BY THE NUMBERS

U.S. stock futures are poised to erase Tuesday's losses despite concerns about the China-based virus that has resulted in nine deaths, as well as Boeing's announcement about further delays in the return of the 737 Max jet. Boeing's losses accounted for about half the Dow's Wednesday drop, which ended a five-day win streak. The Nasdaq did set an intraday record high Tuesday, and the S&P 500 was a fraction of a point away from doing the same before the day's gains were erased. (CNBC)

On today's economic calendar, the National Association of Realtors releases December existing home sales at 10 a.m. ET. The Mortgage Bankers Association will release its weekly look at mortgage applications at 7 a.m. ET. The usual Wednesday release by the Energy Department on oil and gasoline inventories will be delayed until Thursday due to the Martin Luther King Jr. holiday on Monday. (CNBC)