What happened Shares of Fastly (NYSE: FSLY) fell Wednesday after an analyst at Citi initiated coverage of the cloud-computing company with a sell rating on the stock. The tech company's stock price fell by as much as 6.9% and was down 4.5% at the end of the trading day. So what Citi analyst Tyler Radke started coverage of Fastly's stock with a $49 price target and the aforementioned sell rating. Radke is concerned that Fastly may not be able to grow its customer net additions as fast as it has in the past. Image source: Getty Images. Fastly's business has benefited from the pandemic as people have been spending more time at home and increasing their consumption of online content. Fastly's edge computing cloud platform helps accelerate websites, online video, and apps. In light of that, the analyst also suggested that the next 12 months could be difficult for Fastly, as the widespread distribution of COVID-19 vaccines should allow people to largely return to their pre-pandemic normal behaviors. Now what Some investors are becoming concerned that in the coming years, technology companies won't grow as quickly as they did during the pandemic. Fastly stock is still up 229% from where it was 12 months ago, but investors have pushed the share price down 26% over the past six months. Long-term investors should remember to focus on the company's underlying business rather than trading stocks based on the day's news or analysts' notes. 10 stocks we like better than FastlyWhen 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 Fastly 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 February 24, 2021 Chris Neiger has no position in any of the stocks mentioned. The Motley Fool owns shares of and recommends Fastly. The Motley Fool has a disclosure policy.Source