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Contract OI history

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Jan 21, 2028 EXPIRATION

PSX $300.00 Put

PSX280121P00300000

Latest saved OI297Oct 23, 2026
Last change+28vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PSX $300.00 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. 2971480 2026-10-02: 251 OI2026-10-05: 251 OI2026-10-06: 251 OI2026-10-07: 251 OI2026-10-08: 251 OI2026-10-09: 251 OI2026-10-13: 252 OI2026-10-14: 252 OI2026-10-15: 252 OI2026-10-16: 261 OI2026-10-21: 269 OI2026-10-23: 297 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, 2026Viewing297+28
Oct 21, 2026269+8
Oct 16, 2026261+9
Oct 15, 20262520
Oct 14, 20262520
Oct 13, 2026252+1
Oct 09, 20262510
Oct 08, 20262510
Oct 07, 20262510
Oct 06, 20262510
Oct 05, 20262510
Oct 02, 2026251No prior observation