500           500
  Sears, Roebuck & Company               89,800         5,377
  The TJX Companies, Inc.                16,700           221
  Tandy Corporation                      17,000           882
  *Toys "R" Us                           64,100         1,875
  Wal-Mart Stores, Inc.                 531,400        14,215
  Walgreen Company                       28,500         1,429
  *Woolworth Corp.                       30,600           463
                                                   ----------
      Total                                            45,918
                                                   ----------
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                      SHARES        (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
SAVINGS & LOAN (0.1%)
  H.F. Ahmanson & Company                27,100    $      596
  Golden West Financial
    Corporation                          13,600           641
  Great Western Financial
    Corporation                          31,200           644
                                                   ----------
      Total                                             1,881
                                                   ----------
SOAPS & TOILETRIES (1.1%)
  Alberto-Culver Company                  6,400           194
  Avon Products, Inc.                    15,800         1,059
  The Clorox Company                     12,300           803
  Colgate-Palmolive Co.                  33,500         2,450
  Gillette Company                      102,400         4,570
  International Flavors & Fragrances,
    Inc.      25,800                                    1,284
  The Procter & Gamble Company          159,000        11,428
                                                   ----------
      Total                                            21,788
                                                   ----------
STEEL (0.2%)
  *Armco Inc.                            24,300           164
  Bethlehem Steel Corporation            25,500           414
  Inland Steel Industries, Inc.          11,200           342
  Nucor Corp.                            20,200         1,081
  USX-Marathon Group                     68,700         1,357
  USX-U S Steel Group Inc.               17,700           608
                                                   ----------
      Total                                             3,966
                                                   ----------
TELECOMMUNICATIONS (1.7%)
  AT&T Corporation                      366,000        19,444
  *Andrew Corporation                     8,950           518
  *DSC Communications Corp.              26,400         1,228
  *M/A-Com, Inc.                          6,200            73
  Motorola, Inc.                        136,100         9,136
  Northern Telecom Limited               58,600         2,139
  Scientific-Atlanta, Inc.               17,700           389
                                                   ----------
      Total                                            32,927
                                                   ----------
TOBACCO (0.9%)
  American Brands, Inc.                  43,700         1,737
  Philip Morris Companies, Inc.         195,400        14,533
  UST Incorporated                       45,300         1,348
                                                   ----------
      Total                                            17,618
                                                   ----------
TRANSPORTATION-MISC. (0.0%)
  Pittston Services Group                 9,600           230
                                                   ----------
TRUCKING-SHIPPING (0.1%)
  Consolidated Freightways, Inc.         10,000           221
  *Federal Express Corp.                 13,000           790
  Roadway Services, Inc.                  9,000           425
  Ryder System, Inc.                     18,200           435
  Yellow Corp.                            6,500           118
                                                   ----------
      Total                                             1,989
                                                   ----------
UTILITY-ELECTRIC (1.9%)
  American Electric Power Co.
    Inc.                                 42,900         1,507
  Baltimore Gas & Electric
    Company                              34,100           853
  Carolina Power & Light Company         36,200         1,095
  Central & South West
    Corporation                          44,200         1,160
  Cinergy Corporation                    35,905           943
  Consolidated Edison Co. of New York    54,300         1,602
  Detroit Edison Company                 33,500           988
  Dominion Resources Inc.                40,000         1,460
  Duke Power Company                     47,400         1,967
</TABLE>
 
                                       73
<PAGE>   77
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                      SHARES/        VALUE
                                        PAR         (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
COMMON STOCK (CONTINUED)
UTILITY-ELECTRIC (CONTINUED)
  Entergy Corporation                    52,700    $    1,271
  FPL Group, Inc.                        42,900         1,657
  General Public Utilities               26,700           794
  Houston Industries Incorporated        30,400         1,281
  Niagara Mohawk Power Corporation       33,400           493
  Northern States Power Company          15,600           720
  Ohio Edison Company                    35,300           799
  PECO Energy Company                    51,300         1,417
  Pacific Enterprises                    19,000           466
  Pacific Gas & Electric Company         99,500         2,886
  PacifiCorp                             65,700         1,232
  Public Service Enterprise Group, Inc.  56,600         1,571
  SCEcorp                               103,400         1,771
  The Southern Company                  153,900         3,444
  Texas Utilities Company                52,200         1,794
  Unicom Corp.                           49,600         1,321
  Union Electric Company                 23,600           879
                                                   ----------
      Total                                            35,371
                                                   ----------
UTILITY-GAS (0.3%)
  *Columbia Gas System Inc.              11,700           371
  Consolidated Natural Gas Co.           21,500           812
  ENSERCH Corporation                    15,500           265
  Enron Corp.                            58,200         2,044
  Nicor Inc.                             11,700           314
  Noram Energy Corporation               28,600           186
  ONEOK, Inc.                             6,200           133
  Panhandle Eastern Corporation          34,500           841
  Peoples Energy Corporation              8,100           210
  Williams Companies Inc.                23,400           816
                                                   ----------
      Total                                             5,992
                                                   ----------
UTILITY-TELEPHONE (2.9%)
  *Airtouch Communications              114,300         3,258
  ALLTEL Corporation                     43,700         1,109
  Ameritech Corporation                 128,000         5,632
  Bell Atlantic Corporation             100,900         5,650
  Bellsouth Corporation                 114,800         7,290
  GTE Corporation                       224,300         7,654
  MCI Communications Corporation        157,200         3,458
  NYNEX Corp.                            98,500         3,965
  Pacific Telesis Group                  98,100         2,624
  SBC Communications Incorporated       140,600         6,696
  Sprint Corporation                     80,600         2,710
  U S West Inc.                         108,900         4,533
                                                   ----------
      Total                                            54,579
                                                   ----------
      Total Common Stock                              925,101
                                                   ----------
PREFERRED STOCK (0.00%)
DIVERSIFIED (0.00%)
  Teledyne, Inc.                            258    $        4
                                                   ----------
      Total Preferred Stock                                 4
                                                   ----------
BONDS (34.2%)
AIRLINES (0.3%)
  Delta Air Lines, Inc., 9 3/4%,
    5/19/03                         $   532,000    $      592
  Delta Air Lines, Inc., 9 3/4%,
    6/1/03                            3,513,000         3,909
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                        PAR         (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
AIRLINES (CONTINUED)
  Delta Air Lines, Inc., 9 3/4%,
    6/1/03                          $   870,000    $      968
  Delta Air Lines, Inc., 9 3/4%,
    6/1/03                              870,000           968
                                                   ----------
      Total                                             6,437
                                                   ----------
AUTO RELATED (0.2%)
  Hertz Corp, 9.04%, 6/14/00          4,100,000         4,506
                                                   ----------
BANKS (0.6%)
  Natwest Capital Corporation,
    12 1/8%, 11/15/02                10,450,000        11,725
                                                   ----------
BEVERAGES (0.6%)
  Coca-Cola Enterprises Inc., 8%,
    1/4/05                           10,000,000        11,043
                                                   ----------
CHEMICALS (0.5%)
  Dow Capital B.V., 8 1/2%,
    6/8/10                            8,200,000         9,553
                                                   ----------
CMO & LOAN-BACKED CERTIFICATES (5.6%)
  CIT RV Owner Trust, 6 1/4%,
    1/15/11                           7,500,000         7,466
  Federal Home Loan Mortgage Corp.,
    7 1/4%, 4/15/18                  10,325,000        10,419
  Federal Home Loan Mortgage Corp.,
    7%, 3/15/07                       7,250,000         7,258
  Federal Home Loan Mortgage Corp.,
    6%, 7/15/07                      19,250,000        18,445
  Federal National Mortgage
    Assoc., 6 1/4%, 7/25/07          21,150,000        20,724
  Federal National Mortgage
    Assoc., 6 3/4%, 12/25/23          6,500,000         6,043
  Premier Auto Trust, 6.65%,
    4/2/98                            6,930,000         6,988
  Rural Housing Trust, 6.33%,
    4/1/26                           10,489,881        10,306
  Security Capital Trust, 7.3%,
    5/15/01                           8,000,000         8,071
  World Omni Grantor Trust,
    7.95%, 1/25/01                   10,000,000        10,243
                                                   ----------
      Total                                           105,963
                                                   ----------
DIVERSIFIED (0.4%)
  Tenneco Inc., 10%, 8/1/98           6,250,000         6,855
                                                   ----------
FEDERAL GOVERNMENT AND AGENCIES (15.4%)
  Federal National Mortgage Assoc.,
    7%, 12/1/23                      27,779,550        27,352
  Government National Mortgage Assoc.,
    7%, 9/15/23                         118,521           117
  Government National Mortgage Assoc.,
    7%, 10/15/23                        217,082           214
  Government National Mortgage Assoc.,
    7 1/2%, 8/15/24                     993,408           998
  Government National Mortgage Assoc.,
    7%, 9/15/23                          29,424            29
  Government National Mortgage Assoc.,
    7%, 7/15/23                         837,604           826
  Government National Mortgage Assoc.,
    7%, 5/15/23                       9,230,796         9,091
  Government National Mortgage Assoc.,
    7%, 5/15/23                       6,804,666         6,701
</TABLE>
 
                                       74
<PAGE>   78
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                                     VALUE
                                        PAR         (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
BONDS (CONTINUED)
FEDERAL GOVERNMENT AND AGENCIES (CONTINUED)
  Government National Mortgage Assoc.,
    7%, 6/15/23                       $ 352,437    $      348
  Government National Mortgage Assoc.,
    7%, 10/15/23                         30,222            30
  Government National Mortgage Assoc.,
    7%, 5/15/23                         207,988           205
  Government National Mortgage Assoc.,
    7 1/2%, 1/15/24                     237,767           239
  Government National Mortgage Assoc.,
    7%, 7/15/23                         818,845           806
  Government National Mortgage Assoc.,
    7%, 2/15/24                          44,350            44
  Government National Mortgage Assoc.,
    8 1/2%, 2/15/25                     159,638           166
  Government National Mortgage Assoc.,
    7%, 8/15/23                          29,531            29
  Government National Mortgage Assoc.,
    8 1/2%, 7/15/24                     280,674           291
  Government National Mortgage Assoc.,
    7%, 6/15/23                         763,888           753
  Government National Mortgage Assoc.,
    7%, 7/15/23                          68,312            67
  Government National Mortgage Assoc.,
    7%, 10/15/23                        169,145           166
  Government National Mortgage Assoc.,
    7%, 9/15/23                         734,939           724
  Government National Mortgage Assoc.,
    7 1/2%, 5/15/24                   1,092,890         1,098
  Government National Mortgage Assoc.,
    7%, 12/15/23                        884,549           872
  Government National Mortgage Assoc.,
    7%, 10/15/23                        127,642           126
  Government National Mortgage Assoc.,
    7 1/2%, 1/15/24                   1,159,804         1,166
  Government National Mortgage Assoc.,
    8 1/2%, 8/15/24                     328,268           341
  Government National Mortgage Assoc.,
    7%, 11/15/23                        823,144           811
  Government National Mortgage Assoc.,
    7%, 2/15/24                         139,760           138
  Government National Mortgage Assoc.,
    7%, 11/15/23                        860,725           848
  Government National Mortgage Assoc.,
    8 1/2%, 2/15/25                     937,858           973
  Government National Mortgage Assoc.,
    7%, 12/15/23                        739,817           718
  Government National Mortgage Assoc.,
    7%, 2/15/24                         335,816           326
  Government National Mortgage Assoc.,
    7%, 1/15/24                         922,903           909
  Government National Mortgage Assoc.,
    7%, 3/15/24                         713,381           703
  Government National Mortgage Assoc.,
    7%, 12/15/23                        904,561           891
  Government National Mortgage Assoc.,
    7%, 11/15/23                        608,486           600
  Government National Mortgage Assoc.,
    8 1/2%, 11/15/24                    433,446           450
  Government National Mortgage Assoc.,
    7%, 9/15/23                          35,807            35
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                        PAR         (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
FEDERAL GOVERNMENT AND AGENCIES (CONTINUED)
  Government National Mortgage Assoc.,
    7%, 2/15/24                       $ 746,976    $      736
  Government National Mortgage Assoc.,
    8 1/2%, 7/15/24                     265,581           276
  Government National Mortgage Assoc.,
    7%, 1/15/24                          53,500            53
  Government National Mortgage Assoc.,
    7%, 10/15/23                        123,876           122
  Government National Mortgage Assoc.,
    8 1/2%, 11/15/24                    243,874           253
  Government National Mortgage Assoc.,
    8 1/2%, 1/15/25                      25,318            26
  Government National Mortgage Assoc.,
    7%, 1/15/24                         245,252           243
  Government National Mortgage Assoc.,
    7 1/2%, 11/15/24                  1,011,278         1,016
  Government National Mortgage Assoc.,
    8 1/2%, 7/15/24                     345,060           358
  Government National Mortgage Assoc.,
    7 1/2%, 2/15/24                   1,658,661         1,667
  Government National Mortgage Assoc.,
    7 1/2%, 3/15/24                   1,577,214         1,585
  Government National Mortgage Assoc.,
    7 1/2%, 8/15/24                     993,428           998
  Government National Mortgage Assoc.,
    7%, 2/15/24                         827,253           815
  Government National Mortgage Assoc.,
    7%, 5/15/24                         812,705           800
  Government National Mortgage Assoc.,
    7 1/2%, 5/15/24                   1,437,013         1,444
  Government National Mortgage Assoc.,
    7 1/2%, 4/15/24                     977,776           983
  Government National Mortgage Assoc.,
    7 1/2%, 5/15/24                   1,492,060         1,500
  Government National Mortgage Assoc.,
    8 1/2%, 6/15/24                     861,309           894
  Government National Mortgage Assoc.,
    7%, 4/15/24                         126,820           125
  Government National Mortgage Assoc.,
    7%, 4/15/24                          30,144            30
  Government National Mortgage Assoc.,
    8 1/2%, 6/15/24                     377,162           391
  Government National Mortgage Assoc.,
    8 1/2%, 7/15/24                     225,102           234
  Government National Mortgage Assoc.,
    8 1/2%, 1/15/25                      71,835            75
  Government National Mortgage Assoc.,
    8 1/2%, 2/15/25                     500,284           519
  Government National Mortgage Assoc.,
    8 1/2%, 8/15/24                     347,927           361
  Government National Mortgage Assoc.,
    7%, 4/15/24                          97,340            96
  Government National Mortgage Assoc.,
    7 1/2%, 6/15/24                   1,506,029         1,514
  Government National Mortgage Assoc.,
    8 1/2%, 7/15/24                     274,382           285
  Government National Mortgage Assoc.,
    8 1/2%, 8/15/24                     243,200           253
  Government National Mortgage Assoc.,
    7 1/2%, 8/15/24                     996,104         1,001
  Government National Mortgage Assoc.,
    8 1/2%, 1/15/25                     161,480           168
</TABLE>
 
                                       75
<PAGE>   79
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                                     VALUE
                                        PAR         (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
BONDS (CONTINUED)
FEDERAL GOVERNMENT AND AGENCIES (CONTINUED)
  Government National Mortgage Assoc.,
    7 1/2%, 8/15/24                  $1,247,027    $    1,253
  Government National Mortgage Assoc.,
    8 1/2%, 8/15/24                     222,371           231
  Government National Mortgage Assoc.,
    8 1/2%, 2/15/25                     289,335           300
  Government National Mortgage Assoc.,
    7 1/2%, 6/15/24                      39,005            39
  Government National Mortgage Assoc.,
    8 1/2%, 8/15/24                     278,472           289
  Government National Mortgage Assoc.,
    8 1/2%, 9/15/24                     403,223           419
  Government National Mortgage Assoc.,
    8 1/2%, 2/15/25                      56,592            59
  Government National Mortgage Assoc.,
    8 1/2%, 12/15/24                    660,202           685
  Government National Mortgage Assoc.,
    8 1/2%, 2/15/25                      73,415            76
  Government National Mortgage Assoc.,
    8 1/2%, 2/15/25                     466,611           484
  Government National Mortgage Assoc.,
    8 1/2%, 2/15/23                     156,149           162
  Government National Mortgage Assoc.,
    8 1/2%, 9/15/22                     665,655           691
  Government National Mortgage Assoc.,
    8 1/2%, 10/15/22                    674,771           700
  Government National Mortgage Assoc.,
    7%, 5/15/23                         495,202           488
  Government National Mortgage Assoc.,
    8 1/2%, 9/15/21                     271,543           282
  Government National Mortgage Assoc.,
    8 1/2%, 7/15/21                     217,629           226
  Government National Mortgage Assoc.,
    8 1/2%, 5/15/22                     471,118           489
  Government National Mortgage Assoc.,
    8 1/2%, 10/15/22                     14,153            15
  Government National Mortgage Assoc.,
    8 1/2%, 9/15/22                     735,166           763
  Government National Mortgage Assoc.,
    8 1/2%, 10/15/22                    735,954           764
  Government National Mortgage Assoc.,
    8 1/2%, 1/15/23                     261,644           272
  Government National Mortgage Assoc.,
    8 1/2%, 2/15/23                     227,620           236
  Government National Mortgage Assoc.,
    8 1/2%, 12/15/22                    505,459           525
  U.S. Treasury, 7 1/8%, 2/15/23     28,000,000        29,558
  U.S. Treasury, 6 1/4%, 8/15/23     20,700,000        19,575
  U.S. Treasury, 7 1/2%, 11/15/24     8,500,000         9,414
  U.S. Treasury, 7 5/8%, 2/15/25     18,000,000        20,306
  U.S. Treasury, 6 7/8%, 10/31/96    25,000,000        25,321
  U.S. Treasury, 4 3/4%, 8/31/98     11,250,000        10,867
  U.S. Treasury, 7 1/4%, 8/15/04     26,000,000        27,763
  U.S. Treasury, 7 3/4%, 11/30/99    30,000,000        32,016
  U.S. Treasury, 7 1/2%, 1/31/97     30,000,000        30,750
                                                   ----------
      Total                                           294,040
                                                   ----------
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                        PAR         (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
FINANCE COMPANIES (1.6%)
  Associates Corp. of North America,
    6 7/8%, 1/15/97                 $ 7,800,000    $    7,875
  Associates Corp. of North America,
    5 1/4%, 9/1/98                    7,000,000         6,789
  Avco Financial Services Inc.,
    5 7/8%, 10/15/97                  6,800,000         6,751
  Ford Motor Credit Company,
    6 1/4%, 2/26/98                     300,000           300
  Ford Motor Credit Company,
    5 5/8%, 3/3/97                    9,000,000         8,917
                                                   ----------
      Total                                            30,632
                                                   ----------
FINANCIAL SERVICES (2.2%)
  Beneficial Corp, 6.86%,
    11/19/97                          7,800,000         7,892
  Beneficial Corp, 9 3/8%,
    7/28/97                           5,000,000         5,293
  Ford Motor Credit Grantor
    Trust,
    7.3%, 10/15/99                    5,643,730         5,733
  General Motors Acceptance
    Corp.,
    8 3/8%, 5/1/97                    3,000,000         3,098
  General Motors Acceptance
    Corp.,
    5 1/2%, 10/15/02                 10,751,000        11,765
  General Motors Corporation,
    8.8%, 3/1/21                      6,500,000         7,406
                                                   ----------
      Total                                            41,187
                                                   ----------
FOODS (0.6%)
  Nabisco Inc., 8%, 1/15/00           3,500,000         3,679
  RJR Nabisco Inc., 8 5/8%,
    12/1/02                           8,000,000         8,408
                                                   ----------
      Total                                            12,087
                                                   ----------
FOREIGN GOVERNMENT BONDS (0.4%)
  Province of Manitoba, 7 3/4%,
    7/17/16                           8,000,000         8,408
                                                   ----------
LEISURE RELATED (0.4%)
  Time Warner Entertainment Inc.,
    8 7/8%, 10/1/12                   1,500,000         1,598
  Time Warner Entertainment Inc.,
    7 1/4%, 9/1/08                    6,300,000         6,002
                                                   ----------
      Total                                             7,600
                                                   ----------
MEDIA (0.6%)
  Tele-Communications, Inc.,
    7 3/8%, 2/15/00                   8,000,000         8,038
  Tele-Communications, Inc.,
    7 7/8%, 8/1/13                    3,000,000         2,775
                                                   ----------
      Total                                            10,813
                                                   ----------
MUNICIPAL BONDS (0.2%)
  Government Trust-Greece,
    8%, 5/15/98                       3,310,176         3,388
                                                   ----------
OFFICE EQUIPMENT (0.4%)
  International Business
    Machines, 6 3/8%, 11/1/97         7,000,000         7,033
                                                   ----------
PRINTING & PUBLISHING (0.3%)
  News America Holdings Inc.,
    7 1/2%, 3/1/00                    6,500,000         6,632
                                                   ----------
</TABLE>
 
                                       76
<PAGE>   80
 
                     NORTHWESTERN MUTUAL SERIES FUND, INC.
                               BALANCED PORTFOLIO
                            SCHEDULE OF INVESTMENTS
                                 JUNE 30, 1995
<TABLE>
<CAPTION>
                                                     MARKET
                                                     VALUE
                                        PAR         (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
BONDS (CONTINUED)
TOBACCO (0.3%)
  Philip Morris Companies,
    9 1/4%, 2/15/00                 $ 2,100,000    $    2,317
  Philip Morris Companies,
    7 1/4%, 1/15/03                   3,000,000         3,052
                                                   ----------
      Total                                             5,369
                                                   ----------
UTILITY-ELECTRIC (3.6%)
  Long Island Lighting Co., 7%,
    3/1/04                           10,000,000         8,922
  Pacific Gas & Electric Co.,
    7 1/4%, 3/1/26                    9,050,000         8,654
  Pacific Gas & Electric Co.,
    5 3/8%, 8/1/98                    5,000,000         4,851
  Pacific Gas & Electric Co.,
    6 3/4%, 10/1/23                   6,400,000         5,748
  PECO Energy Company, 7 1/2%,
    1/15/99                           4,250,000         4,362
  PECO Energy Company, 7 3/4%,
    3/1/23                            8,850,000         8,799
  Public Service Electric & Gas,
    6 1/8%, 8/1/02                    9,000,000         8,675
  Texas Utilities Electric Co.,
    9.39%, 11/21/96                     250,000           260
  Texas Utilities Electric Co.,
    7 7/8%, 3/1/23                    7,750,000         7,803
  UNICOM Corp., 6 1/2%, 4/15/00      10,600,000        10,503
                                                   ----------
      Total                                            68,577
                                                   ----------
      Total Bonds                                     651,848
                                                   ----------
MONEY MARKET INVESTMENTS (17.2%)
BEVERAGES (1.0%)
  Anheuser-Busch Companies Inc.,
    5.90%, 7/14/95                  $20,000,000    $   19,957
                                                   ----------
CHEMICALS (0.5%)
  W.R. Grace & Co., 6 1/2%,
    12/1/95                          10,300,000        10,310
                                                   ----------
ELECTRICAL EQUIPMENT (1.1%)
  Emerson Electric Co, 5.93%,
    7/17/95                          20,000,000        19,947
                                                   ----------
FEDERAL GOVERNMENT AND AGENCIES (0.4%)
  +U.S. Treasury, 5.65%, 7/6/95       4,000,000         3,997
  U.S. Treasury, 5.4%, 12/21/95       4,000,000         3,891
                                                   ----------
      Total                                             7,888
                                                   ----------
 
<CAPTION>
                                                     MARKET
                                                     VALUE
                                        PAR         (000'S)
                                    -----------    ----------
<S>                                 <C>            <C>
FINANCE COMPANIES (2.7%)
  AT&T Capital Corp., 5.86%,
    7/21/95                         $25,700,000    $   25,616
  Ford Motor Credit Company,
    5.94%, 7/12/95                   25,000,000        24,955
                                                   ----------
      Total                                            50,571
                                                   ----------
FINANCIAL SERVICES (3.0%)
  American General Finance Corp.,
    8 7/8%, 3/15/96                   6,050,000         6,162
  American Telephone & Telegraph,
    5.92%, 7/14/95                   25,000,000        24,946
  General Electric Capital Corp.,
    5.95%, 7/7/95                    15,500,000        15,485
  Transamerica Financial Corp.,
    8.55%, 6/15/96                   10,950,000        11,136
                                                   ----------
      Total                                            57,729
                                                   ----------
FOODS (2.2%)
  Cargill Incorporated, 6.1%,
    7/3/95                           20,700,000        20,693
  H.J. Heinz Company, 5.86%,
    7/13/95                          21,600,000        21,558
                                                   ----------
      Total                                            42,251
                                                   ----------
RETAIL-GENERAL (1.1%)
  J.C. Penney Company, Inc.,
    5.92%, 7/24/95                   20,000,000        19,925
                                                   ----------
SOAPS & TOILETRIES (3.4%)
  Colgate-Palmolive Co., 5.89%,
    7/11/95                          22,000,000        21,964
  Colgate-Palmolive Co., 5.92%,
    8/7/95                           43,500,000        43,236
                                                   ----------
      Total                                            65,200
                                                   ----------
TELECOMMUNICATIONS (0.4%)
  U S West Capital Funding Inc.,
    8.99%, 11/14/95                   7,850,000         7,933
                                                   ----------
TOBACCO (1.4%)
  Philip Morris Companies, Inc.,
    5.94%, 7/14/95                   26,700,000        26,643
                                                   ----------
      Total Money Market Investments                  328,354
                                                   ----------
      Total Investments                            $1,905,307
                                                    =========
</TABLE>
 
* Non-Income Producing
 
+ Partially held by the custodian in a segregated account as collateral for open
  financial futures positions. Information regarding open futures contracts as
  of June 30, 1995 is summarized below:
 
<TABLE>
<CAPTION>
                                      MARKET VALUE                         UNREALIZED
                        NUMBER OF     OF CONTRACTS       EXPIRATION       APPRECIATION
       ISSUER           CONTRACTS       (000'S)             DATE            (000'S)
--------------------    ---------     ------------     --------------     ------------
<S>                     <C>           <C>              <C>                <C>
S&P 500 Stock Index        326           89,185        September 1995         1,393
</TABLE>
 
    The Accompanying Notes are an Integral Part of the Financial Statements
                       (Prepared from Unaudited Figures)
 
                                       77
<PAGE>   81
 
                                ---------------
 
                            THIS PAGE INTENTIONALLY
                                   LEFT BLANK
                                ---------------
 
                                       78
<PAGE>   82
 
                                ---------------
                            THIS PAGE INTENTIONALLY
                                   LEFT BLANK
                                ---------------
<PAGE>   83
<TABLE>
<S><C>
TO: / / Annuity Services Division - Policy Benefits Department (Individual IRA & Non-Tax             [NORTHWESTERN MUTUAL LIFE LOGO]
        Qualified/Personal) FAX - 414-299-2632
   
    / / Employer Product Services Division - Policyowner Services Department (Group Billing-
        Corporate, Pension, HR10, TDA & SEP) FAX - 414-299-5123

                   DEFERRED VARIABLE ANNUITY - TRANSFER OR ALLOCATION CHANGE

1.      CONTRACT INFORMATON
        Contract No._________________________________Annuitant________________________________________________________
                                                                               Please Print

2.      TRANSFER EXISTING BALANCES
        The minimum amount that may be transferred from any investment division is $100 or all of the units in that 
        division, whichever is less.  If you want to transfer the entire division, indicate "ALL."

                                                             TRANSFER FROM:                TRANSFER TO:


                                                                  NUMBER OF
                                                                ACCUMULATION                           PERCENT (WHOLE)
              INVESTMENT DIVISION             DOLLAR AMOUNT        UNITS          DOLLAR AMOUNT        PERCENTS ONLY

        1.  Select Bond                     $_____________    ______________     $_____________       _______________%
        2.  International Equity            $_____________    ______________     $_____________       _______________%
        3.  Money Market                    $_____________    ______________     $_____________       _______________%
        4.  Balanced                        $_____________    ______________     $_____________       _______________%
        5.  Index 500 Stock                 $_____________    ______________     $_____________       _______________%
        6.  Aggressive Growth Stock         $_____________ OR ______________     $_____________  OR   _______________%
        7.  High Yield Bond*                $_____________    ______________     $_____________       _______________%
        8.  Growth Stock*                   $_____________    ______________     $_____________       _______________%
        9.  Growth and Income Stock*        $_____________    ______________     $_____________       _______________%            
                                   TOTAL    $_____________        N/A            $_____________                   100%
                           
        Special Instructions:_________________________________________________________________________________________
        ______________________________________________________________________________________________________________

3.  CHANGE ALLOCATION OF FUTURE INVESTMENTS:
    Future investments will continue to be allocated as they were prior to the transfer shown above, unless new
    instructions are given below:  Please indicate in whole percents only, for a total of 100%.

    1. Select Bond             _____%     4. Balanced                 _____%      7. High Yield Bond*        _____%

    2. International Equity    _____%     5. Index 500 Stock          _____%      8. Growth Stock*           _____%

    3. Money Market            _____%     6. Aggressive Growth Stock  _____%      9. Growth and Income Stock*_____%

    *NOT AVAILABLE TO THE FOLLOWING CONTRACTS:  JJ SERIES, KK SERIES, LL SERIES "OLD ACCOUNT 1," AND ALL CONTRACTS
     ISSUED IN NML SEPARATE ACCOUNT C.

4.  EFFECTIVE DATE:
    This transfer and/or allocation of future investments shall be effective on ________________ (insert specific date
    if desired).  If no date is specified, or if this form is not received at NML's Home Office (see address on reverse
    side) on or prior to 3:00 p.m. Central time on that date, this transfer shall be effective on the date this form is
    received (complete and signed) at NML's Home Office.

5.  SIGNATURES OF OWNER(S)/TRUSTEE REQUIRED (TITLE MUST BE INCLUDED):

    ________________________________________________________________ Date signed_______________________________________

    ________________________________________________________________ Date signed_______________________________________

    Owner's Daytime No. (   )______________________________

                        FOR AGENT'S USE ONLY

/ / Instructions for this transfer were LINKed on ____________________________ (date).

    GA No. ________________ Agent No. _____________________

                                                                               (See over for FAX/LINK Instructions)

</TABLE>


<PAGE>   84
                           HOW TO SUBMIT THIS FORM


FIRST CLASS MAIL

Please mail form to Northwestern Mutual Life, Annuity Services/Employer Product
Services, P. O. Box 2099, Milwaukee, Wisconsin 53202-2099.  See Section 4
(other side) for effective date.

FAX

The completed/signed transfer/change of allocation form may be FAXed to the
Home Office at the numbers provided at the top of the form (other side).  The
original transfer form is not needed.  Please keep for your records.  See
Section 4 (other side) for effective date.

LINK

NML Agents only:  If timing is critical and FAX equipment is unavailable, the 
transfer/change of allocation request may be LINKED to the Home Office.  You
MUST have a completed, signed transfer form in your possession.  The original
signed transfer form must be received in the Home Office within five (5)
working days from the date of the LINK.  The effective date will be the date
that the LINK is received in the Home Office.  Be sure to complete the "Agent's
Use Only" box at the bottom of the form.



                            SIGNATURE INSTRUCTIONS



SIGNATURE BY OWNER

All Owners must sign name as it appears in the policy contract.  If the Owner's
name has changed since the policy was issued, he/she should add his/her present
surname to his/her name as it appears in the policy contract.

SIGNATURE BY ASSIGNEE

If the signer of the form is an assignee and the assignee is a bank, savings
and loan association, other financial institution or corporation, an officer
must sign with his/her title.  Name of corporate entity must appear above the
signature.

SIGNATURE ON BEHALF OF CORPORATION

If the signer of the form is a corporation, an officer of the corporation must
sign on behalf of the corporation with his/her title.  The name of the
corporation must appear above the signature.

SIGNATURE ON BEHALF OF PARTNERSHIP

If the signer of the form is a partnership, the name of the partnership must
appear above the signature.  A partner other than the Annuitant must sign.

SIGNATURE ON BEHALF OF TRUST

If the signer of the form is a Trust, the authorized Trustee must sign his/her
name, followed by the word "Trustee."  The name of the Trust must appear above
the signature.






© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission