In Friday morning trading, the Dow Jones industrial average closed up 168 points, or 1 percent, to 15,762.
The Nasdaq rose 62 points, or 1 percent, to 3,919.
The S&P 500 rose 23 points, or 1 percent, to 1,771.
The LABJ Stock Index rose 2 points, or 1 percent, to 174.
