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Contract OI history

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Apr 16, 2027 EXPIRATION

COSM $2.50 Call

COSM270416C00002500

Latest saved OI720Oct 23, 2026
Last change-120vs 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. 8404200 2026-10-08: 735 OI2026-10-13: 737 OI2026-10-14: 737 OI2026-10-16: 737 OI2026-10-20: 840 OI2026-10-23: 720 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, 2026Viewing720-120
Oct 20, 2026840+103
Oct 16, 20267370
Oct 14, 20267370
Oct 13, 2026737+2
Oct 08, 2026735No prior observation