Robinhood Markets Inc., which had sought to go public this month, has seen its listing plans slowed in recent weeks by a back-and-forth with regulators over its prospectus, according to people familiar with the matter. The U.S. Securities and Exchange Commission has been asking Robinhood about its growing cryptocurrency business, one of the people said, asking not to be identified because the matter is private. While a listing might come this summer, the popular trading app’s plans could also slip into the fall, one of the people said. The company aims to reveal its financials as soon as possible and to go public as ... (full story)