$1 trillion worth of U.S. tech giants evaporate The U.S. stock market faced a massive sell-off on Friday, with reports suggesting a possible drop of more than $1 trillion in the market value of Nasdaq 100 companies during trading. According to the published data, Amazon shares fell by 5.51%, Nvidia by 2.95%, Tesla by 2.92%, Microsoft by 1.40%, Alphabet by 1.60% and down by 1.22%. Among the technology companies, Intel experienced the largest reported decline with a 26.88% decline. Dell stock fell by 10.75%, AMD by 9.97%, Micron by 5.59% and Oracle by 4.73%. The S&P 500 also retreated from a range of 7720 points to around 7622 points on the published chart. Also, according to the report, the Nasdaq was down 2.2% and the S&P 500 was down 1.2%. The fear of the heavy costs of artificial intelligence development and the uncertainty in the investment return of the technology giants were mentioned as the main causes of the sales pressure. Amazon's financial report and warnings about Intel's liquidity situation also added to investor concerns. According to a report attributed to Reuters, the decline in the value of Nasdaq 100 companies in October approached the $2 trillion mark; a matter that indicates the growing concern of investors about the valuation of technology companies. The trillion dollar figure is an estimate of the decline in the value of the Nasdaq 100 companies during trading and should not be considered a final loss of the entire American stock market.