Activists Crowd Into Bank of New York Mellon Fight. Hedge Funds, Stocks and Bonds, Bank of New York Mellon Corporation, Marcato Capital Management LP, Pershing Square Capital Management, Third Point LLC, Trian Fund Management LP, Ackman, William A, Garden, Edward P, Hassell, Gerald, Loeb, Daniel S, Peltz, Nelson, McGuire, Richard Trainor III (Mick)