james joseph pallotta (born march 13, 1958) is an american billionaire businessman. in 2009, he founded raptor group, a private investment company. prior to forming raptor, pallotta was vice chairman at tudor investment corporation. he is co-owner and chairman of the italian football club a.s. roma; co-owner and executive board member of the national basketball association's boston celtics, and co-owner of esports franchise fnatic.