"you own (qty) share(s) long" (or short) could maybe have another variable at the end of the statement - our average price we paid. i.e. "you own (qty) shares long @ (H$avg)".
I think it would make trading easier and faster. It would reduce the numerous times we need to flick back and forth searching through our Portfolio page to assess our gain/loss on a stock, when we could at a glance see the difference between our price and the current value.
I'm only suggesting this for the bubble. I noticed on the stock page that there is not enough room to display the value if you own a stock both long and short.
One last thing if you choose to adopt my suggestion. If we have a briefcase, then we obviously own the stock, and we know they are shares. Maybe the bubble could just say "(qty) long @ (H$avg)" and "(qty) short @ (avg)". Thanks 