It's google. They will have to come with an API for programmers to use and scrape... Otherwise what's the point.
Still good old Yahoo works...
A very good finance app is an app/website that doesn't change their design, it can be brutally minimal in design but design should remain consistent for years. You investors don't want to learn your design and adapt. They are just looking quick information which they know it's available in a specific location in a page of financial result.
