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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
PMAM
226
Picton Mahoney Asset Management
Ontario, Canada
$1K
CT
227
Clearstead Trust
Maine
$880
PWMG
228
Private Wealth Management Group
New Jersey
$720
FMII
229
Farmers & Merchants Investments Inc
Nebraska
$666
HFS
230
Hughes Financial Services
Virginia
$627
RWM
231
Rialto Wealth Management
New York
$613
SS
232
Sunbelt Securities
Texas
$586
AGWCA
233
Annis Gardner Whiting Capital Advisors
Florida
$427
BIA
234
Bell Investment Advisors
California
$427
RIL
235
Rothschild Investment LLC
Illinois
$400
Kayne Anderson Rudnick Investment Management
236
Kayne Anderson Rudnick Investment Management
California
$400
LWMI
237
Legacy Wealth Management (Idaho)
Idaho
$267
AWM
238
Abound Wealth Management
Tennessee
$107
CIAM
239
Caitong International Asset Management
Hong Kong
$80
TI
240
Trexquant Investment
Connecticut
TC
241
TwinBeech Capital
New York
JF
242
Jump Financial
Illinois
GCP
243
GSA Capital Partners
United Kingdom
Susquehanna International Group
244
Susquehanna International Group
Pennsylvania
TPSF
245
Texas Permanent School Fund
Texas
EGM
246
Engineers Gate Manager
New York
AIC
247
Aurora Investment Counsel
Georgia
Capital Fund Management (CFM)
248
Capital Fund Management (CFM)
France
EP
249
Edgestream Partners
New Jersey
AC
250
Aristeia Capital
Connecticut