A tray of cupcakes is pictured at a Crumbs Bake Shop, which specializes in over 50 varieties of cupcakes, in Hollywood, California June 29. Shares in Crumbs debuted at $13.10 on the Nasdaq on June 30, 2011, giving the biggest U.S. cupcake chain a market value of $58.9 million. They rose to $13.30 in midday trading.The gourmet cupcake pioneer, which got its start in 2003 on Manhattan's Upper West Side, now sells 1.5 million cupcakes a month through 35 stores located on both U.S. Coasts. Co-founder Jason Bauer wants to open 200 stores by 2014.