Scan the QR code with wechat < / P > < p > and share it with friends and circles of friends < / P > < p > on Thursday, us time, the main stock indexes of US stocks closed down, and the Nasdaq composite index fell more than 500 points. Investors' optimism about large technology companies had been restored by a series of strong financial reports, but this changed after meta, Facebook's parent company, announced disappointing quarterly results < p > the Dow Jones index closed at 35111.16, down 518.17 points, or 1.45%; The standard & Poor's 500 index closed at 4477.44, down 2.44%, the worst day in nearly a year, with technology stocks the biggest drag; The NASDAQ index closed at 13878.82, down 3.74%, the worst day since September 2020 < p > large technology stocks generally fell sharply, and the share price of meta, the parent company of Facebook, fell sharply by 26.4%, the largest decline in the company's history; The market value evaporated by more than $237 billion, the largest one-day market value decline in the history of US stocks. In addition, Amazon fell more than 7%, Netflix fell more than 5%, Google and Microsoft fell more than 3%, and Apple also fell nearly 2% < p > leading chip stocks generally fell, with Texas Instruments down more than 6% and NVIDIA down more than 5% < p > electric vehicle stocks generally fell, Tesla fell 1.60%, rivian fell 6.16% and Faraday fell 2.84% in the future; Weilai fell 2.65%, Xiaopeng fell 3.58% and ideal fell 2.44% < p > most e-commerce stocks fell, with Alibaba rising 0.48%, jd.com falling 1.86% and pinduoduo falling 4.60% < p > zhonggai online education stocks were mixed, with New Oriental rising 1.45%, Netease Youdao rising 0.29%, tal falling 4.39% and gaotu falling 1.64% < p > other popular Chinese stocks generally fell, including Zhihu fell 5.74%, manbang fell 5.33%, douyu fell 4.57%, bilibilibili fell 3.24%, Didi fell 2.73%, baidu fell 2.50% and boss direct employment fell 1.89% < p > specifically, The performance of major technology stocks in US stocks is as follows: < / P > < p > the performance of major chip stocks in US stocks is as follows: < / P > < p > the performance of major Chinese stocks listed in the US is as follows: < / P > < p > JJ kinahan, chief market strategist of TD ameritrader, an American securities firm, said: "Facebook used to be the builder of market confidence. This is a widely held stock and the core part of many portfolios, so when it faces such difficulties, it will only shake the overall confidence. The question now is, is this meta's problem or will it become an overall problem?" < p > previously, the strong financial reports released by Microsoft, apple and alphabet prompted investors to return to the technology sector, reminding them that the fundamentals of technology enterprises are still strong, but meta's weak performance outlook has led some investors to reverse their investment direction "The problem we're currently facing in terms of profitability is that it's not enough to make good profits. You have to make a very good plan and move forward with optimism." kinahan said. "Just good is not enough" is really the theme of this earnings season so far. " < p > he added that the rising threshold was partly due to the upcoming interest rate hike by the Federal Reserve. He said that this week, the performance of technology companies distracted investors from the upcoming measures of the Federal Reserve, but the prospect of policy tightening is still driving the market < p > on Thursday us time, US oil prices exceeded US $90 per barrel for the first time since 2014, exacerbating concerns about inflation < p > in terms of economic data, the U.S. Department of labor announced on Thursday that as of the week of January 29, the number of people applying for unemployment benefits in the United States was 238000, slightly lower than expected < p > as the market expected to release data on Friday, the yield of 10-year US Treasury bonds rose, making it worse for technology stocks. (Liu Chun)