indeed i have and it shouldnt be too difficult. Movietimes does the same task so it'd be easy to port. The finance section of http://m.yahoo.com has some stock information but its not in a ticker format and its delayed by 20 mins. But it would allow users to specify which stocks they wanna pull data from and give all of this information:
You may want to try to use something like iGoogle. You can add a stock section to your igoogle page, and add the stocks you want to monitor in it.
There are a lot of pages like this that you can customize...
This would allow someone to set up the stocks they want to monitor, and keep the scripting aspect wayyyyy down, as all you would then need to do is just scrape the displayed stocks that you want to monitor on a single page.
Otherwise, in the skin, you have to have a search for stock, and keep track of them in an ini, Then each time you display stocks, read the ini, search for each stock individually to get the results, slowing things way down, and a lot more chance of something breaking