Golden and Wong oversee At World, a holding company that owns the brokerage they began in 2000 and the Christie’s International Real Estate franchise. Along with its core Chicagoland-based @properties, At World owns Georgia-based Ansley Real Estate and California-based Sereno among other large US brokerages. With over 5,300 U.S. agents who do over $29 billion in annual sales, At World ranks as the nation’s 14th largest real estate enterprise.