the portly, cigar-chomping, serial deal maker named Sandy Weill. Jamie’s family had become close to the Weills in the mid-1970s, after Sandy’s brokerage firm acquired Shearson Hammill, where Dimon’s father was a top broker. While at Tufts, Dimon had even written a paper on the Hayden Stone takeover of Shearson, which his mother showed to Weill, who was impressed with its analysis.