Wall Street shares inched higher on Thursday trading session with the benchmark index Nasdaq Composite increasing for the sixth successive day as investors weighed prospects of disappointing consumer spending data versus weather forecast. The S&P 500 Index gained 0.58% to 1,829.83, the Dow Jones industrial average added 0.40% to 16,027.59 and the Nasdaq surged 0.94% to 4,240.67.