Stock markets are experiencing a downturn as Wall Street braces for a significant round of earnings reports from major technology companies. The Dow Jones Index has dropped over 400 points, marking its worst performance in a month, with investors reacting to mixed earnings results and rising Treasury yields. Overall, the S&P 500 and Nasdaq have also recorded losses, pushing the markets into a rare three-day losing streak. Additionally, concerns over broader economic factors, including the upcoming labor report and election worries, continue to weigh heavy on market sentiment, as analysts predict volatility in the near term.