Nasdaq:DUOL
Duolingo, Inc.
Duolingo is the world's leading free language learning platform monetizing a massive global user base through premium subscriptions and data-driven AI features.
Key Metrics
Investment Thesis
Bull Case
The stock is attractive given the explosive revenue growth trajectory from $369.5M in 2022 to $1.04B in 2025 and the transition to strong profitability with a net profit margin expanding significantly year-over-year. The company's massive cash position of $1.04B provides ample runway for R&D investments that are directly driving the dramatic increase in operating profit.
Bear Case
Potential investors should be wary of the high non-cash adjustments totaling $567.4M which distort the view of actual cash generation from operations relative to total assets, and the substantial retained earnings deficit of $288.2M suggests historical burn that may not be fully resolved. Additionally, heavy reliance on a single product ecosystem creates concentration risk if user retention rates decline.
About Duolingo, Inc.
Duolingo, Inc. operates a freemium mobile application that offers language learning courses in over 40 languages to millions of users globally. The company serves individual learners and corporate clients through its primary app and premium subscription model, supported by strategic acquisitions and heavy investment in research and development.
Analysis
Management Discussion
Recent financial performance highlights a significant operational turnaround with net income surging to $414.1M in 2025 compared to just $16.1M the prior year, driven by robust revenue growth to $1.04B and improved cost management. However, investors should note that cash flow from investing activities was negative $107.7M, largely due to other investing outflows of $158.9M, indicating aggressive expansion or M&A activity.
Industry Overview
The global online language education market is experiencing rapid transformation driven by artificial intelligence integration, creating opportunities for companies that can scale personalized learning at low marginal costs. Duolingo is well-positioned in this sector as the dominant player with the largest installed base of active learners worldwide.
Financial Statements
Income Statement
Balance Sheet
Cash Flow
| Metric | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| Revenue | $369.5M | $531.1M | $748.0M | $1.04B |
| Cost of Revenue | $99.4M | $142.1M | $203.6M | $288.1M |
| Gross Profit | $270.1M | $389.0M | $544.4M | $749.5M |
| Operating Expenses | $335.3M | $402.3M | $481.8M | $613.9M |
| Operating Income | $-65.2M | $-13.3M | $62.6M | $135.6M |
| R&D | $150.4M | $194.4M | $235.3M | $306.3M |
| G&A | $117.8M | $132.1M | $156.0M | $181.9M |
| Marketing | $67.0M | $75.8M | $90.5M | $125.7M |
| Stock-Based Comp | $73.8M | $95.2M | $110.5M | $137.4M |
| D&A | $4.9M | $7.1M | $10.9M | $14.4M |
| Depreciation | $3.1M | $4.1M | $5.0M | $5.2M |
| Other OpEx | $0 | $0 | $0 | $0 |
| Non-Operating Income | $6.6M | $31.0M | $39.7M | $46.8M |
| Pre-Tax Income | $-58.6M | $17.8M | $102.3M | $182.4M |
| Income Tax | $938.0K | $1.7M | $13.7M | $-231.7M |
| Continuing Ops | $-59.6M | $16.1M | $88.6M | $414.1M |
| Discontinued Ops | $0 | $0 | $0 | $0 |
| Net Income | $-59.6M | $16.1M | $88.6M | $414.1M |
| Minority Interest | $0 | $0 | $0 | $0 |
| Net to Common | $-59.6M | $16.1M | $88.6M | $414.1M |
| Metric | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| Current Assets | $697.2M | $897.8M | $1.10B | $1.44B |
| Cash & Equivalents | $608.2M | $747.6M | $785.8M | $1.04B |
| Accounts Receivable | $46.7M | $89.0M | $128.9M | $162.8M |
| Prepaid Expenses | $7.2M | $7.3M | $14.9M | $16.6M |
| Other Current Assets | $35.0M | $53.9M | $172.0M | $220.8M |
| Long-Term Assets | $50.2M | $56.2M | $200.1M | $555.6M |
| PP&E (Net) | $13.0M | $11.8M | $18.9M | $36.3M |
| Intangibles | $8.5M | $16.0M | $19.9M | $28.3M |
| Goodwill | $4.0M | $4.0M | $10.5M | $35.3M |
| Operating Leases | $22.5M | $19.1M | $47.5M | $80.4M |
| LT Investments | — | — | $98.3M | $135.1M |
| Other LT Assets | $2.1M | $5.2M | $5.0M | $240.2M |
| Total Assets | $747.3M | $954.0M | $1.30B | $1.99B |
| Current Liabilities | $181.8M | $277.4M | $422.2M | $551.1M |
| Accounts Payable | $1.2M | $2.4M | $6.4M | $8.0M |
| Current Leases | $4.9M | $3.9M | $2.6M | $7.2M |
| Deferred Revenue | $157.6M | $249.2M | $372.9M | $496.2M |
| Taxes Payable | $1.1M | $792.0K | $6.6M | $1.3M |
| Other Current Liab | $-4.9M | $-3.9M | $-2.6M | $-7.2M |
| Long-Term Liabilities | $23.5M | $21.1M | $54.9M | $94.0M |
| LT Operating Leases | $23.5M | $21.1M | $54.7M | $93.8M |
| Other LT Liab | $0 | $0 | $291.0K | $249.0K |
| Total Liabilities | $205.3M | $298.5M | $477.2M | $645.2M |
| Shareholders' Equity | $542.1M | $655.5M | $824.5M | $1.35B |
| Paid-In Capital | $772.6M | $869.9M | $950.4M | $1.06B |
| Retained Earnings | $-230.5M | $-214.4M | $-125.8M | $288.2M |
| Total L&E | $747.3M | $954.0M | $1.30B | $1.99B |
| Metric | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| Net Income (CFO) | $-59.6M | $16.1M | $88.6M | $414.1M |
| Non-Cash Adjustments | $35.9M | $-1.4M | $10.1M | $-205.2M |
| Working Capital Changes | $77.3M | $138.9M | $186.8M | $178.9M |
| Cash from Operations | $53.7M | $153.6M | $285.5M | $387.8M |
| Capital Expenditures | $5.6M | $3.2M | $12.1M | $18.1M |
| Cash from Investing | $-14.2M | $-13.6M | $-217.3M | $-107.7M |
| Share Buybacks | $0 | $0 | — | — |
| Cash from Financing | $14.8M | $2.1M | $-30.0M | $-29.5M |
| FX Effect | $0 | $0 | $0 | $0 |
| Net Change in Cash | $54.3M | $142.2M | $38.2M | $250.6M |
| Beginning Cash | $553.9M | $608.2M | $750.3M | $788.5M |
| Ending Cash | $608.2M | $750.3M | $788.5M | $1.04B |
Frequently Asked Questions
How does Duolingo, Inc. make money?
The company derives revenue primarily from its freemium mobile app where users pay for Duolingo Super (subscription) or purchase individual lessons, supplemented by B2B enterprise solutions and strategic acquisitions that expand product offerings.
What are the main risks for DUOL?
Rapidly increasing research and development expenses relative to revenue growth could erode margins if user acquisition costs rise, regulatory changes in data privacy could impact their global ad-supported ecosystem, and intense competition from emerging AI-native language learning startups threatens market share.
What is DUOL's competitive advantage?
Duolingo leverages proprietary gameification mechanics to maintain high daily active user engagement, utilizes a massive dataset to train its AI models for personalized learning paths, and enjoys significant brand loyalty due to its low barrier to entry and free core functionality.
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Not financial advice. All content is for informational purposes only. Data may contain errors. Consult a qualified financial advisor before making investment decisions.