Who Owns AMTECH SYS INC (ASYS)? -- Institutional Holders (2026-03-31)

86 institutions reported holding $87.8M of AMTECH SYS INC (ASYS) in SEC 13F filings for 2026-03-31. Largest institutional holders: First Eagle Investment Management, LLC ($9.7M), VANGUARD CAPITAL MANAGEMENT LLC ($6.6M), DIMENSIONAL FUND ADVISORS LP ($6.2M), ACADIAN ASSET MANAGEMENT LLC ($5.4M), MILLENNIUM MANAGEMENT LLC ($5.3M). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1First Eagle Investment Management, LLC$9.7M832,453Added
2VANGUARD CAPITAL MANAGEMENT LLC$6.6M564,327New
3DIMENSIONAL FUND ADVISORS LP$6.2M529,351Trimmed
4ACADIAN ASSET MANAGEMENT LLC$5.4M466,837Added
5MILLENNIUM MANAGEMENT LLC$5.3M453,597Added
6MARSHALL WACE, LLP$4.9M417,076Added
7Pacific Ridge Capital Partners, LLC$4.7M405,371Trimmed
8ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$4.3M365,387Added
9JANE STREET GROUP, LLC$4.0M340,879Added
10TWO SIGMA INVESTMENTS, LP$3.1M266,856Added
11Connor, Clark & Lunn Investment Management Ltd.$2.0M174,159Added
12Trexquant Investment LP$2.0M173,889Added
13SUSQUEHANNA INTERNATIONAL GROUP, LLP$2.0M168,638Trimmed
14BlackRock, Inc.$1.7M145,446Added
15GEODE CAPITAL MANAGEMENT, LLC$1.5M132,149Trimmed
16CITADEL ADVISORS LLC$1.5M129,714Added
17BRIDGEWAY CAPITAL MANAGEMENT, LLC$1.3M109,118Added
18RENAISSANCE TECHNOLOGIES LLC$1.3M108,096Trimmed
19Palisades Investment Partners, LLC$1.2M100,656New
20SEI INVESTMENTS CO$1.1M92,515Added
21Qube Research & Technologies Ltd$1.0M88,517Added
22XTX Topco Ltd$871,39874,606Added
23Informed Momentum Co LLC$867,88274,305Hold
24UBS Group AG$846,49672,474Added
25BNP PARIBAS FINANCIAL MARKETS$742,15963,541Added

Source: SEC Form 13F filings · as of 2026-03-31