U.S. stocks opened slightly lower on Friday but the main indexes were on track to finish the week marginally higher. Investors turned cautious as concerns over Greece's debt-default drama lingered. The S&P 500 opened 7 points, or 0.3%, lower at 2,101. The Dow Jones Industrial Average dropped 54 points, or 0.3%, to 17,985. The Nasdaq Composite began the day lower, shedding 15 points, or 0.3% to 5,067.
Copyright © 2015 MarketWatch, Inc.
Continue Reading Below