iShares Total USD Fixed Income Market ETF (BTOT) is an ETF managed by BlackRock / iShares. Its largest position is BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES (null), representing 6.54% of fund assets.
iShares Total USD Fixed Income Market ETF Portfolio Holdings
Source: SEC Form N-PORT institutional portfolio disclosures
- Ticker:
- BTOT
- Type:
- ETF
- Manager:
- BlackRock / iShares
- Total Assets:
- —
- Report Date:
- Feb 28, 2026
- Filing Date:
- Apr 23, 2026
| Holding | Weight | Market Value | Shares |
|---|---|---|---|
|
-
BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES
|
6.54% | $1,657,161.99 | 1,656,334 |
|
-
FANNIE MAE
|
2.40% | $608,447.15 | 732,796 |
|
-
FHLMC POOL
|
1.66% | $419,494.41 | 481,662 |
|
-
BENCHMARK MORTGAGE TRUST
|
1.23% | $312,543.36 | 300,000 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
1.01% | $256,203.08 | 275,000 |
|
-
FANNIE MAE
|
0.94% | $237,023.13 | 261,339 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.83% | $210,904.42 | 212,329 |
|
-
FANNIE MAE
|
0.82% | $208,743.91 | 250,772 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.80% | $201,409.86 | 198,528 |
|
-
FNMA
|
0.76% | $193,798.73 | 204,891 |
|
-
FANNIE MAE
|
0.71% | $179,093.29 | 176,742 |
|
-
FREDDIE MAC
|
0.58% | $147,399.49 | 143,635 |
|
-
FANNIE MAE
|
0.57% | $144,693.87 | 148,589 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.52% | $132,346.15 | 150,000 |
|
-
FANNIE MAE
|
0.51% | $128,973.73 | 129,877 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.50% | $127,053.43 | 150,000 |
|
-
GNMA
|
0.47% | $119,284.00 | 118,303 |
|
-
GNMA
|
0.45% | $114,634.84 | 125,000 |
|
-
FANNIE MAE
|
0.42% | $106,820.66 | 117,749 |
|
-
FREDDIE MAC
|
0.40% | $100,791.79 | 97,164 |
|
-
FANNIE MAE POOL MBS 30YR TBA
|
0.40% | $100,448.54 | 100,000 |
|
-
FANNIE MAE
|
0.40% | $100,327.33 | 97,652 |
|
-
BLACKROCK CASH FUNDS TREASURY SL AGENCY SHARES
|
0.39% | $100,000.00 | 100,000 |
|
-
FANNIE MAE
|
0.39% | $99,918.32 | 94,870 |
|
-
FREDDIE MAC
|
0.39% | $99,577.04 | 95,645 |
|
-
FANNIE MAE
|
0.39% | $99,398.53 | 96,838 |
|
-
FANNIE MAE OR FREDDIE MAC MBS 15YR TBA
|
0.39% | $99,136.32 | 100,000 |
|
-
FANNIE MAE
|
0.38% | $96,472.85 | 94,606 |
|
-
FEDERAL NATIONAL MORTGAGE ASSOCIATION
|
0.38% | $95,329.74 | 100,000 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.37% | $93,842.52 | 100,000 |
|
-
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION
|
0.34% | $86,583.53 | 98,091 |
|
-
FANNIE MAE
|
0.26% | $64,692.84 | 66,450 |
|
-
MEDLINE INDUSTRIES/MOZART 7/25 INCR COV-LITE TL
|
0.20% | $49,956.48 | 49,875 |
|
-
TRANSDIGM TL-M 8/13/2032
|
0.20% | $49,846.07 | 49,875 |
|
-
UNIVERSAL SERVICES 8/25 (USD) COV-LITE
|
0.20% | $49,844.08 | 49,875 |
|
-
QUIKRETE HOLDINGS, INC.
|
0.20% | $49,823.50 | 49,874 |
|
-
HUNTER DOUGLAS INC.
|
0.20% | $49,822.19 | 49,874 |
|
-
CREATIVE ARTISTS AGENCY LLC
|
0.20% | $49,802.00 | 50,000 |
|
-
AMERICAN AIRLINES, INC.
|
0.20% | $49,767.14 | 49,874 |
|
-
SOUTHERN VETERINARY PARTNERS LLC
|
0.20% | $49,747.32 | 49,875 |
|
-
ASURION LLC
|
0.20% | $49,724.12 | 49,874 |
|
-
CLARIOS GLOBAL LP
|
0.20% | $49,708.92 | 49,875 |
|
-
WAND NEWCO 3 INC
|
0.20% | $49,548.60 | 49,867 |
|
-
FLEX ACQUISITION CO., INC.
|
0.19% | $49,322.58 | 49,875 |
|
-
ATHENAHEALTH GROUP INC.
|
0.19% | $48,502.82 | 49,874 |
|
-
HOWDEN GROUP HOLDINGS LTD
|
0.19% | $47,281.21 | 49,875 |
|
-
UKG INC
|
0.19% | $47,106.94 | 49,875 |
|
-
ZELIS PAYMENTS BUYER INC
|
0.19% | $47,006.30 | 49,874 |
|
-
CLOUD SOFTWARE GROUP INC
|
0.18% | $46,159.03 | 49,875 |
|
-
AMWINS GROUP INC
|
0.10% | $24,710.25 | 25,000 |
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