Explore more topics
Public ownership evidence

Duolingo, Inc. Class A Common Stock (DUOL) Ownership Disclosures

Read DUOL insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-11-07T14:03:26.246Z

Jump to a section

Read one actual disclosure before using it

Show the table · 1 row, 6 columns

Scroll sideways to compare all columns. Select a heading to sort.

2026-11-052026-11-04Chen Stephen C.S3,700Not reported

First displayed source row from Recent Form 4 activity. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-11-04 and its public availability date is 2026-11-05. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC 0001628280-26-071096 ↗SEC 0001628280-26-070424 ↗SEC 0001628280-26-070424 ↗

Recent Form 4 activity

Inspect all 41 displayed rows: Recent Form 4 activity

Scroll sideways to compare all columns. Select a heading to sort.

2026-11-052026-11-04Chen Stephen C.S3,700Not reported
2026-11-052026-11-02GORDON WILLIAM BS700Not reported
2026-11-052026-11-02GORDON WILLIAM BS1,374Not reported
2026-11-052026-11-02GORDON WILLIAM BS1,326Not reported
2026-11-052026-11-02GORDON WILLIAM BS1,759Not reported
2026-11-052026-11-02GORDON WILLIAM BS3,941Not reported
2026-11-052026-11-02GORDON WILLIAM BS300Not reported
2026-11-052026-11-02GORDON WILLIAM BS300Not reported
2026-11-052026-11-02GORDON WILLIAM BS300Not reported
2026-10-142026-10-10Shelton James HA100Not reported
2026-10-142026-10-10Schlosser MarioA116Not reported
2026-10-142026-10-10Lilly III John OsborneA98Not reported
2026-10-142026-10-10Bohutinsky AmyA108Not reported
2026-10-092026-10-07von Ahn LuisS5,114Not reported
2026-10-092026-10-07von Ahn LuisS29,871Not reported
2026-10-092026-10-07von Ahn LuisS55,036Not reported
2026-10-092026-10-07von Ahn LuisS20,025Not reported
2026-09-282026-09-24von Ahn LuisS900Not reported
2026-09-282026-09-24von Ahn LuisS7,024Not reported
2026-09-282026-09-24von Ahn LuisS38,758Not reported
2026-09-232026-09-22von Ahn LuisS3,414Not reported
2026-09-232026-09-22von Ahn LuisS200Not reported
2026-09-232026-09-21von Ahn LuisS4,109Not reported
2026-09-232026-09-21von Ahn LuisS33,257Not reported
2026-09-192026-09-16von Ahn LuisS1,020Not reported
2026-09-192026-09-16von Ahn LuisS27,272Not reported
2026-09-152026-09-14Chen Stephen C.S5,965Not reported
2026-09-152026-09-14Chen Stephen C.S2,107Not reported
2026-09-102026-09-08GORDON WILLIAM BS100Not reported
2026-09-102026-09-08GORDON WILLIAM BS200Not reported
2026-09-102026-09-08GORDON WILLIAM BS2,675Not reported
2026-09-102026-09-08GORDON WILLIAM BS3,483Not reported
2026-09-102026-09-08GORDON WILLIAM BS2,742Not reported
2026-09-102026-09-08GORDON WILLIAM BS800Not reported
2026-08-202026-08-18Glance NatalieS1,037Not reported
2026-08-202026-08-18Glance NatalieS502Not reported
2026-08-202026-08-17Glance NatalieS2,751Not reported
2026-08-202026-08-17Meese RobertS1,354Not reported
2026-08-202026-08-17Chen Stephen C.S1,024Not reported
2026-08-132026-08-10KRAWCHECK SALLIEA3,280Not reported
2026-08-132026-08-10KRAWCHECK SALLIEA1,312Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

Inspect all 50 displayed rows: Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

Scroll sideways to compare all columns. Select a heading to sort.

Cornerstone Financial Management LLC2025-12-312026-08-293$527None
OPTIMIZE FINANCIAL INC.2026-06-302026-08-286,266$720,715None
Corient Private Wealth LP2026-06-302026-08-283,888$447,201None
Redwood Investment Management, LLC2024-12-312026-08-284,407$1,429,000None
Principia Wealth Advisory, LLC2026-06-302026-08-2718$2,070None
Principia Wealth Advisory, LLC2026-03-312026-08-271$99None
Advisors Asset Management, Inc.2025-09-302026-08-27118$37,977None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-03-312026-08-265,215$514,043None
VIRGINIA RETIREMENT SYSTEMS ET Al2026-06-302026-08-2610,275$1,181,831None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-2544,511$5,119,655None
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2026-06-302026-08-255,119,655$44,511,000None
Advisors Asset Management, Inc.2025-12-312026-08-22298$52,299None
Nantahala Capital Management, LLC2026-06-302026-08-2083,877$9,647,533None
MERCER GLOBAL ADVISORS INC /ADV2026-06-302026-08-2034,654$3,985,854None
Ensign Peak Advisors, Inc2026-03-312026-08-1928,110$2,770,803None
Ensign Peak Advisors, Inc2025-12-312026-08-1930,352$5,326,776None
Ensign Peak Advisors, Inc2025-09-302026-08-1926,204$8,433,495None
Fulcrum Asset Management LLP2026-06-302026-08-19129$14,968None
Empowered Funds, LLC2026-06-302026-08-1814,927$1,716,904None
Empowered Funds, LLC2026-06-302026-08-181,474$169,539None
Empowered Funds, LLC2026-06-302026-08-1837$4,256None
Transamerica Financial Advisors, LLC2026-06-302026-08-185$575None
UNITED CAPITAL FINANCIAL ADVISORS, LLC2026-06-302026-08-184,738$544,965None
CAPSTONE INVESTMENT ADVISORS, LLC2026-06-302026-08-189,157$1,053,238None
Wiser Advisor Group LLC2026-06-302026-08-1827$3,106None
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO2026-06-302026-08-1810,968$1,261,539None
EFG International AG2026-06-302026-08-1543$4,946None
Lotus Technology Management, LP2026-06-302026-08-157,675$948,576None
Odyssean, LLC2026-06-302026-08-1512,340$1,419,347None
Investors Portfolio Services LLC2026-06-302026-08-153$345None
DARK FOREST CAPITAL MANAGEMENT LP2026-06-302026-08-1512,833$1,476,052None
CAXTON ASSOCIATES LLP2026-06-302026-08-1512,776$1,469,496None
SEI INVESTMENTS CO2026-06-302026-08-1546,032$5,301,190None
SEI INVESTMENTS CO2026-06-302026-08-154,587$527,597None
Murphy & Mullick Capital Management Corp2026-06-302026-08-15320$36,806None
Aster Capital Management (DIFC) Ltd2026-06-302026-08-152,436$280,189None
Axxion S.A.2026-06-302026-08-1510,610$1,220,362None
Federation des caisses Desjardins du Quebec2026-06-302026-08-15269$30,957None
Federation des caisses Desjardins du Quebec2026-06-302026-08-151,672$192,313None
Advisors Asset Management, Inc.2026-06-302026-08-15623$71,657None
MANNING & NAPIER ADVISORS LLC2026-06-302026-08-158$928None
Marex Group Ltd2026-06-302026-08-1519,465$2,238,864None
Marex Group Ltd2026-06-302026-08-1520,440$2,351,009None
Polymer Capital Management (US) LLC2026-06-302026-08-152,539$292,036None
Quarry LP2026-06-302026-08-15639$73,498None
NFSG Corp2026-06-302026-08-1580$9,202None
Caerus Investment Advisors, LLC2026-06-302026-08-152,027$233,146None
Militia Capital Partners, LP2025-09-302026-08-151,000$321,840Put
Militia Capital Partners, LP2025-06-302026-08-153,000$1,230,060Put
Treasurer of the State of North Carolina2026-06-302026-08-1516,385$1,885,000None

90-day public filing window, up to 50 source positions.

Cornerstone Financial Management LLC ↗OPTIMIZE FINANCIAL INC. ↗Corient Private Wealth LP ↗Redwood Investment Management, LLC ↗Principia Wealth Advisory, LLC ↗Principia Wealth Advisory, LLC ↗Advisors Asset Management, Inc. ↗VIRGINIA RETIREMENT SYSTEMS ET Al ↗VIRGINIA RETIREMENT SYSTEMS ET Al ↗CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM ↗

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

Show the table · 0 rows, 5 columns

Scroll sideways to compare all columns. Select a heading to sort.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Institutional source directory ↗Congressional source directory ↗

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.