Duolingo Stock Popped 30% This Week: Here's Why

Shares of Duolingo (DUOL -0.89%) shot up over 30% this week, according to data from S&P Global Market Intelligence. The language learning and education app saw rapid user and revenue growth yet again in the fourth quarter, leading investors to buy up the stock. Shares of the stock hit an all-time high and now sit at a market cap of $10 billion.Here's why Duolingo stock soared more than 30% this week.Growing users, expanding monetizationThis week, Duolingo released its financial results for the last three mo ...