Witnesses for this one-panel hearing will be: • Keith Gill • Kenneth C. Griffin, Chief Executive Officer, Citadel LLC • Steve Huffman, Chief Executive Officer, Co-Founder, Reddit • Gabriel Plotkin, Chief Executive Officer, Melvin Capital Management LP • Vlad Tenev, Chief Executive Officer, Robinhood Markets, Inc. • Jennifer Schulp, Director of Financial Regulation Studies, Cato Institute