- The S&P 500 increased slightly on Monday after falling as much as 1.5% in early morning trading. The decline in the index, which tracks the overall market, partly stemmed from a weakness in economic numbers as well as the impending threat of tariffs promised by President Donald Trump.
After notching its worst trading session of the year Friday, the S&P 500 fought back to remain flat after all major indexes fell Monday on weak economic data.
