| United States Treasury Notes 1.875%
| - | 4.09% | - | - | 635,248,510 |
| United States Treasury Notes 2.125%
| - | 4.04% | - | - | 613,691,247 |
| United States Treasury Notes 1.875%
| - | 3.80% | - | - | 584,236,512 |
| United States Treasury Notes 1.75%
| - | 3.62% | - | - | 562,761,600 |
| United States Treasury Notes 1.125%
| - | 3.42% | - | - | 535,233,555 |
| United States Treasury Notes 1.625%
| - | 3.39% | - | - | 522,092,299 |
| United States Treasury Notes 1.125%
| - | 3.37% | - | - | 542,214,958 |
| United States Treasury Notes 1.375%
| - | 3.35% | - | - | 530,896,557 |
| United States Treasury Notes 0.625%
| - | 3.34% | - | - | 548,897,690 |
| United States Treasury Notes 1.625%
| - | 3.29% | - | - | 503,152,268 |