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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 %
New York State Teachers Retirement System (NYSTRS)
101
New York State Teachers Retirement System (NYSTRS)
New York
$545K 23,732 -134 -0.6%
MIM
102
MetLife Investment Management
New Jersey
$530K 23,093 – –
Squarepoint
103
Squarepoint
New York
$529K 23,026 -46,744 -67%
CCIA
104
Campbell & Co Investment Adviser
Maryland
$515K 22,433 -23,356 -51%
SOADOR
105
State of Alaska Department of Revenue
Alaska
$502K 21,892 +1,111 +5%
FRM
106
Fox Run Management
Connecticut
$487K 21,199 +21,199 New
ACM
107
Aquatic Capital Management
Illinois
$487K 21,195 +21,195 New
DekaBank Deutsche Girozentrale
108
DekaBank Deutsche Girozentrale
Germany
$475K 20,848 – –
Mirae Asset Global ETFs Holdings
109
Mirae Asset Global ETFs Holdings
Hong Kong
$467K 20,338 -2,151 -10%
Man Group
110
Man Group
United Kingdom
$466K 20,300 -17,937 -47%
GCM
111
Graham Capital Management
Connecticut
$466K 20,288 -6,136 -23%
IMRF
112
Illinois Municipal Retirement Fund
Illinois
$458K 19,937 -418 -2%
Manulife (Manufacturers Life Insurance)
113
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$429K 18,688 -1,138 -6%
VOYA Investment Management
114
VOYA Investment Management
Georgia
$416K 18,099 -43 -0.2%
CG
115
Cynosure Group
Utah
$409K 17,820 +5,419 +44%
YIH
116
Y-Intercept (HK)
Hong Kong
$407K 17,727 +17,727 New
VA
117
Vident Advisory
Georgia
$397K 17,279 +17,279 New
LSERS
118
Louisiana State Employees Retirement System
Louisiana
$395K 17,200 -500 -3%
Janus Henderson Group
119
Janus Henderson Group
United Kingdom
$387K 16,868 -107,534 -86%
Assenagon Asset Management
120
Assenagon Asset Management
Luxembourg
$381K 16,610 +1,394 +9%
SWP
121
Significant Wealth Partners
Illinois
$371K 16,178 +5,963 +58%
OQS
122
Occudo Quantitative Strategies
Florida
$362K 15,774 +15,774 New
Wellington Management Group
123
Wellington Management Group
Massachusetts
$359K 15,618 -1,295 -8%
AR
124
Advisory Research
Illinois
$342K 14,898 +1,009 +7%
PP
125
PDT Partners
New York
$336K 14,630 +14,630 New
3 4
5
6 7