I trade a futures account for my firm. My size is fixed to X contracts, profit/loss/margin requirement is irrelevant. I can trade X contracts until they say I can trade more or less. I want to journal my performance in terms that other traders/organizations may understand. Return on equity doesn't make much sense to me- saying I average X$ per month wouldnt communicate performance vs size, saying I pick up Xc or points per month does sort of make sense... Any experience/suggestions?