For now, "exhausted" investor sentiment is in a "'wait and see' mood ... ahead of the U.S. employm ent data on Friday. Today's ADP is the pre-cursor to that," wrote Societe Generale analyst Kit Juckes in a market note.
Payroll processor ADP will release its monthly figures on private-sector employment at 8:15 a.m. ET. That report is often considered a barometer of what to expect from the government's key monthly jobs report, due out early Friday.
U.S. markets finished higher Tuesday, regaining lost ground after Monday's steep sell-off.
European markets were mostly higher in morning trading following the release of positive economic data. Eurozone activity increased in January for the seventh consecutive month, according to Markit's purchasing managers' index, although the final reading was slightly weaker than the initial flash estimate.