DUOL
Duolingo, Inc.Technology · $6.7B market cap
Verdict
Share price
$144.27
close of Oct 3, 2026
Fair value
$220.99
Sticker Price
Payback Price
$88.40
buy price
DUOL is Undervalued: at $144.27 it trades 35% below its fair value of $220.99. Its buy price (Payback Price) is $88.40, 39% below today's price. Business quality is strong: 4 of 5 key numbers clear the 10% bar.
How we valued it
Buffett Normalized. A profitable, growing business, so we project its earnings 10 years ahead and work out what that is worth today.
Business quality
4 of 5 clear the 10% bar. What are the Big Five?
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None of the investors we track holds DUOL right now. In Q1 2026, 1 sold out. Who we track
Moves in Q1 2026
Sold out: Henry Ellenbogen
Insider activity
Since Jun 17, 2026: no open-market purchases, 11 sales worth $2.3M and 7 other filings (stock awards, tax withholding and similar). Why purchases matter
Sales
GORDON WILLIAM B
director · 2026-09-08
Sold
$15K
GORDON WILLIAM B
director · 2026-09-08
Sold
$30K
GORDON WILLIAM B
director · 2026-09-08
Sold
$392K
GORDON WILLIAM B
director · 2026-09-08
Sold
$508K
GORDON WILLIAM B
director · 2026-09-08
Sold
$396K
Show all 11 salesShow fewer
GORDON WILLIAM B
director · 2026-09-08
Sold
$115K
Glance Natalie
Chief Engineering Officer · 2026-08-18
Sold
$143K
Glance Natalie
Chief Engineering Officer · 2026-08-18
Sold
$69K
Chen Stephen C.
General Counsel · 2026-08-17
Sold
$132K
Meese Robert
Chief Business Officer · 2026-08-17
Sold
$175K
Glance Natalie
Chief Engineering Officer · 2026-08-17
Sold
$355K
Other filings
KRAWCHECK SALLIE
director · 2026-08-10
Award
1,312 shares
KRAWCHECK SALLIE
director · 2026-08-10
Award
3,280 shares
Lilly III John Osborne
director · 2026-07-10
Award
$15K
Schlosser Mario
director · 2026-07-10
Award
$17K
Bohutinsky Amy
director · 2026-07-10
Award
$16K
Show all 7 other filingsShow fewer
Shelton James H
director · 2026-07-10
Award
$15K
Chen Stephen C.
General Counsel · 2026-06-17
Option exercise
$836
About Duolingo, Inc.
Duolingo, Inc. builds and operates an online platform and a mobile application dedicated to language learning, catering to audiences in both the United States and China. The company's comprehensive curriculum spans 40 diverse languages, featuring prominent options such as Spanish, English, French, Japanese, German, Italian, Chinese, and Portuguese, among others. Furthermore, it offers a digital examination for…
Software - Application
Fair value and Payback Price are estimates from the company's reported financials, not investment advice. Prices as of the close of Oct 3, 2026. How the Payback Price works