Instead of taking commissions from customers, Robinhood receives them from the trading venues to which it steers their orders, a controversial but common practice. It also earns returns from the cash clients leave in their accounts, and plans soon to offer margin trading—the buying of stock with borrowed money—for which it will charge a fee.
is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference.
These apps run on a custom built blockchain, an enormously powerful shared global infrastructure that can move value around and represent the ownership of property. This enables developers to create markets, store registries of debts or promises, move funds in accordance with instructions given long in the past (like a will or a futures contract) and many other things that have not been invented yet, all without a middle man or counterparty risk.