Amtech Systems Inc (ASYS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

362,779Shares held by institutions

$4,015,964Value of institutional holdings

28.58%Institutional ownership %

-0.39%Shares Changed QoQ

35No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Amtech Systems Inc (NASDAQ:ASYS) has 66 institutional investors with active 13F positions as of December 2025.

Their combined ownership stood at 42.2% of outstanding shares in December 2025, up from 31.7% in September 2025.
They increased total shares held in ASYS by 41.79% quarter over quarter, and investors in Amtech Systems increased 83.33% from a year ago.
During the quarter, 48 of these 66 funds increased positions in ASYS, 13 reduced exposure, and 5 held steady.
The aggregate institutional position in Amtech Systems amounted to 6.2Mn shares as of December 2025, up by 1.83Mn shares quarter on quarter, and up 650.81K shares year over year.
First Eagle Investment Management, LLC leads ownership in ASYS with 734.35K shares as of December 31, 2025, equal to 5.0% of outstanding shares.
Leading buyers of Amtech Systems shares for the quarter ending December 2025 were MARSHALL WACE, LLP (247.35K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (164.6K), ACADIAN ASSET MANAGEMENT LLC (152.48K), JANE STREET GROUP, LLC (150.33K), RENAISSANCE TECHNOLOGIES LLC (126.3K).
The largest sellers of Amtech Systems for the quarter ending December 2025 were DIMENSIONAL FUND ADVISORS LP (177.71K), VANGUARD GROUP INC (44.1K), WealthTrust Axiom LLC (24.5K), Ancora Advisors LLC (19.0K), Pacific Ridge Capital Partners, LLC (18.68K).
Business Quant data shows the 10 biggest positions in Amtech Systems as of December 2025 are held by First Eagle Investment Management, LLC (734.35K), DIMENSIONAL FUND ADVISORS LP (672.11K), VANGUARD GROUP INC (631.9K), Pacific Ridge Capital Partners, LLC (627.81K), MARSHALL WACE, LLP (352.62K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (347.03K), JANE STREET GROUP, LLC (325.75K), ACADIAN ASSET MANAGEMENT LLC (236.01K), RENAISSANCE TECHNOLOGIES LLC (146.6K), BlackRock, Inc. (134.48K).

66 Institutional Holders

362,779 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	1,604	1.21%	$0.00
First Eagle Investment Management, LLC	31 Dec, 2025	-18,000	-2.39%	$0.00
Trexquant Investment LP	31 Dec, 2025	89,365	0.00%	$0.00
Barclays Plc	31 Dec, 2025	12,668	42,226.67%	$0.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	-177,708	-20.91%	$0.00
XTX Topco Ltd	31 Dec, 2025	69,381	0.00%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	-44,101	-6.52%	$0.00
Point72 Asset Management, L.P.	31 Dec, 2025	68,154	0.00%	$0.00
Pacific Ridge Capital Partners, LLC	31 Dec, 2025	-18,678	-2.89%	$0.00
Kovack Advisors, Inc.	31 Dec, 2025	11,850	36.86%	$0.00
MARSHALL WACE, LLP	31 Dec, 2025	247,352	234.96%	$0.00
Qube Research & Technologies Ltd	31 Dec, 2025	41,978	0.00%	$0.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	164,604	90.23%	$0.00
RITHOLTZ WEALTH MANAGEMENT	31 Dec, 2025	39,572	0.00%	$0.00
JANE STREET GROUP, LLC	31 Dec, 2025	150,332	85.70%	$0.00
Merit Financial Group, LLC	31 Dec, 2025	37,000	0.00%	$0.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	152,476	182.54%	$0.00
Quadrature Capital Ltd	31 Dec, 2025	30,542	0.00%	$0.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	126,296	622.15%	$0.00
Jump Financial, LLC	31 Dec, 2025	30,300	0.00%	$0.00

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