# Research International Core Portfolio

Research International Core Portfolio is a registered fund series of NORTHWESTERN MUTUAL SERIES FUND INC (series S000018230). Net assets $980.3M as of 2026-03-31.

## Profile

- Series ID: S000018230
- Registrant: NORTHWESTERN MUTUAL SERIES FUND INC
- LEI: 549300ZQ5NCCGE71IX14
- Net assets: $980.3M
- Total assets: $981.6M
- As of: 2026-03-31

## Advisers

- [Massachusetts Financial Services Company (Subadvisor)](https://search.stillhousedata.com/firm/110045)
- [Mason Street Advisors, LLC (Advisor)](https://search.stillhousedata.com/firm/114085)

## Top holdings (113 reported)

_Showing 15 of 113 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| Mizuho Financial Group Inc | — | $29.1M | 296.59% |
| Schneider Electric SE | — | $25.3M | 257.97% |
| Hitachi Ltd | — | $23.1M | 235.23% |
| Novartis AG | — | $22.1M | 224.98% |
| TotalEnergies SE | — | $20.8M | 212.31% |
| ASML Holding NV | — | $19.1M | 194.86% |
| Linde PLC | — | $17.9M | 182.47% |
| Taiwan Semiconductor Manufacturing Co Ltd | — | $17.4M | 177.24% |
| AstraZeneca PLC | — | $15.6M | 158.66% |
| Eni SpA | — | $14.8M | 150.53% |
| Tokyo Electron Ltd | — | $14.7M | 150.43% |
| British American Tobacco PLC | — | $14.0M | 143.25% |
| ING Groep NV | — | $14.0M | 142.34% |
| AIA Group Ltd | — | $13.9M | 141.87% |
| Barclays PLC | — | $13.5M | 137.84% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $980.3M |
| 2025-12-31 | $996.4M |
| 2025-09-30 | $969.1M |
| 2025-06-30 | $976.6M |
| 2025-03-31 | $899.1M |
| 2024-12-31 | $857.9M |
| 2024-09-30 | $924.7M |
| 2024-06-30 | $862.8M |

## 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/S000018230.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.