GROUP ONE TRADING LLC

Position in DUOL — Duolingo, Inc.

CIK 932540 CHICAGO, IL

Position in DUOL

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$2,812,008

+$1,164,017 QoQ

Shares Held

24,448

+46.2% QoQ

Ownership

0.052%

of shares outstanding

% of Portfolio

0.10%

of 13F equity value

Holder Rank

#115

of 429 holders

Holding Since

Dec 2021

12 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $130,925,289 across 87 Software - Application names. DUOL ranks #15 (2.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MSTR	Strategy Inc	220,929	$19,205,357
2	SHOP	Shopify Inc.	112,530	$12,848,675
3	U	Unity Software Inc.	355,514	$10,160,590
4	UBER	Uber Technologies, Inc	129,875	$9,371,780
5	ADBE	Adobe Inc.	39,832	$8,166,356
6	CDNS	Cadence Design Systems Inc	21,083	$7,912,871
7	BL	Blackline, Inc.	230,780	$6,477,994
8	HUBS	Hubspot Inc	34,715	$6,335,834

12 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$2,812,008	24,448	+46.2%	Shares	Sole	2026-08-14
2026-03-31	$1,647,991	16,719	+97.7%	Shares	Sole	2026-05-13
2025-12-31	$1,483,852	8,455	-21.0%	Shares	Sole	2026-02-12
2025-09-30	$3,443,366	10,699	+183.2%	Shares	Sole	2025-11-12
2025-06-30	$1,549,055	3,778	+43.1%	Shares	Sole	2025-08-14
2024-03-31	$582,551	2,641	-40.9%	Shares	Sole	2024-05-10
2023-12-31	$1,013,112	4,466	+1054.0%	Shares	Sole	2024-02-14
2023-09-30	$64,191	387	-94.2%	Shares	Sole	2023-11-09
2023-06-30	$952,409	6,663	-41.6%	Shares	Sole	2023-08-09
2023-03-31	$1,627,950	11,417	-40.8%	Shares	Sole	2023-05-12
2022-09-30	$1,835,272	19,272	+2270.5%	Shares	Sole	2022-11-09
2021-12-31	$86,267	813	—	Shares	Sole	2022-02-11
No filing history on record for this holder in this stock.