[U.S. Stock Market Opens, Nasdaq Up 0.51%] BlockBeats reports that on December 19, the U.S. stock market opened with the Dow Jones Industrial Average up 0.19%, the S&P 500 Index up 0.28%, and the Nasdaq up 0.51%. Oracle (ORCL.N) surged 5.3% at the open, while NVIDIA (NVDA.O) rose 1.5%. (Jin10)