# iShares Ultra Short Duration Bond Active ETF

iShares Ultra Short Duration Bond Active ETF is a ETF series of iShares U.S. ETF Trust (series S000040474). Net assets $7.3B as of 2026-04-30.

## Profile

- Series ID: S000040474
- Registrant: iShares U.S. ETF Trust
- LEI: 549300JE6SRZTXKUCU42
- Net assets: $7.3B
- Total assets: $7.6B
- As of: 2026-04-30
- Type: ETF

## Advisers

- [BlackRock Fund Advisors (Advisor)](https://search.stillhousedata.com/firm/105247)
- [BlackRock International Limited (Subadvisor)](https://search.stillhousedata.com/firm/106843)

## Top holdings (200 reported)

_Showing 15 of 200 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [BlackRock Funds III](https://search.stillhousedata.com/security/066922519) | — | $147.5M | 202.71% |
| MIZUHO SECURITIES USA LLC | — | $120.0M | 164.92% |
| CITIGROUP GLOBAL MARKETS INC | — | $96.0M | 131.93% |
| GOLDMAN SACHS & CO LLC | — | $90.0M | 123.69% |
| WELLS FARGO SECURITIES LLC | — | $90.0M | 123.69% |
| [Marubeni Finance America LLC](https://search.stillhousedata.com/security/57382FE18) | — | $75.0M | 103.06% |
| [Cooperatieve Rabobank UA/NY](https://search.stillhousedata.com/security/21684X5Y8) | — | $60.0M | 82.39% |
| [NORTHWESTERN MUTUAL GLBL](https://search.stillhousedata.com/security/66815L3A5) | — | $57.5M | 78.97% |
| BOFA SECURITIES INC | — | $54.8M | 75.24% |
| [CDP Financial Inc](https://search.stillhousedata.com/security/12509TQQ3) | — | $54.7M | 75.20% |
| [PACIFIC LIFE GF II](https://search.stillhousedata.com/security/6944PL3P2) | — | $54.2M | 74.53% |
| [SALESFORCE INC](https://search.stillhousedata.com/security/79466LAQ7) | — | $53.4M | 73.42% |
| [NEW YORK LIFE GLOBAL FDG](https://search.stillhousedata.com/security/64953BCG1) | — | $53.4M | 73.39% |
| [MORGAN STANLEY PVT BANK](https://search.stillhousedata.com/security/61776NZU0) | — | $53.0M | 72.89% |
| [HONEYWELL AEROSPACE INC](https://search.stillhousedata.com/security/43849RAA3) | — | $53.0M | 72.80% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-04-30 | $7.3B |
| 2026-01-31 | $6.9B |
| 2025-10-31 | $6.5B |
| 2025-07-31 | $6.0B |
| 2025-04-30 | $6.0B |
| 2025-01-31 | $5.2B |
| 2024-10-31 | $5.5B |
| 2024-07-31 | $5.5B |

## More

- [Registrant: iShares U.S. ETF Trust](https://search.stillhousedata.com/registrant/1524513)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000040474.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.