US stocks edge lower at midday

NEW YORK – U.S. stocks are slipping in midday trading, extending a recent slump.

Airlines were among the biggest decliners Monday as investors worried that growing capacity could hurt their profits. American Airlines and United Continental each fell 5 percent.

Stocks have been falling over the last two weeks as traders try to anticipate when the Federal Reserve will begin raising interest rates from their historic lows.

The Dow Jones industrial average was down 51 points, or 0.3 percent, to 17,797 as of 11:45 a.m. Eastern time.

The Standard & Poor’s 500 index lost seven points, or 0.4 percent, to 2,085. The Nasdaq composite declined 29 points, or 0.6 percent, to 5,039.

European stocks were lower following several days of tense rhetoric between Greece and its creditors.