iShares Core Total USD Bond Market ETF (IUSB) Holdings List

$44.09 -0.10 (-0.23%)

As of 10:57 AM Eastern

What stocks does IUSB hold?

The iShares Core Total USD Bond Market ETF (IUSB) has 18,244 holdings, with BLK Liquidity Temp Cash Inst #21, TREASURY NOTE - 4.63 2035-02-15, and TREASURY NOTE - 4.0 2035-11-15 among its largest positions. The top 25 IUSB holdings ordered by weight make up 13.45% of the total fund. IUSB is a fixed income fund in the broad debt category that invests in investments, focused on broad debt strategies within the North America region. This page includes a complete IUSB stock holdings list ranked by weight, along with a full breakdown of sector, geographic, industry, and currency exposure.

Top 25 IUSB Holdings

Rank	Company	Current Price	Weight	Shares Held
1	BLK Liquidity Temp Cash Inst #21	N/A	5.18%	2,504,514,007
2	TREASURY NOTE - 4.63 2035-02-15	N/A	0.50%	250,566,000
3	TREASURY NOTE - 4.0 2035-11-15	N/A	0.42%	221,794,000
4	TREASURY NOTE - 4.25 2035-08-15	N/A	0.42%	214,939,000
5	TREASURY NOTE - 1.88 2032-02-15	N/A	0.39%	221,589,000
6	TREASURY NOTE - 4.13 2031-05-31	N/A	0.38%	187,608,000
7	TREASURY NOTE (2OLD) - 4.13 2036-02-15	N/A	0.36%	189,364,000
8	UMBS 15YR TBA(REG B) - 2.0 2026-10-15	N/A	0.36%	195,747,903
9	TREASURY NOTE (OLD) - 4.13 2028-08-31	N/A	0.34%	166,482,000
10	TREASURY NOTE - 1.25 2028-09-30	N/A	0.34%	173,901,600
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11	TREASURY NOTE - 4.88 2028-10-31	N/A	0.33%	156,880,000
12	TREASURY NOTE - 4.38 2029-12-31	N/A	0.33%	161,098,000
13	TREASURY NOTE - 4.63 2028-09-30	N/A	0.33%	160,518,000
14	TREASURY NOTE - 4.25 2034-11-15	N/A	0.33%	167,342,000
15	TREASURY NOTE - 4.25 2035-05-15	N/A	0.33%	166,666,000
16	TREASURY NOTE (OLD) - 4.38 2036-05-15	N/A	0.33%	166,129,000
17	TREASURY NOTE - 4.13 2031-06-30	N/A	0.32%	159,339,000
18	TREASURY NOTE - 4.0 2029-07-31	N/A	0.32%	157,319,700
19	TREASURY NOTE - 3.88 2034-08-15	N/A	0.32%	167,217,000
20	TREASURY NOTE - 1.38 2031-11-15	N/A	0.32%	182,737,000
21	TREASURY NOTE - 4.0 2034-02-15	N/A	0.31%	160,867,000
22	TREASURY NOTE - 4.38 2034-05-15	N/A	0.31%	155,381,000
23	TREASURY NOTE - 3.5 2029-09-30	N/A	0.31%	154,100,000
24	UMBS 30YR TBA(REG A) - 2.0 2026-11-12	N/A	0.29%	190,800,000
25	TREASURY NOTE - 2.75 2032-08-15	N/A	0.28%	155,135,000

IUSB Geographic Exposure

IUSB's largest geographic exposure is United States at 97.9%, followed by United Kingdom at 0.1%.

United States
97.9%
United Kingdom
0.1%
QQ
0.1%
Canada
0.1%
Germany
0.1%

IUSB Currency Exposure

IUSB is predominantly exposed to USD at 100.0%, followed by EUR at 0.0%.

USD
100.0%

IUSB Sector Exposure

IUSB's largest sector exposure is Financials at 16.9%, followed by Government at 2.7%.

Financials
16.9%
Government
2.7%
Utilities
0.7%
Energy
0.7%
Health Care
0.6%
Industrials
0.6%
Communications
0.5%
Consumer Discretionary
0.4%
Consumer Staples
0.4%
Technology
0.3%
Other
0.6%

IUSB Industry Exposure

IUSB's largest industry exposure is Thrifts & Mortgage Finance at 15.2%, followed by Banks at 0.6%.

Thrifts & Mortgage Finance
15.2%
Banks
0.6%
Oil, Gas & Consumable Fuels
0.5%
Utilities
0.5%
Capital Markets
0.3%
Diversified Financial Services
0.3%
Diversified Telecommunication Services
0.3%
Biotechnology
0.3%
Insurance
0.2%
Specialty Retail
0.2%
Other
2.1%

IUSB Sub-Industry Exposure

IUSB's largest sub-industry exposure is Thrifts & Mortgage Finance at 15.3%, followed by Diversified Banks at 0.5%.

Thrifts & Mortgage Finance
15.3%
Diversified Banks
0.5%
Electric Utilities
0.3%
Investment Banking & Brokerage
0.3%
Oil & Gas Storage & Transportation
0.3%
Integrated Telecommunication Services
0.2%
REIT
0.2%
Biotechnology
0.1%
Aerospace & Defense
0.1%
Multi-Utilities
0.1%
Other
2.1%

IUSB Coupon Exposure

IUSB's largest coupon exposure is 4-6 at 49.0%, followed by 2-4 at 38.6%.

4-6
49.0%
2-4
38.6%
6-8
8.7%
0-2
2.0%
8-10
1.4%
10-15
0.2%

IUSB Maturity Exposure

IUSB's largest maturity exposure is 5-10 at 25.4%, followed by 20-30 at 21.9%.

5-10
25.4%
20-30
21.9%
3-5
19.4%
1-3
14.1%
10-15
5.6%
15-20
5.2%
0-1
4.1%
30+
3.6%

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MarketBeat tracks iShares Core Total USD Bond Market ETF holdings and portfolio composition, last updated on 10/9/2026.

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iShares Core Total USD Bond Market ETF (IUSB) Holdings List