Amtech Systems Inc
ASYS- Exchange
- Nasdaq
- Industry
- Special Industry Machinery, NEC
- SEC CIK
- 0000720500
In the last 90 days, Amtech Systems Inc insiders filed 2 open-market purchases and 0 sales; 112 institutions reported holding it in 13F filings for Q2 2026, worth $261.1M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Amtech Systems Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 65
- +12 vs. Q3 2025
- Shares held
- 6.15M
- +1.63M (+36.0%) vs. Q3 2025
- Total value
- $77.2M
- +$35.3M (+84.4%) vs. Q3 2025
- New holders
- 23
- 23 more added
- Sold out
- 11
- 14 more reduced
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ASYS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 112 | $261.1M |
| Q1 2026 | 79 | $87.4M |
| Q4 2025 | 65 | $77.2M |
| Q3 2025 | 54 | $42.1M |
| Q2 2025 | 36 | $18.3M |
| Q1 2025 | 37 | $23.2M |
| Q4 2024 | 35 | $30.2M |
| Q3 2024 | 34 | $35.4M |
| Q2 2024 | 34 | $36.4M |
| Q1 2024 | 41 | $33.9M |
| Q4 2023 | 45 | $25.9M |
| Q3 2023 | 42 | $51.2M |
| Q2 2023 | 44 | $63.2M |
| Q1 2023 | 44 | $66.7M |
| Q4 2022 | 49 | $50.2M |
| Q3 2022 | 43 | $76.1M |
| Q2 2022 | 40 | $65.7M |
| Q1 2022 | 46 | $94.6M |
| Q4 2021 | 50 | $96.5M |
| Q3 2021 | 52 | $77.6M |
| Q2 2021 | 56 | $65.2M |
| Q1 2021 | 64 | $83.7M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Amtech Systems Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| First Eagle Investment Management, LLC | 734,346 | $9.22M | 0.02% | −18,000−2.4% | Reduced |
| Dimensional Fund Advisors LP | 672,107 | $8.44M | 0.00% | −177,708−20.9% | Reduced |
| Vanguard Group Inc | 631,905 | $7.93M | 0.00% | −44,101−6.5% | Reduced |
| Pacific Ridge Capital Partners, LLC | 627,811 | $7.88M | 1.73% | −18,678−2.9% | Reduced |
| Marshall Wace, LLP | 352,624 | $4.43M | 0.00% | +247,352+235.0% | Added |
| Arrowstreet Capital, Limited Partnership | 347,033 | $4.36M | 0.00% | +164,604+90.2% | Added |
| Jane Street Group, LLC | 325,754 | $4.09M | 0.00% | +150,332+85.7% | Added |
| Acadian Asset Management LLC | 236,008 | $2.96M | 0.00% | +152,476+182.5% | Added |
| Renaissance Technologies LLC | 146,596 | $1.84M | 0.00% | +126,296+622.1% | Added |
| BlackRock, Inc. | 134,477 | $1.69M | 0.00% | +1,604+1.2% | Added |
| Geode Capital Management, LLC | 133,001 | $1.67M | 0.00% | +1,720+1.3% | Added |
| Citadel Advisors LLC | 124,843 | $1.57M | 0.00% | +46,389+59.1% | Added |
| Two Sigma Investments, LP | 111,437 | $1.40M | 0.00% | +111,437 | New |
| Bridgeway Capital Management, LLC | 96,318 | $1.21M | 0.03% | +31,518+48.6% | Added |
| Trexquant Investment LP | 89,365 | $1.12M | 0.01% | +89,365 | New |
| Susquehanna International Group, LLP | 80,630 | $1.01M | 0.00% | +60,693+304.4% | Added |
| Goldman Sachs Group Inc | 78,693 | $987.6K | 0.00% | +47,442+151.8% | Added |
| EAM Investors, LLC | 74,305 | $932.5K | 0.10% | +74,305 | New |
| Two Sigma Advisers, LP | 69,997 | $878.5K | 0.00% | +69,997 | New |
| XTX Topco Ltd | 69,381 | $870.7K | 0.02% | +58,996+568.1% | Added |
| Point72 Asset Management, L.P. | 68,154 | $855.3K | 0.00% | +68,154 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 66,877 | $839.3K | 0.00% | +66,877 | New |
| State Street Corp | 62,790 | $788.0K | 0.00% | +8,000+14.6% | Added |
| O'Shaughnessy Asset Management, LLC | 60,963 | $765.1K | 0.00% | +60,963 | New |
| SEI Investments Co | 45,233 | $567.7K | 0.00% | +45,233 | New |
| Qube Research & Technologies Ltd | 41,978 | $526.8K | 0.00% | +41,978 | New |
| Ritholtz Wealth Management | 39,572 | $496.6K | 0.01% | +39,572 | New |
| Northern Trust Corp | 39,177 | $491.7K | 0.00% | +2,474+6.7% | Added |
| Essex Investment Management Co LLC | 37,816 | $474.6K | 0.07% | 00.0% | Unchanged |
| Merit Financial Group, LLC | 37,000 | $464.4K | 0.00% | +37,000 | New |
| Gsa Capital Partners LLP | 30,748 | $386.0K | 0.03% | −3,069−9.1% | Reduced |
| Janney Montgomery Scott LLC | 30,760 | $386.0K | 0.00% | +4,060+15.2% | Added |
| Quadrature Capital Ltd | 30,542 | $383.3K | 0.00% | +30,542 | New |
| Jump Financial, LLC | 30,300 | $380.3K | 0.00% | +30,300 | New |
| Ironwood Investment Management LLC | 27,537 | $345.6K | 0.15% | −54−0.2% | Reduced |
| BNP Paribas Arbitrage, SA | 26,568 | $333.4K | 0.00% | +26,568 | New |
| Millennium Management LLC | 22,748 | $285.5K | 0.00% | +10,802+90.4% | Added |
| Kovack Advisors, Inc. | 22,000 | $276.1K | 0.01% | −10,150−31.6% | Reduced |
| Centiva Capital, LP | 21,815 | $273.8K | 0.02% | +21,815 | New |
| Hudson Bay Capital Management LP | 21,553 | $270.5K | 0.00% | +21,553 | New |
| Occudo Quantitative Strategies LP | 21,293 | $267.2K | 0.02% | +21,293 | New |
| American Century Companies Inc | 20,666 | $259.4K | 0.00% | +10,043+94.5% | Added |
| Villere St Denis J & Co LLC | 20,000 | $251.0K | 0.03% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 16,677 | $209.3K | 0.00% | +16,677 | New |
| Omers Administration Corp | 16,600 | $208.3K | 0.00% | +16,600 | New |
| Ancora Advisors, LLC | 16,247 | $203.9K | 0.00% | −19,000−53.9% | Reduced |
| Sowell Financial Services LLC | 16,156 | $202.8K | 0.01% | +16,156 | New |
| James Investment Research Inc | 14,600 | $183.2K | 0.02% | 00.0% | Unchanged |
| GWM Advisors LLC | 14,600 | $183.2K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 13,211 | $165.8K | 0.00% | +5,473+70.7% | Added |
| Barclays PLC | 12,698 | $159.4K | 0.00% | +12,668+42,226.7% | Added |
| Graham Capital Management, L.P. | 12,608 | $158.2K | 0.01% | +12,608 | New |
| LPL Financial LLC | 11,993 | $150.5K | 0.00% | −822−6.4% | Reduced |
| WealthTrust Axiom LLC | 11,300 | $141.8K | 0.04% | −24,500−68.4% | Reduced |
| UBS Group AG | 9,810 | $123.1K | 0.00% | +7,780+383.3% | Added |
| Group One Trading, L.P. | 7,549 | $94.7K | 0.00% | +5,525+273.0% | Added |
| Kestra Advisory Services, LLC | 7,050 | $88.5K | 0.00% | +7,050 | New |
| Citigroup Inc | 2,388 | $30.0K | 0.00% | +2,387+238,700.0% | Added |
| Simplex Trading, LLC | 681 | $8.55K | 0.00% | +681 | New |
| Advisor Group Holdings, Inc. | 645 | $8.09K | 0.00% | −135−17.3% | Reduced |
| Strengthening Families & Communities, LLC | 490 | $6.15K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 428 | $5.37K | 0.00% | −237−35.6% | Reduced |
| SBI Securities Co., Ltd. | 130 | $1.63K | 0.00% | −21−13.9% | Reduced |
| Royal Bank of Canada | 46 | $1.00K | 0.00% | +10+27.8% | Added |
| Bank of America Corp | 78 | $979 | 0.00% | −1,608−95.4% | Reduced |
| EHP Funds Inc. | 0 | $0 | 0.00% | −25,242−100.0% | Sold out |
| GWN Securities Inc. | 0 | $0 | 0.00% | −20,423−100.0% | Sold out |
| Wexford Capital LP | 0 | $0 | 0.00% | −18,808−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −18,000−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −16,463−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −13,442−100.0% | Sold out |
| Thompson Davis & Co., Inc. | 0 | $0 | 0.00% | −13,250−100.0% | Sold out |
| Williams & Novak, LLC | 0 | $0 | 0.00% | −10,250−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −2,563−100.0% | Sold out |
| Signaturefd, LLC | 0 | $0 | 0.00% | −400−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | – | – | – | – | Not filed |