U.S. Mortgage Rates Rise Amid Inflation and Treasury Volatility

U.S. mortgage rates have trended upward throughout 2026, despite the Federal Reserve System holding the federal funds target at 3.75% for 231 consecutive days. The 30-year fixed mortgage rate rose from 5.98% in late February to a peak of 6.67% by mid-August, before slightly declining to 6.65% by August 20. This increase is driven by rising 10-year Treasury yields, which climbed to 4.71% from 3.97% following the start of a conflict with Iran in February that spiked crude oil prices and inflation expectations.

The rate environment has created divergent outcomes for the financial sector. Homebuilder D.R. Horton reported a 12% drop in Q3 FY2026 net income and a 20% cancellation rate. Mortgage originator loanDepot saw its stock price fall over 58% year-to-date, leading the company to pivot its strategy toward home equity. In contrast, Annaly Capital Management and PNC Financial Services experienced gains as mortgage-backed security yields rose faster than funding costs.

To stabilize the market and combat rising yields fueled by inflation and heavy government debt, the U.S. Treasury Department announced it will at least double its planned buyback of government bonds over the coming months.