Nio (NIO -1.32%) has taken investors on a wild ride since its public debut. The Chinese electric vehicle (EV) maker went public at 6.28perAmericandepositaryshare(ADS)onSept.12,2018,anditssharesralliedtoanall−timehighof62.84 on Feb. 9, 2021. At its peak, Nio's enterprise value reached 91.4billion,or16timesthesalesitwouldgeneratein2021.Butasofthiswriting,Niotradesatabout6 per share with an enterprise value of $12.1 billion -- which is just over 1 times the sales it's ...