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Contract OI history

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Dec 18, 2026 EXPIRATION

ATEN $40.00 Call

ATEN261218C00040000

Latest saved OI369Oct 21, 2026
Last change+4vs 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. 3691840 2026-10-02: 365 OI2026-10-05: 365 OI2026-10-06: 365 OI2026-10-07: 365 OI2026-10-08: 365 OI2026-10-09: 365 OI2026-10-13: 365 OI2026-10-14: 365 OI2026-10-16: 365 OI2026-10-21: 369 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, 2026Viewing369+4
Oct 16, 20263650
Oct 14, 20263650
Oct 13, 20263650
Oct 09, 20263650
Oct 08, 20263650
Oct 07, 20263650
Oct 06, 20263650
Oct 05, 20263650
Oct 02, 2026365No prior observation