Algorithmic anger as LSE suspends systematic trading

Algorithmic software providers have reacted angrily to the London Stock Exchange's decision on 7 July requiring all program traders to suspend use of their systems

Algorithmic software providers have moved to refute claims by the London Stock Exchange that algorithmic traders can exacerbate dangerous volatility in times of market stress - claims that caused the LSE to compel algorithmic traders to switch off their systems on 7 July.

On 7 July, around one and a half hours after four suicide bombers struck London's transport system, killing 56, the LSE enacted "fast market" rules, says Catherine Mattison, LSE spokesperson, requiring the switching off of all

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