Dunkin’ Brands enjoys post-IPO jolt By: MarketWatch July 27, 2011 at 14:04 PM EDT Shares rise 50% as investors gobble up shares of doughnut and coffee chain even as big IPO week looks to be unraveling. Read More >> Related Stocks: Argent Mid Cap ETF Dunkin' Brands Group Macy's Senvest Capital Inc Starbucks Corp