4DMedical is trading 5.3% higher at A$4.00, with no clear catalyst identified. - Available reporting says it fell 6.86% on October 14, without identifying a company-specific catalyst for that session. - Search results found no clear announcement explaining the October 15 rise. The move may be a rebound, but that explanation is unconfirmed; U.S. inflation was associated with market pressure on October 14, not cited as a reason for the gain.