(New York, NY)  --  The Dow Jones Industrial Average closed above the 15-thousand mark for the first time.  Stocks were pushed higher by gains in the materials and energy sectors.  The Dow gained 87 points today to close at 15-056.  The S&P 500 hit a new all-time closing high of 16-26, a gain of eight points.  The Nasdaq gained four points to 33-97.