Forget the middle-aged belt-and braces stockbroker who ‘knows’ a good stock. Ignore the 5-star tech analysts who never saw a startup he didn’t like (with your money). Meet 25-year-old math PhD Sam Barnett, CEO of SBB Research – a quant hedge fund – who, instead of wild extrapolations and Keynesian hockey-sticks, trades the market by “using data to mine information before it is encoded into the markets.”