Nio's gross profit margins are now similar in size to those of Ford Motor Co.Good news for (new) Nio (NIO -1.63%) stock investors! Yesterday, Nio announced its first-quarter 2024 earnings results, and Nio stock promptly sold off. Shares of the Chinese automaker are down more than 8% since earnings came out. That means that -- as long as you think Nio stock is a buy -- the stock is now selling at a discount.And according to Citigroup analyst Jeff Chung, this is exactly how you should be looking at this news. ...