TEMPE, AZ
AMTECH SYSTEMS INCASYS— Latest position per institution from SEC 13F filings
15
Institutional holders
10.54M
Total shares held
197.23M
Estimated value
527.08K
Avg. position size
AIGH CAPITAL MANAGEMENT LLC
CIK 1835943
Shares
1.25M
Value
28.90M
Filed
Jun 30, 2026
WASATCH ADVISORS LP
CIK 814133
Shares
1.18M
Value
19.88M
Filed
Sep 30, 2026
FIRST EAGLE INVESTMENT MANAGEMENT, LLC
CIK 1325447
Shares
848.43K
Value
19.58M
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
763.49K
Value
17.62M
Filed
Jun 30, 2026
AWM INVESTMENT COMPANY, INC.
CIK 1535264
Shares
690K
Value
15.93M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
631.90K
Value
7.93M
Filed
Dec 31, 2025
ROYCE & ASSOCIATES LP
CIK 906304
Shares
587.99K
Value
2.84M
Filed
Mar 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
580.50K
Value
13.40M
Filed
Jun 30, 2026
ACADIAN ASSET MANAGEMENT LLC
CIK 916542
Shares
580.28K
Value
13.39K
Filed
Jun 30, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
426.69K
Value
9.84M
Filed
Jun 30, 2026
PACIFIC RIDGE CAPITAL PARTNERS, LLC
CIK 1591546
Shares
405.37K
Value
4.73M
Filed
Mar 31, 2026
MARSHALL WACE, LLP
CIK 1318757
Shares
398.56K
Value
9.20M
Filed
Jun 30, 2026
JANE STREET GROUP, LLC
CIK 1595888
Shares
354.87K
Value
8.19M
Filed
Jun 30, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 1164508
Shares
308.90K
Value
7.13M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
284.84K
Value
6.58M
Filed
Jun 30, 2026
CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD.
CIK 1596800
Shares
282.39K
Value
6.52M
Filed
Jun 30, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
260.61K
Value
6.01M
Filed
Jun 30, 2026
TWO SIGMA INVESTMENTS, LP
CIK 1179392
Shares
254.37K
Value
5.87M
Filed
Jun 30, 2026
REGAL PARTNERS LTD
CIK 1577774
Shares
237.50K
Value
5.48M
Filed
Jun 30, 2026
SELDON CAPITAL LP
CIK 1867731
Shares
208.11K
Value
1.59M
Filed
Sep 30, 2023
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | AIGH CAPITAL MANAGEMENT LLC | 1835943 | 1.25M | 28.90M | Jun 30, 2026 |
| 2 | WASATCH ADVISORS LP | 814133 | 1.18M | 19.88M | Sep 30, 2026 |
| 3 | FIRST EAGLE INVESTMENT MANAGEMENT, LLC | 1325447 | 848.43K | 19.58M | Jun 30, 2026 |
| 4 | BLACKROCK, INC. | 2012383 | 763.49K | 17.62M | Jun 30, 2026 |
| 5 | AWM INVESTMENT COMPANY, INC. | 1535264 | 690K | 15.93M | Jun 30, 2026 |
| 6 | VANGUARD GROUP INC | 102909 | 631.90K | 7.93M | Dec 31, 2025 |
| 7 | ROYCE & ASSOCIATES LP | 906304 | 587.99K | 2.84M | Mar 31, 2025 |
| 8 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 580.50K | 13.40M | Jun 30, 2026 |
| 9 | ACADIAN ASSET MANAGEMENT LLC | 916542 | 580.28K | 13.39K | Jun 30, 2026 |
| 10 | DIMENSIONAL FUND ADVISORS LP | 354204 | 426.69K | 9.84M | Jun 30, 2026 |
| 11 | PACIFIC RIDGE CAPITAL PARTNERS, LLC | 1591546 | 405.37K | 4.73M | Mar 31, 2026 |
| 12 | MARSHALL WACE, LLP | 1318757 | 398.56K | 9.20M | Jun 30, 2026 |
| 13 | JANE STREET GROUP, LLC | 1595888 | 354.87K | 8.19M | Jun 30, 2026 |
| 14 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1164508 | 308.90K | 7.13M | Jun 30, 2026 |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 284.84K | 6.58M | Jun 30, 2026 |
| 16 | CONNOR, CLARK & LUNN INVESTMENT MANAGEMENT LTD. | 1596800 | 282.39K | 6.52M | Jun 30, 2026 |
| 17 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 260.61K | 6.01M | Jun 30, 2026 |
| 18 | TWO SIGMA INVESTMENTS, LP | 1179392 | 254.37K | 5.87M | Jun 30, 2026 |
| 19 | REGAL PARTNERS LTD | 1577774 | 237.50K | 5.48M | Jun 30, 2026 |
| 20 | SELDON CAPITAL LP | 1867731 | 208.11K | 1.59M | Sep 30, 2023 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.