U.S. stocks are mostly lower following disappointing economic news and U.S.-led airstrikes against Islamic State militants in Syria.

The Dow Jones industrial average fell 24 points, or 0.1 percent, to 17,147 as of noon Eastern time Tuesday.

The Standard & Poor's 500 fell a point, or 0.1 percent, to 1,992. The Nasdaq composite edged up three points, or 0.1 percent, to 4,531.

CarMax plunged 9 percent after reporting earnings that didn't meet analysts' expectations.

European markets fell after a closely watched gauge of business activity in the eurozone fell to a nine-month low in September. France's CAC 40 index dropped 1.9 percent and the FTSE 100 in Britain fell 1.4 percent.

Bond prices rose. The yield on the 10-year Treasury note fell to 2.55 percent.