NPORT-P false 0001026144 XXXXXXXX S000003118 C000099169 C000008451 C000008452 C000201957 BlackRock Index Funds, Inc. 811-07899 0001026144 549300R0LV8YE1DSQ620 100 Bellevue Parkway Wilmington 19809 800-441-7762 iShares Russell 2000 Small-Cap Index Fund S000003118 549300URA4LL162MRE56 2025-12-31 2025-06-30 N 2758175110.11 1351748.77 2756823361.34 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 0.00000000 N BlackRock Index Funds, Inc. 549300R0LV8YE1DSQ620 000000000 102933341.05000000 NS USD 2716853483.68000000 98.55014731010 Long EC RF US N N/A N N N 2025-07-31 BlackRock Index Funds, Inc. Chuck Pulsfort Chuck Pulsfort Assistant Treasurer