Question 1

Does Artisan Partners own LNTH stock?

Accepted Answer

No. Artisan Partners exited its LNTH (Lantheus) position in Q4 2025. Its Q3 2025 13F listed 403,994 shares worth $20.7M.

Question 2

How many shares of LNTH does Artisan Partners own?

Accepted Answer

None since Q4 2025, when Artisan Partners exited the position. Its Q3 2025 13F listed 403,994 shares worth $20.7M.

Question 3

What is Artisan Partners' LNTH position worth?

Accepted Answer

Artisan Partners' LNTH position was worth $20.7M in its Q3 2025 13F, before the exit in Q4 2025.

Question 4

Is Artisan Partners buying or selling LNTH?

Accepted Answer

In Q4 2025, Artisan Partners exited its entire LNTH position.

Question 5

When did Artisan Partners first buy LNTH?

Accepted Answer

Artisan Partners first reported LNTH in its Q1 2021 13F and listed it in 19 quarterly 13F filings.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2025-Q4 Latest	Exited	0	-100.0%	$0	0.0%	$67.16	0
2025-Q3	Decreased	403,994	-3.3%	$20.7M	0.0%	$50.62	0
2025-Q2	Decreased	417,944	-0.8%	$34.2M	0.1%	$81.49	0
2025-Q1	Increased	421,538	+25.0%	$41.1M	0.1%	$96.16	36
2024-Q4	Increased	337,234	+36.1%	$30.2M	0.0%	$89.13	37
2024-Q3	Increased	247,766	+23.6%	$27.2M	0.0%	$107.36	35