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Contract OI history

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Dec 18, 2026 EXPIRATION

PSX $220.00 Put

PSX261218P00220000

Latest saved OI1,045Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSX $220.00 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. 1,0555270 2026-10-02: 1,033 OI2026-10-05: 1,033 OI2026-10-06: 1,033 OI2026-10-07: 1,044 OI2026-10-08: 1,047 OI2026-10-09: 1,049 OI2026-10-13: 1,055 OI2026-10-14: 1,055 OI2026-10-15: 1,050 OI2026-10-16: 1,044 OI2026-10-21: 1,044 OI2026-10-23: 1,045 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, 2026Viewing1,045+1
Oct 21, 20261,0440
Oct 16, 20261,044-6
Oct 15, 20261,050-5
Oct 14, 20261,0550
Oct 13, 20261,055+6
Oct 09, 20261,049+2
Oct 08, 20261,047+3
Oct 07, 20261,044+11
Oct 06, 20261,0330
Oct 05, 20261,0330
Oct 02, 20261,033No prior observation