Groupon Pins Turnaround on Billionaire Co-Founder Lefkofsky

Groupon Pins Turnaround on Billionaire Co-Founder Lefkofsky

Sally Ryan/The New York Times via Redux

Groupon’s shares rose as much as 19 percent in extended trading yesterday, following the announcement of Eric Lefkofsky as CEO together with the report of a 7.1 percent rise in second-quarter sales and a smaller-than-projected net loss.