Shares of tech companies, including the so-called FAANG stocks – Facebook, Apple, Amazon, Netflix and Google-parent Alphabet – have been market darlings for years. So when a sell-off gains steam, the stocks with the biggest gains are among the ones that investors sell first to lock in profits. Tech stocks have also been caught in the trade fight with China, as Trump's tough stance on Beijing is causing disruptions in their supply chain. Technology companies such as Facebook, Twitter and Alphabet are also facing intense regulatory scrutiny from the U.S. government.