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Contract OI history

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Dec 18, 2026 EXPIRATION

CENX $37.50 Call

CENX261218C00037500

Latest saved OI5,724Oct 23, 2026
Last change+5,684vs previous saved observation
Saved market days4Oct 14, 2026 onwards
Daily open interest Hover a point for its date and OI
CENX $37.50 call open interest history 4 saved observations from 2026-10-14 to 2026-10-23. Exact values and changes are listed in the table below. 5,7242,8620 2026-10-14: 0 OI2026-10-16: 0 OI2026-10-21: 40 OI2026-10-23: 5,724 OI Oct 14, 2026Oct 23, 2026

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

CENX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing5,724+5,684
Oct 21, 202640+40
Oct 16, 202600
Oct 14, 20260No prior observation