https://www.reuters.com/article/us-retail-trading-usa-congress/hedge-funds-robinhood-face-grilling-by-congress-over-gamestop-reddit-rally-idUSKBN2AI1C4 >Wall Street hedge fund managers, the chief executives of Robinhood and Reddit, and a YouTube streamer known as Roaring Kitty face a grilling on Thursday afternoon from U.S. lawmakers over the Reddit rally in shares of GameStop Corp.