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Contract OI history

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Nov 20, 2026 EXPIRATION

ALM $17.50 Put

ALM261120P00017500

Latest saved OI149Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALM $17.50 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. 155770 2026-10-09: 154 OI2026-10-13: 155 OI2026-10-14: 155 OI2026-10-15: 154 OI2026-10-16: 154 OI2026-10-21: 151 OI2026-10-23: 149 OI Oct 09, 2026Oct 23, 2026

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

ALM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing149-2
Oct 21, 2026151-3
Oct 16, 20261540
Oct 15, 2026154-1
Oct 14, 20261550
Oct 13, 2026155+1
Oct 09, 2026154No prior observation