Groupon Plunges to Record as Coupon Demand Fades: Chicago Mover

Groupon Plunges to Record as Coupon Demand Fades: Chicago Mover

Tim Boyle/Bloomberg

Groupon Inc.'s company headquarters in Chicago, Groupon, which before today had lost 80 percent of its value since the IPO, has struggled to grow abroad, where it makes nearly half its revenue.