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ARGX Institutional Ownership & 13F Holders | SmartMoneyDB

ARGXARGENX SE

Smart Money Ownership

Of the 12 tracked institutions holding ARGX, 6 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +4.5pt. It's a gauge of who owns the name, not just how many.

$160.0M · 0.1% of book

PRICE T ROWE ASSOCIATES INC /MD/

$2.5B · 0.3% of book

ARGX (ARGENX SE) Institutional Ownership Summary

Among the 12 tracked institutional investors we monitor, ARGX (ARGENX SE) is held with a combined value of $7.75B across 10,618,405 shares. The largest holder is FMR LLC with a position worth $3.64B (0.19% of their portfolio). 2 funds opened new positions in the most recent quarter. 6 funds increased their holdings. 3 funds reduced their position.

Total Institutional Value

$7.75B

Total Shares Held

10,618,405

Institutional Holders

% of Shares Outstanding

17.2%

of 61.88M shares · SEC 2025-12-31

Days to Cover

5.1+6.1%

1.54M shares short · FINRA 2026-07-15

Tracked 13F institutions hold 17.2% of ARGX's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2025-12-31), not a live float.

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

WELLINGTON MANAGEMENT GROUP LLP+50% shares~$250.0M ADAGE CAPITAL PARTNERS GP, L.L.C.New position~$65.7M BlackRock, Inc.+10% shares~$53.2M PRICE T ROWE ASSOCIATES INC /MD/+0% shares~$9.8M MILLENNIUM MANAGEMENT LLC+20% shares~$8.7M

13F Institutional Holders

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FMR LLC

0.19% of book-10.8%

$3.64B

PRICE T ROWE ASSOCIATES INC /MD/

0.28% of book+0.4%

$2.46B

WELLINGTON MANAGEMENT GROUP LLP

ADAGE CAPITAL PARTNERS GP, L.L.C.

0.10% of bookNew

$65.72M

MILLENNIUM MANAGEMENT LLC

0.02% of book+19.7%

$52.84M

BAKER BROS. ADVISORS LP

0.11% of book-

$18.38M

Point72 Asset Management, L.P.

#	Fund	Value↓	Shares	Portfolio %	Change
1	FMR LLC	$3.64B	4,991,034	0.19%	-10.8%
2	PRICE T ROWE ASSOCIATES INC /MD/	$2.46B	3,374,955	0.28%	+0.4%
3	WELLINGTON MANAGEMENT GROUP LLP	$745.92M	1,021,457	0.14%	+50.4%
4	BlackRock, Inc.	$590.29M	808,337	0.01%	+9.9%
5	CITADEL ADVISORS LLC	$160.02M	219,126	0.11%	-37.5%
6	ADAGE CAPITAL PARTNERS GP, L.L.C.	$65.72M	90,000	0.10%	New
7	MILLENNIUM MANAGEMENT LLC	$52.84M	72,365	0.02%	+19.7%
8	BAKER BROS. ADVISORS LP	$18.38M	25,174	0.11%	-
9	Point72 Asset Management, L.P.	$5.18M	7,100	0.01%	-25.3%
10	STATE STREET CORP	$3.73M	5,113	0.00%	+8.0%

Congress Trading

1 member · 1 disclosed trade in ARGX

Member	Type	Amount	Date
Alan Armstrong	Buy	$1,001 - $15,000	Mar 30, 2026

Frequently Asked Questions

Which institutional investors own the most ARGX stock?

As of the latest SEC 13F filings, FMR LLC is the largest institutional holder of ARGX with a position worth $3.64B, representing 0.19% of their portfolio. In total, 12 institutional investors hold ARGX with a combined value of $7.75B.

Are hedge funds buying or selling ARGX?

In the most recent quarter, 2 funds opened a new position in ARGX. Additionally, 6 increased their holdings and 3 reduced their positions.

What percentage of ARGX is owned by institutional investors?

Institutional investors hold $7.75B worth of ARGX stock across 12 positions. The largest institutional holder is FMR LLC with $3.64B in holdings.

What is a 13F filing and why does it matter for ARGX?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ARGX, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track ARGX institutional moves

Get notified when hedge funds change their ARGX positions.