Kenneth Griffin, CEO of Citadel, is seen in a framegrab from live video as he testifies about stock trading and GameStop, during an entirely virtual hearing of the U.S. House of Representatives Committee on Financial Services entitled “Game Stopped? Who Wins and Loses When Short Sellers, Social Media, and Retail Investors Collide?”, in Washington, U.S., February 18, 2021. House Committee on Financial Services/Handout via Reuters/File Photo