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Contract OI history

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Nov 20, 2026 EXPIRATION

ALNY $250.00 Put

ALNY261120P00250000

Latest saved OI303Oct 20, 2026
Last change+5vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALNY $250.00 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. 3031510 2026-10-09: 40 OI2026-10-13: 40 OI2026-10-14: 40 OI2026-10-15: 48 OI2026-10-16: 298 OI2026-10-20: 303 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, 2026Viewing303+5
Oct 16, 2026298+250
Oct 15, 202648+8
Oct 14, 2026400
Oct 13, 2026400
Oct 09, 202640No prior observation