U.S. stocks closed sharply lower amid fresh worries of a Greek default, the surprise resignation of a European Central Bank executive-board member and concerns about President Barack Obama's jobs plan.
The Dow Jones Industrial Average tumbled 303.68 points, or 2.69%, to 10992.13, its fifth drop out of the last six sessions. All 30 Dow components closed in the red. The blue-chip Dow finished the holiday-shortened week down 2.2%, its sixth weekly decline out of the past seven. Markets were closed Monday in observance of Labor Day.