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Contract OI history

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Nov 20, 2026 EXPIRATION

PSX $270.00 Put

PSX261120P00270000

Latest saved OI395Oct 23, 2026
Last change-3vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSX $270.00 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. 3981990 2026-10-02: 317 OI2026-10-05: 317 OI2026-10-06: 312 OI2026-10-07: 332 OI2026-10-08: 335 OI2026-10-09: 361 OI2026-10-13: 380 OI2026-10-14: 380 OI2026-10-15: 386 OI2026-10-16: 392 OI2026-10-21: 398 OI2026-10-23: 395 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, 2026Viewing395-3
Oct 21, 2026398+6
Oct 16, 2026392+6
Oct 15, 2026386+6
Oct 14, 20263800
Oct 13, 2026380+19
Oct 09, 2026361+26
Oct 08, 2026335+3
Oct 07, 2026332+20
Oct 06, 2026312-5
Oct 05, 20263170
Oct 02, 2026317No prior observation