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Contract OI history

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Dec 18, 2026 EXPIRATION

ATEC $22.50 Call

ATEC261218C00022500

Latest saved OI315Oct 20, 2026
Last change0vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ATEC $22.50 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. 3151570 2026-10-09: 315 OI2026-10-13: 315 OI2026-10-15: 315 OI2026-10-16: 315 OI2026-10-20: 315 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, 2026Viewing3150
Oct 16, 20263150
Oct 15, 20263150
Oct 13, 20263150
Oct 09, 2026315No prior observation