ATEYY Advantest Corporation
Advantest Corporation (ATEYY) Institutional Ownership
What the institutions did with ATEYY last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Boston Common Asset Management, LLC | 32.4K | 38.8% |
| RHUMBLINE ADVISERS | 17.5K | 20.9% |
| Ativo Capital Management LLC | 13.6K | 16.3% |
| GAMMA Investing LLC | 5.7K | 6.8% |
| Canopy Partners, LLC | 3.8K | 4.5% |
| Diversified Trust Co | 3.1K | 3.7% |
| YOUSIF CAPITAL MANAGEMENT, LLC | 2.3K | 2.7% |
| Calydon Capital | 1.4K | 1.7% |
| Enterprise Financial Services Corp | 1.2K | 1.4% |
| Westside Investment Management, Inc. | 800 | 1.0% |
| PNC FINANCIAL SERVICES GROUP, INC. | 704 | 0.8% |
| Salomon & Ludwin, LLC | 445 | 0.5% |
| ATLAS CAPITAL ADVISORS INC. | 270 | 0.3% |
| First Command Advisory Services, Inc. | 167 | 0.2% |
| IMA Advisory Services, Inc. | 127 | 0.2% |
| HUNTINGTON NATIONAL BANK | 56 | 0.1% |
| Gleason Group, Inc. | 26 | 0.0% |
| Horrell Capital Management, Inc. | 13 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| YOUSIF CAPITAL MANAGEMENT, LLC | Reduced | 7.6K | 2.3K | -5.3K |
| RHUMBLINE ADVISERS | Increased | 14.9K | 17.5K | +2.6K |
| Ativo Capital Management LLC | Increased | 11.9K | 13.6K | +1.7K |
| Calydon Capital | New | 0 | 1.4K | +1.4K |
| Enterprise Financial Services Corp | New | 0 | 1.2K | +1.2K |
| Boston Common Asset Management, LLC | Increased | 31.8K | 32.4K | +639 |
| Accent Capital Management, LLC | Sold Out | 464 | 0 | -464 |
| ATLAS CAPITAL ADVISORS INC. | New | 0 | 270 | +270 |
| GAMMA Investing LLC | Increased | 5.4K | 5.7K | +258 |
| Diversified Trust Co | Increased | 2.9K | 3.1K | +205 |
| First Command Advisory Services, Inc. | Increased | 21 | 167 | +146 |
| IMA Advisory Services, Inc. | Increased | 25 | 127 | +102 |
| PNC FINANCIAL SERVICES GROUP, INC. | Increased | 613 | 704 | +91 |
| Salomon & Ludwin, LLC | Reduced | 530 | 445 | -85 |
| HUNTINGTON NATIONAL BANK | Increased | 1 | 56 | +55 |
| Ancora Advisors LLC | Sold Out | 34 | 0 | -34 |
| Gleason Group, Inc. | New | 0 | 26 | +26 |
| Canopy Partners, LLC | Increased | 3.8K | 3.8K | +1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.