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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 8 sales; 425 institutions reported holding it in 13F filings for Q2 2026, worth $9.32B in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding Alkermes plc. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025All holders in Q2 2025

13F holders of ALKS: Q2 2025 compared with Q3 2025
MeasureQ2 2025Of which not filed for Q3 2025Q3 2025Change
Holders3535358+10
Shares169.2M1.91M169.6M+2.28M (+1.4%)
Value$4.84B$54.6M$5.09B+$301.2M (+6.3%)

5 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (46)

Institutions that held Alkermes plc. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to ALKS in Q3 2025
InstitutionSharesValue% of portfolio
Virginia Retirement Systems Et Al901,333$27.0M0.18%
Sio Capital Management, LLC674,840$20.2M5.12%
Opaleye Management Inc.450,000$13.5M1.91%
AXA Investment Managers S.A.236,897$7.11M0.02%
Silverarc Capital Management, LLC180,513$5.42M0.78%
Rock Springs Capital Management LP106,537$3.20M0.19%
Eagle Health Investments LP81,800$2.45M0.64%
Diadema Partners LP72,079$2.16M1.51%
Tudor Investment Corp Et Al56,383$1.69M0.01%
XTX Topco Ltd44,628$1.34M0.07%
Omers Administration Corp29,500$885.0K0.01%
Entropy Technologies, LP23,291$698.7K0.05%
Empirical Financial Services, LLC d.b.a. Empirical Wealth Management21,081$632.4K0.01%
Summit Global Investments19,938$598.0K0.03%
HRT Financial LP18,277$548.0K0.00%
Catalytic Wealth RIA, LLC18,041$541.2K0.02%
CIBC Bancorp USA Inc.17,296$518.9K0.00%
Round Rock Advisors, LLC16,590$497.7K0.08%
Persistent Asset Partners Ltd16,541$496.2K0.36%
LSV Asset Management14,800$444.0K0.00%
Simplex Trading, LLC14,667$440.0K0.01%
Marex Group plc14,100$423.0K0.01%
Vinva Investment Management Ltd9,259$408.9K0.01%
CAPROCK Group, Inc.11,409$330.5K0.01%
Credit Agricole S A9,350$280.5K0.00%
Bayesian Capital Management, LP8,074$242.2K0.05%
Sequoia Financial Advisors, LLC7,793$233.8K0.00%
Swiss Life Asset Management Ltd7,373$221.2K0.00%
Moors & Cabot, Inc.6,777$203.3K0.01%
GW Henssler & Associates Ltd6,680$200.4K0.01%
Bellevue Group AG6,594$197.8K0.00%
Rockefeller Capital Management L.P.2,157$64.7K0.00%
Walleye Capital LLC1,563$46.9K0.00%
Johnson Financial Group, Inc.1,026$30.8K0.00%
Quent Capital, LLC678$20.3K0.00%
Advisory Services Network, LLC658$19.7K0.00%
Salomon & Ludwin, LLC577$17.9K0.00%
Wealthspire Advisors, LLC527$15.8K0.00%
Root Financial Partners, LLC351$10.5K0.00%
Davis Capital Management203$6.09K0.00%
Northwestern Mutual Wealth Management Co116$3.48K0.00%
Rossby Financial, LCC21$6440.00%
Bear Mountain Capital, Inc.14$4400.00%
Montag A & Associates Inc11$3300.00%
Transamerica Financial Advisors, Inc.8$2400.00%
Cloud Capital Management, LLC26$00.00%

Sold out (36)

Institutions that held Alkermes plc. at the end of Q2 2025 and filed for Q3 2025 without it.

Not filed for Q3 2025 yet (5)

Institutions that held Alkermes plc. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ALKS in Q2 2025 that haven't filed for Q3 2025
InstitutionShares, Q2 2025Value, Q2 2025
Norges Bank1,863,895$53.3M
CIBC World Markets Corp19,992$572.0K
E Fund Management Co., Ltd.18,003$515.1K
Avantax Advisory Services, Inc.8,079$231.1K
Parkworth Wealth Management, Inc.3$86