13F Insight
DOSSIER · 13F Holders · Q2 2026

ALKERMES PLC

441 institutions still hold ALKERMES PLC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G01767105·441 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$5.8B
visible holders
Holders
441
filers reporting
Concentration
26.45%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

441 institutions reported ALKERMES PLC in Q2 2026. BlackRock, Inc. leads at 26.4% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$1.5B29.2M0.02%Q2 202602
Vanguard Portfolio Management
CIK 0002100121· Index
$497M9.5M0.02%Q2 202603
STATE STREET CORP
CIK 0000093751
$480M9.2M0.01%Q2 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$394M7.5M0.01%Q2 202605
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$339M6.5M0.47%Q2 202606
BAKER BROS. ADVISORS LP
CIK 0001263508
$280M10.0M1.64%Q4 202507
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$235M4.5M0.01%Q2 202608
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$220M4.2M0.04%Q2 202609
Deep Track Capital, LP
CIK 0001856083
$210M4.0M3.05%Q2 202610
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$207M4.0M0.09%Q2 202611
Holocene Advisors, LP
CIK 0001700574
$207M4.0M0.47%Q2 202612
PRICE T ROWE ASSOCIATES INC /MD/
CIK 0000080255
$165M4.7M0.02%Q1 202613
Commodore Capital LP
CIK 0001831942
$157M3.0M9.36%Q2 202614
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$147M2.8M0.03%Q2 202615
PRIMECAP MANAGEMENT CO/CA/
CIK 0000763212
$132M2.5M0.08%Q2 202616
FIRST TRUST ADVISORS LP
CIK 0001125816· Index
$127M2.4M0.07%Q2 202617
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$122M2.3M0.02%Q2 202618
Nuveen, LLC
CIK 0001871926
$122M2.3M0.03%Q2 202619
NORGES BANK
CIK 0001374170· Sovereign
$113M2.2M0.01%Q2 202620
GOLDMAN SACHS GROUP INC
CIK 0000886982
$106M2.0M0.01%Q2 2026
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