OITracker Cboe delayed data

Contract OI history

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Nov 20, 2026 EXPIRATION

B $50.00 Put

B261120P00050000

Latest saved OI0Oct 23, 2026
Last change-58vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
B $50.00 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. 58290 2026-10-02: 56 OI2026-10-05: 57 OI2026-10-06: 57 OI2026-10-07: 57 OI2026-10-08: 57 OI2026-10-09: 57 OI2026-10-13: 57 OI2026-10-14: 57 OI2026-10-15: 57 OI2026-10-16: 57 OI2026-10-21: 58 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, 2026Viewing0-58
Oct 21, 202658+1
Oct 16, 2026570
Oct 15, 2026570
Oct 14, 2026570
Oct 13, 2026570
Oct 09, 2026570
Oct 08, 2026570
Oct 07, 2026570
Oct 06, 2026570
Oct 05, 202657+1
Oct 02, 202656No prior observation