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Contract OI history

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Nov 20, 2026 EXPIRATION

CENX $35.00 Put

CENX261120P00035000

Latest saved OI531Oct 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 $35.00 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. 5312650 2026-10-08: 395 OI2026-10-09: 390 OI2026-10-13: 412 OI2026-10-14: 431 OI2026-10-16: 503 OI2026-10-21: 529 OI2026-10-23: 531 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, 2026Viewing531+2
Oct 21, 2026529+26
Oct 16, 2026503+72
Oct 14, 2026431+19
Oct 13, 2026412+22
Oct 09, 2026390-5
Oct 08, 2026395No prior observation