iShares U.S. Treasury Bond ETF
U.S. bond index ETF · tracks ICE U.S. Treasury Core Bond Index
As of its 2026 Q2 report, iShares U.S. Treasury Bond ETF held 224 positions with $41.03B in net assets. Its ten largest holdings made up 21.7% of the fund. The GOVT share class costs 0.05% a year. Over the 12 months to May 2026, GOVT returned 3.7%, with dividends reinvested. In 2026 Q3 it added 14 new positions and exited 23.
The iShares U.S. Treasury Bond ETF (the Fund ) seeks to track the investment results of an index composed of U.S. Treasury bonds.
The fund tracks the ICE U.S. Treasury Core Bond Index using representative sampling, holding a sample of Treasury securities with maturities over one year that collectively replicate the index's investment profile rather than holding all constituents. Because the fund does not hold all index components, its returns may diverge from the index. The fund may use futures, options and swaps contracts, up to 10% of assets, to help track the index.
What you own
| Company | Weight | Value | Shares |
|---|---|---|---|
United States of America 1.38% · due 2031-11-15 | 5.25% | $2.15B | — |
United States of America 2.63% · due 2029-02-15 | 2.92% | $1.20B | — |
United States of America 2.75% · due 2028-02-15 | 2.60% | $1.06B | — |
United States of America 3.13% · due 2028-11-15 | 2.06% | $846.10M | — |
United States of America 2.88% · due 2028-05-15 | 1.59% | $654.38M | — |
United States of America 1.88% · due 2051-02-15 | 1.55% | $637.46M | — |
United States of America 2.50% · due 2046-05-15 | 1.51% | $620.71M | — |
United States of America 2.75% · due 2042-11-15 | 1.49% | $610.75M | — |
United States of America 3.75% · due 2043-11-15 | 1.39% | $570.94M | — |
United States of America 6.13% · due 2027-11-15 | 1.37% | $563.29M | — |
The 200 largest of 224 holdings, with the share counts as filed, open with a free account.
What the fund is made of
Percentages are of fund net assets. Rounding, liabilities and short positions can make totals differ from 100%.
| Bonds | 98.78% |
| Cash & short-term | 0.51% |
How it has done
GOVT share class · total returns with dividends reinvested
Volatility over the last 12 months: 3.23%. Past returns are a record, not a forecast.
Jun 2026 and Jul 2026 have been filed since the trailing figures were struck, so they are not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.
Fees & fund details
iShares U.S. Treasury Bond ETF is a U.S. bond index ETF that tracks the ICE U.S. Treasury Core Bond Index.
- Asset class
- Bonds
- Region
- United States
- Management
- Index (passive)
- Fund type
- ETF
- Rate sensitivity
- Intermediate duration
- Expense ratio, by class
- 0.05%· GOVT 0.05%
- Portfolio turnover
- 25.00% a year · as of 2026 Q1
Turnover is how much of the portfolio was replaced in a year.
Classified from what the fund holds, not from its name · 2026 Q2. The summary is a paraphrase of the prospectus; the objective is verbatim.
What changed this quarter
Positions that entered or left the fund since its previous filing. Positions that were only resized are not listed.
14 new· the largest 1
23 exited· the largest 1
Debt profile
What this fund holds — value-weighted across its bond and securitized long positions · as of 2026-04-30
Share of the fund's debt by how its coupon behaves — the fact that decides whether a rate move reaches this portfolio at all.
| Fixed rate | 99.8% |
| Zero-coupon or unclassified | 0.2% |
Share of the fund's debt value in each maturity band, shortest first.
| <1y | 1.3% |
| 1-3y | 33.0% |
| 3-5y | 22.8% |
| 5-10y | 22.2% |
| 10y+ | 20.8% |
Based on what filers reported; a filer that never reported a flag also reads as none.
Risk profile
Interest-rate and credit-spread sensitivity, both in years · as of 2026Q2
Most of this fund’s sensitivity is to interest rates, with credit spreads carrying a small fraction as much.
Where the loss would come from. The two shocks are the same size, so this is the balance of the fund's two sensitivities rather than a bet on one moving more.
| Interest rates | 100% |
| Credit spreads | 0% |
Filers report the impact of a 0.01% move only, so the total is our own scaling of that one number and overstates the loss on most bonds — read it as approximate, never as precise. The two sensitivities overlap rather than add up: they measure the same positions against different shocks, which is why the durations above are shown side by side and never summed.
Share of the fund's spread duration carried by each credit tier.
| Investment grade | +0.00 yr |
Share of duration at each point, shortest first. A positive figure loses value when spreads widen; a negative one offsets — a credit hedge.
| 3 mo | 0.01 yr | 0% |
| 1 yr | 0.50 yr | 9% |
| 5 yr | 2.23 yr | 40% |
| 10 yr | 1.27 yr | 23% |
| 30 yr | 1.63 yr | 29% |
| 3 mo | 0.00 yr | 100% |
The two bands measure the same positions against different shocks and do not add — a Treasury carries rate duration and no spread duration, a floating-rate credit the reverse. Rate tenors are also summed across every currency the fund discloses.
Show the numbers
| Tenor | Rate yrs | IG yrs | HY yrs | IG $/bp | HY $/bp |
|---|---|---|---|---|---|
| 3 mo | +0.01 | +0.00 | +0.00 | $8 | $0 |
| 1 yr | +0.50 | +0.00 | +0.00 | $0 | $0 |
| 5 yr | +2.23 | +0.00 | +0.00 | $0 | $0 |
| 10 yr | +1.27 | +0.00 | +0.00 | $0 | $0 |
| 30 yr | +1.63 | +0.00 | +0.00 | $0 | $0 |
Dollar change per 1bp of spread movement, as filed and sign-anchored. A blank cell was not filed; a zero was.
A newer credit-spread reading (2026Q3) is on file. This page holds one quarter across every figure on it, so that one appears here next quarter.
Understand how this fund fits with the rest.
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