U.S. stocks coasted to the finish of their latest winning month. The S&P 500 rose 0.4% Tuesday to close out its fifth straight winning month after setting a record last week. The Dow Jones Industrial Average gained 0.2% and set its own all-time high. The Nasdaq composite added 0.3%. The quiet trading came as a potential shutdown of the U.S. government loomed. Past shutdowns have had limited impact on the economy and stock market, and many investors expect something similar this time around. Treasury yields wavered but ultimately held relatively steady following mixed reports on the U.S. economy.