Quote from gmst:
everyone should post their pnl also at the end of day ..
This would be most helpful I think if expressed as points gained or lost, per contract traded.
So for example:
* 4 trades, trading 3 contracts each time, and making 3 points on each trade, gives +12 total points, yet per contract you had a +4 day.
* 4 trades, trading 1 contract each time, making 2 points on each trade, gives +8 total points, and per contract you had a +8 day
* 1 trade, trading 40 contracts, making 20 total points on this trade, gives a daily per contract win of +0.50
This does not divide further and consider points per trade; who cares if it takes you 1 trade or 10 to make 5 points? As long as commissions are accounted for, then it makes no difference.
What this does, however, it strip away the size, and show how you personally did, free of any account size bias. I know it's not as simple as "add size," however it means that if the second trader in the above example were trading with 40 lots like the third trader, that he would have made 320 points, compared with the third trader's 20 points. His actual trading performance was much better (16x better actually) than the third trader, even though he made only 40% of the money. In other words, who would have done the best, if they were all trading the same size?