OITracker Cboe delayed data

Contract OI history

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May 21, 2027 EXPIRATION

P $100.00 Put

P270521P00100000

Latest saved OI79Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
P $100.00 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. 84420 2026-10-02: 81 OI2026-10-05: 81 OI2026-10-06: 84 OI2026-10-07: 83 OI2026-10-08: 83 OI2026-10-09: 82 OI2026-10-13: 81 OI2026-10-14: 79 OI2026-10-15: 80 OI2026-10-16: 76 OI2026-10-21: 78 OI2026-10-23: 79 OI Oct 02, 2026Oct 23, 2026

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

P contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 202679+1
Oct 21, 2026Viewing78+2
Oct 16, 202676-4
Oct 15, 202680+1
Oct 14, 202679-2
Oct 13, 202681-1
Oct 09, 202682-1
Oct 08, 2026830
Oct 07, 202683-1
Oct 06, 202684+3
Oct 05, 2026810
Oct 02, 202681No prior observation