In what could be a major blow to the domestic derivatives market, the Singapore Stock Exchange (SGX) will soon launch trading in Indian single-stock futures on its platform. The Singapore bourse currently offers trading in Nifty index contracts, which are very popular among overseas investors.The launch of single-stock futures could lead to further expansion of domestic financial markets, experts say.According to sources, the National Stock Exchange (NSE) has expressed its concerns over the move; but, SGX has decided to go ahead with its plan.