When the AI boom took hold, few companies looked more vulnerable than Duolingo Inc. (NASDAQ: DUOL). If a chatbot could teach you a language for free, so the thinking went, why bother with a dedicated app at all?
That fear sent the stock down more than 80% in less than a year, but since bottoming out last April, shares of the language-learning app have been rallying hard. With the stock having gained about 70% through the end of last week, this week’s jump came thanks to a fresh analyst upgrade.
