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.

Q1 2024 vs. Q4 2023

How the institutions holding Amphastar Pharmaceuticals, Inc. changed between Q4 2023 and Q1 2024.

All holders in Q1 2024 All holders in Q4 2023

13F holders of AMPH: Q4 2023 compared with Q1 2024
Measure	Q4 2023	Q1 2024	Change
Holders	276	271	−5
Shares	33.3M	33.6M	+264.9K (+0.8%)
Value	$2.06B	$1.47B	−$585.9M (−28.5%)

New holders (48)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q1 2024 but not at the end of Q4 2023.

Institutions new to AMPH in Q1 2024
Institution	Shares	Value	% of portfolio
Point72 Asset Management, L.P.	262,400	$11.5M	0.03%
Assenagon Asset Management S.A.	154,299	$6.78M	0.02%
Twinbeech Capital LP	117,069	$5.14M	0.11%
Ellsworth Advisors, LLC	81,165	$3.22M	0.92%
Hussman Strategic Advisors, Inc.	63,000	$2.77M	0.64%
Buck Wealth Strategies, LLC	38,318	$1.68M	0.58%
Redwood Investments, LLC	35,056	$1.52M	0.44%
Advisor OS, LLC	26,939	$1.18M	0.14%
Arrowstreet Capital, Limited Partnership	22,539	$990.0K	0.00%
HRT Financial LP	18,608	$817.0K	0.01%
Dynamic Technology Lab Private Ltd	17,689	$777.0K	0.08%
Versor Investments LP	16,700	$733.3K	0.15%
Concurrent Investment Advisors, LLC	15,778	$692.8K	0.03%
Campbell & CO Investment Adviser LLC	13,792	$605.6K	0.05%
Quantbot Technologies LP	10,948	$480.7K	0.03%
Point72 (DIFC) Ltd	10,533	$462.5K	0.04%
Sherbrooke Park Advisers LLC	9,724	$427.0K	0.08%
Stephens Inc	9,139	$401.3K	0.01%
Raymond James Financial Services Advisors, Inc.	8,884	$390.1K	0.00%
Fox Run Management, L.L.C.	7,689	$337.6K	0.07%
HSBC Holdings PLC	7,429	$326.2K	0.00%
Cynosure Management, LLC	7,254	$318.5K	0.06%
UniSuper Management Pty Ltd	6,731	$295.6K	0.00%
Graham Capital Management, L.P.	6,339	$278.3K	0.01%
Schonfeld Strategic Advisors LLC	6,229	$273.5K	0.00%
Invst, LLC	5,781	$251.1K	0.03%
Brevan Howard Capital Management LP	5,514	$242.1K	0.02%
Vontobel Holding Ltd.	4,826	$211.9K	0.00%
EMC Capital Management	3,113	$137.0K	0.08%
Point72 Hong Kong Ltd	2,400	$105.4K	0.01%
Catalyst Funds Management Pty Ltd	1,700	$74.6K	0.02%
nVerses Capital, LLC	1,600	$70.3K	0.17%
ADAR1 Capital Management, LLC	700	$30.7K	0.01%
Gladius Capital Management LP	648	$28.5K	0.03%
Whittier Trust Co	387	$17.0K	0.00%
CIBC Private Wealth Group, LLC	299	$13.0K	0.00%
NBC Securities, Inc.	165	$7.00K	0.00%
City State Bank	150	$7.00K	0.00%
Elequin Capital LP	110	$4.83K	0.00%
Eagle Bay Advisors LLC	105	$4.61K	0.00%
Public Employees Retirement System of Ohio	55	$2.42K	0.00%
Rise Advisors, LLC	50	$2.20K	0.00%
Umb Bank N A	16	$703	0.00%
Kayne Anderson Rudnick Investment Management LLC	15	$659	0.00%
Abound Wealth Management	6	$264	0.00%
Rothschild Investment LLC	5	$220	0.00%
Quest Partners LLC	1	$44	0.00%
Sofos Investments, Inc.	1	$41	0.00%

Sold out (53)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q4 2023 and filed for Q1 2024 without it.

Institutions that sold out of AMPH in Q1 2024
Institution	Shares, Q4 2023	Value, Q4 2023
Beacon Harbor Wealth Advisors, Inc.	103,140	$6.38M
D. E. Shaw & Co., Inc.	77,080	$4.77M
Penserra Capital Management LLC	48,749	$3.02M
Healthcare of Ontario Pension Plan Trust Fund	45,000	$2.78M
Lisanti Capital Growth, LLC	40,770	$2.52M
Eagle Asset Management Inc	36,042	$2.23M
Tucker Asset Management LLC	27,956	$1.73M
LPL Financial LLC	23,231	$1.44M
Exchange Traded Concepts, LLC	21,440	$1.33M
Zacks Investment Management	20,268	$1.25M
Calamos Advisors LLC	19,479	$1.20M
Algert Global LLC	16,820	$1.04M
Jackson Creek Investment Advisors LLC	16,618	$1.03M
Wakefield Asset Management LLLP	14,128	$873.8K
Natixis	13,400	$828.8K
Advisor Resource Council	13,162	$814.1K
Thoroughbred Financial Services, LLC	13,095	$809.0K
Seven Eight Capital, LP	12,948	$800.8K
HighTower Advisors, LLC	12,875	$792.0K
Skandinaviska Enskilda Banken AB (publ)	11,000	$680.4K
Westover Capital Advisors, LLC	10,483	$648.4K
Janney Montgomery Scott LLC	10,368	$641.0K
New York Life Investment Management LLC	9,245	$571.8K
SG Americas Securities, LLC	8,719	$539.0K
AXS Investments LLC	8,000	$494.8K
Jefferies Financial Group Inc.	7,800	$482.4K
Csenge Advisory Group	6,672	$412.7K
National Asset Management, Inc.	6,628	$409.9K
Tudor Investment Corp Et Al	6,436	$398.1K
MML Investors Services, LLC	5,871	$363.0K
Gallacher Capital Management LLC	5,750	$355.6K
Yorktown Management & Research Co Inc	5,700	$352.5K
Court Place Advisors, LLC	5,500	$340.2K
Dakota Wealth Management	4,910	$303.7K
O'Shaughnessy Asset Management, LLC	4,228	$261.5K
XTX Topco Ltd	4,025	$248.9K
Mariner, LLC	3,865	$239.1K
Lido Advisors, LLC	3,562	$220.3K
Leeward Financial Partners, LLC	3,507	$216.9K
Mercer Global Advisors Inc	3,399	$210.0K
Captrust Financial Advisors	3,346	$206.9K
McGlone Suttner Wealth Management, Inc.	453	$28.0K
Vima LLC	290	$17.9K
Johnson Financial Group, Inc.	259	$16.0K
Spire Wealth Management	280	$15.4K
Raleigh Capital Management Inc.	159	$9.83K
Glassman Wealth Services	92	$5.69K
EverSource Wealth Advisors, LLC	60	$3.71K
Advisory Services Network, LLC	47	$2.91K
Horizon Investments, LLC	4	$247
AdvisorNet Financial, Inc	3	$186
DiNuzzo Private Wealth, Inc.	2	$124
Rosenberg Matthew Hamilton	1	$62