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Amphastar Pharmaceuticals

240 hedge funds and large institutions have $873M invested in Amphastar Pharmaceuticals in 2025 Q3 according to their latest regulatory filings, with 34 funds opening new positions, 81 increasing their positions, 91 reducing their positions, and 34 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
240
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
$2.01M
Puts
$381K
Net Calls
Net Calls Change

Top Buyers

1 +$8.29M
2 +$7.56M
3 +$7.16M
4
UBS Group
UBS Group
Switzerland
+$6.54M
5
BCM
Bridgeway Capital Management
Texas
+$6.06M

Top Sellers

1 -$8.53M
2 -$7.17M
3 -$6.08M
4
CI
CX Institutional
Indiana
-$5.33M
5
BlackRock
BlackRock
New York
-$4.9M
Name Holding Trade Value Shares
Change
Change in
Stake
SFI
126
Susquehanna Fundamental Investments
Pennsylvania
$335K
SEI Investments
127
SEI Investments
Pennsylvania
$319K
HWM
128
Hohimer Wealth Management
Washington
$319K
SCM
129
Sterling Capital Management
North Carolina
$311K
CL
130
CIM LLC
New York
$310K
SBH
131
Segall Bryant & Hamill
Illinois
$298K
ASRS
132
Arizona State Retirement System
Arizona
$297K
VPIM
133
Vanguard Personalized Indexing Management
California
$293K
State Board of Administration of Florida Retirement System
134
State Board of Administration of Florida Retirement System
Florida
$291K
TRSOTSOK
135
Teachers Retirement System of the State of Kentucky
Kentucky
$280K
AB
136
Amalgamated Bank
New York
$280K
PFSRSONJ
137
Police & Firemen's Retirement System of New Jersey
New Jersey
$274K
ETC
138
Exchange Traded Concepts
Oklahoma
$266K
Franklin Resources
139
Franklin Resources
California
$254K
Comerica Bank
140
Comerica Bank
Texas
$252K
VI
141
Vestcor Inc
New Brunswick, Canada
$250K
Teacher Retirement System of Texas
142
Teacher Retirement System of Texas
Texas
$249K
State of Tennessee, Department of Treasury
143
State of Tennessee, Department of Treasury
Tennessee
$248K
YCM
144
Yousif Capital Management
Michigan
$247K
COPPSERS
145
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$243K
Bank of Montreal
146
Bank of Montreal
Ontario, Canada
$239K
ProShare Advisors
147
ProShare Advisors
Maryland
$230K
A
148
AlphaQuest
New York
$229K
MML Investors Services
149
MML Investors Services
Massachusetts
$226K
PA
150
Profund Advisors
Maryland
$218K