OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

B $41.50 Put

B261023P00041500

Latest saved OI0Oct 23, 2026
Last change-94vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $41.50 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. 94470 2026-10-02: 0 OI2026-10-05: 0 OI2026-10-06: 0 OI2026-10-07: 0 OI2026-10-08: 0 OI2026-10-09: 0 OI2026-10-13: 8 OI2026-10-14: 8 OI2026-10-15: 8 OI2026-10-16: 9 OI2026-10-21: 94 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, 2026Viewing0-94
Oct 21, 202694+85
Oct 16, 20269+1
Oct 15, 202680
Oct 14, 202680
Oct 13, 20268+8
Oct 09, 202600
Oct 08, 202600
Oct 07, 202600
Oct 06, 202600
Oct 05, 202600
Oct 02, 20260No prior observation