美股三大指数集体高开，纳指涨0.46%，甲骨文涨超32%

Group 1 - The U.S. stock market opened higher with the S&P 500 index rising by 0.58%, the Nasdaq by 0.46%, and the Dow Jones by 0.04% [1] - Oracle's stock surged over 32% as the company projected a 77% increase in cloud infrastructure revenue to $18 billion for the fiscal year 2026 [1] - GameStop's shares increased by over 6% following better-than-expected hardware sales in the second quarter [1] Group 2 - NIO's stock fell by over 8% after the company announced plans to issue 181.8 million Class A ordinary shares, including American Depositary Shares [1] - Synopsys experienced a significant drop of over 29% after reporting quarterly results that fell short of expectations [1]