OITracker Cboe delayed data

Contract OI history

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Oct 30, 2026 EXPIRATION

PSX $275.00 Put

PSX261030P00275000

Latest saved OI330Oct 23, 2026
Last change+310vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSX $275.00 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. 3301650 2026-10-02: 1 OI2026-10-05: 1 OI2026-10-06: 1 OI2026-10-07: 1 OI2026-10-08: 1 OI2026-10-09: 2 OI2026-10-13: 2 OI2026-10-14: 2 OI2026-10-15: 2 OI2026-10-16: 13 OI2026-10-21: 20 OI2026-10-23: 330 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, 2026Viewing330+310
Oct 21, 202620+7
Oct 16, 202613+11
Oct 15, 202620
Oct 14, 202620
Oct 13, 202620
Oct 09, 20262+1
Oct 08, 202610
Oct 07, 202610
Oct 06, 202610
Oct 05, 202610
Oct 02, 20261No prior observation