Does its thing well

Clean, clear ticker. Unobtrusive, smooth scrolling and nifty.
You can position it wherever on your screen - although the menubar option is not to my liking but you can turn it off as easily as well.
If you want to hide it from your fellow colleagues, run it on another desktop :)

If I were to suggest an additional feature without sacrificing simplicity, please provide a click and drag to one or the other direction to start scrolling in that direction.
Best stock ticker utility I have seen for sure.

UnixYoda about Stock + Pro