Show quantity change on Portfolio page

As a possible feature, on the portfolio page perhaps adding an indicator (green up arrow, or red down arrow) next to the Quantity value might be a good way to provide quick information if there was a position change in the selected time period. This sort of information is available on the pricing, might be handy to add to the quantity. I DCA on a monthly basis, but I do check data on a week by week basis from time to time, so it'd help me understand if I'm looking at a week where volumes have changed. I'm a small purchaser though, so perhaps its a trivial item.