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
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, +2 vs. previous quarter
- 18
- 13F valueReported value at the end of Q2 2026
- $17.3M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Superinvestors holding ATEYY, Q2 2026
No superinvestor reported holding ATEYY at the end of Q2 2026.
Latest insider trades
Open-market purchases and sales by Advantest Corp insiders from Form 4, newest first.
No open-market purchases or sales by Advantest Corp insiders are on file.
Top 10 13F holders, Q2 2026
The largest institutional positions in Advantest Corp at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Boston Common Asset Management, LLC | 32,439 | $6.75M | 0.40% | +639+2.0% | Added |
| Rhumbline Advisers | 17,524 | $3.65M | 0.00% | +2,580+17.3% | Added |
| Ativo Capital Management LLC | 13,637 | $2.84M | 2.17% | +1,711+14.3% | Added |
| GAMMA Investing LLC | 5,684 | $1.18M | 0.04% | +258+4.8% | Added |
| Canopy Partners, LLC | 3,766 | $783.6K | 0.24% | +10.0% | Added |
| Diversified Trust Co | 3,095 | $615.9K | 0.01% | +205+7.1% | Added |
| Yousif Capital Management, LLC | 2,267 | $451.1K | 0.01% | −5,330−70.2% | Reduced |
| Principal Street Partners, LLC | 1,433 | $298.1K | 0.04% | +1,433 | New |
| Enterprise Financial Services Corp | 1,211 | $252.0K | 0.10% | +1,211 | New |
| Westside Investment Management, Inc. | 800 | $166.4K | 0.02% | 00.0% | Unchanged |