BY THE NUMBERS

U.S. stock futures were steady as Wall Street comes off a tumultuous two days that has seen the Dow drop more than 800 points and the major averages slide to their lowest levels since late August. The S&P 500 is coming its first back-to-back drops of 1% or more this year, and the Dow, S&P and Nasdaq have all fallen this past week. The Dow is on track for its largest week of loss since the final week of May, and the S&P 500 could post its biggest weekly decline since the week ending Aug. 2. (CNBC)

On today's economic calendar, the Labor Department issues its weekly look at initial jobless claims at 8:30 a.m. ET. The Institute for Supply Management is out with its nonmanufacturing index, its measure of the U.S. services economy, at 10 a.m. ET. At the same time, the government is out with August factory orders, seen coming in unchanged after rising 1.4% in July. (CNBC)