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Contract OI history

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Jan 15, 2027 EXPIRATION

ATEC $12.50 Put

ATEC270115P00012500

Latest saved OI114Oct 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 $12.50 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. 114570 2026-10-09: 114 OI2026-10-13: 114 OI2026-10-15: 114 OI2026-10-16: 114 OI2026-10-20: 114 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, 2026Viewing1140
Oct 16, 20261140
Oct 15, 20261140
Oct 13, 20261140
Oct 09, 2026114No prior observation