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Contract OI history

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Jan 15, 2027 EXPIRATION

ALNY $155.00 Put

ALNY270115P00155000

Latest saved OI342Oct 20, 2026
Last change0vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALNY $155.00 put open interest history 6 saved observations from 2026-10-09 to 2026-10-20. Exact values and changes are listed in the table below. 3421710 2026-10-09: 333 OI2026-10-13: 341 OI2026-10-14: 342 OI2026-10-15: 342 OI2026-10-16: 342 OI2026-10-20: 342 OI Oct 09, 2026Oct 20, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ALNY contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing3420
Oct 16, 20263420
Oct 15, 20263420
Oct 14, 2026342+1
Oct 13, 2026341+8
Oct 09, 2026333No prior observation