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Amphastar Pharmaceuticals
AMPH

Overview Fund Activity

239 hedge funds and large institutions have $750M invested in Amphastar Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 43 funds opening new positions, 91 increasing their positions, 71 reducing their positions, and 40 closing their positions.

Holders
239
Holders Change
-2
Holders Change %
-0.83%
% of All Funds
3.21%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
43
Increased
91
Reduced
71
Closed
40
Calls
$447K
Puts
$381K
Net Calls
+$66K
Net Calls Change
-$235K

Top Buyers

1
Royal Bank of Canada
1
Royal Bank of Canada
Ontario, Canada
$7.32M
2
Dimensional Fund Advisors
2
Dimensional Fund Advisors
Texas
$37.4M
3
D.E. Shaw & Co
3
D.E. Shaw & Co
New York
$6.75M
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$61.7M
5
Qube Research & Technologies (QRT)
5
Qube Research & Technologies (QRT)
United Kingdom
$10.8M

Top Sellers

1
Federated Hermes
1
Federated Hermes
Pennsylvania
$258K
2
Boston Partners
2
Boston Partners
Massachusetts
$0
3
BlackRock
3
BlackRock
New York
$130M
4
GIP
4
Granite Investment Partners
California
$0
5
ECM
5
ExodusPoint Capital Management
New York
$745K
Name Market Value Shares Shares
Change 		Shares
Change %
Handelsbanken Fonder
126
Handelsbanken Fonder
Sweden
$331K 14,400 – –
GAM
127
Gotham Asset Management
New York
$322K 14,014 +3,144 +29%
MF
128
Magnetar Financial
Illinois
$306K 13,337 +13,337 New
Tudor Investment Corp
129
Tudor Investment Corp
Connecticut
$297K 12,916 -8,877 -41%
SEI Investments
130
SEI Investments
Pennsylvania
$291K 12,672 +3,081 +32%
VPIM
131
Vanguard Personalized Indexing Management
California
$290K 12,624 +4,855 +62%
HWM
132
Hohimer Wealth Management
Washington
$272K 11,845 +3,840 +48%
Bank of Montreal
133
Bank of Montreal
Ontario, Canada
$271K 11,790 +3,584 +44%
TRSOTSOK
134
Teachers Retirement System of the State of Kentucky
Kentucky
$268K 11,691 – –
Comerica Bank
135
Comerica Bank
Texas
$265K 11,553 -10 -0.1%
CL
136
CIM LLC
New York
$262K 11,429 +1,541 +16%
QCM
137
Quantinno Capital Management
New York
$259K 11,269 +11,269 New
Federated Hermes
138
Federated Hermes
Pennsylvania
$258K 11,224 -573,891 -98%
SBH
139
Segall Bryant & Hamill
Illinois
$257K 11,185 – –
ASRS
140
Arizona State Retirement System
Arizona
$255K 11,090 +78 +0.7%
YCM
141
Yousif Capital Management
Michigan
$254K 11,078 -37 -0.3%
MSRPS
142
Maryland State Retirement & Pension System
Maryland
$251K 10,936 – –
State Board of Administration of Florida Retirement System
143
State Board of Administration of Florida Retirement System
Florida
$251K 10,913 – –
AB
144
Amalgamated Bank
New York
$242K 10,549 -212 -2%
SSA
145
Schonfeld Strategic Advisors
New York
$237K 10,340 +10,340 New
Teacher Retirement System of Texas
146
Teacher Retirement System of Texas
Texas
$235K 10,251 -107 -1%
SCM
147
Sterling Capital Management
North Carolina
$235K 10,217 +898 +10%
ProShare Advisors
148
ProShare Advisors
Maryland
$230K 10,039 -1,038 -9%
ETC
149
Exchange Traded Concepts
Oklahoma
$226K 9,831 +965 +11%
PA
150
Profund Advisors
Maryland
$221K 9,638 -1,618 -14%
4 5
6
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