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Contract OI history

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Dec 18, 2026 EXPIRATION

ATEN $25.00 Put

ATEN261218P00025000

Latest saved OI270Oct 21, 2026
Last change0vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ATEN $25.00 put open interest history 10 saved observations from 2026-10-02 to 2026-10-21. Exact values and changes are listed in the table below. 2721360 2026-10-02: 272 OI2026-10-05: 271 OI2026-10-06: 269 OI2026-10-07: 269 OI2026-10-08: 269 OI2026-10-09: 270 OI2026-10-13: 270 OI2026-10-14: 270 OI2026-10-16: 270 OI2026-10-21: 270 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, 2026Viewing2700
Oct 16, 20262700
Oct 14, 20262700
Oct 13, 20262700
Oct 09, 2026270+1
Oct 08, 20262690
Oct 07, 20262690
Oct 06, 2026269-2
Oct 05, 2026271-1
Oct 02, 2026272No prior observation