A program written in Dr. Racket Scheme that makes use of lists, higher order procedures (e.g. map, filter, reduce) and/or recursion. If all of those could be used it would be best. Also please make sure to use data abstraction (i.e. don''t violate abstraction barrier).
The application to feature a GUI and to use the web API for the site stocktwits to display trending messages for stocks, log a user in, display the last messages for a stock, etc, and also a way to open the site tradingview.com for a stock symbol entered by the user, preferably within a GUI window; so for example if the user wants to look up information for Apple stock, the application would display the last messages for $AAPL