More articles on James Simons:
Simon's Doesn't Say: Meet The Man Whose 1990s Returns Are Better Than George Soros (Financial World 1996 PDF)
The Secret World of Jim Simons (Institutional Investor, Nov 2000)
Interview with James Simons: The billionaire hedge fund manager discusses the impact of mathematics on his former life in academia and his new one in finance. (Seed Magazine 2006)
Btw, Zero Hedge has interesting posts about RenTec, Renaissance.