NEW YORK—Wall Street ticked lower Tuesday ahead of two potentially market-shaking events later in the week.
The S&P 500 slipped 12.22, or 0.3 percent, to 4,387.55 to give back some of its rare August gain from a day before, which was powered by Big Tech stocks. The Dow Jones Industrial Average fell 174.86 points, or 0.5 percent, to 34,288.83, and the Nasdaq composite edged up by 8.28, or 0.1 percent, to 13,505.87.
