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Contract OI history

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Nov 20, 2026 EXPIRATION

ALC $57.50 Put

ALC261120P00057500

Latest saved OI329Oct 20, 2026
Last change+30vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ALC $57.50 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. 3291640 2026-10-02: 235 OI2026-10-05: 235 OI2026-10-06: 243 OI2026-10-07: 243 OI2026-10-08: 243 OI2026-10-09: 243 OI2026-10-13: 245 OI2026-10-15: 247 OI2026-10-16: 299 OI2026-10-20: 329 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, 2026Viewing329+30
Oct 16, 2026299+52
Oct 15, 2026247+2
Oct 13, 2026245+2
Oct 09, 20262430
Oct 08, 20262430
Oct 07, 20262430
Oct 06, 2026243+8
Oct 05, 20262350
Oct 02, 2026235No prior observation