OITracker Cboe delayed data

Contract OI history

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Oct 23, 2026 EXPIRATION

B $37.00 Put

B261023P00037000

Latest saved OI263Oct 23, 2026
Last change-2vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $37.00 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. 4332160 2026-10-02: 304 OI2026-10-05: 333 OI2026-10-06: 333 OI2026-10-07: 334 OI2026-10-08: 338 OI2026-10-09: 338 OI2026-10-13: 338 OI2026-10-14: 342 OI2026-10-15: 433 OI2026-10-16: 430 OI2026-10-21: 265 OI2026-10-23: 263 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, 2026Viewing263-2
Oct 21, 2026265-165
Oct 16, 2026430-3
Oct 15, 2026433+91
Oct 14, 2026342+4
Oct 13, 20263380
Oct 09, 20263380
Oct 08, 2026338+4
Oct 07, 2026334+1
Oct 06, 20263330
Oct 05, 2026333+29
Oct 02, 2026304No prior observation