---
ticker: "ISTB"
name: "iShares Core 1-5 Year USD Bond ETF"
url: "https://etf.net/etf/ISTB"
grade: "A"
score: 77
graded_at: "2026-10-12"
category: "Short-Term Core Bond"
category_rank: "2 of 12"
methodology: "https://etf.net/methodology"
---

# ISTB: iShares Core 1-5 Year USD Bond ETF

Grade **A**, Score 77 of 100. Rank 2 of 12 in Short-Term Core Bond.

Graded Oct 12, 2026.

## Grade pillars

| Pillar | Score | Category rank |
| --- | --- | --- |
| Cost | 89 | 2 of 12 |
| Mission | Not scored | — |
| Risk | 47 | 7 of 11 |
| Tradability | 79 | 2 of 12 |
| Holdings | 79 | 1 of 12 |
| Durability | 90 | 2 of 12 |

## Top holdings

The fund holds 7499 positions. These are the largest 30, by weight.

| # | Ticker | Name | Weight |
| --- | --- | --- | --- |
| 1 | — | BlackRock Cash Class Inst Sl Agency | 1.02% |
| 2 | — | Treasury Note 3.88% 06/15/2028 | 0.97% |
| 3 | — | Treasury Note 4.13% 06/30/2031 | 0.92% |
| 4 | — | Treasury Note 4.00% 02/28/2030 | 0.87% |
| 5 | — | Treasury Note 3.63% 10/31/2030 | 0.85% |
| 6 | — | Treasury Note (2OLD) 4.38% 07/31/2031 | 0.83% |
| 7 | — | Treasury Note 3.88% 07/15/2028 | 0.81% |
| 8 | — | Treasury Note 3.50% 11/30/2030 | 0.81% |
| 9 | — | Treasury Note 3.75% 01/31/2031 | 0.78% |
| 10 | — | Treasury Note 3.63% 09/30/2030 | 0.76% |
| 11 | — | Treasury Note 3.63% 08/31/2030 | 0.75% |
| 12 | — | Treasury Note 4.00% 05/31/2030 | 0.73% |
| 13 | — | Treasury Note 3.50% 11/15/2028 | 0.69% |
| 14 | — | Treasury Note 4.50% 05/31/2029 | 0.63% |
| 15 | — | Treasury Note 4.25% 06/30/2029 | 0.63% |
| 16 | — | Treasury Note 4.25% 01/31/2030 | 0.60% |
| 17 | — | Treasury Note 3.88% 06/30/2030 | 0.59% |
| 18 | — | Treasury Note 3.63% 12/31/2030 | 0.59% |
| 19 | — | Treasury Note 4.13% 03/31/2029 | 0.56% |
| 20 | — | Treasury Note 3.38% 11/30/2027 | 0.56% |
| 21 | — | Treasury Note 4.00% 03/31/2030 | 0.56% |
| 22 | — | Treasury Note 4.25% 06/30/2031 | 0.55% |
| 23 | — | Treasury Note 4.13% 10/31/2029 | 0.55% |
| 24 | — | Treasury Note 4.00% 07/31/2029 | 0.54% |
| 25 | — | Treasury Note 4.25% 02/28/2029 | 0.52% |
| 26 | — | Treasury Note 4.00% 05/31/2028 | 0.51% |
| 27 | — | Treasury Note 4.63% 04/30/2031 | 0.50% |
| 28 | — | Treasury Note 3.75% 08/31/2031 | 0.50% |
| 29 | — | Treasury Note 3.88% 03/15/2028 | 0.50% |
| 30 | — | Treasury Note 0.75% 01/31/2028 | 0.50% |

Source: etf.net, https://etf.net/etf/ISTB. Please cite the page URL.