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Contract OI history

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Apr 16, 2027 EXPIRATION

ARDX $4.00 Call

ARDX270416C00004000

Latest saved OI658Oct 20, 2026
Last change+18vs 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. 6583290 2026-10-08: 630 OI2026-10-09: 630 OI2026-10-13: 655 OI2026-10-14: 640 OI2026-10-16: 640 OI2026-10-20: 658 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, 2026Viewing658+18
Oct 16, 20266400
Oct 14, 2026640-15
Oct 13, 2026655+25
Oct 09, 20266300
Oct 08, 2026630No prior observation