At Fairfield University, in Connecticut, where he studied finance, he shared his investment ideas by writing letters to his idol Martin Zweig, founder of Zweig Investors. Dimenna then worked for Zweig as an intern, and in 1984 the two started a hedge fund with $2.5 million. Dimenna is now managing director of the New York hedge fund Zweig-DiMenna Associates Inc.
Around 1998, Benzaquen, a partner at Gilder Gagnon Howe & Co., introduced the DiMennas to St. Luke's.
"It was the passion of the musicians, and they appeared to be having a great time," Dimenna said. "They were making eye contact and really having fun doing it, and that made a big impression."