Moderna's stock price has nearly doubled in the past 12 months

Shares in Moderna surged in February when news of its vaccine candidate emerged. They shot up again – by more than 24%, to $26.49 – on March 16, the day NIH announced the clinical trial of Moderna’s vaccine. The stock price jumped again on April 17 -- with news of the federal government’s nearly half-a-billion-dollar grant -- to beyond $45. Moderna shares closed at $46.37 on April 29.