Miller Industries (MLR) Source: Roman Zaiets/ShutterStock.com Miller Industries (NYSE:MLR) is a company that makes tow trucks and towing equipment at a factory in Chattanooga, Tennessee. Regardless, MLR stock has been quietly killing it this year. In the current inflationary environment, with interest rates elevated, banks, credit card companies, and other lenders are relying on FICO scores more than ever before, driving business at Fair Isaac through the roof.