 COLUMBUS, Ohio, July 28, 2021 PRNewswire -- Diamond Hill Investment Group, Inc. NASDAQ: DHIL today reported unaudited financial results for the second quarter of 2021. The following are selected highlights for the quarter ended June 30, 2021: Assets under management AUM were 32.4 billion compared to 30.6 billion as of March 31, 2021, and 20.6 billion as of June 30, 2020. 