美股周一强势反弹，三大指数创5月来最大单日涨幅

Market Performance - On August 4, US stock markets opened high and continued to rise, with all three major indices recovering most of the losses from the previous Friday. The Dow Jones increased by 1.34% to close at 44,173.64 points, the Nasdaq Composite rose by 1.95% to 21,053.58 points, and the S&P 500 gained 1.47% to reach 6,329.94 points, marking the largest single-day gain since May [1] - Among the components of the Dow, 28 out of 30 stocks rose, with only Amazon and Chevron declining. The S&P 500 saw a ratio of over six gainers for every one loser [1] Economic Insights - CFRA Research's Chief Investment Strategist, Sam Stovall, described the day as a rebound day, noting that stock market declines are often followed by rebounds, but investors should be cautious about taking profits [1] - Historical data indicates that August is typically a weak month for US stocks, with the Dow having the worst average performance since 1988, while the S&P and Nasdaq are the second worst [1] - Morgan Stanley E*Trade's trading chief, Chris Larkin, mentioned that this week’s economic data is calm, and traders may look for clues from corporate earnings and trade tariff developments, while also monitoring signs of economic weakness and its potential impact on the market [1] Company Performance - Nvidia shares rose by 3.62% to $180, setting a new closing record since the previous Wednesday. Other major tech stocks also saw gains, with Microsoft up 2.2%, Apple up 0.48%, Google C up 3.05%, and Meta up 3.51%. However, Amazon fell by 1.44% [2] - Berkshire Hathaway's Class B shares dropped by 2.9%, reaching the lowest level since January, following a report that showed cash reserves of $344.09 billion, a 1% decrease from the previous quarter, marking the first decline in three years [2]