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ASYS · Amtech Systems Inc

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$14.45 -0.23 (-1.57%)
Market Cap
$212.85M
Shares
14.50M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 88
Total Value: $92,155,493
Total Shares: 7,674,805

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 79 13F filers
Top Holder
11.1%
Jun 2023 → Mar 2026 · range 11.1% – 28.0%
of institutional value
Top 5
37.8%
Jun 2023 → Mar 2026 · range 37.8% – 82.3%
of institutional value
Top 10
61.7%
Jun 2023 → Mar 2026 · range 61.7% – 91.0%
of institutional value
HHI
464
Jun 2023 → Mar 2026 · range 464 – 1,522
Broadly held
Showing 91 of 91
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Large First Eagle Investment Management, LLC $9,723,050 10.55% 832,453
Mega VANGUARD CAPITAL MANAGEMENT LLC $6,591,339 7.15% 564,327
Mega DIMENSIONAL FUND ADVISORS LP $6,182,819 6.71% 529,351
Large ACADIAN ASSET MANAGEMENT LLC $5,452,656 5.92% 466,837
Mega MILLENNIUM MANAGEMENT LLC $5,298,012 5.75% 453,597
Large MARSHALL WACE, LLP $4,871,446 5.29% 417,076
Small Pacific Ridge Capital Partners, LLC $4,734,733 5.14% 405,371
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $4,267,720 4.63% 365,387
Mega JANE STREET GROUP, LLC $3,981,466 4.32% 340,879
Mega TWO SIGMA INVESTMENTS, LP $3,116,878 3.38% 266,856
Large Connor, Clark & Lunn Investment Management Ltd. $2,034,177 2.21% 174,159
Large Trexquant Investment LP $2,031,023 2.20% 173,889
Mega BlackRock, Inc. $1,698,807 1.84% 145,446
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,564,395 1.70% 133,938
Mega GEODE CAPITAL MANAGEMENT, LLC $1,543,500 1.67% 132,149
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $1,274,498 1.38% 109,118
Large RENAISSANCE TECHNOLOGIES LLC $1,262,561 1.37% 108,096
Mega CITADEL ADVISORS LLC $1,248,754 1.36% 106,914
Small Palisades Investment Partners, LLC $1,175,662 1.28% 100,656
Small Capelight Capital Asset Management LP $1,154,000 1.25% 50,000
Large SEI INVESTMENTS CO $1,080,575 1.17% 92,515
Large Qube Research & Technologies Ltd $1,033,878 1.12% 88,517
Mid XTX Topco Ltd $871,398 0.95% 74,606
Small Informed Momentum Co LLC $867,882 0.94% 74,305
Mid Merit Financial Group, LLC $853,960 0.93% 37,000
Mega UBS Group AG $846,495 0.92% 72,474
Mega BNP PARIBAS ARBITRAGE, SA $742,158 0.81% 63,541
Mega VANGUARD FIDUCIARY TRUST CO Bank $739,297 0.80% 63,296
Micro Optimus Capital Advisors, LLC $692,400 0.75% 30,000
Mega MORGAN STANLEY $690,193 0.75% 59,092
Mid Y-Intercept (Hong Kong) Ltd $681,621 0.74% 29,533
Mega STATE STREET CORP $669,731 0.73% 57,340
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC $592,491 0.64% 50,727
Small SHIKIAR ASSET MANAGEMENT INC $509,491 0.55% 22,075
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $484,825 0.53% 41,509
Mid RITHOLTZ WEALTH MANAGEMENT $468,613 0.51% 40,121
Mid Sowell Financial Services LLC $466,354 0.51% 20,206
Mega NORTHERN TRUST CORP Bank $455,565 0.49% 39,004
Large Squarepoint Ops LLC $451,899 0.49% 38,690
Small ESSEX INVESTMENT MANAGEMENT CO LLC $441,690 0.48% 37,816
Mid Engineers Gate Manager LP $438,934 0.48% 37,580
Mega GOLDMAN SACHS GROUP INC $427,196 0.46% 36,575
Large Empowered Funds, LLC $377,474 0.41% 32,318
Large Man Group plc $369,917 0.40% 31,671
Large Janney Montgomery Scott LLC $359,276 0.39% 30,760
Large Point72 Asset Management, L.P. $347,573 0.38% 29,758
Small JAMES INVESTMENT RESEARCH, INC. $336,968 0.37% 14,600
Small Dynamic Technology Lab Private Ltd $328,686 0.36% 28,141
Small IRONWOOD INVESTMENT MANAGEMENT LLC $317,672 0.34% 27,198
Mega AMERICAN CENTURY COMPANIES INC $312,276 0.34% 26,736
Mid GSA CAPITAL PARTNERS LLP $299,358 0.32% 25,630
Mid Hillsdale Investment Management Inc. $295,504 0.32% 25,300
Large NewEdge Advisors, LLC $286,346 0.31% 24,516
Large Hudson Bay Capital Management LP $281,289 0.31% 24,083
Mid Brevan Howard Capital Management LP $276,979 0.30% 23,714
Small State of Wyoming $276,675 0.30% 23,688
Mega CITADEL ADVISORS LLC $266,304 0.29% 22,800
Mega BANK OF AMERICA CORP /DE/ Bank $264,575 0.29% 22,652
Small BUFFALO BUSINESS & ESTATE SERVICES LTD $257,872 0.28% 11,173
Mid Virtu Financial LLC $247,732 0.27% 21,210
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $241,776 0.26% 20,700
Large HRT FINANCIAL LP $235,714 0.26% 20,181
Small VILLERE ST DENIS J & CO LLC $233,600 0.25% 20,000
Mid OCCUDO QUANTITATIVE STRATEGIES LP $231,614 0.25% 19,830
Mega LPL Financial LLC $222,071 0.24% 19,013
Large Schonfeld Strategic Advisors LLC $219,630 0.24% 18,804
Small WealthTrust Axiom LLC $190,384 0.21% 16,300
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $163,520 0.18% 14,000
Mid Jump Financial, LLC $155,110 0.17% 13,280
Large Walleye Capital LLC $142,460 0.15% 12,197
Mid Kovack Advisors, Inc. $141,328 0.15% 12,100
Mega BARCLAYS PLC $132,264 0.14% 11,324
Small VIRTUS ADVISERS, LLC $130,816 0.14% 11,200
Large OMERS ADMINISTRATION Corp $121,472 0.13% 10,400
Small Truvestments Capital LLC $105,003 0.11% 8,990
Large Police & Firemen's Retirement System of New Jersey Pension $79,741 0.09% 3,455
Mega Vanguard Global Advisers, LLC $50,013 0.05% 4,282
Mid Farther Finance Advisors, LLC $39,236 0.04% 1,700
Mid GROUP ONE TRADING LLC $38,672 0.04% 3,311
Mid Tower Research Capital LLC (TRC) $22,670 0.02% 1,941
Mid SBI Securities Co., Ltd. Broker-Dealer $11,124 0.01% 482
Small Strengthening Families & Communities, LLC $5,723 0.01% 490
Small FIRST UNITED BANK & TRUST Bank $5,077 0.01% 220
Large OSAIC HOLDINGS, INC. $3,947 0.00% 338
Large CWM, LLC $3,515 0.00% 301
Mega JPMORGAN CHASE & CO $3,013 0.00% 258
Mega FMR LLC $2,826 0.00% 242
Large Russell Investments Group, Ltd. $2,803 0.00% 240
Mega ROYAL BANK OF CANADA Bank $2,230 0.00% 191
Mid Sterling Capital Management LLC $946 0.00% 41
Small Horrell Capital Management, Inc. $577 0.00% 25
Key facts CIK 720500 CUSIP 032332504 13F (30d) 15 filings 15 filers Visit website Investor relations

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