# NORTHWESTERN MUTUAL SERIES FUND INC

NORTHWESTERN MUTUAL SERIES FUND INC (CIK 742212) is an SEC-registered fund company with 29 reporting fund series and $31.7B in net assets as of 2026-03-31.

## Registrant

- CIK: 742212
- File number: 811-03990
- LEI: 549300T1UBX7MDSNZA55
- Address: 720 E WISCONSIN AVE, MILWAUKEE, US-WI, 53202
- Phone: 414-271-1444
- Net assets: $31.7B
- Total assets: $32.8B
- Fund series: 29
- Latest report: 2026-03-31

## Fund series (29)

_Showing 25 of 29 series._

| Series | Net assets |
| --- | --- |
| [Index 500 Stock Portfolio](https://search.stillhousedata.com/fund/S000000043) | $7.1B |
| [Select Bond Portfolio](https://search.stillhousedata.com/fund/S000000047) | $2.8B |
| [International Equity Portfolio](https://search.stillhousedata.com/fund/S000000052) | $2.3B |
| [Active/Passive Balanced Portfolio](https://search.stillhousedata.com/fund/S000000045) | $1.9B |
| [Index 400 Stock Portfolio](https://search.stillhousedata.com/fund/S000000054) | $1.5B |
| [Focused Appreciation Portfolio](https://search.stillhousedata.com/fund/S000000055) | $1.4B |
| [Multi-Sector Bond Portfolio](https://search.stillhousedata.com/fund/S000018235) | $1.4B |
| [Growth Stock Portfolio](https://search.stillhousedata.com/fund/S000000056) | $1.3B |
| [Emerging Markets Equity Portfolio](https://search.stillhousedata.com/fund/S000018232) | $1.3B |
| [Domestic Equity Portfolio](https://search.stillhousedata.com/fund/S000000041) | $1.2B |
| [International Growth Portfolio](https://search.stillhousedata.com/fund/S000000051) | $1.1B |
| [Research International Core Portfolio](https://search.stillhousedata.com/fund/S000018230) | $980.3M |
| [Mid Cap Growth Stock Portfolio](https://search.stillhousedata.com/fund/S000000050) | $959.5M |
| [Large Cap Core Stock Portfolio](https://search.stillhousedata.com/fund/S000000040) | $766.0M |
| [Equity Income Portfolio](https://search.stillhousedata.com/fund/S000000042) | $755.4M |
| [Small Cap Growth Stock Portfolio](https://search.stillhousedata.com/fund/S000000039) | $732.8M |
| [High Yield Bond Portfolio](https://search.stillhousedata.com/fund/S000000046) | $698.2M |
| [Mid Cap Value Portfolio](https://search.stillhousedata.com/fund/S000000053) | $660.2M |
| [Small Cap Value Portfolio](https://search.stillhousedata.com/fund/S000000049) | $581.9M |
| [Index 600 Stock Portfolio](https://search.stillhousedata.com/fund/S000018231) | $525.9M |
| [Inflation Managed Portfolio](https://search.stillhousedata.com/fund/S000018228) | $419.8M |
| [Short-Term Bond Portfolio](https://search.stillhousedata.com/fund/S000018233) | $400.4M |
| [Active/Passive Moderate Portfolio](https://search.stillhousedata.com/fund/S000000044) | $294.4M |
| [Large Company Value Portfolio](https://search.stillhousedata.com/fund/S000018227) | $170.7M |
| [Large Cap Blend Portfolio](https://search.stillhousedata.com/fund/S000018229) | $156.9M |

## Largest reported holdings (across all series)

| Holding | Value |
| --- | --- |
| [United States Treasury](https://search.stillhousedata.com/security/91282CQB0) | $68.5M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CGS4) | $51.8M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CQH7) | $47.5M |
| [United States Treasury](https://search.stillhousedata.com/security/912810TC2) | $43.6M |
| [UMBS, TBA](https://search.stillhousedata.com/security/01F050643) | $42.2M |
| [UMBS, TBA](https://search.stillhousedata.com/security/01F052649) | $40.6M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CMZ1) | $39.7M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CHJ3) | $38.2M |
| [United States Treasury](https://search.stillhousedata.com/security/912810UP1) | $36.6M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CPR6) | $31.2M |
| [United States Treasury](https://search.stillhousedata.com/security/912810TA6) | $30.8M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CQG9) | $26.9M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CHR5) | $25.3M |
| [United States Treasury](https://search.stillhousedata.com/security/912810SF6) | $24.7M |
| [Freddie Mac](https://search.stillhousedata.com/security/3133KNJJ3) | $23.9M |

## More

- [CIK 742212 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=742212&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/registrant/742212.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.