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Contract OI history

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Dec 18, 2026 EXPIRATION

ATEC $17.50 Call

ATEC261218C00017500

Latest saved OI43Oct 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 $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. 43210 2026-10-09: 43 OI2026-10-13: 43 OI2026-10-15: 43 OI2026-10-16: 43 OI2026-10-20: 43 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, 2026Viewing430
Oct 16, 2026430
Oct 15, 2026430
Oct 13, 2026430
Oct 09, 202643No prior observation