U.S. stocks on Tuesday faltered after a positive open, as Wall Street's inexorable bull run continues to lose a little bit of steam this month. The benchmark S&P 500 (SP500) is attempting to snap a three-day losing streak,

Wall Street lost ground on Tuesday as investors closed the book on a remarkable year for equities, during which the stock market was powered to record highs by the twin engines of the artificial-intelligence boom and the Federal Reserve’s first interest rate cuts in three-and-a-half years.