US treasury yields have jumped and US futures have fallen after the second reading of US GDP growth for Q3 saw a large upward revision.
Tech giant Apple has bought social media analytics firm Topsy Labs, according to reports.
US futures firm MF Global Holding has been ordered to pay $1.2bn (£740m) in restitution to its customers over its collapse.
Janet Yellen has defended the Federal Reserve's quantitative easing programme in her first appearance before Congress.
The top ten US CEOs have earned over $100m each for the first time, with two CEOs earning more than $1bn over the course of 2012, according to a survey by GMI Ratings.
Jupiter has hired Robert Siddles from F&C to run US small cap portfolios at the group, with the manager bringing across his £150m US Small Cap trust.
The board of the £150m F&C US Smaller Companies trust has said it will serve notice on F&C after manager Robert Siddles quit the group.