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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 %
FMII
226
Farmers & Merchants Investments Inc
Nebraska
$643 28 – –
RWM
227
Rialto Wealth Management
New York
$460 20 +20 New
HWM
228
HighMark Wealth Management
Minnesota
$459 20 +20 New
UB
229
UMB Bank
Missouri
$436 19 -208 -92%
BFS
230
Bare Financial Services
Pennsylvania
$436 19 +19 New
PS
231
Principal Securities
Iowa
$413 18 -765 -98%
AGWCA
232
Annis Gardner Whiting Capital Advisors
Florida
$368 16 +16 New
KG
233
Kilter Group
New York
$345 15 +15 New
Kayne Anderson Rudnick Investment Management
234
Kayne Anderson Rudnick Investment Management
California
$344 15 – –
EC
235
Elequin Capital
New York
$321 14 +14 New
LWMI
236
Legacy Wealth Management (Idaho)
Idaho
$230 10 – –
LIS
237
Legacy Investment Solutions
Idaho
$230 10 +10 New
WCM
238
WealthTrak Capital Management
Virginia
$115 5 +5 New
AWM
239
Abound Wealth Management
Tennessee
$92 4 – –
Boston Partners
240
Boston Partners
Massachusetts
– – -423,070 Closed
GIP
241
Granite Investment Partners
California
– – -375,778 Closed
SAM
242
Silvercrest Asset Management
New York
– – -165,856 Closed
FCM
243
Frontier Capital Management
Massachusetts
– – -119,628 Closed
N
244
Numerai
California
– – -34,006 Closed
Connor, Clark & Lunn Investment Management (CC&L)
245
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
– – -32,241 Closed
HSA
246
Hussman Strategic Advisors
Maryland
– – -31,500 Closed
Franklin Resources
247
Franklin Resources
California
– – -20,260 Closed
JG
248
Jain Global
New York
– – -20,136 Closed
CF
249
Corebridge Financial
Texas
– – -19,756 Closed
XT
250
XTX Topco
Cayman Islands
– – -18,358 Closed
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10
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