Ark Invest's Cathie Wood calls out Wall Street's bet against her innovation fund: CNBC After Hours

CNBC.com's Pippa Stevens brings you the day's top business news headlines. On today's show, CNBC's Kristina Partsinevelos recaps Cathie Wood's response to Wall Street shorting her ARK Innovation Fund. Plus, Robinhood posts a strong quarter in its first earnings report as a public company—but warns that trading on the app is slowing down.