Major indexes were little changed in early trading Tuesday, though several stocks were moving on corporate news.
DuPont surged 10 percent after announcing that its embattled CEO Ella Kullman would leave.
PepsiCo rose 1 percent after the company announced reported profits that easily beat analysts' forecasts.
The Dow Jones industrial average edged up 10 points, less than 0.1 percent, to 16,786. It jumped 304 points the day before.