The mind-boggling valuations of AI companies

Microsoft are building a data center in Wales. Microsoft are building a data center in Wales. Tue 4 Nov 2025 10.00 ESTLast modified on Tue 4 Nov 2025 10.01 EST If you like reading our newsletter, forward this email to five friends with a demand they sign up like itâ s a chain letter warning of bad luck for five years. In this weekâ s news, AI companies hit mind-boggling financial milestones such as a $5tn valuation, a $100bn quarter, and a string of deals worth nearly $600bn. Last week, the chipmaker Nvidia hit a valuation of $5tn.