392 institutions reported holding LNTH for 2026Q1, together 108% of the company, more than the 383 a quarter earlier. Institutions reporting a position: 392 (as of 2026Q1). Shares held by institutions: 71.2M, long US equity positions only, as reported on Form 13F. Reported value: $5.40B, at 2026-03-31 prices, not today's. Top 5 holders: 45%, of the whole company, between five filers.

LNTHLantheus Holdings, Inc.

HealthcareUSD

$100.82

$50.1152 weeks$109.01

Who owns LNTH

392 institutions reported holding LNTH for 2026Q1, together 108% of the company, more than the 383 a quarter earlier.

392

Institutions reporting a position · as of 2026Q1 · up from 383 the quarter before

Shares held by institutions: 71.2M
Shares held by institutions · 108% of the company · long US equity positions only, as reported on Form 13F
Reported value: $5.40B
Reported value · at 2026-03-31 prices, not today's
Top 5 holders: 45%
Top 5 holders · of the whole company, between five filers

Details›

Reporting quarter2026-03-31: 2026Q1
Quarters on record: 44
New positions: 59
Positions exited: 56
Added to: 127
Reduced: 123
Top 10 holdersof the company: 59%

Institutional ownership by quarter, 2015Q2 to 2026Q1
Quarter	Filers	Shares	Reported value
2026Q1	392	71.2M	$5.40B
2025Q4	383	69.3M	$4.61B
2025Q3	414	71.2M	$3.65B
2025Q2	468	80.8M	$6.61B
2025Q1	519	77.6M	$7.56B
2024Q4	482	74.5M	$6.66B
2024Q3	493	70.3M	$7.70B
2024Q2	451	68.2M	$5.48B
2024Q1	401	67.2M	$4.18B
2023Q4	395	69.4M	$4.30B
2023Q3	395	70.3M	$4.88B
2023Q2	429	67.9M	$5.69B
2023Q1	384	67.5M	$5.53B
2022Q4	365	66.1M	$3.36B
2022Q3	351	67.5M	$4.74B
2022Q2	317	67.3M	$4.44B

Largest reported holders, 2026Q1
Holder	Shares	% of company	Value
BlackRock Inc.	8.2M	12%	$621M
VANGUARD GROUP INC	6.7M	10%	$506M
FARALLON CAPITAL MANAGEMENT LLC	5.6M	8.5%	$424M
HENDERSON GROUP PLC	4.8M	7.3%	$362M
FMR LLC	4.6M	7.0%	$351M
STATE STREET CORP	2.4M	3.7%	$184M
AMERICAN CENTURY COMPANIES INC	1.8M	2.7%	$135M
GEODE CAPITAL MANAGEMENT LLC	1.8M	2.7%	$134M
MORGAN STANLEY	1.6M	2.5%	$125M
REINHART PARTNERS, LLC.	1.6M	2.4%	$119M

SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.

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