iShares Core 1-5 Year USD Bond ETF (ISTB) is an ETF managed by BlackRock / iShares. Its largest position is BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES (null), representing 1.08% of fund assets.
iShares Core 1-5 Year USD Bond ETF Portfolio Holdings
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- ISTB
- Type:
- ETF
- Manager:
- BlackRock / iShares
- Total Assets:
- —
- Report Date:
- Apr 30, 2026
- Filing Date:
- Jun 25, 2026
| Holding | Weight | Market Value | Shares |
|---|---|---|---|
|
-
BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES
|
1.08% | $51,185,274.49 | 51,185,274 |
|
-
BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES
|
0.85% | $40,129,027.12 | 40,116,992 |
|
-
FHLMC MULTIFAMILY STRUCTURED P
|
0.21% | $10,089,328.00 | 10,000,000 |
|
-
UMBS, TBA
|
0.20% | $9,697,306.25 | 9,954,000 |
|
-
BENCHMARK MORTGAGE TRUST
|
0.15% | $7,104,420.68 | 7,000,000 |
|
-
FNMA
|
0.13% | $6,025,539.24 | 6,724,889 |
|
-
FREDDIE MAC
|
0.13% | $5,964,647.12 | 6,326,973 |
|
-
FREDDIE MAC
|
0.12% | $5,859,904.88 | 6,343,667 |
|
-
FREDDIE MAC
|
0.11% | $5,323,560.13 | 5,775,304 |
|
-
FHLMC MULTIFAMILY STRUCTURED PASS THROUGH CERTS.
|
0.11% | $5,002,310.85 | 5,000,000 |
|
-
FHLMC POOL
|
0.10% | $4,938,559.80 | 5,512,188 |
|
-
FHLMC MULTIFAMILY STRUCTURED PASS THROUGH CERTS.
|
0.10% | $4,731,247.80 | 5,000,000 |
|
-
FREDDIE MAC
|
0.09% | $4,434,411.20 | 4,825,448 |
|
-
FREDDIE MAC
|
0.09% | $4,250,869.07 | 4,597,960 |
|
-
FREDDIE MAC
|
0.08% | $3,842,068.79 | 4,058,128 |
|
-
FREDDIE MAC
|
0.07% | $3,262,638.58 | 3,550,690 |
|
-
FHLMC MULTIFAMILY STRUCTURED PASS THROUGH CERTS.
|
0.07% | $3,219,769.10 | 3,110,000 |
|
-
AMERICAN EXPRESS CREDIT ACCOUNT MASTER TRUST
|
0.06% | $3,007,321.65 | 3,000,000 |
|
-
FREDDIE MAC
|
0.06% | $3,006,627.73 | 3,276,210 |
|
-
FHLMC MULTIFAMILY STRUCTURED PASS THROUGH CERTS.
|
0.06% | $2,967,175.05 | 3,000,000 |
|
-
FHLMC
|
0.06% | $2,886,233.04 | 3,000,000 |
|
-
FHLMC
|
0.06% | $2,791,971.23 | 2,720,000 |
|
-
FHLMC POOL
|
0.05% | $2,443,365.89 | 2,726,466 |
|
-
FREDDIE MAC
|
0.05% | $2,407,015.56 | 2,604,892 |
|
-
FREDDIE MAC
|
0.05% | $2,388,379.44 | 2,417,852 |
|
-
FREDDIE MAC
|
0.05% | $2,343,406.31 | 2,542,767 |
|
-
FREDDIE MAC
|
0.05% | $2,146,578.68 | 2,223,618 |
|
-
FEDERAL HOME LOAN MORTGAGE CORP
|
0.04% | $2,135,765.12 | 2,318,994 |
|
-
WELLS FARGO COMMERCIAL MORTGAGE TRUST
|
0.04% | $2,066,525.06 | 2,000,000 |
|
-
CARMAX AUTO OWNER TRUST 2025-2
|
0.04% | $2,008,725.94 | 2,000,000 |
|
-
FHMS K757 A2 4.456% 08/25/31
|
0.04% | $2,005,350.92 | 2,000,000 |
|
-
FNMA
|
0.04% | $2,001,562.35 | 2,044,431 |
|
-
FHLMC POOL
|
0.04% | $1,992,003.25 | 2,033,830 |
|
-
UBS COMMERCIAL MORTGAGE TRUST
|
0.04% | $1,932,541.17 | 1,932,774 |
|
-
FHLMC MULTIFAMILY STRUCTURED P
|
0.04% | $1,930,537.30 | 2,000,000 |
|
-
FHLMC MULTIFAMILY STRUCTURED PASS THROUGH CERTS.
|
0.04% | $1,892,641.62 | 1,950,743 |
|
-
CITIGROUP COMMERCIAL MORTGAGE TRUST
|
0.04% | $1,888,882.18 | 2,000,000 |
|
-
FANNIE MAE
|
0.04% | $1,861,231.41 | 1,975,493 |
|
-
FREDDIE MAC
|
0.04% | $1,848,575.55 | 1,998,552 |
|
-
FNMA
|
0.04% | $1,828,207.66 | 1,981,590 |
|
-
FANNIE MAE
|
0.04% | $1,823,671.38 | 1,989,054 |
|
-
FHLMC MULTIFAMILY STRUCTURED PASS THROUGH CERTS.
|
0.04% | $1,771,323.21 | 1,726,000 |
|
-
FHLMC POOL
|
0.04% | $1,719,145.74 | 1,782,523 |
|
-
UNIFORM MORTGAGE-BACKED SECURITIES
|
0.04% | $1,696,161.46 | 1,850,000 |
|
-
FANNIE MAE
|
0.04% | $1,678,741.99 | 1,824,847 |
|
-
FNMA
|
0.04% | $1,672,611.16 | 1,819,469 |
|
-
FHLMC POOL
|
0.03% | $1,608,301.61 | 1,743,235 |
|
-
EXETER AUTOMOBILE RECEIVABLES TRUST
|
0.03% | $1,578,337.37 | 1,567,938 |
|
-
BANK5
|
0.03% | $1,547,949.72 | 1,500,000 |
|
-
BANK5 2024-5YR9
|
0.03% | $1,541,399.63 | 1,500,000 |
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