中概股多数下挫，贵金属全线大涨，比特币击穿8.7万美元

Market Overview - The US stock market opened higher but later erased gains, with the Dow Jones up 0.33%, S&P 500 up 0.48%, and Nasdaq up 0.58% before declining [1] - Major tech stocks showed mixed performance, with Tesla initially rising 4.7% and Nvidia up 1.5%, but both later lost their gains [1] - Chip stocks continued to decline, with Oracle and Broadcom down nearly 4%, and iRobot's stock plummeting 69% after announcing bankruptcy [1] Chinese Concept Stocks - Most Chinese concept stocks experienced significant declines, with the Nasdaq Golden Dragon China Index down nearly 1.7%, Baidu down over 4%, Alibaba down over 3%, and Li Auto down over 2% [1] - Several Chinese concept stocks accelerated their drop, with some falling over 10%, and Sihong International leading the decline with a drop of over 30% [2] Precious Metals and Commodities - There was a surge in safe-haven assets, pushing spot gold close to historical highs, with silver rising 3% to a peak of $63.96 per ounce [3] - Platinum and palladium also saw significant increases, with palladium soaring over 6% and platinum rising over 3%, reaching the highest level since September 2011 [3] - NYMEX platinum futures broke above $1800 per ounce, with a year-to-date increase of nearly 100%, significantly outpacing gold's 65% rise [3] Oil and Cryptocurrency - WTI crude oil and Brent crude oil prices fell, reported at $56.91 and $60.64 per barrel, respectively [4] - The cryptocurrency market faced a sharp decline, with Bitcoin dropping 2.61% below $87,000, and Ethereum falling below $3,000, alongside widespread losses in other cryptocurrencies [4] - Over the past 24 hours, the number of liquidations in the crypto market reached 140,000 [4]