Despite the iShares MSCI China ETF (NASDAQ:MCHI) up by about 16% year-to-date, beating both the S&P 500 and Nasdaq 100, Nio (NYSE:NIO) stock is down by nearly 40% this year.However, a major catalyst is on the way, as Nio has confirmed that it will report its first-quarter earnings on June 6 before the market opens. Last month, the electric vehicle (EV) company delivered 15,620 vehicles, up by 134.6% year-over-year (YOY). That brought year-to-date deliveries to 45,673 vehicles, up by 21.2% YOY.For the quarte ...