Latest Period
Q1 2026
Security Snapshot
AMTECH SYSTEMS INC - Common Stock, $0.01 Par Value Per Share (ASYS) Institutional Ownership
CUSIP: 032332504
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
79
Shares (Excl. Options)
7,472,009
Price
$11.68
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- Security type / class
- Equity / Common Stock, $0.01 Par Value Per Share
- Symbol
- ASYS on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 7,472,009
- Total 13F value
- $87,381,293
- Portfolio coverage rank
- 0%
- Share change
- +1,286,201
- Value change
- +$14,867,747
- Number of holders
- 79
- Shares outstanding
- 14,496,801
- SEC-reported price per share
- $21.49
- Insider filing price
- $21.49
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ASYS - AMTECH SYSTEMS INC - Common Stock, $0.01 Par Value Per Share is tracked under CUSIP 032332504.
- 79 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 64 to 79 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $77,162,722 to $87,381,293.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 79 institutions filings for Q1 2026.
Security key
032332504
Latest holder period
Q1 2026
13F holders
79
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
ASYS full holder history
AMTECH SYSTEMS INC SEC filings
AMTECH SYSTEMS INC company facts
AMTECH SYSTEMS INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 032332504:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
ASYS
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| PITON CAPITAL PARTNERS LLC | 21% | +2% | $64,176,468 | +$1,971,772 | 2,986,341 | +3.2% | Robert Averick | 01 Jun 2026 |
| Wax Asset Management, LLC | 9.2% | -41% | $17,091,060 | -$12,194,665 | 1,319,773 | -42% | Wax Asset Management, LLC | 31 Dec 2025 |
| DIMENSIONAL FUND ADVISORS LP | 4.7% | $8,434,943 | 672,107 | Dimensional Fund Advisors LP | 31 Dec 2025 | |||
| Pacific Ridge Capital Partners, LLC | 4.6% | $2,315,995 | 652,393 | Pacific Ridge Capital Partners, LLC | 31 Dec 2024 | |||
| ROYCE & ASSOCIATES LP | 4.1% | -62% | $2,087,350 | -$3,164,165 | 587,986 | -60% | ROYCE & ASSOCIATES LP | 31 Mar 2025 |
As of 31 Mar 2026, 79 institutional investors reported holding 7,472,009 shares of AMTECH SYSTEMS INC - Common Stock, $0.01 Par Value Per Share (ASYS). This represents 52% of the company’s total 14,496,801 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
43%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| First Eagle Investment Management, LLC | 5.7% | 832,453 | +13% | 0.02% | $9,723,051 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.9% | 564,327 | 0% | 0% | $6,591,339 |
| DIMENSIONAL FUND ADVISORS LP | 3.7% | 529,351 | -21% | 0% | $6,181,601 |
| ACADIAN ASSET MANAGEMENT LLC | 3.2% | 466,837 | +98% | 0.01% | $5,446,000 |
| MILLENNIUM MANAGEMENT LLC | 3.1% | 453,597 | +1894% | 0% | $5,298,013 |
| MARSHALL WACE, LLP | 2.9% | 417,076 | +18% | 0.01% | $4,871,447 |
| Pacific Ridge Capital Partners, LLC | 2.8% | 405,371 | -35% | 1% | $4,734,733 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.5% | 365,387 | +5.3% | 0% | $4,267,720 |
| JANE STREET GROUP, LLC | 2.4% | 340,879 | +4.6% | 0% | $3,981,467 |
| TWO SIGMA INVESTMENTS, LP | 1.8% | 266,856 | +139% | 0% | $3,116,878 |
| Connor, Clark & Lunn Investment Management Ltd. | 1.2% | 174,159 | +160% | 0% | $2,034,177 |
| Trexquant Investment LP | 1.2% | 173,889 | +95% | 0.01% | $2,031,024 |
| BlackRock, Inc. | 1% | 145,446 | +8.2% | 0% | $1,698,810 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.92% | 133,938 | +66% | 0% | $1,564,396 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.91% | 132,149 | -0.64% | 0% | $1,544,167 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.75% | 109,118 | +13% | 0.03% | $1,274,498 |
| RENAISSANCE TECHNOLOGIES LLC | 0.75% | 108,096 | -26% | 0% | $1,262,561 |
| CITADEL ADVISORS LLC | 0.74% | 106,914 | -14% | 0% | $1,248,756 |
| Palisades Investment Partners, LLC | 0.69% | 100,656 | 0.46% | $1,175,484 | |
| SEI INVESTMENTS CO | 0.64% | 92,515 | +105% | 0% | $1,080,575 |
| Qube Research & Technologies Ltd | 0.61% | 88,517 | +111% | 0% | $1,033,879 |
| XTX Topco Ltd | 0.51% | 74,606 | +7.5% | 0.02% | $871,398 |
| Informed Momentum Co LLC | 0.51% | 74,305 | 0% | 0.1% | $867,882 |
| UBS Group AG | 0.5% | 72,474 | +639% | 0% | $846,496 |
| BNP PARIBAS FINANCIAL MARKETS | 0.44% | 63,541 | 0% | 0% | $742,159 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 7,472,009 | $87,381,293 | +$14,867,747 | $11.68 | 79 |
| 2025 Q4 | 6,148,660 | $77,162,722 | +$20,556,204 | $12.55 | 64 |
| 2025 Q3 | 4,545,270 | $42,085,951 | +$4,703,455 | $9.26 | 53 |
| 2025 Q2 | 4,095,519 | $18,183,948 | -$3,413,239 | $4.44 | 36 |
| 2025 Q1 | 4,798,776 | $23,178,100 | -$3,673,934 | $4.83 | 37 |
| 2024 Q4 | 5,548,015 | $30,236,234 | -$3,106,815 | $5.45 | 35 |
| 2024 Q3 | 6,101,303 | $35,387,780 | -$628,528 | $5.80 | 34 |
| 2024 Q2 | 6,208,462 | $36,381,328 | -$199,431 | $5.86 | 34 |
| 2024 Q1 | 6,260,089 | $33,865,702 | +$888,406 | $5.41 | 41 |
| 2023 Q4 | 6,157,364 | $25,859,431 | -$3,960,935 | $4.20 | 44 |
| 2023 Q3 | 6,723,448 | $51,232,884 | +$622,755 | $7.62 | 42 |
| 2023 Q2 | 6,612,384 | $63,212,484 | +$622,539 | $9.56 | 44 |
| 2023 Q1 | 6,547,348 | $62,460,055 | +$233,563 | $9.54 | 44 |
| 2022 Q4 | 6,611,315 | $50,244,545 | -$944,653 | $7.60 | 48 |
| 2022 Q3 | 8,958,191 | $76,143,000 | -$211,257 | $8.50 | 42 |
| 2022 Q2 | 8,993,057 | $65,650,000 | -$3,678,328 | $7.30 | 39 |
| 2022 Q1 | 9,397,325 | $94,582,322 | -$2,448,436 | $10.06 | 46 |
| 2021 Q4 | 9,650,178 | $95,342,000 | -$4,323,679 | $9.88 | 48 |
| 2021 Q3 | 6,787,151 | $77,570,000 | +$2,038,439 | $11.43 | 51 |
| 2021 Q2 | 6,673,059 | $64,368,000 | -$6,221,590 | $9.64 | 54 |
| 2021 Q1 | 7,080,059 | $83,680,000 | +$4,337,725 | $11.82 | 63 |
| 2020 Q4 | 7,334,717 | $46,792,000 | +$2,898,358 | $6.38 | 39 |
| 2020 Q3 | 6,899,313 | $33,739,000 | +$1,157,725 | $4.89 | 45 |
| 2020 Q2 | 6,663,046 | $32,401,000 | +$1,265,437 | $4.87 | 43 |
| 2020 Q1 | 6,397,049 | $27,826,000 | +$2,483,028 | $4.35 | 43 |