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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 %
EF
51
Empowered Funds
Pennsylvania
$1.95M 85,112 +85,112 New
BCM
52
Bridgeway Capital Management
Texas
$1.95M 85,112 +85,112 New
Barclays
53
Barclays
United Kingdom
$1.89M 82,087 +15,135 +23%
Arrowstreet Capital
54
Arrowstreet Capital
Massachusetts
$1.87M 81,239 +81,239 New
NL
55
Nuveen LLC
North Carolina
$1.86M 81,142 -14,523 -15%
Two Sigma Investments
56
Two Sigma Investments
New York
$1.84M 80,130 +4,802 +6%
Victory Capital Management
57
Victory Capital Management
Texas
$1.76M 76,862 -4,225 -5%
Prudential Financial
58
Prudential Financial
New Jersey
$1.75M 41,951 +4,337 +12%
AQR Capital Management
59
AQR Capital Management
Connecticut
$1.74M 75,845 +22,207 +41%
Swiss National Bank
60
Swiss National Bank
Switzerland
$1.67M 72,600 -1,900 -3%
BNP Paribas Financial Markets
61
BNP Paribas Financial Markets
France
$1.65M 71,689 +63,744 +802%
UBS Group
62
UBS Group
Switzerland
$1.53M 66,834 -22,490 -25%
JF
63
Jump Financial
Illinois
$1.45M 63,334 +63,334 New
QT
64
Quantbot Technologies
New York
$1.4M 60,955 +39,846 +189%
GCP
65
GSA Capital Partners
United Kingdom
$1.31M 57,057 +11,760 +26%
SW
66
SteelPeak Wealth
California
$1.28M 55,795 – –
EGM
67
Engineers Gate Manager
New York
$1.22M 53,348 +14,803 +38%
AIC
68
Aurora Investment Counsel
Georgia
$1.22M 53,253 -828 -2%
IIM
69
INTECH Investment Management
Florida
$1.17M 51,071 -9,218 -15%
AllianceBernstein
70
AllianceBernstein
Tennessee
$1.16M 50,630 – –
BHCM
71
Brevan Howard Capital Management
Jersey
$1.12M 48,920 +40,335 +470%
New York State Common Retirement Fund
72
New York State Common Retirement Fund
New York
$1.11M 48,369 -33,196 -41%
AssetMark Inc
73
AssetMark Inc
California
$1M 43,766 +3,229 +8%
LSV Asset Management
74
LSV Asset Management
Illinois
$992K 43,200 – –
Creative Planning
75
Creative Planning
Kansas
$979K 42,620 +22,493 +112%
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