Robinhood Co-CEO Baiju Bhatt. Photo credit: Steve Jennings/Getty Images for TechCrunch, under Creative Commons license

As revealed by a regulatory filing, Robinhood, the stock trading company, recorded $180 million in revenue in the second quarter of this year, nearly double the $91 million that it recorded in the same quarter last year. Robinhood’s revenue primarily comes from big trading firms that pay the company for order flows to then front-run their trades with the aim of earning profits usually by scrubbing some pennies off each transaction. Out of the $180 million revenue, $111 million came from options trading by Robinhood customers.

Robinhood is benefitting from a recent surge in stock market volatility as numerous more people flock to buying and selling stocks. For a hint, the company added three million funded accounts in the first four months of this year alone and recorded its three most active trading days of all time in June of this year. Other brokers such as TD Ameritrade and Etrade are also witnessing sizeable increases in revenue from order flows ($340 million in Q2, compared to $220 million in Q1 (TD Ameritrade); and $120 million in Q2, compared to $85 million in Q1 (Etrade).

Robinhood is notably fresh off $320 million in funding that valued it at $8.6 billion. The company has raised a total of $1.5 billion in private funding since its inception.