Tempus AI's $1.5 billion all-stock acquisition of Personalis strengthens its position in precision oncology, adding Personalis' MRD platform, expanding its AI-driven diagnostics business and widening its opportunity in a market estimated at about $20 billion. The 6% drop on the news reflects dilution, timing ahead of earnings and near-term integration risk, a classic case of short-term dilution overshadowing long-term strategy. x.com x.com