Dow holds above 20,000; Qualcomm weighs on S&P, Nasdaq

Qualcomm fell 5.4 percent to $53.82 after the chipmaker reported a lower-than-expected rise in quarterly revenue. The post-election rally roared back to life this week following solid earnings and optimism over U.S. President Donald Trump's pro-growth initiatives, catapulting the Dow above the historic mark. Investors have also cheered largely positive fourth-quarter earnings, which are expected to show growth of 7 percent, their biggest increase in two years.