Once the base style and features of the app were established, I sketched out a few concepts for each of the pages and tweaked them until I was happy with the result. Then, I moved onto Adobe Xd to create the wireframes for the screens.
I set a twelve columns grid that would allow the maximum amount of flexibility when creating UI elements, and grant responsiveness if the elements needed to be resized for different devices (i.e. tablets, notebooks, etc). Further, the main navigation bar was kept at the bottom of the screen and it featured the most prominent features (Overview, Investments, Stocks, Messages and More).