|May 21, 2018||121.50||121.56||118.09||119.37||1,200,499|
Year End Stock Prices
The historical stock information provided is for informational purposes only and is not intended for trading purposes. The historical stock information is provided by Mergent, a third party service, and Alexion Pharmaceuticals, Inc. does not maintain or provide information directly to this service. Prices display split-adjusted cost basis per share on that date.