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Contract OI history

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Dec 15, 2028 EXPIRATION

ALGM $17.50 Call

ALGM281215C00017500

Latest saved OI84Oct 23, 2026
Last change+14vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALGM $17.50 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. 84420 2026-10-09: 70 OI2026-10-13: 70 OI2026-10-14: 70 OI2026-10-15: 70 OI2026-10-16: 70 OI2026-10-21: 70 OI2026-10-23: 84 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, 2026Viewing84+14
Oct 21, 2026700
Oct 16, 2026700
Oct 15, 2026700
Oct 14, 2026700
Oct 13, 2026700
Oct 09, 202670No prior observation