Duolingo (BSP:DUOL34) Beta: N/A (As of Aug. 10, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

BSP:DUOL34 Duolingo Inc BSP:DUOL34
45 GF Score
Price R$20.80
GF Value R$65.12
Valuation Significantly Undervalued
! 5 Warning Signs
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What is Duolingo Beta?

Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. As of today (2026-08-10), Duolingo's Beta is Not available.

Duolingo  (BSP:DUOL34) Beta Explanation

Beta is a measure of the volatility, or systematic risk, of a security or a portfolio in comparison to the market as a whole. We usually compare beta to 1. A beta of 1 indicates that the security's price will move with the market. A beta of less than 1 means that the security will be less volatile than the market. A beta of greater than 1 indicates that the security's price will be more volatile than the market.

Beta is primarily used in the Capital Asset Pricing Model (CAPM) to calculate the Cost of Equity, which can be used in the calculation of WACC %. The formula of Cost of Equity is:
Cost of Equity = Risk-Free Rate of Return + Beta of Asset * (Expected Return of the Market - Risk-Free Rate of Return)

Duolingo Beta Related Terms

Duolingo Beta Historical Data

* Premium members only.

The historical data trend for Duolingo's Beta can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Duolingo Beta Chart

Duolingo Annual Data
Trend Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Beta
Get a 7-Day Free Trial 0.00 0.00 0.00 0.00 0.00

Duolingo Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Beta Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00
BSP:DUOL34
45GF Score
Duolingo Inc BSP:DUOL34
Beta is just one metric. See GF Score™, valuation, warning signs, and more.
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Duolingo Beta Calculation

Beta is the sensitivity of the expected excess asset returns to the expected excess market returns. A stock's beta can be calculated by dividing the product of the covariance of the individual stock's returns and the market's returns by the variance of the market's returns over a specified period. Basically, GuruFocus uses the returns calculated over three-year period.

Is Duolingo (BSP:DUOL34) Overvalued in 2026?

Based on GuruFocus' analysis, Duolingo stock appears to be undervalued. The current stock price of R$20.80 is trading 68.1% below its estimated GF Value™ of R$65.12. GuruFocus considers Duolingo to be Significantly Undervalued.

Key valuation signals for BSP:DUOL34:

  • Beta: N/A
  • GF Value™: R$65.12 vs. price of R$20.80 (68.1% below fair value)
  • GF Score™: 45/100 with 5 warning signs

No single metric tells the full story. See the BSP:DUOL34 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Duolingo Business Description

Other Exchanges DUOL:USADUOL:Mexico
Address 5900 Penn Avenue, Pittsburgh, PA, USA, 15206
Duolingo Inc is a technology company that develops a mobile learning platform to learn languages. Its products are powered by sophisticated data analytics and artificial intelligence and delivered with class art, animation, and design to make it easier for learners to stay motivated, master new material, and achieve their learning goals. Its solutions include the Duolingo Language Learning App, Super Duolingo, Duolingo English Test: AI-Driven Language Assessment, Duolingo For Schools, Duolingo ABC, and Duolingo Math. It has four predominant sources of revenue: time-based subscriptions, in-app advertising placement by third parties, the Duolingo English Test, and In-App purchases. Geographically, the company generates revenue from its customers in the United States and other markets.
45GF Score

Get the complete analysis for BSP:DUOL34

Beta is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

R$20.80
Price
R$65.12
GF Value