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Contract OI history

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Feb 19, 2027 EXPIRATION

ATEN $40.00 Call

ATEN270219C00040000

Latest saved OI137Oct 21, 2026
Last change-1vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ATEN $40.00 call open interest history 10 saved observations from 2026-10-02 to 2026-10-21. Exact values and changes are listed in the table below. 155770 2026-10-02: 155 OI2026-10-05: 148 OI2026-10-06: 142 OI2026-10-07: 138 OI2026-10-08: 138 OI2026-10-09: 138 OI2026-10-13: 138 OI2026-10-14: 138 OI2026-10-16: 138 OI2026-10-21: 137 OI Oct 02, 2026Oct 21, 2026

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

ATEN contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 21, 2026Viewing137-1
Oct 16, 20261380
Oct 14, 20261380
Oct 13, 20261380
Oct 09, 20261380
Oct 08, 20261380
Oct 07, 2026138-4
Oct 06, 2026142-6
Oct 05, 2026148-7
Oct 02, 2026155No prior observation