# SIIT LONG DURATION FUND

SIIT LONG DURATION FUND is a registered fund series of SEI INSTITUTIONAL INVESTMENTS TRUST (series S000006762). Net assets $783.5M as of 2026-05-31.

## Profile

- Series ID: S000006762
- Registrant: SEI INSTITUTIONAL INVESTMENTS TRUST
- LEI: 1BMBUNURU48A1EP6KD61
- Net assets: $783.5M
- Total assets: $799.3M
- As of: 2026-05-31

## Advisers

- [METROPOLITAN WEST Asset Management LLC (Subadvisor)](https://search.stillhousedata.com/firm/104571)
- [INCOME RESEARCH & MANAGEMENT (Subadvisor)](https://search.stillhousedata.com/firm/104863)
- [SEI Investments Management Corporation (Advisor)](https://search.stillhousedata.com/firm/105146)
- [JENNISON ASSOCIATES LLC (Subadvisor)](https://search.stillhousedata.com/firm/107959)
- [LEGAL & GENERAL Investment Management America Inc. (Subadvisor)](https://search.stillhousedata.com/firm/149156)

## Top holdings (200 reported)

_Showing 15 of 200 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| US 2YR NOTE (CBT) SEP26 | 1TUU26 | $73.9M | 943.81% |
| [United States of America](https://search.stillhousedata.com/security/912810UU0) | — | $36.8M | 469.41% |
| US 10YR ULTRA FUT SEP26 | 1TNU26 | $26.7M | 340.45% |
| [United States of America](https://search.stillhousedata.com/security/91282CQQ7) | — | $25.1M | 320.83% |
| [United States of America](https://search.stillhousedata.com/security/912810SL3) | — | $21.1M | 269.89% |
| [SEI DAILY INCOME TRUST GOVERNMENT FUND (#36)](https://search.stillhousedata.com/security/783965593) | — | $18.0M | 229.28% |
| [United States of America](https://search.stillhousedata.com/security/912810UN6) | — | $14.5M | 185.00% |
| United States of America | FVU26 | $11.1M | 142.31% |
| [United States of America](https://search.stillhousedata.com/security/912810UV8) | — | $11.1M | 142.07% |
| United States of America | USU26 | $10.7M | 136.06% |
| [United States of America](https://search.stillhousedata.com/security/912810TU2) | — | $9.5M | 120.68% |
| [United States of America](https://search.stillhousedata.com/security/912810UF3) | — | $8.7M | 110.41% |
| [United States of America](https://search.stillhousedata.com/security/912810SD1) | — | $8.3M | 106.31% |
| [United States of America](https://search.stillhousedata.com/security/912810RT7) | — | $8.0M | 101.69% |
| [United States of America](https://search.stillhousedata.com/security/912810UR7) | — | $7.9M | 101.02% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-05-31 | $783.5M |
| 2026-02-28 | $809.9M |
| 2025-11-30 | $713.2M |
| 2025-08-31 | $530.8M |
| 2025-05-31 | $494.2M |
| 2025-02-28 | $399.2M |
| 2024-11-30 | $385.5M |
| 2024-08-31 | $382.3M |

## More

- [Registrant: SEI INSTITUTIONAL INVESTMENTS TRUST](https://search.stillhousedata.com/registrant/939934)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000006762.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.