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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
AF
176
Allworth Financial
California
$39.3K
GI
177
GAMMA Investing
California
$32.6K
QL
178
Quarry LP
New York
$31.5K
GRP
179
Global Retirement Partners
California
$27.3K
GFM
180
GF Fund Management
China
$26.6K
FIA
181
FNY Investment Advisers
New York
$26K
FFA
182
Farther Finance Advisors
California
$25.2K
MPWT
183
MassMutual Private Wealth & Trust
Connecticut
$24.7K
US Bancorp
184
US Bancorp
Minnesota
$22.7K
TRCT
185
Tower Research Capital (TRC)
New York
$21.9K
CIBC Private Wealth Group
186
CIBC Private Wealth Group
Georgia
$19.2K
1IA
187
1620 Investment Advisors
Massachusetts
$18.2K
Nisa Investment Advisors
188
Nisa Investment Advisors
Missouri
$16.8K
RFS
189
Richardson Financial Services
Massachusetts
$16.3K
S
190
SignatureFD
Georgia
$13.9K
TPCW
191
TD Private Client Wealth
New York
$12.6K
Ohio Public Employees Retirement System (OPERS)
192
Ohio Public Employees Retirement System (OPERS)
Ohio
$12.5K
Fifth Third Bancorp
193
Fifth Third Bancorp
Ohio
$12K
Rockefeller Capital Management
194
Rockefeller Capital Management
New York
$11.3K
LFG
195
Larson Financial Group
Missouri
$10.9K
SL
196
Salomon & Ludwin
Virginia
$10.1K
Jones Financial Companies
197
Jones Financial Companies
Missouri
$9.85K
VCM
198
Versant Capital Management
Arizona
$7.75K
HNB
199
Huntington National Bank
Ohio
$7.22K
HI
200
Harbour Investments
Wisconsin
$7.2K