ETF Trace

Fund report

US-listed · United States

IUSB

Seeks to track the investment results of an index composed of U.S. dollar-denominated bonds that are rated either investment-grade or high yield.
iShares Core Universal USD Bond ETF
US46434V6130 · 0BYQ · BlackRock (iShares)

18,244 holdings as of 2026-10-12 · top 10 = 8.7% · TER 0.06%

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Concentration
Well diversifiedtop 10 = 8.7%
diversifiedconcentrated
GROWTH · PRICE DEVELOPMENTrebased to 0%
Holdings
18,244
as of 2026-10-12
Top 10
8.7%
TER
0.06%
cheaper than 91% of peers
Net assets
US$48.8B
reported in USD
Largest
5.2%
P / E
–
Sections
Holdings as of 2026-10-12.
01Overview
the fund's regulatory facts
Fund currency
USD
Domicile
United States
Volatility 1Y
4.1%
Tracked index
BBG U.S. Universal Index (USD)
How it tracks
Index, sampling
Lends its stock
Yes
02Performance
market price return · as of 2026-10-27
1M
+0.9%
3M
-1.9%
6M
-3.3%
YTD
-3.8%
1Y
-4.9%
Trackingfund minus BBG U.S. Universal Index (USD) · annualised
1Y return gap
-0.07 pp/yr
3Y return gap
-0.03 pp/yr
5Y return gap
-0.02 pp/yr
3Y tracking error
0.14%

A positive return gap means the fund finished ahead of the index over that window. The 3Y tracking error shows how variable that monthly gap was; lower means steadier tracking. MethodologyReturn gap and tracking errorReturn gap is the fund's return minus its index over the same months, converted to a yearly rate. Tracking error is the annualised standard deviation of those monthly fund-minus-index returns. Both lines come from the manager's own chart, in the same currency and the exact index variant the fund tracks. We use month-end values so different intraday valuation times are not mistaken for tracking error.. Not investment advice.

03Holdings
50 largest · as of 2026-10-12
#CompanyIdentifierWeight
1BlackRock Liquidity Funds USTMCXX
5.2
2United States Treasury UST
0.5
3United States Treasury UST
0.4
4United States Treasury UST
0.4
5United States Treasury UST
0.4
6TREASURY NOTE UST
0.4
7United States Treasury Note/Bond UST
0.4
8FNMA TBA 2.0% NOV 15YR USUM15
0.4
9Fannie Mae or Freddie Mac 5.5 11/15/2032 USFNCL
0.3
10TREASURY NOTE (OTR) USTNOTE
0.3
11United States Treasury UST
0.3
12United States Treasury UST
0.3
13TREASURY NOTE UST
0.3
14United States Treasury UST
0.3
15United States Treasury UST
0.3
16United States Treasury UST
0.3
17United States Treasury UST
0.3
18US TREASURY N/B 4.125 06/30/2031 UST
0.3
19United States Treasury UST
0.3
20United States Treasury UST
0.3
21United States Treasury UST
0.3
22UMBS 30YR 2.0 MBS-TBA 11/26 USUM30
0.3
23United States Treasury UST
0.3
24United States Treasury UST
0.3
25United States Treasury USUS91282CLN91
0.3
26United States Treasury UST
0.3
27United States Treasury UST
0.3
28United States Treasury UST
0.3
29UMBS 30YR 2.5 MBS-TBA 11/26 USUM30
0.3
30United States Treasury UST
0.3
31United States Treasury UST
0.3
32TREASURY NOTE (OTR) UST
0.3
33United States Treasury USTNOTE
0.3
34United States Treasury UST
0.3
35US TSY N/B 4% 31/05/28 UST
0.3
36United States Treasury UST
0.3
37United States Treasury UST
0.3
38United States Treasury UST
0.3
39United States Treasury UST
0.3
40United States Treasury UST
0.3
41United States Treasury UST
0.2
42United States Treasury UST
0.2
43TREASURY NOTE UST
0.2
44TREASURY NOTE UST
0.2
45United States Treasury UST
0.2
46United States Treasury UST
0.2
47United States Treasury UST
0.2
48United States Treasury UST
0.2
49United States Treasury UST
0.2
50United States Treasury UST
0.2
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04Exposure
Bonds 94.3%Cash 5.0%Other 0.5%
By sector
Financial Services0.0%
Consumer Cyclical0.0%
Utilities0.0%
Industrials0.0%
By country
USUnited States91.4%
CACanada1.3%
GBUnited Kingdom1.0%
SUPRANATIONALSUPRANATIONAL0.9%
JPJapan0.6%
SASA0.6%
MXMexico0.6%
FRFrance0.5%
CurrencyUSD 92.1% EUR 1.9% CAD 1.3% GBP 1.0% JPY 0.6%
05Similar funds
funds with comparable exposure
AGG
the US aggregate index (AGG)
11,741 shared companies
70.7%compare →
BND
the US total bond market (BND)
8,892 shared companies
54.5%compare →

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