US stocks opened mostly lower on Friday, as investors digested the newly-released economic data.

Shortly after the opening bell, the Dow Jones Industrial Average was down 27.46 points, or 0.15 percent, to 17,693.04. The S&P 500 shed 2.07 points, or 0.10 percent, to 2,062.04. The Nasdaq Composite Index ticked up 0.48 points, or 0.01 percent, to 4,737.81.

The advance estimates of U.S. retail and food services sales for April were 453.4 billion U.S. dollars, seasonally adjusted, an increase of 1.3 percent from the previous month, and 3 percent above April 2015, according to the U.S. Commerce Department Friday.

The Producer Price Index for final demand rose 0.2 percent in April, seasonally adjusted, the U.S. Labor Department said Friday. Final demand declined 0.1 percent in March and 0.2 percent in February.

U.S. stocks closed mixed Thursday after choppy trading, as Wall Street digested soft economic reports.