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Contract OI history

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Jun 17, 2027 EXPIRATION

ALC $42.50 Put

ALC270617P00042500

Latest saved OI10Oct 20, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ALC $42.50 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. 1050 2026-10-02: 10 OI2026-10-05: 10 OI2026-10-06: 10 OI2026-10-07: 10 OI2026-10-08: 10 OI2026-10-09: 10 OI2026-10-13: 10 OI2026-10-15: 10 OI2026-10-16: 10 OI2026-10-20: 10 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, 2026Viewing100
Oct 16, 2026100
Oct 15, 2026100
Oct 13, 2026100
Oct 09, 2026100
Oct 08, 2026100
Oct 07, 2026100
Oct 06, 2026100
Oct 05, 2026100
Oct 02, 202610No prior observation