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Contract OI history

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Jan 15, 2027 EXPIRATION

COSM $500.00 Call

COSM270115C00000500

Latest saved OI3,931Oct 23, 2026
Last change-5vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
COSM $500.00 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. 3,9601,9800 2026-10-08: 3,878 OI2026-10-13: 3,952 OI2026-10-14: 3,960 OI2026-10-16: 3,946 OI2026-10-20: 3,936 OI2026-10-23: 3,931 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, 2026Viewing3,931-5
Oct 20, 20263,936-10
Oct 16, 20263,946-14
Oct 14, 20263,960+8
Oct 13, 20263,952+74
Oct 08, 20263,878No prior observation