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Contract OI history

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Dec 18, 2026 EXPIRATION

ARIS $17.50 Put

ARIS261218P00017500

Latest saved OI431Oct 20, 2026
Last change+4vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ARIS $17.50 put open interest history 10 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 4312150 2026-10-02: 427 OI2026-10-05: 427 OI2026-10-06: 427 OI2026-10-07: 427 OI2026-10-08: 427 OI2026-10-09: 427 OI2026-10-13: 427 OI2026-10-14: 427 OI2026-10-16: 427 OI2026-10-20: 431 OI Oct 02, 2026Oct 20, 2026

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

ARIS contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing431+4
Oct 16, 20264270
Oct 14, 20264270
Oct 13, 20264270
Oct 09, 20264270
Oct 08, 20264270
Oct 07, 20264270
Oct 06, 20264270
Oct 05, 20264270
Oct 02, 2026427No prior observation