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 256 institutions that hold shares in the stock, with a total of 33.3 Million shares, which have been reported (via 13F filing form) to have a value of $1.01 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Black Rock Inc.
New York, NY |
Aug 13, 2024 Q2 2024 |
5,942,524
shares
|
$180 Million
0.01% of portfolio
|
Q2 2024
Reduced 2.25%
|
|
|
Vanguard Group Inc
Valley Forge, PA |
Aug 11, 2025 Q2 2025 |
2,686,950
shares
|
$81.5 Million
0.0% of portfolio
|
Q2 2025
Added 10.9%
|
|
|
Td Asset Management Inc
|
Jul 28, 2025 Q2 2025 |
2,034,930
shares
|
$61.8 Million
0.04% of portfolio
|
Q2 2025
Reduced 8.01%
|
|
|
Dimensional Fund Advisors LP
Austin, TX |
Aug 12, 2025 Q2 2025 |
1,626,884
shares
|
$49.4 Million
0.01% of portfolio
|
Q2 2025
Added 19.94%
|
|
|
State Street Corp
Boston, MA |
Aug 14, 2025 Q2 2025 |
1,576,233
shares
|
$47.8 Million
0.0% of portfolio
|
Q2 2025
Reduced 1.77%
|
|
|
Fuller & Thaler Asset Management, Inc.
San Mateo, CA |
Aug 14, 2025 Q2 2025 |
1,263,772
shares
|
$38.4 Million
0.11% of portfolio
|
Q2 2025
Added 0.01%
|
|
|
Epoch Investment Partners, Inc.
New York, NY |
Aug 13, 2025 Q2 2025 |
1,241,369
shares
|
$37.7 Million
0.16% of portfolio
|
Q2 2025
Reduced 1.58%
|
|
|
Boston Trust Walden Corp
|
Jul 28, 2025 Q2 2025 |
1,176,453
shares
|
$35.7 Million
0.2% of portfolio
|
Q2 2025
Reduced 3.22%
|
|
|
Geode Capital Management, LLC
Boston, MA |
Aug 08, 2025 Q2 2025 |
973,237
shares
|
$29.5 Million
0.0% of portfolio
|
Q2 2025
Added 1.9%
|
|
|
Marshall Wace, LLP
London, X0 |
Aug 13, 2025 Q2 2025 |
848,685
shares
|
$25.8 Million
0.02% of portfolio
|
Q2 2025
Reduced 17.74%
|
|
|
Morgan Stanley
New York, NY |
Aug 15, 2025 Q2 2025 |
681,222
shares
|
$20.7 Million
0.0% of portfolio
|
Q2 2025
Added 30.47%
|
|
|
Israel Englander
Millennium Management LLC | New York, Ny
|
Aug 14, 2025 Q2 2025 |
618,984
shares
|
$18.8 Million
0.01% of portfolio
|
Q2 2025
Reduced 28.73%
|
|
|
Jim Simons
Renaissance Technologies LLC | New York, Ny
|
Aug 13, 2025 Q2 2025 |
576,500
shares
|
$17.5 Million
0.02% of portfolio
|
Q2 2025
Added 16.46%
|
|
|
Qube Research & Technologies LTD
London, X0 |
Aug 14, 2025 Q2 2025 |
469,492
shares
|
$14.2 Million
0.01% of portfolio
|
Q2 2025
Added 81.28%
|
|
|
Northern Trust Corp
Chicago, IL |
Aug 13, 2025 Q2 2025 |
421,136
shares
|
$12.8 Million
0.0% of portfolio
|
Q2 2025
Reduced 29.15%
|
|
|
Invesco Ltd.
Atlanta, GA |
Aug 13, 2025 Q2 2025 |
386,971
shares
|
$11.7 Million
0.0% of portfolio
|
Q2 2025
Added 7.75%
|
|
|
Mesirow Institutional Investment Management, Inc.
Chicago, IL |
Feb 13, 2025 Q4 2024 |
380,389
shares
|
$11.5 Million
1.11% of portfolio
|
Q4 2024
Reduced 8.11%
|
|
|
Hotchkis & Wiley Capital Management LLC
Los Angeles, CA |
Aug 13, 2025 Q2 2025 |
365,920
shares
|
$11.1 Million
0.03% of portfolio
|
Q2 2025
Added 35.45%
|
|
|
Systematic Financial Management LP
Teaneck, NJ |
Aug 13, 2025 Q2 2025 |
359,307
shares
|
$10.9 Million
0.23% of portfolio
|
Q2 2025
Added 10.03%
|
|
|
Goldman Sachs Group Inc
New York, NY |
Aug 14, 2025 Q2 2025 |
356,250
shares
|
$10.8 Million
0.0% of portfolio
|
Q2 2025
Reduced 12.41%
|
|
|
Charles Schwab Investment Management Inc
San Francisco, CA |
Aug 12, 2025 Q2 2025 |
346,784
shares
|
$10.5 Million
0.0% of portfolio
|
Q2 2025
Added 6.3%
|
|
|
Pacer Advisors, Inc.
Malvern, PA |
Aug 12, 2025 Q2 2025 |
326,098
shares
|
$9.9 Million
0.02% of portfolio
|
Q2 2025
Reduced 31.98%
|
|
|
Voloridge Investment Management, LLC
Jupiter, FL |
Aug 14, 2025 Q2 2025 |
325,512
shares
|
$9.88 Million
0.03% of portfolio
|
Q2 2025
Added 50.7%
|
|
|
Royal Bank Of Canada
Toronto, A6 |
Aug 14, 2025 Q2 2025 |
318,717
shares
|
$9.67 Million
0.0% of portfolio
|
Q2 2025
Added 1122.12%
|
|
|
D. E. Shaw & Co., Inc.
New York, NY |
Aug 14, 2025 Q2 2025 |
293,928
shares
|
$8.92 Million
0.01% of portfolio
|
Q2 2025
Added 907.02%
|