Robinhood Markets (HOOD), the financial services platform, has agreed to pay $29.75 million to settle regulatory probes by the Financial

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.

Shares of Robinhood Markets retreated after the two of its units agreed to pay almost $30 million to resolve claims from the Financial Industry Regulatory Authority. The stock was down 6.6% at $41.50 in premarket trading.