DOSSIER · 13F Holders · Q1 2026Mega-capCrowded
ASYS

AMTECH SYS INC

82 institutions still hold AMTECH SYS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 032332504·82 13F holders·last filed Mar 31, 2026
Market cap
0.4%
vs prior quarter
13F value held
$65M
53.0% inst. owned
of float
Holders
82
+98 QoQ
filers reporting
Activity
+67 / −6
+1,023 added · −868 reduced
this quarter
Concentration
14.96%
First Eagle Investment Management, LLC #1
top holder share
AI Holders Summary · Q1 2026

82 institutions reported ASYS in Q1 2026. First Eagle Investment Management, LLC leads at 15.0% of the visible book. +98 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
First Eagle Investment Management, LLC
CIK 0001325447
$10M832K0.02%Q1 2026
02
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$7M564K0.00%Q1 2026
03
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$6M529K0.00%Q1 2026
04
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$5M454K0.00%Q1 2026
05
Pacific Ridge Capital Partners, LLC
CIK 0001591546
$5M405K1.03%Q1 2026
06
MARSHALL WACE, LLP
CIK 0001318757
$4M353K0.00%Q4 2025
07
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$4M365K0.00%Q1 2026
08
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$4M341K0.00%Q1 2026
09
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$3M267K0.00%Q1 2026
10
Connor, Clark & Lunn Investment Management Ltd.
CIK 0001596800
$2M174K0.00%Q1 2026
11
Trexquant Investment LP
CIK 0001633445
$2M174K0.01%Q1 2026
12
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$2M169K0.00%Q1 2026
13
BlackRock, Inc.
CIK 0002012383
$2M145K0.00%Q1 2026
14
CITADEL ADVISORS LLC
CIK 0001423053
$2M125K0.00%Q4 2025
15
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$2M132K0.00%Q1 2026
16
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$1M109K0.03%Q1 2026
17
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$1M108K0.00%Q1 2026
18
Palisades Investment Partners, LLC
CIK 0001427373
$1M101K0.46%Q1 2026
19
SEI INVESTMENTS CO
CIK 0000350894
$1M93K0.00%Q1 2026
20
Qube Research & Technologies Ltd
CIK 0001729829
$1M89K0.00%Q1 2026
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