# Active/Passive Moderate Portfolio

Active/Passive Moderate Portfolio is a registered fund series of NORTHWESTERN MUTUAL SERIES FUND INC (series S000000044). Net assets $294.4M as of 2026-03-31.

## Profile

- Series ID: S000000044
- Registrant: NORTHWESTERN MUTUAL SERIES FUND INC
- LEI: 5DD2LVSRPBY8KFA02K39
- Net assets: $294.4M
- Total assets: $294.8M
- As of: 2026-03-31
- Type: Fund of funds

## Advisers

- [Mason Street Advisors, LLC (Advisor)](https://search.stillhousedata.com/firm/114085)

## Top holdings (30 reported)

_Showing 15 of 30 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [Northwestern Mutual Series Fund, Inc. - Select Bond Portfolio](https://search.stillhousedata.com/security/668140759) | — | $53.3M | 1811.20% |
| [iShares Core S&P 500 ETF](https://search.stillhousedata.com/security/464287200) | — | $25.1M | 853.99% |
| [iShares Core U.S. Aggregate Bond ETF](https://search.stillhousedata.com/security/464287226) | — | $21.7M | 738.55% |
| [Northwestern Mutual Series Fund, Inc. - International Equity Portfolio](https://search.stillhousedata.com/security/668140692) | — | $18.1M | 615.92% |
| [Northwestern Mutual Series Fund, Inc. - Multi-Sector Bond Portfolio](https://search.stillhousedata.com/security/668140882) | — | $14.9M | 506.43% |
| [State Street SPDR Portfolio S&P 400 Mid Cap ETF](https://search.stillhousedata.com/security/78464A847) | — | $14.1M | 479.99% |
| [Northwestern Mutual Series Fund, Inc. - Emerging Markets Equity Portfolio](https://search.stillhousedata.com/security/668140502) | — | $12.2M | 414.72% |
| [Northwestern Mutual Series Fund, Inc. - Domestic Equity Portfolio](https://search.stillhousedata.com/security/668140791) | — | $11.0M | 374.10% |
| [Northwestern Mutual Series Fund, Inc. - Focused Appreciation Portfolio](https://search.stillhousedata.com/security/668140775) | — | $11.0M | 372.30% |
| [Northwestern Mutual Series Fund, Inc. - Large Cap Blend Portfolio](https://search.stillhousedata.com/security/668140205) | — | $10.8M | 366.89% |
| [Invesco S&P 500 Equal Weight ETF](https://search.stillhousedata.com/security/46137V357) | — | $10.3M | 348.44% |
| [Northwestern Mutual Series Fund, Inc. - International Growth Portfolio](https://search.stillhousedata.com/security/668140684) | — | $10.2M | 346.05% |
| [iShares Core MSCI EAFE ETF](https://search.stillhousedata.com/security/46432F842) | — | $10.0M | 338.90% |
| [State Street SPDR Portfolio S&P 600 Small Cap ETF](https://search.stillhousedata.com/security/78468R853) | — | $7.5M | 255.96% |
| [iShares MSCI USA Value Factor ETF](https://search.stillhousedata.com/security/46432F388) | — | $6.8M | 231.39% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $294.4M |
| 2025-12-31 | $299.0M |
| 2025-09-30 | $295.6M |
| 2025-06-30 | $282.3M |
| 2025-03-31 | $267.3M |
| 2024-12-31 | $272.9M |
| 2024-09-30 | $284.5M |
| 2024-06-30 | $274.4M |

## More

- [Registrant: NORTHWESTERN MUTUAL SERIES FUND INC](https://search.stillhousedata.com/registrant/742212)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000000044.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.