Duolingo, Inc. (DUOL)
Every FINRA and SEC series the site collects for Duolingo, Inc.: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on Nasdaq, classified by the SEC as services-prepackaged software.
7.1M
Short interest
settlement 2026-08-14
4.5
Days to cover
-2.4% vs prior
42.7%
Short share of volume
2026-09-11
1,315
Fails to deliver
settlement 2026-08-14
-$874K
Insider flow, 90 days
0 buys, 5 sells
As of 2026-09-11.
Short interest
FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSONAs of 14 August 2026, short interest in DUOL is 7,091,179 shares, down 403,310 shares over the last month. Over the last 48 readings it ranged from 1,186,232 shares (15 May 2025) to 8,729,424 shares (13 February 2026). At the reported average volume of 1.6M shares a day that is 4.5 days to cover.
Embed this chartfree, with the attribution line it carries
<iframe src="https://xoomar.com/embed/stocks/duol" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-08-14 | 7,091,179 | -2.4% | 1,574,832 | 4.50 |
| 2026-07-31 | 7,263,743 | -3.1% | 1,004,121 | 7.23 |
| 2026-07-15 | 7,494,489 | +0.7% | 982,814 | 7.63 |
| 2026-06-30 | 7,440,425 | -6.0% | 1,637,652 | 4.54 |
| 2026-06-15 | 7,912,936 | +3.9% | 1,579,947 | 5.01 |
| 2026-05-29 | 7,615,582 | -2.2% | 1,197,098 | 6.36 |
| 2026-05-15 | 7,784,364 | +2.4% | 2,453,941 | 3.17 |
| 2026-04-30 | 7,604,206 | -2.9% | 1,594,098 | 4.77 |
| 2026-04-15 | 7,833,591 | -1.7% | 1,763,739 | 4.44 |
| 2026-03-31 | 7,972,506 | +4.4% | 1,613,937 | 4.94 |
| 2026-03-13 | 7,634,055 | -11.3% | 2,933,867 | 2.60 |
| 2026-02-27 | 8,601,297 | -1.5% | 4,339,043 | 1.98 |
| 2026-02-13 | 8,729,424 | +26.5% | 3,146,213 | 2.77 |
| 2026-01-30 | 6,902,698 | -7.1% | 2,013,293 | 3.43 |
| 2026-01-15 | 7,431,337 | +15.4% | 2,093,574 | 3.55 |
| 2025-12-31 | 6,441,438 | +29.6% | 1,204,086 | 5.35 |
| 2025-12-15 | 4,970,210 | -8.1% | 1,603,642 | 3.10 |
| 2025-11-28 | 5,405,604 | +0.8% | 1,934,934 | 2.79 |
| 2025-11-14 | 5,364,843 | +16.8% | 3,483,471 | 1.54 |
| 2025-10-31 | 4,594,054 | +19.1% | 1,181,405 | 3.89 |
| 2025-10-15 | 3,858,476 | +2.4% | 1,241,566 | 3.11 |
| 2025-09-30 | 3,768,549 | +9.2% | 1,707,483 | 2.21 |
| 2025-09-15 | 3,451,571 | +4.3% | 2,231,264 | 1.55 |
| 2025-08-29 | 3,308,303 | +9.4% | 1,731,918 | 1.91 |
Daily short volume
FINRA Reg SHO, last 60 sessions. JSONAs of 11 September 2026, the short share of DUOL volume is 42.7%, down 12.8 points over the last five sessions. Over the last 52 readings it ranged from 36.5% (27 July 2026) to 74.4% (31 August 2026). The latest reading is 17.2 points below the 30-session average of 59.9%, on 534K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-09-11 | 228K | 534K | 42.7% | 0 |
| 2026-09-10 | 354K | 575K | 61.6% | 0 |
| 2026-09-09 | 329K | 579K | 56.9% | 0 |
| 2026-09-08 | 379K | 664K | 57.1% | 12 |
| 2026-09-04 | 310K | 507K | 61.0% | 86 |
| 2026-09-03 | 354K | 639K | 55.4% | 739 |
| 2026-09-02 | 323K | 549K | 58.9% | 41 |
| 2026-09-01 | 519K | 951K | 54.5% | 102 |
| 2026-08-31 | 210K | 282K | 74.4% | 30 |
| 2026-08-28 | 179K | 271K | 66.1% | 0 |
| 2026-08-27 | 226K | 339K | 66.5% | 732 |
| 2026-08-26 | 254K | 352K | 72.1% | 119 |
| 2026-08-25 | 227K | 332K | 68.5% | 0 |
| 2026-08-24 | 213K | 335K | 63.5% | 0 |
| 2026-08-21 | 165K | 295K | 56.0% | 73 |
| 2026-08-20 | 221K | 334K | 66.2% | 401 |
| 2026-08-19 | 582K | 1.1M | 52.8% | 392 |
| 2026-08-18 | 385K | 714K | 53.9% | 696 |
| 2026-08-17 | 402K | 543K | 74.1% | 647 |
| 2026-08-14 | 322K | 457K | 70.4% | 83 |
| 2026-08-13 | 350K | 621K | 56.4% | 581 |
| 2026-08-12 | 219K | 371K | 59.0% | 937 |
| 2026-08-11 | 222K | 357K | 62.1% | 45 |
| 2026-08-10 | 350K | 565K | 61.9% | 27 |
| 2026-08-07 | 264K | 614K | 43.0% | 7,410 |
| 2026-08-06 | 981K | 1.5M | 64.6% | 42,093 |
| 2026-08-05 | 368K | 649K | 56.7% | 307 |
| 2026-08-04 | 356K | 723K | 49.2% | 1,122 |
| 2026-08-03 | 218K | 422K | 51.7% | 337 |
| 2026-07-31 | 303K | 518K | 58.6% | 113 |
Fails to deliver
SEC, by settlement date. JSONAs of 14 August 2026, the fails-to-deliver balance in DUOL is 1,315 shares, up 483 shares over the last settlement date. Over the last 52 readings it ranged from 2 shares (20 February 2026) to 239,338 shares (3 February 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-08-14 | 1,315 | $144.10 | $189K |
| 2026-08-10 | 832 | $130.90 | $109K |
| 2026-08-04 | 18,225 | $135.80 | $2.5M |
| 2026-08-03 | 57,173 | $134.81 | $7.7M |
| 2026-07-30 | 1,295 | $140.17 | $182K |
| 2026-07-28 | 784 | $132.82 | $104K |
| 2026-07-22 | 65 | $124.71 | $8K |
| 2026-07-20 | 1,500 | $133.85 | $201K |
| 2026-07-10 | 49,366 | $129.95 | $6.4M |
| 2026-07-08 | 219 | $131.95 | $29K |
| 2026-07-07 | 1,694 | $129.72 | $220K |
| 2026-06-29 | 2,619 | $121.49 | $318K |
| 2026-06-26 | 291 | $119.94 | $35K |
| 2026-06-22 | 22,091 | $125.56 | $2.8M |
| 2026-06-15 | 1,316 | $122.63 | $161K |
| 2026-06-08 | 257 | $109.03 | $28K |
| 2026-06-05 | 3 | $109.15 | $327 |
| 2026-04-30 | 14,857 | $106.82 | $1.6M |
| 2026-04-27 | 200 | $103.45 | $21K |
| 2026-04-21 | 155 | $104.84 | $16K |
| 2026-04-14 | 108 | $93.53 | $10K |
| 2026-04-13 | 220 | $90.03 | $20K |
| 2026-04-06 | 83 | $96.54 | $8K |
| 2026-04-01 | 255 | $98.57 | $25K |
| 2026-03-17 | 5,366 | $101.95 | $547K |
| 2026-03-13 | 5,857 | $94.92 | $556K |
| 2026-03-12 | 3,509 | $98.81 | $347K |
| 2026-02-27 | 564 | $117.45 | $66K |
| 2026-02-26 | 2,220 | $111.65 | $248K |
| 2026-02-23 | 4,530 | $112.94 | $512K |
Insider trades
SEC Form 4, newest first, 50 of 100 shown. JSONInsiders at DUOL reported 5 open-market sells worth $874K in the last 90 days and no open-market buys. Sells alone are a weak signal; insiders sell for tax, diversification and estate reasons all the time. Latest filing: Glance Natalie (Chief Engineering Officer) on 2026-08-18.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-08-18 | Glance Natalie | Chief Engineering Officer | Sell | 1K | $138.19 | $143K | 169K |
| 2026-08-18 | Glance Natalie | Chief Engineering Officer | Sell | 502 | $137.01 | $69K | 170K |
| 2026-08-17 | Glance Natalie | Chief Engineering Officer | Sell | 3K | $129.13 | $355K | 171K |
| 2026-08-17 | Meese Robert | Chief Business Officer | Sell | 1K | $129.13 | $175K | 169K |
| 2026-08-17 | Chen Stephen C. | General Counsel | Sell | 1K | $129.13 | $132K | 52K |
| 2026-08-10 | KRAWCHECK SALLIE | n/a | Grant | 3K | $0.00 | $0 | 5K |
| 2026-08-10 | KRAWCHECK SALLIE | n/a | Grant | 1K | $0.00 | $0 | 1K |
| 2026-07-10 | Bohutinsky Amy | n/a | Grant | 130 | $124.76 | $16K | 8K |
| 2026-06-03 | Shelton James H | n/a | Grant | 2K | $0.00 | $0 | 12K |
| 2026-06-03 | Lilly III John Osborne | n/a | Grant | 2K | $0.00 | $0 | 9K |
| 2026-06-03 | GORDON WILLIAM B | n/a | Grant | 2K | $0.00 | $0 | 78K |
| 2026-06-03 | Schlosser Mario | n/a | Grant | 2K | $0.00 | $0 | 4K |
| 2026-06-03 | Ross Bonnie | n/a | Grant | 2K | $0.00 | $0 | 3K |
| 2026-06-03 | Clemens Sara | n/a | Grant | 2K | $0.00 | $0 | 6K |
| 2026-06-03 | Bohutinsky Amy | n/a | Grant | 2K | $0.00 | $0 | 8K |
| 2026-05-18 | Glance Natalie | Chief Engineering Officer | Sell | 1K | $114.19 | $148K | 173K |
| 2026-05-18 | Glance Natalie | Chief Engineering Officer | Sell | 2K | $113.21 | $233K | 175K |
| 2026-05-18 | Chen Stephen C. | General Counsel | Sell | 700 | $114.22 | $80K | 53K |
| 2026-05-18 | Chen Stephen C. | General Counsel | Sell | 1K | $113.27 | $145K | 54K |
| 2026-05-15 | Glance Natalie | Chief Engineering Officer | Sell | 2K | $112.16 | $216K | 177K |
| 2026-05-15 | Glance Natalie | Chief Engineering Officer | Grant | 39K | $112.06 | $4.4M | 179K |
| 2026-05-15 | Meese Robert | Chief Business Officer | Sell | 1K | $112.16 | $159K | 171K |
| 2026-05-15 | Meese Robert | Chief Business Officer | Grant | 20K | $112.06 | $2.2M | 172K |
| 2026-05-15 | Chen Stephen C. | General Counsel | Sell | 820 | $112.16 | $92K | 55K |
| 2026-05-15 | Chen Stephen C. | General Counsel | Grant | 24K | $112.06 | $2.7M | 56K |
| 2026-05-12 | Chen Stephen C. | General Counsel | Option exercise | 648 | $14.42 | $9K | 31K |
| 2026-05-11 | von Ahn Luis | President & CEO, Co-Founder | Gift | 50K | $0.00 | $0 | 0 |
| 2026-05-11 | von Ahn Luis | President & CEO, Co-Founder | Conversion | 50K | $0.00 | $0 | 50K |
| 2026-03-25 | Munson Gillian | Chief Financial Officer | Grant | 134K | $0.00 | $0 | 138K |
| 2026-03-13 | Meese Robert | Chief Business Officer | Option exercise | 20K | $22.91 | $458K | 153K |
| 2026-03-13 | Meese Robert | Chief Business Officer | Option exercise | 6K | $14.42 | $81K | 133K |
| 2026-03-13 | Meese Robert | Chief Business Officer | Option exercise | 4K | $8.15 | $36K | 127K |
| 2026-03-03 | Shelton James H | n/a | Buy | 5K | $99.76 | $499K | 10K |
| 2026-02-27 | Glance Natalie | Chief Engineering Officer | Option exercise | 12K | $7.11 | $88K | 140K |
| 2026-02-27 | Glance Natalie | Chief Engineering Officer | Option exercise | 12K | $5.00 | $59K | 127K |
| 2026-02-18 | Skaruppa Matthew | Chief Financial Officer | Sell | 360 | $115.29 | $42K | 32K |
| 2026-02-18 | Skaruppa Matthew | Chief Financial Officer | Sell | 2K | $114.35 | $202K | 32K |
| 2026-02-18 | Skaruppa Matthew | Chief Financial Officer | Sell | 236 | $113.37 | $27K | 34K |
| 2026-02-18 | Skaruppa Matthew | Chief Financial Officer | Sell | 2K | $112.26 | $183K | 34K |
| 2026-02-18 | Glance Natalie | Chief Engineering Officer | Sell | 360 | $115.29 | $42K | 115K |
| 2026-02-18 | Glance Natalie | Chief Engineering Officer | Sell | 2K | $114.29 | $174K | 116K |
| 2026-02-18 | Glance Natalie | Chief Engineering Officer | Sell | 166 | $113.55 | $19K | 117K |
| 2026-02-18 | Glance Natalie | Chief Engineering Officer | Sell | 1K | $112.30 | $168K | 117K |
| 2026-02-18 | Chen Stephen C. | General Counsel | Sell | 80 | $115.47 | $9K | 31K |
| 2026-02-18 | Chen Stephen C. | General Counsel | Sell | 520 | $114.55 | $60K | 31K |
| 2026-02-18 | Chen Stephen C. | General Counsel | Sell | 480 | $113.95 | $55K | 31K |
| 2026-02-18 | Chen Stephen C. | General Counsel | Sell | 821 | $111.83 | $92K | 32K |
| 2026-02-17 | Meese Robert | Chief Business Officer | Sell | 1K | $110.06 | $110K | 123K |
| 2026-02-17 | Skaruppa Matthew | Chief Financial Officer | Sell | 2K | $110.06 | $206K | 36K |
| 2026-02-17 | Glance Natalie | Chief Engineering Officer | Sell | 2K | $110.06 | $192K | 119K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are the rarer, stronger signal.
Planned sales (Form 144)
Newest first. JSON5 Form 144 notices on file for DUOL worth $4.0M at the prices reported; 5 in the last 90 days worth $4.0M. Latest: WILLIAM B. GORDON filed on 2026-09-08 to sell 20,000 shares ($3.1M) from 2026-09-08.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-09-08 | WILLIAM B. GORDONDirector | 20K | $3.1M | 0.050% | 2026-09-08 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-18 | NATALIE GLANCEOfficer | 2K | $200K | 0.004% | 2026-08-18 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-17 | NATALIE GLANCEOfficer | 3K | $355K | 0.007% | 2026-08-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-17 | ROBERT MEESEOfficer | 1K | $175K | 0.003% | 2026-08-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-17 | STEPHEN CHENOfficer | 1K | $132K | 0.003% | 2026-08-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
13F holders
Tracked managers holding DUOL at their latest 13F. JSON7 of the 30 tracked managers held DUOL at their latest 13F, $762.4M in total at quarter-end prices. AQR Capital Management is the largest at $268.3M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 3 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| AQR Capital Management | 2026-06-30 | 2.3M | $268.3M | 0.09% | +2.2M |
| Two Sigma Investments | 2026-06-30 | 1.6M | $188.6M | 0.14% | +203K |
| Citadel Advisors | 2026-06-30 | 1.6M | $181.8M | 0.02% | -448K |
| D. E. Shaw & Co. | 2026-06-30 | 530K | $60.9M | 0.03% | -13K |
| Point72 Asset Management | 2026-06-30 | 243K | $27.9M | 0.03% | +207K |
| Renaissance Technologies | 2026-06-30 | 212K | $24.3M | 0.03% | -392K |
| Millennium Management | 2026-06-30 | 92K | $10.5M | 0.00% | new or n/a |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 2026 (quarter ended 2026-06-30) Duolingo, Inc. reported revenue of $298.5M, up 18.3% from the same quarter a year earlier, and net income of $33.2M (0.66 diluted EPS). In FY 2025 it generated $387.8M of operating cash flow.
- Cash
- $1.18B
- Equity
- $1.41B
- Total assets
- $2.07B
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 2026 | 2026-06-30 | $298.5M | $33.2M | 11.1% | 0.66 |
| Q1 2026 | 2026-03-31 | $292.0M | $43.5M | 14.9% | 0.89 |
| Q4 2025derived | 2025-12-31 | $282.9M | n/a | n/a | n/a |
| Q3 2025 | 2025-09-30 | $271.7M | $292.2M | 107.5% | 5.95 |
| Q2 2025 | 2025-06-30 | $252.3M | $44.8M | 17.8% | 0.91 |
| Q1 2025 | 2025-03-31 | $230.7M | $35.1M | 15.2% | 0.72 |
| Q4 2024derived | 2024-12-31 | $209.6M | n/a | n/a | n/a |
| Q3 2024 | 2024-09-30 | $192.6M | $23.4M | 12.1% | 0.49 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $1.04B | n/a | $387.8M | $18.1M | n/a | n/a |
| FY 2024 | 2024-12-31 | $748.0M | n/a | $285.5M | $12.1M | n/a | n/a |
| FY 2023 | 2023-12-31 | $531.1M | n/a | $153.6M | $3.2M | $0 | n/a |
| FY 2022 | 2022-12-31 | $369.5M | n/a | $53.7M | $5.6M | $0 | n/a |
| FY 2021 | 2021-12-31 | $250.8M | n/a | $9.2M | $3.6M | $868K | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are cash paid to repurchase common stock in the year (XBRL PaymentsForRepurchaseOfCommonStock), not authorizations. Balance sheet lines are as of 2026-06-30.
What this page is
Duolingo, Inc. in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page pulls every series the site collects for one ticker onto one URL, keyed by the SEC's own ticker list, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a summary sentence built from the rows (last value, change, range with dates) and its own JSON and CSV links. Nothing on the page is written by a model; the sentences change only when the data does. A page exists only for companies with data in at least two series, and every section says when its source last updated.
This page follows Duolingo, Inc. (DUOL), SEC CIK 1562088, listed on Nasdaq, classified by the SEC as services-prepackaged software. The cross-market tables live on the short interest and insider transactions hubs.
Source and method
- Short interest
- FINRA consolidated short interestTwice a month, about eight business days after settlement. Latest 2026-08-14.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesEvery trading day, loaded the following morning. Latest 2026-09-11.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataTwice a month, a few weeks after the half month ends. Latest 2026-08-14.JSON and CSV
- Planned sales
- SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-09-08.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRQuarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC XBRL company factsRefreshed weekly from the SEC's structured data; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Insider trades
- SEC EDGAR Form 4EDGAR read every 30 minutes; filings are due two business days after the trade. Latest 2026-08-18.JSON and CSV
- Company record
- EDGAR filing index for CIK 1562088Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 30 requests a minute without a key, 120 a minute with a key from a free account.
Data checks. Every dataset is checked against its source once a day. This dataset passed the last run, 13 Sep 05:40 UTC.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a crowded short are the combination that has historically preceded squeezes; insider sells next to a crowded short are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of DUOL is sold short?
What is DUOL's daily short volume?
Does DUOL have fails to deliver?
Are DUOL insiders buying or selling?
Have DUOL insiders filed to sell?
What did DUOL report last quarter?
Which funds hold DUOL?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.