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Contract OI history

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Dec 18, 2026 EXPIRATION

ALT $3.50 Call

ALT261218C00003500

Latest saved OI1,096Oct 20, 2026
Last change+26vs 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. 1,0965480 2026-10-09: 1,067 OI2026-10-13: 1,070 OI2026-10-14: 1,076 OI2026-10-16: 1,070 OI2026-10-20: 1,096 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, 2026Viewing1,096+26
Oct 16, 20261,070-6
Oct 14, 20261,076+6
Oct 13, 20261,070+3
Oct 09, 20261,067No prior observation