Flash crash charges garner increasing skepticism in high-speed world
What happened on May 6 was a crash in the financial market. That HFT played some role in it is beyond a doubt, but there was real panic in the market all day on May 6, 2010.
Below is an hourly chart of the S&P 500 Index. The index is moving down steadily and in the afternoon, there is the flash crash.
Here's one of the ETFs I remember watching that day: iShares S&P U.S. Preferred Stock (PFF).
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