AMTECH SYSTEMS INC - ASYS

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
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