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Alkermes plc.

ALKS
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001520262

In the last 90 days, Alkermes plc. insiders filed 0 open-market purchases and 7 sales; 425 institutions reported holding it in 13F filings for Q2 2026, worth $9.32B in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding Alkermes plc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of ALKS: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders3666390+30
Shares180.4M20.0M176.6M+16.2M (+10.1%)
Value$5.05B$558.6M$6.22B+$1.73B (+38.5%)

6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (76)

Institutions that held Alkermes plc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to ALKS in Q1 2026
InstitutionSharesValue% of portfolio
Vanguard Portfolio Management LLC9,511,112$336.3M0.02%
Vanguard Capital Management LLC7,427,397$262.6M0.01%
Holocene Advisors, LP2,317,326$81.9M0.20%
BVF Inc2,000,000$70.7M2.25%
Vanguard Fiduciary Trust Co1,129,236$39.9M0.01%
Bain Capital Life Sciences Investors, LLC610,000$21.6M1.95%
Prosight Management, LP513,632$18.2M2.98%
Silverarc Capital Management, LLC460,314$16.3M1.92%
Gendell Jeffrey L351,473$12.4M0.17%
Logos Global Management LP350,000$12.4M0.64%
Spruce Street Capital LP317,992$11.2M2.70%
Senator Investment Group LP235,000$8.32M0.38%
ExodusPoint Capital Management, LP204,324$7.22M0.07%
Hudson Bay Capital Management LP173,626$6.14M0.04%
Moore Capital Management, LP158,499$5.60M0.20%
SummitTX Capital, L.P.156,259$5.53M0.18%
Vanguard Asset Management, Ltd136,410$4.82M0.00%
Exome Asset Management LLC84,103$2.97M1.75%
Vanguard Global Advisers, LLC81,642$2.89M0.00%
StemPoint Capital LP80,492$2.85M0.55%
Lumbard & Kellner, LLC52,593$1.86M0.64%
Great Point Partners LLC50,000$1.77M0.43%
Diadema Partners LP50,000$1.77M0.73%
CenterBook Partners LP38,625$1.37M0.07%
Vanguard Investments Australia, Ltd.38,147$1.35M0.00%
Militia Capital Management LLC31,918$1.13M0.25%
Perbak Capital Partners LLP31,185$1.10M0.27%
Allstate Corp29,154$1.03M0.01%
Guggenheim Capital LLC28,649$1.01M0.01%
Persistent Asset Partners Ltd25,563$903.9K0.35%
Seven Fleet Capital Management LP24,170$854.7K0.27%
Caitong International Asset Management Co., Ltd21,290$752.8K0.14%
E Fund Management Co., Ltd.20,920$739.7K0.02%
DRW Securities, LLC20,180$713.6K0.04%
Prelude Capital Management, LLC16,928$598.6K0.05%
Schonfeld Strategic Advisors LLC16,584$586.4K0.00%
Jackson Creek Investment Advisors LLC13,201$467.0K0.14%
Simplex Trading, LLC13,138$464.6K0.01%
Lombard Odier Asset Management (USA) Corp10,232$361.8K0.19%
Ashton Thomas Private Wealth, LLC9,439$333.8K0.01%
Investors Asset Management of Georgia Inc8,600$303.5K0.12%
GTS Securities LLC8,485$300.0K0.01%
CIBC Bancorp USA Inc.8,245$291.5K0.00%
Gallacher Capital Management LLC7,677$271.5K0.10%
Moors & Cabot, Inc.7,117$251.7K0.01%
Brinker Capital Investments, LLC7,104$251.2K0.00%
IMC-Chicago, LLC6,879$243.2K0.00%
Three Arch Wealth Management LLC6,459$228.4K0.04%
GW Henssler & Associates Ltd6,370$225.2K0.01%
Skopos Labs, Inc.6,261$221.4K0.01%
Dutch Asset Corp6,200$219.2K0.15%
FourThought Financial Partners, LLC6,068$214.6K0.02%
M&T Bank Corp5,872$207.9K0.00%
Greenleaf Trust5,792$204.8K0.00%
RHS Financial, LLC5,761$203.7K0.10%
ABS Direct Equity Fund LLC4,900$167.4K0.13%
Advisory Services Network, LLC3,009$106.4K0.00%
Nomura Asset Management Co Ltd1,000$35.4K0.00%
E Fund Management (Hong Kong) Co., Ltd.503$17.8K0.01%
Twin Peaks Wealth Advisors, LLC431$15.2K0.00%
Intentional Wealth Strategies, LLC156$5.52K0.01%
Zions Bancorporation, National Association63$2.23K0.00%
Marquette Asset Management, LLC36$1.27K0.00%
CVA Family Office, LLC32$1.13K0.00%
Innovative Asset Advisors Group, LLC32$1.13K0.00%
UMA Financial Services, Inc.19$6720.00%
Basecamp Wealth Advisors LLC17$6010.00%
Frazier Financial Advisors, LLC10$3540.00%
Vermillion Wealth Management, Inc.7$2480.00%
Prestige Wealth Management Group LLC7$2480.00%
Curio Wealth, LLC3$1060.00%
Hughes Financial Services, LLC2$710.00%
Transamerica Financial Advisors, Inc.1$350.00%
Raffa Wealth Management, LLC1$350.00%
Sunbelt Securities, Inc.1$350.00%
Activest Wealth Management1$350.00%

Sold out (46)

Institutions that held Alkermes plc. at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of ALKS in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Arrowstreet Capital, Limited Partnership1,450,841$40.6M
Two Sigma Advisers, LP562,587$15.7M
Opaleye Management Inc.490,000$13.7M
Qube Research & Technologies Ltd276,558$7.74M
Voloridge Investment Management, LLC273,158$7.64M
TrimTabs Asset Management, LLC219,495$6.14M
Hussman Strategic Advisors, Inc.105,000$2.94M
Sio Capital Management, LLC95,353$2.67M
Tudor Investment Corp Et Al82,720$2.31M
Y-Intercept (Hong Kong) Ltd79,336$2.22M
Campbell & CO Investment Adviser LLC73,134$2.05M
Atom Investors LP65,706$1.84M
Globeflex Capital L P60,560$1.69M
Oliver Luxxe Assets LLC56,031$1.57M
Millennium Management LLC54,642$1.53M
TD Asset Management Inc46,184$1.29M
Vinva Investment Management Ltd26,520$1.10M
Bridgeway Capital Management, LLC31,200$873.0K
Aquatic Capital Management LLC28,411$794.9K
Mirabella Financial Services LLP27,462$768.4K
Dark Forest Capital Management LP27,203$761.1K
NLB Skladi, upravljanje premozenja, d.o.o.27,000$755.5K
Oxford Asset Management LLP26,767$748.9K
Lighthouse Investment Partners, LLC24,759$692.8K
Moran Wealth Management, LLC20,651$577.8K
Unique Wealth Strategies, LLC20,534$574.5K
Graham Capital Management, L.P.19,646$549.7K
Inceptionr LLC18,913$529.2K
Financiere des Professionnels - Fonds d,investissement inc.15,607$436.7K
Algert Global LLC14,330$401.0K
Swiss Life Asset Management Ltd13,834$387.1K
Magnetar Financial LLC13,701$383.4K
XTX Topco Ltd12,322$344.8K
Group One Trading, L.P.9,426$263.7K
Quantbot Technologies LP7,910$221.3K
Avanza Fonder AB7,327$205.0K
MQS Management LLC7,252$202.9K
St Germain D J Co Inc6,180$172.9K
Horizon Investments, LLC3,296$92.2K
Leonteq Securities AG2,515$70.4K
Clearstead Advisors, LLC174$4.87K
Mark Sheptoff Financial Planning, LLC150$4.00K
Rakuten Securities, Inc.25$700
Glen Eagle Advisors, LLC20$560
Flagship Harbor Advisors, LLC10$280
Avion Wealth21$0

Not filed for Q1 2026 yet (6)

Institutions that held Alkermes plc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ALKS in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc18,007,364$503.8M
Norges Bank1,945,734$54.4M
CIBC World Markets Corp10,734$300.3K
EMC Capital Management2,064$58.0K
CIBC Private Wealth Group, LLC45$1.26K
Global Retirement Partners, LLC18$504