Impossible to know as an outsider, but it's interesting to me that Simons tried pretty hard to isolate Renaissance from Wall Street & other hedge funds. He hir

Impossible to know as an outsider, but it's interesting to me that Simons tried pretty hard to isolate Renaissance from Wall Street & other hedge funds. He hired people out of academia, saddled them with an extremely onerous non-compete agreement, and was leery of Wall St. traders because he figured if they left their current fund, they'd leave him, too, once they learned the secret sauce. And he put the headquarters in Long Island, away from the loci of Greenwich and Wall St.