澳大利亚S&P/ASX200指数7月29日（周三）收盘上涨91.50点，涨幅1.02%，报9039.30点。

China A-share STAR 50 Index fell more than 3% as Shengke Communication tumbled over 8%; China's CPU maker Haiguang, AMEC, Hua Hong Hongli and Shanghai Simgui each slid more than 5%.

A joint statement signed by 1,132 employees at frontier AI firms including OpenAI, Meta, Google and Anthropic warned automation of AI R&D may be near and, while timing is uncertain, a material risk exists that rapid capability breakthroughs could outpace human understanding and control. The signatories said industry, governments and society need time to address emerging risks, build safety guardrails and strengthen regulatory frameworks, but firms and countries face a competitive dilemma—no one is willing to slow alone. They urged the US government to build on existing monitoring of frontier model releases and push an international collaboration to develop the technical and governance tools needed to prudently guide automated AI R&D.