OITracker Cboe delayed data

Contract OI history

Back to POST

Dec 18, 2026 EXPIRATION

POST $85.00 Put

POST261218P00085000

Latest saved OI357Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
POST $85.00 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. 3601800 2026-10-02: 360 OI2026-10-05: 360 OI2026-10-06: 358 OI2026-10-07: 358 OI2026-10-08: 358 OI2026-10-09: 358 OI2026-10-13: 358 OI2026-10-14: 358 OI2026-10-15: 357 OI2026-10-16: 357 OI2026-10-21: 357 OI2026-10-23: 357 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

POST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3570
Oct 21, 20263570
Oct 16, 20263570
Oct 15, 2026357-1
Oct 14, 20263580
Oct 13, 20263580
Oct 09, 20263580
Oct 08, 20263580
Oct 07, 20263580
Oct 06, 2026358-2
Oct 05, 20263600
Oct 02, 2026360No prior observation