"You will notice that the first time you open the Android app, your portfolio is automatically downloaded in the background and it continually syncs with the Google Finance when running, so any changes on the phone will be seen on the website.

As the application took shape we added additional features with the aim of allowing users to get stock quotes, market data and news as fast as possible."

http://3.bp.blogspot.com/_VSHVvaL4As4/Sa2-i9xc1aI/AAAAAAAAAJ0/JP8wfLwIzbM/s400/android_ss_company.png
http://googlefinanceblog.blogspot.com/2009/03/finance-for-android-application.html