# STATE STREET SMALL/MID CAP EQUITY INDEX FUND

STATE STREET SMALL/MID CAP EQUITY INDEX FUND is a registered fund series of STATE STREET INSTITUTIONAL INVESTMENT TRUST (series S000050331). Net assets $767.4M as of 2026-03-31. Index fund.

## Profile

- Series ID: S000050331
- Registrant: STATE STREET INSTITUTIONAL INVESTMENT TRUST
- LEI: 54930090OO78X0U66F30
- Net assets: $767.4M
- Total assets: $767.5M
- As of: 2026-03-31
- Type: Index

## Advisers

- [SSGA Funds Management, Inc. (Advisor)](https://search.stillhousedata.com/firm/111242)

## Top holdings (1 reported)

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [State Street Small/Mid Cap Equity Index Portfolio](https://search.stillhousedata.com/security/85749T707) | — | $767.5M | 10001.33% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $767.4M |
| 2025-12-31 | $782.0M |
| 2025-09-30 | $741.4M |
| 2025-06-30 | $683.9M |
| 2025-03-31 | $593.6M |
| 2024-12-31 | $644.5M |
| 2024-09-30 | $644.7M |
| 2024-06-30 | $574.9M |

## More

- [Registrant: STATE STREET INSTITUTIONAL INVESTMENT TRUST](https://search.stillhousedata.com/registrant/1107414)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000050331.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.