Knightmare on Wall Street

2:30 AM ET Fri, 3 Aug 2012

Responding to Knight Capital Group's $440 million loss from a trading glitch, Mike Lenhoff, chief strategist at Brewin Dolphin, told CNBC. "One has to look at this and say, look what is going on here, we don't want to be led by machines we are supposed to be led by rational decision making and machines are supposed to be the means to the end."