AI bubble fears: Anthropic junk rating risk deepens tech selloff

US technology stocks fell as worries about artificial intelligence spending grew. A report that AI company Anthropic could receive a junk credit rating after its initial public offering (IPO) added to concerns that Big Tech is borrowing heavily to fund AI. A junk rating means a bond is considered high-risk for investors. The report intensified questions about how AI companies will repay the money they are raising. The selloff hit major tech shares and added pressure on a sector that has driven US stock market gains. Investors are watching whether AI spending will produce enough profit to justify the debt.