光模块CPO概念再度活跃，中际旭创大涨，云计算50ETF（516630）涨超2%

Group 1 - The three major indices opened mixed on July 31, with the Shanghai Composite Index down 0.3%, the Shenzhen Component Index up 0.05%, and the ChiNext Index up 0.65% [1] - CPO optical modules, ChatGPT, and liquid cooling servers led the market, with the Cloud Computing 50 ETF (516630) rising over 2% [1] - Nvidia's stock reached a new all-time high, with a market capitalization exceeding $4.37 trillion and a trading volume of $29.911 billion [1] Group 2 - Nvidia's recent stock surge is expected to benefit the domestic computing power industry chain due to overseas mapping logic [2] - The Cloud Computing 50 ETF (516630) tracks an index with a high AI computing power content, covering popular concepts such as optical modules, computing power leasing, data centers, AI servers, and liquid cooling [2] - The Cloud Computing 50 ETF (516630) has the lowest total fee rate for tracking this index [2]