It would be useful if there is a column for Net Profit on the History page. There is a column for gross profit and fees, this would simply be the difference.
I especially would like this in markets where a lot of trades occur in a very short time, e.g. Obama approval weekly market. Many traders move thousands of shares through that market, and it would be great to have a summary of net profits/losses in the history tab.
Would also like to see one on my "shares" page so I don't have to look at all of my holdings to see which are up and which are down by checking my average share price against the latest price.
I'd like to have a graph that shows my net profit and loss, too