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Duolingo Inc (DUOL) Fair Value & Analysis

Technology · US · Market cap $5.8B · ISIN US26603R1068

What is Duolingo Inc really worth?

DI Duolingo Inc logo Duolingo Inc DUOL · US
Price$158.82
Fair Value$86.61
Upside−45.5%
Quality72/100

A solid business, but trading 83% above our fair value of $86.61.

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Strengths

Healthy Growth (revenue 5y +45.0 %/yr)
Highly profitable · 38.4% net margin
generates free cash flow
Wide moat 76/100

Risks

!Mixed vs. peers (7/12)
Evidence: High Range $70.81 – $104.62

Fair value as of: Sep 1, 2026

From 24 valuation models · updated 4 days ago

Share price +15.3% over the past month.

What runs behind every stock

69 individual criteria per stock, every one traceable See the method →

What matters now

  • A high-quality business (quality 72/100), yet the market already pays well above fair value. Quality at a full price, with little margin of safety.
  • The price sits above even our optimistic bull case ($104.62). The favourable scenario is already priced in.

Price vs Fair Value (5 years)

$540.68 $63.00 Fair Value $86.61 Jul 2021 Sep 2026

White line = price, green steps = our fair value per fiscal year, dashed = 300-day average. As of Sep 1, 2026.

How to read this chart

60‑month range $63.00 – $540.68 · fair‑value band $70.81 – $104.62 · the $158.82 price screens above the $86.61 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). Dashed = 300-day average. As of Sep 1, 2026.

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Analysis

Duolingo Inc (DUOL) currently trades at $158.82, while our model-based Fair Value estimate is $86.61, implying the stock looks roughly 83.4% overvalued today. The Quality Score stands at 72/100 (solid quality), in the Technology sector. Bull case: the Growth Earnings group reads highest at a median of $478.10 per share, and 12 of the 24 models we run sit above the $158.82 price. Bear case: the Asset-Based group reads lowest at $22.43, and 12 of the 24 models stay below the price. Evidence for this calculation is high.

Over the trailing twelve months, Duolingo Inc generated revenue of $1.1B at a net margin of 38.4%. Revenue grew 26.5% year over year. It earns a return on equity of 37.0%. The balance sheet holds a net cash position of $943M. Fundamentals as of Sep 1, 2026

Our scenario range runs from $70.81 (bear case) to $104.62 (bull case); at $158.82, the current price sits above that range. Bear and bull are the same models run on conservative and optimistic assumptions (margins, growth, valuation multiples), so a plausible valuation range, not a price target. The share trades about 69% below its 52-week high and 81% above its 52-week low, currently below its 200-day average. For context, the median of 10 Technology peers we cover trades at −38% fair-value upside, at −45%, DUOL screens richer than that median.

Fair Value models

This estimate rests on fiscal year 2025 figures, and about 8 months have passed since. In that time the company retained roughly $5.91 per share, which is 6.8 % of the fair value. The fair value deliberately does not add this in: the models value reported figures, not a projection.

Each model estimates fair value its own way; the Fair Value above is the evidence-weighted, family-balanced blend. Evidence (0–100) measures how completely this model’s inputs are available: well-fed models carry more weight in the blend. The spread across models is intentional, each one stresses a different value driver; dividend models, for instance, come out structurally low when payout is small. Every input is real reported data, nothing guessed.

Model Bear Bear = the cautious scenario: the same model computed with conservative anchors (lower growth, margins and valuation multiples). Together with Bull it frames a plausible valuation range, not a price target.BaseBull Bull = the optimistic scenario: the same model computed with favourable anchors (higher growth, margins and valuation multiples). Together with Bear it frames a plausible valuation range, not a price target. Evidence
Highest evidence
FCF DCF $171.91 $250.78 $496.68 72
Growth DCF $163.01 $287.00 $486.76 71
5Y EBITDA Exit $93.24 $126.90 $192.23 70
All 24 models by family
DCF Models
FCF DCF $171.91 $250.78 $496.68 72
Owner Earnings $177.19 $361.37 $733.80 66
5Y Revenue Exit $84.67 $109.59 $160.24 68
5Y EBITDA Exit $93.24 $126.90 $192.23 70
5Y P/E Exit $192.91 $404.90 $694.75 63
10Y Revenue Exit $110.93 $170.72 $195.75 64
10Y EBITDA Exit $117.98 $188.75 $298.67 62
10Y P/E Exit $189.08 $398.45 $744.64 56
Earnings-Based
Graham-Dodd $69.98 $488.00 $684.84 61
Lynch FV $252.12 $360.17 $468.22 59
PEG = 1.0 $252.12 $360.17 $468.22 55
EPV $54.48 $59.01 $62.92 70
Multiples
P/E Multiple $169.80 $226.39 $282.99 63
P/S Multiple $23.21 $30.94 $38.68 58
P/B Multiple $100.43 $133.91 $167.38 55
EV/EBIT $73.14 $88.94 $104.73 63
EV/EBITDA $60.57 $72.17 $83.77 64
EV/Revenue $47.42 $56.70 $65.98 52
Asset-Based
NCAV (Graham) $16.74 $22.43 $33.48 51
Growth DCF
Growth DCF $163.01 $287.00 $486.76 71
Rev-Margin DCF $89.70 $121.95 $190.83 67
Economic Profit
Residual Income $71.17 $98.93 $769.81 56
ROIC Compounder $62.54 $80.57 $103.70 68
Growth Earnings
Growth-Adj P/E $334.67 $478.10 $621.53 65

Widest divergence: Growth Earnings ($478.10) versus Asset-Based ($22.43). Highest evidence: FCF DCF (72).

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Key figures & financial health

P/E ratio 14.3 as of Jul 12, 2026
P/S ratio 5.69 P/E × margin
EPS (TTM) $8.75 price ÷ EPS = P/E 14.3
Net margin 39.9% FY2025
Return on equity 37.0% TTM
Return on assets (EBIT) 2.2% avg 5y
More key figures
Profitability
Operating margin 15.4% TTM
Growth
Revenue (TTM) $1.1B TTM
Revenue growth (YoY) +26.5% 3y avg +41.1%
EPS growth (YoY) +23.6%
Balance sheet & cash flow
Free cash flow $370M FY2025
Net cash $943M FY2025

Figures from reported company fundamentals · as of Sep 1, 2026. TTM = trailing twelve months.

Quality Score breakdown

Overall quality 72/100

Of which business quality 72 · Market factors (momentum, volatility) 43

Profitability 80
Margins and returns on capital today
Quality Growth 74
Are margins and returns improving?
Cashflow 82
Earnings quality: real cash, not paper profit
Fin. Strength 100
Balance sheet, leverage, solvency risk
Investment 33
Disciplined investing over empire-building
Low Volatility 35
Calm price path (market factor)
Momentum 67
Price trend over the last 3–12 months (market factor)
52W Momentum 9
Distance to the 52-week high (market factor)
Net Issuance 32
Buybacks instead of dilution

Non-valuation factor families (profitability, growth, cashflow, financial strength, momentum …), each academically grounded. Valuation itself sits in the Fair Value and is deliberately excluded here to avoid double-counting.

All values are scores from 0 to 100 (100 = best against fixed, research-based bands), not percentages. The three market factors (momentum, 52-week proximity, low volatility) are displayed but carry zero weight in the headline number: market sentiment is not a business property.

About the company

Duolingo, Inc. operates as a mobile learning platform in the United States, the United Kingdom, and internationally. The company offers 250 language courses, including Spanish, English, French, German, Italian, Portuguese, Japanese, and Chinese through its Duolingo app. It also provides a digital English language proficiency assessment exam.

Full company description

Duolingo, Inc. operates as a mobile learning platform in the United States, the United Kingdom, and internationally. The company offers 250 language courses, including Spanish, English, French, German, Italian, Portuguese, Japanese, and Chinese through its Duolingo app. It also provides a digital English language proficiency assessment exam. The company was incorporated in 2011 and is headquartered in Pittsburgh, Pennsylvania.

Company description, as reported by the company or data provider.

Revenue & earnings trend

FY2021 – FY2025 · reported fiscal years

Duolingo Inc reported revenue of $1.0B in FY2025 versus $251M in FY2021, a compound +42.6%/yr. Reported net income was $414M in FY2025.

Growth Quality 100/100
Revenue growth appears healthy and is supported by profitability and cash-flow quality.
Latest Revenue (FY 2025)
$1.0B
Latest YoY
+38.7%
Avg. revenue growth/yr (3Y) Measures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump.
+41.1%
Avg. revenue growth/yr (5Y) Measures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump.
+45.0%
Avg. revenue growth/yr (6Y) Measures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump.
+56.4%
Value creation/yr We only publish this rate when it is defensible. Reason: rate outside our plausibility band
not computed
Revenue +42.6%/yr
FY21 $251M
FY22 $369M
FY23 $531M
FY24 $748M
FY25 $1.0B
Net income
FY21 −$60.1M
FY22 −$59.6M
FY23 $16.1M
FY24 $88.6M
FY25 $414M

DUOL screens 83% overvalued. Compare with SAP SE →

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Cite: Fair Value Calculator (2026). "Duolingo Inc Fair Value". https://www.fairvalue-calculator.com/stock/DUOL

Earlier news

External third-party headlines (Yahoo Finance, Reuters and others), not an editorial selection.

Peer Group

Software - Application · 691 stocks

How this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.

Quality Score 72 · Top 25%
Fair Value upside −46% · Below median
Return on equity (TTM) 37% · Top 25%
Return on assets 6% · Top 25%
Net margin (TTM) 38% · Top 25%
Operating margin (TTM) 15% · Top 25%
Revenue growth 27% · Top 25%

Valuation Multiples vs Software - Application median · lower = cheaper

P/E (TTM) 14.3× · Cheaper than 75% of peers
P/B 4.32× · Pricier than median
P/S (TTM) 5.29× · Pricier than 75% of peers
P/FCF 15.7× · Pricier than median
EV/EBITDA 26.9× · Pricier than 75% of peers

Strength profile in five axes (Snowflake)

Five quick dimensions, each 0 to 100: VALUE (fair-value potential), FUTURE (revenue growth), PAST (return on equity), HEALTH (low debt), DIVIDEND (yield). Green = this stock, grey = typical sector peer.

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE0 · sector 0
FUTURE100 · sector 37
PAST100 · sector 12
HEALTH0 · sector 98
DIVIDEND0 · sector 28

VALUE 0: the price sits above our fair-value range.

Insider activity: 66/100

Values & ESG

Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.

None of the checked exposures detected

Similar stocks

10 more Software - Application stocks, each showing price versus our Fair Value estimate (as of Sep 1, 2026).

Stock Price Fair Value vs Fair Value
SAP SE SAP €191.32 €169.59 −11%
Shopify Inc SHOP C$209.78 C$28.76 −86%
Uber Technologies, Inc UBER $78.82 $43.66 −45%
Salesforce, Inc CRM $252.05 $249.28 −1%
ServiceNow, Inc NOW $138.43 $43.73 −68%
Cadence Design Systems, Inc CDNS $340.39 $112.57 −67%
Snowflake Inc SNOW $329.11 $42.27 −87%
Adobe Inc ADBE $289.15 $454.04 +57%
Automatic Data Processing, Inc ADP $284.68 $177.51 −38%
Intuit Inc INTU $348.00 $363.46 +4%

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Frequently asked questions

Is Duolingo Inc (DUOL) overvalued or undervalued?
As of Sep 1, 2026, our model estimates a fair value of $86.61 versus a price of $158.82, about −45% upside (overvalued).
What is the fair value of DUOL?
Our model-based fair value for Duolingo Inc is $86.61 (as of Sep 1, 2026), built from audited fundamentals. The current price: $158.82.
What is the quality score of DUOL?
Duolingo Inc has a Quality Score of 72/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the revenue of Duolingo Inc (DUOL)?
Duolingo Inc reported trailing-twelve-month revenue of about $1.1B (latest available figure, as of Sep 1, 2026).
What is the net profit margin of DUOL?
The net profit margin of Duolingo Inc is about 38.4%, meaning it keeps roughly 38.4% of revenue as net income. Based on the latest reported figures.
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