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Amphastar Pharmaceuticals

241 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, 92 reducing their positions, and 34 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
241
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
PWA
226
Physician Wealth Advisors
Utah
$1.09K
PMAM
227
Picton Mahoney Asset Management
Ontario, Canada
$1K
CT
228
Clearstead Trust
Maine
$880
PWMG
229
Private Wealth Management Group
New Jersey
$720
FMII
230
Farmers & Merchants Investments Inc
Nebraska
$666
HFS
231
Hughes Financial Services
Virginia
$627
RWM
232
Rialto Wealth Management
New York
$613
SS
233
Sunbelt Securities
Texas
$586
AGWCA
234
Annis Gardner Whiting Capital Advisors
Florida
$427
BIA
235
Bell Investment Advisors
California
$427
RIL
236
Rothschild Investment LLC
Illinois
$400
Kayne Anderson Rudnick Investment Management
237
Kayne Anderson Rudnick Investment Management
California
$400
LWMI
238
Legacy Wealth Management (Idaho)
Idaho
$267
AWM
239
Abound Wealth Management
Tennessee
$107
CIAM
240
Caitong International Asset Management
Hong Kong
$80
TI
241
Trexquant Investment
Connecticut
TC
242
TwinBeech Capital
New York
JF
243
Jump Financial
Illinois
GCP
244
GSA Capital Partners
United Kingdom
Susquehanna International Group
245
Susquehanna International Group
Pennsylvania
TPSF
246
Texas Permanent School Fund
Texas
EGM
247
Engineers Gate Manager
New York
AIC
248
Aurora Investment Counsel
Georgia
Capital Fund Management (CFM)
249
Capital Fund Management (CFM)
France
EP
250
Edgestream Partners
New Jersey