OITracker Cboe delayed data

Contract OI history

Back to XXI

Jan 15, 2027 EXPIRATION

XXI $2.50 Put

XXI270115P00002500

Latest saved OI1,705Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
XXI $2.50 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. 1,7058520 2026-10-02: 1,705 OI2026-10-05: 1,705 OI2026-10-06: 1,705 OI2026-10-07: 1,705 OI2026-10-08: 1,705 OI2026-10-09: 1,705 OI2026-10-13: 1,705 OI2026-10-14: 1,705 OI2026-10-15: 1,705 OI2026-10-16: 1,705 OI2026-10-21: 1,705 OI2026-10-23: 1,705 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, 20261,7050
Oct 21, 2026Viewing1,7050
Oct 16, 20261,7050
Oct 15, 20261,7050
Oct 14, 20261,7050
Oct 13, 20261,7050
Oct 09, 20261,7050
Oct 08, 20261,7050
Oct 07, 20261,7050
Oct 06, 20261,7050
Oct 05, 20261,7050
Oct 02, 20261,705No prior observation