How come when I look at all these ETFs, the chart only goes back say, 3 months, 6 months? Do they just not offer charting records going back that far (the brokers?), or do the funds somehow get renamed and or reset? For instance, I have just recently started trading USO, my broker only offers charts going back to April 2006, EWW only goes back to October or November. Anyone want to give me the quick watered down answer? Just dont want to get caught with my pants down when they say "fund expired, take position as is" or something very bizarre like that.