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Contract OI history

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Jan 21, 2028 EXPIRATION

ARDX $5.00 Put

ARDX280121P00005000

Latest saved OI264Oct 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 $5.00 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. 2641320 2026-10-08: 264 OI2026-10-09: 264 OI2026-10-13: 264 OI2026-10-14: 264 OI2026-10-16: 264 OI2026-10-20: 264 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, 2026Viewing2640
Oct 16, 20262640
Oct 14, 20262640
Oct 13, 20262640
Oct 09, 20262640
Oct 08, 2026264No prior observation