We've just added a new feature to the home page. A stock watch list. You can add stocks to this list and it will show you the change from yesterday in percentage terms.
To add stocks to the list you will notice the following on each of the profile pages:
Click this will toggle it on or off your watch list. When you're watching a few you will see something like the following on your home page.
You can stop watching it from there by clicking the X.
You may need to re-arrange your panels to make it look more cohesive.