OITracker Cboe delayed data

Contract OI history

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Jan 15, 2027 EXPIRATION

OR $40.00 Put

OR270115P00040000

Latest saved OI571Oct 23, 2026
Last change+2vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
OR $40.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 5712850 2026-10-02: 551 OI2026-10-05: 551 OI2026-10-07: 561 OI2026-10-08: 569 OI2026-10-09: 569 OI2026-10-13: 569 OI2026-10-14: 569 OI2026-10-16: 569 OI2026-10-20: 569 OI2026-10-23: 571 OI Oct 02, 2026Oct 23, 2026

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

OR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing571+2
Oct 20, 20265690
Oct 16, 20265690
Oct 14, 20265690
Oct 13, 20265690
Oct 09, 20265690
Oct 08, 2026569+8
Oct 07, 2026561+10
Oct 05, 20265510
Oct 02, 2026551No prior observation