三大指数携手跳水，贵金属、芯片相关陷入调整

Market Overview - The U.S. stock market experienced a decline, with the Shanghai Composite Index down by 0.38%, while the Shenzhen Component and ChiNext Index fell by 1.37% and 2.61% respectively [1][3]. Semiconductor Sector - The semiconductor sector was a major contributor to the market decline, with an overall drop of 3.76%. Notable stocks such as Dongxin Technology, Yandong Micro, and Baiwei Storage hit the daily limit down, while companies like Jinghe Integrated and Huahong Semiconductor saw declines exceeding 9% [3]. Precious Metals - Precious metals, which had shown strength previously, are now undergoing a correction, with an average decline of 2.76%. Key stocks such as Xiaocheng Technology, Western Gold, and Chifeng Gold experienced significant drops of 6.7%, 5.84%, and 4.89% respectively, with over 10 stocks declining by more than 2% [3]. Gas Sector - The gas sector showed resilience, rising by 2.71% due to positive news. Stocks like Dazhong Public Utilities and Hongtong Gas reached the daily limit up, while others such as Shouhua Co., Zhongtai Co., and Xinjiang Torch saw increases exceeding 6% [3]. Commodity Prices - The LME copper futures reached a peak of $11,000 per ton, with Citigroup raising its 0-3 month copper price target from $10,500 to $11,000 per ton [3]. Regulatory Changes - The Ministry of Commerce and the General Administration of Customs announced export controls on lithium batteries and artificial graphite anode materials, which may impact related industries [3].