Living people 20th-century American businesspeople 21st-century American businesspeople 21st-century philanthropists American billionaires American chairpersons of corporations American chief executives of financial services companies American financial analysts American financial company founders American hedge fund managers American investors American management consultants Businesspeople from Greenwich, Connecticut Dartmouth College alumni Dartmouth College people Goldman Sachs people Harvard Business School alumni Jewish American philanthropists 21st-century American Jews Psi Upsilon