深夜 美股开盘巨震！

Core Viewpoint - Moody's downgrade of the U.S. government credit rating has triggered significant volatility in the U.S. financial markets, impacting stock indices and bond yields [1][2][4]. Group 1: Moody's Downgrade - Moody's downgraded the U.S. government's long-term issuer and unsecured debt rating from AAA to AA1, changing the outlook from negative to stable [2]. - The downgrade reflects a rising debt and interest payment ratio over the past decade, which has deteriorated the fiscal performance relative to other high-rated sovereign nations [2]. - Moody's noted that the stable outlook is based on the U.S.'s unique credit strengths, including economic scale, resilience, and the dollar's status as a global reserve currency [2]. Group 2: Market Reactions - Following the downgrade, U.S. stock indices experienced initial declines, with the Nasdaq and S&P 500 dropping over 1% at one point, while the Dow Jones fell over 0.7% before recovering slightly [1][4][5]. - U.S. Treasury yields rose, with the 10-year yield surpassing 4.5%, reflecting market reactions to the downgrade [1][4]. - The 30-year Treasury bond led the decline, with its yield exceeding 5%, causing the yield curve to steepen [4]. Group 3: Economic Perspectives - U.S. economic officials, including the National Economic Council Director, emphasized that the downgrade should not surprise the market and asserted that U.S. debt remains a safe investment [3]. - Federal Reserve officials indicated that they are focused on fulfilling their price and employment mandates, while also preparing to provide liquidity to the financial system [3]. - Some analysts view the downgrade as a potential buying opportunity for stocks, suggesting that the correlation between stock returns and bond yields may shift, making stocks more sensitive to interest rates [7].