Lantheus Ownership | Who Owns Lantheus?

Overview Forecast RevenueFinancials Chart Transcripts

Lantheus Ownership Summary

Lantheus is owned by 27.89% institutional investors, 2.03% insiders, and 70.08% 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 3.44% of its assets in Lantheus shares.

LNTH Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Lantheus	27.89%	2.03%	70.08%
Sector	Healthcare Stocks	35.58%	11.87%	52.55%
Industry	Specialty & Generic Drug Manufacturers Stocks	20.67%	13.90%	65.43%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	8.60M	12.50%	$690.17M
Blackrock funding, inc. /de	8.18M	12.13%	$620.70M
Vanguard group	6.70M	9.96%	$445.84M
Farallon capital management	5.58M	8.27%	$423.51M
Janus henderson group	4.77M	7.08%	$362.17M
Fmr	4.63M	6.86%	$350.92M
State street	2.43M	3.60%	$184.30M
American century companies	1.78M	2.64%	$135.10M
Geode capital management	1.77M	2.62%	$133.97M
Morgan stanley	1.65M	2.44%	$124.88M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Sarissa capital management lp	166.92K	8.03%	$12.66M
Summit street capital management	415.47K	4.46%	$31.51M
Polaris capital management	617.00K	3.83%	$46.80M
Brigade capital management, lp	363.75K	3.42%	$27.59M
Reinhart partners	1.56M	3.41%	$118.70M
Private capital management	357.64K	2.70%	$27.13M
Lion point capital, lp	5.50K	2.49%	$417.18K
Farallon capital management	5.58M	2.41%	$423.51M
Expect equity	32.07K	2.33%	$2.43M
Villanova investment management	23.23K	1.81%	$1.76M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	1.14M	0.01%	1.14M
American century companies	1.78M	0.07%	1.01M
Brown advisory	687.61K	0.09%	687.61K
Wellington management group llp	768.85K	0.01%	652.48K
Healthcare of ontario pension plan trust fund	598.86K	0.07%	522.68K

Top Sellers

Holder	Shares	% Assets	Change
Westfield capital management co lp	-	-	-1.50M
Macquarie group	-	-	-1.04M
Janus henderson group	4.77M	0.18%	-932.41K
Freestone grove partners lp	-	-	-608.53K
Lord, abbett	-	-	-431.11K

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	1.14M	0.01%	1.14M	$76.20M
Brown advisory	687.61K	0.09%	687.61K	$52.15M
Boston partners	470.66K	0.04%	470.66K	$35.72M
Vanguard fiduciary trust	458.98K	0.01%	458.98K	$34.81M
Longaeva partners	383.94K	1.08%	383.94K	$29.12M

Sold Out

Holder	Change
Claris advisors, llc / mo /	-1.00
True wealth design	-1.00
Manchester capital management	-1.00
State of wyoming	-1.00
Harbor investment advisory	-1.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	219	-45.39%	18,820,727	-72.86%	27	0.26%	114	-37.70%	68	-56.69%
Dec 31, 2025	139	-67.97%	11,018,815	-84.63%	16	0.15%	56	-69.40%	56	-69.40%
Sep 30, 2025	181	-63.73%	17,455,107	-78.58%	25	0.18%	68	-72.13%	87	-49.71%
Jun 30, 2025	487	-9.81%	82,059,623	4.11%	119	0.91%	238	-14.70%	170	-6.59%
Mar 31, 2025	27	-94.65%	2,832,340	-96.22%	4	0.04%	7	-97.29%	14	-91.76%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Mid-Cap ETF	2.24M	3.44%	-1.14K
Vanguard US Total Market Shares ETF	2.22M	3.24%	1.63K
Vanguard Total Stock Mkt Idx Inv	2.06M	3.17%	5.59K
Avantis US Small Cap Value ETF	1.61M	2.48%	-
iShares Russell 2000 ETF	1.54M	2.36%	12.97K
Vanguard Small Cap Index	1.49M	2.29%	-3.25K
Carmignac Investissement A EUR Acc	1.25M	1.92%	-100.00K
Janus Inst Mid Cap Growth CF	1.13M	1.74%	-
Janus Henderson Enterprise D	1.13M	1.74%	-
Janus Henderson US SMID Cap Growth MA	1.00M	1.45%	1.00M

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 19, 2025	PATEL RAJIV A	Member of a Group Owning 10%	Sell	$2.27M
Aug 20, 2025	PATEL RAJIV A	Member of a Group Owning 10%	Sell	$188.94M
Aug 20, 2025	FARALLON PARTNERS L L C/CA	Member of a Group Owning 10%	Sell	$188.94M
Aug 19, 2025	FARALLON PARTNERS L L C/CA	Member of a Group Owning 10%	Sell	$2.27M
Aug 13, 2025	Blanchfield Paul	President	Sell	$163.92K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	-	-
2025 Q4	-	-
2025 Q3	-	5
2025 Q2	-	9
2025 Q1	-	9

LNTH Ownership FAQ

Who Owns Lantheus?

Lantheus shareholders are primarily institutional investors at 27.89%, followed by 2.03% insiders and 70.08% retail investors. The average institutional ownership in Lantheus's industry, Specialty & Generic Drug Manufacturers Stocks, is 20.67%, which Lantheus exceeds.

Who owns the most shares of Lantheus?

Lantheus’s largest shareholders are Blackrock (8.6M shares, 12.50%), Blackrock funding, inc. /de (8.18M shares, 12.13%), and Vanguard group (6.7M shares, 9.96%). Together, they hold 34.59% 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?

Sarissa capital management lp is Lantheus’s biggest shareholder by percentage of total assets invested, with 8.03% of its assets in 166.92K Lantheus shares, valued at 12.66M$.

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 3.44% of its total shares outstanding invested in 2.24M Lantheus shares.

Try Tickergate Pro Free

Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)

Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis

Discover trending investment themes
Find your next best investment
Research stocks using tools