Alkermes Ownership | Who Owns Alkermes?

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Alkermes Ownership Summary

Alkermes is owned by 108.34% institutional investors, 1.41% insiders. Blackrock funding, inc. /de is the largest institutional shareholder, holding 17.59% of ALKS shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 6.05% of its assets in Alkermes shares.

ALKS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Alkermes	108.34%	1.41%	-9.74%
Sector	Healthcare Stocks	50.62%	12.41%	36.97%
Industry	Specialty & Generic Drug Manufacturers Stocks	35.37%	14.85%	49.78%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	29.24M	17.59%	$1.53B
Blackrock	29.11M	17.33%	$701.49M
Vanguard group	18.01M	10.91%	$503.85M
Baker bros. advisors lp	10.01M	6.02%	$524.59M
State street	9.16M	5.51%	$479.97M
Vanguard capital management	7.52M	4.52%	$393.75M
Price t rowe associates inc /md/	6.74M	4.05%	$353.00M
Renaissance	6.46M	3.89%	$338.52M
Geode capital management	4.48M	2.69%	$234.66M
Dimensional fund advisors lp	4.19M	2.52%	$219.79M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Commodore capital lp	3.00M	9.36%	$157.19M
Bain capital life sciences investors	1.94M	6.04%	$101.54M
Artia global partners lp	448.96K	4.34%	$23.52M
Prosight management, lp	394.39K	3.56%	$20.66M
Knott david m jr	121.76K	3.37%	$6.38M
Deep track capital, lp	4.00M	3.05%	$209.58M
Healthinvest partners ab	213.33K	3.01%	$11.18M
Bvf inc/il	2.15M	2.89%	$112.90M
Bioimpact capital	549.26K	2.70%	$16.48M
Affinity asset advisors	1.13M	2.66%	$58.94M

Top Buyers

Holder	Shares	% Assets	Change
Sixth street partners management company	2.34M	0.02%	2.34M
Norges bank	2.16M	0.01%	2.16M
Price t rowe associates inc /md/	6.74M	0.04%	2.07M
Adage capital partners gp	1.37M	0.10%	1.37M
Bain capital life sciences investors	1.94M	6.04%	1.33M

Top Sellers

Holder	Shares	% Assets	Change
Jpmorgan chase	262.72K	0.00%	-3.84M
Hardman johnston global advisors	-	-	-2.67M
American century companies	3.95M	0.09%	-2.12M
Camber capital management lp	-	-	-1.50M
Arrowstreet capital, limited partnership	-	-	-1.45M

New Positions

Holder	Shares	% Assets	Change	Value
Sixth street partners management company	2.34M	0.02%	2.34M	$122.35M
Norges bank	2.16M	0.01%	2.16M	$113.01M
Adage capital partners gp	1.37M	0.10%	1.37M	$71.68M
Summit partners public asset management	950.23K	0.88%	950.23K	$49.79M
Frontier capital management	659.56K	0.32%	659.56K	$34.56M

Sold Out

Holder	Change
Financial gravity asset management	-1.00
Mather group, llc.	-2.00
Curio wealth	-3.00
Vermillion wealth management	-7.00
Financial synergies wealth advisors	-9.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	434	7.96%	180,048,790	2.16%	108	0.95%	230	15.00%	136	-8.11%
Mar 31, 2026	387	3.48%	173,625,031	-3.72%	105	0.88%	192	-4.48%	143	14.40%
Dec 31, 2025	109	-70.05%	28,066,494	-83.45%	17	0.16%	61	-68.88%	32	-75.94%
Sep 30, 2025	135	-62.60%	35,434,318	-79.06%	21	0.20%	61	-69.19%	61	-48.74%
Jun 30, 2025	355	-6.58%	168,942,978	-0.75%	102	0.94%	194	3.19%	118	-10.61%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	10.15M	6.05%	-3.92K
Vanguard Total Stock Mkt Idx Inv	5.30M	3.18%	-4.37K
Vanguard US Total Market Shares ETF	5.16M	3.17%	-174.71K
Vanguard MStar Total Stk Mkt Idx Invest	5.32M	3.17%	16.52K
Vanguard Morn Total Stk Mkt Idx Investor	5.30M	3.16%	-4.37K
Lord Abbett Floating Rate I	4.68M	2.81%	4.68M
iShares Russell 2000 ETF	4.24M	2.53%	-75.36K
Vanguard Small Cap Index	3.83M	2.28%	10.01K
Pacer US Small Cap Cash Cows 100 ETF	2.98M	1.84%	-21.71K
T. Rowe Price U.S. Mid-Cap Val Eq Tr-Z	2.64M	1.62%	-69.71K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Sep 01, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	Sell	$422.87K
Aug 17, 2026	Nichols Christian Todd	SVP, Chief Commercial Officer	Sell	$32.97K
Aug 17, 2026	Nichols Christian Todd	SVP, Chief Commercial Officer	Sell	$339.97K
Aug 03, 2026	snyderman nancy lynn MD	-	Sell	$2.24M
Aug 03, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	Sell	$437.22K

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	9
2026 Q2	-	8
2026 Q1	-	11
2025 Q4	-	4
2025 Q3	-	-

ALKS Ownership FAQ

Who Owns Alkermes?

Alkermes shareholders are primarily institutional investors at 108.34%, followed by 1.41% insiders and -9.75% retail investors. The average institutional ownership in Alkermes's industry, Specialty & Generic Drug Manufacturers Stocks, is 35.37%, which Alkermes exceeds.

Who owns the most shares of Alkermes?

Alkermes’s largest shareholders are Blackrock funding, inc. /de (29.24M shares, 17.59%), Blackrock (29.11M shares, 17.33%), and Vanguard group (18.01M shares, 10.91%). Together, they hold 45.83% of Alkermes’s total shares outstanding.

Does Blackrock own Alkermes?

Yes, BlackRock owns 17.33% of Alkermes, totaling 29.11M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 701.49M$. In the last quarter, BlackRock decreased its holdings by -60.933K shares, a -0.21% change.

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

Commodore capital lp is Alkermes’s biggest shareholder by percentage of total assets invested, with 9.36% of its assets in 3M Alkermes shares, valued at 157.18M$.

Who is the top mutual fund holder of Alkermes shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of Alkermes shares, with 6.05% of its total shares outstanding invested in 10.15M Alkermes shares.

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