OITracker Cboe delayed data

Contract OI history

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Feb 19, 2027 EXPIRATION

CALM $40.00 Call

CALM270219C00040000

Latest saved OI275Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CALM $40.00 call open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 2751370 2026-10-08: 275 OI2026-10-09: 275 OI2026-10-13: 275 OI2026-10-14: 275 OI2026-10-16: 275 OI2026-10-20: 275 OI2026-10-23: 275 OI Oct 08, 2026Oct 23, 2026

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

CALM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2750
Oct 20, 20262750
Oct 16, 20262750
Oct 14, 20262750
Oct 13, 20262750
Oct 09, 20262750
Oct 08, 2026275No prior observation