IPO Stock Of The Week Duolingo (DUOL) regained a key level this week and is approaching its latest buy point in the new stock market rally. Duolingo is a member of IBD's IPO Leaders screen. X Duolingo offers a mobile learning platform for languages. The app offers 40 languages, including Spanish, English, French, German, Italian, Portuguese, Japanese and Chinese through the Duolingo app. The company sees growth drivers in an addressable market of 2 billion online language learners. In March, the company partnered with ChatGPT to offer generative AI tools to its language learners through Duolingo Max. On Aug. 8,…