MYGN −42.9%. Neogen +98.0%, Lantheus Holdings +86.7%, Celldex Therapeutics +15.8%, Idexx Laboratories −16.3%. Weekly closes, Oct 10, 2025 = 100, log scale.

End-of-day closes (Databento EOD), the last close of each week. The four peers are the largest US-listed companies by market value in MYGN’s SEC industry (In Vitro & In Vivo Diagnostic Substances) with a year of closes. It shows what the closes did; a move here is not a cause, a forecast or a call.