The coming return to Wall Street will be a second go-round for Krispy Kreme, which opened its first donut store in 1973 in North Carolina and went public in 2000 after becoming a nationwide food phenomenon. Life as a public company did not end sweetly: After a bankruptcy filing prefaced by a probe of its accounting practices and a drop in business at some of its franchises, Krispy Kreme was taken private in a $1.35 billion deal by JAB Holding, a German investment firm that also controls Panera Bread and Pret a Manger.