Latest Institutional Purchases of Amphastar Pharmaceuticals, Inc. (AMPH)
This list provides information on the latest institutional transactions involving Amphastar Pharmaceuticals, Inc. (AMPH) stock that were buys. The list includes the name of the institution, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the purchase has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Nov 13, 2025
Q3 2025
|
Arrowstreet Capital, Limited Partnership
Boston, MA |
BUY
|
- |
311K+ 382.91% |
$6.41M - $9.58M
|
392K
$10.2M
|
|
|
Nov 14, 2025
Q3 2025
|
Clark Capital Management Group, Inc.
Philadelphia, PA |
BUY
|
- |
284KNew |
$5.85M - $8.74M
|
284K
$7.39M
|
|
|
Nov 14, 2025
Q3 2025
|
Algert Global LLC
San Francisco, CA |
BUY
|
- |
269K+ 216.12% |
$5.54M - $8.28M
|
393K
$10.2M
|
|
|
Nov 13, 2025
Q3 2025
|
Ubs Group Ag
|
BUY
|
- |
245K+ 367.24% |
$5.06M - $7.56M
|
312K
$8.14M
|
|
|
Nov 14, 2025
Q3 2025
|
Bridgeway Capital Management, LLC
Houston, TX |
BUY
|
- |
227K+ 266.97% |
$4.69M - $7M
|
312K
$8.14M
|
|
|
Nov 14, 2025
Q3 2025
|
D. E. Shaw & Co., Inc.
New York, NY |
BUY
|
- |
223K+ 75.97% |
$4.6M - $6.88M
|
517K
$13.5M
|
|
|
Nov 07, 2025
Q3 2025
|
Jpmorgan Chase & CO
New York, NY |
BUY
|
- |
186K+ 278.64% |
$3.84M - $5.74M
|
253K
$6.6M
|
|
|
Nov 07, 2025
Q3 2025
|
Denali Advisors LLC
|
BUY
|
- |
135KNew |
$2.78M - $4.16M
|
135K
$3.52M
|
|
|
Nov 12, 2025
Q3 2025
|
Victory Capital Management Inc
|
BUY
|
- |
135K+ 175.56% |
$2.78M - $4.16M
|
212K
$5.52M
|
|
|
Oct 16, 2025
Q3 2025
|
Rice Hall James & Associates, LLC
|
BUY
|
- |
129KNew |
$2.67M - $3.98M
|
129K
$3.37M
|
|
|
Nov 12, 2025
Q3 2025
|
Dimensional Fund Advisors LP
Austin, TX |
BUY
|
- |
129K+ 7.92% |
$2.66M - $3.97M
|
1.76M
$45.8M
|
|
|
Nov 13, 2025
Q3 2025
|
Fuller & Thaler Asset Management, Inc.
San Mateo, CA |
BUY
|
- |
90.2K+ 7.13% |
$1.86M - $2.78M
|
1.35M
$35.3M
|
|
|
Nov 12, 2025
Q3 2025
|
Jefferies Financial Group Inc.
New York, NY |
BUY
|
- |
89.2KNew |
$1.84M - $2.75M
|
89.2K
$2.33M
|
|
|
Nov 12, 2025
Q3 2025
|
Royce & Associates LP
|
BUY
|
- |
83.1K+ 29.36% |
$1.71M - $2.56M
|
366K
$9.55M
|
|
|
Nov 14, 2025
Q3 2025
|
Israel Englander
Millennium Management LLC | New York, Ny
|
BUY
|
- |
78.8K+ 12.73% |
$1.62M - $2.43M
|
698K
$18.2M
|
|
|
Nov 13, 2025
Q3 2025
|
Empowered Funds, LLC
|
BUY
|
- |
64.7K+ 76.0% |
$1.33M - $1.99M
|
150K
$3.9M
|
|
|
Nov 13, 2025
Q3 2025
|
Systematic Financial Management LP
Teaneck, NJ |
BUY
|
- |
63.8K+ 17.76% |
$1.32M - $1.97M
|
423K
$11M
|
|
|
Nov 13, 2025
Q3 2025
|
Jane Street Group, LLC
New York, NY |
BUY
|
CALL |
58.3KNew |
$1.2M - $1.8M
|
58.3K
$1.52M
|
|
|
Nov 12, 2025
Q3 2025
|
First Trust Advisors LP
Wheaton, IL |
BUY
|
- |
56.1K+ 59.51% |
$1.16M - $1.73M
|
150K
$3.92M
|
|
|
Nov 12, 2025
Q3 2025
|
American Century Companies Inc
Kansas City, MO |
BUY
|
- |
55.4K+ 23.77% |
$1.14M - $1.71M
|
289K
$7.52M
|
|
|
Nov 14, 2025
Q3 2025
|
Quantedge Capital Pte LTD
Singapore, U0 |
BUY
|
- |
45.1KNew |
$930K - $1.39M
|
45.1K
$1.18M
|
|
|
Nov 13, 2025
Q3 2025
|
Acadian Asset Management LLC
Boston, MA |
BUY
|
- |
44.3KNew |
$914K - $1.37M
|
44.3K
$1.16M
|
|
|
Nov 03, 2025
Q3 2025
|
New York State Common Retirement Fund
|
BUY
|
- |
41.8K+ 86.42% |
$862K - $1.29M
|
90.2K
$2.35M
|
|
|
Nov 03, 2025
Q3 2025
|
Summer Haven Investment Management, LLC
|
BUY
|
- |
38.2KNew |
$788K - $1.18M
|
38.2K
$995K
|
|
|
Nov 14, 2025
Q3 2025
|
Hrt Financial LP
New York, NY |
BUY
|
- |
35.7K+ 84.76% |
$735K - $1.1M
|
77.7K
$2.03M
|
|
|
Nov 06, 2025
Q3 2025
|
Lsv Asset Management
Chicago, IL |
BUY
|
- |
30.1K+ 69.68% |
$621K - $927K
|
73.3K
$1.91M
|
|
|
Nov 13, 2025
Q3 2025
|
O'Shaughnessy Asset Management, LLC
Stamford, CT |
BUY
|
- |
28.7K+ 71.32% |
$593K - $886K
|
69.1K
$1.8M
|
|
|
Nov 14, 2025
Q3 2025
|
Squarepoint Ops LLC
New York, NY |
BUY
|
- |
26.3K+ 114.15% |
$542K - $810K
|
49.3K
$1.29M
|
|
|
Nov 13, 2025
Q3 2025
|
Marshall Wace, LLP
London, X0 |
BUY
|
- |
25.4K+ 2.99% |
$523K - $782K
|
874K
$22.8M
|
|
|
Nov 04, 2025
Q3 2025
|
Envestnet Asset Management Inc
|
BUY
|
- |
22KNew |
$453K - $677K
|
22K
$573K
|
|
|
Oct 28, 2025
Q3 2025
|
Campbell & CO Investment Adviser LLC
Baltimore, MD |
BUY
|
- |
21.6K+ 96.44% |
$446K - $667K
|
44.1K
$1.15M
|
|
|
Nov 14, 2025
Q3 2025
|
Lighthouse Investment Partners, LLC
Palm Beach Gardens, FL |
BUY
|
- |
21.6KNew |
$445K - $665K
|
21.6K
$563K
|
|
|
Oct 20, 2025
Q3 2025
|
Los Angeles Capital Management LLC
|
BUY
|
- |
18.9KNew |
$391K - $583K
|
18.9K
$494K
|
|
|
Nov 14, 2025
Q3 2025
|
Two Sigma Investments, LP
New York, NY |
BUY
|
- |
18.5K+ 23.15% |
$382K - $571K
|
98.7K
$2.57M
|
|
|
Nov 13, 2025
Q3 2025
|
Canada Pension Plan Investment Board
Toronto Ontario, A6 |
BUY
|
- |
16.5K+ 392.86% |
$340K - $508K
|
20.7K
$539K
|
|
|
Nov 14, 2025
Q3 2025
|
Advisor Group Holdings, Inc.
Phoenix, AZ |
BUY
|
- |
16.4K+ 107.5% |
$338K - $505K
|
31.6K
$824K
|
|
|
Nov 05, 2025
Q3 2025
|
Alps Advisors Inc
Denver, CO |
BUY
|
- |
16.3KNew |
$335K - $501K
|
16.3K
$423K
|
|
|
Nov 14, 2025
Q3 2025
|
Ci Private Wealth, LLC
Miami, FL |
BUY
|
- |
15.7KNew |
$324K - $484K
|
15.7K
$410K
|
|
|
Nov 04, 2025
Q3 2025
|
Jackson Creek Investment Advisors LLC
|
BUY
|
- |
14.7KNew |
$304K - $454K
|
14.7K
$384K
|
|
|
Nov 12, 2025
Q3 2025
|
Lpl Financial LLC
Fort Mill, SC |
BUY
|
- |
14.6KNew |
$302K - $451K
|
14.6K
$382K
|
|
|
Nov 06, 2025
Q3 2025
|
Public Sector Pension Investment Board
Montreal, A8 |
BUY
|
- |
14.3K+ 11.42% |
$295K - $441K
|
140K
$3.64M
|
|
|
Oct 27, 2025
Q3 2025
|
Janney Montgomery Scott LLC
|
BUY
|
- |
13.4KNew |
$276K - $413K
|
13.4K
$349K
|
|
|
Nov 06, 2025
Q3 2025
|
Assetmark, Inc
|
BUY
|
- |
12.7K+ 29.07% |
$262K - $392K
|
56.5K
$1.47M
|
|
|
Nov 14, 2025
Q3 2025
|
Creative Planning
Overland Park, KS |
BUY
|
- |
12.5K+ 29.32% |
$258K - $385K
|
55.1K
$1.44M
|
|
|
Nov 14, 2025
Q3 2025
|
Man Group PLC
London, X0 |
BUY
|
- |
12.1K+ 59.53% |
$249K - $372K
|
32.4K
$844K
|
|
|
Nov 13, 2025
Q3 2025
|
Jim Simons
Renaissance Technologies LLC | New York, Ny
|
BUY
|
- |
10.4K+ 1.8% |
$214K - $320K
|
587K
$15.3M
|
|
|
Nov 10, 2025
Q3 2025
|
Charles Schwab Investment Management Inc
San Francisco, CA |
BUY
|
- |
9.63K+ 2.78% |
$198K - $297K
|
356K
$9.29M
|
|
|
Nov 13, 2025
Q3 2025
|
Franklin Resources Inc
San Mateo, CA |
BUY
|
- |
9.53KNew |
$196K - $293K
|
9.53K
$248K
|
|
|
Nov 14, 2025
Q3 2025
|
Round Rock Advisors, LLC
|
BUY
|
- |
8.58KNew |
$177K - $264K
|
8.58K
$224K
|
|
|
Nov 14, 2025
Q3 2025
|
Mml Investors Services, LLC
Springfield, MA |
BUY
|
- |
8.46KNew |
$174K - $261K
|
8.46K
$221K
|
|