Who Owns AMPH US (AMPH)? -- Institutional Holders (2026-06-30)

267 institutions reported holding $900.8M of AMPH US (AMPH) in SEC 13F filings for 2026-06-30. Largest institutional holders: BlackRock, Inc. ($111.6M), Context Capital Management, LLC ($85.2M), VANGUARD GROUP INC ($53.2M), DIMENSIONAL FUND ADVISORS LP ($46.5M), DeepCurrents Investment Group LLC ($41.0M). Source: SEC Form 13F.

Rank	Institution	Value	Shares	Change
1	BlackRock, Inc.	$111.6M	5.2M	Added
2	Context Capital Management, LLC	$85.2M	0	Added
3	VANGUARD GROUP INC	$53.2M	2.6M	Trimmed
4	DIMENSIONAL FUND ADVISORS LP	$46.5M	2.3M	Added
5	DeepCurrents Investment Group LLC	$41.0M	0	New
6	OAKTREE CAPITAL MANAGEMENT LP	$37.2M	0	Added
7	STATE STREET CORP	$33.1M	1.6M	Added
8	MILLENNIUM MANAGEMENT LLC	$31.6M	31,814	Added
9	AMERICAN CENTURY COMPANIES INC	$23.7M	1.2M	Added
10	Empyrean Capital Partners, LP	$22.0M	0	Added
11	MARSHALL WACE, LLP	$21.5M	1.1M	Added
12	Nuveen, LLC	$21.4M	88,397	Added
13	GEODE CAPITAL MANAGEMENT, LLC	$19.6M	969,840	Trimmed
14	FULLER & THALER ASSET MANAGEMENT, INC.	$19.2M	949,238	Trimmed
15	D. E. Shaw & Co., Inc.	$17.9M	887,048	Added
16	CAMDEN ASSET MANAGEMENT L P /CA	$13.9M	0	Trimmed
17	LSV ASSET MANAGEMENT	$13.0M	642,014	Trimmed
18	Fort Baker Capital Management LP	$11.4M	0	New
19	RENAISSANCE TECHNOLOGIES LLC	$10.6M	525,100	Trimmed
20	GOLDMAN SACHS GROUP INC	$10.2M	505,360	Added
21	MORGAN STANLEY	$9.6M	434,840	Trimmed
22	CAPSTONE INVESTMENT ADVISORS, LLC	$9.2M	0	New
23	SYSTEMATIC FINANCIAL MANAGEMENT LP	$8.8M	437,384	Trimmed
24	UBS Group AG	$7.9M	393,110	Trimmed
25	HRT FINANCIAL LP	$7.8M	387,530	Added

来源：SEC 13F 申报文件 · 截至 2026-06-30