Large movements, high volume, in currency not stock. The powers that be know the direction. How difficult could it be for them to make piles of money out of thi

Large movements, high volume, in currency not stock. The powers that be know the direction. How difficult could it be for them to make piles of money out of this? How difficult would this be to cover up? I'm not very familiar with the mechanics of forex markets, but I'm fairly certain that a small circle of well-connected people has made a killing out of this. Which raises a question... To what extent was plain and simple greed part of the motive for setting up this unorthodox policy? Insider trading.