Institutional Ownership Amphastar Pharmaceuticals, Inc. (AMPH)
This table provides information about the institutional ownership of Amphastar Pharmaceuticals, Inc. (AMPH). We have compiled data on the 254 institutions that hold shares in the stock, with a total of 33.1 Million shares, which have been reported (via 13F filing form) to have a value of $688 Million.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|
Rhumbline Advisers
Boston, MA |
May 29, 2025 Q1 2025 |
88,958
shares
|
$1.92 Million
0.0% of portfolio
|
Q4 2024
Reduced 1.83%
|
|
|
Hrt Financial LP
New York, NY |
May 15, 2025 Q1 2025 |
86,364
shares
|
$1.87 Million
0.02% of portfolio
|
Q1 2025
New holding
|
|
|
David A. Siegel
Two Sigma Advisers, LP | New York, Ny
|
May 15, 2025 Q1 2025 |
84,700
shares
|
$1.83 Million
0.01% of portfolio
|
Q1 2025
Reduced 1.4%
|
|
|
New York State Common Retirement Fund
|
May 01, 2025 Q1 2025 |
81,565
shares
|
$1.76 Million
0.0% of portfolio
|
Q1 2025
Added 15.71%
|
|
|
Victory Capital Management Inc
|
May 02, 2025 Q1 2025 |
81,087
shares
|
$1.75 Million
0.0% of portfolio
|
Q1 2025
Added 27.92%
|
|
|
Ubs Asset Management Americas Inc
Chicago, IL |
May 19, 2025 Q1 2025 |
79,089
shares
|
$1.71 Million
0.0% of portfolio
|
Q1 2025
Reduced 4.98%
|
|
|
Citigroup Inc
|
May 12, 2025 Q1 2025 |
77,737
shares
|
$1.68 Million
0.0% of portfolio
|
Q1 2025
Added 23.06%
|
|
|
Two Sigma Investments, LP
New York, NY |
May 15, 2025 Q1 2025 |
75,328
shares
|
$1.63 Million
0.01% of portfolio
|
Q1 2025
Reduced 23.28%
|
|
|
Swiss National Bank
Zurich, V8 |
May 12, 2025 Q1 2025 |
74,500
shares
|
$1.61 Million
0.0% of portfolio
|
Q1 2025
Reduced 2.49%
|
|
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
May 14, 2025 Q1 2025 |
70,709
shares
|
$1.53 Million
0.0% of portfolio
|
Q1 2025
Added 126.15%
|
|
|
Squarepoint Ops LLC
New York, NY |
May 15, 2025 Q1 2025 |
69,770
shares
|
$1.51 Million
0.0% of portfolio
|
Q1 2025
Added 294.98%
|
|
|
Barclays PLC
London, X0 |
May 15, 2025 Q1 2025 |
66,952
shares
|
$1.45 Million
0.0% of portfolio
|
Q1 2025
Reduced 21.04%
|
|
|
Jpmorgan Chase & CO
New York, NY |
May 12, 2025 Q1 2025 |
66,880
shares
|
$1.45 Million
0.0% of portfolio
|
Q1 2025
Reduced 56.45%
|
|
|
Intech Investment Management LLC
West Palm Beach, FL |
May 20, 2025 Q1 2025 |
60,289
shares
|
$1.3 Million
0.02% of portfolio
|
Q1 2025
Added 43.01%
|
|
|
Gsa Capital Partners LLP
London, X0 |
Jul 22, 2025 Q2 2025 |
57,057
shares
|
$1.23 Million
0.09% of portfolio
|
Q2 2025
Added 25.96%
|
|
|
Steel Peak Wealth Management LLC
|
Jul 22, 2025 Q2 2025 |
55,795
shares
|
$1.21 Million
0.05% of portfolio
|
Q1 2025
New holding
|
|
|
Aqr Capital Management LLC
Greenwich, CT |
May 15, 2025 Q1 2025 |
53,638
shares
|
$1.16 Million
0.0% of portfolio
|
Q1 2025
Added 82.0%
|
|
|
Aurora Investment Counsel
Atlanta, GA |
Jul 30, 2025 Q2 2025 |
53,253
shares
|
$1.15 Million
0.71% of portfolio
|
Q2 2025
Reduced 1.53%
|
|
|
Texas Permanent School Fund
Austin, TX |
May 14, 2025 Q1 2025 |
51,906
shares
|
$1.12 Million
0.01% of portfolio
|
Q1 2025
New holding
|
|
|
Credit Suisse Ag
Zurich, V8 |
May 10, 2024 Q1 2024 |
51,312
shares
|
$1.11 Million
0.0% of portfolio
|
Q4 2023
Reduced 0.34%
|
|
|
Alliancebernstein L.P.
New York, NY |
May 15, 2025 Q1 2025 |
50,630
shares
|
$1.09 Million
0.0% of portfolio
|
Q4 2024
Added 1.79%
|
|
|
Jane Street Group, LLC
New York, NY |
May 19, 2025 Q1 2025 |
46,665
shares
|
$1.01 Million
0.0% of portfolio
|
Q1 2025
Reduced 53.09%
|
|
|
Twinbeech Capital LP
Purchase, NY |
May 15, 2025 Q1 2025 |
43,986
shares
|
$950,977
0.03% of portfolio
|
Q1 2025
Reduced 6.01%
|
|
|
Assetmark, Inc
|
Aug 04, 2025 Q2 2025 |
43,766
shares
|
$946,220
0.0% of portfolio
|
Q2 2025
Added 7.97%
|
|
|
Lsv Asset Management
Chicago, IL |
May 08, 2025 Q1 2025 |
43,200
shares
|
$933,984
0.0% of portfolio
|
Q1 2025
Added 18.68%
|