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Contract OI history

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Apr 16, 2027 EXPIRATION

ARDX $4.00 Put

ARDX270416P00004000

Latest saved OI707Oct 20, 2026
Last change0vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ARDX $4.00 put open interest history 6 saved observations from 2026-10-08 to 2026-10-20. Exact values and changes are listed in the table below. 7073530 2026-10-08: 577 OI2026-10-09: 577 OI2026-10-13: 672 OI2026-10-14: 707 OI2026-10-16: 707 OI2026-10-20: 707 OI Oct 08, 2026Oct 20, 2026

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

ARDX contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 20, 2026Viewing7070
Oct 16, 20267070
Oct 14, 2026707+35
Oct 13, 2026672+95
Oct 09, 20265770
Oct 08, 2026577No prior observation