Wall Street's main indexes opened higher on Friday after a softer-than-expected jobs report increased prospects for an unchanged U.S. interest rate this month. The report prompted a larger decline in Treasury yields, while lower oil prices also supported investor sentiment. At 09:30 a.m. ET, the Dow Jones Industrial Average rose 340.08 points, or 0.67%, to 51,266.64; the S&P 500 gained 68.27 points, or 0.89%, to 7,734.72; and the Nasdaq Composite gained 341.47 points, or 1.27%, to 27,216.91.