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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
CUAMC
151
China Universal Asset Management Company
China
$217K
OPERF
152
Oregon Public Employees Retirement Fund
Oregon
$214K
Pathstone Holdings
153
Pathstone Holdings
New Jersey
$213K
RRA
154
Round Rock Advisors
Connecticut
$212K
Commonwealth Equity Services
155
Commonwealth Equity Services
Massachusetts
$209K
Russell Investments Group
156
Russell Investments Group
United Kingdom
$204K
Zurich Cantonal Bank
157
Zurich Cantonal Bank
Switzerland
$200K
KK
158
KLP Kapitalforvaltning
Norway
$197K
Fidelity Investments
159
Fidelity Investments
Massachusetts
$172K
Pacer Advisors
160
Pacer Advisors
Pennsylvania
$160K
PNC Financial Services Group
161
PNC Financial Services Group
Pennsylvania
$147K
Public Employees Retirement Association of Colorado
162
Public Employees Retirement Association of Colorado
Colorado
$140K
WAM
163
Wolverine Asset Management
Illinois
$126K
SOW
164
State of Wyoming
Wyoming
$88K
HFS
165
Hantz Financial Services
Michigan
$83K
AIP
166
Ameritas Investment Partners
Nebraska
$82.6K
QCG
167
Quadrant Capital Group
Ohio
$82K
Group One Trading
168
Group One Trading
Illinois
$55.2K
OC
169
Oakworth Capital
Alabama
$49.9K
Mirae Asset Global Investments
170
Mirae Asset Global Investments
South Korea
$47.9K
IA
171
IFP Advisors
Florida
$47.2K
BTI
172
Blue Trust Inc
Georgia
$47.1K
PS
173
Principal Securities
Iowa
$42.7K
Carson Wealth (CWM LLC)
174
Carson Wealth (CWM LLC)
Nebraska
$40K
SAM
175
Shell Asset Management
Netherlands
$40K