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Contract OI history

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Dec 18, 2026 EXPIRATION

ATKR $55.00 Put

ATKR261218P00055000

Latest saved OI9Oct 23, 2026
Last change0vs 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. 940 2026-10-02: 9 OI2026-10-05: 9 OI2026-10-06: 9 OI2026-10-07: 9 OI2026-10-08: 9 OI2026-10-09: 9 OI2026-10-13: 9 OI2026-10-14: 9 OI2026-10-16: 9 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, 2026Viewing90
Oct 16, 202690
Oct 14, 202690
Oct 13, 202690
Oct 09, 202690
Oct 08, 202690
Oct 07, 202690
Oct 06, 202690
Oct 05, 202690
Oct 02, 20269No prior observation