Index 400 Stock Portfolio
NORTHWESTERN MUTUAL SERIES FUND INC
Index fund

Average annual returns

No trailing-return data available for this share class.

Risk statistics

81 months through March 31, 2026
Volatility (ann.)
16.22%
Sharpe
0.73
Sortino
1.28
Max drawdown
-29.69%
Best month
14.26%
Worst month
-20.19%
Beta vs VTSAX
1.13
Correlation
0.88

Derived from N-PORT monthly total returns; distinct from the prospectus returns above.

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