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Contract OI history

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Jan 21, 2028 EXPIRATION

ALC $32.50 Put

ALC280121P00032500

Latest saved OI36Oct 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 $32.50 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. 36180 2026-10-02: 15 OI2026-10-05: 20 OI2026-10-06: 24 OI2026-10-07: 28 OI2026-10-08: 30 OI2026-10-09: 31 OI2026-10-13: 32 OI2026-10-15: 36 OI2026-10-16: 36 OI2026-10-20: 36 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, 2026Viewing360
Oct 16, 2026360
Oct 15, 202636+4
Oct 13, 202632+1
Oct 09, 202631+1
Oct 08, 202630+2
Oct 07, 202628+4
Oct 06, 202624+4
Oct 05, 202620+5
Oct 02, 202615No prior observation