Nvidia shares fell about 2.5% on Monday after the Financial Times reported the company was working with some of Wall Street’s largest financial firms on a $500 billion AI infrastructure funding package. The report sparked concern about concentration risk, a term investors use for heavy exposure to a small number of companies or projects. The stock decline, combined with a positive trading day for Oracle, shifted the billionaire rankings: Larry Ellison’s estimated net worth rose to $192 billion in the afternoon, while Jensen Huang’s slipped to $188.6 billion, putting Ellison ahead as the world’s seventh-wealthiest person. Investors are now focused on Nvidia’s Aug. 26 second-quarter earnings, which may show whether demand for AI chips is strong enough to support the rapid buildout of AI infrastructure by companies including Nvidia, Intel and CoreWeave. Nvidia has been one of the market’s standout AI infrastructure stocks, reporting $81.6 billion in revenue, up about 85% year over year, and $58.3 billion in net income in its first quarter. Its shares are still up 17% since the start of the year as appetite for AI-related assets remains strong. The Financial Times also said Nvidia’s success has enabled it to support clients’ debt raises to speed up chip purchases, with Apollo and Blackstone helping finance infrastructure spending by companies such as Anthropic.