Dow Jones Industrial Index inched down 0.29% to end Wednesday's session at 12,971.06. Investors were disappointed by the Fed decision not to embark on additional easing measures. Adding pressure on the US blue chips, ISM manufacturing PMI rose much less than expected in July. However, positive non-farm employment data restricted the downswing. Only three sectors from nine included in the index posted mild gains. Oil and gas sector was the top-performer, climbing 0.5%. Exxon Mobile and Chevron rose 0.84% and 0.07%. Meanwhile, industrials and consumer services dragged Dow Jones Industrial Average lower. 3M, Boeing and General Electric tumbled 0.03%, 1.54% and 0.1%, respectively. Technology shares also followed bearish trend, with International Business Machines and Microsoft dropping 0.41% and 0.2%.