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Amphastar Pharmaceuticals
AMPH

Overview Fund Activity

241 hedge funds and large institutions have $751M invested in Amphastar Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 43 funds opening new positions, 91 increasing their positions, 73 reducing their positions, and 40 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
241
Holders Change
–
Holders Change %
0%
% of All Funds
3.23%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
43
Increased
91
Reduced
73
Closed
40
Calls
$447K
Puts
$381K
Net Calls
+$66K
Net Calls Change
-$235K

Top Buyers

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

Top Sellers

1
Federated Hermes
Federated Hermes
Pennsylvania
$258K
2
Boston Partners
Boston Partners
Massachusetts
$0
3
BlackRock
BlackRock
New York
$130M
4
GIP
Granite Investment Partners
California
$0
5
ECM
ExodusPoint Capital Management
New York
$745K
Name Holding Trade Value Shares
Change 		Shares
Change %
PA
151
Profund Advisors
Maryland
$221K -$37.1K -1,618 -14%
DM
152
Deerfield Management
New York
$220K +$220K +9,579 New
CUAMC
153
China Universal Asset Management Company
China
$217K -$4.04K -176 -2%
COPPSERS
154
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$217K +$10.7K +465 +5%
VI
155
Vestcor Inc
New Brunswick, Canada
$215K – – –
State of Tennessee, Department of Treasury
156
State of Tennessee, Department of Treasury
Tennessee
$214K – – –
VRS
157
Virginia Retirement Systems
Virginia
$201K -$18.4K -800 -8%
OPERF
158
Oregon Public Employees Retirement Fund
Oregon
$194K -$2.3K -100 -1%
PFSRSONJ
159
Police & Firemen's Retirement System of New Jersey
New Jersey
$190K – – –
Zurich Cantonal Bank
160
Zurich Cantonal Bank
Switzerland
$172K – – –
KK
161
KLP Kapitalforvaltning
Norway
$170K – – –
Fidelity Investments
162
Fidelity Investments
Massachusetts
$165K +$55K +2,397 +50%
PNC Financial Services Group
163
PNC Financial Services Group
Pennsylvania
$149K +$39K +1,700 +36%
Lazard Asset Management
164
Lazard Asset Management
New York
$145K +$145K +6,344 New
OC
165
Oakworth Capital
Alabama
$138K – – –
Public Employees Retirement Association of Colorado
166
Public Employees Retirement Association of Colorado
Colorado
$121K – – –
Carson Wealth (CWM LLC)
167
Carson Wealth (CWM LLC)
Nebraska
$103K +$87.7K +3,834 +574%
Canada Pension Plan Investment Board
168
Canada Pension Plan Investment Board
Ontario, Canada
$96.4K +$34.4K +1,500 +56%
SAM
169
Shell Asset Management
Netherlands
$96K -$10.6K -460 -10%
BIG
170
Brooklyn Investment Group
New York
$86.7K +$83.3K +3,629 +2,436%
AIP
171
Ameritas Investment Partners
Nebraska
$86.4K – – –
TRCT
172
Tower Research Capital (TRC)
New York
$82.3K +$59.6K +2,596 +263%
SOW
173
State of Wyoming
Wyoming
$62.5K -$49.1K -2,137 -44%
IA
174
IFP Advisors
Florida
$51.9K +$22.4K +877 +76%
GI
175
GAMMA Investing
California
$49.6K +$19K +829 +62%
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