Alkermes plc. (ALKS) — Institutional Holders, Q2 2026

426 institutional investment managers reported a ALKS position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $9.3B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← ALKS stock profile

ALKS in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

140

Trimmed

137

Sold out

Biggest buyers

PRICE T ROWE ASSOCIATESAdded · +2,072,752 sh+$108.6M
ADAGE CAPITAL PARTNERS GP, L.L.C.New · +1,368,000 sh+$71.7M
Bain Capital Life Sciences InvestorsAdded · +1,327,938 sh+$69.6M
Holocene AdvisorsAdded · +1,284,146 sh+$67.3M
FRANKLIN RESOURCESAdded · +987,707 sh+$51.8M

Biggest sellers

JPMORGAN CHASETrimmed · -3,839,068 sh-$201.1M
AMERICAN CENTURY COMPANIESTrimmed · -2,117,864 sh-$111.0M
Avoro Capital AdvisorsSold out · -1,200,000 sh-$62.9M
Commodore CapitalTrimmed · -1,200,000 sh-$62.9M
Soleus Capital Management, L.P.Trimmed · -941,612 sh-$49.3M

ALKS 13F holders ranked 1–100 of 426

Institutional investors reporting a position in Alkermes plc. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 29,235,739 sh	29,235,739	$1.5B	0.02%	+3.3%
2	BAKER BROS. ADVISORS#2 · 10,012,267 sh	10,012,267	$524.6M	2.63%	0.0%
3	VANGUARD PORTFOLIO MANAGEMENT#3 · 9,490,818 sh	9,490,818	$497.3M	0.02%	-0.2%
4	STATE STREET#4 · 9,160,575 sh	9,160,575	$480.0M	0.01%	-3.2%
5	VANGUARD CAPITAL MANAGEMENT#5 · 7,515,025 sh	7,515,025	$393.7M	<0.01%	+1.2%
6	PRICE T ROWE ASSOCIATES#6 · 6,737,328 sh	6,737,328	$353.0M	0.04%	+44.4%
7	RENAISSANCE TECHNOLOGIES#7 · 6,460,928 sh	6,460,928	$338.5M	0.47%	+4.9%
8	GEODE CAPITAL MANAGEMENT#8 · 4,477,876 sh	4,477,876	$234.7M	0.01%	+7.1%
9	DIMENSIONAL FUND ADVISORS#9 · 4,194,873 sh	4,194,873	$219.8M	0.04%	-7.2%
10	Deep Track Capital#10 · 4,000,000 sh	4,000,000	$209.6M	3.05%	+11.4%
11	AMERICAN CENTURY COMPANIES#11 · 3,954,239 sh	3,954,239	$207.2M	0.09%	-34.9%
12	Holocene Advisors#12 · 3,601,472 sh	3,601,472	$188.7M	0.43%	+55.4%
13	Commodore Capital#13 · 3,000,000 sh	3,000,000	$157.2M	9.36%	-28.6%
14	WELLINGTON MANAGEMENT GROUP LLP#14 · 2,814,804 sh	2,814,804	$147.5M	0.03%	-5.2%
15	PRIMECAP MANAGEMENT#15 · 2,528,680 sh	2,528,680	$132.5M	0.08%	-0.4%
16	FIRST ADVISORS#16 · 2,421,016 sh	2,421,016	$126.8M	0.07%	-18.5%
17	CHARLES SCHWAB INVESTMENT MANAGEMENT#17 · 2,335,117 sh	2,335,117	$122.3M	0.02%	+4.4%
18	Nuveen#18 · 2,324,197 sh	2,324,197	$121.8M	0.03%	-5.5%
19	NORGES BANK#19 · 2,156,814 sh	2,156,814	$113.0M	0.01%	—
20	BVF#20 · 2,154,704 sh	2,154,704	$112.9M	2.89%	+7.7%
21	GOLDMAN SACHS GROUP#21 · 2,023,984 sh	2,023,984	$106.0M	<0.01%	+7.5%
22	Bain Capital Life Sciences Investors#22 · 1,937,938 sh	1,937,938	$101.5M	6.04%	+217.7%
23	NORTHERN#23 · 1,831,619 sh	1,831,619	$96.0M	0.01%	+7.9%
24	MORGAN STANLEY#24 · 1,751,882 sh	1,751,882	$91.8M	<0.01%	+0.9%
25	RTW INVESTMENTS#25 · 1,672,356 sh	1,672,356	$87.6M	0.75%	0.0%
26	CITADEL ADVISORS#26 · 1,645,101 sh	1,645,101	$86.2M	<0.01%	-26.6%
27	LOOMIS SAYLES & L P#27 · 1,585,518 sh	1,585,518	$83.1M	0.10%	-11.2%
28	ADAGE CAPITAL PARTNERS GP, L.L.C.#28 · 1,368,000 sh	1,368,000	$71.7M	0.10%	New
29	D. E. Shaw#29 · 1,312,031 sh	1,312,031	$68.7M	0.03%	+84.7%
30	DRIEHAUS CAPITAL MANAGEMENT#30 · 1,238,809 sh	1,238,809	$64.9M	0.38%	+56.4%
31	VANGUARD FIDUCIARY#31 · 1,177,945 sh	1,177,945	$61.7M	0.01%	+4.3%
32	FRANKLIN RESOURCES#32 · 1,170,242 sh	1,170,242	$61.3M	0.01%	+541.1%
33	BNP Paribas Asset Management Holding S.A.#33 · 1,159,216 sh	1,159,216	$60.7M	0.06%	+383.7%
34	FMR#34 · 1,134,410 sh	1,134,410	$59.4M	<0.01%	-14.3%
35	Affinity Asset Advisors#35 · 1,125,000 sh	1,125,000	$58.9M	2.66%	-16.7%
36	Bank of New York Mellon#36 · 1,097,282 sh	1,097,282	$57.5M	<0.01%	+5.9%
37	T. Rowe Price Investment Management#37 · 1,090,947 sh	1,090,947	$57.2M	0.04%	+22.0%
38	TWO SIGMA INVESTMENTS#38 · 1,038,311 sh	1,038,311	$54.4M	0.04%	+33.0%
39	Soleus Capital Management, L.P.#39 · 1,029,252 sh	1,029,252	$53.9M	1.86%	-47.8%
40	PRINCIPAL FINANCIAL GROUP#40 · 983,822 sh	983,822	$51.5M	0.03%	+2.7%
41	MARSHALL WACE, LLP#41 · 969,954 sh	969,954	$50.8M	0.04%	-2.9%
42	SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT#42 · 950,234 sh	950,234	$49.8M	0.88%	New
43	BANK OF AMERICA#43 · 918,303 sh	918,303	$48.1M	<0.01%	-24.2%
44	VICTORY CAPITAL MANAGEMENT#44 · 916,709 sh	916,709	$48.0M	0.03%	+196.7%
45	Pictet Asset Management Holding SA#45 · 838,026 sh	838,026	$44.0M	0.04%	-11.1%
46	Artisan Partners Limited Partnership#46 · 831,006 sh	831,006	$43.5M	0.07%	-25.3%
47	PANAGORA ASSET MANAGEMENT#47 · 765,543 sh	765,543	$40.1M	0.12%	-17.9%
48	Frazier Life Sciences Management, L.P.#48 · 700,647 sh	700,647	$36.7M	0.80%	0.0%
49	PUBLIC SECTOR PENSION INVESTMENT BOARD#49 · 677,405 sh	677,405	$35.5M	0.09%	0.0%
50	FRONTIER CAPITAL MANAGEMENT#50 · 659,562 sh	659,562	$34.6M	0.32%	New
51	BNP PARIBAS FINANCIAL MARKETS#51 · 655,140 sh	655,140	$34.3M	0.01%	+24.1%
52	AMERIPRISE FINANCIAL#52 · 630,325 sh	630,325	$33.0M	<0.01%	-15.0%
53	Woodline Partners#53 · 560,282 sh	560,282	$29.4M	0.09%	+0.3%
54	Spruce Street Capital#54 · 543,876 sh	543,876	$28.5M	5.59%	+71.0%
55	MetLife Investment Management#55 · 512,924 sh	512,924	$26.9M	0.12%	+477.3%
56	SEGALL BRYANT & HAMILL#56 · 498,222 sh	498,222	$26.1M	0.31%	-17.9%
57	Artia Global Partners#57 · 448,964 sh	448,964	$23.5M	4.34%	New
58	Invesco Ltd.#58 · 443,107 sh	443,107	$23.2M	<0.01%	-15.5%
59	RAYMOND JAMES FINANCIAL#59 · 422,761 sh	422,761	$22.2M	<0.01%	+33.2%
60	Fisher Asset Management#60 · 419,102 sh	419,102	$22.0M	<0.01%	+7.3%
61	GENDELL JEFFREY L#61 · 395,882 sh	395,882	$20.7M	0.18%	+50.2%
62	Prosight Management#62 · 394,389 sh	394,389	$20.7M	3.56%	-23.2%
63	Legal & General Group Plc#63 · 393,524 sh	393,524	$20.6M	<0.01%	+3.4%
64	RICE HALL JAMES & ASSOCIATES#64 · 390,866 sh	390,866	$20.5M	1.00%	+0.1%
65	RHUMBLINE ADVISERS#65 · 387,999 sh	387,999	$20.3M	0.02%	-13.7%
66	GLENMEDE NA#66 · 361,184 sh	361,184	$18.9M	0.08%	-4.5%
67	CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#67 · 347,246 sh	347,246	$18.2M	0.01%	+5.8%
68	NOMURA ASSET MANAGEMENT INTERNATIONAL#68 · 337,043 sh	337,043	$17.7M	0.03%	-0.9%
69	Ensign Peak Advisors#69 · 335,208 sh	335,208	$17.6M	0.03%	+3498.2%
70	MILLENNIUM MANAGEMENT#70 · 319,595 sh	319,595	$16.7M	<0.01%	New
71	Swiss National Bank#71 · 316,900 sh	316,900	$16.6M	<0.01%	+2.1%
72	UBS Group AG#72 · 300,350 sh	300,350	$15.7M	<0.01%	-39.3%
73	Eagle Health Investments#73 · 297,302 sh	297,302	$15.6M	2.58%	+24.6%
74	GW&K Investment Management#74 · 292,387 sh	292,387	$15.3M	0.12%	New
75	Senator Investment Group#75 · 275,000 sh	275,000	$14.4M	0.53%	+17.0%
76	JPMORGAN CHASE#76 · 262,721 sh	262,721	$14.2M	<0.01%	-93.6%
77	Neuberger Berman Group#77 · 260,208 sh	260,208	$13.6M	<0.01%	+31.9%
78	C WorldWide Group Holding A/S#78 · 250,000 sh	250,000	$13.1M	0.32%	0.0%
79	StemPoint Capital#79 · 248,015 sh	248,015	$13.0M	2.24%	+208.1%
80	S#80 · 244,760 sh	244,760	$12.8M	0.74%	0.0%
81	Palo Alto Investors#81 · 242,560 sh	242,560	$12.7M	1.76%	0.0%
82	PEREGRINE CAPITAL MANAGEMENT#82 · 232,255 sh	232,255	$12.2M	0.40%	-4.8%
83	Russell Investments Group, Ltd.#83 · 222,624 sh	222,624	$11.7M	0.01%	+125.5%
84	FEDERATED HERMES#84 · 221,589 sh	221,589	$11.6M	0.02%	+652.2%
85	BARCLAYS PLC#85 · 219,935 sh	219,935	$11.5M	<0.01%	+25.7%
86	Amundi#86 · 217,739 sh	217,739	$11.4M	<0.01%	+236.5%
87	HealthInvest Partners AB#87 · 213,329 sh	213,329	$11.2M	3.01%	-12.0%
88	AQR CAPITAL MANAGEMENT#88 · 212,968 sh	212,968	$11.2M	<0.01%	-44.5%
89	Rock Springs Capital Management#89 · 199,811 sh	199,811	$10.5M	0.51%	+8.6%
90	WELLS FARGO & COMPANY#90 · 199,433 sh	199,433	$10.4M	<0.01%	+69.1%
91	Schonfeld Strategic Advisors#91 · 195,174 sh	195,174	$10.2M	0.04%	+1076.9%
92	abrdn plc#92 · 193,805 sh	193,805	$10.2M	0.01%	New
93	DEUTSCHE BANK AG\#93 · 191,316 sh	191,316	$10.0M	<0.01%	+27.8%
94	TFG Asset Management GP Ltd#94 · 189,979 sh	189,979	$10.0M	1.57%	+18.9%
95	Rhenman & Partners Asset Management AB#95 · 185,250 sh	185,250	$9.7M	0.92%	+39.0%
96	CITIGROUP#96 · 184,901 sh	184,901	$9.7M	<0.01%	+289.7%
97	HighVista Strategies#97 · 179,256 sh	179,256	$9.4M	2.14%	+144.9%
98	MARTINGALE ASSET MANAGEMENT L P#98 · 170,004 sh	170,004	$8.9M	0.21%	-12.7%
99	SG Americas Securities#99 · 164,236 sh	164,236	$8.6M	<0.01%	-8.2%
100	VANGUARD ASSET MANAGEMENT, Ltd#100 · 157,759 sh	157,759	$8.3M	<0.01%	+15.7%

Funds that sold out of ALKS in Q2 2026 (51)

Held ALKS at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held ALKS in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
Avoro Capital Advisors1,200,000 sh	1,200,000	$42.4M
Logos Global Management350,000 sh	350,000	$12.4M
Engineers Gate Manager208,497 sh	208,497	$7.4M
Hudson Bay Capital Management173,626 sh	173,626	$6.1M
WEDGE CAPITAL MANAGEMENT L L P151,234 sh	151,234	$5.3M
ALPS ADVISORS135,660 sh	135,660	$4.8M
Assenagon Asset Management S.A.122,127 sh	122,127	$4.3M
Krensavage Asset Management107,822 sh	107,822	$3.8M
Bridgewater Associates83,806 sh	83,806	$3.0M
HRT FINANCIAL81,989 sh	81,989	$2.9M
SCHRODER INVESTMENT MANAGEMENT GROUP67,458 sh	67,458	$2.0M
Edgestream Partners, L.P.52,826 sh	52,826	$1.9M
ZACKS INVESTMENT MANAGEMENT50,058 sh	50,058	$1.8M
GREAT POINT PARTNERS50,000 sh	50,000	$1.8M
DIADEMA PARTNERS50,000 sh	50,000	$1.8M
ADAR1 Capital Management46,400 sh	46,400	$1.6M
Jump Financial41,446 sh	41,446	$1.5M
Toroso Investments41,342 sh	41,342	$1.5M
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt37,964 sh	37,964	$1.3M
Entropy Technologies22,885 sh	22,885	$809.2K
FARALLON CAPITAL MANAGEMENT20,800 sh	20,800	$735.5K
DRW Securities20,180 sh	20,180	$713.6K
Marex Group plc19,891 sh	19,891	$703.3K
GC Wealth Management RIA16,980 sh	16,980	$600.4K
PRELUDE CAPITAL MANAGEMENT16,928 sh	16,928	$598.6K
OMERS ADMINISTRATION16,516 sh	16,516	$584.0K
AVIVA PLC15,354 sh	15,354	$542.9K
Sumitomo Mitsui13,900 sh	13,900	$491.5K
Daiwa Securities Group13,400 sh	13,400	$473.8K
Lombard Odier Asset Management (USA)10,232 sh	10,232	$361.8K
Bleakley Financial Group10,064 sh	10,064	$355.9K
GTS SECURITIES8,485 sh	8,485	$300.0K
Gallacher Capital Management7,677 sh	7,677	$271.5K
RHS Financial5,761 sh	5,761	$203.7K
Walleye Capital5,029 sh	5,029	$177.8K
ABS Direct Equity Fund4,900 sh	4,900	$167.4K
Walleye Trading3,395 sh	3,395	$120.0K
Advisory Services Network3,009 sh	3,009	$106.4K
Bayforest Capital Ltd1,441 sh	1,441	$51.0K
Root Financial Partners526 sh	526	$18.6K
E Fund Management (Hong Kong) , Ltd.503 sh	503	$17.8K
TWIN PEAKS WEALTH ADVISORS431 sh	431	$15.2K
MAI Capital Management324 sh	324	$11.5K
Intentional Wealth Strategies156 sh	156	$5.5K
CULLEN/FROST BANKERS79 sh	79	$2.8K
Western Wealth Management71 sh	71	$2.5K
PICTON MAHONEY ASSET MANAGEMENT42 sh	42	$1.5K
Innovative Asset Advisors Group32 sh	32	$1.1K
Frazier Financial Advisors10 sh	10	$354.00
Vermillion Wealth Management7 sh	7	$248.00
CURIO WEALTH3 sh	3	$106.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.