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Amphastar Pharmaceuticals

242 hedge funds and large institutions have $753M invested in Amphastar Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 43 funds opening new positions, 92 increasing their positions, 73 reducing their positions, and 40 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
242
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$447K
Puts
$381K
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
AR
126
Advisory Research
Illinois
$342K
PP
127
PDT Partners
New York
$336K
Handelsbanken Fonder
128
Handelsbanken Fonder
Sweden
$331K
GAM
129
Gotham Asset Management
New York
$322K
MF
130
Magnetar Financial
Illinois
$306K
Tudor Investment Corp
131
Tudor Investment Corp
Connecticut
$297K
SEI Investments
132
SEI Investments
Pennsylvania
$291K
VPIM
133
Vanguard Personalized Indexing Management
California
$290K
HWM
134
Hohimer Wealth Management
Washington
$272K
Bank of Montreal
135
Bank of Montreal
Ontario, Canada
$271K
TRSOTSOK
136
Teachers Retirement System of the State of Kentucky
Kentucky
$268K
Comerica Bank
137
Comerica Bank
Texas
$265K
CL
138
CIM LLC
New York
$262K
QCM
139
Quantinno Capital Management
New York
$259K
Federated Hermes
140
Federated Hermes
Pennsylvania
$258K
SBH
141
Segall Bryant & Hamill
Illinois
$257K
ASRS
142
Arizona State Retirement System
Arizona
$255K
YCM
143
Yousif Capital Management
Michigan
$254K
MSRPS
144
Maryland State Retirement & Pension System
Maryland
$251K
State Board of Administration of Florida Retirement System
145
State Board of Administration of Florida Retirement System
Florida
$251K
AB
146
Amalgamated Bank
New York
$242K
SSA
147
Schonfeld Strategic Advisors
New York
$237K
Teacher Retirement System of Texas
148
Teacher Retirement System of Texas
Texas
$235K
SCM
149
Sterling Capital Management
North Carolina
$235K
ProShare Advisors
150
ProShare Advisors
Maryland
$230K