Question 1

How many shares of CPRX does Janus Henderson Group Ltd. own?

Accepted Answer

As of 2026-Q1, Janus Henderson Group Ltd. holds 2M shares of CPRX (CATALYST PHARMACEUTICALS INC).

Question 2

What is Janus Henderson Group Ltd.'s CPRX position worth?

Accepted Answer

As of 2026-Q1, Janus Henderson Group Ltd.'s CPRX position is worth $49.5M.

Question 3

Is Janus Henderson Group Ltd. buying or selling CPRX?

Accepted Answer

In 2026-Q1, Janus Henderson Group Ltd. increased their CPRX position (+16.2% change in shares).

Question 4

When did Janus Henderson Group Ltd. first buy CPRX?

Accepted Answer

Based on available 13F filings, Janus Henderson Group Ltd. first reported a position in CPRX in 2024-Q3. They have held the position across 20 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Increased	2M	+16.2%	$49.5M	0.0%	$23.92	34
2025-Q4	Increased	1.7M	+200.6%	$40.1M	0.0%	$23.29	47
2025-Q3	Decreased	572,202	-23.9%	$11.3M	0.0%	$19.55	0
2025-Q2	Increased	751,562	+135.0%	$16.3M	0.0%	$21.78	45
2025-Q1	Decreased	319,829	-32.8%	$7.9M	0.0%	$24.69	0
2024-Q4	Increased	476,023	+32.2%	$9.9M	0.0%	$21.07	35
2024-Q3	Decreased	360,191	-83.4%	$7.2M	0.0%	$19.56	0