https://www.reuters.com/article/us-usa-stocks-robinhood-exchange/robinhood-ceo-calls-for-changes-to-exchange-pricing-rules-idUSKCN2E028L >U.S. securities rules should be changed to allow stock exchanges to quote bids and offers in price increments of less than a penny so they can better compete with wholesale brokerages for retail orders, Robinhood Chief Executive Officer Vlad Tenev said on Thursday.