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Contract OI history

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Dec 18, 2026 EXPIRATION

PSX $290.00 Put

PSX261218P00290000

Latest saved OI249Oct 23, 2026
Last change-10vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSX $290.00 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. 2591290 2026-10-02: 3 OI2026-10-05: 3 OI2026-10-06: 3 OI2026-10-07: 3 OI2026-10-08: 3 OI2026-10-09: 10 OI2026-10-13: 61 OI2026-10-14: 61 OI2026-10-15: 205 OI2026-10-16: 254 OI2026-10-21: 259 OI2026-10-23: 249 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, 2026Viewing249-10
Oct 21, 2026259+5
Oct 16, 2026254+49
Oct 15, 2026205+144
Oct 14, 2026610
Oct 13, 202661+51
Oct 09, 202610+7
Oct 08, 202630
Oct 07, 202630
Oct 06, 202630
Oct 05, 202630
Oct 02, 20263No prior observation