IUSB is a Bond ETF from iShares holding 17783 positions as of Apr 30, 2026, with $43.2B in assets and a 0.06% net expense ratio. Its largest positions are U.S. Treasury Notes (0.4%), U.S. Treasury Notes (0.4%) and U.S. Treasury Notes (0.4%); the top 10 holdings account for 3.6% of the portfolio. It yields 4.28% on a trailing-12-month basis.
- Issuer
- iShares
- Holdings
- 177833.8% cash, collateral & derivative positions excluded
- Net Assets
- $43.2BETF assets as of 2026-08-10
- Expense Ratio
- 0.06%per latest SEC prospectus filing
- TTM Yield
- 4.28%trailing 12-month distributions
Performance
- 1M
- -0.2%
- YTD
- +0.3%
- 1Y
- +2.8%
- 3Y (ann.)
- +4.7%
- 5Y (ann.)
- +0.2%
- 10Y (ann.)
- +1.8%
A $10,000 investment 10 years ago would be worth $11,930 today at the 10Y annualized rate. This is a backward-looking illustration, not a forecast. Project its future growth →
Total returns including dividends as of 2026-08-07. 3Y/5Y/10Y annualized. Past performance does not predict future results.
Top 25 Holdings
| # | Holding | Weight |
|---|---|---|
| 1 | U.S. Treasury Notes | 0.37% |
| 2 | U.S. Treasury Notes | 0.37% |
| 3 | U.S. Treasury Notes | 0.37% |
| 4 | U.S. Treasury Notes | 0.37% |
| 5 | U.S. Treasury Notes | 0.36% |
| 6 | U.S. Treasury Notes | 0.36% |
| 7 | U.S. Treasury Notes | 0.36% |
| 8 | U.S. Treasury Notes | 0.35% |
| 9 | U.S. Treasury Notes | 0.34% |
| 10 | U.S. Treasury Notes | 0.34% |
| 11 | U.S. Treasury Notes | 0.33% |
| 12 | U.S. Treasury Notes | 0.33% |
| 13 | U.S. Treasury Notes | 0.33% |
| 14 | U.S. Treasury Notes | 0.32% |
| 15 | Uniform Mortgage-Backed Securities | 0.32% |
| 16 | U.S. Treasury Notes | 0.31% |
| 17 | U.S. Treasury Notes | 0.31% |
| 18 | U.S. Treasury Notes | 0.31% |
| 19 | U.S. Treasury Notes | 0.30% |
| 20 | U.S. Treasury Notes | 0.29% |
| 21 | U.S. Treasury Notes | 0.29% |
| 22 | U.S. Treasury Notes | 0.29% |
| 23 | U.S. Treasury Notes | 0.28% |
| 24 | U.S. Treasury Notes | 0.28% |
| 25 | U.S. Treasury Notes | 0.27% |
Showing the top 25 of 17783 holdings. See the full IUSB holdings list →
IUSB alternatives
The closest Bond ETFs to IUSB by portfolio overlap — the share of weight both funds hold in the same securities.
| Fund | Overlap | Expense | Assets | |
|---|---|---|---|---|
 AGGiShares Core U.S. Aggregate Bond ETF | 70% | 0.03%cheaper | $137.7B | Compare → |
 SCHZSchwab U.S. Aggregate Bond ETF | 61% | 0.03%cheaper | $10.5B | Compare → |
 BNDVanguard Total Bond Market Index Fund | 58% | 0.03%cheaper | $161.4B | Compare → |
 EAGGiShares ESG Aware U.S. Aggregate Bond ETF | 55% | 0.1%pricier | $5.0B | Compare → |
 GVIiShares Intermediate Government/Credit Bond ETF | 46% | 0.2%pricier | $3.8B | Compare → |
 BKAGBNY Mellon Core Bond ETF | 44% | 0%cheaper | $2.2B | Compare → |
 ISTBiShares Core 1-5 Year USD Bond ETF | 37% | 0.06% | $5.1B | Compare → |
 BSVVanguard Short-term Bond Index Fund | 30% | 0.03%cheaper | $45.6B | Compare → |
Frequently Asked Questions
What is IUSB's expense ratio?
IUSB has a net expense ratio of 0.06%, per its latest SEC prospectus filing. That works out to about $6 a year on a $10,000 investment.
How many holdings does IUSB have?
IUSB held 17783 positions as of Apr 30, 2026, per its latest official holdings data. Cash, collateral and derivative positions (3.8% of portfolio weight) are excluded from that count.
What are IUSB's top 10 holdings?
IUSB's largest positions are U.S. Treasury Notes (0.4%), U.S. Treasury Notes (0.4%), U.S. Treasury Notes (0.4%), U.S. Treasury Notes (0.4%), U.S. Treasury Notes (0.4%), U.S. Treasury Notes (0.4%), U.S. Treasury Notes (0.4%), U.S. Treasury Notes (0.3%), U.S. Treasury Notes (0.3%), U.S. Treasury Notes (0.3%). Together they account for 3.6% of the portfolio.
What is IUSB's dividend yield?
IUSB yields 4.28% based on its trailing 12-month distributions, as of Aug 7, 2026.
How big is IUSB?
IUSB has $43.2B in assets as of Aug 10, 2026.
What are good alternatives to IUSB?
By portfolio overlap, the closest Bond ETFs to IUSB are AGG (70% overlap), SCHZ (61% overlap), BND (58% overlap). Overlap measures the share of portfolio weight both funds hold in the same securities.