High Frequency Trading, Fat Fingers, Flash Crash

Some useful background to HFT and flash crashes:

Ultra-fast trading blamed for flash crash”, Guardian, 8 July 2011

The Race to Zero, BoE Director A.G. Haldane speech, Beijing, 8 July 2011

The Markets are Mad: Is High-Frequency Trading Making Things Worse?“, Freakonomics.com, 12 August 2011

And for an insight into trading exuberance, try these real time commentaries from May 2010 when the S&P500 market lost around $1trillion within minutes