The stock markets tumbled and a short-seller slammed Nio (NYSE: NIO) for fudging its numbers last month, but the electric vehicle (EV) stock still ended June with solid 24.9% gains, according to data provided by S&P Global Market Intelligence. A new product launch and big plans for the near future helped the stock bottom after its steep fall this year through May, and Nio stock has sustained its momentum in July so far. Nio put to rest investors’ fears about decelerating growth when it released its delivery numbers for May on the first day of June.