欧美股市多数下跌，芯片股深夜爆发，中概股普跌，白银跳水

Group 1 - US stock indices collectively declined, with the Dow Jones down 0.29%, S&P 500 down 0.38%, and Nasdaq down 0.66% [1] - Major technology stocks mostly fell, with the US Tech Giants Index down 0.3%, Apple down over 1%, and Google down nearly 1% [2] - Chinese concept stocks saw a significant drop, with the Nasdaq China Golden Dragon Index down 1.15%, and several companies like Vipshop and Century Interconnect falling over 8% [2] Group 2 - Chip stocks surged, with Micron Technology rising 7.8% and surpassing a market cap of $400 billion, having increased over 27% year-to-date [2] - European stock indices closed lower, with the French CAC40 down 1.23% and the UK FTSE 100 up 1.09% [3] - Precious metals experienced sharp declines, with silver dropping 2.7% and briefly falling below $87 per ounce [3]