InvestmentsTop Global NewsMarketsReal Estate Robinhood, Melvin Capital, Citadel executives expected to testify in Congress on GameStop turmoil: sources By financialnews_rlv83x - February 10, 2021 0 165 Executives from Robinhood, Melvin Capital and Citadel Securities are expected to testify before a House panel at a Feb. 18 hearing exploring trading turmoil in GameStop Corp and related stocks, said two sources familiar with the matter.