The porfolio page looks good but I have a suggestion to make it a bit more user friendly. Currently the columns are very wide. Makes it difficult to track all the info on a stock. For example the "today's change" is twice as wide as needed as well as the columns for value and average paid. These columns could be made half as wide and make it easier to see across on a stock from the name to the net gain/loss.
Now if for formatting purposes if you wish to keep that page that width to match the 3 boxes above you might add a highlight feature instead of making the columns narrower. Basically when you mouse over a stock the entire row for that stock becomes highlighted making it easier for the eye to track all the info for that stock all the way across.