A stock market boom in artificial intelligence companies has added more than half a trillion dollars to the wealth of America’s tech barons in the past year, data shows. He could become the world’s first trillionaire if he hits targets set by Tesla, the electric car company he runs. Its relatively advanced computer chips are a critical component in building the more powerful processing capability required by AI. It became the world’s first $5tn company in October, larger than the economic output of some of the world’s biggest economies, such as Japan or India. This means that stock markets are “particularly exposed should expectations around the impact of AI become less optimistic”, they said.

Source: The Guardian December 27, 2025 05:09 UTC