 Fat Brands Inc. stock soared 128 in Thursday trading after the company announced it was acquiring the Johnny Rockets chain restaurants from private-equity firm Sun Capital Partners Inc. for 25 million. The purchase, funded through cash on hand and proceeds from the companys securitization facility, is expected to be completed next month. Johnny Rockets is a 50s-style burger-and-shake chain with 325 locations around the world, including nine that are company-owned. The acquisition will bring Fat Brands total number of owned and franchised locations to more than 700 with annual sales that exceed 700 million. Fat Brands stock has rallied 77 for the year to date while the SP 500 index is up 4.8 for the period. 