Should You Buy Duolingo as Growth Slows and Valuation Stays High?

Duolingo, Inc. DUOL offers investors a growing, highly engaged audience and expanding product reach. Yet bookings growth is slowing, operating spending is rising faster than revenues and the shares still command a premium valuation.

The investment case depends on whether user growth and platform expansion can translate into stronger monetization quickly enough to justify that premium.

Duolingo User Growth Strengthens the Long-Term Case

Second-quarter daily active users increased 23% year over year to 58.7 million. Monthly active users rose 10% to 140.6 million and paid subscribers climbed 17% to 12.7 million. Current User Retention Rate also reached a record 84%, giving Duolingo a larger and stickier base for future monetization.

Duolingo is extending that distribution advantage beyond language learning. Chess had roughly 7 million daily active users by early 2026, while Math and Music each had single-digit millions of daily active users in the second quarter. Those products remain small relative to the core platform but can broaden engagement over time.

Coursera, Inc. COUR is another large online learning platform and recently combined with Udemy, expanding its skills-development offering. Nerdy Inc. NRDY, led by Varsity Tutors, operates a live online learning platform that uses artificial intelligence to personalize instruction.

DUOL Monetization Is Not Keeping Pace With Usage

Second-quarter revenues increased 18.3% year over year to $298.5 million, but total bookings rose only 8% to $289.1 million after increasing 14% in the first quarter. Management has said that new users do not monetize immediately, so stronger engagement may take time to show up fully in revenues.

Research and development expense rose 25% in the quarter and sales and marketing expense increased 35%, both faster than revenues. Net income fell 26%, while adjusted EBITDA declined 2%, showing the near-term cost of prioritizing user growth and product investment.

Duolingo's Premium Valuation Demands Execution

DUOL trades at 44.4X forward 12-month earnings, compared with 22.2X for its Zacks sub-industry. That roughly twofold premium leaves less room for disappointment if bookings remain soft or the payoff from current investments takes longer than expected.

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The Zacks Consensus Estimate for current fiscal-year earnings has declined 5% over the past four weeks. A premium multiple alongside weaker estimate revisions raises the importance of meeting growth and margin targets.

DUOL Cash Flow and Buybacks Add Financial Support

Duolingo ended the second quarter with about $1.3 billion in cash and short-term investments and generated $78.6 million of free cash flow. Management expects more than $375 million of free cash flow for 2026, providing flexibility to keep investing through the current growth transition.

The company repurchased $44.4 million of stock during the quarter. Total repurchases reached $71.9 million through Aug. 1 under its $400 million authorization, offsetting nearly all dilution from 2024 and 2025. That supports per-share value even as operating investment remains elevated.

Duolingo Signals Support a Patient Stance

Duolingo still has an attractive long-term platform story, but the near-term setup is less clear. User engagement is improving and cash generation remains healthy, while bookings growth, spending and valuation create a higher execution bar.

The stock carries a Zacks Rank #3 (Hold), which supports a patient near-term stance rather than a strong buy signal. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

DUOL’s Momentum Score of B is the strongest of its style measures, while the Value Score of C is middling. The Growth Score of D and VGM Score of D are less favorable, leaving the overall style profile mixed.

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This article originally published on Zacks Investment Research (zacks.com).

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