Fund profile
Tickers
IUSB
Fund manager
Total assets
$28.05 bn
Liabilities
$1.80 bn
Net assets
$26.25 bn
Number of holdings
15.90 k
IUSB stock data
Top 200 of 15904 Holdings
Security | $Holding | Balance | % of Fund | Category | Position | Country |
---|---|---|---|---|---|---|
BlackRock Cash Funds: Treasury, SL Agency Shares | 868.01 mm | 867.49 mm shares | 3.31 | Short-term investment vehicle | Long | USA |
BlackRock Cash Funds: Treasury, SL Agency Shares | 424.36 mm | 424.36 mm shares | 1.62 | Short-term investment vehicle | Long | USA |
United States Treasury Note/Bond - When Issued | 150.05 mm | 150.04 mm principal | 0.57 | Debt | Long | USA |
U.S. Treasury Notes | 121.42 mm | 137.40 mm principal | 0.46 | Debt | Long | USA |
U.S. Treasury Notes | 118.47 mm | 127.80 mm principal | 0.45 | Debt | Long | USA |
United States Treasury Note/Bond - When Issued | 117.46 mm | 117.39 mm principal | 0.45 | Debt | Long | USA |
United States Treasury Note/Bond - When Issued | 100.40 mm | 100.40 mm principal | 0.38 | Debt | Long | USA |
U.S. Treasury Notes | 94.49 mm | 94.87 mm principal | 0.36 | Debt | Long | USA |
U.S. Treasury Notes | 90.99 mm | 105.90 mm principal | 0.35 | Debt | Long | USA |
U.S. Treasury Notes | 90.00 mm | 93.04 mm principal | 0.34 | Debt | Long | USA |
U.S. Treasury Notes | 87.80 mm | 88.28 mm principal | 0.33 | Debt | Long | USA |
U.S. Treasury Notes | 85.56 mm | 84.41 mm principal | 0.33 | Debt | Long | USA |
U.S. Treasury Notes | 84.55 mm | 101.85 mm principal | 0.32 | Debt | Long | USA |
U.S. Treasury Notes | 83.50 mm | 86.40 mm principal | 0.32 | Debt | Long | USA |
U.S. Treasury Notes | 82.98 mm | 79.41 mm principal | 0.32 | Debt | Long | USA |
U.S. Treasury Notes | 82.34 mm | 88.54 mm principal | 0.31 | Debt | Long | USA |
U.S. Treasury Notes | 82.25 mm | 80.47 mm principal | 0.31 | Debt | Long | USA |
U.S. Treasury Notes | 82.04 mm | 88.50 mm principal | 0.31 | Debt | Long | USA |
U.S. Treasury Notes | 81.22 mm | 81.20 mm principal | 0.31 | Debt | Long | USA |
U.S. Treasury Notes | 79.77 mm | 78.70 mm principal | 0.30 | Debt | Long | USA |
Fannie Mae Pool | 79.03 mm | 98.13 mm principal | 0.30 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 77.99 mm | 77.45 mm principal | 0.30 | Debt | Long | USA |
U.S. Treasury Notes | 76.70 mm | 75.98 mm principal | 0.29 | Debt | Long | USA |
U.S. Treasury Bonds | 76.58 mm | 81.50 mm principal | 0.29 | Debt | Long | USA |
U.S. Treasury Notes | 76.38 mm | 79.05 mm principal | 0.29 | Debt | Long | USA |
U.S. Treasury Bonds | 73.99 mm | 116.60 mm principal | 0.28 | Debt | Long | USA |
U.S. Treasury Notes | 73.63 mm | 82.90 mm principal | 0.28 | Debt | Long | USA |
U.S. Treasury Notes | 73.32 mm | 72.62 mm principal | 0.28 | Debt | Long | USA |
U.S. Treasury Notes | 72.67 mm | 76.00 mm principal | 0.28 | Debt | Long | USA |
U.S. Treasury Notes | 72.66 mm | 79.50 mm principal | 0.28 | Debt | Long | USA |
U.S. Treasury Notes | 72.10 mm | 72.90 mm principal | 0.27 | Debt | Long | USA |
U.S. Treasury Notes | 71.47 mm | 79.80 mm principal | 0.27 | Debt | Long | USA |
U.S. Treasury Bonds | 71.43 mm | 65.41 mm principal | 0.27 | Debt | Long | USA |
U.S. Treasury Notes | 69.69 mm | 81.31 mm principal | 0.27 | Debt | Long | USA |
United States Treasury Note/Bond - When Issued | 69.65 mm | 69.23 mm principal | 0.27 | Debt | Long | USA |
U.S. Treasury Notes | 69.02 mm | 74.60 mm principal | 0.26 | Debt | Long | USA |
U.S. Treasury Notes | 68.05 mm | 67.02 mm principal | 0.26 | Debt | Long | USA |
Uniform Mortgage-Backed Security, TBA | 66.31 mm | 82.25 mm principal | 0.25 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 66.08 mm | 65.14 mm principal | 0.25 | Debt | Long | USA |
United States Treasury Note/Bond - When Issued | 65.30 mm | 64.91 mm principal | 0.25 | Debt | Long | USA |
United States Treasury Note/Bond - When Issued | 65.10 mm | 61.46 mm principal | 0.25 | Debt | Long | USA |
U.S. Treasury Notes | 64.85 mm | 72.40 mm principal | 0.25 | Debt | Long | USA |
U.S. Treasury Notes | 63.79 mm | 71.40 mm principal | 0.24 | Debt | Long | USA |
U.S. Treasury Notes | 60.98 mm | 60.36 mm principal | 0.23 | Debt | Long | USA |
U.S. Treasury Notes | 60.28 mm | 60.80 mm principal | 0.23 | Debt | Long | USA |
U.S. Treasury Notes | 59.30 mm | 58.78 mm principal | 0.23 | Debt | Long | USA |
U.S. Treasury Notes | 58.94 mm | 63.25 mm principal | 0.22 | Debt | Long | USA |
Uniform Mortgage-Backed Security, TBA | 58.00 mm | 66.28 mm principal | 0.22 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Bonds | 57.72 mm | 57.30 mm principal | 0.22 | Debt | Long | USA |
U.S. Treasury Notes | 57.05 mm | 55.55 mm principal | 0.22 | Debt | Long | USA |
United States Treasury Note/Bond - When Issued | 57.01 mm | 57.31 mm principal | 0.22 | Debt | Long | USA |
U.S. Treasury Notes | 56.23 mm | 58.50 mm principal | 0.21 | Debt | Long | USA |
U.S. Treasury Bonds | 55.01 mm | 55.98 mm principal | 0.21 | Debt | Long | USA |
U.S. Treasury Bonds | 53.88 mm | 57.24 mm principal | 0.21 | Debt | Long | USA |
U.S. Treasury Notes | 53.55 mm | 64.70 mm principal | 0.20 | Debt | Long | USA |
U.S. Treasury Notes | 53.04 mm | 53.40 mm principal | 0.20 | Debt | Long | USA |
U.S. Treasury Notes | 51.22 mm | 57.00 mm principal | 0.20 | Debt | Long | USA |
U.S. Treasury Bonds | 51.14 mm | 56.89 mm principal | 0.19 | Debt | Long | USA |
U.S. Treasury Notes | 50.67 mm | 54.50 mm principal | 0.19 | Debt | Long | USA |
U.S. Treasury Notes | 49.94 mm | 54.00 mm principal | 0.19 | Debt | Long | USA |
U.S. Treasury Notes | 49.60 mm | 51.70 mm principal | 0.19 | Debt | Long | USA |
U.S. Treasury Notes | 49.38 mm | 53.70 mm principal | 0.19 | Debt | Long | USA |
Freddie Mac Multifamily Structured Pass Through Certificates | 49.34 mm | 50.00 mm principal | 0.19 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 48.48 mm | 50.70 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Notes | 48.33 mm | 49.80 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Notes | 48.21 mm | 52.00 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Notes | 47.77 mm | 52.00 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Notes | 47.55 mm | 57.00 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Bonds | 47.54 mm | 77.90 mm principal | 0.18 | Debt | Long | USA |
Uniform Mortgage-Backed Security, TBA | 47.47 mm | 46.83 mm principal | 0.18 | ABS-mortgage backed security | Long | USA |
Uniform Mortgage-Backed Security, TBA | 47.24 mm | 50.17 mm principal | 0.18 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 46.73 mm | 50.50 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Notes | 46.65 mm | 47.70 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Notes | 46.58 mm | 46.37 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Bonds | 46.01 mm | 75.00 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Notes | 45.95 mm | 46.03 mm principal | 0.18 | Debt | Long | USA |
U.S. Treasury Notes | 45.67 mm | 46.41 mm principal | 0.17 | Debt | Long | USA |
U.S. Treasury Notes | 45.63 mm | 47.65 mm principal | 0.17 | Debt | Long | USA |
U.S. Treasury Bonds | 45.56 mm | 59.00 mm principal | 0.17 | Debt | Long | USA |
Freddie Mac Pool | 45.15 mm | 55.75 mm principal | 0.17 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 45.06 mm | 54.83 mm principal | 0.17 | Debt | Long | USA |
U.S. Treasury Bonds | 44.69 mm | 52.50 mm principal | 0.17 | Debt | Long | USA |
Freddie Mac Pool | 44.62 mm | 55.26 mm principal | 0.17 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 44.52 mm | 44.60 mm principal | 0.17 | Debt | Long | USA |
U.S. Treasury Notes | 44.50 mm | 44.59 mm principal | 0.17 | Debt | Long | USA |
U.S. Treasury Notes | 44.04 mm | 46.65 mm principal | 0.17 | Debt | Long | USA |
Uniform Mortgage-Backed Security, TBA | 43.60 mm | 51.85 mm principal | 0.17 | ABS-mortgage backed security | Long | USA |
Ginnie Mae | 43.60 mm | 50.43 mm principal | 0.17 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Bonds | 43.56 mm | 48.56 mm principal | 0.17 | Debt | Long | USA |
U.S. Treasury Bonds | 43.22 mm | 61.05 mm principal | 0.16 | Debt | Long | USA |
U.S. Treasury Notes | 42.64 mm | 44.20 mm principal | 0.16 | Debt | Long | USA |
Fannie Mae Pool | 42.62 mm | 52.69 mm principal | 0.16 | ABS-mortgage backed security | Long | USA |
Fannie Mae Pool | 41.84 mm | 49.75 mm principal | 0.16 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 41.69 mm | 40.00 mm principal | 0.16 | Debt | Long | USA |
Uniform Mortgage-Backed Security, TBA | 41.53 mm | 47.50 mm principal | 0.16 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 41.39 mm | 40.15 mm principal | 0.16 | Debt | Long | USA |
Ginnie Mae II Pool | 41.21 mm | 49.47 mm principal | 0.16 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 41.09 mm | 38.92 mm principal | 0.16 | Debt | Long | USA |
U.S. Treasury Bonds | 40.87 mm | 64.70 mm principal | 0.16 | Debt | Long | USA |
U.S. Treasury Bonds | 40.67 mm | 60.63 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Notes | 40.37 mm | 45.10 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Notes | 40.14 mm | 41.50 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Bonds | 40.09 mm | 53.85 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Bonds | 39.85 mm | 41.50 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Notes | 39.55 mm | 39.44 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Notes | 39.53 mm | 42.40 mm principal | 0.15 | Debt | Long | USA |
Ginnie Mae | 39.31 mm | 42.61 mm principal | 0.15 | ABS-mortgage backed security | Long | USA |
Fannie Mae Pool | 38.85 mm | 48.10 mm principal | 0.15 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Bonds | 38.82 mm | 55.70 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Notes | 38.43 mm | 38.86 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Notes | 38.40 mm | 43.40 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Notes | 38.33 mm | 40.00 mm principal | 0.15 | Debt | Long | USA |
United States Treasury Note/Bond - When Issued | 38.28 mm | 38.66 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Notes | 38.25 mm | 43.40 mm principal | 0.15 | Debt | Long | USA |
U.S. Treasury Bonds | 38.06 mm | 48.00 mm principal | 0.14 | Debt | Long | USA |
U.S. Treasury Notes | 37.96 mm | 38.70 mm principal | 0.14 | Debt | Long | USA |
U.S. Treasury Notes | 37.75 mm | 37.00 mm principal | 0.14 | Debt | Long | USA |
Ginnie Mae | 37.69 mm | 37.13 mm principal | 0.14 | ABS-mortgage backed security | Long | USA |
Ginnie Mae II Pool | 37.05 mm | 44.39 mm principal | 0.14 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Bonds | 36.66 mm | 46.00 mm principal | 0.14 | Debt | Long | USA |
U.S. Treasury Notes | 36.42 mm | 34.99 mm principal | 0.14 | Debt | Long | USA |
Fannie Mae Pool | 36.40 mm | 41.43 mm principal | 0.14 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 36.34 mm | 38.00 mm principal | 0.14 | Debt | Long | USA |
U.S. Treasury Notes | 36.29 mm | 36.87 mm principal | 0.14 | Debt | Long | USA |
U.S. Treasury Notes | 35.95 mm | 36.29 mm principal | 0.14 | Debt | Long | USA |
U.S. Treasury Notes | 35.91 mm | 35.50 mm principal | 0.14 | Debt | Long | USA |
U.S. Treasury Notes | 35.85 mm | 38.25 mm principal | 0.14 | Debt | Long | USA |
U.S. Treasury Notes | 35.83 mm | 37.00 mm principal | 0.14 | Debt | Long | USA |
U.S. Treasury Notes | 35.33 mm | 35.00 mm principal | 0.13 | Debt | Long | USA |
Ginnie Mae II Pool | 35.26 mm | 39.33 mm principal | 0.13 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 35.18 mm | 39.58 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Bonds | 34.86 mm | 47.34 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 34.85 mm | 35.41 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 34.81 mm | 37.50 mm principal | 0.13 | Debt | Long | USA |
Freddie Mac Pool | 34.51 mm | 42.54 mm principal | 0.13 | ABS-mortgage backed security | Long | USA |
Ginnie Mae II Pool | 34.44 mm | 41.33 mm principal | 0.13 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 34.36 mm | 37.30 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 34.33 mm | 37.00 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 34.26 mm | 36.05 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 34.18 mm | 36.90 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 34.04 mm | 35.10 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 34.02 mm | 38.50 mm principal | 0.13 | Debt | Long | USA |
Uniform Mortgage-Backed Security, TBA | 33.85 mm | 37.72 mm principal | 0.13 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 33.80 mm | 34.59 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 33.75 mm | 34.48 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 33.73 mm | 34.51 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 33.67 mm | 35.45 mm principal | 0.13 | Debt | Long | USA |
Fannie Mae Pool | 33.38 mm | 41.34 mm principal | 0.13 | ABS-mortgage backed security | Long | USA |
Uniform Mortgage-Backed Security, TBA | 33.29 mm | 36.15 mm principal | 0.13 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 33.14 mm | 33.00 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 32.84 mm | 32.88 mm principal | 0.13 | Debt | Long | USA |
U.S. Treasury Notes | 32.70 mm | 37.10 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Notes | 32.63 mm | 36.60 mm principal | 0.12 | Debt | Long | USA |
Ginnie Mae II Pool | 32.58 mm | 37.63 mm principal | 0.12 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 32.46 mm | 40.00 mm principal | 0.12 | Debt | Long | USA |
Ginnie Mae II Pool | 32.33 mm | 37.30 mm principal | 0.12 | ABS-mortgage backed security | Long | USA |
Ginnie Mae II Pool | 32.14 mm | 37.14 mm principal | 0.12 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 32.13 mm | 31.97 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Notes | 31.99 mm | 32.30 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Notes | 31.66 mm | 32.56 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Notes | 31.65 mm | 32.00 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Bonds | 31.35 mm | 45.70 mm principal | 0.12 | Debt | Long | USA |
Ginnie Mae II Pool | 31.28 mm | 36.14 mm principal | 0.12 | ABS-mortgage backed security | Long | USA |
Freddie Mac Pool | 31.12 mm | 32.68 mm principal | 0.12 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 30.94 mm | 31.00 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Notes | 30.84 mm | 34.40 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Notes | 30.82 mm | 32.60 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Notes | 30.80 mm | 34.60 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Bonds | 30.66 mm | 39.05 mm principal | 0.12 | Debt | Long | USA |
U.S. Treasury Notes | 30.48 mm | 30.90 mm principal | 0.12 | Debt | Long | USA |
Fannie Mae Pool | 30.47 mm | 36.23 mm principal | 0.12 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Bonds | 30.44 mm | 44.00 mm principal | 0.12 | Debt | Long | USA |
Fannie Mae Pool | 30.32 mm | 35.89 mm principal | 0.12 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 30.15 mm | 31.85 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Bonds | 30.15 mm | 42.24 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 30.14 mm | 31.00 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 30.07 mm | 32.35 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 30.02 mm | 30.17 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 29.98 mm | 29.80 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 29.85 mm | 30.00 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 29.72 mm | 29.59 mm principal | 0.11 | Debt | Long | USA |
Freddie Mac Pool | 29.56 mm | 35.01 mm principal | 0.11 | ABS-mortgage backed security | Long | USA |
Uniform Mortgage-Backed Security, TBA | 29.08 mm | 29.00 mm principal | 0.11 | ABS-mortgage backed security | Long | USA |
Freddie Mac Pool | 28.95 mm | 35.95 mm principal | 0.11 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 28.92 mm | 30.73 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 28.82 mm | 30.00 mm principal | 0.11 | Debt | Long | USA |
Ginnie Mae II Pool | 28.55 mm | 30.07 mm principal | 0.11 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 28.46 mm | 31.50 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 28.29 mm | 30.00 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 28.20 mm | 30.00 mm principal | 0.11 | Debt | Long | USA |
Ginnie Mae | 28.20 mm | 31.57 mm principal | 0.11 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Notes | 28.14 mm | 31.00 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 28.13 mm | 28.15 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 27.91 mm | 30.00 mm principal | 0.11 | Debt | Long | USA |
U.S. Treasury Notes | 27.84 mm | 28.74 mm principal | 0.11 | Debt | Long | USA |
Fannie Mae Pool | 27.54 mm | 32.50 mm principal | 0.10 | ABS-mortgage backed security | Long | USA |
U.S. Treasury Bonds | 27.15 mm | 35.90 mm principal | 0.10 | Debt | Long | USA |
U.S. Treasury Notes | 27.09 mm | 28.46 mm principal | 0.10 | Debt | Long | USA |
U.S. Treasury Notes | 27.08 mm | 27.84 mm principal | 0.10 | Debt | Long | USA |
U.S. Treasury Bonds | 27.02 mm | 36.00 mm principal | 0.10 | Debt | Long | USA |