The great flash crash of 2010: What happened to the Dow Jones and what is Navinder Singh Sarao supposed to have done?

The "flash crash" caused the Dow to fall as much as nine per cent (Source: Getty)

British trader Navinder Singh Sarao has been arrested, charged and is facing extradition to the United States over his role in the "flash crash". Sarao has appeared before Westminster Magistrates and has said he will contest this.

It started in the early afternoon of 6 May 2010, as panicked investors watched the Dow Jones Industrial Average plunge around nine per cent in a matter of seconds. And the most terrifying thing was nobody really knew why.

The Dow had recovered a large part of its losses by the time markets closed. However, the 1,000 point dive is still the index's second-largest point swing, and its biggest one-day intra-day decline ever.

Some stocks suffered huge price swings, with the share prices of two companies in particular - Procter & Gamble and 3M - falling 36 per cent and 18 per cent respectively.

So what happened on the day of the "flash crash"?

  • 8.00am -  Stock markets open slightly lower on ongoing concerns over the financial situation in Greece, as well as uncertainty emanating from elections in the UK, and the upcoming jobs report.
  • 2.00pm  - The Dow drops 161 points, or 1.5 per cent.
  • 2.42pm  - The Dow falls a further 3.9 per cent to 10,445.84 points.
  • 2.47pm - The index suddenly sheds another 5.49 per cent in five minutes of trading,

    hitting 9,872.57, meaning it's now down 9.16 percent from the previous day’s close.

  • 3.00pm  - Stocks rise again, reducing its total decline to 4.26 per cent, or 463.05 points.
  • 4.30pm -  The index ends the day at 10,520.32, 3.2 percent from the prior day’s close.
  • The United States' Securities and Exchange Commission and its Commodity Futures Trading Commission (CFTC) subsequently issued a joint report on the "flash crash" of May 6th.

    The report blamed the crash on a large sell order for "e-mini" futures on the S&P 500 by a mutual fund. These are a financial product which reflect investor confidence for the future performance of the S&P 500.

    It said the order placed that day was so large it overwhelmed the market, as there weren't enough available buyers, and consequently liquidity evaporated, causing prices to plummet.

    How does Navinder Singh Sarao fit into this? 

    The CFTC has alleged Sarao's financial trading company  had been entering into and subsequently withdrawing from thousands of orders in a bid to depress the price of the "e-mini" futures on the S&P 500. When the prices fell he swooped, buying them up, and profiting accordingly.

    They say his behaviour contributed to the fact that, when a huge trade was executed over in the United States, there wasn't enough liquidity, and the market was unable to handle it.

    This chart shows that, as more "e-mini" futures were traded, their price crashed (Source: SEC)

    Source: www.cityam.com

    Category: Bank

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