By close Friday, the Dow Jones industrial average gained 228.87 points to 12,849.36, up 1.81 percent. The Standard & Poor's 500 index gained 24.77 to 1,390.33, up 1.81 percent. The Nasdaq composite index gained 61.14 to 2,402.97, up 2.61 percent.

On the New York Stock Exchange 2,433 stock advanced and 693 declined on a volume of 1.476 shares traded.

The 10-year treasury note fell 2/32 to yield 3.731 percent.

The dollar gained. The euro traded at $1.5809 Friday, compared with $1.5882 Thursday, while the dollar traded at 103.71 yen from 103.52 yen Thursday.

In Tokyo, the Nikkei index gained 78.15 points to 13,476.45, up 0.58 percent.

In London, the FTSE 100 index gained 69.60 to 6050.00, up 1.16 percent.