Wall Street is ticking higher as it heads toward its best week since March, despite a long list of worries hanging over it. The S&P 500 was 0.3% higher in early trading Friday and on pace for a 2.1% gain for the week. That would break a long, listless stretch where it failed to rise or fall by 1% for six straight weeks. The Dow was just barely higher while the Nasdaq composite was up 0.3%. Rising hopes that the U.S. government can avoid a disastrous default on its debt have been one of the main engines for the market this week.
