Robinhood shares dip after PayPal's US stock-trading portal report

Online brokerage Robinhood's shares slumped nearly 7% on Monday after a report said PayPal may start an online brokerage in the US and another said regulators were looking at a possible ban on the payment for order flow (PFOF) practice. US SEC Chair Gary Gensler told Barron's in an interview that the practice has "an inherent conflict of interest".