DoorDash is one of the leading food-delivery companies, and soon, Wall Street investors could be a part of its potential growth. Last week, the company confidentially filed with the SEC to go public. According to data tracked by Thinknum Alternative Data, DoorDash's app has gained more than 2 million new ratings in the Apple Store over the last six months — that's a 55% growth. Last year, private investors had given DoorDash a $12.7 billion valuation, but it's rumored that the company lost about $450 million in 2019 with no current profitability.