These relatively small companies have excellent growth prospects.Wall Street doesn't always get it right. Companies with excellent growth prospects can be significantly undervalued, leading to stellar returns for patient investors. What follows are two stocks that could double your money in just a few years.1. Opendoor TechnologiesOpendoor Technologies (OPEN 4.00%) is disrupting the homebuying process. Its digital platform removes the friction and hassle of buying a home, and while it has experienced growth ...