Legendary Wall Street financier and mathematician Jim Simons passed away on Friday aged 86. Simons, one of the richest men in the world with a net worth exceeding $30 billion, revolutionized investing ...

Using advanced computers, he went from M.I.T. professor to multibillionaire. His Medallion fund had 66 percent average annual returns for decades. By Jonathan Kandell Jim Simons, the prizewinning ...