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Contract OI history

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Nov 20, 2026 EXPIRATION

CENX $32.50 Put

CENX261120P00032500

Latest saved OI172Oct 23, 2026
Last change+57vs previous saved observation
Saved market days4Oct 14, 2026 onwards
Daily open interest Hover a point for its date and OI
CENX $32.50 put open interest history 4 saved observations from 2026-10-14 to 2026-10-23. Exact values and changes are listed in the table below. 172860 2026-10-14: 0 OI2026-10-16: 76 OI2026-10-21: 115 OI2026-10-23: 172 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, 2026Viewing172+57
Oct 21, 2026115+39
Oct 16, 202676+76
Oct 14, 20260No prior observation