A feature on Robinhood's new web platform raises questions about the strength of its user base

Robinhood, the popular stock-trading app that reportedly landed a $5.6 billion valuation recently, claims to have 4 million registered users.
The company recently rolled out a web platform featuring a suite of new features originally unavailable on its sleek smartphone app.
But data showcased on the web platform also raises questions about the strength of its user base. Apple is the most popular stock, with about 141,000 owning it on the platform, according to the data. That represents just 3.5%