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Contract OI history

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Dec 18, 2026 EXPIRATION

CENX $40.00 Call

CENX261218C00040000

Latest saved OI227Oct 23, 2026
Last change+3vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CENX $40.00 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. 1,0965480 2026-10-08: 63 OI2026-10-09: 63 OI2026-10-13: 1,079 OI2026-10-14: 1,096 OI2026-10-16: 219 OI2026-10-21: 224 OI2026-10-23: 227 OI Oct 08, 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, 2026Viewing227+3
Oct 21, 2026224+5
Oct 16, 2026219-877
Oct 14, 20261,096+17
Oct 13, 20261,079+1,016
Oct 09, 2026630
Oct 08, 202663No prior observation