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Contract OI history

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Jan 15, 2027 EXPIRATION

ALNY $240.00 Put

ALNY270115P00240000

Latest saved OI156Oct 20, 2026
Last change+10vs previous saved observation
Saved market days6Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ALNY $240.00 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. 156780 2026-10-09: 144 OI2026-10-13: 144 OI2026-10-14: 145 OI2026-10-15: 146 OI2026-10-16: 146 OI2026-10-20: 156 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, 2026Viewing156+10
Oct 16, 20261460
Oct 15, 2026146+1
Oct 14, 2026145+1
Oct 13, 20261440
Oct 09, 2026144No prior observation