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ETF · holdings as filed 2026-07-31

What's inside ISTB?

iShares Core 1-5 Year USD Bond ETF
Holdings
7,408
positions in the fund
Top 10
9%
of fund assets
Expense ratio
0.06%
net, per year
Fund size
$5B
total net assets

Top 20 holdings

RankLogoTicker / NameWeight
1
X
XTSLABLCKRCK CASH-TRSRY-SL AGNCY
1.56%
2
BOND
US Treasury Note3.875% · Jun 2028
1.08%
3
BOND
US Treasury Note4% · Feb 2030
0.91%
4
BOND
US Treasury Note3.625% · Oct 2030
0.88%
5
BOND
US Treasury Note3.5% · Nov 2030
0.83%
6
BOND
US Treasury Note3.75% · Jan 2031
0.81%
7
BOND
US Treasury Note3.625% · Sep 2030
0.79%
8
BOND
US Treasury Note3.625% · Aug 2030
0.78%
9
BOND
US Treasury Note4% · May 2030
0.76%
10
BOND
US Treasury Note4.125% · Oct 2029
0.74%
11
BOND
US Treasury Note3.875% · Jul 2028
0.74%
12
BOND
US Treasury Note4% · Jul 2029
0.74%
13
BOND
US Treasury Note4.5% · May 2029
0.65%
14
BOND
US Treasury Note4.25% · Jun 2029
0.65%
15
BOND
US Treasury Note4.25% · Jan 2030
0.62%
16
BOND
US Treasury Note3.875% · Jun 2030
0.61%
17
BOND
US Treasury Note3.625% · Dec 2030
0.61%
18
BOND
US Treasury Note4.125% · Mar 2029
0.58%
19
BOND
US Treasury Note4% · Mar 2030
0.58%
20
BOND
US Treasury Note4.25% · Jun 2031
0.57%
Sectors tap a row to see its top 10 holdings
Top holdings — Bonds & Fixed Income
Your 10 largest positions in this sector
1
BOND
US Treasury Note3.875% · Jun 2028
1.08%
2
BOND
US Treasury Note4% · Feb 2030
0.91%
3
BOND
US Treasury Note3.625% · Oct 2030
0.88%
4
BOND
US Treasury Note3.5% · Nov 2030
0.83%
5
BOND
US Treasury Note3.75% · Jan 2031
0.81%
6
BOND
US Treasury Note3.625% · Sep 2030
0.79%
7
BOND
US Treasury Note3.625% · Aug 2030
0.78%
8
BOND
US Treasury Note4% · May 2030
0.76%
9
BOND
US Treasury Note4.125% · Oct 2029
0.74%
10
BOND
US Treasury Note3.875% · Jul 2028
0.74%
Geography tap a row to see its top 10 holdings
Top holdings — United States
Your 10 largest positions in this country
1
X
XTSLABLCKRCK CASH-TRSRY-SL AGNCY
1.56%
2
BOND
US Treasury Note3.875% · Jun 2028
1.08%
3
BOND
US Treasury Note4% · Feb 2030
0.91%
4
BOND
US Treasury Note3.625% · Oct 2030
0.88%
5
BOND
US Treasury Note3.5% · Nov 2030
0.83%
6
BOND
US Treasury Note3.75% · Jan 2031
0.81%
7
BOND
US Treasury Note3.625% · Sep 2030
0.79%
8
BOND
US Treasury Note3.625% · Aug 2030
0.78%
9
BOND
US Treasury Note4% · May 2030
0.76%
10
BOND
US Treasury Note4.125% · Oct 2029
0.74%
Geography reflects each issuer's registered business address per SEC EDGAR filings where available, falling back to the exchange or listing where no SEC filing exists — not necessarily where a company's stock is primarily listed (e.g. TSMC is classified as Taiwan even though its ADR trades on the NYSE).
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Data source: official SEC Form N-PORT filings (as of 2026-07-31); expense ratio from SEC prospectus (risk/return) filings. Fund holdings are disclosed quarterly and may reflect a 60-day reporting delay.
Informational and educational only — not investment advice.