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Contract OI history

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Jun 17, 2027 EXPIRATION

ATRO $50.00 Put

ATRO270617P00050000

Latest saved OI5Oct 20, 2026
Last change+3vs previous saved observation
Saved market days2Oct 16, 2026 onwards
Daily open interest Hover a point for its date and OI
ATRO $50.00 put open interest history 2 saved observations from 2026-10-16 to 2026-10-20. Exact values and changes are listed in the table below. 520 2026-10-16: 2 OI2026-10-20: 5 OI Oct 16, 2026Oct 20, 2026

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

ATRO contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing5+3
Oct 16, 20262No prior observation