His wealth and the source of it has been the subject of investigation by both Dow Jones Institutional News and The Wall Street Journal.
[2] The source of Mark Epstein's wealth has been described by both Dow Jones Institutional News and The Wall Street Journal (WSJ) as mysterious, after he refused to answer WSJ's journalists' questions about the source of his wealth.
[2][8] The newspaper noted his ownership of the $1m luxury yacht Izmo, and a 16-story condominium that he purchased from Les Wexner in the 1990s.
He donated his luxury yacht Izmo to the Marine Science and Nautical Training Academy in Charleston.
[2] He also served on the board of directors of the Humpty Dumpty Institute, an international charity that he loaned over $100,000 to in 2014.