stockcam I'd been eyeing language learning app, Duolingo (NASDAQ:DUOL) for a while, and finally bit the bullet and bought the stock around $190. I think it was a great opportunity and even though it has since climbed to$205, there is still room for the stock to double in the next 3-4 years on steady revenue growth of 30% and adjusted earnings growth of 98% as operating margins improve and turn the business into an earnings story as well. For now, it generated a strong operating cash flow of $153Mn in 2023 ...