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Contract OI history

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Nov 20, 2026 EXPIRATION

ALGM $32.50 Put

ALGM261120P00032500

Latest saved OI247Oct 23, 2026
Last change+1vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALGM $32.50 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2471230 2026-10-09: 138 OI2026-10-13: 128 OI2026-10-14: 128 OI2026-10-15: 236 OI2026-10-16: 235 OI2026-10-21: 246 OI2026-10-23: 247 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, 2026Viewing247+1
Oct 21, 2026246+11
Oct 16, 2026235-1
Oct 15, 2026236+108
Oct 14, 20261280
Oct 13, 2026128-10
Oct 09, 2026138No prior observation