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Contract OI history

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Mar 19, 2027 EXPIRATION

ALNY $250.00 Put

ALNY270319P00250000

Latest saved OI476Oct 20, 2026
Last change+6vs 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. 4762380 2026-10-09: 225 OI2026-10-13: 225 OI2026-10-14: 225 OI2026-10-15: 225 OI2026-10-16: 470 OI2026-10-20: 476 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, 2026Viewing476+6
Oct 16, 2026470+245
Oct 15, 20262250
Oct 14, 20262250
Oct 13, 20262250
Oct 09, 2026225No prior observation