OITracker Cboe delayed data

Contract OI history

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Dec 18, 2026 EXPIRATION

IART $22.50 Call

IART261218C00022500

Latest saved OI418Oct 20, 2026
Last change+4vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
IART $22.50 call open interest history 6 saved observations from 2026-10-08 to 2026-10-20. Exact values and changes are listed in the table below. 4182090 2026-10-08: 414 OI2026-10-09: 414 OI2026-10-13: 414 OI2026-10-14: 414 OI2026-10-16: 414 OI2026-10-20: 418 OI Oct 08, 2026Oct 20, 2026

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

IART contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing418+4
Oct 16, 20264140
Oct 14, 20264140
Oct 13, 20264140
Oct 09, 20264140
Oct 08, 2026414No prior observation