By Craig Mellow Order Reprints NIO EP9 Courtesy of NIO You think Tesla (ticker: TSLA) stock had a good year? Shares in Elon Musk’s electric-car dynamo jumped a mere 670% during 2020. Chinese competitor Nio (NIO) posted an 11-fold increase. EVs aren’t the only sector where emerging market stars left U.S. names in the dust. Amazon.com’s (AMZN) 75% advance lagged Latin American e-commerce sensation MercadoLibre’s (MELI) 200%. Southeast Asian online marketplace Sea (SE) climbed fourfold. Chinese social-media power Tencent (700: Hong Kong) outperformed Facebook (FB) 50% to 30%. ... Close Emerging Markets Have Plenty of Hot Stocks. They Don’t Come Cheap.