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Contract OI history

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Feb 19, 2027 EXPIRATION

CTMX $4.00 Call

CTMX270219C00004000

Latest saved OI272Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CTMX $4.00 call open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 2721360 2026-10-08: 269 OI2026-10-09: 269 OI2026-10-13: 270 OI2026-10-14: 271 OI2026-10-16: 271 OI2026-10-21: 272 OI2026-10-23: 272 OI Oct 08, 2026Oct 23, 2026

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

CTMX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing2720
Oct 21, 2026272+1
Oct 16, 20262710
Oct 14, 2026271+1
Oct 13, 2026270+1
Oct 09, 20262690
Oct 08, 2026269No prior observation