Ticker · CUSIP 032332504

ASYS

AMTECH SYS INC

···Share

Holders (tracked)

Combined shares

1,208,124

Combined value

$15.16M

Last close

$16.21

Quarter

2025Q4

Price is +29.2% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$16.21+12.63 (+352.79%)H $18.28 · L $3.35 · Avg Vol 208K

Position opened

Tracked holders · last 8 quarters

+2 vs previous quarter over the last 8.

SEC event timeline

9 events

Ken Griffin (Citadel Advisors) added2026-02-17
+46,389 shares · 2025Q4
Position
Two Sigma Investments opened position2026-02-17
+111,437 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) added2026-02-17
+10,802 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+68,154 shares · 2025Q4
Position
Renaissance Technologies added2026-02-12
+126,296 shares · 2025Q4
Position
First Eagle Investment Management trimmed2026-02-04
−18,000 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) opened position2025-11-14
+11,946 shares · 2025Q3
Position
Renaissance Technologies added2025-11-13
+5,800 shares · 2025Q3
Position
First Eagle Investment Management trimmed2025-11-12
−48,036 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for ASYS →

Follow-the-investor returns

If you'd copied each holder of ASYS…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
First Eagle Investment Management	2021Q2	$7.39	+119.3%	$11.9M
Izzy Englander (Millennium Mgmt)	2017Q2	$9.23	+75.7%	$369K
Ken Griffin (Citadel Advisors)	2017Q3	$9.81	+65.3%	$2.0M
Renaissance Technologies	2016Q1	$11.93	+35.9%	$2.4M
Two Sigma Investments	2017Q4	$12.39	+30.8%	$1.8M
Steve Cohen (Point72)	2025Q4	$12.55	+29.2%	$1.1M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions2

Two Sigma Investments
+111,437
$1.4M
Steve Cohen (Point72)
+68,154
$855K

Added to3

Renaissance Technologies
+126,296
$1.6M
Ken Griffin (Citadel Advisors)
+46,389
$582K
Izzy Englander (Millennium Mgmt)
+10,802
$136K

Trimmed1

First Eagle Investment Management
−18,000
$226K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2022Q1	6	299,257	$3.0M	—
2022Q2	4	357,351	$2.6M	-2
2022Q3	6	488,408	$4.2M	+2
2022Q4	8	689,191	$5.2M	+2
2023Q1	8	662,672	$6.3M	—
2023Q2	6	679,522	$6.5M	-2
2023Q3	5	725,281	$5.5M	-1
2023Q4	6	783,315	$3.3M	+1
2024Q1	6	826,480	$4.5M	—
2024Q2	6	857,682	$5.0M	—
2024Q3	5	843,788	$4.9M	-1
2024Q4	6	915,884	$5.0M	+1
2025Q1	5	918,928	$4.4M	-1
2025Q2	4	871,076	$3.9M	-1
2025Q3	4	863,046	$8.0M	—
2025Q4	6	1,208,124	$15.2M	+2

Who owns ASYS

6 super-investors · 2025Q4

Tracked stake

1.21M

Combined value

$15M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New2Added3Trim1

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	First Eagle Investment Management	734.3K	$9M	0.0%	Trim−18.0K
2	Renaissance Technologies	146.6K	$2M	0.0%	Added+126.3K
3	Ken Griffin Citadel Advisors	124.8K	$2M	0.0%	Added+46.4K
4	Two Sigma Investments	111.4K	$1M	0.0%	New+111.4K
5	Steve Cohen Point72	68.2K	$855K	0.0%	New+68.2K	—
6	Izzy Englander Millennium Mgmt	22.7K	$285K	0.0%	Added+10.8K

Recent moves

20 transactions

ADDKen Griffin (Citadel Advisors)
+46,389 · 2025Q4
NEWTwo Sigma Investments
+111,437 · 2025Q4
NEWSteve Cohen (Point72)
+68,154 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+10,802 · 2025Q4
ADDRenaissance Technologies
+126,296 · 2025Q4
TRIMFirst Eagle Investment Management
−18,000 · 2025Q4
NEWIzzy Englander (Millennium Mgmt)
+11,946 · 2025Q3
ADDRenaissance Technologies
+5,800 · 2025Q3
TRIMFirst Eagle Investment Management
−48,036 · 2025Q3
ADDRenaissance Technologies
+1,800 · 2025Q2
TRIMFirst Eagle Investment Management
−41,540 · 2025Q2
SOLDIzzy Englander (Millennium Mgmt)
−22,706 · 2025Q1
ADDRenaissance Technologies
+1,000 · 2025Q1
ADDFirst Eagle Investment Management
+7,000 · 2025Q1
ADDIzzy Englander (Millennium Mgmt)
+10,281 · 2024Q4
NEWRenaissance Technologies
+11,700 · 2024Q4
ADDFirst Eagle Investment Management
+51,555 · 2024Q4
TRIMIzzy Englander (Millennium Mgmt)
−13,935 · 2024Q3
ADDFirst Eagle Investment Management
+107,523 · 2024Q3
ADDIzzy Englander (Millennium Mgmt)
+270 · 2024Q2

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