Wall Street opened nearly flat on Friday, with investors waiting for the release of February existing home sales. In corporate news, Amgen fell 4.2% after the company halted a trail of colon cancer drug Vectibix. ImClone Systems, which makes Erbitux, a competitor drug to Vectibix, jumped 15%. DaimlerChrysler rose 4.1% amid reports the automaker would sell its Chrysler unit. |