OITracker Cboe delayed data

Contract OI history

Back to XXI

Nov 20, 2026 EXPIRATION

XXI $5.00 Put

XXI261120P00005000

Latest saved OI367Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
XXI $5.00 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. 3671830 2026-10-02: 0 OI2026-10-05: 3 OI2026-10-06: 3 OI2026-10-07: 3 OI2026-10-08: 3 OI2026-10-09: 203 OI2026-10-13: 311 OI2026-10-14: 313 OI2026-10-15: 314 OI2026-10-16: 314 OI2026-10-21: 366 OI2026-10-23: 367 OI Oct 02, 2026Oct 23, 2026

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

XXI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026367+1
Oct 21, 2026Viewing366+52
Oct 16, 20263140
Oct 15, 2026314+1
Oct 14, 2026313+2
Oct 13, 2026311+108
Oct 09, 2026203+200
Oct 08, 202630
Oct 07, 202630
Oct 06, 202630
Oct 05, 20263+3
Oct 02, 20260No prior observation