Companies / Alkermes plc. / Activity

Activity — Alkermes plc.

133 moves.

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InsidersInstitutions
DateActorActionSecurityValueShares ΔPosition afterImpact
Q1 2026
as of
Bvf INC/IL
13F manager
NewCommon stock$70.72M+2.0M
2,000,000
1.19% of shares
high
Q1 2026
as of
Norges Bank
13F manager
ExitCommon stock$-54.44M-1.9M
-100.00%
0
high
Q1 2026
as of
First Trust Advisors LP
13F manager
AddCommon stock$53.56M+1.5M
+104.18%
2,968,785
1.77% of shares
high
Q2 2026
as of
BlackRock, Inc.
13F manager
AddCommon stock$50.47M+963K
+3.41%
29,235,739
17.43% of shares
high
Q1 2026
as of
Arrowstreet Capital, Limited Partnership
13F manager
ExitCommon stock$-40.59M-1.5M
-100.00%
0
medium
Q2 2026
as of
Victory Capital Management, Inc.
13F manager
AddCommon stock$31.84M+608K
+196.74%
916,709
0.55% of shares
medium
Q1 2026
as of
Marshall Wace, LLP
13F manager
AddCommon stock$30.74M+869K
+669.31%
999,322
0.60% of shares
medium
Q1 2026
as of
Renaissance Technologies LLC
13F manager
TrimCommon stock$-17.95M-508K
-7.61%
6,160,428
3.67% of shares
medium
Q2 2026
as of
State Street Corporation
13F manager
TrimCommon stock$-16.36M-312K
-3.30%
9,160,575
5.46% of shares
medium
Q1 2026
as of
Two Sigma Investments, LP
13F manager
TrimCommon stock$-15.30M-433K
-35.66%
780,683
0.47% of shares
medium
Q1 2026
as of
Voya Investment Management LLC
13F manager
TrimCommon stock$-14.45M-409K
-81.44%
93,130
0.06% of shares
medium
Q1 2026
as of
Jeffrey L. Gendell
13F manager
NewCommon stock$9.32M+264K
263,604
0.16% of shares
medium
Q1 2026
as of
CPPIB Crestone Peak Resources Canada Inc.
13F manager
TrimCommon stock$-9.27M-262K
-84.39%
48,500
0.03% of shares
medium
Q1 2026
as of
Bridgewater Associates, LP
13F manager
TrimCommon stock$-9.22M-261K
-75.67%
83,806
0.05% of shares
medium
Q2 2025
as of
Barclays PLC
13F manager
AddCommon stock$7.84M+274K
+65.29%
694,122
0.41% of shares
medium
Q1 2026
as of
D. E. Shaw & Co., Inc.
13F manager
TrimCommon stock$-7.11M-201K
-22.05%
710,297
0.42% of shares
medium
Q4 2025
as of
Bank of America Corp /De
13F manager
AddCommon stock$6.62M+237K
+21.58%
1,333,105
0.79% of shares
medium
Q3 2024
as of
Barclays PLC
13F manager
AddCommon stock$6.18M+221K
+108.79%
423,931
0.25% of shares
medium
Q1 2026
as of
Hudson Bay Capital Management LP
13F manager
NewCommon stock$6.14M+174K
173,626
0.10% of shares
medium
Q4 2023
as of
Barclays PLC
13F manager
AddCommon stock$5.54M+200K
+87.52%
428,269
0.26% of shares
medium
Q1 2024
as of
Barclays PLC
13F manager
TrimCommon stock$-5.24M-194K
-45.18%
234,760
0.14% of shares
medium
Q1 2026
as of
AQR Capital Management, LLC
13F manager
TrimCommon stock$-4.61M-130K
-25.34%
383,977
0.23% of shares
low
Q4 2025
as of
Danske Bank A/S
13F manager
TrimCommon stock$-4.25M-152K
-99.22%
1,200
<0.01% of shares
low
Q3 2025
as of
Barclays PLC
13F manager
TrimCommon stock$-4.12M-137K
-19.81%
556,651
0.33% of shares
low
Q1 2026
as of
Geode Capital Management, LLC
13F manager
AddCommon stock$3.59M+101K
+2.49%
4,182,267
2.49% of shares
low
Q1 2026
as of
Intech Investment Management LLC
13F manager
TrimCommon stock$-3.49M-99K
-61.80%
60,967
0.04% of shares
low
Q1 2026
as of
BNP Paribas Financial Markets
13F manager
AddCommon stock$3.45M+98K
+22.69%
527,967
0.31% of shares
low
Q1 2026
as of
Victory Capital Management, Inc.
13F manager
TrimCommon stock$-3.31M-94K
-23.26%
308,929
0.18% of shares
low
Q1 2026
as of
Balyasny Asset Management L.P.
13F manager
TrimCommon stock$-3.28M-93K
-13.66%
586,775
0.35% of shares
low
Q1 2026
as of
Capital Fund Management S.A.
13F manager
AddCommon stock$3.26M+92K
+61.20%
243,043
0.14% of shares
low
Q1 2026
as of
Los Angeles Capital Management LLC
13F manager
TrimCommon stock$-3.00M-85K
-98.34%
1,435
<0.01% of shares
low
Q2 2026
as of
Deutsche Bank AG
13F manager
AddCommon stock$2.98M+57K
+42.28%
191,316
0.11% of shares
low
Q3 2024
as of
Danske Bank A/S
13F manager
TrimCommon stock$-2.95M-105K
-67.27%
51,286
0.03% of shares
low
Q1 2026
as of
Hussman Strategic Advisors, Inc.
13F manager
ExitCommon stock$-2.94M-105K
-100.00%
0
low
Q4 2024
as of
Danske Bank A/S
13F manager
AddCommon stock$2.92M+102K
+198.17%
152,921
0.09% of shares
low
Q2 2023
as of
Barclays PLC
13F manager
TrimCommon stock$-2.36M-76K
-26.93%
204,877
0.12% of shares
low
Q1 2026
as of
Prudential Financial Inc
13F manager
TrimCommon stock$-2.21M-63K
-32.20%
131,870
0.08% of shares
low
Q1 2026
as of
Campbell & CO Investment Adviser LLC
13F manager
ExitCommon stock$-2.05M-73K
-100.00%
0
low
Q1 2026
as of
Great Point Partners, LLC
13F manager
NewCommon stock$1.77M+50K
50,000
0.03% of shares
low
Q1 2026
as of
HighVista Strategies LLC
13F manager
AddCommon stock$1.65M+47K
+177.22%
73,189
0.04% of shares
low
Q1 2026
as of
Millennium Management LLC
13F manager
ExitCommon stock$-1.53M-55K
-100.00%
0
low
Q1 2026
as of
Rafferty Asset Management, LLC
13F manager
TrimCommon stock$-1.44M-41K
-20.09%
162,424
0.10% of shares
low
Q1 2026
as of
Bank of New York Mellon Corp/The
13F manager
TrimCommon stock$-1.33M-38K
-3.50%
1,036,460
0.62% of shares
low
Q1 2026
as of
TD Asset Management Inc
13F manager
ExitCommon stock$-1.29M-46K
-100.00%
0
low
Q1 2026
as of
AllianceBernstein L.P.
13F manager
AddCommon stock$1.26M+45K
+20.88%
260,935
0.16% of shares
low
Q1 2026
as of
California State Teachers Retirement System
13F manager
AddCommon stock$1.24M+35K
+23.52%
183,795
0.11% of shares
low
Q1 2026
as of
Zacks Investment Management
13F manager
TrimCommon stock$-1.21M-34K
-40.66%
50,058
0.03% of shares
low
Q1 2026
as of
Amundi
13F manager
AddCommon stock$1.14M+32K
+99.83%
64,710
0.04% of shares
low
Q1 2023
as of
Barclays PLC
13F manager
TrimCommon stock$-1.05M-37K
-11.77%
280,393
0.17% of shares
low
Q1 2026
as of
Segall Bryant & Hamill, LLC
13F manager
TrimCommon stock$-1.04M-30K
-4.80%
585,769
0.35% of shares
low
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