Wall Street shares closed mostly lower on Thursday session as investors remained cautious before a report released on Friday showing that payrolls in the country may have expanded last month. The Standard & Poor's 500 Index slipped 0.01% to 1,883.68, the Dow Jones industrial average fell 0.13% to 16,558.87 and the Nasdaq Composite Index gained 0.31% to 4,127.451.