美联储公布利率决议，现货黄金短线微涨后回落、波动不大；美国10年期国债收益率日内涨幅超4个基点，短线波动大约2个基点；标普500涨幅略微扩大至超过0.2%，此后涨幅收窄；比特币微涨后，日内跌幅小幅扩大

Core Insights - The Federal Reserve announced its interest rate decision, leading to a slight increase in spot gold prices followed by a retreat, indicating minimal volatility in the market [1] - The yield on the 10-year U.S. Treasury bond rose by over 4 basis points during the day, with short-term fluctuations around 2 basis points [1] - The S&P 500 index saw its gains slightly expand to over 0.2%, but later the increase narrowed [1] - Bitcoin experienced a minor increase before its daily decline slightly widened [1]