$ARGX

$882.02 +$8.32 (0.95%) Pre-market

$ARGX Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 61.9M shares outstanding

Who owns ARGX?

By type of holder

Institutions 45.6% Everyone else 54.4%

No insider has reported a holding in the last two years, so insiders are counted in "Everyone else".

Concentration Top 10 holders own 29.3%

FMR LLC 8.5% · Price T Rowe Associates Inc /MD/ 4.3%

Institutional ownership

45.6%

-0.9 pts vs last qtr

Institutional holders

505

+28 vs last qtr

Net shares bought

−580.9K

by institutions in Q2 2026

New / sold out

84 / 56

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Jupiter Topco LLC NEW +2.5M
FMR LLC +240.4K

Biggest sellers in Q2 2026

Janus Henderson Group PLC SOLD OUT −2.5M
Price T Rowe Associates Inc /MD/ −696.9K

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for argenx SE in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for argenx SE.

How patient are the owners?

Institutional shares by how long they've been held

5+ years71% 3–5 years7% 1–3 years7% Under 1 year15%

Quarterly turnover

15.9%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ARGX on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
F FMR LLC	5.2M	8.45%	+240.4K (+4.8%)	≤2021	0.2%
Shares held by quarter Peak holding5.7M (Q3'25) Change over 8 quarters+438.0K Share of the company8.450% FMR LLC's full portfolio →
PT Price T Rowe Associates Inc /MD/	2.7M	4.33%	−696.9K (−20.6%)	≤2021	0.3%
Shares held by quarter Peak holding5.8M (Q3'24) Change over 8 quarters−3.1M Share of the company4.330% Price T Rowe Associates Inc /MD/'s full portfolio →

FMR LLC

5.2M

% of company

8.45%

Change vs last qtr

+240.4K (+4.8%)

Held since

≤2021

Price T Rowe Associates Inc /MD/

2.7M

% of company

4.33%

Change vs last qtr

−696.9K (−20.6%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding argenx SE, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ARGX on Form N-PORT; together they hold 20.6% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
EF EUPAC Fund EUPAC Fund	$950M	1.0M	1.66%	0.67%	June 30, 2026
FG Fidelity Growth Company Fund Fidelity Mt. Vernon Street Trust	$628M	608.3K	0.98%	0.64%	August 31, 2026

EUPAC Fund

Position value

$950M

% of company

1.66%

% of the fund

0.67%

As of

June 30, 2026

Fidelity Growth Company Fund

Fidelity Mt. Vernon Street Trust

Position value

$628M

% of company

0.98%

% of the fund

0.64%

As of

August 31, 2026

23 more funds behind a free account

See every fund holding argenx SE and how much of the fund the position is.

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