Please improve the stock graph on the ipad

Your site is great. I use it daily. But can you improve the stock graph. It is a tiny little box on the top left corner. Maybe add an option so that when you click,on the graph  it expands to the width of the screen, still leaving plenty of room for all the other detail below it. It is so small, hard to read and sometimes not even accurate, in that the ending price on the graph does not equal the actual stock quote. Many times I leave and go look at the graph on etrade or cnbc ipad sites as they are so much better.