美股低开，科技股普跌！黄金一度突破3230美元，美国“财政悬崖”迫近

Core Viewpoint - The article discusses the recent downgrade of the U.S. sovereign credit rating by major credit rating agencies, highlighting the implications of rising fiscal deficits and the potential for a "fiscal cliff" scenario in the U.S. economy [7][17][22]. Market Reaction - On May 19, U.S. stock indices opened lower, with the Nasdaq dropping over 1.2%, the S&P 500 down nearly 1%, and the Dow Jones falling over 0.5% [1][3]. - Major tech stocks experienced declines, with Tesla down over 4% and Nvidia and TSMC down approximately 2% [3][4]. U.S. Treasury Yield Trends - Following the downgrade, U.S. Treasury yields rose significantly, with the 10-year yield surpassing 4.5% and the 30-year yield exceeding 5% [11][12]. - The increase in yields is attributed to concerns over inflation and fiscal sustainability, with the long-end yields driven by fiscal factors post-downgrade [12][18]. Fiscal Deficit Concerns - The U.S. budget deficit has consistently exceeded 6% of GDP over the past two years, with projections for FY2024 at 6.4% and FY2023 at 6.2% [15]. - The U.S. Treasury reported a deficit of over $1.3 trillion in the first half of FY2025, marking the second-highest historical figure for that period [15]. Credit Rating Downgrade Implications - The downgrade from AAA to AA1 by Moody's reflects structural issues related to long-term fiscal pressures, with all three major credit agencies having downgraded the U.S. rating [7][9][17]. - The downgrade is expected to increase borrowing costs for the U.S. government, impacting overall interest rate structures and potentially leading to higher rates for corporate and personal loans [21]. Future Outlook - Analysts warn of rising supply pressures in U.S. debt issuance, with net issuance expected to increase in FY2025 due to ongoing fiscal deficits [18]. - The potential for a "fiscal cliff" looms as negotiations over the debt ceiling and tax reforms continue, with significant uncertainty surrounding the outcomes [19][22].