U.S. borrowing costs jump past 5.1%

U.S. government borrowing costs for 10 years rose above 5.1% on Sept. 23, 2026, the WSJ reported, as investors sold government IOUs. Think of it as the interest rate on America's credit card — it pushes up mortgages and loans. That can mean pricier borrowing and tougher times for stocks. The pace of the jump is what worries me.