U.S. markets are down after hitting 13,000 yesterday. Dell shares are hit after an earnings miss. Hewlett-Packard earnings come later today.

European markets closed lower on weaker-than-expected economic data. Unresolved issues related to Greek bailout weighed on sentiment.

U.S. stock futures pointed to a mixed opening for Wall Street on Wednesday, ahead of an announcement by the U.S. Treasury Department on corporate tax cuts.