Wall Street collapses and stock markets record the biggest declines since March | Economy

The Dow Jones lost 2.24% to 24,388 points, the S & P 500 lost 2.33% to 2,633 points and the Nasdaq lost 3.05% to 6,969 points.

The S & P 500 has virtually wiped out all of its gains since last week, when it posted the highest weekly gain of the past seven years.

After a week-long truce between Washington and Beijing, stock market trading experienced strong volatility throughout the week, as investors sought signs of dissipating clouds of trade tensions.

• But fears of trade tensions between the United States and China came back after Peter Navarro, the White House's economic advisor, said US authorities would raise tariffs if countries could not close their doors. an agreement during the 90 days of negotiations.

In addition to trade, Wall Street focused on bond yields and the Fed's monetary policy stance, with some investors expecting a slower pace of growth than expected.

"It's a crisis of confidence in the trade situation, what's going to happen and maybe a little bit the Fed's crisis of confidence, given the speed with which they had to change their tone said Walter Todd, chief investment officer at Greenwood Capital. Associates

Technology stocks fell, with the S & P 500 technology sector dropping 3.5%. Health care stocks, which had the largest gain among the major S & P 500 sectors this year, declined 2.5%.

The 50-day moving average of the S & P 500 has fallen below the 200-day moving average, a phenomenon known as the "deadly cross", which some market observers see as a bearish market signal short term.

During the week, the Dow Jones index lost 4.5%, the S & P 500 index, 4.6% and the Nasdaq, 4.9%.