One simple reason why BioNTech stock is a raging buy on today's crash

BioNTech (NASDAQ: BNTX) swung to a Q4 loss and guided for “lower-than-expected” full-year revenue on Tuesday. But the stock crashed more than 20%, mostly because its cofounders, Ugur Sahin (CEO) and Ozlem Tureci (CMO), said they would depart to set up a new biotech firm at the end of 2026.