Stocks Down on War Fears

Stock prices retreated sharply last week due to fears of a prolonged war, and the ad sector was not unaffected, with valuations dipping slightly. Still, investors perceived no change in media spending due to the war, which kept prices from falling further, analysts said. Omnicom Group dodged a bullet when the release of its first financial report under new auditor KPMG showed no restatements, changes or accounting disagreements. On the big board, Omnicom shares dipped 3 percent to $55.51;