The stock market took a licking Wednesday as investors pulled in their horns over worries about the global economy and uncertainties about when the Federal Reserve would raise interest rates. The major indexes closed at their lows for the day. The Nasdaq slumped 2.8%, while the S&P 500 and the Dow Jones industrial average lost 2.1% in the stock market today. The S&P 500 fell underwater for the year. It’s now down 1.1% year to date.