GOVT vs ISTB: Holdings Overlap
GOVTiShares U.S. Treasury Bond ETF
iShares · 223 holdings · $43.7B · as of 2026-04-30
ISTBiShares Core 1-5 Year USD Bond ETF
iShares · 7059 holdings · $5.1B · as of 2026-04-30
How similar are GOVT and ISTB?
iShares U.S. Treasury Bond ETF (GOVT, by iShares) holds 223 positions; iShares Core 1-5 Year USD Bond ETF (ISTB, by iShares) holds 7059. They have 90 holdings in common, and by portfolio weight the two funds are 28.6% identical. In practical terms the pair is lightly overlapping, with most of each portfolio distinct.
- Overlap by Weight
- 28.6%Sum of the smaller weight of each shared holding
- Shared Holdings
- 90GOVT holds 223 · ISTB holds 7059
- Weight in Shared Holdings
- GOVT 46%·ISTB 38%Share of each fund's weight in stocks both funds own
Based on each fund's latest official holdings. How is this calculated?
What makes each fund different
Only in GOVT
133 of 223 positions (52.9% of the fund) are not held by ISTB. Showing the top 30 by weight.
- U.S. Treasury Notes5.25%
- U.S. Treasury Notes2.92%
- U.S. Treasury Bonds1.55%
- U.S. Treasury Bonds1.51%
- U.S. Treasury Bonds1.49%
- U.S. Treasury Bonds1.39%
Only in ISTB
6969 of 7059 positions (60.5% of the fund) are not held by GOVT. Showing the top 30 by weight.
- U.S. Treasury Notes0.86%
- U.S. Treasury Notes0.67%
- U.S. Treasury Notes0.59%
- U.S. Treasury Notes0.57%
- U.S. Treasury Notes0.55%
- U.S. Treasury Notes0.54%
Performance
| Fund | 1M | YTD | 1Y | 3Y (ann.) | 5Y (ann.) | 10Y (ann.) | Yield |
|---|---|---|---|---|---|---|---|
| GOVT | -0.2% | -0.3% | +1.6% | +3.3% | -0.8% | +0.7% | 3.64% |
| ISTB | +0.3% | +1.0% | +3.0% | +5.0% | +1.9% | +2.3% | 4.27% |
Total returns including dividends, from adjusted daily closes as of 2026-08-07. 3Y/5Y/10Y are annualized. Yield is trailing-12-month distributions over the last close. Past performance does not predict future results.
Project the growth of $10,000 in GOVT vs ISTB →
Shared Holdings(90)
The top 10 shared positions account for 23% of the overlap, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes.
| U.S. Treasury Notes | 0.94% | 0.99% | 0.94% |
|---|---|---|---|
| U.S. Treasury Notes | 1.01% | 0.83% | 0.83% |
| U.S. Treasury Notes | 0.77% | 0.70% | 0.70% |
| U.S. Treasury Notes | 0.69% | 0.63% | 0.63% |
| U.S. Treasury Notes | 0.66% | 0.62% | 0.62% |
| U.S. Treasury Notes | 0.61% | 0.96% | 0.61% |
| U.S. Treasury Notes | 0.62% | 0.60% | 0.60% |
| U.S. Treasury Notes | 0.59% | 0.91% | 0.59% |
| U.S. Treasury Notes | 0.56% | 0.81% | 0.56% |
| U.S. Treasury Notes | 0.56% | 0.64% | 0.56% |
| U.S. Treasury Notes | 0.56% | 0.80% | 0.56% |
| U.S. Treasury Notes | 0.55% | 0.68% | 0.55% |
| U.S. Treasury Notes | 0.87% | 0.55% | 0.55% |
| U.S. Treasury Notes | 0.54% | 0.56% | 0.54% |
| U.S. Treasury Notes | 0.56% | 0.53% | 0.53% |
| U.S. Treasury Notes | 0.52% | 0.64% | 0.52% |
| U.S. Treasury Notes | 0.52% | 0.98% | 0.52% |
| U.S. Treasury Notes | 1.59% | 0.52% | 0.52% |
| U.S. Treasury Notes | 0.47% | 0.50% | 0.47% |
| U.S. Treasury Notes | 0.46% | 0.58% | 0.46% |
| U.S. Treasury Notes | 0.46% | 0.73% | 0.46% |
| U.S. Treasury Notes | 0.62% | 0.46% | 0.46% |
| U.S. Treasury Notes | 2.06% | 0.45% | 0.45% |
| U.S. Treasury Notes | 0.44% | 0.54% | 0.44% |
| U.S. Treasury Notes | 0.44% | 0.89% | 0.44% |
Frequently Asked Questions
How much do GOVT and ISTB overlap?
GOVT and ISTB overlap by 28.6% of portfolio weight. They share 90 holdings (GOVT holds 223 positions and ISTB holds 7059), based on each fund's latest SEC-reported holdings.
Is it redundant to own both GOVT and ISTB?
The two portfolios are 28.6% identical by weight. Owning both is not redundant. Most of each portfolio is distinct, so the funds can serve different roles.
What are the biggest shared holdings of GOVT and ISTB?
The largest positions held by both funds are U.S. Treasury Notes, U.S. Treasury Notes, U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Notes. Together the top 10 shared positions account for 23% of the total overlap.
What does GOVT own that ISTB doesn't?
133 positions (52.9% of GOVT) are unique to GOVT, led by U.S. Treasury Notes, U.S. Treasury Notes and U.S. Treasury Bonds. In the other direction, 6969 positions (60.5% of ISTB) are unique to ISTB.