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Nov 20, 2026 EXPIRATION

ATI $145.00 Put

ATI261120P00145000

Latest saved OI412Oct 23, 2026
Last change+1vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ATI $145.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 4122060 2026-10-02: 398 OI2026-10-05: 410 OI2026-10-06: 410 OI2026-10-07: 410 OI2026-10-08: 411 OI2026-10-09: 411 OI2026-10-13: 411 OI2026-10-14: 411 OI2026-10-15: 411 OI2026-10-16: 411 OI2026-10-21: 411 OI2026-10-23: 412 OI Oct 02, 2026Oct 23, 2026

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

ATI contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing412+1
Oct 21, 20264110
Oct 16, 20264110
Oct 15, 20264110
Oct 14, 20264110
Oct 13, 20264110
Oct 09, 20264110
Oct 08, 2026411+1
Oct 07, 20264100
Oct 06, 20264100
Oct 05, 2026410+12
Oct 02, 2026398No prior observation