美联储释放“鸽派”信号，美股美债迎来强劲反弹

Group 1 - Federal Reserve Chairman Jerome Powell's speech at the Jackson Hole conference conveyed a more dovish stance, signaling potential easing of monetary policy, which led to a significant market rally [1] - The immediate market reaction included a decline in two-year Treasury yields by 10 basis points to 3.69%, and the implied probability of a rate cut in September rose from 70% to 80% [1] - Major stock indices saw substantial gains, with the S&P 500 rising by 1.5%, the Nasdaq by 1.88%, and the Dow Jones reaching a record closing high, while small-cap stocks surged by 3.8% [1] Group 2 - Some Wall Street strategists view Powell's remarks as a reassurance to the market, but caution that the market may be overreacting [1] - Concerns about the Federal Reserve's independence have resurfaced, particularly due to President Trump's public pressure on Powell to cut rates and his comments regarding Fed Governor Cook [1] - The market's enthusiastic response reflects a conflicting sentiment among investors, who are hopeful for liquidity easing but worried about the economic fundamentals supporting long-term stock market growth [1]