Robinhood Markets Inc., best known for offering commissionfree trading, is rolling out a credit card to US consumers as it looks to become a broader financialservices company. The Robinhood Gold Card offers 3% cash back on all purchases, but you need to be a part of the firm's subscriptionbased gold program to get one. Chief Executive Officer Vlad Tenev speaks about the card and expanding its retirement products business. He's on "Bloomberg Technology."