Active/Passive Balanced Portfolio

Active/Passive Balanced Portfolio is a registered fund series of NORTHWESTERN MUTUAL SERIES FUND INC (series S000000045). Net assets $1.9B as of 2026-03-31.

Profile

Series ID: S000000045
Registrant: NORTHWESTERN MUTUAL SERIES FUND INC
LEI: 4F2ZSMZDZU02NP7J8L64
Net assets: $1.9B
Total assets: $1.9B
As of: 2026-03-31
Type: Fund of funds

Advisers

Mason Street Advisors, LLC (Advisor)

Top holdings (30 reported)

Showing 15 of 30 holdings by value.

Holding	Ticker	Value	% of fund
Northwestern Mutual Series Fund, Inc. - Select Bond Portfolio	—	$484.8M	2512.65%
iShares Core U.S. Aggregate Bond ETF	—	$265.2M	1374.50%
Northwestern Mutual Series Fund, Inc. - Multi-Sector Bond Portfolio	—	$147.0M	762.16%
State Street SPDR Portfolio Long Term Treasury ETF	—	$97.7M	506.48%
iShares Core S&P 500 ETF	—	$96.5M	499.97%
Northwestern Mutual Series Fund, Inc. - International Equity Portfolio	—	$77.8M	403.11%
Northwestern Mutual Series Fund, Inc. - Emerging Markets Equity Portfolio	—	$72.4M	375.23%
State Street SPDR Portfolio S&P 400 Mid Cap ETF	—	$67.5M	349.81%
State Street SPDR Portfolio S&P 600 Small Cap ETF	—	$50.0M	259.03%
Northwestern Mutual Series Fund, Inc. - International Growth Portfolio	—	$46.5M	240.99%
Northwestern Mutual Series Fund, Inc. - Domestic Equity Portfolio	—	$43.4M	224.96%
Northwestern Mutual Series Fund, Inc. - Focused Appreciation Portfolio	—	$43.0M	222.93%
Northwestern Mutual Series Fund, Inc. - Large Cap Blend Portfolio	—	$42.7M	221.09%
iShares Core MSCI EAFE ETF	—	$41.9M	216.97%
Invesco S&P 500 Equal Weight ETF	—	$34.4M	178.23%

Net asset history

Report date	Net assets
2026-03-31	$1.9B
2025-12-31	$2.0B
2025-09-30	$2.0B
2025-06-30	$1.9B
2025-03-31	$1.9B
2024-12-31	$1.9B
2024-09-30	$2.0B
2024-06-30	$1.9B

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