Meta shares experienced a sharp decline on Thursday, impacting US tech stocks as fears over AI spending increased. Despite this setback, Meta reported a strong $64 billion in Q3 revenue and announced a stock split. Meanwhile, the US government is funding a speculative nuclear fusion project with investors linked to former President Donald Trump. The European space sector is also facing challenges due to the Starlink saga. The Financial Regulatory Authority cleared model short-selling contracts, and Blackstone is testing $10 billion to review banks' AI risks. Axel Springer's co-owner is looking into acquiring TikTok's European division.