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Contract OI history

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Nov 20, 2026 EXPIRATION

ATKR $55.00 Put

ATKR261120P00055000

Latest saved OI9Oct 23, 2026
Last change-104vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ATKR $55.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 113560 2026-10-02: 113 OI2026-10-05: 113 OI2026-10-06: 113 OI2026-10-07: 113 OI2026-10-08: 113 OI2026-10-09: 113 OI2026-10-13: 113 OI2026-10-14: 113 OI2026-10-16: 113 OI2026-10-23: 9 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

ATKR contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing9-104
Oct 16, 20261130
Oct 14, 20261130
Oct 13, 20261130
Oct 09, 20261130
Oct 08, 20261130
Oct 07, 20261130
Oct 06, 20261130
Oct 05, 20261130
Oct 02, 2026113No prior observation