Latest Institutional Transactions on Amphastar Pharmaceuticals, Inc. (AMPH)
This table provides information on the latest institutional transactions involving Amphastar Pharmaceuticals, Inc. (AMPH) stock. The table includes the name of the institution, the type of operation (buy or sell), whether options were involved, the number of shares exchanged, the range of values for the transaction, and the number of shares held by the institution after the transaction has occurred.
| Report Date | Institution (Fund) | Operation | Option | Shares change | Value Range | Shares Held | Trade History |
|---|---|---|---|---|---|---|---|
|
Oct 15, 2025
Q3 2025
|
Harbor Capital Advisors, Inc.
|
BUY
|
- |
10+ 3.76% |
$206 - $308
|
276
$7.19K
|
|
|
Oct 15, 2025
Q3 2025
|
Private Trust CO Na
|
BUY
|
- |
5+ 10.2% |
$103 - $154
|
54
$1.41K
|
|
|
Oct 14, 2025
Q3 2025
|
Farther Finance Advisors, LLC
San Francisco, CA |
BUY
|
- |
737+ 356.04% |
$15.2K - $22.7K
|
944
$24.6K
|
|
|
Oct 14, 2025
Q3 2025
|
Yousif Capital Management, LLC
|
SELL
|
- |
-1.81K- 16.29% |
$37.2K - $55.6K
|
9.27K
$242K
|
|
|
Oct 14, 2025
Q3 2025
|
Exchange Traded Concepts, LLC
|
BUY
|
- |
154+ 1.57% |
$3.18K - $4.74K
|
9.99K
$260K
|
|
|
Oct 07, 2025
Q3 2025
|
Assenagon Asset Management S.A.
|
SELL
|
- |
-1.39K- 8.39% |
$28.7K - $42.9K
|
15.2K
$397K
|
|
|
Oct 02, 2025
Q3 2025
|
Gamma Investing LLC
Foster City, CA |
SELL
|
- |
-939- 43.43% |
$19.4K - $28.9K
|
1.22K
$31.9K
|
|
| Q2 2025 | |||||||
|
Dec 18, 2025
Q2 2025
|
Danske Bank A/S
Copenhagen K, G7 |
BUY
|
- |
6.86K+ 29.75% |
$157K - $194K
|
29.9K
$779K
|
|
|
Nov 21, 2025
Q2 2025
|
Royal Bank Of Canada
Toronto, A6 |
BUY
|
- |
293K+ 1122.12% |
$6.72M - $8.28M
|
319K
$8.31M
|
|
|
Sep 24, 2025
Q2 2025
|
Texas Permanent School Fund
Austin, TX |
BUY
|
- |
2.58K+ 4.96% |
$59.1K - $72.9K
|
54.5K
$1.42M
|
|
|
Aug 19, 2025
Q2 2025
|
Anchor Investment Management, LLC
Columbia, SC |
SELL
|
- |
-75- 50.0% |
$1.72K - $2.12K
|
75
$1.95K
|
|
|
Aug 15, 2025
Q2 2025
|
Wealth Collab, LLC
Bellevue, WA |
BUY
|
- |
207New |
$4.75K - $5.86K
|
207
$5.39K
|
|
|
Aug 14, 2025
Q2 2025
|
Lazard Asset Management LLC
New York, NY |
BUY
|
- |
6.34KNew |
$146K - $179K
|
6.34K
$165K
|
|
|
Aug 14, 2025
Q2 2025
|
Legato Capital Management LLC
|
BUY
|
- |
6.36K+ 21.42% |
$146K - $180K
|
36.1K
$940K
|
|
|
Aug 14, 2025
Q2 2025
|
Voya Investment Management LLC
Atlanta, GA |
SELL
|
- |
-43- 0.24% |
$987 - $1.22K
|
18.1K
$472K
|
|
|
Aug 14, 2025
Q2 2025
|
Susquehanna International Group, LLP
Bala Cynwyd, PA |
SELL
|
- |
-16.1K- 22.78% |
$370K - $456K
|
54.6K
$1.42M
|
|
|
Aug 14, 2025
Q2 2025
|
Graham Capital Management, L.P.
Rowayton, CT |
SELL
|
- |
-6.14K- 23.22% |
$141K - $174K
|
20.3K
$529K
|
|
|
Aug 14, 2025
Q2 2025
|
Engineers Gate Manager LP
New York, NY |
BUY
|
- |
14.8K+ 38.4% |
$340K - $419K
|
53.3K
$1.39M
|
|
|
Aug 14, 2025
Q2 2025
|
Janus Henderson Group PLC
London, X0 |
SELL
|
- |
-108K- 86.44% |
$2.47M - $3.04M
|
16.9K
$440K
|
|
|
Aug 14, 2025
Q2 2025
|
Aquatic Capital Management LLC
Chicago, IL |
BUY
|
- |
21.2KNew |
$487K - $600K
|
21.2K
$552K
|
|
|
Aug 14, 2025
Q2 2025
|
Pdt Partners, LLC
New York, NY |
BUY
|
- |
14.6KNew |
$336K - $414K
|
14.6K
$381K
|
|
|
Aug 14, 2025
Q2 2025
|
Occudo Quantitative Strategies LP
Fort Lauderdale, FL |
BUY
|
- |
15.8KNew |
$362K - $446K
|
15.8K
$411K
|
|
|
Aug 14, 2025
Q2 2025
|
Great West Life Assurance CO
Winnipeg, A2 |
SELL
|
- |
-1.05K- 3.35% |
$24K - $29.6K
|
30.2K
$787K
|
|
|
Aug 14, 2025
Q2 2025
|
Susquehanna Portfolio Strategies, LLC
Bala Cynwyd, PA |
BUY
|
- |
39.6KNew |
$908K - $1.12M
|
39.6K
$1.03M
|
|
|
Aug 14, 2025
Q2 2025
|
Skopos Labs, Inc.
Riverhead, NY |
BUY
|
- |
3.63K+ 2435.57% |
$83.3K - $103K
|
3.78K
$98.5K
|
|
|
Aug 14, 2025
Q2 2025
|
Twinbeech Capital LP
Purchase, NY |
BUY
|
- |
44.5K+ 101.27% |
$1.02M - $1.26M
|
88.5K
$2.31M
|
|
|
Aug 14, 2025
Q2 2025
|
Paul Tudor Jones
Tudor Investment Corp Et Al | Stamford, Ct
|
SELL
|
- |
-8.88K- 40.73% |
$204K - $251K
|
12.9K
$337K
|
|
|
Aug 14, 2025
Q2 2025
|
Schonfeld Strategic Advisors LLC
New York, NY |
BUY
|
- |
10.3KNew |
$237K - $293K
|
10.3K
$269K
|
|
|
Aug 14, 2025
Q2 2025
|
Deerfield Management Company, L.P. (Series C)
New York, NY |
BUY
|
- |
9.58KNew |
$220K - $271K
|
9.58K
$250K
|
|
|
Aug 13, 2025
Q2 2025
|
Northwestern Mutual Wealth Management CO
|
BUY
|
- |
62New |
$1.42K - $1.75K
|
62
$1.62K
|
|
|
Aug 13, 2025
Q2 2025
|
Capital Fund Management S.A.
Paris, I0 |
BUY
|
- |
40.6KNew |
$931K - $1.15M
|
40.6K
$1.06M
|
|
|
Aug 13, 2025
Q2 2025
|
Jones Financial Companies Lllp
|
BUY
|
- |
236+ 180.15% |
$5.42K - $6.68K
|
367
$9.56K
|
|
|
Aug 13, 2025
Q2 2025
|
Edgestream Partners, L.P.
Princeton, NJ |
BUY
|
- |
37.1KNew |
$852K - $1.05M
|
37.1K
$967K
|
|
|
Aug 13, 2025
Q2 2025
|
Bare Financial Services, Inc
Gap, PA |
BUY
|
- |
19New |
$436 - $538
|
19
$495
|
|
|
Aug 13, 2025
Q2 2025
|
Exodus Point Capital Management, LP
New York, NY |
SELL
|
- |
-311K- 90.55% |
$7.14M - $8.79M
|
32.4K
$845K
|
|
|
Aug 13, 2025
Q2 2025
|
Federated Hermes, Inc.
Pittsburgh, PA |
SELL
|
- |
-574K- 98.08% |
$13.2M - $16.2M
|
11.2K
$292K
|
|
|
Aug 13, 2025
Q2 2025
|
Kilter Group LLC
Rhinebeck, NY |
BUY
|
- |
15New |
$344 - $424
|
15
$391
|
|
|
Aug 13, 2025
Q2 2025
|
Jump Financial, LLC
Chicago, IL |
BUY
|
- |
63.3KNew |
$1.45M - $1.79M
|
63.3K
$1.65M
|
|
|
Aug 13, 2025
Q2 2025
|
Centiva Capital, LP
New York, NY |
BUY
|
- |
24.2KNew |
$555K - $684K
|
24.2K
$630K
|
|
|
Aug 12, 2025
Q2 2025
|
Picton Mahoney Asset Management
Toronto, A6 |
SELL
|
- |
-1.58K- 98.51% |
$36.4K - $44.8K
|
24
$625
|
|
|
Aug 12, 2025
Q2 2025
|
Concourse Financial Group Securities, Inc.
Birmingham, AL |
BUY
|
- |
0New |
$0 - $0
|
0
$0
|
|
|
Aug 12, 2025
Q2 2025
|
Trexquant Investment LP
Stamford, CT |
BUY
|
- |
63.9K+ 70.04% |
$1.47M - $1.81M
|
155K
$4.05M
|
|
|
Aug 12, 2025
Q2 2025
|
Cynosure Management, LLC
Salt Lake City, UT |
BUY
|
- |
5.42K+ 43.7% |
$124K - $153K
|
17.8K
$464K
|
|
|
Aug 11, 2025
Q2 2025
|
Td Waterhouse Canada Inc.
Toronto, A6 |
BUY
|
- |
100New |
$2.3K - $2.83K
|
100
$2.61K
|
|
|
Aug 11, 2025
Q2 2025
|
Annis Gardner Whiting Capital Advisors, LLC
Tampa, FL |
BUY
|
- |
16New |
$367 - $453
|
16
$417
|
|
|
Aug 11, 2025
Q2 2025
|
Elequin Capital LP
New York, NY |
BUY
|
- |
14New |
$321 - $396
|
14
$365
|
|
|
Aug 08, 2025
Q2 2025
|
Sg Americas Securities, LLC
|
BUY
|
- |
24.4KNew |
$561K - $692K
|
24.4K
$637K
|
|
|
Aug 08, 2025
Q2 2025
|
Clearstead Trust, LLC
Portland, ME |
BUY
|
- |
33New |
$758 - $934
|
33
$860
|
|
|
Aug 07, 2025
Q2 2025
|
1620 Investment Advisors, Inc.
Plymouth, MA |
SELL
|
- |
-1.6K- 70.05% |
$36.6K - $45.1K
|
682
$17.8K
|
|
|
Aug 06, 2025
Q2 2025
|
Fox Run Management, L.L.C.
Greenwich, CT |
BUY
|
- |
21.2KNew |
$487K - $600K
|
21.2K
$552K
|
|