Company · Ownership research

ARGENX SE ARGX

CIK 0001697862 · CUSIP 04016X101

Insider tradingInitial holdingsInstitutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 04016X101 (ARGX), not CUSIP 04016X901 (ARGX), CUSIP 04016X951 (ARGX), CUSIP N0610Q109 (ARGNF), and does not merge CUSIPs.

This page lists the top 20 of 327 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$2.17B 5,504,506 shares	0.27%	+1.83M(+49.80%)Added	SEC filing ↗ May 15, 2024	▾
02	FMR LLC CIK 315066 · View history	$1.29B 3,270,022 shares	0.09%	-542.35K(-14.20%)Reduced	SEC filing ↗ May 13, 2024	▾
03	Artisan Partners Limited Partnership CIK 1466153 · View history	$1.26B 3,189,600 shares	1.83%	+15.12K(+0.50%)Added	SEC filing ↗ May 13, 2024	▾
04	JANUS HENDERSON GROUP PLC CIK 1274173 · View history	$872.69M 2,216,648 shares	0.48%	+439.89K(+24.80%)Added	SEC filing ↗ May 15, 2024	▾
05	T. Rowe Price Investment Management, Inc. CIK 1897612 · View history	$832.91M 2,115,486 shares	0.51%	+933.37K(+79.00%)Added	SEC filing ↗ May 15, 2024	▾
06	Capital World Investors CIK 1422849 · View history	$734.13M 1,864,596 shares	0.12%	-96.61K(-4.90%)Reduced	SEC filing ↗ May 14, 2024	▾
07	Avoro Capital Advisors LLC CIK 1633313 · View history	$487.61M 1,238,467 shares	5.69%	+3.90K(+0.30%)Added	SEC filing ↗ May 15, 2024	▾
08	BlackRock Inc. CIK 1364742 · View history	$412.34M 1,047,289 shares	0.01%	+55.25K(+5.60%)Added	SEC filing ↗ May 10, 2024	▾
09	Bellevue Group AG CIK 1674546 · View history	$319.31M 811,016 shares	4.87%	-58.19K(-6.70%)Reduced	SEC filing ↗ May 15, 2024	▾
10	MORGAN STANLEY CIK 895421 · Amended · View history	$273.20M 693,880 shares	0.02%	+40.99K(+6.30%)Added	SEC filing ↗ Oct 17, 2024	▾
11	RTW INVESTMENTS, LP CIK 1493215 · View history	$262.69M 667,195 shares	3.88%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
12	Clearbridge Investments, LLC CIK 1348883 · View history	$234.77M 596,277 shares	0.19%	+159.48K(+36.50%)Added	SEC filing ↗ May 13, 2024	▾
13	Paradigm Biocapital Advisors LP CIK 1855655 · View history	$217.38M 552,120 shares	7.65%	+129.54K(+30.70%)Added	SEC filing ↗ May 15, 2024	▾
14	Holocene Advisors, LP CIK 1700574 · View history	$192.45M 488,800 shares	0.71%	-39.90K(-7.50%)Reduced	SEC filing ↗ May 15, 2024	▾
15	MASSACHUSETTS FINANCIAL SERVICES CO /MA/ CIK 912938 · View history	$167.55M 425,547 shares	0.05%	-166.12K(-28.10%)Reduced	SEC filing ↗ May 14, 2024	▾
16	Invesco Ltd. CIK 914208 · View history	$165.03M 419,155 shares	0.04%	-17.08K(-3.90%)Reduced	SEC filing ↗ May 14, 2024	▾
17	SEI INVESTMENTS CO CIK 350894 · View history	$130.35M 331,067 shares	0.19%	-950(-0.30%)Reduced	SEC filing ↗ May 7, 2024	▾
18	Pictet Asset Management Holding SA CIK 1993888 · View history	$129.60M 329,168 shares	0.14%	+15.95K(+5.10%)Added	SEC filing ↗ May 14, 2024	▾
19	Deep Track Capital, LP CIK 1856083 · View history	$118.12M 300,000 shares	3.40%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
20	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$108.73M 276,172 shares	0.02%	-3.00K(-1.10%)Reduced	SEC filing ↗ May 15, 2024	▾

Showing 20 / 327 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

327

Cancelled or null records excluded

Disclosed shares

33,980,628

Not deduplicated across managers

Disclosed value

$13.38B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

ARGENX SE · Q1 2024

Explore all 327 reporting institutions.

This page includes 20 of 327 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.