Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

AMTECH SYSTEMS INC

CIK 0000720500ASYS· quarter ending 2026-06-30

Shares outstanding

17,508,101

as of 2026-07-31 · 10-Q cover page, filed 2026-08-05

Held by 13F filers

11,309,450

64.6% of shares outstanding

Holders

111

+32 vs 2026-03-31 · 45 new, 13 exited

Value

$260.9M

shares +51.4% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-05, as of 2026-07-31)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	ASYS · NASDAQ	17,508,101	11,309,450	64.6%	111	032332504

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	032332504	COM PAR $0.01N	111	11,309,450	17,508,101	64.6%	$261.1M	4 call / 3 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (111 of 111 · 032332504)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	First Eagle Investment Management, LLC	1,696,852	9.69%	$39.2M	+864,399 (+103.8%)
2	AIGH Capital Management LLC	1,252,000	7.15%	$28.9M	NEW
3	BlackRock, Inc.	763,487	4.36%	$17.6M	+618,041 (+424.9%)
4	AWM Investment Company, Inc.	690,000	3.94%	$15.9M	NEW
5	VANGUARD CAPITAL MANAGEMENT LLC	580,502	3.32%	$13.4M	+16,175 (+2.9%)
6	ACADIAN ASSET MANAGEMENT LLC	580,278	3.31%	$13.4M	+113,441 (+24.3%)
7	DIMENSIONAL FUND ADVISORS LP	426,694	2.44%	$9.8M	-102,657 (-19.4%)
8	MARSHALL WACE, LLP	398,564	2.28%	$9.2M	-18,512 (-4.4%)
9	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	308,896	1.76%	$7.1M	-56,491 (-15.5%)
10	GEODE CAPITAL MANAGEMENT, LLC	284,836	1.63%	$6.6M	+152,687 (+115.5%)
11	Connor, Clark & Lunn Investment Management Ltd.	282,388	1.61%	$6.5M	+108,229 (+62.1%)
12	RENAISSANCE TECHNOLOGIES LLC	260,605	1.49%	$6.0M	+152,509 (+141.1%)
13	TWO SIGMA INVESTMENTS, LP	254,367	1.45%	$5.9M	-12,489 (-4.7%)
14	JANE STREET GROUP, LLC	249,465	1.42%	$5.8M	-91,414 (-26.8%)
15	Regal Partners Ltd	237,503	1.36%	$5.5M	NEW
16	Qube Research & Technologies Ltd	194,714	1.11%	$4.5M	+106,197 (+120.0%)
17	STATE STREET CORP	155,849	0.89%	$3.6M	+98,509 (+171.8%)
18	Trexquant Investment LP	119,750	0.68%	$2.8M	-54,139 (-31.1%)
19	BRIDGEWAY CAPITAL MANAGEMENT, LLC	111,472	0.64%	$2.6M	+2,354 (+2.2%)
20	CITADEL ADVISORS LLC	106,246	0.61%	$2.5M	-668 (-0.6%)
21	Palisades Investment Partners, LLC	102,691	0.59%	$2.4M	+2,035 (+2.0%)
22	NORTHERN TRUST CORP	91,857	0.52%	$2.1M	+52,853 (+135.5%)
23	MILLENNIUM MANAGEMENT LLC	90,626	0.52%	$2.1M	-362,971 (-80.0%)
24	MORGAN STANLEY	82,999	0.47%	$1.9M	+23,907 (+40.5%)
25	VANGUARD FIDUCIARY TRUST CO	81,805	0.47%	$1.9M	+18,509 (+29.2%)
26	VANGUARD PORTFOLIO MANAGEMENT LLC	81,351	0.46%	$1.9M	NEW
27	Point72 Asset Management, L.P.	79,684	0.46%	$1.8M	+49,926 (+167.8%)
28	UBS Group AG	79,085	0.45%	$1.8M	+6,611 (+9.1%)
29	Informed Momentum Co LLC	72,579	0.41%	$1.7M	-1,726 (-2.3%)
30	BNP PARIBAS FINANCIAL MARKETS	71,293	0.41%	$1.6M	+7,752 (+12.2%)
31	XTX Topco Ltd	69,832	0.40%	$1.6M	-4,774 (-6.4%)
32	LOS ANGELES CAPITAL MANAGEMENT LLC	63,562	0.36%	$1.5M	NEW
33	O'SHAUGHNESSY ASSET MANAGEMENT, LLC	54,829	0.31%	$1.3M	+4,102 (+8.1%)
34	GOLDMAN SACHS GROUP INC	54,066	0.31%	$1.2M	+17,491 (+47.8%)
35	Capelight Capital Asset Management LP	50,000	0.29%	$1.2M	NEW
36	SEI INVESTMENTS CO	49,501	0.28%	$1.1M	-43,014 (-46.5%)
37	Man Group plc	45,224	0.26%	$1.0M	+13,553 (+42.8%)
38	NEW YORK STATE COMMON RETIREMENT FUND	44,009	0.25%	$1.0M	+2,500 (+6.0%)
39	Hillsdale Investment Management Inc.	43,080	0.25%	$994K	+17,780 (+70.3%)
40	SUSQUEHANNA INTERNATIONAL GROUP, LLP	42,842	0.24%	$989K	-91,096 (-68.0%)
41	Bank of New York Mellon Corp	41,533	0.24%	$959K	NEW
42	RITHOLTZ WEALTH MANAGEMENT	41,374	0.24%	$955K	+1,253 (+3.1%)
43	OCCUDO QUANTITATIVE STRATEGIES LP	38,616	0.22%	$891K	+18,786 (+94.7%)
44	Engineers Gate Manager LP	38,552	0.22%	$890K	+972 (+2.6%)
45	GSA CAPITAL PARTNERS LLP	37,814	0.22%	$873K	+12,184 (+47.5%)
46	ESSEX INVESTMENT MANAGEMENT CO LLC	37,761	0.22%	$872K	-55 (-0.1%)
47	Merit Financial Group, LLC	37,000	0.21%	$854K	—
48	Empowered Funds, LLC	34,672	0.20%	$800K	+2,354 (+7.3%)
49	AMERICAN CENTURY COMPANIES INC	34,536	0.20%	$797K	+7,800 (+29.2%)
50	Janney Montgomery Scott LLC	30,760	0.18%	$710K	—
51	Optimus Capital Advisors, LLC	30,000	0.17%	$692K	NEW
52	Y-Intercept (Hong Kong) Ltd	29,533	0.17%	$682K	NEW
53	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	28,468	0.16%	$657K	NEW
54	WINTON GROUP Ltd	28,350	0.16%	$654K	NEW
55	IRONWOOD INVESTMENT MANAGEMENT LLC	27,193	0.16%	$628K	-5 (-0.0%)
56	Marex Group Ltd	26,118	0.15%	$603K	NEW
57	Panoramic Capital, LLC	25,000	0.14%	$577K	NEW
58	SHIKIAR ASSET MANAGEMENT INC	22,075	0.13%	$509K	NEW
59	Dynamic Technology Lab Private Ltd	21,380	0.12%	$493K	-6,761 (-24.0%)
60	Nuveen, LLC	20,681	0.12%	$477K	NEW
61	Sowell Financial Services LLC	20,206	0.12%	$466K	—
62	VILLERE ST DENIS J & CO LLC	20,000	0.11%	$462K	—
63	Schonfeld Strategic Advisors LLC	18,976	0.11%	$438K	+172 (+0.9%)
64	LPL Financial LLC	18,026	0.10%	$416K	-987 (-5.2%)
65	WealthTrust Axiom LLC	17,800	0.10%	$411K	+1,500 (+9.2%)
66	KTF INVESTMENTS, LLC	17,000	0.10%	$392K	NEW
67	NewEdge Advisors, LLC	15,823	0.09%	$365K	-11,068 (-41.2%)
68	Integrated Quantitative Investments LLC	15,359	0.09%	$354K	NEW
69	De Lisle Partners LLP	15,000	0.09%	$346K	NEW
70	JAMES INVESTMENT RESEARCH, INC.	14,600	0.08%	$337K	—
71	STATE OF WISCONSIN INVESTMENT BOARD	13,600	0.08%	$314K	NEW
72	JPMORGAN CHASE & CO	12,038	0.07%	$248K	+11,780 (+4565.9%)
73	RHUMBLINE ADVISERS	11,987	0.07%	$277K	NEW
74	DEUTSCHE BANK AG\	11,647	0.07%	$269K	NEW
75	VIRTUS ADVISERS, LLC	11,481	0.07%	$265K	+281 (+2.5%)
76	WELLS FARGO & COMPANY/MN	10,685	0.06%	$247K	NEW
77	ExodusPoint Capital Management, LP	10,557	0.06%	$244K	NEW
78	State of Wyoming	10,170	0.06%	$235K	-13,518 (-57.1%)
79	ALLIANCEBERNSTEIN L.P.	10,000	0.06%	$117K	NEW
80	PRICE T ROWE ASSOCIATES INC /MD/	9,747	0.06%	$225K	NEW
81	Truvestments Capital LLC	9,265	0.05%	$214K	+275 (+3.1%)
82	Invesco Ltd.	9,260	0.05%	$214K	NEW
83	Legato Capital Management LLC	8,898	0.05%	$205K	NEW
84	STRS OHIO	7,900	0.05%	$182K	NEW
85	MetLife Investment Management, LLC	7,046	0.04%	$163K	NEW
86	CITIGROUP INC	5,490	0.03%	$127K	NEW
87	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	5,393	0.03%	$124K	NEW
88	OSAIC HOLDINGS, INC.	4,295	0.02%	$99K	+3,957 (+1170.7%)
89	Vanguard Global Advisers, LLC	4,282	0.02%	$99K	—
90	SIMPLEX TRADING, LLC	4,230	0.02%	$98K	NEW
91	GROUP ONE TRADING LLC	4,170	0.02%	$96K	+859 (+25.9%)
92	BARCLAYS PLC	3,714	0.02%	$86K	-7,610 (-67.2%)
93	Police & Firemen's Retirement System of New Jersey	3,455	0.02%	$80K	NEW
94	Kemnay Advisory Services Inc.	2,250	0.01%	$52K	NEW
95	Farther Finance Advisors, LLC	1,700	0.01%	$39K	NEW
96	Russell Investments Group, Ltd.	1,176	0.01%	$27K	+936 (+390.0%)
97	Legal & General Group Plc	1,136	0.01%	$26K	NEW
98	Ameritas Investment Partners, Inc.	1,063	0.01%	$25K	NEW
99	Tower Research Capital LLC (TRC)	632	0.00%	$15K	-1,309 (-67.4%)
100	Strengthening Families & Communities, LLC	490	0.00%	$11K	—
101	SBI Securities Co., Ltd.	482	0.00%	$11K	+452 (+1506.7%)
102	ROYAL BANK OF CANADA	365	0.00%	$8K	+174 (+91.1%)
103	FMR LLC	261	0.00%	$6K	+19 (+7.9%)
104	Arax Advisory Partners	227	0.00%	$5K	NEW
105	FIRST UNITED BANK & TRUST	220	0.00%	$5K	NEW
106	Parallel Advisors, LLC	200	0.00%	$5K	NEW
107	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	161	0.00%	$4K	NEW
108	JONES FINANCIAL COMPANIES LLLP	118	0.00%	$2K	NEW
109	Sterling Capital Management LLC	41	0.00%	$946	NEW
110	Horrell Capital Management, Inc.	25	0.00%	$1K	NEW
111	Caitong International Asset Management Co., Ltd	4	0.00%	$92	NEW

Exited since 2026-03-31 (13 filers; largest 13 shown)

Pacific Ridge Capital Partners, LLC	−405,371
Squarepoint Ops LLC	−38,690
Hudson Bay Capital Management LP	−24,083
Brevan Howard Capital Management LP	−23,714
BANK OF AMERICA CORP /DE/	−22,652
Virtu Financial LLC	−21,210
HRT FINANCIAL LP	−20,181
Jump Financial, LLC	−13,280
Walleye Capital LLC	−12,197
Kovack Advisors, Inc.	−12,100
OMERS ADMINISTRATION Corp	−10,400
IFP Advisors, Inc	−1,019
CWM, LLC	−301

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
First Eagle Investment Management, LLC	SCHEDULE 13G/A	2026-08-06	2026-06-30	848,697	4.9%
AIGH Capital Management LLC	SCHEDULE 13G	2026-07-27	2026-06-30	1,252,000	7.2%
Orin Hirschman	SCHEDULE 13G	2026-07-27	2026-06-30	1,252,000	7.2%
Cornice Fiduciary Management LLC, as Trustee under Trust Agreement dated December 23, 1989 FBO the issue of Jonathan D. Sackler	SCHEDULE 13D/A	2026-06-02	2026-06-01	1,386,312	9.6%
M3C Holdings LLC	SCHEDULE 13D/A	2026-06-02	2026-06-01	263,688	1.8%
OIH LLC	SCHEDULE 13D/A	2026-06-02	2026-06-01	22,917	0.2%
Piton Capital Partners LLC	SCHEDULE 13D/A	2026-06-02	2026-06-01	600,000	4.1%
Robert Averick	SCHEDULE 13D/A	2026-06-02	2026-06-01	2,986,341	20.6%
Wax Asset Management, LLC	SCHEDULE 13G/A	2026-02-13	2025-12-31	1,319,773	9.2%
Dimensional Fund Advisors LP	SCHEDULE 13G/A	2026-01-21	2025-12-31	672,107	4.7%
ROYCE & ASSOCIATES LP	SCHEDULE 13G/A	2025-04-04	2025-03-31	587,986	4.11%
Pacific Ridge Capital Partners, LLC	SCHEDULE 13G/A	2025-02-12	2024-12-31	652,393	4.6%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.