# STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO

STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO is a registered fund series of STATE STREET INSTITUTIONAL INVESTMENT TRUST (series S000050332). Net assets $2.6B as of 2026-03-31. Index fund.

## Profile

- Series ID: S000050332
- Registrant: STATE STREET INSTITUTIONAL INVESTMENT TRUST
- LEI: 54930001FXUIVS800B48
- Net assets: $2.6B
- Total assets: $2.8B
- As of: 2026-03-31
- Type: Index

## Advisers

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

## Top holdings (200 reported)

_Showing 15 of 200 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [State Street Global Advisors](https://search.stillhousedata.com/security/857492706) | — | $155.8M | 593.53% |
| [Marvell Technology Inc](https://search.stillhousedata.com/security/573874104) | — | $29.8M | 113.61% |
| Spotify Technology SA | — | $26.5M | 101.07% |
| [Cloudflare Inc](https://search.stillhousedata.com/security/18915M107) | — | $23.0M | 87.67% |
| [Cheniere Energy Inc](https://search.stillhousedata.com/security/16411R208) | — | $21.5M | 81.94% |
| [State Street Global Advisors](https://search.stillhousedata.com/security/857492706) | — | $18.3M | 69.83% |
| [Snowflake Inc](https://search.stillhousedata.com/security/833445109) | — | $17.8M | 67.72% |
| Anglogold Ashanti Plc | — | $17.4M | 66.39% |
| NU Holdings Ltd/Cayman Islands | — | $17.1M | 65.14% |
| [Ferguson Enterprises Inc](https://search.stillhousedata.com/security/31488V107) | — | $15.8M | 60.37% |
| [Alnylam Pharmaceuticals Inc](https://search.stillhousedata.com/security/02043Q107) | — | $14.9M | 56.82% |
| [Strategy Inc](https://search.stillhousedata.com/security/594972408) | — | $13.8M | 52.72% |
| [ROBLOX Corp](https://search.stillhousedata.com/security/771049103) | — | $12.5M | 47.50% |
| [Insmed Inc](https://search.stillhousedata.com/security/457669307) | — | $12.2M | 46.39% |
| [Rocket Lab Corp](https://search.stillhousedata.com/security/773121108) | — | $11.2M | 42.57% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $2.6B |
| 2025-12-31 | $2.6B |
| 2025-09-30 | $2.6B |
| 2025-06-30 | $2.5B |
| 2025-03-31 | $2.5B |
| 2024-12-31 | $2.8B |
| 2024-09-30 | $2.8B |
| 2024-06-30 | $2.4B |

## 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/S000050332.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.