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Contract OI history

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Nov 20, 2026 EXPIRATION

ARDX $4.00 Call

ARDX261120C00004000

Latest saved OI191Oct 20, 2026
Last change-11vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ARDX $4.00 call open interest history 6 saved observations from 2026-10-08 to 2026-10-20. Exact values and changes are listed in the table below. 2021010 2026-10-08: 162 OI2026-10-09: 162 OI2026-10-13: 162 OI2026-10-14: 168 OI2026-10-16: 202 OI2026-10-20: 191 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, 2026Viewing191-11
Oct 16, 2026202+34
Oct 14, 2026168+6
Oct 13, 20261620
Oct 09, 20261620
Oct 08, 2026162No prior observation