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, Q3 2025
Institutional positions in Advantest Corp as of Sep 30, 2025. 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
- 11
- −2 vs. Q2 2025
- Shares held
- 98.1K
- −13.8K (−12.4%) vs. Q2 2025
- Total value
- $9.78M
- +$1.52M (+18.3%) vs. Q2 2025
- New holders
- 1
- 5 more added
- Sold out
- 3
- 4 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Advantest Corp; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Boston Common Asset Management, LLC | 51,488 | $5.11M | 0.14% | +2,496+5.1% | Added |
| Madison Asset Management, LLC | 14,946 | $1.50M | 0.02% | −8,701−36.8% | Reduced |
| Rhumbline Advisers | 10,549 | $1.06M | 0.00% | −373−3.4% | Reduced |
| Yousif Capital Management, LLC | 7,672 | $761.0K | 0.01% | −4,650−37.7% | Reduced |
| GAMMA Investing LLC | 4,696 | $471.9K | 0.03% | +414+9.7% | Added |
| Canopy Partners, LLC | 3,948 | $396.8K | 0.13% | +64+1.6% | Added |
| Diversified Trust Co | 2,664 | $264.3K | 0.01% | +2,664 | New |
| Westside Investment Management, Inc. | 1,752 | $179.1K | 0.03% | +876+100.0% | Added |
| Salomon & Ludwin, LLC | 243 | $25.9K | 0.00% | +234+2,600.0% | Added |
| The PNC Financial Services Group, Inc. | 130 | $13.1K | 0.00% | −2−1.5% | Reduced |
| Huntington National Bank | 1 | $101 | 0.00% | 00.0% | Unchanged |
| Comprehensive Financial Planning, Inc. | 0 | $0 | 0.00% | −3,738−100.0% | Sold out |
| Principal Street Partners, LLC | 0 | $0 | 0.00% | −3,016−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −113−100.0% | Sold out |
| First Horizon Advisors, Inc. | – | – | – | – | Not filed |