Nvidia's growing web of AI investments sparks bubble debate

Nvidia's $3 billion investment in Meta's share sale is the latest in a portfolio of stakes, loans and guarantees that some analysts say makes it the central bank of the AI boom. It has backed OpenAI, Anthropic, xAI, CoreWeave, Nebius, Mistral and Wayve. The deals keep demand for its chips high, but some Wall Street sceptics worry it is inflating an AI bubble.