OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

PSX $230.00 Put

PSX261218P00230000

Latest saved OI308Oct 23, 2026
Last change-6vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSX $230.00 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. 3521760 2026-10-02: 352 OI2026-10-05: 352 OI2026-10-06: 303 OI2026-10-07: 312 OI2026-10-08: 313 OI2026-10-09: 313 OI2026-10-13: 314 OI2026-10-14: 314 OI2026-10-15: 314 OI2026-10-16: 314 OI2026-10-21: 314 OI2026-10-23: 308 OI Oct 02, 2026Oct 23, 2026

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

PSX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing308-6
Oct 21, 20263140
Oct 16, 20263140
Oct 15, 20263140
Oct 14, 20263140
Oct 13, 2026314+1
Oct 09, 20263130
Oct 08, 2026313+1
Oct 07, 2026312+9
Oct 06, 2026303-49
Oct 05, 20263520
Oct 02, 2026352No prior observation