Trading in the U.S. index futures suggests that Wall Street stocks may open on a cautious note ahead of a session with limited domestic catalysts. Global cues are mostly weak, with Asian stocks closing mixed, while the European markets are also moving lower, as Greek fights hard to strike a deal with its international creditors. Most commodities are higher, although crude oil is trading lower. The dollar is having a mostly down session and bond yields are climbing. Against this backdrop, the domestic markets may mostly go about in a lackluster manner.