OITracker Cboe delayed data

Contract OI history

Back to PSX

Jan 21, 2028 EXPIRATION

PSX $270.00 Put

PSX280121P00270000

Latest saved OI234Oct 23, 2026
Last change0vs 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. 2341170 2026-10-02: 233 OI2026-10-05: 233 OI2026-10-06: 233 OI2026-10-07: 233 OI2026-10-08: 233 OI2026-10-09: 233 OI2026-10-13: 234 OI2026-10-14: 234 OI2026-10-15: 234 OI2026-10-16: 234 OI2026-10-21: 234 OI2026-10-23: 234 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, 2026Viewing2340
Oct 21, 20262340
Oct 16, 20262340
Oct 15, 20262340
Oct 14, 20262340
Oct 13, 2026234+1
Oct 09, 20262330
Oct 08, 20262330
Oct 07, 20262330
Oct 06, 20262330
Oct 05, 20262330
Oct 02, 2026233No prior observation