What happened Shares of used-car company Vroom (NASDAQ: VRM) were down 12.7% in November, according to data provided by S&P Global Market Intelligence. Investors didn't like the company's results for the third quarter of 2020 or its guidance for the fourth quarter. Oddly, positive news regarding a coronavirus vaccine also sent the stock down during November. So what Vroom stock took a step back after Pfizer and BioNTech announced promising coronavirus vaccine news. To be clear, Vroom isn't hurt by a vaccine. But consumers have increasingly tried used-car e-commerce in 2020 because of the pandemic. This was an existing trend, but physical-distancing considerations have accelerated the process. Perhaps with a vaccine, used-car e-commerce will slow the pace at which it takes market share from brick-and-mortar dealers. Image source: Getty Images. After the vaccine announcement, Vroom reported Q3 results. The company has three reportable segments and, taken as a whole, revenue was down 5% year over year. Furthermore, it reported a net loss of $37.9 million and even had negative earnings before interest, taxes, depreciation, and amortization (EBITDA) -- arguably the easiest number to show positive bottom-line results. For Q4, Vroom's management expects revenue of $372 million to $414 million and ongoing losses. Investors weren't happy with that. As a result, Vroom stock fell to its lowest point since its initial public offering (IPO). Now what With the coronavirus, you'd expect an e-commerce company like Vroom to be growing like crazy. But that's why it's important to remember this isn't a pure e-commerce company, at least not yet. About half of its revenue still comes from other sources. Specifically, sales at its physical used-car lot plummeted 64% in Q3, dragging down overall results. While overall results can't be disregarded, investors should constantly assess Vroom's growth engine: e-commerce. Over time, one would expect e-commerce sales to account for the majority of its overall revenue. In Q3, Vroom's e-commerce sales grew and gross profit per vehicle increased. That's a good sign for the financial viability of this business, though there's a lot more to consider before investing. 10 stocks we like better than Vroom, Inc.When investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the ten best stocks for investors to buy right now... and Vroom, Inc. wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of November 20, 2020 Jon Quast has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source