Source: Kevin Mazur / Getty TechCrunch reports that JAY-Z has joined Nas and Snoop Dogg as a big time investor in the Robinhood app, a free stock-trading platform that allows users to build their portfolios and test cryptocurrency markets without having to deal with fees or middle men. the app currently has over 3 million users and is worth about $1.3 billion.

Source: Diamonds Up: Jay Z Invests In Free Cryptocurrency & Stock-Trading App