Stocks finished trading on Friday — the second session of the so-called "Santa Claus rally" — down just slightly on the day after a run of five straight positive sessions, with the S&P 500 (^GSPC) and Dow Jones Industrial Average (^DJI) hovering right near record levels set on Christmas Eve. For the holiday-shortened week, the benchmark S&P 500 gained roughly 2.3%, while the blue-chip Dow and tech-heavy Nasdaq Composite (^IXIC) picked up about 1.6% and 2.5%, respectively. Wall Street enters another rela ...