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Contract OI history

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Oct 23, 2026 EXPIRATION

BLK $985.00 Put

BLK261023P00985000

Latest saved OI3Oct 23, 2026
Last change+2vs previous saved observation
Saved market days6Oct 13, 2026 onwards
Daily open interest Hover a point for its date and OI
BLK $985.00 put open interest history 6 saved observations from 2026-10-13 to 2026-10-23. Exact values and changes are listed in the table below. 310 2026-10-13: 0 OI2026-10-14: 0 OI2026-10-15: 0 OI2026-10-16: 1 OI2026-10-21: 1 OI2026-10-23: 3 OI Oct 13, 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, 2026Viewing3+2
Oct 21, 202610
Oct 16, 20261+1
Oct 15, 202600
Oct 14, 202600
Oct 13, 20260No prior observation