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Contract OI history

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Jan 21, 2028 EXPIRATION

ARDX $7.00 Put

ARDX280121P00007000

Latest saved OI511Oct 20, 2026
Last change+1vs previous saved observation
Saved market days6Oct 08, 2026 onwards
Daily open interest Hover a point for its date and OI
ARDX $7.00 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. 5112550 2026-10-08: 509 OI2026-10-09: 509 OI2026-10-13: 510 OI2026-10-14: 510 OI2026-10-16: 510 OI2026-10-20: 511 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, 2026Viewing511+1
Oct 16, 20265100
Oct 14, 20265100
Oct 13, 2026510+1
Oct 09, 20265090
Oct 08, 2026509No prior observation