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 potential fails to justify their swelled-up valuation. In that phase, investors find themselves invested in shares that have limited to no upside or even a downside. So, betting on a stock just by looking at the traditional momentum parameters could be risky at times. It could be safer to invest in bargain stocks that have been witnessing price momentum recently. While the Zacks Momentum Style Score, which pays close attention to trends in a stock's ...