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Contract OI history

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Jan 21, 2028 EXPIRATION

ATEC $20.00 Call

ATEC280121C00020000

Latest saved OI85Oct 20, 2026
Last change+5vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ATEC $20.00 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. 85420 2026-10-09: 80 OI2026-10-13: 80 OI2026-10-15: 80 OI2026-10-16: 80 OI2026-10-20: 85 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, 2026Viewing85+5
Oct 16, 2026800
Oct 15, 2026800
Oct 13, 2026800
Oct 09, 202680No prior observation