Learn how the simple formula for ROI can help you identify winning investments and make smarter investment decisions.

Founded in 1993, The Motley Fool is a financial services company dedicated to making the world smarter, happier, and richer.

The S&P 500 Index's (SPX) 20-day historical volatility (HV) has fallen below 6% for the first time in over a year ...

With this simple investment strategy, young adults with median earnings can build a sizable portfolio that pays a hefty ...