降息预期和不确定性支撑，纽约金价5日回升

Group 1 - The most actively traded gold futures for December 2025 rose by $6.4 to close at $3435 per ounce, with an increase of 0.19% [1] - The rise in gold prices was supported by expectations of a Federal Reserve interest rate cut in September and market uncertainties, leading to increased buying interest [1] - The U.S. stock indices and the dollar index declined, further bolstering bullish sentiment for gold [1] Group 2 - The U.S. services sector index for July was reported at 50.1, below the market expectation of 51.5 but better than June's 50.8 [1] - President Trump indicated plans to announce new tariffs on semiconductors, chips, and pharmaceuticals, with potential increases in drug import tariffs up to 250% over the next year and a half [1] - The uncertainty surrounding Federal Reserve personnel appointments also supported the gold market [1] Group 3 - Silver futures for September delivery increased by $0.39, closing at $37.835 per ounce, with a rise of 1.04% [3] Group 4 - The World Gold Council reported that central banks purchased a net 22 tons of gold in June, marking a slight increase for the third consecutive month [2] - In the first half of 2025, global central bank net gold purchases totaled 123 tons, showing a slight decrease compared to the first half of 2024 [2]