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Contract OI history

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Nov 20, 2026 EXPIRATION

ATEN $25.00 Put

ATEN261120P00025000

Latest saved OI285Oct 21, 2026
Last change+3vs 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. 2851420 2026-10-02: 261 OI2026-10-05: 261 OI2026-10-06: 261 OI2026-10-07: 261 OI2026-10-08: 261 OI2026-10-09: 261 OI2026-10-13: 281 OI2026-10-14: 281 OI2026-10-16: 282 OI2026-10-21: 285 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, 2026Viewing285+3
Oct 16, 2026282+1
Oct 14, 20262810
Oct 13, 2026281+20
Oct 09, 20262610
Oct 08, 20262610
Oct 07, 20262610
Oct 06, 20262610
Oct 05, 20262610
Oct 02, 2026261No prior observation