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Contract OI history

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Nov 20, 2026 EXPIRATION

ATI $155.00 Put

ATI261120P00155000

Latest saved OI2,773Oct 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 $155.00 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. 2,7731,3860 2026-10-02: 10 OI2026-10-05: 10 OI2026-10-06: 10 OI2026-10-07: 10 OI2026-10-08: 2,739 OI2026-10-09: 2,739 OI2026-10-13: 2,744 OI2026-10-14: 2,744 OI2026-10-15: 2,743 OI2026-10-16: 2,743 OI2026-10-21: 2,772 OI2026-10-23: 2,773 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, 2026Viewing2,773+1
Oct 21, 20262,772+29
Oct 16, 20262,7430
Oct 15, 20262,743-1
Oct 14, 20262,7440
Oct 13, 20262,744+5
Oct 09, 20262,7390
Oct 08, 20262,739+2,729
Oct 07, 2026100
Oct 06, 2026100
Oct 05, 2026100
Oct 02, 202610No prior observation