美股指盘中转跌，标普势将终结七连涨，甲骨文砸盘，比特币白银齐跌，黄金继续新高

Group 1 - Oracle faces financial pressure due to reliance on Nvidia chips, contributing to market downturn [1] - Major US stock indices, including the S&P 500 and Nasdaq, are experiencing declines after previously reaching record highs [1] - Semiconductor stocks are under significant pressure, with notable declines in companies such as Seagate Technology, MKS Instruments, and Micron Technology [1] Group 2 - Bitcoin experiences a sharp decline, dropping over $5,000 from its recent peak, reflecting a broader downturn in the cryptocurrency market [2]