Coinspeaker Tesla (TSLA) Stock Jumps Over 5% as Jefferies Upgraded It to BuyTesla (TSLA) caught an upgrade Monday morning that sent its stock up over 5%. Even though some analysts see opportunity in the stock, many questions remain about how the COVID-19 crisis will affect electric-vehicle demand.Tesla (TSLA) Stock Jumps Over 5% as Jefferies Upgraded It to Buy