U.S. stock indexes closed mostly lower as airlines, cruise companies and travel booking sites fell following the attacks in Belgium.

Royal Caribbean dropped 3 percent today and Priceline declined 2 percent.

Energy and materials companies also moved lower. Health care and technology stocks gained ground.

The Dow Jones industrial average gave up 41 points, or 0.2 percent, to 17,582.

The Standard & Poor’s 500 index edged down a point to 2,049. The Nasdaq composite edged up 12 points, or 0.3 percent, to 4,821.

Bond prices fell. The yield on the 10-year Treasury note rose to 1.94 percent.