Amtech Systems
ASYS
54 hedge funds and large institutions have $42.1M invested in Amtech Systems in 2025 Q3 according to their latest regulatory filings, with 24 funds opening new positions, 8 increasing their positions, 17 reducing their positions, and 6 closing their positions.
46,800% more call options, than puts
Call options by funds: $469K | Put options by funds: $1K
300% more first-time investments, than exits
New positions opened: 24 | Existing positions closed: 6
131% more capital invested
Capital invested by funds: $18.2M → $42.1M (+$23.9M)
50% more funds holding
Funds holding: 36 → 54 (+18)
3.14% more ownership
Funds ownership: 28.61% → 31.75% (+3.1%)
53% less repeat investments, than reductions
Existing positions increased: 8 | Existing positions reduced: 17
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Arrowstreet Capital
Boston,
Massachusetts
|
+$1.11M |
| 2 |
Jane Street
New York
|
+$1.07M |
| 3 |
Marshall Wace
London,
United Kingdom
|
+$643K |
| 4 |
Acadian Asset Management
Boston,
Massachusetts
|
+$248K |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$248K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AA
Ancora Advisors
Cleveland,
Ohio
|
-$463K |
| 2 |
Dimensional Fund Advisors
Austin,
Texas
|
-$365K |
| 3 |
First Eagle Investment Management
New York
|
-$294K |
| 4 |
KA
Kovack Advisors
Ft. Lauderdale,
Florida
|
-$250K |
| 5 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$217K |
ASYS Hedge Fund Activity: Q3 2025 in Review
54 of the 7,645 institutional investors tracked by Wall St. Rank reported a position in Amtech Systems (ASYS) for Q3 2025, worth a combined $42.1M — up 131% from $18.2M a quarter earlier.
Buyers outnumbered sellers: 24 funds opened new ASYS positions and 6 closed out — a net gain of 18 holders — while 8 added to existing stakes and 17 trimmed.
The largest buyer was Arrowstreet Capital, opening a new position worth an estimated $1.11M. The largest seller was Ancora Advisors, cutting an estimated $463K.
- 54 institutional investors held Amtech Systems (ASYS) as of Q3 2025, up from 36 in Q2 2025.
- Funds reported $42.1M of Amtech Systems stock for Q3 2025, up 131% quarter-over-quarter.
- 24 funds opened new Amtech Systems positions in Q3 2025 and 6 closed out, a net change of +18 holders.
- The largest Amtech Systems buyer in Q3 2025 was Arrowstreet Capital, an estimated $1.11M added.
- The largest Amtech Systems seller in Q3 2025 was Ancora Advisors, an estimated $463K sold.
Based on aggregated 13F filings for Q3 2025.