Nvidia's risk is rising as it shifts from selling AI chips to financing the customers who buy them. The cost of insuring Nvidia against default had its biggest one-day move in a long time on talks to backstop more than $750 billion of AI infrastructure, including up to $250 billion of guarantees for OpenAI, which then spends the money on Nvidia chips. Equity markets still price Nvidia as the shovel seller; credit markets have started pricing it as the lender to the miners. x.comÂ