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Contract OI history

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Apr 16, 2027 EXPIRATION

ATEC $17.50 Call

ATEC270416C00017500

Latest saved OI1Oct 20, 2026
Last change+1vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ATEC $17.50 call open interest history 5 saved observations from 2026-10-09 to 2026-10-20. Exact values and changes are listed in the table below. 10 2026-10-09: 0 OI2026-10-13: 0 OI2026-10-15: 0 OI2026-10-16: 0 OI2026-10-20: 1 OI Oct 09, 2026Oct 20, 2026

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

ATEC contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing1+1
Oct 16, 202600
Oct 15, 202600
Oct 13, 202600
Oct 09, 20260No prior observation