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Contract OI history

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Nov 20, 2026 EXPIRATION

ATEC $7.50 Put

ATEC261120P00007500

Latest saved OI422Oct 20, 2026
Last change+254vs previous saved observation
Saved market days5Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
ATEC $7.50 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. 4222110 2026-10-09: 12 OI2026-10-13: 82 OI2026-10-15: 168 OI2026-10-16: 168 OI2026-10-20: 422 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, 2026Viewing422+254
Oct 16, 20261680
Oct 15, 2026168+86
Oct 13, 202682+70
Oct 09, 202612No prior observation