The profits of these two hedge funds are said to have accounted for more than half the money generated by the top 20 managers last year.
A behind-the-scenes look at hedge fund Renaissance Technologies, whose network of affiliated people has given $37 million this election cycle.
Deutsche Bank and Barclays on Tuesday locked horns with a U.S. Senate committee that has accused them of selling option products to hedge funds to help them avoid taxes.
A small but mysterious change at Renaissance Technologies.
Here's a note of 11 firms that have made their mark on the financial markets and were founded less than 30 years ago.
Here's a few links to some interesting Bloomberg, CNBC, Guardian, New York Post and New York Times stories that are currently doing the rounds.
James Harris 'Jim' Simons (born 1938) is an American hedge fund manager, mathematician, and philanthropist.
Leeds United youngster Nohan Kenneh has signed his first professional deal at Elland Road.
Tottenham Hotspur have been linked with Crystal Palace striker Christian Benteke.
Tottenham Hotspur face a difficult challenge to get a result against Liverpool tomorrow.
Leeds United are reportedly interested in Cameron Brannagan of Oxford United.
Leeds United are among the clubs reportedly interested in Dwight Gayle of Newcastle United.
Leeds United are said to be progressing with a deal for another Manchester City winger, Ian Poveda.
Tottenham Hotspur are set to be without star striker Harry Kane until April in what looks a huge blow.
Liverpool have sold Allan Rodrigues de Souza - despite impressing Jurgen Klopp in Anfield training, he was unable to make an appearance for the Reds.
Dwight Gayle could reportedly make a shock move from Newcastle United to Premier League relegation rivals Aston Villa.
Emre Mor could be heading to the Championship, with Slaven Bilic's West Bromwich Albion reportedly meeting the Celta Vigo flop's agent.