Fatburger restaurants to be renamed Skinnyburger Fatburger restaurant chain parent FAT Brands Inc. said Wednesday it is re-branding as Skinnyburger. FAT, which stands for Fresh, Authentic, Tasty, said it was changing its name because of "popular demand" for the top-pick menu item. The Skinnyburger is a low-carb, lean-beef burger made with two patties in lieu of buns. The stock, which was still inactive in premarket trade, has lost 24.4% over the past 12 months, while the SP 500 has gained 7.9%. Market Pulse Stories are Rapid-fire, short news bursts on stocks and markets as they move. Visit MarketWatch.com for more information on this news.