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Contract OI history

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Nov 20, 2026 EXPIRATION

ALGM $37.50 Call

ALGM261120C00037500

Latest saved OI282Oct 23, 2026
Last change+10vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALGM $37.50 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. 2821410 2026-10-09: 74 OI2026-10-13: 77 OI2026-10-14: 77 OI2026-10-15: 87 OI2026-10-16: 87 OI2026-10-21: 272 OI2026-10-23: 282 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, 2026Viewing282+10
Oct 21, 2026272+185
Oct 16, 2026870
Oct 15, 202687+10
Oct 14, 2026770
Oct 13, 202677+3
Oct 09, 202674No prior observation