Who doesn't love a good worst-to-first story, the underdog that got it together and came out a winner? It's natural to feel that way as an investor, too -- but when you see a stock that's been beaten down, it's important to find out why, and whether that company has what it takes to be a winner for your portfolio.
Here are three examples of companies with large upside and potentially brighter days ahead:
Revolve Group (NYSE: RVLV) is a next-generation fashion retailer. Unlike brick-and-mortar clothing companies with bulky fixed costs and bloated inventories, Revolve's operations are efficient. With no permanent physical store footprint, the online retailer leans on the quickly growing e-commerce space for growth.