IUSB holdings by issuer, coupon and maturity
IUSB holds 18,110 positions from 3,459 issuers in its SEC Form N-PORT for the period ended 2026-07-31, filed 2026-09-25. The largest kinds are US Treasury notes and bonds at 39.5% of net assets, corporate debt at 31.4% and agency mortgage-backed securities at 20.2%. Its debt averages a 4.11% coupon and 11.8 years to maturity, and its filing gives a duration of 5.50 years.
What does IUSB hold, from its SEC Form N-PORT for the period ended 2026-07-31?
| Kind of holding | Of net assets | Weight bar |
|---|---|---|
| US Treasury notes and bonds | 39.50% | |
| Corporate debt | 31.39% | |
| Agency mortgage-backed securities | 20.21% | |
| Foreign government debt | 5.90% | |
| Money market funds | 5.16% | |
| Other mortgage-backed securities | 0.56% | |
| Asset-backed securities | 0.29% | |
| Municipal bonds | 0.27% | |
| US agency and government-sponsored debt | 0.06% |
IUSB's holdings are from its SEC Form N-PORT for the period ended 2026-07-31, filed 2026-09-25; a newer filing replaces it when the nightly read of EDGAR finds one. Its 500 largest issuers and its 200 largest lines are in the fund's JSON file.
https://tickerinside.com/api/v1/fund/iusb.jsonhttps://tickerinside.com/api/v1/fund/iusb.csv=IMPORTDATA("https://tickerinside.com/api/v1/fund/iusb.csv")If your sheet uses a decimal comma: =IMPORTDATA("https://tickerinside.com/api/v1/fund/iusb.csv"; ","; "en_US")curl -s https://tickerinside.com/api/v1/fund/iusb.jsonWhich issuers does IUSB hold the most of?
The largest issuer is United States Treasury at 39.50% of net assets in 289 lines, then Fannie Mae at 10.11% and Freddie Mac at 5.71%; the ten largest of its 3,459 issuers make up 62.3%.
| Rank | Issuer | Of net assets | Lines | Weight bar |
|---|---|---|---|---|
| 1 | United States Treasury | 39.50% | 289 | |
| 2 | Fannie Mae | 10.11% | 893 | |
| 3 | Freddie Mac | 5.71% | 641 | |
| 4 | Ginnie Mae | 4.59% | 309 | |
| 5 | JPMorgan Chase & Co | 0.50% | 72 | |
| 6 | Bank of America Corp | 0.47% | 60 | |
| 7 | Morgan Stanley | 0.43% | 61 | |
| 8 | Goldman Sachs Group Inc/The | 0.41% | 50 | |
| 9 | Wells Fargo & Co | 0.32% | 41 | |
| 10 | Amazon.com Inc | 0.27% | 43 | |
| 11 | International Bank for Reconstruction & Development | 0.27% | 29 | |
| 12 | Citigroup Inc | 0.26% | 46 | |
| 13 | United Mexican States | 0.25% | 39 | |
| 14 | Oracle Corp | 0.24% | 52 | |
| 15 | Government of Saudi Arabia | 0.23% | 29 | |
| 16 | HSBC Holdings PLC | 0.23% | 45 | |
| 17 | AT&T Inc | 0.22% | 57 | |
| 18 | Verizon Communications Inc | 0.21% | 50 | |
| 19 | Government of Turkey | 0.19% | 31 | |
| 20 | Meta Platforms Inc | 0.18% | 26 |
When does IUSB's debt mature?
The most weight, 24.1% of net assets, matures in 20 to 30 years; the average maturity is 11.8 years.
| Time to maturity | Of net assets | Weight bar |
|---|---|---|
| under 1 year | 0.53% | |
| 1 to 3 years | 22.00% | |
| 3 to 5 years | 17.95% | |
| 5 to 7 years | 10.02% | |
| 7 to 10 years | 10.19% | |
| 10 to 20 years | 9.48% | |
| 20 to 30 years | 24.13% | |
| over 30 years | 4.03% |
Where are IUSB's issuers based?
By the country of each issuer: United States 86.1% of net assets, Canada 1.2% and United Kingdom 1.0%.
| Country of the issuer | Of net assets | Weight bar |
|---|---|---|
| United States | 86.08% | |
| Canada | 1.21% | |
| United Kingdom | 1.01% | |
| Cayman Islands | 0.83% | |
| Japan | 0.65% | |
| Mexico | 0.54% | |
| France | 0.54% | |
| Netherlands | 0.46% | |
| United Arab Emirates | 0.35% | |
| Australia | 0.35% |
IUSB's largest lines
| Issuer | Kind | Coupon | Maturity | Of net assets | Pools |
|---|---|---|---|---|---|
| BlackRock Liquidity Funds | Money market funds | none | none | 4.36% | 1 |
| BlackRock Funds III | Money market funds | none | none | 0.80% | 2 |
| Fannie Mae | Agency mortgage-backed securities | 2% | 2051 | 0.80% | 40 |
| Fannie Mae | Agency mortgage-backed securities | 2.5% | 2052 | 0.59% | 27 |
| Fannie Mae | Agency mortgage-backed securities | 5% | 2056 | 0.55% | 10 |
| Fannie Mae | Agency mortgage-backed securities | 2.5% | 2051 | 0.51% | 34 |
| Fannie Mae | Agency mortgage-backed securities | 3% | 2052 | 0.46% | 19 |
| Fannie Mae | Agency mortgage-backed securities | 2% | 2052 | 0.46% | 14 |
| Freddie Mac | Agency mortgage-backed securities | 2% | 2051 | 0.45% | 26 |
| Fannie Mae | Agency mortgage-backed securities | 2% | 2056 | 0.41% | 1 |
| Fannie Mae | Agency mortgage-backed securities | 2% | 2050 | 0.39% | 9 |
| United States Treasury | US Treasury notes and bonds | 4.375% | 2029-12-31 | 0.38% | 1 |
| United States Treasury | US Treasury notes and bonds | 4.375% | 2036-05-15 | 0.37% | 1 |
| United States Treasury | US Treasury notes and bonds | 4% | 2034-02-15 | 0.36% | 1 |
| Ginnie Mae | Agency mortgage-backed securities | 2.5% | 2051 | 0.35% | 9 |
| United States Treasury | US Treasury notes and bonds | 4.625% | 2035-02-15 | 0.35% | 1 |
| United States Treasury | US Treasury notes and bonds | 4.25% | 2035-08-15 | 0.34% | 1 |
| United States Treasury | US Treasury notes and bonds | 4.375% | 2034-05-15 | 0.34% | 1 |
| Ginnie Mae | Agency mortgage-backed securities | 2% | 2051 | 0.34% | 5 |
| United States Treasury | US Treasury notes and bonds | 4.25% | 2034-11-15 | 0.34% | 1 |
| United States Treasury | US Treasury notes and bonds | 4.25% | 2035-05-15 | 0.33% | 1 |
| United States Treasury | US Treasury notes and bonds | 4.125% | 2036-02-15 | 0.33% | 1 |
| United States Treasury | US Treasury notes and bonds | 3.875% | 2034-08-15 | 0.33% | 1 |
| United States Treasury | US Treasury notes and bonds | 2.75% | 2032-08-15 | 0.33% | 1 |
| United States Treasury | US Treasury notes and bonds | 4% | 2035-11-15 | 0.32% | 1 |
The 25 largest lines; the fund's JSON file lists 200. How mortgage pools are summed.
Which bond ETFs with a page here share IUSB's issuers?
Ranked by the lower of its issuer and maturity overlaps, AGG shares the most with IUSB: 81.5% of their weight by issuer, in 607 issuers both hold, and 92.3% by time to maturity. The issuer figure counts the 1,000 largest of IUSB's 3,459 issuers, 91.7% of its net assets, and the 1,000 largest of AGG's 1,355 issuers, 98.0% of its net assets.
| ETF | Overlap by issuer | By time to maturity | Issuers in both | Average maturity |
|---|---|---|---|---|
| AGG | 81.5% | 92.3% | 607 | 12.5 years |
| BND | 78.9% | 93.9% | 590 | 11.7 years |
| BSV | 57.5% | 41.9% | 534 | 2.9 years |
| GOVT | 39.5% | 79.0% | 1 | 7.4 years |
| SCHP | 39.5% | 74.4% | 1 | 7.2 years |
| TIP | 39.5% | 74.2% | 1 | 6.9 years |
| VTIP | 39.5% | 40.5% | 1 | 2.4 years |
| VGIT | 39.5% | 38.9% | 1 | 5.5 years |
| TLT | 39.5% | 25.5% | 1 | 26.0 years |
| BIV | 59.9% | 24.2% | 526 | 7.5 years |
| SHY | 39.5% | 22.5% | 1 | 1.9 years |
| VGSH | 39.5% | 22.5% | 1 | 1.9 years |
From each fund's SEC Form N-PORT: AGG, SHY, TLT, VGIT and VGSH for the period ended 2026-05-31, BIV, BND, BSV, SCHP and VTIP 2026-06-30, GOVT, IUSB and TIP 2026-07-31. The issuer figures count the 1,000 largest of IUSB's 3,459 issuers, 91.7% of its net assets, and the 1,000 largest of AGG's 1,355 issuers, 98.0% of its net assets, and the 1,000 largest of BND's 1,778 issuers, 97.9% of its net assets. How the two overlaps are measured.
Where to go next
- JAAA, Janus Henderson AAA CLO ETF
- JPST, JPMorgan Ultra-Short Income ETF
- LQD, iShares iBoxx Investment Grade Corporate Bond ETF
- MBB, iShares MBS ETF
- The US ETFs with a page here
Holdings from IUSB's SEC Form N-PORT for the period ended 2026-07-31, filed 2026-09-25. How these figures are read. Measurements, not investment advice.
Cite this page
TickerInside, iShares Core Universal USD Bond ETF (IUSB), holdings by issuer from SEC Form N-PORT for the period ended 2026-07-31, filed 2026-09-25, https://tickerinside.com/etf/iusb/, CC BY 4.0
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