iShares Core Universal USD Bond ETF holds 18,110 positions and $43.0B in net assets as of Jul 31, 2026. The largest: United States of America 39.5%, Federal National Mortgage Association 7.8%, Federal Home Loan Mortgage Corp. 5.7%, Government National Mortgage Association 4.6%, BlackRock Liquidity Funds 4.4%.

What is the expense ratio of IUSB?

IUSB costs 0.06% a year, from its prospectus.

IUSBiShares Core Universal USD Bond ETF

ETF · iSHARES TRUST

$44.65close Nov 11, 2026

The fund

Holdings as of Jul 31, 2026, filed with the SEC.

$43.0B

net assets, all share classes

0.06%

yearly cost, from the prospectus

18,110

positions on file

Growth of $100

Total return with dividends reinvested, month by month since August 2019.

$100$110

20192026

+3.0%

last 12 months

+4.2%

a year, over 3 years

-0.0%

a year, over 5 years

Largest holdings

The top 10 issuers of 18,110 positions, by share of the fund.

United States of AmericaBonds: 39.5%
Federal National Mortgage AssociationMortgage-backed: 7.8%
Federal Home Loan Mortgage Corp.Mortgage-backed: 5.7%
Government National Mortgage AssociationMortgage-backed: 4.6%
BlackRock Liquidity FundsCash and short-term: 4.4%
Federal National Mortgage Association or Federal Home Loan Mortgage Corp.Mortgage-backed: 2.2%
BlackRock Funds IIICash and short-term: 0.8%
JPMorgan Chase & Co.Bonds: 0.5%
Bank of America Corp.Bonds: 0.5%
Morgan StanleyBonds: 0.4%

Countries

Where the holdings are, by share of the fund.

United States91.2%
Canada1.2%
United Kingdom1.0%
Cayman Islands0.8%
Japan0.7%
Mexico0.5%
France0.5%
Netherlands0.5%
United Arab Emirates0.4%
Australia0.3%

What it holds

By kind of asset.

Bonds77.1%
Mortgage-backed20.9%
Cash and short-term5.2%
Asset-backed0.3%

From the fund’s Form N-PORT for July 2026 (filed Sep 25, 2026) and its prospectus, via the SEC’s public data sets. Shares of net assets can sum above 100% where a fund holds cash collateral or derivatives.