SoFi downgrades, Virgin Galactic's flight plans, Musk on Tesla's market cap: Trending tickers

Yahoo Finance Live breaks down the day's top trending tickers including: SoFi shares closed slightly lower after receiving downgrades from Piper Sandler and Bank of America, both citing valuation concerns. Virgin Galactic shares soared on its plans to launch its first commercial space flight. Tesla stock rises as Elon Musk said at a conference that the company's market cap is tied to whether or not it can solve autonomous driving.