Stock market app Robinhood's glitch lets man turn $4,000 into $1 million

A glitch in US-based stock trading app Robinhood is allowing users to trade stocks with excess borrowed funds. The cheat code was being shared on Reddit, with one trader claiming he took a $1 million position in stock using only a $4,000 deposit. Robinhood said it was "aware of the isolated situations and communicating directly with customers".