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Contract OI history

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Nov 20, 2026 EXPIRATION

CENX $25.00 Put

CENX261120P00025000

Latest saved OI420Oct 23, 2026
Last change0vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CENX $25.00 put open interest history 7 saved observations from 2026-10-08 to 2026-10-23. Exact values and changes are listed in the table below. 4202100 2026-10-08: 133 OI2026-10-09: 133 OI2026-10-13: 135 OI2026-10-14: 135 OI2026-10-16: 135 OI2026-10-21: 420 OI2026-10-23: 420 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, 2026Viewing4200
Oct 21, 2026420+285
Oct 16, 20261350
Oct 14, 20261350
Oct 13, 2026135+2
Oct 09, 20261330
Oct 08, 2026133No prior observation