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.

Q4 2021 vs. Q3 2021

How the institutions holding Amphastar Pharmaceuticals, Inc. changed between Q3 2021 and Q4 2021.

All holders in Q4 2021 All holders in Q3 2021

13F holders of AMPH: Q3 2021 compared with Q4 2021
Measure	Q3 2021	Of which not filed for Q4 2021	Q4 2021	Change
Holders	140	2	168	+30
Shares	27.9M	5.71K	29.2M	+1.25M (+4.5%)
Value	$530.8M	$108.0K	$678.8M	+$148.1M (+27.9%)

2 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so the changes leave them out.

New holders (38)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q4 2021 but not at the end of Q3 2021.

Institutions new to AMPH in Q4 2021
Institution	Shares	Value	% of portfolio
Allspring Global Investments Holdings, LLC	251,961	$5.87M	0.01%
Citadel Advisors LLC	213,522	$4.97M	0.01%
Clark Capital Management Group, Inc.	80,094	$1.86M	0.02%
Alberta Investment Management Corp	52,164	$1.22M	0.01%
State of New Jersey Common Pension Fund D	38,958	$907.0K	0.00%
Yousif Capital Management, LLC	35,629	$830.0K	0.01%
Walleye Capital LLC	30,267	$705.0K	0.02%
Panagora Asset Management Inc	29,965	$698.0K	0.00%
D. E. Shaw & Co., Inc.	26,769	$623.0K	0.00%
Exchange Traded Concepts, LLC	24,983	$582.0K	0.01%
Royce & Associates LP	20,006	$466.0K	0.00%
Jane Street Group, LLC	19,366	$451.0K	0.00%
Engineers Gate Manager LP	18,094	$421.0K	0.02%
Trexquant Investment LP	13,042	$304.0K	0.02%
Cornerstone Investment Partners, LLC	12,029	$280.0K	0.02%
Diversified Trust Co	11,018	$257.0K	0.01%
MQS Management LLC	10,935	$255.0K	0.41%
Money Concepts Capital Corp	9,630	$224.0K	0.02%
Veriti Management LLC	9,565	$223.0K	0.03%
Denali Advisors LLC	5,700	$133.0K	0.05%
State of Wyoming	2,584	$60.0K	0.03%
Altshuler Shaham Ltd	2,267	$53.0K	0.00%
Signet Financial Management, LLC	1,926	$45.0K	0.01%
Lazard Asset Management LLC	1,846	$42.0K	0.00%
Allworth Financial LP	1,790	$42.0K	0.00%
First Quadrant L P	1,562	$36.0K	0.00%
Total Clarity Wealth Management, Inc.	325	$8.00K	0.00%
CWM, LLC	231	$5.00K	0.00%
Covestor Ltd	201	$5.00K	0.01%
Tarbox Family Office, Inc.	168	$4.00K	0.00%
Sageworth Trust Co of South Dakota	155	$4.00K	0.01%
Parkside Financial Bank & Trust	117	$3.00K	0.00%
City State Bank	150	$3.00K	0.00%
Massmutual Trust Co FSB	97	$2.00K	0.00%
McDonald Partners LLC	66	$1.54K	0.00%
Absolute Capital Management, LLC	66	$1.54K	0.00%
NEXT Financial Group, Inc	26	$1.00K	0.00%
Rockefeller Capital Management L.P.	9	$0	0.00%

Sold out (8)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q3 2021 and filed for Q4 2021 without it.

Institutions that sold out of AMPH in Q4 2021
Institution	Shares, Q3 2021	Value, Q3 2021
HSBC Holdings PLC	21,718	$420.0K
HRT Financial LP	14,315	$272.0K
Penserra Capital Management LLC	1,100	$20.0K
Simplex Trading, LLC	800	$16.0K
Meeder Asset Management Inc	177	$3.00K
Point72 Hong Kong Ltd	139	$3.00K
Carroll Financial Associates, Inc.	85	$1.00K
Meridian Wealth Partners, LLC	56	$1.00K

Not filed for Q4 2021 yet (2)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q3 2021 and haven't filed a 13F for Q4 2021. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding AMPH in Q3 2021 that haven't filed for Q4 2021
Institution	Shares, Q3 2021	Value, Q3 2021
First Mercantile Trust Co	5,533	$105.0K
Berman Capital Advisors, LLC	179	$3.00K