United Airlines Moves for More Legroom; Facebook Joins $1 Trillion Club; Cathie Wood Launches New ETF

United Airlines has placed the biggest aircraft order in its history; CEO Scott Kirby and CNBC’s Phil LeBeau discuss what the 270 jet purchase means for a post-pandemic travel rebound and for passenger comforts. After a standout year at Ark Invest and a rocky start to 2021, Wall Street’s star stock picker Cathie Wood is launching a bitcoin ETF. Plus, Facebook has joined the $1 trillion club, Juul is settling for $40 million, and CNBC Disruptor and App store favorite Duolingo is going public.