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 2024 vs. Q3 2024

How the institutions holding Amphastar Pharmaceuticals, Inc. changed between Q3 2024 and Q4 2024.

All holders in Q4 2024 All holders in Q3 2024

13F holders of AMPH: Q3 2024 compared with Q4 2024
Measure	Q3 2024	Of which not filed for Q4 2024	Q4 2024	Change
Holders	279	2	264	−13
Shares	35.4M	126.2K	35.2M	−142.7K (−0.4%)
Value	$1.72B	$6.12M	$1.31B	−$405.9M (−23.7%)

2 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so the changes leave them out.

New holders (37)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q4 2024 but not at the end of Q3 2024.

Institutions new to AMPH in Q4 2024
Institution	Shares	Value	% of portfolio
Boston Partners	426,636	$15.8M	0.02%
Systematic Financial Management LP	246,348	$9.15M	0.23%
Raymond James Financial Inc	92,904	$3.45M	0.00%
Campbell & CO Investment Adviser LLC	47,566	$1.77M	0.14%
Twinbeech Capital LP	46,797	$1.74M	0.03%
Aristeia Capital LLC	43,235	$1.61M	0.06%
Quantbot Technologies LP	25,454	$945.1K	0.03%
Polaris Capital Management, LLC	24,500	$909.7K	0.04%
Man Group plc	21,825	$810.4K	0.00%
Fox Run Management, L.L.C.	18,526	$687.9K	0.12%
Jain Global LLC	17,974	$667.4K	0.02%
Illumine Investment Management, LLC	17,049	$633.0K	0.52%
D.A. Davidson & Co.	11,244	$417.5K	0.00%
Walleye Capital LLC	8,666	$321.8K	0.00%
Police & Firemen's Retirement System of New Jersey	8,288	$307.7K	0.00%
KLP Kapitalforvaltning AS	7,400	$274.8K	0.00%
Significant Wealth Partners LLC	7,135	$264.9K	0.14%
Aquatic Capital Management LLC	7,036	$261.2K	0.01%
Tiemann Investment Advisors, LLC	6,962	$258.5K	0.11%
Brevan Howard Capital Management LP	6,905	$256.4K	0.01%
Axq Capital, LP	6,621	$245.8K	0.11%
Yorktown Management & Research Co Inc	6,600	$245.1K	0.24%
Aster Capital Management (DIFC) Ltd	2,869	$106.5K	0.04%
GF Fund Management Co. Ltd.	1,010	$37.5K	0.00%
Caitong International Asset Management Co., Ltd	604	$22.4K	0.02%
Simplex Trading, LLC	548	$20.0K	0.00%
Anchor Investment Management, LLC	150	$5.57K	0.00%
Canada Pension Plan Investment Board	100	$3.71K	0.00%
Park Square Financial Group, LLC	64	$2.38K	0.00%
Private Trust Co NA	48	$1.78K	0.00%
Skopos Labs, Inc.	45	$1.67K	0.00%
SBI Securities Co., Ltd.	40	$1.49K	0.00%
Creative Planning	13	$483	0.00%
Cornerstone Planning Group LLC	13	$482	0.00%
Bruce G. Allen Investments, LLC	9	$334	0.00%
IFP Advisors, Inc	0	$74	0.00%
EverSource Wealth Advisors, LLC	1	$37	0.00%

Sold out (50)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q3 2024 and filed for Q4 2024 without it.

Institutions that sold out of AMPH in Q4 2024
Institution	Shares, Q3 2024	Value, Q3 2024
Boone Capital Management LLC	316,556	$15.4M
Weiss Asset Management LP	102,358	$4.97M
Moody Aldrich Partners LLC	100,340	$4.87M
Danske Bank A/S	80,080	$3.89M
Brandywine Global Investment Management, LLC	75,053	$3.70M
Algert Global LLC	66,285	$3.22M
Taika Capital, LP	36,775	$1.78M
SG Americas Securities, LLC	35,234	$1.71M
AlphaCentric Advisors LLC	30,000	$1.46M
Chase Investment Counsel Corp	29,000	$1.41M
Winton Group Ltd	23,915	$1.16M
Los Angeles Capital Management LLC	16,169	$784.7K
Cubist Systematic Strategies, LLC	16,132	$782.9K
XTX Topco Ltd	13,891	$674.1K
Guidance Capital, Inc	10,388	$528.1K
Juncture Wealth Strategies, LLC	10,652	$516.9K
International Assets Investment Management, LLC	22,809	$470.0K
Sherbrooke Park Advisers LLC	7,140	$346.5K
ExodusPoint Capital Management, LP	6,961	$338.0K
Everence Capital Management Inc	6,470	$314.0K
Tudor Investment Corp Et Al	6,115	$296.8K
Rafferty Asset Management, LLC	5,714	$277.3K
Commonwealth Equity Services, LLC	5,651	$274.0K
First Hawaiian Bank	5,519	$267.8K
Court Place Advisors, LLC	5,500	$266.9K
Cetera Investment Advisers	5,237	$254.2K
Pictet Asset Management Holding SA	5,116	$248.3K
Hancock Whitney Corp	5,109	$247.9K
Petrus Trust Company, LTA	5,013	$243.3K
Brinker Capital Investments, LLC	4,919	$238.7K
Orion Portfolio Solutions, LLC	4,919	$238.7K
Two Sigma Securities, LLC	4,916	$238.6K
Xponance, Inc.	4,497	$218.2K
Cresset Asset Management, LLC	4,363	$211.7K
Retirement Guys Formula LLC	4,185	$203.1K
Point72 (DIFC) Ltd	3,954	$191.9K
nVerses Capital, LLC	2,600	$126.2K
Globeflex Capital L P	1,210	$58.7K
Point72 Asia (Singapore) Pte. Ltd.	1,144	$55.5K
Catalyst Funds Management Pty Ltd	800	$38.8K
Acadian Asset Management LLC	718	$34.0K
Steward Partners Investment Advisory, LLC	400	$19.4K
Northwestern Mutual Wealth Management Co	200	$9.71K
Spectrum Wealth Counsel, LLC	70	$3.40K
Rise Advisors, LLC	70	$3.40K
Elequin Capital LP	60	$2.91K
Carolinas Wealth Consulting LLC	33	$1.59K
Reuter James Wealth Management, LLC	20	$971
Voisard Asset Management Group, Inc.	14	$680
Capital Performance Advisors LLP	11	$534

Not filed for Q4 2024 yet (2)

Institutions that held Amphastar Pharmaceuticals, Inc. at the end of Q3 2024 and haven't filed a 13F for Q4 2024. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding AMPH in Q3 2024 that haven't filed for Q4 2024
Institution	Shares, Q3 2024	Value, Q3 2024
Raymond James & Associates	116,677	$5.66M
Raymond James Financial Services Advisors, Inc.	9,517	$461.9K