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Contract OI history

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Jun 17, 2027 EXPIRATION

ALC $72.50 Put

ALC270617P00072500

Latest saved OI183Oct 20, 2026
Last change+85vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ALC $72.50 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. 183910 2026-10-02: 78 OI2026-10-05: 78 OI2026-10-06: 78 OI2026-10-07: 78 OI2026-10-08: 78 OI2026-10-09: 88 OI2026-10-13: 98 OI2026-10-15: 98 OI2026-10-16: 98 OI2026-10-20: 183 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, 2026Viewing183+85
Oct 16, 2026980
Oct 15, 2026980
Oct 13, 202698+10
Oct 09, 202688+10
Oct 08, 2026780
Oct 07, 2026780
Oct 06, 2026780
Oct 05, 2026780
Oct 02, 202678No prior observation