Wall St ends up

U.S. stocks closed up overnight in another volatile session after Greek, French and German leaders renewed their pledges to aid Greece

The Dow Jones Industrial Average ended up 140.88 points, or 1.27 per cent at 11,246.73.

The S&P 500 gained 15.81 points, or 1.35 per cent at 1,188.68.

Nasdaq composite gained 40.40 points, or 1.60 per cent at 2,572.55. All 10 key S&P sectors gained, led by industrials and consumer discretionary.  

Gold closed down 0.13 per cent at USD1,824.40 an ounce, while crude oil settled 0.41 per cent higher at USD88.90 a barrel.