Wall Street opens 2017 with big gains as banks surge

Wall Street made big gains on Tuesday, its first day of trading in 2017, with all eyes on the Dow Jones Industrial Average as it zeroes in on the historic 20,000 mark. After coming within a hair's breadth of the milestone in December as part of a post-election rally, the Dow was trading just 0.46 percent shy of the psychological milestone. The Dow rose 13.4 percent in 2016 - its best performance in three years - registering strong gains in the past two months as investors bet that Presidential-e