Firm expands investment leadership, boosts information exchange across investment platform with focus on idea generation DALLAS, April 30, 2019-- Highland Capital Management, L.P. announced today that it has named Joe Sowin co-chief investment officer (CIO). In the role, Sowin will oversee investment activities for the firm's multibillion-dollar alternative investment platform with a focus on driving information flow across investment teams and with the firm's counterparties. Sowin previously served as head of global equity trading. He will continue to manage the firm's trading operations as co-CIO.