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Contract OI history

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Oct 23, 2026 EXPIRATION

BLK $1010.00 Put

BLK261023P01010000

Latest saved OI68Oct 23, 2026
Last change+3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
BLK $1010.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 70350 2026-10-02: 2 OI2026-10-05: 2 OI2026-10-06: 2 OI2026-10-07: 2 OI2026-10-08: 52 OI2026-10-09: 52 OI2026-10-13: 70 OI2026-10-14: 70 OI2026-10-15: 70 OI2026-10-16: 70 OI2026-10-21: 65 OI2026-10-23: 68 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

BLK contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing68+3
Oct 21, 202665-5
Oct 16, 2026700
Oct 15, 2026700
Oct 14, 2026700
Oct 13, 202670+18
Oct 09, 2026520
Oct 08, 202652+50
Oct 07, 202620
Oct 06, 202620
Oct 05, 202620
Oct 02, 20262No prior observation