Exactly. Competition among all the HFT entities has squeezed a lot of the volatility out of the market: "Volatility, a measure of the extent to which a share’s

Exactly. Competition among all the HFT entities has squeezed a lot of the volatility out of the market: "Volatility, a measure of the extent to which a share’s price jumps around, is about half what it was a few years ago." Quoted from here: http://www.businessweek.com/articles/2013-06-06/how-the-robots-lost-high-frequency-tradings-rise-and-fall#p2 http://www.businessweek.com/articles/2013-06-06/how-the-robo... Although I wish I could find a better article / source with more info and some hard data to back that up. That sentence is not nearly as compelling as it could be if it had more details.