Duolingo shares soared 39% on its Nasdaq debut, but did the language app maintain its winning streak? Posted byEntrepreneur en Español July 30, 2021 Leave a comment on Duolingo shares soared 39% on its Nasdaq debut, but did the language app maintain its winning streak? In the aftermath of the pandemic, Duolingo became a favorite among language and learning apps, earning a valuation of $ 6.5 billion on its Nasdaq debut.