Markets Higher on Strong Earnings, Existing Homes Sales Rise

Markets are still riding high from positive results from Apple (AAPL) and other corporate earnings. The National Association of Realtors said existing home sales rose 2.4 percent in September. That's the strongest reading in a year. Texas Instruments (TXN) and Harley-Davidson (HOG) are higher after beating earnings expectations. Shares of Coca-Cola (KO) are falling sharply after sales fell in the quarter. McDonald's (MCD) shares are also trading lower on poor earnings. The world's largest restaurant chain said its third quarter profit fell 30 percent. Airline stocks are higher in Tuesday's session. American (AAL), United Continental (UAL) and Southwest (LUV) are all up more than 5 percent.