Two brokerage units of Robinhood Markets have agreed to pay $30 million to settle an investigation by the Financial Industry Regulatory Authority into a range of violations, some of which date back more than a decade.

The brokerage regulator said on Friday that Robinhood will pay a $26 million civil fine and $3.75 million of restitution to customers.

(Bloomberg) -- Two units of Robinhood Markets Inc. agreed to pay $26 million to settle Financial Industry Regulatory Authority allegations that it failed to respond to red flags about potential misconduct and didn’t verify the identities of thousands of customers.