# State Street Aggregate Bond Index Portfolio

State Street Aggregate Bond Index Portfolio is a registered fund series of STATE STREET INSTITUTIONAL INVESTMENT TRUST (series S000046031). Net assets $6.2B as of 2026-03-31. Index fund.

## Profile

- Series ID: S000046031
- Registrant: STATE STREET INSTITUTIONAL INVESTMENT TRUST
- LEI: 549300CYRPLDVB2ZTF93
- Net assets: $6.2B
- Total assets: $6.5B
- 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) | — | $207.9M | 337.55% |
| [State Street Global Advisors](https://search.stillhousedata.com/security/857492706) | — | $133.5M | 216.77% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CMN8) | — | $27.7M | 45.00% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CQB0) | — | $26.3M | 42.69% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CPJ4) | — | $26.0M | 42.29% |
| [United States Treasury](https://search.stillhousedata.com/security/912810UL0) | — | $25.8M | 41.95% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CNL1) | — | $25.0M | 40.56% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CNT4) | — | $24.4M | 39.64% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CPE5) | — | $23.9M | 38.77% |
| [United States Treasury](https://search.stillhousedata.com/security/912810UK2) | — | $23.9M | 38.73% |
| [State Street Global Advisors](https://search.stillhousedata.com/security/857492706) | — | $23.4M | 37.94% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CLF6) | — | $22.4M | 36.39% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CMM0) | — | $22.3M | 36.23% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CJZ5) | — | $22.2M | 36.04% |
| [United States Treasury](https://search.stillhousedata.com/security/91282CNC1) | — | $21.9M | 35.63% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-03-31 | $6.2B |
| 2025-12-31 | $5.8B |
| 2025-09-30 | $5.4B |
| 2025-06-30 | $4.8B |
| 2025-03-31 | $4.2B |
| 2024-12-31 | $4.0B |
| 2024-09-30 | $3.4B |
| 2024-06-30 | $3.0B |

## 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/S000046031.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.