Market Close: Stocks Lower, 30-Year Yield at 19-Year High, Mortgage Rates Up • 8/18/26

Summary

CNBC's market close update covers Tuesday's stock declines, rising long-dated Treasury yields, higher mortgage rates, weak housing starts, Meta's youth-data lawsuit, and upcoming retailer earnings. The 30-year Treasury yield hit a 19-year high, and commentators see pressure but not catastrophe. Mortgage rates near 7% are weighing on housing, while Meta faces major legal-regulatory risk.

• Major averages fell for a third straight day: Dow -116, S&P 500 -53, Nasdaq -355.
• 30-year Treasury yield hit 5.32%, a 19-year high, and long-dated yields rose globally.
• Rick Santelli called the yield move significant but not catastrophic.
• Mike Santoli said global capital demand is keeping benchmark borrowing costs elevated.
• 30-year fixed mortgage rates near 6.73% helped drive weak July housing starts, with single-family down 16% year-over-year.
• Diana Olick noted only custom high-end builders are seeing green shoots, not big production builders.
• Meta is facing a big tobacco moment lawsuit with about $200B in damages sought.
• Wednesday earnings watch includes Target, TJX Companies, and Estee Lauder.