Advantest Corp
ATEYY- Exchange
- OTC
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001158838
No open-market purchases or sales by Advantest Corp insiders were filed in the last 90 days; 18 institutions reported holding it in 13F filings for Q2 2026, worth $17.3M in total; no superinvestor holds it.
Other share classesADTTF
13F holders, Q1 2026
Institutional positions in Advantest Corp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 16
- +3 vs. Q4 2025
- Shares held
- 80.8K
- −6.67K (−7.6%) vs. Q4 2025
- Total value
- $10.9M
- −$165.6K (−1.5%) vs. Q4 2025
- New holders
- 4
- 6 more added
- Sold out
- 1
- 5 more reduced
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ATEYY on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 18 | $17.3M |
| Q1 2026 | 16 | $10.9M |
| Q4 2025 | 13 | $11.1M |
| Q3 2025 | 11 | $9.78M |
| Q2 2025 | 14 | $8.27M |
| Q1 2025 | 7 | $1.24M |
| Q4 2024 | 8 | $2.02M |
| Q3 2024 | 7 | $1.25M |
| Q2 2024 | 7 | $1.24M |
| Q1 2024 | 8 | $2.66M |
| Q4 2023 | 7 | $2.58M |
| Q3 2023 | 8 | $2.37M |
| Q2 2023 | 7 | $2.30M |
| Q1 2023 | 6 | $2.22M |
| Q4 2022 | 3 | $249.6K |
| Q3 2022 | 3 | $3.00K |
| Q2 2022 | 5 | $21.0K |
| Q1 2022 | 5 | $272.0K |
| Q4 2021 | 3 | $309.0K |
| Q3 2021 | 3 | $8.00K |
| Q2 2021 | 4 | $399.0K |
| Q1 2021 | 5 | $6.94M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Advantest Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Boston Common Asset Management, LLC | 31,800 | $4.32M | 0.28% | −8,281−20.7% | Reduced |
| Rhumbline Advisers | 14,944 | $2.03M | 0.00% | +959+6.9% | Added |
| Ativo Capital Management LLC | 11,926 | $1.62M | 1.41% | +26+0.2% | Added |
| Yousif Capital Management, LLC | 7,597 | $970.8K | 0.01% | 00.0% | Unchanged |
| GAMMA Investing LLC | 5,426 | $736.9K | 0.03% | +362+7.1% | Added |
| Canopy Partners, LLC | 3,765 | $511.3K | 0.18% | −11−0.3% | Reduced |
| Diversified Trust Co | 2,890 | $369.3K | 0.01% | +21+0.7% | Added |
| Westside Investment Management, Inc. | 800 | $108.5K | 0.02% | −476−37.3% | Reduced |
| The PNC Financial Services Group, Inc. | 613 | $83.3K | 0.00% | +163+36.2% | Added |
| Salomon & Ludwin, LLC | 530 | $71.9K | 0.01% | +230+76.7% | Added |
| Accent Capital Management, LLC | 464 | $63.0K | 0.03% | +464 | New |
| Ancora Advisors, LLC | 34 | $4.62K | 0.00% | +34 | New |
| IMA Wealth, Inc. | 25 | $3.40K | 0.00% | −4−13.8% | Reduced |
| First Command Advisory Services, Inc. | 21 | $2.85K | 0.00% | +21 | New |
| Horrell Capital Management, Inc. | 13 | $1.77K | 0.00% | +13 | New |
| Huntington National Bank | 1 | $136 | 0.00% | −8−88.9% | Reduced |
| Signature Equity Partners, LLC | 0 | $0 | 0.00% | −188−100.0% | Sold out |