Market Snapshot: S&P 500 closes at record high as investors assess strong earnings, tax battle in Congress

The S&P 500 notched its first record close on Thursday in seven weeks, but the Dow ended lower, as investors parsed an onslaught of quarterly earnings and weighted discord in Congress over a new tax plan.

The S&P 500 notched its first record close on Thursday in seven weeks, but the Dow ended lower, as investors parsed an onslaught of quarterly earnings and weighted discord in Congress over a new tax plan.