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IUSB · NASDAQ · ETF

iShares Core Universal USD Bond ETF (IUSB) Price, Holdings & Fees

$533.33−0.36%−$1.91End-of-day price as of Oct 9, 2026

iShares Core Universal USD Bond ETF (IUSB) closed at $533.33 on Oct 9, 2026, down 0.36% from the previous close of $535.24.

Share price, past year

1Y +1.88%

52-week range $505.16 – $630.33. Daily closing prices.
Monthly closing prices
Last closing price of each month
DateClose
Oct 9, 2026$533.33
Sep 30, 2026$523.13
Aug 31, 2026$528.50
Jul 31, 2026$561.73
Jun 30, 2026$610.26
May 29, 2026$622.22
Apr 30, 2026$600.05
Mar 31, 2026$545.92
Feb 27, 2026$556.80
Jan 30, 2026$560.86
Dec 31, 2025$523.36
Nov 28, 2025$523.50
Oct 31, 2025$514.03

Key statistics

Expense ratio
0.06%
as of Oct 31, 2025
Net assets
$43B
as of Jul 31, 2026
Holdings
18,110
as of Jul 31, 2026
52-week range
$505.16 – $630.33

iShares Core Universal USD Bond ETF's expense ratio is 0.06%: $6.00 a year on $10,000 invested.

Holdings

iShares Core Universal USD Bond ETF held 18,110 investments worth $43.00B as of Jul 31, 2026. Its largest holding was BlackRock Liquidity Funds, at 4.36% of the fund.

iShares Core Universal USD Bond ETF largest holdings by share of net assets
#Holding% of fundValue
1BlackRock Liquidity Funds4.36%$1.88B
2BlackRock Funds III0.80%$343.93M
3Federal National Mortgage Association or Federal Home Loan Mortgage Corp.0.41%$177.94M
4United States of America0.37%$161.16M
5United States of America0.37%$157.74M
6United States of America0.36%$154.76M
7United States of America0.35%$148.92M
8United States of America0.34%$147.04M
9United States of America0.34%$146.72M
10United States of America0.34%$145.52M
11United States of America0.33%$142.26M
12United States of America0.33%$142.21M
13United States of America0.33%$141.76M
14United States of America0.33%$140.83M
15United States of America0.32%$138.75M
16Federal National Mortgage Association or Federal Home Loan Mortgage Corp.0.31%$134.33M
17United States of America0.31%$132.02M
18Federal National Mortgage Association or Federal Home Loan Mortgage Corp.0.30%$128.71M
19United States of America0.30%$127.13M
20United States of America0.30%$127.12M
21United States of America0.29%$124.45M
22United States of America0.29%$123.99M
23United States of America0.29%$123.88M
24United States of America0.29%$123.72M
25United States of America0.29%$123.61M

Top 25 of 18,110 holdings, as of Jul 31, 2026. Percentages are of the fund's net assets.

What the fund owns

iShares Core Universal USD Bond ETF holdings by asset type
Asset type% of fund
Bonds and other debt77.12%
Mortgage-backed securities20.77%
Cash and short-term investments5.16%
Other asset-backed securities0.29%
iShares Core Universal USD Bond ETF holdings by country, largest 10
Country% of fund
United States91.08%
Canada1.21%
United Kingdom1.01%
Cayman Islands0.83%
Japan0.65%
Mexico0.54%
France0.54%
Netherlands0.46%
United Arab Emirates0.35%
Australia0.35%

Shares of net assets from the fund's N-PORT report. Funds that borrow can add up to more than 100%, with borrowing (such as repurchase agreements) shown as a negative share.

Monthly total returns

Over the 3 months to Jul 31, 2026, iShares Core Universal USD Bond ETF's total return was −0.63%, as reported to the SEC.

iShares Core Universal USD Bond ETF monthly total returns
MonthTotal return
Jul 31, 2026−1.23%
Jun 30, 2026+0.27%
May 31, 2026+0.33%

The fund's own total returns as reported to the SEC (N-PORT), including reinvested distributions. Not the sample prices above.

Fund profile

Name
iShares Core Universal USD Bond ETF
Ticker
IUSB
Exchange
NASDAQ
Fund type
ETF
Trust
iSHARES TRUST
SEC series ID
S000045644
SEC CIK
0001100663
Fractional shares
Yes

Recent SEC filings

Shareholder reports and prospectuses are filed by iSHARES TRUST, the trust behind iShares Core Universal USD Bond ETF, and cover all of its funds.

Frequently asked questions

What is IUSB's price?

iShares Core Universal USD Bond ETF (IUSB) closed at $533.33 on Oct 9, 2026, down 0.36% from the previous close of $535.24.

What is IUSB's expense ratio?

iShares Core Universal USD Bond ETF's expense ratio is 0.06%: $6.00 a year on $10,000 invested.

What does IUSB hold?

iShares Core Universal USD Bond ETF held 18,110 investments worth $43.00B as of Jul 31, 2026. Its largest holding was BlackRock Liquidity Funds, at 4.36% of the fund. Its five largest holdings were BlackRock Liquidity Funds, BlackRock Funds III, Federal National Mortgage Association or Federal Home Loan Mortgage Corp., United States of America, United States of America.

How has IUSB performed?

Over the 3 months to Jul 31, 2026, iShares Core Universal USD Bond ETF's total return was −0.63%, as reported to the SEC.

Sources and methodology

Holdings, net assets and monthly returns come from the fund's N-PORT filing with the SEC, as of Jul 31, 2026 (filed Sep 25, 2026). The expense ratio is from the fund's prospectus or shareholder report, as of Oct 31, 2025. Prices are generated sample data for development. Data sources and disclosures