Notwithstanding the lackluster showing in recent sessions, Wall Street still sports a nervous look on Wednesday ahead of a key U.S. private payrolls report. Global cues are mostly positive, with most Asian stocks ending higher, although the volatile Chinese market saw a sharp move to the downside. Meanwhile, buoyed by positive domestic earnings and fairly positive eurozone service sector data, the European markets are rallying strongly. Earlier in the global trading day, a private survey showed that the Chinese service sector expanded at a faster rate. The domestic markets may now turn their focus on the U.S. service sector activity data and ADP’s private payrolls data. Disney’s revenue miss could weigh down on the Dow.