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Contract OI history

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Nov 20, 2026 EXPIRATION

ALGM $40.00 Call

ALGM261120C00040000

Latest saved OI1,081Oct 23, 2026
Last change+19vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALGM $40.00 call open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,0815400 2026-10-09: 252 OI2026-10-13: 250 OI2026-10-14: 250 OI2026-10-15: 249 OI2026-10-16: 236 OI2026-10-21: 1,062 OI2026-10-23: 1,081 OI Oct 09, 2026Oct 23, 2026

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

ALGM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing1,081+19
Oct 21, 20261,062+826
Oct 16, 2026236-13
Oct 15, 2026249-1
Oct 14, 20262500
Oct 13, 2026250-2
Oct 09, 2026252No prior observation