 In September 2019, Donini was named to the additional role of Chief Operating Officer of Guggenheim Partners and Andrew Rosenfield, a managing partner, was appointed president.Also in September 2019, Guggenheim hired former Deputy United States Attorney and Director of the Division of Enforcement of the Securities and Exchange Commission Robert S. Khuzami as a Managing Partner and Chief Legal Officer.In the private sector Khuzami was a partner at Kirkland & Ellis LLP and worked at Deutsche Bank AG, including as General Counsel for the Americas.