Here are some of the potential market catalysts due Wednesday for traders to consider: 8:15 a.m. Eastern. U.S. ADP employment for April. 8:30 a.m. Eastern. U.S. GDP for first quarter. 8:30 a.m. U.S.

Global markets were mixed and U.S. stock futures edge lower after gains on Wall Street on Tuesday that were fueled by optimism around trade deals, even as companies globally were yanking guidance due ...