Question 1

How many shares of ARGX does BAKER BROS. ADVISORS LP own?

Accepted Answer

As of 2026-Q1, BAKER BROS. ADVISORS LP holds 25,174 shares of ARGX (ARGENX SE).

Question 2

What is BAKER BROS. ADVISORS LP's ARGX position worth?

Accepted Answer

As of 2026-Q1, BAKER BROS. ADVISORS LP's ARGX position is worth $18.4M.

Question 3

When did BAKER BROS. ADVISORS LP first buy ARGX?

Accepted Answer

Based on available 13F filings, BAKER BROS. ADVISORS LP first reported a position in ARGX in 2024-Q2. They have held the position across 29 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price
2026-Q1 Latest	Unchanged	25,174	0.0%	$18.4M	0.1%	$748.72
2025-Q4	Decreased	25,174	-33.3%	$21.2M	0.1%	$837.90
2025-Q3	Unchanged	37,760	0.0%	$27.9M	0.2%	$719.04
2025-Q2	Decreased	37,760	-51.4%	$20.8M	0.2%	$560.14
2025-Q1	Decreased	77,760	-30.5%	$46M	0.5%	$589.15
2024-Q4	Unchanged	111,904	0.0%	$68.8M	0.7%	$619.96
2024-Q3	Unchanged	111,904	0.0%	$60.7M	0.6%	$536.11
2024-Q2	Decreased	111,904	-26.0%	$48.1M	0.6%	$430.04