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Contract OI history

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Dec 18, 2026 EXPIRATION

ATEC $10.00 Put

ATEC261218P00010000

Latest saved OI25Oct 20, 2026
Last change+20vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ATEC $10.00 put open interest history 5 saved observations from 2026-10-09 to 2026-10-20. Exact values and changes are listed in the table below. 25120 2026-10-09: 5 OI2026-10-13: 5 OI2026-10-15: 5 OI2026-10-16: 5 OI2026-10-20: 25 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, 2026Viewing25+20
Oct 16, 202650
Oct 15, 202650
Oct 13, 202650
Oct 09, 20265No prior observation