美国或介入以伊冲突，美股期货下跌，黄金收涨，原油盘中涨超3%

Market Overview - Global market risk aversion has increased due to concerns over potential direct U.S. military intervention in the Iran conflict, leading to declines in U.S. stock futures and European indices [1][2] - U.S. stock indices futures fell, with Nasdaq 100 futures dropping over 1% [2] - European blue-chip stocks fell by more than 1.3%, with notable declines in payment company Adyen and luxury brand Kering, both down over 3% [2][3] Commodity Performance - Gold prices fluctuated, initially dropping below $3,350 before recovering to close higher at $3,370.90 per ounce [3] - Brent crude oil prices rose by 2.8%, reaching a closing high not seen since mid-July of the previous year, while WTI crude oil futures increased by 2.65% [3] - Silver prices fell, with spot silver down 0.96% to $36.3820 per ounce [3] Bond Market - The yield on the UK two-year bond rose by 2.1 basis points to 3.909%, showing a W-shaped reversal throughout the day [3] - German 10-year bond yields increased by 2.4 basis points, trading within a range of 2.502% to 2.540% [3] Currency Movements - The U.S. dollar index experienced a slight decline of over 0.1%, while the Canadian dollar's decline narrowed after the announcement of potential tariffs on U.S. steel and aluminum products [3] - The euro appreciated by 0.12% against the U.S. dollar, while the British pound rose by 0.26% [3]