Every portfolio could use a couple of evergreen stocks -- you know, the stocks issued by companies that can keep growing for years and years without making major changes to their business models or products. Commonly enough, evergreens have staying power because they're getting a steady boost from ultra long-term trends in the population or the economy, and that's part of the secret sauce that can make them killer investments. 

With that in mind, let's analyze a pair of evergreen growth stocks that have already made quite a few investors richer by smashing the market's returns over the last 10 years. If you're willing to buy and hold either for the next few decades or longer, there's a very good chance that you'll be the proud owner of a lot more money than you invest in them today.

Medical device company DexCom's (NASDAQ: DXCM) makes wearable continuous glucose monitors (CGMs) that help people with diabetes get minute-by-minute data about their blood glucose levels, thereby giving them better control of their symptoms.

Continue reading

Source Fool.com