Stocks › DUOL
Duolingo, Inc.
DUOL·Nasdaq·
United States·USD
United States·USD$148.13
+1.03 (+0.70%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
DUOL
Duolingo, Inc. · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
DUOLS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of DUOL by members of U.S. Congress · 4 on record
| Politician | Stock | Type | Filed | Traded | |
|---|---|---|---|---|---|
 Lisa C. McClainHouse · R · MI |
DUOLDuolingo, Inc. · Stock |
Purchase $1,001 - $15,000 |
Sep 12, 2025 | Aug 4, 2025 | Filing ↗ |
| Lisa C. McClainHouse · R · MI |
DUOLDuolingo, Inc. · Stock |
Sale $1,001 - $15,000 |
Sep 12, 2025 | Aug 13, 2025 | Filing ↗ |
| Lisa C. McClainHouse · R · MI |
DUOLDuolingo, Inc. · Stock |
Sale $1,001 - $15,000 |
Aug 13, 2025 | Jun 24, 2025 | Filing ↗ |
| Lisa C. McClainHouse · R · MI |
DUOLDuolingo, Inc. · Stock |
Purchase $1,001 - $15,000 |
Aug 13, 2025 | Jun 17, 2025 | Filing ↗ |
Whale Activity
Position changes in DUOL reported for 2026-06-30 by 11 tracked institutional filers
- Increased2
- New1
- Held0
- Decreased6
- Closed0
- No prior filing2
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 3.9M | $444.8M | decreased |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.7M | $200.8M | increased |
| TWO SIGMA INVESTMENTS, LP | 1.6M | $187.4M | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.6M | $184.4M | decreased |
| Point72 Asset Management, L.P. | 215.1K | $24.7M | new |
| RENAISSANCE TECHNOLOGIES LLC | 211.5K | $24.3M | decreased |
| D. E. Shaw & Co., Inc. | 196.7K | $22.6M | decreased |
| MILLENNIUM MANAGEMENT LLC | 72.0K | $8.3M | decreased |
| Eschler Asset Management LLP | 7,806 | $898K | — |
| CITADEL ADVISORS LLC | 2,607 | $300K | decreased |
| X-Square Capital, LLC | 43.2K | $5K | — |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by DUOL insiders, by quarter · Form 4
Recent Insider Transactions
1,916 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| von Ahn LuisPresident & CEO, Co-Founder · Director | Sale | −900 | $152.29 | $137K | Sep 24, 2026 | Form 4 ↗ |
| von Ahn LuisPresident & CEO, Co-Founder · Director | Sale | −7,024 | $151.42 | $1.1M | Sep 24, 2026 | Form 4 ↗ |
| von Ahn LuisPresident & CEO, Co-Founder · Director | Sale | −38.8K | $150.45 | $5.8M | Sep 24, 2026 | Form 4 ↗ |
| von Ahn LuisPresident & CEO, Co-Founder · Director | Sale | −3,414 | $152.02 | $519K | Sep 22, 2026 | Form 4 ↗ |
| von Ahn LuisPresident & CEO, Co-Founder · Director | Sale | −200 | $150.00 | $30K | Sep 22, 2026 | Form 4 ↗ |
| von Ahn LuisPresident & CEO, Co-Founder · Director | Sale | −4,109 | $151.07 | $621K | Sep 21, 2026 | Form 4 ↗ |
| von Ahn LuisPresident & CEO, Co-Founder · Director | Sale | −33.3K | $150.46 | $5.0M | Sep 21, 2026 | Form 4 ↗ |
| von Ahn LuisPresident & CEO, Co-Founder · Director | Sale | −27.3K | $150.17 | $4.1M | Sep 16, 2026 | Form 4 ↗ |
| von Ahn LuisPresident & CEO, Co-Founder · Director | Sale | −1,020 | $151.54 | $155K | Sep 16, 2026 | Form 4 ↗ |
| Chen Stephen C.General Counsel | Sale | −5,965 | $150.00 | $895K | Sep 14, 2026 | Form 4 ↗ |
| Chen Stephen C.General Counsel | Sale | −2,107 | $147.43 | $311K | Sep 14, 2026 | Form 4 ↗ |
| GORDON WILLIAM BDirector · Director | Sale | −800 | $143.83 | $115K | Sep 8, 2026 | Form 4 ↗ |
| GORDON WILLIAM BDirector · Director | Sale | −3,483 | $145.91 | $508K | Sep 8, 2026 | Form 4 ↗ |
| GORDON WILLIAM BDirector · Director | Sale | −2,742 | $144.59 | $396K | Sep 8, 2026 | Form 4 ↗ |
| GORDON WILLIAM BDirector · Director | Sale | −2,675 | $146.58 | $392K | Sep 8, 2026 | Form 4 ↗ |
| GORDON WILLIAM BDirector · Director | Sale | −200 | $148.68 | $30K | Sep 8, 2026 | Form 4 ↗ |
| GORDON WILLIAM BDirector · Director | Sale | −100 | $151.64 | $15K | Sep 8, 2026 | Form 4 ↗ |
| Glance NatalieChief Engineering Officer | Sale | −502 | $137.01 | $69K | Aug 18, 2026 | Form 4 ↗ |
| Glance NatalieChief Engineering Officer | Sale | −1,037 | $138.19 | $143K | Aug 18, 2026 | Form 4 ↗ |
| Glance NatalieChief Engineering Officer | Sale | −2,751 | $129.13 | $355K | Aug 17, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding DUOL · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF iShares Trust | 1.4M | $158.2M | 0.13% | Jun 30, 2026 |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 1.2M | $139.4M | 0.01% | Jun 30, 2026 |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 876.9K | $100.9M | 0.05% | Jun 30, 2026 |
| VANGUARD U.S. GROWTH FUND VANGUARD WORLD FUND | 864.7K | $96.3M | 0.20% | May 31, 2026 |
| Federated Hermes MDT Mid Cap Growth Fund Federated Hermes Equity Funds | 685.6K | $92.4M | 1.40% | Jul 31, 2026 |
| VANGUARD SMALL-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS | 506.4K | $58.2M | 0.12% | Jun 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 461.7K | $53.1M | 0.05% | Jun 30, 2026 |
| State Street SPDR S&P MidCap 400SM ETF Trust SPDR S&P MIDCAP 400 ETF TRUST | 309.6K | $35.6M | 0.13% | Jun 30, 2026 |
| Fidelity Mid-Cap Stock Fund Fidelity Concord Street Trust | 251.1K | $33.8M | 0.38% | Jul 31, 2026 |
| Invesco S&P MidCap Quality ETF Invesco Exchange-Traded Fund Trust | 235.6K | $25.9M | 0.50% | Apr 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list DUOL's shares (CUSIP 26603R106), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- AQR Capital Management Holdings, LLCSCHEDULE 13G · passive (13G) · 2.3M shares5.8%
Aug 12, 2026 · ↗ - AQR Capital Management, LLCSCHEDULE 13G · passive (13G) · 2.3M shares5.8%
Aug 12, 2026 · ↗ - Vanguard Capital ManagementSCHEDULE 13G · passive (13G) · 2.1M shares5.1%
Jul 31, 2026 · ↗ - Capital World InvestorsSCHEDULE 13G/A · passive (13G) · 0 shares0.0%
May 14, 2026 · ↗ - Abigail P. JohnsonSCHEDULE 13G/A · passive (13G) · 1.1M shares2.7%
May 6, 2026 · ↗ - FMR LLCSCHEDULE 13G/A · passive (13G) · 1.1M shares2.7%
May 6, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming Duolingo, Inc. as client
No lobbying filings found naming Duolingo, Inc. as the client.
Government Contracts
Federal awards to Duolingo, Inc. · USAspending
No federal contract awards found for Duolingo, Inc..
U.S. Patents
Recent USPTO applications naming Duolingo, Inc.
No USPTO patent applications found for Duolingo, Inc..
Annual Financials
From DUOL's 10-K filings · XBRL
No annual XBRL figures on record for DUOL. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in DUOL's price history.
Material Events (8-K)
Corporate events filed with the SEC
- 8-K · Items 7.01Reg FD disclosureAug 19, 2026
EDGAR ↗ - 8-K · Items 5.02, 7.01, 9.01Officer / director change · Reg FD disclosureAug 10, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsAug 5, 2026
EDGAR ↗ - 8-K · Items 5.07Shareholder voteJun 5, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsMay 4, 2026
EDGAR ↗
About Duolingo, Inc.
From SEC EDGAR company records
Industry (SIC 7372)Services-Prepackaged Software
SectorTechnology
HeadquartersPITTSBURGH, PA
IncorporatedDE
SEC CIK0001562088 ↗