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 | Reduced | 734,346 | 9,216 | 0.02% | 0.01% | 1 | -18,000 | -2.39% | Q4 2025 | Feb 04, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | Reduced | 672,107 | 8,435 | 0.0% | 0.0% | 2 | -177,708 | -20.91% | Q4 2025 | Feb 12, 2026 |
| VANGUARD GROUP INC | History | Reduced | 631,905 | 7,930 | 0.0% | 0.0% | 3 | -44,101 | -6.52% | Q4 2025 | Jan 29, 2026 |
| Pacific Ridge Capital Partners, LLC | History | Reduced | 627,811 | 7,879 | 1.73% | 1.32% | 4 | -18,678 | -2.89% | Q4 2025 | Feb 04, 2026 |
| MARSHALL WACE, LLP | History | Added to | 352,624 | 4,425 | 0.0% | 0.0% | 5 | +247,352 | 234.96% | Q4 2025 | Feb 13, 2026 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | History | Added to | 347,033 | 4,355 | 0.0% | 0.0% | 6 | +164,604 | 90.23% | Q4 2025 | Feb 13, 2026 |
| JANE STREET GROUP, LLC | History | Added to | 325,754 | 4,088 | 0.0% | 0.0% | 7 | +150,332 | 85.7% | Q4 2025 | Feb 12, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | Added to | 236,008 | 2,958 | 0.0% | 0.0% | 8 | +152,476 | 182.54% | Q4 2025 | Feb 10, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Added to | 216,030 | 2,711 | 0.0% | 0.0% | 9 | +157,893 | 271.59% | Q4 2025 | Feb 17, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Added to | 146,596 | 1,839 | 0.0% | 0.0% | 10 | +126,296 | 622.15% | Q4 2025 | Feb 12, 2026 |
| BlackRock, Inc. | History | Added to | 134,477 | 1,687 | 0.0% | 0.0% | 11 | +1,604 | 1.21% | Q4 2025 | Feb 12, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 133,001 | 1,669 | 0.0% | 0.0% | 12 | +1,720 | 1.31% | Q4 2025 | Feb 09, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 124,843 | 1,566 | 0.0% | 0.0% | 13 | +46,389 | 59.13% | Q4 2025 | Feb 17, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | New | 111,437 | 1,398 | 0.0% | — | 14 | +111,437 | New | Q4 2025 | Feb 17, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | Added to | 96,318 | 1,208 | 0.03% | 0.01% | 15 | +31,518 | 48.64% | Q4 2025 | Feb 17, 2026 |
| Trexquant Investment LP | History | New | 89,365 | 1,121 | 0.01% | — | 16 | +89,365 | New | Q4 2025 | Feb 17, 2026 |
| GOLDMAN SACHS GROUP INC | History | Added to | 78,693 | 987 | 0.0% | 0.0% | 17 | +47,442 | 151.81% | Q4 2025 | Mar 25, 2026 |
| Informed Momentum Co LLC | History | New | 74,305 | 932 | 0.1% | — | 18 | +74,305 | New | Q4 2025 | Feb 12, 2026 |
| TWO SIGMA ADVISERS, LP | History | New | 69,997 | 878 | 0.0% | — | 19 | +69,997 | New | Q4 2025 | Feb 17, 2026 |
| XTX Topco Ltd | History | Added to | 69,381 | 870 | 0.02% | 0.0% | 20 | +58,996 | 568.09% | Q4 2025 | Feb 17, 2026 |
| Point72 Asset Management, L.P. | History | New | 68,154 | 855 | 0.0% | — | 21 | +68,154 | New | Q4 2025 | Feb 17, 2026 |
| Connor, Clark & Lunn Investment Management Ltd. | History | New | 66,877 | 839 | 0.0% | — | 22 | +66,877 | New | Q4 2025 | Feb 10, 2026 |
| STATE STREET CORP | History | Added to | 62,790 | 788 | 0.0% | 0.0% | 23 | +8,000 | 14.6% | Q4 2025 | Feb 13, 2026 |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | History | New | 60,963 | 765 | 0.0% | — | 24 | +60,963 | New | Q4 2025 | Feb 11, 2026 |
| SEI INVESTMENTS CO | History | New | 45,233 | 567 | 0.0% | — | 25 | +45,233 | New | Q4 2025 | Feb 13, 2026 |
| Qube Research & Technologies Ltd | History | New | 41,978 | 526 | 0.0% | — | 26 | +41,978 | New | Q4 2025 | Feb 17, 2026 |
| RITHOLTZ WEALTH MANAGEMENT | History | New | 39,572 | 496 | 0.01% | — | 27 | +39,572 | New | Q4 2025 | Jan 23, 2026 |
| NORTHERN TRUST CORP | History | Added to | 39,177 | 491 | 0.0% | 0.0% | 28 | +2,474 | 6.74% | Q4 2025 | Feb 17, 2026 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | History | No change | 37,816 | 474 | 0.07% | 0.05% | 29 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Merit Financial Group, LLC | History | New | 37,000 | 464 | 0.0% | — | 30 | +37,000 | New | Q4 2025 | Jan 26, 2026 |
| Janney Montgomery Scott LLC | History | Added to | 30,760 | 386 | 0.0% | 0.0% | 31 | +4,060 | 15.21% | Q4 2025 | Feb 11, 2026 |
| GSA CAPITAL PARTNERS LLP | History | Reduced | 30,748 | 386 | 0.03% | 0.03% | 32 | -3,069 | -9.08% | Q4 2025 | Feb 06, 2026 |
| Quadrature Capital Ltd | History | New | 30,542 | 383 | 0.0% | — | 33 | +30,542 | New | Q4 2025 | Feb 17, 2026 |
| Jump Financial, LLC | History | New | 30,300 | 380 | 0.0% | — | 34 | +30,300 | New | Q4 2025 | Feb 17, 2026 |
| IRONWOOD INVESTMENT MANAGEMENT LLC | History | Reduced | 27,537 | 345 | 0.15% | 0.11% | 35 | -54 | -0.2% | Q4 2025 | Feb 12, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | New | 26,568 | 333 | 0.0% | — | 36 | +26,568 | New | Q4 2025 | Feb 10, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Added to | 22,748 | 285 | 0.0% | 0.0% | 37 | +10,802 | 90.42% | Q4 2025 | Feb 17, 2026 |
| Kovack Advisors, Inc. | History | Reduced | 22,000 | 276 | 0.01% | 0.03% | 38 | -10,150 | -31.57% | Q4 2025 | Feb 17, 2026 |
| Centiva Capital, LP | History | New | 21,815 | 273 | 0.0% | — | 39 | +21,815 | New | Q4 2025 | Feb 13, 2026 |
| Hudson Bay Capital Management LP | History | New | 21,553 | 270 | 0.0% | — | 40 | +21,553 | New | Q4 2025 | Feb 13, 2026 |
| OCCUDO QUANTITATIVE STRATEGIES LP | History | New | 21,293 | 267 | 0.02% | — | 41 | +21,293 | New | Q4 2025 | Feb 17, 2026 |
| AMERICAN CENTURY COMPANIES INC | History | Added to | 20,666 | 259 | 0.0% | 0.0% | 42 | +10,043 | 94.54% | Q4 2025 | Feb 13, 2026 |
| VILLERE ST DENIS J & CO LLC | History | No change | 20,000 | 251 | 0.03% | 0.02% | 43 | 0 | 0.0% | Q4 2025 | Jan 28, 2026 |
| Squarepoint Ops LLC | History | New | 16,677 | 209 | 0.0% | — | 44 | +16,677 | New | Q4 2025 | Feb 13, 2026 |
| OMERS ADMINISTRATION Corp | History | New | 16,600 | 208 | 0.0% | — | 45 | +16,600 | New | Q4 2025 | Feb 13, 2026 |
| Ancora Advisors LLC | History | Reduced | 16,247 | 203 | 0.0% | 0.01% | 46 | -19,000 | -53.91% | Q4 2025 | Feb 17, 2026 |
| Sowell Financial Services LLC | History | New | 16,156 | 202 | 0.01% | — | 47 | +16,156 | New | Q4 2025 | Jan 21, 2026 |
| JAMES INVESTMENT RESEARCH, INC. | History | No change | 14,600 | 183 | 0.02% | 0.01% | 48 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| NewEdge Advisors, LLC | History | No change | 14,600 | 183 | 0.0% | 0.0% | 49 | 0 | 0.0% | Q4 2025 | Feb 18, 2026 |
| MORGAN STANLEY | History | Added to | 13,211 | 165 | 0.0% | 0.0% | 50 | +5,473 | 70.73% | Q4 2025 | Feb 13, 2026 |
| BARCLAYS PLC | History | Added to | 12,698 | 159 | 0.0% | — | 51 | +12,668 | 42226.67% | Q4 2025 | Feb 13, 2026 |
| Graham Capital Management, L.P. | History | New | 12,608 | 158 | 0.0% | — | 52 | +12,608 | New | Q4 2025 | Feb 17, 2026 |
| LPL Financial LLC | History | Reduced | 11,993 | 150 | 0.0% | 0.0% | 53 | -822 | -6.41% | Q4 2025 | Feb 11, 2026 |
| WealthTrust Axiom LLC | History | Reduced | 11,300 | 141 | 0.04% | 0.09% | 54 | -24,500 | -68.44% | Q4 2025 | Feb 13, 2026 |
| UBS Group AG | History | Added to | 9,810 | 123 | 0.0% | 0.0% | 55 | +7,780 | 383.25% | Q4 2025 | Jan 29, 2026 |
| GROUP ONE TRADING LLC | History | Added to | 7,549 | 94 | 0.0% | 0.0% | 56 | +5,525 | 272.97% | Q4 2025 | Feb 12, 2026 |
| Kestra Advisory Services, LLC | History | New | 7,050 | 88 | 0.0% | — | 57 | +7,050 | New | Q4 2025 | Feb 13, 2026 |
| CITIGROUP INC | History | Added to | 2,388 | 29 | 0.0% | — | 58 | +2,387 | 238700.0% | Q4 2025 | Feb 13, 2026 |
| SIMPLEX TRADING, LLC | History | New | 681 | 8 | 0.0% | — | 59 | +681 | New | Q4 2025 | Feb 11, 2026 |
| OSAIC HOLDINGS, INC. | History | Reduced | 645 | 8 | 0.0% | 0.0% | 60 | -135 | -17.31% | Q4 2025 | Feb 17, 2026 |
| Strengthening Families & Communities, LLC | History | No change | 490 | 6 | 0.0% | 0.0% | 61 | 0 | 0.0% | Q4 2025 | Feb 03, 2026 |
| FMR LLC | History | Reduced | 428 | 5 | 0.0% | 0.0% | 62 | -237 | -35.64% | Q4 2025 | Feb 17, 2026 |
| ROYAL BANK OF CANADA | History | New | 46 | 1 | 0.0% | — | 63 | +46 | New | Q4 2025 | Feb 17, 2026 |
| SBI Securities Co., Ltd. | History | Reduced | 130 | 1 | 0.0% | 0.0% | 64 | -21 | -13.91% | Q4 2025 | Feb 03, 2026 |
| EHP Funds Inc. | History | Closed out | 0 | 0 | — | 0.21% | — | -25,242 | -100.0% | Q3 2025 | Nov 13, 2025 |
| GWN SECURITIES INC. | History | Closed out | 0 | 0 | — | 0.04% | — | -20,423 | -100.0% | Q3 2025 | Oct 27, 2025 |
| WEXFORD CAPITAL LP | History | Closed out | 0 | 0 | — | 0.03% | — | -18,808 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Brevan Howard Capital Management LP | History | Closed out | 0 | 0 | — | 0.0% | — | -18,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| HRT FINANCIAL LP | History | Closed out | 0 | 0 | — | 0.0% | — | -16,463 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Engineers Gate Manager LP | History | Closed out | 0 | 0 | — | 0.0% | — | -13,442 | -100.0% | Q3 2025 | Nov 14, 2025 |
| THOMPSON DAVIS & CO., INC. | History | Closed out | 0 | 0 | — | 0.08% | — | -13,250 | -100.0% | Q3 2025 | Nov 05, 2025 |
| Williams & Novak, LLC | History | Closed out | 0 | 0 | — | 0.07% | — | -10,250 | -100.0% | Q3 2025 | Oct 30, 2025 |
| WELLS FARGO & COMPANY/MN | History | Closed out | 0 | 0 | — | 0.0% | — | -2,563 | -100.0% | Q3 2025 | Nov 13, 2025 |
| BANK OF AMERICA CORP /DE/ | History | Reduced | 78 | 0 | — | 0.0% | — | -1,608 | -95.37% | Q4 2025 | Feb 17, 2026 |
| SIGNATUREFD, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -400 | -100.0% | Q3 2025 | Oct 21, 2025 |
| PRINCIPAL SECURITIES, INC. | History | Closed out | 0 | 0 | — | 0.0% | — | -200 | -100.0% | Q3 2025 | Nov 12, 2025 |