| United States Treasury Notes 2.125%
| - | 4.00% | - | - | 536,232,461 |
| United States Treasury Notes 1.875%
| - | 3.89% | - | - | 530,381,030 |
| United States Treasury Notes 1.75%
| - | 3.69% | - | - | 508,784,601 |
| United States Treasury Notes 1.125%
| - | 3.50% | - | - | 501,646,051 |
| United States Treasury Notes 0.625%
| - | 3.48% | - | - | 511,139,988 |
| United States Treasury Notes 1.375%
| - | 3.42% | - | - | 481,550,221 |
| United States Treasury Notes 1.625%
| - | 3.38% | - | - | 456,613,035 |
| United States Treasury Notes 2.125%
| - | 3.32% | - | - | 442,554,993 |
| United States Treasury Notes 1.625%
| - | 3.30% | - | - | 448,491,784 |
| United States Treasury Notes 2.375%
| - | 3.26% | - | - | 429,357,024 |