#oncology diagnostics

Guardant Health: A Rerating Built on a Company in Transition

Guardant Health is a blood-based oncology diagnostics company whose economic center still sits in advanced-cancer therapy selection while its upside narrative has shifted toward Shield, a colorectal-cancer screening test that just won UnitedHealth coverage for 100 million lives. 2025 revenue reached 982 million USD, up 33% year on year, with non-GAAP gross margin improving from 62% to 66%, yet the company still posts negative owner earnings and trades near 17x forward EV/sales, above larger and cash-generative peer Natera. Rating Watch: an excellent liquid-biopsy franchise, but the stock already prices in broad Shield adoption and a faster profit path than has been proven, with the ideal buy zone at 68 to 74 dollars.