Lantheus Ownership | Who Owns Lantheus?

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Lantheus Ownership Summary

Lantheus is owned by 4.12% institutional investors, 2.27% insiders, and 93.60% retail investors. Blackrock is the largest institutional shareholder, holding 12.50% of LNTH shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.26% of its assets in Lantheus shares.

LNTH Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Lantheus	4.12%	2.27%	93.60%
Sector	Healthcare Stocks	279.19%	10.62%	-189.81%
Industry	Specialty & Generic Drug Manufacturers Stocks	2774.71%	11.85%	-2686.56%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	8.60M	12.50%	$690.17M
Blackrock funding, inc. /de	8.61M	12.40%	$770.70M
Vanguard group	7.24M	10.43%	$647.98M
Janus henderson group	6.20M	8.92%	$554.58M
Farallon capital management	5.32M	7.65%	$475.59M
State street	2.64M	3.80%	$236.15M
Fmr	2.50M	3.60%	$223.97M
Invesco	1.88M	2.70%	$167.75M
Geode capital management	1.68M	2.42%	$150.58M
Westfield capital management co lp	1.56M	2.24%	$139.12M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Resolute capital asset partners	136.90K	7.52%	$13.36M
Portolan capital management	812.63K	4.89%	$72.70M
Reinhart partners	1.37M	4.70%	$122.28M
Private capital management	500.29K	4.69%	$44.76M
Bioimpact capital	232.39K	3.90%	$22.68M
1492 capital management	61.62K	2.62%	$5.51M
Farallon capital management	5.32M	2.41%	$475.59M
S&t bank/pa	61.92K	1.77%	$5.54M
Sarissa capital management lp	63.00K	1.75%	$5.64M
Mangrove partners	175.24K	1.73%	$15.68M

Top Buyers

Holder	Shares	% Assets	Change
Janus henderson group	6.20M	0.28%	2.61M
Farallon capital management	5.32M	2.41%	2.36M
T. rowe price investment management	1.51M	0.08%	435.44K
Ubs group	490.14K	0.01%	427.41K
Raymond james financial	404.46K	0.01%	404.46K

Top Sellers

Holder	Shares	% Assets	Change
Lazard asset management	243.82K	0.03%	-839.02K
Lord, abbett	-	-	-431.11K
Fuller & thaler asset management	1.33K	0.00%	-396.73K
Voya investment management	60.59K	0.01%	-334.00K
Avidity partners management lp	-	-	-290.00K

New Positions

Holder	Shares	% Assets	Change	Value
Raymond james financial	404.46K	0.01%	404.46K	$36.18M
Epoch investment partners	364.22K	0.18%	364.22K	$35.55M
Keybank national association/oh	307.69K	0.11%	307.69K	$27.53M
Norges bank	292.75K	0.00%	292.75K	$26.19M
Wellington management group llp	223.81K	0.00%	223.81K	$20.02M

Sold Out

Holder	Change
Harbor investment advisory	-1.00
Claris advisors, llc / mo /	-1.00
Gradient investments	-4.00
Abich financial wealth management	-8.00
Sachetta	-9.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2025	27	-94.65%	2,832,340	-96.22%	4	0.04%	7	-97.29%	14	-91.76%
Dec 31, 2024	492	-6.29%	74,683,563	6.06%	107	1.05%	252	-5.62%	166	-8.29%
Sep 30, 2024	518	7.69%	70,264,532	2.85%	101	1.02%	265	9.50%	177	10.63%
Jun 30, 2024	475	9.20%	68,214,832	2.17%	99	1.04%	237	-4.82%	160	24.03%
Mar 31, 2024	435	0.23%	66,768,827	-3.74%	97	0.95%	249	16.90%	129	-13.42%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Mid-Cap ETF	2.25M	3.26%	1.48K
Vanguard US Total Market Shares ETF	2.22M	3.24%	1.63K
Vanguard Total Stock Mkt Idx Inv	2.20M	3.18%	35.13K
iShares Russell 2000 ETF	1.76M	2.55%	864.00
Vanguard Small Cap Index	1.72M	2.49%	10.22K
Vanguard Institutional Extnd Mkt Idx Tr	1.07M	1.55%	4.47K
Janus Henderson Enterprise D	1.03M	1.49%	-
Janus Inst Mid Cap Growth CF	1.03M	1.49%	221.63K
Janus Henderson US SMID Cap Growth MA	1.03M	1.48%	1.03M
Janus Henderson Triton D	1.01M	1.47%	-10.56K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jun 09, 2025	McHugh Julie	-	Sell	$423.77K
Jun 09, 2025	Marshall Robert J. Jr.	CFO and Treasurer	Sell	$2.25M
Jun 09, 2025	Marshall Robert J. Jr.	CFO and Treasurer	Sell	$283.96K
Jun 09, 2025	Marshall Robert J. Jr.	CFO and Treasurer	Sell	$762.57K
Jun 05, 2025	Blanchfield Paul	President	Sell	$525.61K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	8
2025 Q1	-	9
2024 Q4	-	6
2024 Q3	-	12
2024 Q2	-	10

LNTH Ownership FAQ

Who Owns Lantheus?

Lantheus shareholders are primarily institutional investors at 4.12%, followed by 2.27% insiders and 93.61% retail investors. The average institutional ownership in Lantheus's industry, Specialty & Generic Drug Manufacturers Stocks, is 2774.71%, which Lantheus falls below.

Who owns the most shares of Lantheus?

Lantheus’s largest shareholders are Blackrock (8.6M shares, 12.50%), Blackrock funding, inc. /de (8.61M shares, 12.40%), and Vanguard group (7.24M shares, 10.43%). Together, they hold 35.33% of Lantheus’s total shares outstanding.

Does Blackrock own Lantheus?

Yes, BlackRock owns 12.50% of Lantheus, totaling 8.6M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 690.17M$. In the last quarter, BlackRock increased its holdings by 163.6K shares, a 1.94% change.

Who is Lantheus’s biggest shareholder by percentage of total assets invested?

Resolute capital asset partners is Lantheus’s biggest shareholder by percentage of total assets invested, with 7.52% of its assets in 136.9K Lantheus shares, valued at 13.36M$.

Who is the top mutual fund holder of Lantheus shares?

iShares Core S&P Mid-Cap ETF is the top mutual fund holder of Lantheus shares, with 3.26% of its total shares outstanding invested in 2.25M Lantheus shares.

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