Group all lots under a single stock to show overall stock position.

As someone who dollar cost averages into a position, I have a lot of lots for the same stock. It would be nice to have those show up under a single "overall" stock position such that you can see the average for the entire position with an expansion to show each individual lot that contributes to the average. I've seen this in other platforms, so I know it is possible, it's just making sure the math is done correctly.