Tempus AI Scoops Up Personalis For $1.5 Billion; But Shares Dive
Licensing
11:30 AM ET 07/20/2026
Tempus AI (TEM) pledged to buy cancer diagnostics outfit Personalis (PSNL) for $1.5 billion on Monday. But shares of both medtech companies skidded. The deal follows a rumor last week that Merck (MRK) and others, including potentially Tempus AI, had expressed interest in buying Personalis. Personalis makes a blood test that screens for circulating tumor DNA, a marker that a…






