The Dow Jones Industrial Average closed down 2.3%, or 0.8%, at 20,957.09, as investors continued to look to lower interest rates to boost the U.S. economy.
The S&P 500 index of the biggest U.K. shares dropped 1.7% to 1,929.94.
The Nasdaq composite index of 500 stocks dropped 1%.
The Dow and S&P 500 were among the most volatile sectors in the S&p 500.
The index has been in free fall since February when it dropped nearly 9% from a peak.
The S&ps Dow Jones Indices and S/P 500 fell in each of the past two weeks.
The Dow fell 12.7%, and the S/Ps declined 6.3%.
The Dow has fallen 6.5% in the past year.
The Dow has been the worst performer of the Dow since January, when the index fell by more than 7% in just a matter of weeks.
But that drop is nothing compared to the Dow’s slide since the end of March, when it fell by 12.2%.
It is difficult to say how much the Dow and the Nasdaq will fall next week, but there are signs that the stock markets are beginning to reverse their slide.
Last week, the Dow posted its worst-ever monthly loss, but the Dow closed down 3.2% in one of the most important months of the year for the S & P 500.
The Nasdaq fell 6.7%.