If you want to learn how to build enormous biceps, following the advice of Arnold Schwarzenegger makes a lot of sense. The same concept applies to stock market investing. If you want to build a stock portfolio that delivers enormous gains, studying the actions of the world's most successful investors is a great place to start.

Image source: Getty Images.

You can learn a lot from following billionaire investors. Unfortunately one of those lessons is that they don't always get it right. Let's take a closer look at the stocks billionaires can't seem to get enough of to see if they belong in your portfolio. 

Continue reading

Source Fool.com