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Just announced that Merck will buy Prometheus Biosciences for $10.8 billion. He's been keen on Prometheus ever since they announced phase-2 results of their main drug drug, which treats inflammatory bowel disease. Merck is eager to diversify away from their anti-cancer drug. PB has almost no revenues, but he feels this will be one of the greatest buys in pharma history.
It demonstrates amazing execution. One of its therapies continues to be dominant with 400 studies on the go. Not too expensive.