I use Sencha's EXTJS 5.1, a slightly older version than what is currently available from Sencha
Repo should be cloned with the command:
git clone --recursive https://github.com/alex9311/sencha-demo.git
The build directories are gitignored so you will need Sencha CMD to rebuild them after cloing. I believe Sencha CMD will complain if a version other than 5.1.1 is used, since that is the ext version used here.
The app shows data for a set of American stocks. The data is loaded from yahoo finance upon each page load or data reload.
After cloning the repo, run the following to rebuild the build folder to get the application working
cd stocks
sencha app build
See the application-specific README file for an overview of the source code.