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Contract OI history

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Dec 18, 2026 EXPIRATION

ALT $2.50 Call

ALT261218C00002500

Latest saved OI259Oct 20, 2026
Last change+12vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALT $2.50 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. 2591290 2026-10-09: 49 OI2026-10-13: 49 OI2026-10-14: 79 OI2026-10-16: 247 OI2026-10-20: 259 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, 2026Viewing259+12
Oct 16, 2026247+168
Oct 14, 202679+30
Oct 13, 2026490
Oct 09, 202649No prior observation