AMTECH SYSTEMS INC - ASYS
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| First Eagle Investment Management, LLC | History | Added to | 832,453 | 9,723 | 0.02% | 0.02% | 1 | +98,107 | 13.36% | Q1 2026 | May 14, 2026 |
| VANGUARD GROUP INC | History | No change | 631,905 | 7,930 | 0.0% | 0.0% | 2 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 564,327 | 6,591 | 0.0% | — | 3 | +564,327 | New | Q1 2026 | May 15, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | Reduced | 529,351 | 6,181 | 0.0% | 0.0% | 4 | -142,756 | -21.24% | Q1 2026 | May 07, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | Added to | 466,837 | 5,446 | 0.01% | 0.0% | 5 | +230,829 | 97.81% | Q1 2026 | May 13, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Added to | 453,597 | 5,298 | 0.0% | 0.0% | 6 | +430,849 | 1894.01% | Q1 2026 | May 15, 2026 |
| MARSHALL WACE, LLP | History | Added to | 417,076 | 4,871 | 0.0% | 0.0% | 7 | +64,452 | 18.28% | Q1 2026 | May 14, 2026 |
| Pacific Ridge Capital Partners, LLC | History | Reduced | 405,371 | 4,734 | 1.03% | 1.73% | 8 | -222,440 | -35.43% | Q1 2026 | May 11, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | History | Added to | 365,387 | 4,267 | 0.0% | 0.0% | 9 | +18,354 | 5.29% | Q1 2026 | May 14, 2026 |
| JANE STREET GROUP, LLC | History | Added to | 340,879 | 3,981 | 0.0% | 0.0% | 10 | +15,125 | 4.64% | Q1 2026 | May 12, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Added to | 266,856 | 3,116 | 0.0% | 0.0% | 11 | +155,419 | 139.47% | Q1 2026 | May 15, 2026 |
| Connor, Clark & Lunn Investment Management Ltd. | History | Added to | 174,159 | 2,034 | 0.0% | 0.0% | 12 | +107,282 | 160.42% | Q1 2026 | May 11, 2026 |
| Trexquant Investment LP | History | Added to | 173,889 | 2,031 | 0.01% | 0.01% | 13 | +84,524 | 94.58% | Q1 2026 | May 15, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Reduced | 168,638 | 1,969 | 0.0% | 0.0% | 14 | -47,392 | -21.94% | Q1 2026 | May 15, 2026 |
| BlackRock, Inc. | History | Added to | 145,446 | 1,698 | 0.0% | 0.0% | 15 | +10,969 | 8.16% | Q1 2026 | May 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Reduced | 132,149 | 1,544 | 0.0% | 0.0% | 16 | -852 | -0.64% | Q1 2026 | May 15, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 129,714 | 1,515 | 0.0% | 0.0% | 17 | +4,871 | 3.9% | Q1 2026 | May 15, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | Added to | 109,118 | 1,274 | 0.03% | 0.03% | 18 | +12,800 | 13.29% | Q1 2026 | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Reduced | 108,096 | 1,262 | 0.0% | 0.0% | 19 | -38,500 | -26.26% | Q1 2026 | May 14, 2026 |
| Palisades Investment Partners, LLC | History | New | 100,656 | 1,175 | 0.46% | — | 20 | +100,656 | New | Q1 2026 | Apr 30, 2026 |
| SEI INVESTMENTS CO | History | Added to | 92,515 | 1,080 | 0.0% | 0.0% | 21 | +47,282 | 104.53% | Q1 2026 | May 13, 2026 |
| Qube Research & Technologies Ltd | History | Added to | 88,517 | 1,033 | 0.0% | 0.0% | 22 | +46,539 | 110.87% | Q1 2026 | May 15, 2026 |
| TWO SIGMA ADVISERS, LP | History | No change | 69,997 | 878 | 0.0% | 0.0% | 23 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| XTX Topco Ltd | History | Added to | 74,606 | 871 | 0.02% | 0.02% | 24 | +5,225 | 7.53% | Q1 2026 | May 15, 2026 |
| Informed Momentum Co LLC | History | No change | 74,305 | 867 | 0.1% | 0.1% | 25 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| UBS Group AG | History | Added to | 72,474 | 846 | 0.0% | 0.0% | 26 | +62,664 | 638.78% | Q1 2026 | May 05, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 63,541 | 742 | 0.0% | 0.0% | 27 | +36,973 | 139.16% | Q1 2026 | May 12, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 63,296 | 739 | 0.0% | — | 28 | +63,296 | New | Q1 2026 | May 08, 2026 |
| MORGAN STANLEY | History | Added to | 59,092 | 690 | 0.0% | 0.0% | 29 | +45,881 | 347.29% | Q1 2026 | May 15, 2026 |
| STATE STREET CORP | History | Reduced | 57,340 | 669 | 0.0% | 0.0% | 30 | -5,450 | -8.68% | Q1 2026 | May 15, 2026 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | History | Reduced | 50,727 | 592 | 0.0% | 0.0% | 31 | -10,236 | -16.79% | Q1 2026 | May 13, 2026 |
| NEW YORK STATE COMMON RETIREMENT FUND | History | New | 41,509 | 484 | 0.0% | — | 32 | +41,509 | New | Q1 2026 | May 06, 2026 |
| RITHOLTZ WEALTH MANAGEMENT | History | Added to | 40,121 | 468 | 0.01% | 0.01% | 33 | +549 | 1.39% | Q1 2026 | Apr 20, 2026 |
| NORTHERN TRUST CORP | History | Reduced | 39,004 | 455 | 0.0% | 0.0% | 34 | -173 | -0.44% | Q1 2026 | May 14, 2026 |
| Squarepoint Ops LLC | History | Added to | 38,690 | 451 | 0.0% | 0.0% | 35 | +22,013 | 132.0% | Q1 2026 | May 15, 2026 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | History | No change | 37,816 | 441 | 0.07% | 0.07% | 36 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| Engineers Gate Manager LP | History | New | 37,580 | 438 | 0.01% | — | 37 | +37,580 | New | Q1 2026 | May 15, 2026 |
| Merit Financial Group, LLC | History | No change | 37,000 | 432 | 0.0% | 0.0% | 38 | 0 | 0.0% | Q1 2026 | Apr 15, 2026 |
| GOLDMAN SACHS GROUP INC | History | Reduced | 36,575 | 427 | 0.0% | 0.0% | 39 | -42,118 | -53.52% | Q1 2026 | May 15, 2026 |
| Empowered Funds, LLC | History | New | 32,318 | 377 | 0.0% | — | 40 | +32,318 | New | Q1 2026 | May 14, 2026 |
| Man Group plc | History | New | 31,671 | 369 | 0.0% | — | 41 | +31,671 | New | Q1 2026 | May 15, 2026 |
| Janney Montgomery Scott LLC | History | No change | 30,760 | 359 | 0.0% | 0.0% | 42 | 0 | 0.0% | Q1 2026 | Apr 22, 2026 |
| Point72 Asset Management, L.P. | History | Reduced | 29,758 | 347 | 0.0% | 0.0% | 43 | -38,396 | -56.34% | Q1 2026 | May 15, 2026 |
| OCCUDO QUANTITATIVE STRATEGIES LP | History | Reduced | 19,830 | 345 | 0.02% | 0.02% | 44 | -1,463 | -6.87% | Q1 2026 | May 15, 2026 |
| Dynamic Technology Lab Private Ltd | History | New | 28,141 | 328 | 0.05% | — | 45 | +28,141 | New | Q1 2026 | May 15, 2026 |
| IRONWOOD INVESTMENT MANAGEMENT LLC | History | Reduced | 27,198 | 317 | 0.13% | 0.15% | 46 | -339 | -1.23% | Q1 2026 | May 15, 2026 |
| AMERICAN CENTURY COMPANIES INC | History | Added to | 26,736 | 312 | 0.0% | 0.0% | 47 | +6,070 | 29.37% | Q1 2026 | May 15, 2026 |
| GSA CAPITAL PARTNERS LLP | History | Reduced | 25,630 | 299 | 0.02% | 0.03% | 48 | -5,118 | -16.64% | Q1 2026 | May 08, 2026 |
| Hillsdale Investment Management Inc. | History | New | 25,300 | 295 | 0.01% | — | 49 | +25,300 | New | Q1 2026 | May 04, 2026 |
| Hudson Bay Capital Management LP | History | Added to | 24,083 | 281 | 0.0% | 0.0% | 50 | +2,530 | 11.74% | Q1 2026 | May 13, 2026 |
| Brevan Howard Capital Management LP | History | New | 23,714 | 276 | 0.0% | — | 51 | +23,714 | New | Q1 2026 | May 15, 2026 |
| State of Wyoming | History | New | 23,688 | 276 | 0.03% | — | 52 | +23,688 | New | Q1 2026 | May 13, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Added to | 22,652 | 264 | 0.0% | — | 53 | +22,574 | 28941.03% | Q1 2026 | May 15, 2026 |
| Virtu Financial LLC | History | New | 21,210 | 248 | 0.01% | — | 54 | +21,210 | New | Q1 2026 | May 14, 2026 |
| Sowell Financial Services LLC | History | Added to | 20,206 | 236 | 0.01% | 0.01% | 55 | +4,050 | 25.07% | Q1 2026 | Apr 20, 2026 |
| HRT FINANCIAL LP | History | New | 20,181 | 235 | 0.0% | — | 56 | +20,181 | New | Q1 2026 | May 14, 2026 |
| VILLERE ST DENIS J & CO LLC | History | No change | 20,000 | 233 | 0.03% | 0.03% | 57 | 0 | 0.0% | Q1 2026 | Apr 30, 2026 |
| LPL Financial LLC | History | Added to | 19,013 | 222 | 0.0% | 0.0% | 58 | +7,020 | 58.53% | Q1 2026 | May 06, 2026 |
| Schonfeld Strategic Advisors LLC | History | New | 18,804 | 219 | 0.0% | — | 59 | +18,804 | New | Q1 2026 | May 15, 2026 |
| WealthTrust Axiom LLC | History | Added to | 16,300 | 190 | 0.05% | 0.04% | 60 | +5,000 | 44.25% | Q1 2026 | May 11, 2026 |
| JAMES INVESTMENT RESEARCH, INC. | History | No change | 14,600 | 170 | 0.02% | 0.02% | 61 | 0 | 0.0% | Q1 2026 | Apr 24, 2026 |
| Jump Financial, LLC | History | Reduced | 13,280 | 155 | 0.0% | 0.0% | 62 | -17,020 | -56.17% | Q1 2026 | May 14, 2026 |
| Kovack Advisors, Inc. | History | Reduced | 12,100 | 144 | 0.01% | 0.01% | 63 | -9,900 | -45.0% | Q1 2026 | May 12, 2026 |
| Walleye Capital LLC | History | New | 12,197 | 142 | 0.0% | — | 64 | +12,197 | New | Q1 2026 | May 13, 2026 |
| BARCLAYS PLC | History | Reduced | 11,324 | 132 | 0.0% | 0.0% | 65 | -1,374 | -10.82% | Q1 2026 | May 14, 2026 |
| VIRTUS ADVISERS, LLC | History | New | 11,200 | 130 | 0.06% | — | 66 | +11,200 | New | Q1 2026 | May 14, 2026 |
| OMERS ADMINISTRATION Corp | History | Reduced | 10,400 | 121 | 0.0% | 0.0% | 67 | -6,200 | -37.35% | Q1 2026 | May 15, 2026 |
| Truvestments Capital LLC | History | New | 8,990 | 105 | 0.02% | — | 68 | +8,990 | New | Q1 2026 | May 13, 2026 |
| NewEdge Advisors, LLC | History | Added to | 24,516 | 52 | 0.0% | 0.0% | 69 | +9,916 | 67.92% | Q1 2026 | May 15, 2026 |
| Vanguard Global Advisers, LLC | History | New | 4,282 | 50 | 0.0% | — | 70 | +4,282 | New | Q1 2026 | May 08, 2026 |
| GROUP ONE TRADING LLC | History | Reduced | 3,311 | 38 | 0.0% | 0.0% | 71 | -4,238 | -56.14% | Q1 2026 | May 13, 2026 |
| Tower Research Capital LLC (TRC) | History | New | 1,941 | 22 | 0.0% | — | 72 | +1,941 | New | Q1 2026 | May 15, 2026 |
| IFP Advisors, Inc | History | New | 1,019 | 11 | 0.0% | — | 73 | +1,019 | New | Q1 2026 | Apr 13, 2026 |
| Strengthening Families & Communities, LLC | History | No change | 490 | 5 | 0.0% | 0.0% | 74 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| OSAIC HOLDINGS, INC. | History | Reduced | 338 | 3 | 0.0% | 0.0% | 75 | -307 | -47.6% | Q1 2026 | May 15, 2026 |
| CWM, LLC | History | New | 301 | 3 | 0.0% | — | 76 | +301 | New | Q1 2026 | May 14, 2026 |
| JPMORGAN CHASE & CO | History | New | 258 | 2 | 0.0% | — | 79 | +258 | New | Q1 2026 | May 13, 2026 |
| Russell Investments Group, Ltd. | History | New | 240 | 2 | 0.0% | — | 80 | +240 | New | Q1 2026 | May 08, 2026 |
| FMR LLC | History | Reduced | 242 | 2 | 0.0% | 0.0% | 77 | -186 | -43.46% | Q1 2026 | May 15, 2026 |
| ROYAL BANK OF CANADA | History | Added to | 191 | 2 | 0.0% | 0.0% | 78 | +145 | 315.22% | Q1 2026 | May 15, 2026 |
| Quadrature Capital Ltd | History | Closed out | 0 | 0 | — | 0.0% | — | -30,542 | -100.0% | Q1 2026 | May 15, 2026 |
| Centiva Capital, LP | History | Closed out | 0 | 0 | — | 0.0% | — | -21,815 | -100.0% | Q1 2026 | May 14, 2026 |
| Ancora Advisors LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -16,247 | -100.0% | Q1 2026 | May 15, 2026 |
| Graham Capital Management, L.P. | History | Closed out | 0 | 0 | — | 0.0% | — | -12,608 | -100.0% | Q1 2026 | May 15, 2026 |
| Kestra Advisory Services, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -7,050 | -100.0% | Q1 2026 | Apr 30, 2026 |
| CITIGROUP INC | History | Closed out | 0 | 0 | — | 0.0% | — | -2,388 | -100.0% | Q1 2026 | May 11, 2026 |
| SIMPLEX TRADING, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -681 | -100.0% | Q1 2026 | May 14, 2026 |
| SBI Securities Co., Ltd. | History | Reduced | 30 | 0 | — | 0.0% | — | -100 | -76.92% | Q1 2026 | Apr 27, 2026 |