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Amtech Systems
ASYS

65 hedge funds and large institutions have $77.2M invested in Amtech Systems in 2025 Q4 according to their latest regulatory filings, with 23 funds opening new positions, 23 increasing their positions, 14 reducing their positions, and 11 closing their positions.

New
Increased
Maintained
Reduced
Closed

286% more call options, than puts

Call options by funds: $1.35M | Put options by funds: $350K

109% more first-time investments, than exits

New positions opened: 23 | Existing positions closed: 11

83% more capital invested

Capital invested by funds: $42.1M → $77.2M (+$35.1M)

64% more repeat investments, than reductions

Existing positions increased: 23 | Existing positions reduced: 14

20% more funds holding

Funds holding: 54 → 65 (+11)

11.07% more ownership

Funds ownership: 31.75% → 42.83% (+11%)

Holders
65
Holders Change
+11
Holders Change %
+20.37%
% of All Funds
0.79%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
23
Increased
23
Reduced
14
Closed
11
Calls
$1.35M
Puts
$350K
Net Calls
+$1M
Net Calls Change
+$532K

Top Buyers

1
Marshall Wace
Marshall Wace
United Kingdom
+$2.23M
2
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$1.48M
3
Acadian Asset Management
Acadian Asset Management
Massachusetts
+$1.37M
4
Jane Street
Jane Street
New York
+$1.35M
5
Renaissance Technologies
Renaissance Technologies
New York
+$1.14M

Top Sellers

1
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
-$1.6M
2
Vanguard Group
Vanguard Group
Pennsylvania
-$397K
3
EFI
EHP Funds Inc
Canada
-$234K
4
WA
WealthTrust Axiom
Pennsylvania
-$221K
5
GS
GWN Securities
Florida
-$189K
Name Holding Trade Value Shares
Change 		Change in
Stake
First Eagle Investment Management
1
First Eagle Investment Management
New York
$9.22M -$162K -18,000 -2%
Dimensional Fund Advisors
2
Dimensional Fund Advisors
Texas
$8.44M -$1.6M -177,708 -21%
Vanguard Group
3
Vanguard Group
Pennsylvania
$7.93M -$397K -44,101 -7%
PRCP
4
Pacific Ridge Capital Partners
Oregon
$7.88M -$168K -18,678 -3%
Marshall Wace
5
Marshall Wace
United Kingdom
$4.43M +$2.23M +247,352 +235%
Arrowstreet Capital
6
Arrowstreet Capital
Massachusetts
$4.36M +$1.48M +164,604 +90%
Jane Street
7
Jane Street
New York
$4.09M +$1.35M +150,332 +86%
Acadian Asset Management
8
Acadian Asset Management
Massachusetts
$2.96M +$1.37M +152,476 +183%
Renaissance Technologies
9
Renaissance Technologies
New York
$1.84M +$1.14M +126,296 +622%
BlackRock
10
BlackRock
New York
$1.69M +$14.5K +1,604 +1%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$1.67M +$15.5K +1,720 +1%
Citadel Advisors
12
Citadel Advisors
Florida
$1.57M +$418K +46,389 +59%
Two Sigma Investments
13
Two Sigma Investments
New York
$1.4M +$1M +111,437 New
BCM
14
Bridgeway Capital Management
Texas
$1.21M +$284K +31,518 +49%
TI
15
Trexquant Investment
Connecticut
$1.12M +$805K +89,365 New
Susquehanna International Group
16
Susquehanna International Group
Pennsylvania
$1.01M +$547K +60,693 +304%
Goldman Sachs
17
Goldman Sachs
New York
$988K +$427K +47,442 +152%
EI
18
EAM Investors
California
$933K +$669K +74,305 New
Two Sigma Advisers
19
Two Sigma Advisers
New York
$878K +$631K +69,997 New
XT
20
XTX Topco
Cayman Islands
$871K +$532K +58,996 +568%
Point72 Asset Management
21
Point72 Asset Management
Connecticut
$855K +$614K +68,154 New
Connor, Clark & Lunn Investment Management (CC&L)
22
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$839K +$603K +66,877 New
State Street
23
State Street
Massachusetts
$788K +$72.1K +8,000 +15%
OSAM
24
O'Shaughnessy Asset Management
Connecticut
$765K +$549K +60,963 New
SEI Investments
25
SEI Investments
Pennsylvania
$568K +$408K +45,233 New
1
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ASYS Hedge Fund Activity: Q4 2025 in Review

65 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in Amtech Systems (ASYS) for Q4 2025, worth a combined $77.2M — up 83% from $42.1M a quarter earlier.

Buyers outnumbered sellers: 23 funds opened new ASYS positions and 11 closed out — a net gain of 12 holders — while 23 added to existing stakes and 14 trimmed.

The largest buyer was Marshall Wace, adding an estimated $2.23M. The largest seller was Dimensional Fund Advisors, cutting an estimated $1.6M.

  • 65 institutional investors held Amtech Systems (ASYS) as of Q4 2025, up from 54 in Q3 2025.
  • Funds reported $77.2M of Amtech Systems stock for Q4 2025, up 83% quarter-over-quarter.
  • 23 funds opened new Amtech Systems positions in Q4 2025 and 11 closed out, a net change of +12 holders.
  • The largest Amtech Systems buyer in Q4 2025 was Marshall Wace, an estimated $2.23M added.
  • The largest Amtech Systems seller in Q4 2025 was Dimensional Fund Advisors, an estimated $1.6M sold.

Based on aggregated 13F filings for Q4 2025.