Fidelity’s Timmer Says AI Bubble Risk Is Not Stock Valuations, but Debt

Fidelity's Jurrien Timmer argues that the risk of an AI bubble lies in debt markets rather than equity valuations, pointing to CoreWeave bond yields above 15% while stock valuations have fallen. The comment is an analyst opinion rather than a market event, but it flags stress in AI-linked credit that could spill into broader risk appetite. Traders watching AI-adjacent equities and crypto risk assets may treat rising AI debt yields as a warning signal.