Amtech Systems ASYS Institutional Ownership

NASDAQ ASYS

$14.91 -0.15 (-1.00%)

As of: Sep 11, 2026 · 3:59 PM EDT

Institutions by Trading Activity

113 Institutions

Increased 86 76.1%

Unchanged 6 5.3%

Reduced 21 18.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

67.77%

▲+10.25 pp QoQ

Shares Held by Institutions

10.46Mn

of 15.44Mn outstanding

▲+36.61% QoQ

Shares Outstanding

15.44Mn

4.98Mn held outside 13F filers

Institutional Investors

113

filed 13F for Jun 2026

▲+34 vs prior quarter

Net Shares Added (QoQ)

+2.80Mn

accumulated since last quarter

Value of Holdings

$156.44Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Amtech Systems Inc (NASDAQ:ASYS) showed up in the 13F filings of 113 institutional investors as of June 2026.

Their combined ownership stood at 67.8% of outstanding shares in June 2026, up from 57.5% in March 2026.
They increased total shares held in Amtech Systems by 36.61% from the prior quarter, while the number of investors in ASYS increased 222.86% year over year.
During the quarter, 86 of these 113 funds increased positions in ASYS, 21 reduced exposure, and 6 held steady.
Altogether, these fund groups held 10.46Mn shares in ASYS by June 2026, up by 2.8Mn shares quarter on quarter, and up 6.37Mn shares year over year.
AIGH Capital Management LLC is the top holder of Amtech Systems as of June 30, 2026, with 1.25Mn shares representing 8.11% of outstanding stock.
The largest buyers of Amtech Systems for the quarter ending June 2026 were AIGH Capital Management LLC (1.25Mn), AWM Investment Company, Inc. (690.0K), BlackRock, Inc. (618.04K), Regal Partners Ltd (237.5K), GEODE CAPITAL MANAGEMENT, LLC (152.69K).
The largest sellers of Amtech Systems for the quarter ending June 2026 were First Eagle Investment Management, LLC (816.48K), MILLENNIUM MANAGEMENT LLC (362.97K), DIMENSIONAL FUND ADVISORS LP (102.66K), JANE STREET GROUP, LLC (91.41K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (91.1K).
Per Business Quant, the top 10 investors in ASYS for the quarter ending June 2026 include AIGH Capital Management LLC (1.25Mn), First Eagle Investment Management, LLC (848.43K), BlackRock, Inc. (763.49K), AWM Investment Company, Inc. (690.0K), VANGUARD CAPITAL MANAGEMENT LLC (580.5K), ACADIAN ASSET MANAGEMENT LLC (580.28K), DIMENSIONAL FUND ADVISORS LP (426.69K), MARSHALL WACE, LLP (398.56K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (308.9K), GEODE CAPITAL MANAGEMENT, LLC (284.84K).

Form 13F Holdings

113 Institutional Holders

Report period 30 Jun, 2026

Total shares held 10.46Mn

Of outstanding 67.77%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	AIGH Capital Management LLC	0001835943	1,252,000	8.11%	▲1,252,000	0.00%	$28.90Mn
2	First Eagle Investment Management, LLC	0001325447	848,426	5.49%	▼816,480	-49.04%	$19.58Mn
3	BlackRock, Inc.	0002012383	763,487	4.94%	▲618,041	+424.93%	$17.62Mn
4	AWM Investment Company, Inc.	0001535264	690,000	4.47%	▲690,000	0.00%	$15.93Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	580,502	3.76%	▲16,175	+2.87%	$13.40Mn
6	ACADIAN ASSET MANAGEMENT LLC	0000916542	580,278	3.76%	▲113,441	+24.30%	$13.39K
7	DIMENSIONAL FUND ADVISORS LP	0000354204	426,694	2.76%	▼102,657	-19.39%	$9.84Mn
8	MARSHALL WACE, LLP	0001318757	398,564	2.58%	▼18,512	-4.44%	$9.20Mn
9	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	308,896	2.00%	▼56,491	-15.46%	$7.13Mn
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	284,836	1.84%	▲152,687	+115.54%	$6.58Mn
11	Connor, Clark & Lunn Investment Management Ltd.	0001596800	282,388	1.83%	▲108,229	+62.14%	$6.52Mn
12	RENAISSANCE TECHNOLOGIES LLC	0001037389	260,605	1.69%	▲152,509	+141.09%	$6.01Mn
13	TWO SIGMA INVESTMENTS, LP	0001179392	254,367	1.65%	▼12,489	-4.68%	$5.87Mn
14	JANE STREET GROUP, LLC	0001595888	249,465	1.62%	▼91,414	-26.82%	$5.76Mn
15	Regal Partners Ltd	0001577774	237,503	1.54%	▲237,503	0.00%	$5.48Mn
16	Qube Research & Technologies Ltd	0001729829	194,714	1.26%	▲106,197	+119.97%	$4.49Mn
17	State Street Corp	0000093751	155,849	1.01%	▲98,509	+171.80%	$3.60Mn
18	Trexquant Investment LP	0001633445	119,750	0.78%	▼54,139	-31.13%	$2.76Mn
19	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	111,472	0.72%	▲2,354	+2.16%	$2.57Mn
20	CITADEL ADVISORS LLC	0001423053	106,246	0.69%	▼668	-0.62%	$2.45Mn

Showing 1 to 20 of 113 holders