Mirion Technologies is trading 4.37% down at $17.18; no company-specific announcement dated November 5 explaining the pre-market move was identified. - The prior session closed at $17.97, down 5.67%, according to the supplied price context. - Latest reported results, released October 27, showed Q3 revenue of $277.8 million and raised full-year revenue growth guidance to 24%–25%. Those earlier results do not establish a cause for this decline. - The investor-relations page lists the October 27 results as the latest news.