I have an ES day trader that is a CTA with a $100,000 allocation that trades 4 contracts at a time. That produces swings what are frequently $800 to $1000 per day. I think almost 1% swings per day are too much so I cut him back to 2 contacts per trade. I don't see how someone can trade the higher leverage unless it's scalping or some pair without getting big swings. Those big swings are not good for trading OPM. Bob