DUOLINGO INC DUOL
CL A COM · Common Stock · CUSIP 26603R106 · ISIN US26603R1068
American online platform for language learning
- SectorTechnology
- IndustryServices-Prepackaged Software
- HeadquartersPittsburgh, PA
- Websiteen.duolingo.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($26.9m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $409.84. Options: 27 managers hold calls ($257.2m notional), 33 hold puts ($426.4m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 168 |
| Q4 2022 | 155 |
| Q1 2023 | 196 |
| Q2 2023 | 238 |
| Q3 2023 | 244 |
| Q4 2023 | 320 |
| Q1 2024 | 337 |
| Q2 2024 | 357 |
| Q3 2024 | 390 |
| Q4 2024 | 459 |
| Q1 2025 | 474 |
| Q2 2025 | 586 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 134 | 124 |
| Q4 2023 | 198 | 107 |
| Q1 2024 | 187 | 166 |
| Q2 2024 | 208 | 184 |
| Q3 2024 | 200 | 191 |
| Q4 2024 | 241 | 178 |
| Q1 2025 | 276 | 221 |
| Q2 2025 | 396 | 184 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $258.3m | $260.8m | 1.01 |
| Q4 2024 | $170.2m | $188.7m | 1.11 |
| Q1 2025 | $176.0m | $181.3m | 1.03 |
| Q2 2025 | $257.2m | $426.4m | 1.66 |
Biggest buyers
| Capital World Investors | Added | +937.0k |
| BlackRock, Inc. | Added | +624.5k |
| TWO SIGMA ADVISERS, LP | Added | +577.8k |
| TWO SIGMA INVESTMENTS, LP | Added | +562.7k |
| Qube Research & Technologies Ltd | New | +496.2k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +318.1k |
| MILLENNIUM MANAGEMENT LLC | Added | +259.4k |
| AQR CAPITAL MANAGEMENT LLC | Added | +213.5k |
| Man Group plc | Added | +150.7k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Added | +147.5k |
Biggest sellers
| Dragoneer Investment Group, LLC | Reduced | -883.4k |
| FMR LLC | Reduced | -794.6k |
| Durable Capital Partners LP | Reduced | -620.9k |
| Invesco Ltd. | Reduced | -568.7k |
| MARSHALL WACE, LLP | Sold out | -423.2k |
| Whale Rock Capital Management LLC | Reduced | -418.3k |
| BAILLIE GIFFORD & CO | Reduced | -278.9k |
| T. Rowe Price Investment Management, Inc. | Reduced | -165.8k |
| Bank of New York Mellon Corp | Reduced | -148.0k |
| 1832 Asset Management L.P. | Sold out | -137.2k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $49.2m120.1k shares |
| IMC-Chicago, LLC | Added | $31.7m77.2k shares |
| CITADEL ADVISORS LLC | Reduced | $27.1m66.0k shares |
| D. E. Shaw & Co., Inc. | Added | $27.0m65.9k shares |
| WOLVERINE TRADING, LLC | New | $24.5m59.5k shares |
| Squarepoint Ops LLC | Added | $21.6m52.7k shares |
| Cubist Systematic Strategies, LLC | Added | $19.8m48.4k shares |
| JANE STREET GROUP, LLC | Added | $13.9m34.0k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $9.0m22.0k shares |
| PEAK6 LLC | Added | $7.5m18.2k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $124.6m304.0k shares |
| CITADEL ADVISORS LLC | Added | $60.2m146.9k shares |
| IMC-Chicago, LLC | Added | $39.1m95.3k shares |
| Twin Tree Management, LP | Reduced | $36.2m88.3k shares |
| JANE STREET GROUP, LLC | Added | $32.8m80.0k shares |
| PEAK6 LLC | Added | $30.8m75.0k shares |
| WOLVERINE TRADING, LLC | New | $21.8m53.1k shares |
| Squarepoint Ops LLC | Added | $19.9m48.5k shares |
| SIMPLEX TRADING, LLC | Added | $10.4m25.3k shares |
| MONIMUS CAPITAL MANAGEMENT, LP | New | $8.2m20.0k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BAILLIE GIFFORD & CO 13G · institution -1.1 pts · filed 2026-10-20 | 11.3% |
| von Ahn Luis 13G · exempt (held before listing) filed 2026-08-12 | 8.2% |
| Hacker Severin 13G · exempt (held before listing) filed 2025-04-17 | 7.6% |
| AQR CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-08-12 | 5.8% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 | 5.1% |
Fell to 5% or below in the last year: Capital World Investors (0.0%, 2026-05-14), FMR LLC (2.7%, 2026-05-06), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 5 | $8.0m | $7.1m |
| Q4 2023 | 0 | — | 6 | $19.3m | $16.6m |
| Q1 2024 | 0 | — | 8 | $42.5m | $42.2m |
| Q2 2024 | 0 | — | 7 | $20.5m | $20.5m |
| Q3 2024 | 0 | — | 5 | $25.1m | $23.3m |
| Q4 2024 | 0 | — | 6 | $182.7m | $179.9m |
| Q1 2025 | 0 | — | 8 | $49.8m | $46.6m |
| Q2 2025 | 0 | — | 7 | $46.0m | $36.3m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-06-20 | Hacker Severin Chief Tech Officer, Co-Founder, director | Sold | $4.7m10.0k shares |
| 2025-06-13 | Shelton James H Director | Sold plan | $426.8k895 shares |
| 2025-06-05 | Hacker Severin Chief Tech Officer, Co-Founder, director | Sold plan | $5.3m10.0k shares |
| 2025-05-19 | Hacker Severin Chief Tech Officer, Co-Founder, director | Sold plan | $5.2m10.0k shares |
| 2025-05-16 | Skaruppa Matthew Chief Financial Officer | Sold plan | $1.9m3.6k shares |
| 2025-05-16 | Glance Natalie Chief Engineering Officer | Sold plan | $1.7m3.3k shares |
| 2025-05-16 | Chen Stephen C. General Counsel | Sold plan | $1.4m2.6k shares |
| 2025-05-15 | Skaruppa Matthew Chief Financial Officer | Sold | $1.8m3.3k shares |
| 2025-05-15 | Glance Natalie Chief Engineering Officer | Sold | $1.6m3.0k shares |
| 2025-05-15 | Meese Robert Chief Business Officer | Sold | $869.3k1.6k shares |
| 2025-05-15 | Chen Stephen C. General Counsel | Sold | $668.4k1.3k shares |
| 2025-05-05 | Hacker Severin Chief Tech Officer, Co-Founder, director | Sold plan | $5.0m10.0k shares |
| 2025-04-29 | Meese Robert Chief Business Officer | Sold plan | $2.0m5.0k shares |
| 2025-04-23 | Meese Robert Chief Business Officer | Sold plan | $3.7m10.0k shares |
| 2025-04-21 | Hacker Severin Chief Tech Officer, Co-Founder, director | Sold plan | $3.1m10.0k shares |
| 2025-04-15 | von Ahn Luis President & CEO, Co-Founder, director | Sold plan | $2.6m8.0k shares |
| 2025-04-07 | Hacker Severin Chief Tech Officer, Co-Founder, director | Sold plan | $2.9m10.0k shares |
| 2025-04-01 | Glance Natalie Chief Engineering Officer | Sold plan | $1.1m3.5k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.03% of their portfolio | 4.2m $1.7bn | Added +624.5k |
| VANGUARD GROUP INC 0.02% of their portfolio | 3.6m $1.5bn | Added +116.1k |
| FMR LLC 0.06% of their portfolio | 2.8m $1.1bn | Reduced -794.6k |
| Capital World Investors 0.14% of their portfolio | 2.3m $940.1m | Added +937.0k |
| BAILLIE GIFFORD & CO 0.67% of their portfolio | 2.2m $901.6m | Reduced -278.9k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.06% of their portfolio | 1.3m $548.6m | Added +147.5k |
| STATE STREET CORP 0.02% of their portfolio | 1.2m $477.4m | Added +6.1k |
| Durable Capital Partners LP 3.33% of their portfolio | 1.1m $440.1m | Reduced -620.9k |
| RENAISSANCE TECHNOLOGIES LLC 0.45% of their portfolio | 833.8k $341.9m | Added +318.1k |
| T. Rowe Price Investment Management, Inc. 0.21% of their portfolio | 825.1k $338.3m | Reduced -165.8k |
| Invesco Ltd. 0.05% of their portfolio | 777.6k $318.8m | Reduced -568.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 760.0k $311.9m | Added +23.4k |
| TWO SIGMA ADVISERS, LP 0.63% of their portfolio | 747.6k $306.5m | Added +577.8k |
| GILDER GAGNON HOWE & CO LLC 2.58% of their portfolio | 592.7k $243.0m | Reduced -17.9k |
| TWO SIGMA INVESTMENTS, LP 0.42% of their portfolio | 572.8k $234.9m | Added +562.7k |
| Qube Research & Technologies Ltd 0.28% of their portfolio | 496.2k $203.4m | New |
| Whale Rock Capital Management LLC 2.78% of their portfolio | 488.8k $200.4m | Reduced -418.3k |
| NORGES BANK 0.02% of their portfolio | 470.6k $193.0m | Reduced -2.2k |
| Foxhaven Asset Management, LP 4.22% of their portfolio | 426.1k $174.7m | Reduced -71.6k |
| AQR CAPITAL MANAGEMENT LLC 0.14% of their portfolio | 415.2k $170.2m | Added +213.5k |
| Dragoneer Investment Group, LLC 3.12% of their portfolio | 372.4k $152.7m | Reduced -883.4k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.03% of their portfolio | 359.1k $147.2m | Added +16.6k |
| FEDERATED HERMES, INC. 0.26% of their portfolio | 340.4k $139.6m | Added +89.1k |
| AMERICAN CENTURY COMPANIES INC 0.07% of their portfolio | 309.7k $127.0m | Reduced -112.0k |
| NORTHERN TRUST CORP 0.02% of their portfolio | 306.8k $125.8m | Added +11.4k |
| Carnegie Mellon University 78.19% of their portfolio | 294.8k $120.9m | Reduced -15.0k |
| MORGAN STANLEY 0.01% of their portfolio | 285.7k $117.1m | Added +48.0k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 283.5k $116.2m | Reduced -148.0k |
| MILLENNIUM MANAGEMENT LLC 0.10% of their portfolio | 276.1k $113.2m | Added +259.4k |
| ALLIANCEBERNSTEIN L.P. 0.03% of their portfolio | 250.5k $102.7m | Reduced -29.7k |
| GOLDMAN SACHS GROUP INC 0.02% of their portfolio | 234.2k $96.0m | Added +146.7k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 225.2k $92.3m | Reduced -28.8k |
| FRANKLIN RESOURCES INC 0.02% of their portfolio | 218.0k $89.4m | Reduced -129.2k |
| Squarepoint Ops LLC 0.19% of their portfolio | 214.6k $88.0m | Added +8.0k |
| Man Group plc 0.19% of their portfolio | 211.3k $86.7m | Added +150.7k |
| FIRST TRUST ADVISORS LP 0.07% of their portfolio | 209.3k $85.8m | Added +105.3k |
| CITIGROUP INC 0.06% of their portfolio | 197.1k $80.8m | Added +111.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.06% of their portfolio | 181.9k $74.6m | Added +77.8k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.27% of their portfolio | 178.5k $73.2m | Reduced -36.1k |
| UBS Group AG 0.01% of their portfolio | 170.3k $69.8m | Added +46.7k |
| AGF MANAGEMENT LTD 0.28% of their portfolio | 151.8k $62.3m | Reduced -1.1k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 149.8k $61.4m | Added +146.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 139.8k $57.3m | Added +17.0k |
| D. E. Shaw & Co., Inc. 0.06% of their portfolio | 139.3k $57.1m | Added +136.9k |
| DEUTSCHE BANK AG\ 0.02% of their portfolio | 128.7k $52.8m | Added +14.5k |
| JANE STREET GROUP, LLC 0.08% of their portfolio | 128.4k $52.7m | New |
| Artisan Partners Limited Partnership 0.08% of their portfolio | 126.3k $51.8m | Added +110.7k |
| RHUMBLINE ADVISERS 0.04% of their portfolio | 124.4k $51.0m | Added +18.2k |
| CITADEL ADVISORS LLC 0.04% of their portfolio | 118.2k $48.5m | Added +118.1k |
| Nuveen, LLC 0.01% of their portfolio | 116.9k $47.9m | Reduced -21.4k |
| LORD, ABBETT & CO. LLC 0.15% of their portfolio | 115.9k $47.5m | Reduced -4.6k |
| NEUBERGER BERMAN GROUP LLC 0.04% of their portfolio | 115.5k $47.4m | Added +47.1k |
| Pacer Advisors, Inc. 0.11% of their portfolio | 110.8k $45.4m | Added +26.4k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 110.2k $45.2m | Added +4.0k |
| Steadview Capital Management LLC 6.46% of their portfolio | 109.1k $44.7m | Reduced -18.8k |
| TD Asset Management Inc 0.04% of their portfolio | 105.7k $43.4m | Reduced -1.8k |
| Jump Financial, LLC 0.51% of their portfolio | 101.9k $41.8m | Reduced -2.8k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 94.8k $38.9m | Reduced -432 |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 94.1k $38.6m | Reduced -30.0k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.03% of their portfolio | 90.1k $36.9m | New |
| PRINCIPAL FINANCIAL GROUP INC 0.02% of their portfolio | 89.3k $36.6m | Added +1.5k |
| PEREGRINE CAPITAL MANAGEMENT LLC 1.09% of their portfolio | 88.0k $36.1m | Reduced -10.5k |
| Jasper Ridge Partners, L.P. 0.89% of their portfolio | 87.1k $35.7m | Unchanged |
| Clearbridge Investments, LLC 0.03% of their portfolio | 87.0k $35.7m | Reduced -4.7k |
| COOKSON PEIRCE & CO INC 1.57% of their portfolio | 86.8k $35.6m | Added +10.6k |
| Spyglass Capital Management LLC 1.98% of their portfolio | 81.9k $33.6m | New |
| BROWN CAPITAL MANAGEMENT LLC 0.94% of their portfolio | 79.2k $32.5m | Added +3.0k |
| Allen Investment Management, LLC 0.35% of their portfolio | 78.4k $32.2m | Reduced -86 |
| BAMCO INC /NY/ 0.08% of their portfolio | 74.7k $30.6m | Reduced -12.2k |
| Engineers Gate Manager LP 0.37% of their portfolio | 72.1k $29.6m | Added +44.7k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.11% of their portfolio | 70.0k $28.7m | Added +38.2k |
| VOYA INVESTMENT MANAGEMENT LLC 0.03% of their portfolio | 68.2k $28.0m | Added +35.8k |
| TWINBEECH CAPITAL LP 0.63% of their portfolio | 67.7k $27.8m | New |
| Swiss National Bank 0.02% of their portfolio | 67.1k $27.5m | Added +1.0k |
| Legal & General Group Plc 0.01% of their portfolio | 65.3k $26.8m | Reduced -1.1k |
| California Public Employees Retirement System 0.02% of their portfolio | 64.2k $26.3m | Added +4.4k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.05% of their portfolio | 63.3k $26.0m | New |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.21% of their portfolio | 62.8k $25.8m | Reduced -1.3k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.04% of their portfolio | 62.4k $25.6m | Added +47.9k |
| MARK ASSET MANAGEMENT LP 2.84% of their portfolio | 57.7k $23.7m | Reduced -6.2k |
| Cerity Partners LLC 0.04% of their portfolio | 57.1k $23.4m | Added +1.5k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.04% of their portfolio | 55.0k $22.5m | Reduced -13.3k |
| CROSSLINK CAPITAL INC 1.25% of their portfolio | 53.6k $22.0m | Reduced -36.9k |
| Pictet Asset Management Holding SA 0.02% of their portfolio | 53.4k $21.9m | Reduced -18.5k |
| CONGRESS ASSET MANAGEMENT CO 0.15% of their portfolio | 52.9k $21.7m | Added +3.3k |
| Ensign Peak Advisors, Inc 0.04% of their portfolio | 51.6k $21.2m | Added +14.0k |
| ACADIAN ASSET MANAGEMENT LLC 0.04% of their portfolio | 49.0k $20.1m | Added +27.2k |
| Trexquant Investment LP 0.22% of their portfolio | 48.1k $19.7m | New |
| WESTWOOD HOLDINGS GROUP INC 0.14% of their portfolio | 48.1k $19.7m | Reduced -2.0k |
| Retirement Systems of Alabama 0.07% of their portfolio | 48.0k $19.7m | Added +1.9k |
| Driehaus Capital Management LLC 0.15% of their portfolio | 47.2k $19.4m | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 43.5k $17.8m | Added +1.1k |
| Walleye Capital LLC 0.16% of their portfolio | 42.7k $17.5m | Added +27.5k |
| TUDOR INVESTMENT CORP ET AL 0.13% of their portfolio | 41.9k $17.2m | New |
| STEADFAST CAPITAL MANAGEMENT LP 0.32% of their portfolio | 41.8k $17.1m | New |
| VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio | 40.2k $16.5m | Added +11.0k |
| BARCLAYS PLC 0.01% of their portfolio | 38.3k $15.7m | Added +1.4k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.06% of their portfolio | 37.7k $15.5m | Reduced -28.8k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio | 36.4k $14.9m | Added +34.7k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.03% of their portfolio | 35.5k $14.6m | Added +2.7k |