Wall St ends near session highs

U.S. stocks closed near their best levels overnight on positive economic data which points to improving U.S. economy.

Dow Jones Industrial Average gained 111.90 points, or 0.77 per cent at 14,559.65.
S&P 500 added 12.08 points, or 0.78 per cent at 1,563.77, less than 2 points from 2007's closing high 
All key S&P sectors ended up, led by health care and energy shares.
Nasdaq gained 17.18 points, or 0.53 per cent at 3,252.48.