OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

PSX $240.00 Put

PSX270115P00240000

Latest saved OI79Oct 23, 2026
Last change+4vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSX $240.00 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. 79390 2026-10-02: 71 OI2026-10-05: 71 OI2026-10-06: 71 OI2026-10-07: 71 OI2026-10-08: 71 OI2026-10-09: 72 OI2026-10-13: 72 OI2026-10-14: 72 OI2026-10-15: 70 OI2026-10-16: 73 OI2026-10-21: 75 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.

PSX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing79+4
Oct 21, 202675+2
Oct 16, 202673+3
Oct 15, 202670-2
Oct 14, 2026720
Oct 13, 2026720
Oct 09, 202672+1
Oct 08, 2026710
Oct 07, 2026710
Oct 06, 2026710
Oct 05, 2026710
Oct 02, 202671No prior observation