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.
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%)
Top Buyers
| 1 |
Marshall Wace
London,
United Kingdom
|
+$2.23M |
| 2 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$1.48M |
| 3 |
Acadian Asset Management
Boston,
Massachusetts
|
+$1.37M |
| 4 |
Jane Street
New York
|
+$1.35M |
| 5 |
Renaissance Technologies
New York
|
+$1.14M |
Top Sellers
| 1 |
Dimensional Fund Advisors
Austin,
Texas
|
-$1.6M |
| 2 |
Vanguard Group
Malvern,
Pennsylvania
|
-$397K |
| 3 |
EFI
EHP Funds Inc
Toronto,
Canada
|
-$234K |
| 4 |
WA
WealthTrust Axiom
Wayne,
Pennsylvania
|
-$221K |
| 5 |
GS
GWN Securities
Palm Beach Gardens,
Florida
|
-$189K |
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.