Duolingo, Inc. (DUOL) shares skyrocketed 21.07% in after-hours trading on Wednesday, following the release of its impressive second-quarter 2025 financial results, raised full-year guidance, and the announcement of a strategic acquisition.

The language-learning platform reported a stellar performance for Q2, with earnings per share of $0.91, significantly surpassing the FactSet analyst consensus of $0.59. Revenue came in at $252.3 million, beating estimates of $240.7 million and marking a 41% year-over-year increase. Subscription revenue, a key metric for the company, grew by 46%. The company's user base also showed robust growth, with daily active users reaching 47.7 million and monthly active users hitting 128.3 million.

Adding to the positive sentiment, Duolingo raised its full-year 2025 guidance. The company now expects annual revenue between $1,011 million and $1,019 million, exceeding the previous estimate of $996.6 million. For the third quarter, Duolingo projects revenue growth of 34% year-over-year. In a strategic move to enhance its music course offerings, the company also announced the acquisition of NextBeat, a London-based music gaming startup. This acquisition brings in 23 experts in game design and music licensing, potentially making Duolingo's platform more engaging and effective for learners. The combination of strong financial results, optimistic future outlook, and strategic expansion appears to have fueled investor enthusiasm, driving the significant after-hours stock surge.