Vanguard Institutional Index Funds. Holdings as of Jun 30, 2026, from Form N-PORT.
Share of net assets at the report date, for the whole fund across all share classes.
| Holding | Weight | Value | Shares or units |
|---|---|---|---|
| United States Treasury BillBond | 6.78% | $633.56M | 634,074,000 |
| United States Treasury BillBond | 6.10% | $570.21M | 572,286,000 |
| United States Treasury BillBond | 5.61% | $524.02M | 524,075,000 |
| United States Treasury BillBond | 5.41% | $505.31M | 506,070,000 |
| United States Treasury BillBond | 5.18% | $484.11M | 485,171,000 |
| United States Treasury BillBond | 5.17% | $483.37M | 483,993,000 |
| United States Treasury BillBond | 5.15% | $481.03M | 481,993,000 |
| United States Treasury BillBond | 5.12% | $478.96M | 480,349,000 |
| United States Treasury BillBond | 5.02% | $469.72M | 470,003,000 |
| United States Treasury BillBond | 4.72% | $441.24M | 442,437,000 |
| United States Treasury BillBond | 4.71% | $440.23M | 443,116,000 |
| United States Treasury BillBond | 3.66% | $342.48M | 343,979,000 |
| United States Treasury BillBond | 3.66% | $341.87M | 344,599,000 |
| United States Treasury BillBond | 3.64% | $340.71M | 343,694,000 |
| United States Treasury BillBond | 3.63% | $339.69M | 341,682,000 |
| United States Treasury BillBond | 3.63% | $339.20M | 341,671,000 |
| United States Treasury BillBond | 3.54% | $331.21M | 332,906,000 |
| United States Treasury BillBond | 3.16% | $294.98M | 296,201,000 |
| United States Treasury BillBond | 3.09% | $288.49M | 290,112,000 |
| United States Treasury BillBond | 3.00% | $280.38M | 281,333,000 |
| United States Treasury BillBond | 2.98% | $278.52M | 279,882,000 |
| United States Treasury BillBond | 1.46% | $136.75M | 137,811,000 |
| United States Treasury BillBond | 1.44% | $134.92M | 135,875,000 |
| United States Treasury BillBond | 1.42% | $133.01M | 134,243,000 |
| United States Treasury BillBond | 1.40% | $130.42M | 131,524,000 |
| United States Treasury BillBond | 1.27% | $118.60M | 119,345,000 |
| Vanguard Cmt Funds-Vanguard Market Liquidity FundCash or money market | 0.04% | $3.75M | 3,745,698 |
Holdings from the fund's latest Form N-PORT; expense ratio (net of fee waivers) from the risk/return summary of its prospectus; fund type from Form N-CEN. Prices are end-of-day closes adjusted for splits; total return also reinvests distributions.