 In March 2014, Guggenheim Securities hired Eric Mandl as a Senior Managing Director focusing on Technology, Media and Telecom Investment Banking.In September 2014, Guggenheim hired former Chief Operating Officer of Barclays Global Corporate and Investment Banking Gerald A. Donini as a Senior Managing Director.In September 2015, Donini and Mark Van Lith were named as Co-Chief Executive Officers of Guggenheim Securities.