NEW YORK (AP) — Wall Street drifted to a mixed closed ahead of a couple potentially market-shaking events later in the week.

The S&P 500 fell 0.3% Tuesday, coming off a rare August gain that was powered by Big Tech. The Dow lost 174 points, and the Nasdaq composite eked out a tiny gain.

Stocks have struggled this month as yields shot upward in the bond market.

The yield on the 10-year Treasury ticked lower a day after reaching its highest level since 2007.

Later this week, Nvidia will offer a profit report and the Federal Reserve's chair will give a highly anticipated speech.