Nasdaq 100 Movers: MELI, ALXN
March 15, 2018 at 10:33 AM EDT
In early trading on Thursday, shares of Alexion Pharmaceuticals (ALXN) topped the list of the day's best performing components of the Nasdaq 100 index, trading up 7.1%. Year to date, Alexion Pharmaceuticals registers a 9.9% gain.