Emerging markets led a worldwide equity rally yesterday as investors welcomed the US Federal Reserve's surprise decision to keep its vast stimulus policy unchanged. Stock markets across the globe jumped following the Fed's announcement that it would hold off tapering its 85-billion US Dollars-a-month bond-buying scheme. In Asia, Mumbai jumped 3.43 percent, Jakarta 4.65 percent, Bangkok 3.47 percent and Manila 2.81 percent, following Wall Street higher after the Fed announcement spurred the Dow Jones Industrial Average and the S&P 500 toclose at record highs. Equities in Asia's economic powerhouses saw smaller gains. In Tokyo, the Nikkei rose 1.80 percent. Hong Kong added 1.67 percent and Sydney rallied 1.10 percent to finish at a five-year high