Review & Preview: Losing Momentum

Schadenfreude is a beast—and momentum investors are on the receiving end now. Momentum, the practice of buying the market’s best-performing stocks based on the premise they will stay the best performers, is a wonderful investing strategy when it’s working in your favor. The returns are fantastic—the Invesco S&P 500 Momentum exchange-traded fund has returned 42% a year for the past three years, more than double the SPDR S&P 500 ETF’s 20% annual return.