PIMCO CEO warns AI spending spree could end in a downturn

Emmanuel Roman says AI may need roughly $10 trillion in financing over five years, a sum that rivals the entire US bond market One of the world’s biggest bond investors just put a price tag on the AI boom. It is a large one. PIMCO chief executive Emmanuel Roman told a Hong Kong audience that artificial intelligence could need approximately $2 trillion a year in financing over the next five years. Add it up and you get around $10 trillion, with Roman warning that a pace like that may not hold. What Roman said in Hong Kong Roman spoke at the Global Financial Leaders’ Investment Summit in Hong Kong, around November 3, 2026. The event drew approximately 280 global financial executives. His core argument was about scale. AI is no longer just a software story. It is a capital story, built on data centers and semiconductor factories that need enormous amounts of money to build. Roman’s estimate of around $10 trillion over five years lands uncomfortably close to the size of the entire US bond market. That market is valued at approximately $12 trillion. Roman cautioned that the accelerating pace of spending could prove unsustainable. If it does, he suggested, the result could be a significa...