"It's really a circus," says Haim Bodek, before he launches into an elaborate metaphor about Metallica ticket scalpers to describe how high-frequency trading (HFT) computers get their hooks into big pension fund investments (the "dumb money" in Wall Street parlance) before anybody else can. Bodek, a so-called quant (or quantitative analyst) who has held key positions at Hull Trading, Goldman Sachs and UBS, is famous among traders for having broken the Street's omertà and complained to the Securities Exchange Commission in 2011 -- after his own HFT firm, Trading Machines, crashed and burned -- about the secret "order types" that allowed rival algorithms to jump the queue and push him out of business.
http://tech.fortune.cnn.com/2013/11/11/video-the-wall-street-code/?iid=SF_F_River