Yeah I wish they had all the stock apps or at least the choice to put them on there. I think they ran out of time when building the software and porting things over to iPad friendly versions and just decided these were ones people used the least so leave them off.
Weather Chanel app is gorgeous but it is SUPER SLOW and buggy really besides netflix is the only app that has crashed on me. I use bloomberg app for stocks but I really really miss the stock iphone app because its news feature and interface was much more user friendly. Bloomberg is more indepth and has great features but too much work to find out quick info on my stocks.
Is there any reason why you can't use Yahoo Finance or your own online brokerage account?
Why does there have to be an App for everything when you have a browser?