Danny's Coffee Shops became Denny's Coffee Shops in 1959 to avoid confusion with another California chain, Coffee Dan's. The business renamed itself again in 1961 as Denny's. Today, the Spartanburg, South Carolina-headquartered Denny's has 1,640 franchised, licensed, and company restaurants across the U.S. (including Puerto Rico and Guam) and is in 11 countries. It has been publicly traded since November 1989. Among its recent corporate developments, Denny's announced a partnership with REEF, an operator of North American virtual restaurants, logistics and proximity hubs.