Company · Ownership research

AMTECH SYSTEMS INC ASYS

CIK 0000720500 · CUSIP 032332504

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 032332504 (ASYS), not CUSIP 032332904 (ASYS), CUSIP 032332954 (ASYS), and does not merge CUSIPs.

This page lists the top 20 of 65 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	AIGH Capital Management LLC CIK 1835943 · View history	$21.01M 1,252,000 shares	2.39%	0(0.00%)Unchanged	SEC filing ↗ Nov 2, 2026	▾
02	WASATCH ADVISORS LP CIK 814133 · View history	$19.88M 1,184,904 shares	0.15%	+1.18MNew	SEC filing ↗ Oct 13, 2026	▾
03	First Eagle Investment Management, LLC CIK 1325447 · View history	$14.07M 838,268 shares	0.02%	-10.16K(-1.20%)Reduced	SEC filing ↗ Nov 10, 2026	▾
04	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$6.53M 389,441 shares	0.01%	-190.84K(-32.90%)Reduced	SEC filing ↗ Nov 9, 2026	▾
05	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$5.81M 346,112 shares	0.00%	-80.58K(-18.90%)Reduced	SEC filing ↗ Nov 4, 2026	▾
06	RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history	$5.52M 328,854 shares	0.01%	+68.25K(+26.20%)Added	SEC filing ↗ Nov 12, 2026	▾
07	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$5.48M 326,688 shares	0.00%	+41.85K(+14.70%)Added	SEC filing ↗ Nov 6, 2026	▾
08	Connor, Clark & Lunn Investment Management Ltd. CIK 1596800 · View history	$4.85M 288,764 shares	0.01%	+6.38K(+2.30%)Added	SEC filing ↗ Nov 10, 2026	▾
09	STATE STREET CORP CIK 93751 · View history	$3.94M 234,783 shares	0.00%	+78.93K(+50.60%)Added	SEC filing ↗ Nov 12, 2026	▾
10	Palisades Investment Partners, LLC CIK 1427373 · View history	$2.51M 149,594 shares	0.73%	+46.90K(+45.70%)Added	SEC filing ↗ Nov 3, 2026	▾
11	UBS Group AG CIK 1610520 · View history	$2.46M 146,591 shares	0.00%	+67.51K(+85.40%)Added	SEC filing ↗ Nov 10, 2026	▾
12	Y-Intercept (Hong Kong) Ltd CIK 1772875 · View history	$1.49M 88,976 shares	0.03%	+59.44K(+201.30%)Added	SEC filing ↗ Oct 16, 2026	▾
13	Bank of New York Mellon Corp CIK 1390777 · View history	$1.31M 78,208 shares	0.00%	+36.67K(+88.30%)Added	SEC filing ↗ Nov 5, 2026	▾
14	LOS ANGELES CAPITAL MANAGEMENT LLC CIK 1177206 · Amended · View history	$1.19M 70,897 shares	0.00%	+7.33K(+11.50%)Added	SEC filing ↗ Nov 10, 2026	▾
15	BARCLAYS PLC CIK 312069 · View history	$762.06K 45,415 shares	0.00%	+41.70K(+1,122.80%)Added	SEC filing ↗ Nov 6, 2026	▾
16	WINTON GROUP Ltd CIK 1612063 · View history	$729.98K 43,503 shares	0.03%	+15.15K(+53.40%)Added	SEC filing ↗ Nov 12, 2026	▾
17	SEI INVESTMENTS CO CIK 350894 · View history	$674.17K 40,177 shares	0.00%	-9.32K(-18.80%)Reduced	SEC filing ↗ Nov 10, 2026	▾
18	KTF INVESTMENTS, LLC CIK 2099997 · View history	$671.20K 40,000 shares	0.07%	+23.00K(+135.30%)Added	SEC filing ↗ Oct 23, 2026	▾
19	ESSEX INVESTMENT MANAGEMENT CO LLC CIK 201772 · View history	$633.63K 37,761 shares	0.09%	0(0.00%)Unchanged	SEC filing ↗ Oct 19, 2026	▾
20	Merit Financial Group, LLC CIK 1621225 · View history	$621.46K 37,036 shares	0.00%	+36(+0.10%)Added	SEC filing ↗ Nov 6, 2026	▾

Showing 20 / 65 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

6,411,532

Not deduplicated across managers

Disclosed value

$107.39M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

AMTECH SYSTEMS INC · Q3 2026

Explore all 65 reporting institutions.

This page includes 20 of 65 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.