China-based electric vehicle (EV) manufacturer Nio Inc (NYSE:NIO) is one of the best performing stocks on the New York Stock Exchange (NYSE) today. At last check, NIO is 9.4% higher at 9.21,followingtheunveilingofitsnewestfour−setET9EV,aflagshipsedanthatisplannedtorivalthelikesofPorscheandMercedes−Benzwithanestimatedstartingpriceof112,000. Options traders are taking notice of the Tesla (TSLA) competitor's announcement. Already today, 351,000 calls and 57,000 puts have crosse ...