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Contract OI history

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Nov 20, 2026 EXPIRATION

ALT $3.50 Call

ALT261120C00003500

Latest saved OI2,147Oct 20, 2026
Last change-80vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALT $3.50 call open interest history 5 saved observations from 2026-10-09 to 2026-10-20. Exact values and changes are listed in the table below. 2,2841,1420 2026-10-09: 2,284 OI2026-10-13: 2,262 OI2026-10-14: 2,227 OI2026-10-16: 2,227 OI2026-10-20: 2,147 OI Oct 09, 2026Oct 20, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ALT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing2,147-80
Oct 16, 20262,2270
Oct 14, 20262,227-35
Oct 13, 20262,262-22
Oct 09, 20262,284No prior observation