The US stock market recently experienced significant selling pressure, with the Dow Jones Industrial Average index declining by more than 1.6%, and the S&P 500 index falling over 2%. The Nasdaq Composite Index fell by more than 3%. These movements reflect the market's pessimistic sentiment towards the economic outlook, particularly as concerns about a potential recession intensify. The latest US employment data and manufacturing activity indicators are not encouraging, with a notable increase in unemployment claims. The ISM Manufacturing Index recorded 46.8%, well below the expected value, indicating that economic activity is contracting. In light of these negative signals, economist Chris Rupkey noted that the current economic data clearly shows a downward trend, with even slight signs of recession already evident. Amidst turbulent market sentiment, some companies that may be heavily impacted by an economic downturn, such as JPMorgan and Boeing, have seen their shares fall by nearly 3% and over 7% respectively. Additionally, large tech stocks like NVIDIA saw their shares drop by 8%, reflecting the market's concern about potential greater market volatility during the upcoming November US presidential election.