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Contract OI history

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Oct 23, 2026 EXPIRATION

B $42.00 Put

B261023P00042000

Latest saved OI0Oct 23, 2026
Last change-87vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $42.00 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. 87430 2026-10-02: 70 OI2026-10-05: 70 OI2026-10-06: 70 OI2026-10-07: 71 OI2026-10-08: 71 OI2026-10-09: 71 OI2026-10-13: 80 OI2026-10-14: 71 OI2026-10-15: 74 OI2026-10-16: 74 OI2026-10-21: 87 OI2026-10-23: 0 OI Oct 02, 2026Oct 23, 2026

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

B contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing0-87
Oct 21, 202687+13
Oct 16, 2026740
Oct 15, 202674+3
Oct 14, 202671-9
Oct 13, 202680+9
Oct 09, 2026710
Oct 08, 2026710
Oct 07, 202671+1
Oct 06, 2026700
Oct 05, 2026700
Oct 02, 202670No prior observation