MIAMI – Robinhood wants to be much more than just a brokerage app. In fact, it would also like to find a permanent home on your desktop computer.

On Wednesday, the company unveiled a highly anticipated new desktop trading platform for active traders, as well as new tools and mobile features that the company hopes will attract more customers, especially day traders and investors who manage their portfolios more actively. Robinhood unveiled the desktop platform, called Robinhood Legend, at its first-ever active trading conference,…