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Contract OI history

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Nov 20, 2026 EXPIRATION

CENX $30.00 Put

CENX261120P00030000

Latest saved OI783Oct 23, 2026
Last change+2vs previous saved observation
Saved market days7Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
CENX $30.00 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. 7833910 2026-10-08: 714 OI2026-10-09: 714 OI2026-10-13: 686 OI2026-10-14: 688 OI2026-10-16: 740 OI2026-10-21: 781 OI2026-10-23: 783 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, 2026Viewing783+2
Oct 21, 2026781+41
Oct 16, 2026740+52
Oct 14, 2026688+2
Oct 13, 2026686-28
Oct 09, 20267140
Oct 08, 2026714No prior observation