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Duolingo's Stock-Based Compensation Is the Risk the Market Is Missing
Duolingo's stock-based compensation is eating into reported earnings and widening the gap between net income and free cash flow. The AI-disruption narrative is priced in. The SBC problem is not.
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Duolingo shares have fallen sharply over the past 12 months. The sell-off was triggered by fears that artificial intelligence will make language-learning apps obsolete, and it accelerated after the company issued softer-than-expected guidance.
AI is a real threat. Free tools like ChatGPT can translate and explain grammar, which cuts into the value proposition of a paid subscription. That risk is widely discussed and already priced into the stock at current levels.
The quieter problem is stock-based compensation. Duolingo's SBC as a percentage of revenue has stayed elevated even as the top line grows. For a company still spending heavily on marketing and product development, that means less cash left over for reinvestment or buybacks.