Stocks edge lower in early trade; IBM weighs on Dow average

U.S. stocks drifted between small gains and losses in morning trading Tuesday as investors pored through some weak company earnings reports and the latest deal news. Health care stocks were among the biggest decliners. The market is coming off a three-day winning streak. KEEPING SCORE: The Dow Jones industrial average fell 10 points, or 0.1 percent, to 17,219 as of 11:14 a.m. Eastern time. The Standard & Poor's 500 index dipped one point, or 0.1 percent, to 2,031. The Nasdaq lost 20 points, or 0...