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Duolingo Shares Jump 32% on Strong AI-Driven Growth and Upgraded Forecast

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Duolingo shares surged about 32% on Thursday after the language-learning platform raised its annual forecast, boosting investor confidence in its ability to accelerate user growth through AI-powered features, social engagement tools, and improved monetization strategies.

The company has been experimenting with app features and subscription models to enhance retention and attract new users. Duolingo runs targeted experiments to decide which subscription options are shown to which users and when, aiming to maximize long-term value rather than pushing any single plan.

In the second quarter, average revenue per user rose 6%, largely due to more users switching to the higher-priced Max tier, which includes AI-powered video calls for conversational practice, and the $12.99-per-month Super plan. Analysts at Raymond James noted potential upside in monetization, pricing, paid conversion rates, and margins, despite a cautious stance on near-term user growth.

Gross margin fell 100 basis points in the quarter, a smaller decline than the 300 basis points Duolingo had anticipated, thanks to lower AI costs and stronger ad performance. “AI costs that power Max were lower than expected, as the cost of calling AI tools has dropped significantly,” CFO Matt Skarupa told Reuters.

The company posted adjusted earnings per share of 91 cents, beating analyst expectations of 58 cents, prompting an upward revision in earnings forecasts. If current levels hold, Duolingo’s market valuation could increase by roughly $5 billion from its prior $15.62 billion.

Even after the rally, Duolingo trades at a forward price-to-earnings multiple of 85.21 — higher than peers such as Uber (26.54) and DoorDash (79.38).

Airbnb Shares Drop Over 7% Amid Slower Growth Outlook and Travel Demand Concerns

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Airbnb’s shares fell more than 7% on Thursday after the company projected slower growth in the second half of the year, raising concerns about a potential travel demand slowdown. This came as a disappointment to investors who had anticipated a rebound, especially after positive forecasts from major travel firms.

The company cited the impact of tariffs on its third-quarter margins, noting that the tariff shock in April led to a significant drop in bookings. The outlook contrasts with recent optimism in the travel sector, where United Airlines and Hilton Worldwide both predicted rising bookings and strong year-end revenue, and Booking Holdings reported robust quarterly results.

Airbnb said its weaker forecast was partly due to tough comparisons with last year, when a surge in bookings from Asia and Latin America boosted earnings. The platform expects growth in night bookings to slow year-over-year in the fourth quarter, with its implied take rate — revenue relative to gross bookings — likely staying flat in Q3.

So far in 2025, Airbnb and Expedia shares have each slipped 0.6%, while Booking Holdings has gained 11.4%. Valuation-wise, Airbnb trades at a forward price-to-earnings multiple of 28.41, compared to Booking’s 22.69 and Expedia’s 11.57.

Nvidia briefly hits $4 trillion market value, cementing AI leadership

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Nvidia (NVDA.O) briefly reached a market capitalization of $4 trillion on Wednesday, becoming the first company ever to hit this milestone and reaffirming its dominance in the artificial intelligence (AI) sector. Shares surged as much as 2.8% to an all-time high of $164.42 before closing up 1.8%, giving Nvidia a market value of approximately $3.97 trillion.

This milestone reflects Wall Street’s strong confidence in Nvidia’s leading role in powering AI innovation, with its high-performance chips crucial to advancements in the technology. Robert Pavlik, senior portfolio manager at Dakota Wealth, remarked that the rally “highlights the fact that companies are shifting their asset spend in the direction of AI,” which he sees as the future of technology.

Nvidia’s stock has seen a remarkable recovery after a slow start in 2025, which was rattled by competition from Chinese AI models like DeepSeek. The company reached a $1 trillion valuation in June 2023 and has since nearly quadrupled in value within about a year—outpacing other tech giants like Apple and Microsoft, the only other U.S. firms with market caps above $3 trillion.

Microsoft, the second most valuable U.S. company, closed Wednesday at $503.51 per share with a $3.74 trillion market cap. Nvidia’s rally has lifted it by approximately 74% from its April lows, coinciding with renewed optimism about U.S. trade relations.

Currently, Nvidia represents 7.3% of the S&P 500 index, slightly more than Apple’s 7% and Microsoft’s 6%. Its valuation now surpasses the combined stock market value of Canada and Mexico, as well as all publicly listed companies in the UK.

Despite its high valuation, Nvidia’s 12-month forward price-to-earnings ratio stands at 32, below its three-year average of 37.

While Nvidia’s GPUs dominate AI workloads, rivals such as Advanced Micro Devices (AMD) and others are seeking to chip away at its market share by offering more affordable alternatives. Meanwhile, major customers like Amazon, Microsoft, and Alphabet face investor pressure to moderate their AI spending.

Nvidia posted $44.1 billion in revenue for the first quarter of 2025, a 69% increase year-on-year. For the second quarter, the company projects revenue around $45 billion, plus or minus 2%, with earnings due on August 27.

Year-to-date, Nvidia’s stock is up about 22%, outperforming the Philadelphia Semiconductor Index’s roughly 15% gain.