Swartzman runs Peerage Realty Partners, which owns a network of brokerages in the luxury real estate space across North America, and, collectively, operates the U.S.’s eighth largest brokerage. The firm — which does approximately $23 billion in annual sales — has grown through acquisitions of large brokerages, many of them affiliates of Sotheby’s International Realty. Before joining Peerage in 2014, Swartzman oversaw 15 partner firms and real estate activity across MDC Partners’ entire network.