3 Under-the-Radar Stocks That Could Double Your Money -- and Sooner Than You Might Think

Multi-baggers, or stocks that go up multiple times their original value, are something of a holy grail for investors. That said, these elusive winners aren't always easy to find -- unless, of course, you know where to look.

There are a number of measures investors can employ to gauge the possibility that a stock can double or more from its current value: A company feeding the emerging app economy, one riding the tailwinds of digital advertising, or one that's tapping several megatrends to dominate its corner of the world.

Another telltale sign is a stock that has already doubled investors' money and shows no signs of slowing. Here are three stocks that meet one of the aforementioned criteria, while also having doubled -- or more -- over the past several months.

Source Fool.com