恐慌指数VIX涨穿20关口，为6月份以来首次，日内涨幅超过22%。 标普500指数下跌超百点，跌幅扩大至1.64%。 ...

Group 1 - The Nasdaq index has seen a decline of 2%, indicating a significant drop in technology stocks [1] - The S&P 500 index has decreased by 1.57%, reflecting broader market weakness [1]

Core Viewpoint - The Nasdaq index opened lower and continued to decline, dropping over 2%, while the S&P 500 index fell by 1.5% and the Dow Jones index decreased by 1.3% [1] Market Performance - Nasdaq index experienced a decline of more than 2% [1] - S&P 500 index recorded a decrease of 1.5% [1] - Dow Jones index fell by 1.3% [1]

Core Points - The S&P 500 index opened lower by 52.11 points, a decline of 0.82%, settling at 6287.28 points [1] - The Dow Jones Industrial Average opened down by 349.21 points, a decrease of 0.79%, at 43781.77 points [1] - The Nasdaq Composite index opened lower by 291.81 points, a drop of 1.38%, reaching 20830.64 points [1]

Group 1 - The S&P 500 index futures fell by 1.2%, reaching an intraday low [1]

Group 1 - The core point of the news is that President Trump signed an executive order establishing tariffs ranging from 10% to 41% on multiple trade partners, which has influenced market sentiment and the dollar index [1] - The dollar index recorded its first monthly increase of the year, indicating a shift in market dynamics [1] Group 2 - The market is currently awaiting the July non-farm payroll report, which is expected to provide further insights into economic conditions [1] - Various trading instruments are showing mixed bullish and bearish sentiments, as indicated by the data from the "Gainscope Market Barometer" [1]

Core Points - The Dow Jones Industrial Average closed down 330.30 points, a decrease of 0.74%, ending at 44,130.98 points on July 31 [1] - The S&P 500 index closed down 23.51 points, a decrease of 0.37%, ending at 6,339.39 points on July 31 [1] - The Nasdaq Composite index closed down 7.23 points, a decrease of 0.03%, ending at 21,122.45 points on July 31 [1]

Group 1 - The three major US stock indices collectively declined, with the Dow Jones falling by 0.74%, the Nasdaq decreasing by 0.03%, and the S&P 500 dropping by 0.37% [1] - Meta experienced a significant increase, rising over 11%, while Microsoft saw an increase of nearly 4% [1]

Core Points - The S&P 500 index opened up by 64.12 points, representing a 1.01% increase, reaching 6427.02 points [1] - The Dow Jones Industrial Average opened up by 204.54 points, showing a 0.46% rise, reaching 44665.82 points [1] - The Nasdaq Composite index opened up by 327.81 points, indicating a 1.55% increase, reaching 21457.48 points [1]

纳斯达克综合指数7月31日（周四）开盘上涨247.40点，涨幅1.17%，报21377.07点； 标普500指数7月31日（周四）开盘上涨40.47点，涨幅0.64%，报6403.37点； 道琼斯指数7月31日（周四）开盘上涨62.18点，涨幅0.14%，报44523.46点。 ...