S&P 500 ekes out gain while banks drag on Dow

The Nasdaq gained moderately to close at a record high for a second straight day, lifted by big tech names such as Facebook and Apple . Gilead Sciences shares tumbled 8.6 percent and were the biggest drag on the benchmark S&P after the biotech company's weak forecast for its hepatitis C medicines. Major U.S. stock indexes are hovering around record highs after a rally following the Nov. 8 election of President Donald Trump amid expectations he will usher in fiscal stimulus and lower regulati