US TREASURY N/B

NPORT-P false 0000862084 XXXXXXXX S000090173 C000257084 VANGUARD INSTITUTIONAL INDEX FUNDS 811-06093 0000862084 549300HU31ENFT74XN04 100 Vanguard Boulevard Malvern 19355 610-669-1000 VANGUARD ULTRA-SHORT TREASURY ETF S000090173 529900IZR0IZYR5N4F48 2025-12-31 2025-06-30 N 247295402.23 6684.21 247288718.02 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 67208.49000000 USD N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CEY3 1745000.00000000 PA USD 1743704.88000000 0.705129168027 Long DBT UST US N 2 2025-07-15 Fixed 3.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128285C0 904000.00000000 PA USD 900963.12000000 0.364336524210 Long DBT UST US N 2 2025-09-30 Fixed 3.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797NX1 8820000.00000000 PA USD 8817944.41000000 3.565849861895 Long DBT UST US N 2 2025-07-03 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797LW5 10859000.00000000 PA USD 10847611.68000000 4.386618106501 Long DBT UST US N 2 2025-07-10 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128285J5 721000.00000000 PA USD 717817.46000000 0.290275054093 Long DBT UST US N 2 2025-10-31 Fixed 3.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QC4 5110000.00000000 PA USD 5093486.14000000 2.059732518645 Long DBT UST US N 2 2025-07-29 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CFP1 1599000.00000000 PA USD 1598437.86000000 0.646385274992 Long DBT UST US N 2 2025-10-15 Fixed 4.25000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128286X3 991000.00000000 PA USD 973812.34000000 0.393795700748 Long DBT UST US N 2 2026-05-31 Fixed 2.12500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QB6 5537000.00000000 PA USD 5523515.08000000 2.233630035460 Long DBT UST US N 2 2025-07-22 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128285N6 814000.00000000 PA USD 809230.46000000 0.327241156199 Long DBT UST US N 2 2025-11-30 Fixed 2.87500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PP6 6009000.00000000 PA USD 5972224.92000000 2.415081839486 Long DBT UST US N 2 2025-08-21 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PG6 6067000.00000000 PA USD 6045942.44000000 2.444892144052 Long DBT UST US N 2 2025-07-31 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CAT8 2091000.00000000 PA USD 2063065.54000000 0.834274024516 Long DBT UST US N 2 2025-10-31 Fixed 0.25000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CJV4 2423000.00000000 PA USD 2422810.69000000 0.979749787778 Long DBT UST US N 2 2026-01-31 Fixed 4.25000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CAB7 1643000.00000000 PA USD 1637416.36000000 0.662147619636 Long DBT UST US N 2 2025-07-31 Fixed 0.25000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CJE2 1896000.00000000 PA USD 1899851.25000000 0.768272513688 Long DBT UST US N 2 2025-10-31 Fixed 5.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 912828Y79 828000.00000000 PA USD 826803.28000000 0.334347351799 Long DBT UST US N 2 2025-07-31 Fixed 2.87500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QU4 2473000.00000000 PA USD 2450546.23000000 0.990965641142 Long DBT UST US N 2 2025-09-16 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128286L9 1066000.00000000 PA USD 1051509.06000000 0.425215136549 Long DBT UST US N 2 2026-03-31 Fixed 2.25000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QP5 2784000.00000000 PA USD 2742920.51000000 1.109197593793 Long DBT UST US N 2 2025-11-06 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CBT7 2236000.00000000 PA USD 2180798.75000000 0.881883640896 Long DBT UST US N 2 2026-03-31 Fixed 0.75000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CKB6 2494000.00000000 PA USD 2500819.52000000 1.011295436372 Long DBT UST US N 2 2026-02-28 Fixed 4.62500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PM3 1982000.00000000 PA USD 1931650.32000000 0.781131600125 Long DBT UST US N 2 2026-02-19 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128286F2 1064000.00000000 PA USD 1052196.25000000 0.425493026299 Long DBT UST US N 2 2026-02-28 Fixed 2.50000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QV2 2473000.00000000 PA USD 2448678.12000000 0.990210204333 Long DBT UST US N 2 2025-09-23 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128286A3 1026000.00000000 PA USD 1016421.33000000 0.411026163319 Long DBT UST US N 2 2026-01-31 Fixed 2.62500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PN1 6068000.00000000 PA USD 6036072.11000000 2.440900724598 Long DBT UST US N 2 2025-08-14 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CGV7 1677000.00000000 PA USD 1672545.47000000 0.676353326343 Long DBT UST US N 2 2026-04-15 Fixed 3.75000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CHN4 1459000.00000000 PA USD 1459227.97000000 0.590090798190 Long DBT UST US N 2 2025-07-31 Fixed 4.75000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QQ3 2784000.00000000 PA USD 2740830.62000000 1.108352472343 Long DBT UST US N 2 2025-11-13 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797MG9 7947000.00000000 PA USD 7912205.38000000 3.199582028388 Long DBT UST US N 2 2025-08-07 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CKH3 2629000.00000000 PA USD 2635983.28000000 1.065953716411 Long DBT UST US N 2 2026-03-31 Fixed 4.50000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CJS1 2350000.00000000 PA USD 2349908.21000000 0.950269073662 Long DBT UST US N 2 2025-12-31 Fixed 4.25000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CKK6 2852000.00000000 PA USD 2869825.00000000 1.160515943864 Long DBT UST US N 2 2026-04-30 Fixed 4.87500000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128284Z0 897000.00000000 PA USD 894301.99000000 0.361642859067 Long DBT UST US N 2 2025-08-31 Fixed 2.75000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797NA1 4745000.00000000 PA USD 4678175.87000000 1.891787020231 Long DBT UST US N 2 2025-10-30 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QA8 5537000.00000000 PA USD 5528053.24000000 2.235465202077 Long DBT UST US N 2 2025-07-15 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CJL6 1942000.00000000 PA USD 1946096.40000000 0.786973387052 Long DBT UST US N 2 2025-11-30 Fixed 4.87500000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CBW0 2322000.00000000 PA USD 2258870.63000000 0.913454786003 Long DBT UST US N 2 2026-04-30 Fixed 0.75000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CAJ0 1807000.00000000 PA USD 1794223.95000000 0.725558353153 Long DBT UST US N 2 2025-08-31 Fixed 0.25000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PV3 2002000.00000000 PA USD 1945248.37000000 0.786630455920 Long DBT UST US N 2 2026-03-19 None 0.00000000 N N N N N N Vanguard Cmt Funds-Vanguard Market Liquidity Fund 1I6HV0TLSTR3A4XQ6L78 Vanguard Market Liquidity Fund N/A 169068.80000000 NS USD 169051.89000000 0.068362152286 Long STIV CORP US N 1 N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QD2 2001000.00000000 PA USD 1939074.88000000 0.784133985377 Long DBT UST US N 2 2026-04-16 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CCF6 2286000.00000000 PA USD 2218312.96000000 0.897053847729 Long DBT UST US N 2 2026-05-31 Fixed 0.75000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CBC4 2292000.00000000 PA USD 2248308.75000000 0.909183713677 Long DBT UST US N 2 2025-12-31 Fixed 0.37500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PW1 2787000.00000000 PA USD 2763282.63000000 1.117431742185 Long DBT UST US N 2 2025-09-11 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CAM3 2145000.00000000 PA USD 2123466.22000000 0.858699190566 Long DBT UST US N 2 2025-09-30 Fixed 0.25000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 912828K74 1992000.00000000 PA USD 1985619.37000000 0.802955907531 Long DBT UST US N 2 2025-08-15 Fixed 2.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797NU7 1985000.00000000 PA USD 1944612.34000000 0.786373254538 Long DBT UST US N 2 2025-12-26 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QG5 2822000.00000000 PA USD 2784512.07000000 1.126016622308 Long DBT UST US N 2 2025-10-23 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 912810EW4 266000.00000000 PA USD 268088.51000000 0.108411136644 Long DBT UST US N 2 2026-02-15 Fixed 6.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CHV6 1757000.00000000 PA USD 1758304.03000000 0.711032854259 Long DBT UST US N 2 2025-08-31 Fixed 5.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PZ4 5508000.00000000 PA USD 5503544.62000000 2.225554268737 Long DBT UST US N 2 2025-07-08 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 912810EV6 131000.00000000 PA USD 130928.36000000 0.052945545210 Long DBT UST US N 2 2025-08-15 Fixed 6.87500000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CGE5 1678000.00000000 PA USD 1675574.77000000 0.677578331682 Long DBT UST US N 2 2026-01-15 Fixed 3.87500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PY7 2816000.00000000 PA USD 2787779.80000000 1.127338045310 Long DBT UST US N 2 2025-09-25 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 912828M56 2385000.00000000 PA USD 2366460.35000000 0.956962520954 Long DBT UST US N 2 2025-11-15 Fixed 2.25000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797NL7 4754000.00000000 PA USD 4672191.64000000 1.889367083710 Long DBT UST US N 2 2025-11-28 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CJB8 1954000.00000000 PA USD 1956976.80000000 0.791373264283 Long DBT UST US N 2 2025-09-30 Fixed 5.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QJ9 2418000.00000000 PA USD 2405855.65000000 0.972893413522 Long DBT UST US N 2 2025-08-12 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CGR6 1616000.00000000 PA USD 1621491.88000000 0.655707989019 Long DBT UST US N 2 2026-03-15 Fixed 4.62500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797MH7 4701000.00000000 PA USD 4664799.11000000 1.886377650929 Long DBT UST US N 2 2025-09-04 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CBH3 2410000.00000000 PA USD 2356622.26000000 0.952984138892 Long DBT UST US N 2 2026-01-31 Fixed 0.37500000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CFK2 1670000.00000000 PA USD 1668238.67000000 0.674611718382 Long DBT UST US N 2 2025-09-15 Fixed 3.50000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CGA3 1673000.00000000 PA USD 1671562.26000000 0.675955730364 Long DBT UST US N 2 2025-12-15 Fixed 4.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QN0 1971000.00000000 PA USD 1904180.38000000 0.770023151580 Long DBT UST US N 2 2026-05-14 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CFE6 1502000.00000000 PA USD 1499242.42000000 0.606272066111 Long DBT UST US N 2 2025-08-15 Fixed 3.12500000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CHB0 1456000.00000000 PA USD 1450483.13000000 0.586554510700 Long DBT UST US N 2 2026-05-15 Fixed 3.62500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QL4 2473000.00000000 PA USD 2456362.18000000 0.993317527652 Long DBT UST US N 2 2025-08-26 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QK6 2418000.00000000 PA USD 2403782.16000000 0.972054923996 Long DBT UST US N 2 2025-08-19 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128285T3 914000.00000000 PA USD 906787.96000000 0.366692005709 Long DBT UST US N 2 2025-12-31 Fixed 2.62500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QH3 2418000.00000000 PA USD 2407973.69000000 0.973749918427 Long DBT UST US N 2 2025-08-05 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QT7 2473000.00000000 PA USD 2452659.65000000 0.991820277786 Long DBT UST US N 2 2025-09-09 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CKS9 2823000.00000000 PA USD 2842959.49000000 1.149651918115 Long DBT UST US N 2 2026-05-31 Fixed 4.87500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PD3 1993000.00000000 PA USD 1947547.26000000 0.787560093963 Long DBT UST US N 2 2026-01-22 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QE0 2826000.00000000 PA USD 2793069.25000000 1.129477022794 Long DBT UST US N 2 2025-10-09 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QM2 2473000.00000000 PA USD 2454520.52000000 0.992572786843 Long DBT UST US N 2 2025-09-02 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 9128286S4 803000.00000000 PA USD 791801.92000000 0.320193305355 Long DBT UST US N 2 2026-04-30 Fixed 2.37500000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CBQ3 2218000.00000000 PA USD 2164542.74000000 0.875309944315 Long DBT UST US N 2 2026-02-28 Fixed 0.50000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 912828P46 1992000.00000000 PA USD 1960485.94000000 0.792792310016 Long DBT UST US N 2 2026-02-15 Fixed 1.62500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PX9 2816000.00000000 PA USD 2789922.32000000 1.128204449575 Long DBT UST US N 2 2025-09-18 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QF7 2826000.00000000 PA USD 2790722.13000000 1.128527881233 Long DBT UST US N 2 2025-10-16 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CAZ4 1954000.00000000 PA USD 1922476.49000000 0.777421835251 Long DBT UST US N 2 2025-11-30 Fixed 0.37500000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797MS3 4788000.00000000 PA USD 4735617.14000000 1.915015443453 Long DBT UST US N 2 2025-10-02 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QR1 2784000.00000000 PA USD 2738482.42000000 1.107402894044 Long DBT UST US N 2 2025-11-20 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PF8 6067000.00000000 PA USD 6050817.10000000 2.446863386428 Long DBT UST US N 2 2025-07-24 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 912828R36 1995000.00000000 PA USD 1953307.61000000 0.789889496633 Long DBT UST US N 2 2026-05-15 Fixed 1.62500000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CFW6 1660000.00000000 PA USD 1660648.43000000 0.671542334521 Long DBT UST US N 2 2025-11-15 Fixed 4.50000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797QW0 2473000.00000000 PA USD 2446588.71000000 0.989365276988 Long DBT UST US N 2 2025-09-30 None 0.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PQ4 5917000.00000000 PA USD 5875626.97000000 2.376019018192 Long DBT UST US N 2 2025-08-28 None 0.00000000 N N N N N N United States Treasury Note/Bond 254900HROIFWPRGM1V77 US TREASURY N/B 91282CGL9 1522000.00000000 PA USD 1519919.14000000 0.614633434218 Long DBT UST US N 2 2026-02-15 Fixed 4.00000000 N N N N N N United States Treasury Bill 254900HROIFWPRGM1V77 TREASURY BILL 912797PE1 6067000.00000000 PA USD 6055809.87000000 2.448882390789 Long DBT UST US N 2 2025-07-17 None 0.00000000 N N N N N N 2025-08-27 VANGUARD INSTITUTIONAL INDEX FUNDS Ashley Grim Ashley Grim Treasurer