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Contract OI history

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Jan 15, 2027 EXPIRATION

CPIX $3.50 Call

CPIX270115C00003500

Latest saved OI321Oct 23, 2026
Last change-15vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CPIX $3.50 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. 3361680 2026-10-08: 335 OI2026-10-13: 336 OI2026-10-14: 336 OI2026-10-16: 336 OI2026-10-20: 336 OI2026-10-23: 321 OI Oct 08, 2026Oct 23, 2026

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

CPIX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing321-15
Oct 20, 20263360
Oct 16, 20263360
Oct 14, 20263360
Oct 13, 2026336+1
Oct 08, 2026335No prior observation