"Traders made about 13.3 billion euros ($18.2 billion) from market manipulation and insider dealing on EU equity markets in 2010, according to a commission study prepared in tandem with the proposals. " ROTFLMAO... They can't explain why HFT ( in its main liquidity provision activity ) is bad , but they can tell you how much they made through illegal activities...Don't ask how they came with that figure, they have sources in "market manipulation desks" of every bank...