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Contract OI history

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Oct 30, 2026 EXPIRATION

PSX $255.00 Put

PSX261030P00255000

Latest saved OI54Oct 23, 2026
Last change+15vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSX $255.00 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. 54270 2026-10-02: 5 OI2026-10-05: 6 OI2026-10-06: 9 OI2026-10-07: 10 OI2026-10-08: 10 OI2026-10-09: 34 OI2026-10-13: 38 OI2026-10-14: 38 OI2026-10-15: 37 OI2026-10-16: 37 OI2026-10-21: 39 OI2026-10-23: 54 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, 2026Viewing54+15
Oct 21, 202639+2
Oct 16, 2026370
Oct 15, 202637-1
Oct 14, 2026380
Oct 13, 202638+4
Oct 09, 202634+24
Oct 08, 2026100
Oct 07, 202610+1
Oct 06, 20269+3
Oct 05, 20266+1
Oct 02, 20265No prior observation