Operation Hope’s John Hope Bryant and Shark Tank co-host Kevin O’Leary discuss what’s at stake in the House Financial Services Committee’s hearing on the Reddit- and Robinhood-fueled market volatility this week. Real estate developer Roderick Hardamon tells CNBC’s Diana Olick how he’s helping to rebuild Detroit and improve access to capital for women and minorities in his community. Plus, Bezos is back at the top of the billionaires list, Texas is weathering energy outages as the cold front wears on, and Dr. Anthony Fauci is clarifying the U.S. vaccination timeline.