ASYS Institutional Ownership & Shareholders
AMTECH SYSTEMS INC (ASYS) is currently held by 114 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $261.41M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Aigh Capital Management Llc is currently the largest disclosed institutional shareholder of ASYS tracked by InsiderSet, reporting ownership valued at approximately $28.90M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $20.04M, representing an estimated loss of -30.63% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 54% of the total disclosed ASYS value among the investors covered in this analysis. Major shareholders include Aigh Capital Management Llc, First Eagle U.S. Value, Blackrock, Inc., and several other long-term asset managers with concentrated positions in AMTECH SYSTEMS INC (ASYS).
This page ranks the largest institutional ASYS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
114
Total Reported Value
$261.41M
Largest Holder
Aigh Capital Management Llc
Largest Position
$28.90M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
133
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Aigh Capital Management Llc | 2.62% | 1,252,000 | $28,896,160 | $20,044,520 | -$8,851,640 | -30.63% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.03% | 848,426 | $19,581,672 | $13,583,300 | -$5,998,372 | -30.63% |
| Blackrock, Inc. | 0.00% | 763,487 | $17,621,279 | $12,223,427 | -$5,397,852 | -30.63% | |
| Awm Investment Company, Inc. | 1.38% | 690,000 | $15,925,200 | $11,046,900 | -$4,878,300 | -30.63% | |
| Vanguard Capital Management Llc | 0.00% | 580,502 | $13,397,986 | $9,293,837 | -$4,104,149 | -30.63% | |
| Acadian Asset Management Llc | 0.02% | 580,278 | $13,388,000 | $9,290,251 | -$4,097,749 | -30.61% | |
| Dimensional Fund Advisors Lp | 0.00% | 426,694 | $9,842,868 | $6,831,371 | -$3,011,497 | -30.60% | |
| Marshall Wace, Llp | 0.01% | 398,564 | $9,198,858 | $6,381,010 | -$2,817,848 | -30.63% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 308,896 | $7,129,320 | $4,945,425 | -$2,183,895 | -30.63% | |
| Geode Capital Management, Llc | 0.00% | 284,836 | $6,575,423 | $4,560,224 | -$2,015,199 | -30.65% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | 282,388 | $6,517,515 | $4,521,032 | -$1,996,483 | -30.63% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 260,605 | $6,014,763 | $4,172,286 | -$1,842,477 | -30.63% |
| Two Sigma Investments, Lp | 0.00% | 254,367 | $5,870,790 | $4,072,416 | -$1,798,374 | -30.63% | |
| Jane Street Group, Llc | 0.00% | 249,465 | $5,757,652 | $3,993,935 | -$1,763,717 | -30.63% | |
| Regal Partners Ltd | 0.30% | 237,503 | $5,481,569 | $3,802,423 | -$1,679,146 | -30.63% | |
| Qube Research & Technologies Ltd | 0.00% | 194,714 | $4,493,999 | $3,117,371 | -$1,376,628 | -30.63% | |
| State Street Corp | 0.00% | 155,849 | $3,596,995 | $2,495,142 | -$1,101,853 | -30.63% | |
| Trexquant Investment Lp | 0.02% | 119,750 | $2,763,830 | $1,917,198 | -$846,632 | -30.63% | |
| Bridgeway Capital Management, Llc | 0.05% | 111,472 | $2,572,774 | $1,784,667 | -$788,107 | -30.63% | |
| Citadel Advisors Llc | 0.00% | 106,246 | $2,452,158 | $1,700,998 | -$751,160 | -30.63% | |
| Palisades Investment Partners, Llc | 0.67% | 102,691 | $2,370,140 | $1,644,083 | -$726,057 | -30.63% | |
| Northern Trust Corp | 0.00% | 91,857 | $2,120,059 | $1,470,631 | -$649,428 | -30.63% | |
| Millennium Management Llc | 0.00% | 90,626 | $2,091,648 | $1,450,922 | -$640,726 | -30.63% | |
| Morgan Stanley | 0.00% | 82,999 | $1,915,617 | $1,328,814 | -$586,803 | -30.63% | |
| Vanguard Fiduciary Trust Co | 0.00% | 81,805 | $1,888,059 | $1,309,698 | -$578,361 | -30.63% | |
| Vanguard Portfolio Management Llc | 0.00% | 81,351 | $1,877,581 | $1,302,430 | -$575,151 | -30.63% | |
| Point72 Asset Management, L.P. | 0.00% | 79,684 | $1,839,107 | $1,275,741 | -$563,366 | -30.63% | |
| Ubs Group Ag | 0.00% | 79,085 | $1,825,282 | $1,266,151 | -$559,131 | -30.63% | |
| Informed Momentum Co Llc | 0.15% | 72,579 | $1,675,123 | $1,161,990 | -$513,133 | -30.63% | |
| Bnp Paribas Financial Markets | 0.00% | 71,293 | $1,645,442 | $1,141,401 | -$504,041 | -30.63% | |
| Xtx Topco Ltd | 0.02% | 69,832 | $1,611,723 | $1,118,010 | -$493,713 | -30.63% | |
| Los Angeles Capital Management Llc | 0.01% | 63,562 | $1,467,011 | $1,017,628 | -$449,383 | -30.63% | |
| O'Shaughnessy Asset Management, Llc | 0.01% | 54,829 | $1,265,453 | $877,812 | -$387,641 | -30.63% | |
| Goldman Sachs Group Inc | 0.00% | 54,066 | $1,247,844 | $865,597 | -$382,247 | -30.63% | |
| Capelight Capital Asset Management Lp | 0.58% | 50,000 | $1,154,000 | $800,500 | -$353,500 | -30.63% | |
| Sei Investments Co | 0.00% | 49,501 | $1,142,483 | $792,511 | -$349,972 | -30.63% | |
| Man Group Plc | 0.00% | 45,224 | $1,043,770 | $724,036 | -$319,734 | -30.63% | |
| New York State Common Retirement Fund | 0.00% | 44,009 | $1,015,728 | $704,584 | -$311,144 | -30.63% | |
| Hillsdale Investment Management Inc. | 0.02% | 43,080 | $994,286 | $689,711 | -$304,575 | -30.63% | |
| Susquehanna International Group, Llp | 0.00% | 42,842 | $988,793 | $685,900 | -$302,893 | -30.63% | |
| Bank Of New York Mellon Corp | 0.00% | 41,533 | $958,591 | $664,943 | -$293,648 | -30.63% | |
| Ritholtz Wealth Management | 0.01% | 41,374 | $954,912 | $662,398 | -$292,514 | -30.63% | |
| Occudo Quantitative Strategies Lp | 0.05% | 38,616 | $891,257 | $618,242 | -$273,015 | -30.63% | |
| Engineers Gate Manager Lp | 0.01% | 38,552 | $889,780 | $617,218 | -$272,562 | -30.63% | |
| Gsa Capital Partners Llp | 0.06% | 37,814 | $873,000 | $605,402 | -$267,598 | -30.65% | |
| Essex Investment Management Co Llc | 0.11% | 37,761 | $871,524 | $604,554 | -$266,970 | -30.63% | |
| Merit Financial Group, Llc | 0.01% | 37,000 | $853,960 | $592,370 | -$261,590 | -30.63% | |
| Empowered Funds, Llc | 0.00% | 34,672 | $800,230 | $555,099 | -$245,131 | -30.63% | |
| American Century Companies Inc | 0.00% | 34,536 | $797,091 | $552,921 | -$244,170 | -30.63% | |
| Janney Montgomery Scott Llc | 0.00% | 30,760 | $710,000 | $492,468 | -$217,532 | -30.64% |
Frequently asked questions about ASYS
Who are the largest institutional holders of ASYS?
The largest institutional holders of ASYS reported in the latest SEC Form 13F filings include Aigh Capital Management Llc, First Eagle U.S. Value, Blackrock, Inc., Awm Investment Company, Inc., and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported ASYS position.
What is ASYS institutional ownership?
This page tracks ASYS positions reported by institutional investment managers through SEC Form 13F. AMTECH SYSTEMS INC (ASYS) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ASYS?
InsiderSet currently tracks 114 institutional managers reporting ASYS holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of ASYS shareholders.
How much ASYS stock do institutions own?
Institutional investment managers disclosed approximately $261.41M in ASYS holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ASYS institutional ownership last updated?
The latest ASYS institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional ASYS holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its ASYS position after the reporting date.
Are institutions buying or selling ASYS?
Institutional buying and selling can be analyzed by comparing ASYS positions across consecutive 13F reporting periods. InsiderSet's ASYS Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ASYS ownership changes.
How has ASYS institutional ownership changed over time?
InsiderSet tracks ASYS institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.