Momentum investing is essentially the opposite of the tried-and-tested Wall Street adage -- "buy low and sell high." Investors following this investing style typically avoid betting on cheap stocks and waiting long for them to recover. They believe instead that one could make far more money in lesser time by "buying high and selling higher."Everyone likes betting on fast-moving trending stocks, but it isn't easy to determine the right entry point. These stocks often lose momentum when their future growth po ...