Paul Hawtin created the first "Twitter hedge fund," which used social media metrics to guide its investments -- and it beat the market. Now, he's turned his "sentiment analysis" machine into a trading platform ordinary investors can use.
Do you know the right way to pick winning stocks? Nikhil Hutheesing heads to New York's Union Square to speak with holiday shoppers about how they shop for stocks. Then fund manager James Altucher gives his professional advice.