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Contract OI history

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Nov 20, 2026 EXPIRATION

COSM $500.00 Call

COSM261120C00000500

Latest saved OI1,000Oct 23, 2026
Last change+1vs 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. 1,0005000 2026-10-08: 988 OI2026-10-13: 990 OI2026-10-14: 998 OI2026-10-16: 999 OI2026-10-20: 999 OI2026-10-23: 1,000 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, 2026Viewing1,000+1
Oct 20, 20269990
Oct 16, 2026999+1
Oct 14, 2026998+8
Oct 13, 2026990+2
Oct 08, 2026988No prior observation