 FAIRPORT, N.Y., Sept. 13, 2021 PRNewswire -- Manning Napier, Inc. NYSE: MN, Manning Napier or the Company today reported preliminary assets under management AUM as of August 31, 2021 of 22.7 billion, compared with 22.5 billion at July 31, 2021, and 22.3 billion at June 30, 2021. 