About a quarter of endowment management firms in the U.S. working for Georgetown University are majority owned by people from a minority group and/or women, according to a report released Friday. Georgetown, which maintains a $1.66 billion endowment, is the second U.S.-based institution to release an endowment manager diversity report and the first to do so voluntarily, according to the Diverse Asset Managers Initiative. The University of California system published a similar report in July in compliance with California law.