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Contract OI history

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Jan 15, 2027 EXPIRATION

COSM $2.50 Call

COSM270115C00002500

Latest saved OI1,756Oct 23, 2026
Last change0vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
COSM $2.50 call open interest history 6 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 1,7608800 2026-10-08: 1,760 OI2026-10-13: 1,756 OI2026-10-14: 1,756 OI2026-10-16: 1,756 OI2026-10-20: 1,756 OI2026-10-23: 1,756 OI Oct 08, 2026Oct 23, 2026

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

COSM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,7560
Oct 20, 20261,7560
Oct 16, 20261,7560
Oct 14, 20261,7560
Oct 13, 20261,756-4
Oct 08, 20261,760No prior observation