Trading in the U.S. index futures suggests that Wall Street stocks may open higher on Wednesday, as the dollar has lost some ground and yet commodities are firmer. Global cues are mixed, with Asian stocks closing mixed, while the European markets are also trading on mixed note. The U.K. market is up solidly on M&A news, while the German market is reacting to disappointing factory orders data. In another major deal news, U.K.’s Shell has made a cash and stock offer for BG Group.