OITracker Cboe delayed data

Contract OI history

Back to COSM

Nov 20, 2026 EXPIRATION

COSM $1000.00 Call

COSM261120C00001000

Latest saved OI195Oct 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 $1000.00 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. 195970 2026-10-08: 189 OI2026-10-13: 190 OI2026-10-14: 190 OI2026-10-16: 195 OI2026-10-20: 195 OI2026-10-23: 195 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, 2026Viewing1950
Oct 20, 20261950
Oct 16, 2026195+5
Oct 14, 20261900
Oct 13, 2026190+1
Oct 08, 2026189No prior observation