U.S. stocks climbed on Wednesday, led by tech shares, even as the results of the presidential contest so far failed to yield a clear winner. The Dow Jones Industrial Average jumped about 370 points, or 1.4%. The blue-chip benchmark surged more than 800 points at its session high. The S&P 500 rose 2.2%. The tech-heavy Nasdaq Composite popped 3.9% as investors crowded back into the trade that's been working for most of this tumultuous year.