UNITED STATES - OCTOBER 02: James Simons, Renaissance Technologies Corp's chairman and president, poses during a reception at the American Museum of Natural History in New York, U.S., on Saturday, Sept. 29, 2007. Simons's $18 billion Renaissance Institutional Equities Fund declined 12 percent since its value peaked last May, investors with direct knowledge of situation said. Mandel's Lone Cedar Fund dropped about 10.6 percent from its high in December, according to people familiar with the fund. (Photo by Jin Lee/Bloomberg via Getty Images)
