Apparently, meme stocks are back -- but Nio has had some actual good news for investors, too. Shares of Chinese electric-vehicle (EV) maker Nio (NIO 6.71%) were moving higher on Monday as investors revisited former meme stocks that enjoyed social media-powered surges earlier in this decade. But the company had recent good news of its own to report.As of 2:25 p.m. ET, Nio's American depositary shares were up about 6.7% from Friday's closing price.A "meme stock" surge follows strong deliveriesA slew of former ...