Amphastar Pharmaceuticals, Inc.

AMPH

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001297184

SEC filings (opens in a new tab)

In the last 90 days, Amphastar Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 5 sales; 212 institutions reported holding it in 13F filings for Q2 2026, worth $572.1M in total; no superinvestor holds it.

Q3 2024 vs. Q2 2024

How the institutions holding Amphastar Pharmaceuticals, Inc. changed between Q2 2024 and Q3 2024.

All holders in Q3 2024 All holders in Q2 2024

13F holders of AMPH: Q2 2024 compared with Q3 2024
Measure	Q2 2024	Of which not filed for Q3 2024	Q3 2024	Change
Holders	269	1	279	+11
Shares	34.4M	5.94M	35.4M	+7.01M (+24.7%)
Value	$1.37B	$237.7M	$1.72B	+$580.9M (+51.1%)

1 institution that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (43)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q3 2024 but not at the end of Q2 2024.

Institutions new to AMPH in Q3 2024
Institution	Shares	Value	% of portfolio
BlackRock, Inc.	6,032,722	$292.8M	0.01%
Boston Trust Walden Corp	539,639	$26.2M	0.18%
Hotchkis & Wiley Capital Management LLC	222,620	$10.8M	0.04%
Weiss Asset Management LP	102,358	$4.97M	0.13%
Danske Bank A/S	80,080	$3.89M	0.01%
Algert Global LLC	66,285	$3.22M	0.09%
Taika Capital, LP	36,775	$1.78M	1.34%
SG Americas Securities, LLC	35,234	$1.71M	0.01%
Chase Investment Counsel Corp	29,000	$1.41M	0.47%
Chatham Capital Group, Inc.	27,690	$1.34M	0.22%
D. E. Shaw & Co., Inc.	23,659	$1.15M	0.00%
Wellington Management Group LLP	19,723	$957.2K	0.00%
Segall Bryant & Hamill, LLC	18,968	$920.5K	0.01%
Los Angeles Capital Management LLC	16,169	$784.7K	0.00%
XTX Topco Ltd	13,891	$674.1K	0.05%
International Assets Investment Management, LLC	22,809	$470.0K	0.00%
Sterling Capital Management LLC	9,319	$452.3K	0.01%
Hohimer Wealth Management, LLC	6,994	$339.4K	0.07%
BCJ Capital Management, LLC	6,617	$321.1K	0.02%
Gsa Capital Partners LLP	6,249	$303.0K	0.02%
Cornercap Investment Counsel Inc	5,421	$263.1K	0.08%
Cetera Investment Advisers	5,237	$254.2K	0.00%
Brinker Capital Investments, LLC	4,919	$238.7K	0.00%
Orion Portfolio Solutions, LLC	4,919	$238.7K	0.00%
Two Sigma Securities, LLC	4,916	$238.6K	0.02%
Shell Asset Management Co	4,850	$235.0K	0.01%
Xponance, Inc.	4,497	$218.2K	0.00%
Cresset Asset Management, LLC	4,363	$211.7K	0.00%
Retirement Guys Formula LLC	4,185	$203.1K	0.09%
Dakota Wealth Management	4,164	$202.1K	0.00%
Asset Management One Co.,Ltd.	1,609	$78.1K	0.00%
Catalyst Funds Management Pty Ltd	800	$38.8K	0.01%
Acadian Asset Management LLC	718	$34.0K	0.00%
Northwestern Mutual Wealth Management Co	200	$9.71K	0.00%
Truvestments Capital LLC	198	$9.61K	0.00%
Spectrum Wealth Counsel, LLC	70	$3.40K	0.00%
Elequin Capital LP	60	$2.91K	0.00%
Picton Mahoney Asset Management	24	$1.00K	0.00%
Reuter James Wealth Management, LLC	20	$971	0.00%
Voisard Asset Management Group, Inc.	14	$680	0.00%
Capital Performance Advisors LLP	11	$534	0.00%
Legacy Investment Solutions, LLC	10	$455	0.00%
Legacy Wealth Managment, LLC	10	$455	0.00%

Sold out (32)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q2 2024 and filed for Q3 2024 without it.

Institutions that sold out of AMPH in Q3 2024
Institution	Shares, Q2 2024	Value, Q2 2024
Ellsworth Advisors, LLC	86,391	$3.46M
Hussman Strategic Advisors, Inc.	63,000	$2.52M
Twinbeech Capital LP	45,224	$1.81M
Jacobs Levy Equity Management, Inc	28,616	$1.14M
Capital Impact Advisors, LLC	16,425	$657.0K
Quantbot Technologies LP	12,430	$497.2K
Crossmark Global Holdings, Inc.	11,300	$452.0K
Stephens Inc	10,935	$437.4K
STRS Ohio	9,700	$388.0K
UniSuper Management Pty Ltd	9,331	$373.2K
Healthcare of Ontario Pension Plan Trust Fund	9,100	$364.0K
Man Group plc	8,776	$351.0K
Campbell & CO Investment Adviser LLC	8,668	$346.7K
Capstone Investment Advisors, LLC	7,944	$317.8K
Gallacher Capital Management LLC	6,971	$278.8K
Deerfield Management Company, L.P. (Series C)	6,623	$264.9K
Fox Run Management, L.L.C.	6,487	$259.5K
Guggenheim Capital LLC	6,184	$247.4K
MML Investors Services, LLC	5,806	$232.0K
Aigen Investment Management, LP	5,171	$206.8K
Walleye Capital LLC	5,017	$200.7K
Innealta Capital, LLC	1,371	$54.8K
Group One Trading, L.P.	814	$32.6K
Simplex Trading, LLC	815	$32.0K
ADAR1 Capital Management, LLC	700	$28.0K
Point72 Hong Kong Ltd	401	$16.0K
Trivant Custom Portfolio Group, LLC	200	$8.00K
Quarry LP	182	$7.28K
NBC Securities, Inc.	165	$6.00K
Kelly Financial Services LLC	150	$6.00K
Caitlin John, LLC	54	$2.16K
First Horizon Advisors, Inc.	36	$1.44K

Not filed for Q3 2024 yet (1)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q2 2024 and haven't filed a 13F for Q3 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding AMPH in Q2 2024 that haven't filed for Q3 2024
Institution	Shares, Q2 2024	Value, Q2 2024
BlackRock Inc.	5,942,524	$237.7M