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Contract OI history

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Nov 20, 2026 EXPIRATION

ALC $55.00 Put

ALC261120P00055000

Latest saved OI411Oct 20, 2026
Last change+4vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ALC $55.00 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. 4112050 2026-10-02: 390 OI2026-10-05: 391 OI2026-10-06: 391 OI2026-10-07: 391 OI2026-10-08: 391 OI2026-10-09: 391 OI2026-10-13: 391 OI2026-10-15: 391 OI2026-10-16: 407 OI2026-10-20: 411 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, 2026Viewing411+4
Oct 16, 2026407+16
Oct 15, 20263910
Oct 13, 20263910
Oct 09, 20263910
Oct 08, 20263910
Oct 07, 20263910
Oct 06, 20263910
Oct 05, 2026391+1
Oct 02, 2026390No prior observation