WELLINGTON MANAGEMENT GROUP LLP

Position in ARGX — Argenx SE

CIK 902219 Boston, MA

Back to ARGX Full portfolio

Position in ARGX

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$745,918,971

+$174,715,461 QoQ

Shares Held

1,021,457

+50.4% QoQ

Ownership

1.64%

of shares outstanding

% of Portfolio

0.14%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 0.ToString("F0")% Shared 82.99859905997022.ToString("F0")% None 17.001400940029782.ToString("F0")%

Common Shares in ARGX Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

WELLINGTON MANAGEMENT GROUP LLP holds $14,418,547,095 across 180 Biotechnology names. ARGX ranks #3 (5.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	3,212,589	$1,434,549,489
2	REGN	Regeneron Pharmaceuticals, Inc.	1,837,459	$1,419,694,318
3	ARGX	Argenx SE This page	1,021,457	$745,918,971
4	ALNY	Alnylam Pharmaceuticals, Inc.	1,935,925	$640,539,501
5	RVMD	Revolution Medicines, Inc.	6,027,819	$586,205,394
6	CYTK	Cytokinetics Inc	8,009,489	$527,905,416
7	IONS	Ionis Pharmaceuticals Inc	6,391,816	$479,961,458
8	ASND	Ascendis Pharma A/S	1,757,633	$402,023,391

All Filings in ARGX

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$745,918,971	1,021,457	+50.4%	Shares	Defined	2026-05-15
2025-12-31	$571,203,510	679,236	-7.0%	Shares	Defined	2026-02-17
2025-09-30	$538,408,468	729,986	+80.1%	Shares	Defined	2025-11-14
2025-06-30	$223,427,651	405,333	-0.2%	Shares	Defined	2025-08-14
2025-03-31	$240,417,926	406,204	-4.4%	Shares	Defined	2025-05-13
2024-12-31	$261,359,010	424,974	-11.9%	Shares	Defined	2025-02-12
2024-09-30	$261,470,117	482,346	+13.0%	Shares	Defined	2024-11-14
2024-06-30	$183,510,537	426,729	+54.5%	Shares	Defined	2024-08-14
2024-03-31	$108,734,436	276,172	-1.1%	Shares	Defined	2024-05-15
2023-12-31	$106,203,879	279,168	+26.2%	Shares	Defined	2024-02-12
2023-09-30	$108,754,452	221,212	-5.5%	Shares	Defined	2023-11-14
2023-06-30	$91,218,253	234,055	-9.4%	Shares	Defined	2023-08-14
2023-03-31	$96,228,470	258,276	+17.0%	Shares	Defined	2023-05-12
2022-12-31	$83,596,035	220,669	+2.4%	Shares	Defined	2023-02-13
2022-09-30	$76,115,107	215,593	+314.7%	Shares	Defined	2022-11-14
2022-06-30	$19,696,074	51,985	-78.2%	Shares	Defined	2022-08-15
2022-03-31	$75,204,900	238,511	-40.2%	Shares	Defined	2022-05-16
2021-12-31	$139,735,610	399,028	-40.3%	Shares	Defined	2022-02-11
2021-09-30	$201,946,192	668,696	+19.8%	Shares	Defined	2021-11-15
2021-06-30	$168,101,527	558,347	+7.7%	Shares	Defined	2021-08-16
2021-03-31	$142,765,754	518,413	-15.9%	Shares	Defined	2021-05-17
2020-12-31	$181,299,126	616,475	-41.9%	Shares	Defined	2021-02-12
2020-09-30	$278,364,128	1,060,354	+66.2%	Shares	Defined	2020-11-16
2020-06-30	$143,726,242	638,131	-7.3%	Shares	Defined	2020-08-14
2020-03-31	$90,701,634	688,542	—	Shares	Defined	2020-05-14
No filing history on record for this holder in this stock.