Duolingo, Inc.

NASDAQ Global Select
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Bearish -50

DUOL Stock: Should Investors Buy After the 79% One-Year Drop?

AI-generated analysis

📉 Duolingo (DUOL) shares have dropped 79% over the past year and 12.5% in the last three months while the S&P 500 rose, creating a debate on whether this is a buying opportunity or a signal of rising risks.

🔄 Investors must separate time horizons as the company retains long-term potential through product depth, new subjects, and AI personalization despite near-term headwinds.

📢 Management is prioritizing user growth over immediate monetization through 2026, which is expected to pressure margins before benefits appear in financial results.

💰 Total revenue reached $1.0 billion in 2025, up 39% from $748 million in 2024, with subscriptions accounting for about 84% of total revenue at $873.4 million.

🧠 Revenue growth relies on conversion and retention as the clearest upside comes from turning free users into paying subscribers without adding friction to the experience.

🤖 The near-term strategy includes keeping ad load stable, broadening AI-powered learning access, and running pricing tests, choices that are likely to compress margins in 2026 due to higher inference costs.

⚖️ Operating leverage is currently under pressure as research and development, along with sales and marketing expenses, are expected to grow faster than revenue during this investment year.

📊 Even after the stock price drop, Duolingo trades at a premium valuation of 34.62 times forward earnings compared to an industry multiple of 23.01 times.

🏆 The company historically carries a high premium with a five-year median forward P/E multiple referenced at 107.32 times, leaving limited room for execution missteps.

🎓 When compared to peers like Coursera and Chegg, Duolingo's valuation is increasingly sensitive to execution risks as it lacks the structural demand of institutional relationships found in higher education platforms.

⚠️ The risk-reward profile currently appears skewed to the downside because earnings expectations face pressure and visibility on margin recovery remains uncertain until monetization improves.

📉 Analysts at Zacks Investment Research have assigned Duolingo a Zacks Rank #4, which indicates a "Sell" rating based on their stock-rating system.

🚀 Despite the sell recommendation, research director Sheraz Mian identifies Duolingo as his single best pick to potentially double in value due to its target audience and recent pullback.

📈 The company targets millennial and Gen Z audiences and generated nearly $1 billion in revenue last quarter alone, suggesting strong underlying demand.

💡 All of this data comes from an analysis originally published on Zacks Investment Research (zacks.com) which focuses on independent investment research tools like the Zacks Rank.

📅 The article notes that while all elite picks are not guaranteed winners, Duolingo is presented as a potential explosive upside similar to Nano-X Imaging which rose +129.6% in less than 9 months.

Bullish Signals
  • DUOL total revenue reached $1.0 billion in 2025, representing a strong 39% year-over-year growth from $748.0 million in 2024.
  • Subscription revenue contributed $873.4 million, accounting for approximately 84% of total revenue, demonstrating the strength of their recurring business model.
  • The company has clear multi-year levers tied to product depth, new subjects, and artificial intelligence-driven personalization that support long-term value creation.
  • Management is expanding access to AI-powered learning and running pricing tests, which can increase user engagement and conversion rates over time.
  • Duolingo continues to trade with a significant market presence, generating nearly $1 billion in revenue in the most recent quarter alone.
  • The company targets high-growth millennial and Gen Z audiences, providing a strong demographic tailwind for future expansion.
Risk Factors
  • Duolingo's shares have plummeted 79% over the past year and 12.5% in the last three months, significantly underperforming while the S&P 500 rose during the same periods.
  • Management is prioritizing user growth over immediate monetization through 2026, a strategy likely to compress margins before benefits materialize in financial results.
  • The rollout of artificial intelligence-powered learning will increase inference costs and is expected to lower gross margins specifically in 2026.
  • Operating leverage is under pressure as research and development, along with sales and marketing expenses, are projected to grow faster than revenue during the investment year.
  • Despite the recent drop, Duolingo trades at a premium multiple of 34.62 times forward earnings compared to the industry average of 23.01 times.
  • The five-year median forward price-to-earnings multiple is cited as 107.32 times, indicating the stock historically carries a high valuation that leaves limited room for execution errors.
  • Duolingo faces significant competitive threats from peers like Coursera and Chegg, which possess structural enterprise demand or large academic installed bases that provide diversification beyond direct-to-consumer subscriptions.
  • The risk-reward profile appears skewed to the downside due to earnings expectations facing pressure and uncertain visibility on operating leverage recovery.
  • Zacks Investment Research currently assigns Duolingo a Rank #4 (Sell), citing the near-term setup as increasingly difficult to justify at current levels.
Full Analysis
DUOL stock has declined 79% over the past year and 12.5% in the last three months, outperforming the S&P 500's gains during both periods. Despite this drop, the article argues the risk-reward profile currently leans toward a sell rather than a buy. The core issue is that Duolingo’s long-term growth story involving product depth and AI personalization remains intact, but near-term execution risks are elevated. Management plans to prioritize user growth over monetization through 2026 by broadening access to AI-powered learning and running extensive pricing tests, which will likely compress margins before benefits materialize in the financial statements. Additionally, operating leverage is expected to be pressured as R&D and sales/marketing expenses grow faster than revenue during this investment phase. The valuation remains a significant concern relative to peers. Duolingo trades at 34.62 times forward 12-month earnings compared to an industry multiple of 23.01 times and historically commands a premium median of 107.32 times. This high valuation makes the stock increasingly sensitive to execution missteps, especially when benchmarked against competitors like Coursera (COUR) which benefits from enterprise partnerships and Chegg (CHGG). The revenue mix shows strength with subscriptions accounting for 84% of the total $1.0 billion in 2025 revenue, yet the pressure to convert free users without friction while managing rising AI inference costs creates a difficult short-term outlook. Consequently, until there are clearer signs of monetization and margin recovery, the article concludes that limited room for error combined with moderated growth leaves the stock looking more like a sell. Zacks Investment Research currently assigns DUOL a Rank #4 (Sell), noting that earnings expectations face pressure and visibility on operating leverage remains uncertain.