Stocks opened lower, pushed down by a disappointing report about orders for long-term factory goods like computers or industrial machinery. But they turned upward by late morning, after reports that Federal Reserve Chairman Ben Bernanke thinks there's still space for the Fed to step in to help the economy.

For the Dow Jones industrial average, it was the only gain this week.

The Dow rose 100.51 points, or 0.8 percent, to 13,157.97.

The Standard & Poor's 500 rose 9.05 points, or 0.7 percent, to 1,411.13.

The Nasdaq composite index rose 16.39 points, or 0.5 percent, to 3,069.79.

For the week:

The Dow is down 86.88 points, or 0.7 percent.

The S&P 500 is down 7.03 points, or 0.5 percent.

The Nasdaq composite is down 6.80 points, or 0.2 percent.

For the year:

The Dow is up 940.41 points, or 7.7 percent.

The S&P 500 is up 153.53 points, or 12.2 percent.

The Nasdaq composite is up 464.64 points, or 17.8 percent.