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Contract OI history

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Dec 18, 2026 EXPIRATION

ARIS $20.00 Put

ARIS261218P00020000

Latest saved OI538Oct 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 $20.00 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. 5412700 2026-10-02: 536 OI2026-10-05: 537 OI2026-10-06: 541 OI2026-10-07: 541 OI2026-10-08: 541 OI2026-10-09: 541 OI2026-10-13: 535 OI2026-10-14: 535 OI2026-10-16: 535 OI2026-10-20: 538 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, 2026Viewing538+3
Oct 16, 20265350
Oct 14, 20265350
Oct 13, 2026535-6
Oct 09, 20265410
Oct 08, 20265410
Oct 07, 20265410
Oct 06, 2026541+4
Oct 05, 2026537+1
Oct 02, 2026536No prior observation