| United States Treasury Bonds 1.875%
| - | 6.04% | - | - | 5,080,079,500 |
| United States Treasury Bonds 2%
| - | 6.02% | - | - | 4,922,732,900 |
| United States Treasury Bonds 1.875%
| - | 4.74% | - | - | 4,056,141,700 |
| United States Treasury Bonds 4.125%
| - | 4.68% | - | - | 2,459,108,200 |
| United States Treasury Bonds 4.75%
| - | 4.56% | - | - | 2,181,450,000 |
| United States Treasury Bonds 4.625%
| - | 4.45% | - | - | 2,173,718,200 |
| United States Treasury Bonds 4.25%
| - | 4.35% | - | - | 2,236,155,100 |
| United States Treasury Bonds 4.25%
| - | 4.13% | - | - | 2,121,725,200 |
| United States Treasury Bonds 3.625%
| - | 3.90% | - | - | 2,269,577,800 |
| United States Treasury Bonds 1.625%
| - | 3.67% | - | - | 3,316,087,300 |