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 37 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	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$4.04M 909,566 shares	0.00%	-18.06K(-1.90%)Reduced	SEC filing ↗ Aug 12, 2025	▾
02	First Eagle Investment Management, LLC CIK 1325447 · View history	$3.55M 800,382 shares	0.01%	-41.54K(-4.90%)Reduced	SEC filing ↗ Aug 6, 2025	▾
03	Pacific Ridge Capital Partners, LLC CIK 1591546 · View history	$2.94M 661,367 shares	0.70%	+40.33K(+6.50%)Added	SEC filing ↗ Aug 11, 2025	▾
04	VANGUARD GROUP INC CIK 102909 · View history	$2.93M 658,907 shares	0.00%	-11.88K(-1.80%)Reduced	SEC filing ↗ Aug 11, 2025	▾
05	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$605.63K 136,374 shares	0.00%	-136(-0.10%)Reduced	SEC filing ↗ Aug 8, 2025	▾
06	BlackRock, Inc. CIK 2012383 · View history	$553.22K 124,598 shares	0.00%	+4.63K(+3.90%)Added	SEC filing ↗ Aug 12, 2025	▾
07	Ancora Advisors LLC CIK 1446114 · View history	$492.94K 111,022 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2025	▾
08	Kovack Advisors, Inc. CIK 1728321 · View history	$324.12K 73,000 shares	0.03%	-2.40K(-3.20%)Reduced	SEC filing ↗ Aug 4, 2025	▾
09	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$287.71K 64,800 shares	0.01%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2025	▾
10	STATE STREET CORP CIK 93751 · View history	$243.27K 54,790 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2025	▾
11	NORTHERN TRUST CORP CIK 73124 · View history	$207.65K 46,767 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 13, 2025	▾
12	GSA CAPITAL PARTNERS LLP CIK 1362033 · View history	$197.00K 44,419 shares	0.01%	+32.30K(+266.60%)Added	SEC filing ↗ Jul 22, 2025	▾
13	ACADIAN ASSET MANAGEMENT LLC CIK 916542 · View history	$190.00K 42,968 shares	0.00%	+384(+0.90%)Added	SEC filing ↗ Aug 7, 2025	▾
14	WealthTrust Axiom LLC CIK 1425949 · View history	$187.03K 42,124 shares	0.05%	-1.50K(-3.40%)Reduced	SEC filing ↗ Aug 13, 2025	▾
15	COMMONWEALTH EQUITY SERVICES, LLC CIK 312272 · View history	$171.00K 38,500 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 6, 2025	▾
16	CITADEL ADVISORS LLC CIK 1423053 · View history	$168.25K 37,894 shares	0.00%	-6.51K(-14.70%)Reduced	SEC filing ↗ Aug 14, 2025	▾
17	ROYAL BANK OF CANADA CIK 1000275 · Amended · View history	$158.00K 35,500 shares	0.00%	+1.50K(+4.40%)Added	SEC filing ↗ Nov 21, 2025	▾
18	Sowell Financial Services LLC CIK 1633697 · View history	$148.96K 33,549 shares	0.01%	+666(+2.00%)Added	SEC filing ↗ Jul 14, 2025	▾
19	IRONWOOD INVESTMENT MANAGEMENT LLC CIK 1127761 · View history	$123.42K 27,798 shares	0.06%	+1.51K(+5.70%)Added	SEC filing ↗ Aug 13, 2025	▾
20	Janney Montgomery Scott LLC CIK 1329948 · View history	$119.00K 26,700 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Jul 17, 2025	▾

Showing 20 / 37 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

4,095,519

Not deduplicated across managers

Disclosed value

$18.18M

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 · Q2 2025

Explore all 37 reporting institutions.

This page includes 20 of 37 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.