>Knight lost half a billion dollars in 30 seconds and not a single trade was reversed. If anything similar happened to any major hedge fund or market maker, not

>Knight lost half a billion dollars in 30 seconds and not a single trade was reversed. If anything similar happened to any major hedge fund or market maker, nothing would get reversed. I am pretty sure that NYSE canceled trades in six names after Knight; and the LULD pause rules that were introduced after the 2010 flash crash (unfortunately too late to save Knight) also create opportunities for human intervention.