What happened Shares of Zoom Video Communications (NASDAQ: ZM) rose today as investors began slowly coming back to technology stocks after a two-day sell-off. Zoom Video's stock jumped by as much as 7.7% in morning trading and was still up by 3.4% as of 11:17 a.m. EST. So what Zoom's stock took a hit on Monday and Tuesday as investors processed the news that Pfizer's coronavirus vaccine candidate is more than 90% effective and that the company could potentially have 1.3 billion doses available sometime next year. Image source: Getty Images. A vaccine that could help prevent the novel coronavirus is a good thing, of course, but some investors are concerned that it could curb a lot of the growth that Zoom and other technology stocks have experienced during the pandemic. As lockdowns and social distancing became the norm for many Americans, people flocked to Zoom's videoconferencing services, helping to drive the company's revenue up 355% in the most recent quarter. Zoom's share price bump today appears to come from some investors coming back to the stock after the recent sell-off. The gains from today add to an astounding year for Zoom's stock, with shares gaining 470% year to date. Now what Zoom's share price swings over the past few days show just how persuaded some investors can be by the daily news. Instead of watching the headlines so closely, Zoom investors would be better off digging into the company's quarterly financials, developing an investment thesis for the stock, and then sticking with their investment unless something fundamentally changes with Zoom's business. 10 stocks we like better than Zoom Video CommunicationsWhen 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 Zoom Video Communications 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 October 20, 2020 Chris Neiger has no position in any of the stocks mentioned. The Motley Fool owns shares of and recommends Zoom Video Communications. The Motley Fool has a disclosure policy.Source