Encouraging signs from two of the most important zones of the world economy, the powerhouse of China and the debt-burdened countries of Europe, drove the Dow Jones industrial average up 181 points Thursday, its second-biggest gain this year.
The Dow Jones industrial average rose 181.19 points, or 1.4 percent, to 12,986.58.
The Standard & Poor's 500 index rose 18.86 points, 1.4 percent, to 1,387.57.
The Nasdaq composite index gained 39.09 points, 1.3 percent, to 3,055.55.
For the week:
The Dow is down 73.56 points, or 0.6 percent.
The S&P 500 is down 10.51 points, or 0.8 percent.
The Nasdaq is down 24.95 points, or 0.8 percent.
For the year:
The Dow is up 769.02 points, or 6.3 percent.
The S&P 500 is up 129.97 points, or 10.3 percent.
The Nasdaq is up 450.40 points, or 17.3 percent.