It's a good concept and they have a working platform for users. They have well documented everything.
Trading Securities and Commodities online is a profitable business for both the broker and the investors. What more would you aspect when it be done alongside of crypto currencies in a single platform. They seem to have listed popular shares around the world but I wonder how legit they would operate. It would be a hassle to trade every shares for every users in stocks market around the world. If they do have the proper presence in every markets and are legally doing it, they would be the pioneer of next great thing in crypto sphere.