The Dow opened lower on Monday, hurt by a tumble in Boeing shares following the grounding of some its jets, while megacap stocks lifted the S&P 500 and the Nasdaq.
The Dow Jones Industrial Average fell 138.74 points, or 0.37 percent, at the open to 37,327.37. The S&P 500 opened higher by 6.46 points, or 0.14 percent, at 4,703.70, while the Nasdaq Composite gained 40.39 points, or 0.28 percent, to 14,564.47 at the opening bell.