Swartzman runs Peerage Realty Partners, which owns a network of brokerages in the luxury real estate space across North America. Its more than 4,700 U.S. agents do approximately $28 billion in annual sales, which makes Peerage the nation’s eighth largest brokerage firm. The firm has grown quickly through acquisitions of large brokerages, many of them affiliates of Sotheby’s International Realty. He joined Peerage in 2014 from MDC Partners where he oversaw 15 partner firms and real estate activity across the company’s entire network.