美股存储概念狂飙，闪迪涨超27%，道指、标普创新高，白银开年以来上涨15%

Group 1 - The technology sector showed mixed results, with Amazon leading gains by over 3%, while Tesla experienced a significant drop of over 4% due to the announcement of a low-interest financing plan for Model 3/Y, interpreted as a price cut amid disappointing delivery data for 2025 [2] - The major U.S. stock indices closed higher, with both the Dow Jones and S&P 500 reaching all-time closing highs, driven by a surge in storage chip stocks [3] - Storage-related stocks saw substantial increases, with SanDisk soaring over 27% and achieving a new intraday high, while Micron Technology rose 10%, surpassing a market capitalization of $380 billion [5] Group 2 - The Nasdaq Golden Dragon China Index fell by 0.78%, with mixed performances among popular Chinese stocks; companies like Hesai Technology and Xiaoma Zhixing rose over 10%, while Alibaba dropped over 3% [8] - Gold and silver prices continued to rise, with spot gold surpassing $4,500 and spot silver increasing by 15% since the beginning of the year [9][10] - International oil prices weakened, with WTI crude oil dropping over 2% and ICE Brent crude oil declining nearly 2% [10]