13F

Stock

Alkermes plc.

ALKS · held by 367 managers

Reported value

$4.73B

Holders

367

+5 new · −3 exited

Holders’ est. mark

−$16.5M

Price effect on 11 books still in the name

Largest holder

$791.1M

BlackRock, Inc.

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
BlackRock, Inc.28.3M$791.1MHeld
Vanguard18M$503.8MHeld
BAKER BROS. ADVISORS LP10M$280.1MHeld
State Street9.47M$265.1MHeld
Renaissance Technologies6.67M$186.6MHeld
AMERICAN CENTURY COMPANIES INC5.96M$166.7MHeld
JPMORGAN CHASE & CO5.18M$145.1MHeld
DIMENSIONAL FUND ADVISORS LP4.41M$123.5MHeld
GEODE CAPITAL MANAGEMENT, LLC4.08M$114.2MHeld
Commodore Capital LP3.55M$99.3MHeld
WELLINGTON MANAGEMENT GROUP LLP3.02M$84.5MHeld
PRIMECAP MANAGEMENT CO/CA/2.56M$71.7MHeld
UBS Group AG2.54M$71.2MHeld
Nuveen, LLC2.43M$67.9MHeld
GOLDMAN SACHS GROUP INC2.27M$63.4MHeld
CHARLES SCHWAB INVESTMENT MANAGEMENT INC2.15M$60.2MHeld
Deep Track Capital, LP2M$56MHeld
NORGES BANK1.95M$54.4M−$9.66MCut−$8.84M
LOOMIS SAYLES & CO L P1.9M$53.2MHeld
MORGAN STANLEY1.89M$52.8M−$3.13MAdded$6.29M
RTW INVESTMENTS, LP1.67M$46.8MHeld
NORTHERN TRUST CORP1.65M$46.3MHeld
Pictet Asset Management Holding SA1.48M$41.3MHeld
FIRST TRUST ADVISORS LP1.45M$40.7MHeld
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP1.45M$40.6MHeld
Avoro Capital Advisors LLC1.4M$39.2MHeld
Fidelity1.36M$37.9MHeld
Artisan Partners Limited Partnership1.35M$37.7MHeld
BANK OF AMERICA CORP /DE/1.33M$37.3M−$2.21MAdded$4.41M
Soleus Capital Management, L.P.1.32M$37MHeld
TWO SIGMA INVESTMENTS, LP1.21M$34MHeld
Citadel1.2M$33.5MHeld
Squarepoint Ops LLC1.1M$30.7MHeld
Bank of New York Mellon Corp1.07M$30.1MHeld
Affinity Asset Advisors, LLC1M$28MHeld
VIRGINIA RETIREMENT SYSTEMS ET Al976.5K$27.3MHeld
PRINCIPAL FINANCIAL GROUP INC947.6K$26.5MHeld
PANAGORA ASSET MANAGEMENT INC929K$26MHeld
D. E. Shaw & Co., Inc.911.3K$25.5MHeld
Driehaus Capital Management LLC797K$22.3MHeld
Frazier Life Sciences Management, L.P.700.6K$19.6MHeld
Balyasny Asset Management L.P.679.6K$19MHeld
Pacer Advisors, Inc.677.5K$18.9MHeld
PUBLIC SECTOR PENSION INVESTMENT BOARD671.2K$18.8MHeld
SEGALL BRYANT & HAMILL, LLC615.3K$17.2MHeld
BARCLAYS PLC565K$15.8M−$1.12MCut−$889.9K
TWO SIGMA ADVISERS, LP562.6K$15.7MHeld
Woodline Partners LP558.6K$15.6MHeld
Invesco Ltd.538.7K$15.1MHeld
AMERIPRISE FINANCIAL INC531.4K$14.9MHeld
MetLife Investment Management, LLC530.4K$14.8MHeld
Icahn Capital514.3K$14.4MHeld
VOYA INVESTMENT MANAGEMENT LLC501.8K$14MHeld
Opaleye Management Inc.490K$13.7MHeld
RHUMBLINE ADVISERS439.2K$12.3MHeld
BNP PARIBAS FINANCIAL MARKETS430.3K$12MHeld
Legal & General Group Plc429.5K$12MHeld
GLENMEDE TRUST CO NA412.9K$11.6MHeld
VICTORY CAPITAL MANAGEMENT INC402.6K$11.3MHeld
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC394.9K$11MHeld
Fisher Asset Management, LLC390.5K$10.9MHeld
RICE HALL JAMES & ASSOCIATES, LLC379.5K$10.6MHeld
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.361.4K$10.1MHeld
Allianz Asset Management GmbH347.3K$9.72MHeld
Bridgewater344.5K$9.64MHeld
RAYMOND JAMES FINANCIAL INC328.2K$9.14MHeld
ROYAL BANK OF CANADA325.5K$9.11MHeld
California Public Employees Retirement System324.6K$9.08MHeld
Man Group plc312.5K$8.74MHeld
CANADA PENSION PLAN INVESTMENT BOARD310.6K$8.69MHeld
Swiss National Bank309.2K$8.65MHeld
Edgestream Partners, L.P.291.3K$8.15MHeld
Robeco Institutional Asset Management B.V.285.7K$7.99MHeld
Qube Research & Technologies Ltd276.6K$7.74MHeld
VOLORIDGE INVESTMENT MANAGEMENT, LLC273.2K$7.64MHeld
PEREGRINE CAPITAL MANAGEMENT LLC254.3K$7.12MHeld
Palo Alto Investors LP242.6K$6.79MHeld
Atle Fund Management AB242.5K$6.78MHeld
WELLS FARGO & COMPANY/MN233K$6.52MHeld
Abacus FCF Advisors LLC219.5K$6.14MHeld
ALLIANCEBERNSTEIN L.P.215.9K$6.04MHeld
Rafferty Asset Management, LLC203.3K$5.69MHeld
PRUDENTIAL FINANCIAL INC194.5K$5.44MHeld
Universal- Beteiligungs- und Servicegesellschaft mbH194.5K$5.44MHeld
FRANKLIN RESOURCES INC192.8K$5.39MHeld
SEI INVESTMENTS CO190.7K$5.34MHeld
WEDGE CAPITAL MANAGEMENT L L P/NC172.3K$4.82MHeld
MARTINGALE ASSET MANAGEMENT L P170.3K$4.76MHeld
INTECH INVESTMENT MANAGEMENT LLC159.6K$4.47MHeld
Russell Investments Group, Ltd.157.4K$4.39MHeld
NEUBERGER BERMAN GROUP LLC152.8K$4.27MHeld
CAPITAL FUND MANAGEMENT S.A.150.8K$4.22MHeld
NEW YORK STATE COMMON RETIREMENT FUND149.3K$4.18MHeld
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM148.8K$4.16MHeld
JANUS HENDERSON GROUP PLC145.8K$4.08MHeld
Tetragon Partners GP Ltd141.2K$3.95MHeld
Rock Springs Capital Management LP139.2K$3.9MHeld
ALPS ADVISORS INC135.4K$3.79MHeld
DEUTSCHE BANK AG\134.5K$3.76MHeld
Rhenman & Partners Asset Management AB133.3K$3.73MHeld
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM131.7K$3.68MHeld
DAFNA Capital Management LLC130.2K$3.64MHeld
MARSHALL WACE, LLP129.9K$3.63MHeld
Focus Partners Wealth124K$3.47MHeld
MANUFACTURERS LIFE INSURANCE COMPANY, THE113.7K$3.18MHeld
Assenagon Asset Management S.A.110.3K$3.09MHeld
HUSSMAN STRATEGIC ADVISORS, INC.105K$2.94MHeld
Sio Capital Management, LLC95.4K$2.67MHeld
LOS ANGELES CAPITAL MANAGEMENT LLC86.4K$2.66MHeld
Knott David M Jr95K$2.66MHeld
MACKENZIE FINANCIAL CORP95.4K$2.65MHeld
STATE OF WISCONSIN INVESTMENT BOARD93.2K$2.61MHeld
Illinois Municipal Retirement Fund91.5K$2.56MHeld
O'SHAUGHNESSY ASSET MANAGEMENT, LLC90.6K$2.53MHeld
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.87.3K$2.44MHeld
ZACKS INVESTMENT MANAGEMENT84.4K$2.36MHeld
TUDOR INVESTMENT CORP ET AL82.7K$2.31M−$113.9KAdded$623K
Vident Advisory, LLC82.3K$2.3MHeld
Eagle Health Investments LP81.8K$2.29MHeld
KLP KAPITALFORVALTNING AS81.1K$2.27MHeld
PROFUND ADVISORS LLC80.6K$2.26MHeld
State of Tennessee, Department of Treasury66.4K$2.25MHeld
Y-Intercept (Hong Kong) Ltd79.3K$2.22MHeld
Pathstone Holdings, LLC78.2K$2.19MHeld
Louisiana State Employees Retirement System75.6K$2.12MHeld
CITIGROUP INC73.4K$2.05MHeld
Campbell & CO Investment Adviser LLC73.1K$2.05MHeld
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC72.9K$2.04MHeld
Atom Investors LP65.7K$1.84MHeld
RITHOLTZ WEALTH MANAGEMENT64.1K$1.79MHeld
Entropy Technologies, LP63.7K$1.78MHeld
ADAR1 Capital Management, LLC63.7K$1.78MHeld
Gotham Asset Management, LLC62.5K$1.75MHeld
Empowered Funds, LLC61.2K$1.71MHeld
Creative Planning60.8K$1.7MHeld
JANE STREET GROUP, LLC60.8K$1.7MHeld
GLOBEFLEX CAPITAL L P60.6K$1.69MHeld
Federation des caisses Desjardins du Quebec60K$1.68MHeld
Oliver Luxxe Assets LLC56K$1.57MHeld
SCHRODER INVESTMENT MANAGEMENT GROUP55.5K$1.54MHeld
MILLENNIUM MANAGEMENT LLC54.6K$1.53MHeld
State of New Jersey Common Pension Fund D53.5K$1.5MHeld
YOUSIF CAPITAL MANAGEMENT, LLC46K$1.46MHeld
EXCHANGE TRADED CONCEPTS, LLC50.1K$1.4MHeld
Birchview Capital, LP50K$1.4MHeld
DIVERSIFIED TRUST CO49.1K$1.37MHeld
Zurcher Kantonalbank (Zurich Cantonalbank)49K$1.37MHeld
ROYCE & ASSOCIATES LP48K$1.34MHeld
Engineers Gate Manager LP47.7K$1.34MHeld
VIRTUS ADVISERS, LLC47.7K$1.33M−$96.4KCut−$96.4K
TD Asset Management Inc46.2K$1.29MHeld
STRS OHIO46.1K$1.29MHeld
Marex Group plc44.9K$1.25MNew
LPL Financial LLC44.2K$1.24MHeld
Police & Firemen's Retirement System of New Jersey44.1K$1.24MHeld
ARIZONA STATE RETIREMENT SYSTEM43.6K$1.22MHeld
HSBC HOLDINGS PLC42.8K$1.2MHeld
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS40.9K$1.14MHeld
ENVESTNET ASSET MANAGEMENT INC40.3K$1.13MHeld
Dana Investment Advisors, Inc.39.5K$1.1MHeld
Vinva Investment Management Ltd26.5K$1.1MHeld
Tidal Investments LLC39.1K$1.09MHeld
ProShare Advisors LLC38.9K$1.09MHeld
OREGON PUBLIC EMPLOYEES RETIREMENT FUND37.8K$1.06MHeld
GC Wealth Management RIA, LLC37.4K$1.05MHeld
CAPTRUST FINANCIAL ADVISORS36.8K$1.03MHeld
Hudson Portfolio Management LLC33.5K$937.5KHeld
Jump Financial, LLC32.6K$913KHeld
Amundi32.4K$906.1KHeld
Cerity Partners LLC32.3K$904.6KHeld
BRIDGEWAY CAPITAL MANAGEMENT, LLC31.2K$873KHeld
DNB Asset Management AS30.8K$860.7KHeld
AdvisorShares Investments LLC30.6K$855.6KHeld
Aquatic Capital Management LLC28.4K$794.9KHeld
MIRABELLA FINANCIAL SERVICES LLP27.5K$768.4KNew
DARK FOREST CAPITAL MANAGEMENT LP27.2K$761.1KHeld
NLB Skladi, upravljanje premozenja, d.o.o.27K$755.5KHeld
China Universal Asset Management Co., Ltd.26.9K$752.8KHeld
OXFORD ASSET MANAGEMENT LLP26.8K$748.9KNew
FEDERATED HERMES, INC.26.5K$742.8KHeld
HighVista Strategies LLC26.4K$738.7KHeld
Vontobel Holding Ltd.26K$728.8KHeld
CHOREO, LLC25.4K$706.5KHeld
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management24.8K$694.3KHeld
Lighthouse Investment Partners, LLC24.8K$692.8KHeld
Maryland State Retirement & Pension System24.2K$676KHeld
TEACHER RETIREMENT SYSTEM OF TEXAS23.3K$651.5KHeld
Ensign Peak Advisors, Inc22.8K$638.7KHeld
Allspring Global Investments Holdings, LLC22.1K$623.6KHeld
HORIZON KINETICS ASSET MANAGEMENT LLC22.1K$617.4KHeld
Corient Private Wealth LLC21.9K$611.8KHeld
Walleye Capital LLC21.6K$604.3KHeld
FARALLON CAPITAL MANAGEMENT LLC20.8K$582K−$42KCut−$42K
Wilmington Savings Fund Society, FSB20.8K$581.5KHeld
Moran Wealth Management, LLC20.7K$577.8KHeld
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main20.4K$569.9K−$203Cut−$15.3M
EVOLVE PRIVATE WEALTH, LLC19.7K$552.6KHeld
Graham Capital Management, L.P.19.6K$549.7KHeld
AXS Investments LLC19.5K$545.6K−$39.4KCut−$58.9K
Quantinno Capital Management LP19.4K$543.9KHeld
PSP Research LLC19.3K$539.5KHeld
Cetera Investment Advisers18.9K$529.4KHeld
INCEPTIONR LLC18.9K$529.2KHeld
Round Rock Advisors LLC17.7K$494KHeld
State of Wyoming17.3K$485.1KHeld
AVIVA PLC16.9K$474.1KHeld
TODD ASSET MANAGEMENT LLC16.8K$471.3KHeld
XPONANCE LLC15.8K$443KHeld
Financiere des Professionnels - Fonds d'investissement inc.15.6K$436.7KHeld
OMERS ADMINISTRATION Corp14.9K$417.4KHeld
SUSQUEHANNA INTERNATIONAL GROUP, LLP14.9K$416.1KHeld
Bleakley Financial Group, LLC14.7K$412.2KHeld
BANK OF MONTREAL /CAN/14.4K$401.8KHeld
Vanguard Personalized Indexing Management, LLC14.1K$395KHeld
Swiss Life Asset Management Ltd13.8K$387.1K−$14.9KAdded$165.9K
Magnetar Financial LLC13.7K$383.4KHeld
HighTower Advisors, LLC13.5K$377.6KHeld
Sumitomo Mitsui Trust Group, Inc.13.4K$374.1KHeld
Ameritas Investment Partners, Inc.13.2K$368.5KHeld
QUADRANT CAPITAL GROUP LLC12.9K$361.8KHeld
Crossmark Global Holdings, Inc.12.7K$355KHeld
XTX Topco Ltd12.3K$344.8KHeld
Sanctuary Advisors, LLC12.1K$339.7K−$23.9KCut−$15.1K
Advisors Asset Management, Inc.12.1K$339.7KHeld
Walleye Trading LLC11.5K$323.1KHeld
CIBC WORLD MARKETS CORP10.7K$300.3KHeld
PNC Financial Services Group, Inc.10.3K$288.9KHeld
JAMES INVESTMENT RESEARCH, INC.10.3K$287.4KHeld
EVERGREEN CAPITAL MANAGEMENT LLC10.2K$284.8KHeld
GROUP ONE TRADING LLC9.43K$263.7KHeld
MERCER GLOBAL ADVISORS INC /ADV9.14K$255.7KHeld
HOHIMER WEALTH MANAGEMENT, LLC9.05K$253.2KHeld
PRICE T ROWE ASSOCIATES INC /MD/9M$251.8KHeld
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC8.69K$250.2KHeld
Sequoia Financial Advisors, LLC8.85K$247.6KHeld
Caprock Group, LLC8.52K$238.3KHeld
CREDIT AGRICOLE S A8.5K$237.8KHeld
Bayforest Capital Ltd8.19K$229.1KHeld
Sterling Capital Management LLC8.15K$228KHeld
Mirae Asset Global Investments Co., Ltd.8.02K$224.5KHeld
New Age Alpha Advisors, LLC8.02K$224.3KHeld
Quantbot Technologies LP7.91K$221.3KHeld
NISA INVESTMENT ADVISORS, LLC7.86K$220KHeld
AUXIER ASSET MANAGEMENT LLC7.65K$214.1KHeld
Bridgefront Capital, LLC7.38K$206.5KHeld
Avanza Fonder AB7.33K$205KHeld
MQS Management LLC7.25K$202.9KHeld
NATIONAL BANK OF CANADA /FI/7.17K$200.5KHeld
Bellevue Group AG6.59K$184.5KHeld
Smartleaf Asset Management LLC6.4K$178KHeld

Who left

Positions as of Q4 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.