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Contract OI history

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Apr 16, 2027 EXPIRATION

CPIX $17.50 Call

CPIX270416C00017500

Latest saved OI1,178Oct 23, 2026
Last change+150vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CPIX $17.50 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. 1,1785890 2026-10-08: 855 OI2026-10-13: 950 OI2026-10-14: 950 OI2026-10-16: 1,028 OI2026-10-20: 1,028 OI2026-10-23: 1,178 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, 2026Viewing1,178+150
Oct 20, 20261,0280
Oct 16, 20261,028+78
Oct 14, 20269500
Oct 13, 2026950+95
Oct 08, 2026855No prior observation