FAIRPORT, N.Y. , March 10, 2021 /PRNewswire/ -- Manning & Napier, Inc. (NYSE: MN), (" Manning & Napier " or "the Company") today reported preliminary assets under management ("AUM") as of February 28, 2021 of $20.3 billion , compared with $19.9 billion at January 31, 2021 and $20.1 billion at