Joe Hendrickson Founded in 1963, Portillo's Inc. (NASDAQ:PTLO) operates restaurants that serve Chicago-style hot dogs, as well as grilled burgers, beef sandwiches, and other food items. The company has continued expanding its restaurant chain nationwide across the United States, showing constant good revenue growth. The company's post-IPO stock performance after the 2021 IPO has been poor, as the stock has lost over two thirds of the value from its initial trading. After the stock has had such a weak run am ...