Alkermes Ownership | Who Owns Alkermes?

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Alkermes Ownership Summary

Alkermes is owned by 103.55% institutional investors, 1.48% insiders. Blackrock is the largest institutional shareholder, holding 17.33% of ALKS shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.94% of its assets in Alkermes shares.

ALKS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Alkermes	103.55%	1.48%	-5.04%
Sector	Healthcare Stocks	279.18%	10.62%	-189.80%
Industry	Biotech Stocks	63.96%	10.74%	25.30%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	29.11M	17.33%	$701.49M
Blackrock funding, inc. /de	27.85M	17.05%	$801.05M
Vanguard group	18.50M	11.32%	$531.95M
Price t rowe associates inc /md/	12.26M	7.50%	$352.50M
State street	8.81M	5.40%	$253.52M
Rtw investments, lp	7.56M	4.63%	$217.36M
Wellington management group llp	7.01M	4.29%	$201.68M
Renaissance	5.48M	3.35%	$157.57M
Baker bros. advisors lp	4.18M	2.56%	$120.27M
Geode capital management	3.82M	2.34%	$109.85M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Commodore capital lp	2.30M	4.85%	$66.15M
Affinity asset advisors	1.10M	4.24%	$31.64M
Healthinvest partners ab	266.50K	3.64%	$7.67M
Allostery investments lp	120.00K	3.60%	$3.45M
Rtw investments, lp	7.56M	3.29%	$217.36M
Stempoint capital lp	416.97K	2.99%	$11.99M
Krensavage asset management	257.55K	2.85%	$6.21M
Hudson portfolio management	50.58K	1.43%	$1.45M
Palo alto investors lp	289.31K	1.29%	$8.32M
Baker bros. advisors lp	4.18M	1.28%	$120.27M

Top Buyers

Holder	Shares	% Assets	Change
Avoro capital advisors	2.45M	1.00%	2.45M
Norges bank	1.97M	0.01%	1.97M
Rtw investments, lp	7.56M	3.29%	903.80K
Nuveen asset management	1.66M	0.01%	867.49K
Jpmorgan chase	889.47K	0.00%	529.96K

Top Sellers

Holder	Shares	% Assets	Change
Wellington management group llp	7.01M	0.04%	-5.65M
Deep track capital, lp	-	-	-3.50M
Hardman johnston global advisors	-	-	-2.67M
Camber capital management lp	-	-	-1.50M
Armistice capital	-	-	-1.45M

New Positions

Holder	Shares	% Assets	Change	Value
Avoro capital advisors	2.45M	1.00%	2.45M	$70.46M
Norges bank	1.97M	0.01%	1.97M	$56.68M
Raymond james financial	427.42K	0.00%	427.42K	$12.29M
Mesirow institutional investment management	376.87K	0.83%	376.87K	$10.84M
Holocene advisors, lp	257.90K	0.02%	257.90K	$7.42M

Sold Out

Holder	Change
Financial gravity asset management	-1.00
Harbor investment advisory	-1.00
Mather group, llc.	-2.00
Financial synergies wealth advisors	-9.00
Mendota financial group	-14.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2025	377	7.41%	169,214,033	1.17%	103	0.99%	185	6.94%	132	7.32%
Dec 31, 2024	341	-	166,201,187	-5.94%	101	0.87%	167	-3.47%	121	2.54%
Sep 30, 2024	339	3.99%	176,619,359	-1.51%	108	0.95%	171	-2.29%	117	7.34%
Jun 30, 2024	320	-6.16%	179,232,053	3.05%	106	0.97%	172	-	109	-9.17%
Mar 31, 2024	341	10.36%	173,933,414	-0.77%	104	0.95%	172	-3.91%	120	42.86%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	9.79M	5.94%	-5.01K
Vanguard US Total Market Shares ETF	5.16M	3.17%	-174.71K
Vanguard Total Stock Mkt Idx Inv	5.20M	3.15%	49.52K
T. Rowe Price US Mid-Cap Value Equity	4.97M	3.06%	-228.19K
T. Rowe Price Mid-Cap Value	4.97M	3.06%	-224.35K
iShares Russell 2000 ETF	4.13M	2.51%	2.02K
Vanguard Small Cap Index	4.08M	2.48%	23.55K
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
T. Rowe Price U.S. Mid-Cap Val Eq Tr-D	2.64M	1.60%	-69.71K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jun 10, 2025	Nichols Christian Todd	SVP, Chief Commercial Officer	Sell	$103.65K
Jun 09, 2025	Nichols Christian Todd	SVP, Chief Commercial Officer	Sell	$106.49K
Feb 28, 2025	Parisi Samuel Joseph	VP, Finance (Interim PAO)	Sell	$65.89K
Feb 25, 2025	Parisi Samuel Joseph	VP, Finance (Interim PAO)	Sell	$131.98K
Feb 20, 2025	Parisi Samuel Joseph	VP, Finance (Interim PAO)	Sell	$47.36K

Insider Transactions Trends

Date	Buy	Sell
2025 Q2	-	2
2025 Q1	-	8
2024 Q4	-	7
2024 Q3	-	-
2024 Q2	-	-

ALKS Ownership FAQ

Who Owns Alkermes?

Alkermes shareholders are primarily institutional investors at 103.55%, followed by 1.48% insiders and -5.03% retail investors. The average institutional ownership in Alkermes's industry, Biotech Stocks , is 63.96%, which Alkermes exceeds.

Who owns the most shares of Alkermes?

Alkermes’s largest shareholders are Blackrock (29.11M shares, 17.33%), Blackrock funding, inc. /de (27.85M shares, 17.05%), and Vanguard group (18.5M shares, 11.32%). Together, they hold 45.70% 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 4.85% of its assets in 2.3M Alkermes shares, valued at 66.15M$.

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 5.94% of its total shares outstanding invested in 9.79M Alkermes shares.

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