ManuWe Investment Thesis Castle Biosciences (NASDAQ:CSTL) is a fast-growing molecular diagnostics company that focuses on selling prognostic tests for dermatological (skin) cancer, esophageal cancer and mental health patients. Castle Biosciences has demonstrated consistently rapid revenue growth and is trading at a cheap based on a 2.1x EV/TTM GP. In Q2 2024, Castle Biosciences inflected into net income and operating profitability in Q2 2024, which should drive more institutional and retail interest and thu ...