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Contract OI history

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Mar 19, 2027 EXPIRATION

ARIS $17.50 Call

ARIS270319C00017500

Latest saved OI266Oct 20, 2026
Last change+3vs previous saved observation
Saved market days10Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
ARIS $17.50 call open interest history 10 saved observations from 2026-10-02 to 2026-10-20. Exact values and changes are listed in the table below. 2661330 2026-10-02: 261 OI2026-10-05: 261 OI2026-10-06: 261 OI2026-10-07: 261 OI2026-10-08: 261 OI2026-10-09: 255 OI2026-10-13: 258 OI2026-10-14: 258 OI2026-10-16: 263 OI2026-10-20: 266 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, 2026Viewing266+3
Oct 16, 2026263+5
Oct 14, 20262580
Oct 13, 2026258+3
Oct 09, 2026255-6
Oct 08, 20262610
Oct 07, 20262610
Oct 06, 20262610
Oct 05, 20262610
Oct 02, 2026261No prior observation