Trading algorithms are potential weapons of mass destruction: here they blew up their creator.
http://www.economist.com/blogs/schumpeter/2012/08/knight-capital-0
And here is SGX trying to encourage more of this type of trading here, which incidentally affects adversely (even if nothing goes wrong) other players esp retail investors. And meanwhile SGX is using SIAS to get heartlanders to play in the casino. I was present when Dr Goh Keng Swee called the stock market a casino.
