Skip to content

DUOL · Duolingo, Inc.

Technology · −4.8% on Oct 16

☆ Add to watchlist

Updated Oct 17 · 6 feeds behind: Insider filings, 2 days, and 5 more · Every feed →

On this page

The market view

Price chart

The interactive DUOL chart (by TradingView) loads here.

Our take

None of our tested rules has picked DUOL yet.

The 0–100 score for DUOL
Members see one number for how strongly these rules agree on DUOL, and the day each rule fired. Better-tested rules count more, and so do different kinds of filings that point the same way.
See pricing →
Already a member? Sign in

Compare with this company’s history

Is disclosure activity unusual?

See how many different insiders or members of Congress reported purchases or sales of DUOL. Each bar covers 28 days, by disclosure date. Several trades by one person count once in each group and period.

Latest period: Sep 21, 2026–Oct 18, 2026 · UTC dates · today is excluded

Congress purchases

Sparse history

Only 0 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual.

Latest 28 days
0
Earlier median
0
Earlier range
0–0
Distinct filers per 28 daysScale: 0–1
Oct 20, 2025Oct 18, 2026
Earlier periodsLatest 28 daysEarlier median 0

Who appears in the latest period?

No named filers on file for this period.

Up to three filers; one example disclosure each.

Inspect this period’s filings

The history behind this view

First stored company disclosure: Aug 13, 2025. Newest disclosure across this feed: Oct 15, 2026.

Earlier periods in the comparison: 12. Outlined periods are missing data, so they are left out of the comparison. The chart scale changes with the category.

Exact counts, dates and filings for all four categories
Insider purchases · Short history

Only 1 earlier period is on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 0; range: 0–0.

Insider purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 2026—Unavailable
Jun 29, 2026–Jul 26, 2026—Unavailable
Jul 27, 2026–Aug 23, 20260Partial; excluded
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Insider sales · Short history

Only 1 earlier period is on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 3; range: 3–3.

Insider sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 2026—Unavailable
Jun 29, 2026–Jul 26, 2026—Unavailable
Jul 27, 2026–Aug 23, 20263Partial; excluded
Aug 24, 2026–Sep 20, 20263Within stored history
Sep 21, 2026–Oct 18, 2026Latest period1Within stored history
Congress purchases · Sparse history

Only 0 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual. Earlier median: 0; range: 0–0.

Congress purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 20250Within stored history
Nov 17, 2025–Dec 14, 20250Within stored history
Dec 15, 2025–Jan 11, 20260Within stored history
Jan 12, 2026–Feb 8, 20260Within stored history
Feb 9, 2026–Mar 8, 20260Within stored history
Mar 9, 2026–Apr 5, 20260Within stored history
Apr 6, 2026–May 3, 20260Within stored history
May 4, 2026–May 31, 20260Within stored history
Jun 1, 2026–Jun 28, 20260Within stored history
Jun 29, 2026–Jul 26, 20260Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Congress sales · Sparse history

Only 0 of 12 earlier periods had activity. That is too little recurring activity to label this count unusual. Earlier median: 0; range: 0–0.

Congress sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 20250Within stored history
Nov 17, 2025–Dec 14, 20250Within stored history
Dec 15, 2025–Jan 11, 20260Within stored history
Jan 12, 2026–Feb 8, 20260Within stored history
Feb 9, 2026–Mar 8, 20260Within stored history
Mar 9, 2026–Apr 5, 20260Within stored history
Apr 6, 2026–May 3, 20260Within stored history
May 4, 2026–May 31, 20260Within stored history
Jun 1, 2026–Jun 28, 20260Within stored history
Jun 29, 2026–Jul 26, 20260Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
How to read this comparison

The median is the middle count in up to 12 earlier, non-overlapping 28-day periods; the range runs from the smallest to the largest count. The latest period is excluded from both. A comparison needs at least 6 earlier periods, including 3 with activity. The feed’s latest disclosure must be within 7 days of the current period’s end. This freshness check does not verify complete collection.

Insiders include individuals and reporting entities; only purchase and sale codes enter this view. Congress counts reporting members, including their disclosed family transactions. The same filer can appear in purchases and sales, so these categories should not be added into a net count.

These are stored disclosures, not a complete measure of trading. Reporting delays and collection gaps can change the comparison. More activity does not identify a motive or predict a stock’s return.

Company timeline

What has been happening?

May 1, 2026–Oct 16, 2026. Select a month in a category to inspect its records.

Company filings

Insiders

Public officials

Owners & lobbying

Insiders · Oct 2026

  1. Disclosed
    Ahn Luis von · Sale

    Transaction dated Oct 7, 2026

  2. Disclosed
    Ahn Luis von · Sale

    Transaction dated Oct 7, 2026

  3. Disclosed
    Ahn Luis von · Sale

    Transaction dated Oct 7, 2026

  4. Disclosed
    Ahn Luis von · Sale

    Transaction dated Oct 7, 2026

  5. Filed
All 37 records in this snapshot
  1. Disclosed
    Ahn Luis von · Sale

    Transaction dated Oct 7, 2026

  2. Disclosed
    Ahn Luis von · Sale

    Transaction dated Oct 7, 2026

  3. Disclosed
    Ahn Luis von · Sale

    Transaction dated Oct 7, 2026

  4. Disclosed
    Ahn Luis von · Sale

    Transaction dated Oct 7, 2026

  5. Filed
  6. Disclosed
    Ahn Luis von · Sale

    Transaction dated Sep 24, 2026

  7. Disclosed
    Ahn Luis von · Sale

    Transaction dated Sep 24, 2026

  8. Disclosed
    Ahn Luis von · Sale

    Transaction dated Sep 24, 2026

  9. Filed
  10. Disclosed
    Ahn Luis von · Sale

    Transaction dated Sep 21, 2026

  11. Disclosed
    Ahn Luis von · Sale

    Transaction dated Sep 21, 2026

  12. Disclosed
    Ahn Luis von · Sale

    Transaction dated Sep 22, 2026

  13. Disclosed
    Ahn Luis von · Sale

    Transaction dated Sep 22, 2026

  14. Filed
  15. Filed
  16. Filed
  17. Disclosed
    Ahn Luis von · Sale

    Transaction dated Sep 16, 2026

  18. Disclosed
    Ahn Luis von · Sale

    Transaction dated Sep 16, 2026

  19. Disclosed
    Stephen C. Chen · Sale

    Transaction dated Sep 14, 2026

  20. Disclosed
    Stephen C. Chen · Sale

    Transaction dated Sep 14, 2026

  21. Disclosed
    William B Gordon · Sale

    Transaction dated Sep 8, 2026

  22. Disclosed
    William B Gordon · Sale

    Transaction dated Sep 8, 2026

  23. Disclosed
    William B Gordon · Sale

    Transaction dated Sep 8, 2026

  24. Disclosed
    William B Gordon · Sale

    Transaction dated Sep 8, 2026

  25. Disclosed
    William B Gordon · Sale

    Transaction dated Sep 8, 2026

  26. Disclosed
    William B Gordon · Sale

    Transaction dated Sep 8, 2026

  27. Disclosed
    Natalie Glance · Sale

    Transaction dated Aug 17, 2026

  28. Disclosed
    Natalie Glance · Sale

    Transaction dated Aug 18, 2026

  29. Disclosed
    Robert Meese · Sale

    Transaction dated Aug 17, 2026

  30. Filed
  31. Disclosed
    Stephen C. Chen · Sale

    Transaction dated Aug 17, 2026

  32. Filed
  33. Filed
  34. Filed
  35. Filed
  36. Filed
  37. Filed

Month counts include every record on file. The lists show the newest records on this page. A dash means none on file that month. Trades use disclosure dates; contract dates follow the source record. Nearby events do not establish the cause of a price move.

Who's buying and selling · last 90 days

Congress

No Congress trades on DUOL disclosed in the last 90 days.

See every Congress trade on DUOL →

Company insiders

0 buys · 9 sells (26 filed lots) · $37.7M sold

  1. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$8.3Mdisclosed Oct 9 · filed 2 days after the trade
  2. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$4.6Mdisclosed Oct 9 · filed 2 days after the trade
  3. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$3Mdisclosed Oct 9 · filed 2 days after the trade
  4. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$784Kdisclosed Oct 9 · filed 2 days after the trade
  5. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$1.1Mdisclosed Sep 28 · filed 4 days after the trade
  6. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$137Kdisclosed Sep 28 · filed 4 days after the trade
  7. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$5.8Mdisclosed Sep 28 · filed 4 days after the trade
  8. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$5Mdisclosed Sep 23 · filed 2 days after the trade
  9. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$621Kdisclosed Sep 23 · filed 2 days after the trade
  10. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$519Kdisclosed Sep 23 · filed 1 day after the trade
See every insider trade on DUOL →

Big holders (Schedule 13D / 13G): 2 filings in the last 90 days · newest: Aqr Capital Management LLC (13G), Aug 12, 2026 ↗

Filings & events

Company filings (8-K) 42

Events the company must report to the SEC within days — results, deals, departures, restatements.

What it files 8-Ks about

  • Quarterly or yearly results · item 2.0212
  • Directors or officers joined, left or got new pay · item 5.024
  • Shareholder vote results · item 5.074
  • Shared information with investors · item 7.012
  • Signed a major agreement · item 1.012
  • Took on new debt · item 2.032

Filing red flags 3

Warning signs in the company's own SEC filings — going-concern doubts, control weaknesses, staff comment letters, late filings, restatements, Wells notices, clinical holds, dividend cuts.

Planned insider sales (Form 144) 118

Notices insiders file before they sell certain shares, such as ones they got straight from the company.

13 in the last 90 days · 118 notices on file

The notices on file don't give the sale's size; each sale shows up under company insiders once it is reported.

5% owners (13D / 13G) 4

Investors who reported owning 5% or more — 13D for owners who may push for changes, 13G for owners who just hold.

Push for changes, or just hold?

  • 13D, may push for changes: 0 filings
  • 13G, just holds: 4 filings

Filed by Aqr Capital Management LLC · Vanguard Capital Management LLC · Capital World Investors · Baillie Gifford & Co

Biggest named funds (13F)

The largest DUOL holdings among the well-known funds whose quarterly 13F filings we read — opens here.

Every disclosed trade on DUOL

  1. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$8.3Mdisclosed Oct 9 · filed 2 days after the trade
  2. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$4.6Mdisclosed Oct 9 · filed 2 days after the trade
  3. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$3Mdisclosed Oct 9 · filed 2 days after the trade
  4. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$784Kdisclosed Oct 9 · filed 2 days after the trade
  5. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$1.1Mdisclosed Sep 28 · filed 4 days after the trade
  6. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$137Kdisclosed Sep 28 · filed 4 days after the trade
  7. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$5.8Mdisclosed Sep 28 · filed 4 days after the trade
  8. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$5Mdisclosed Sep 23 · filed 2 days after the trade
  9. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$621Kdisclosed Sep 23 · filed 2 days after the trade
  10. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$519Kdisclosed Sep 23 · filed 1 day after the trade
  11. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$30Kdisclosed Sep 23 · filed 1 day after the trade
  12. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$4.1Mdisclosed Sep 18 · filed 2 days after the trade
  13. ▼ SELLAhn Luis von President & CEO, Co-FounderDUOL Duolingo, Inc.$155Kdisclosed Sep 18 · filed 2 days after the trade
  14. ▼ SELLStephen C. Chen General CounselDUOL Duolingo, Inc.$311Kdisclosed Sep 15 · filed 1 day after the trade
  15. ▼ SELLStephen C. Chen General CounselDUOL Duolingo, Inc.$895Kdisclosed Sep 15 · filed 1 day after the trade
  16. ▼ SELLWilliam B Gordon DirectorDUOL Duolingo, Inc.$392Kdisclosed Sep 10 · filed 2 days after the trade
  17. ▼ SELLWilliam B Gordon DirectorDUOL Duolingo, Inc.$29.7Kdisclosed Sep 10 · filed 2 days after the trade
  18. ▼ SELLWilliam B Gordon DirectorDUOL Duolingo, Inc.$15.2Kdisclosed Sep 10 · filed 2 days after the trade
  19. ▼ SELLWilliam B Gordon DirectorDUOL Duolingo, Inc.$115Kdisclosed Sep 10 · filed 2 days after the trade
  20. ▼ SELLWilliam B Gordon DirectorDUOL Duolingo, Inc.$396Kdisclosed Sep 10 · filed 2 days after the trade
  21. ▼ SELLWilliam B Gordon DirectorDUOL Duolingo, Inc.$508Kdisclosed Sep 10 · filed 2 days after the trade
  22. ▼ SELLNatalie Glance Chief Engineering OfficerDUOL Duolingo, Inc.$355Kdisclosed Aug 19 · filed 2 days after the trade
  23. ▼ SELLNatalie Glance Chief Engineering OfficerDUOL Duolingo, Inc.$68.8Kdisclosed Aug 19 · filed 1 day after the trade
  24. ▼ SELLStephen C. Chen General CounselDUOL Duolingo, Inc.$132Kdisclosed Aug 19 · filed 2 days after the trade
  25. ▼ SELLRobert Meese Chief Business OfficerDUOL Duolingo, Inc.$175Kdisclosed Aug 19 · filed 2 days after the trade
See all 32 trades on DUOL →
People & votes

Which members of Congress traded DUOL, sponsored bills that touch it and voted on them — opens here.