AMTECH SYSTEMS INC - ASYS

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 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 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