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Contract OI history

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Dec 18, 2026 EXPIRATION

ATEC $20.00 Call

ATEC261218C00020000

Latest saved OI245Oct 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 $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. 2451220 2026-10-09: 245 OI2026-10-13: 245 OI2026-10-15: 245 OI2026-10-16: 245 OI2026-10-20: 245 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, 2026Viewing2450
Oct 16, 20262450
Oct 15, 20262450
Oct 13, 20262450
Oct 09, 2026245No prior observation