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Contract OI history

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Dec 18, 2026 EXPIRATION

ALC $50.00 Put

ALC261218P00050000

Latest saved OI135Oct 20, 2026
Last change-1vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ALC $50.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 136680 2026-10-02: 134 OI2026-10-05: 134 OI2026-10-06: 134 OI2026-10-07: 135 OI2026-10-08: 135 OI2026-10-09: 135 OI2026-10-13: 135 OI2026-10-15: 135 OI2026-10-16: 136 OI2026-10-20: 135 OI Oct 02, 2026Oct 20, 2026

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

ALC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing135-1
Oct 16, 2026136+1
Oct 15, 20261350
Oct 13, 20261350
Oct 09, 20261350
Oct 08, 20261350
Oct 07, 2026135+1
Oct 06, 20261340
Oct 05, 20261340
Oct 02, 2026134No prior observation