<P> The May 6, 2010, Flash Crash also known as the Crash of 2: 45, the 2010 Flash Crash or simply the Flash Crash, was a United States trillion - dollar stock market crash, which started at 2: 32 p.m. EDT and lasted for approximately 36 minutes . Stock indexes, such as the S&P 500, Dow Jones Industrial Average and Nasdaq Composite, collapsed and rebounded very rapidly . The Dow Jones Industrial Average had its biggest intraday point drop (from the opening) up to that point, plunging 998.5 points (about 9%), most within minutes, only to recover a large part of the loss . It was also the second - largest intraday point swing (difference between intraday high and intraday low) up to that point, at 1,010.14 points . The prices of stocks, stock index futures, options and exchange - traded fund (ETFs) were volatile, thus trading volume spiked . A CFTC 2014 report described it as one of the most turbulent periods in the history of financial markets . </P> <P> According to a December 6, 2015 article in the Wall Street Journal, new regulations put in place following the 2010 Flash Crash--when "bids on dozens of ETFs (and other stocks) fell as low as a penny a share--proved to be inadequate to protect investors in the August 24, 2015 flash crash, "when the price of many ETFs appeared to come unhinged from their underlying value ."--ETFs were put under greater scrutiny by regulators and investors . Analysts at Morningstar claim that, </P> <P> "ETFs are a' digital - age technology' governed by "Depression - era legislation ." </P>

When was the last time the stock market had a 10 correction