At least this guy doesnât argue that high frequency trading, because of the large volume it creates, provides liquidity for the market â a disingenuous and specious claim. It so happens that volume is not synonymous with liquidity. After the first 500-points of decline on Thursday, the ârobotsâ as you call them shut off their machines and took their bids with them as they ran for the hills. Some liquidity. http://www.nytimes.com/2010/05/08/opinion/08durbin.html