美股市场速览：市场持续上涨，结构或现隐忧

Market Performance - The S&P 500 increased by 1.7% this week, while the Nasdaq rose by 1.6%[3] - Small-cap value stocks (Russell 2000 Value) outperformed with a gain of 4.6%, compared to small-cap growth (Russell 2000 Growth) at 2.6%[3] Sector Performance - The technology hardware and equipment sector led with a 5.4% increase, followed by banks at 4.2% and durable goods and apparel at 3.9%[3] - Four sectors experienced declines, with the automotive and components sector down by 1.4%[3] Fund Flows - Estimated fund inflow for S&P 500 components was $2.34 billion this week, a significant decrease from $18.17 billion the previous week[4] - The technology hardware and equipment sector saw the highest inflow at $1.4 billion, while healthcare equipment and services experienced an outflow of $2.62 billion[4] Earnings Forecast - The dynamic F12M EPS forecast for S&P 500 components was adjusted upward by 0.2% this week, following a 0.3% increase last week[5] - The semiconductor products and equipment sector had the largest upward revision at 0.5%, while the automotive sector was revised down by 2.1%[5] Economic Risks - Key risks include uncertainties in economic fundamentals, international political situations, U.S. fiscal policy, and Federal Reserve monetary policy[5]