Teradyne
Builds semiconductor and electronics test systems alongside collaborative and autonomous mobile robots.
$356.69
After-hours close+1.95 (+0.55%)
At close$354.74(−4.66%)
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Breakdown13F · Form 4
Institutions 171.69%Insiders 0.20%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 156.34M · Float 156.01M · 99.8% free float
Institutions13F, as of Jun 30, 2026
1,492 holders · 268.43M shares · 340 new positions · 832 increased · 467 reduced · 142 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 19.44M | 12.43% | +3.13M | Aug 7, 2026 |
| Vanguard Capital Management LLC | 10.23M | 6.54% | +49.2K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 8.63M | 5.52% | +30.9K | Aug 13, 2026 |
| State Street Corp | 7.29M | 4.66% | +320.0K | Aug 7, 2026 |
| Invesco Ltd. | 6.68M | 4.27% | +4.16M | Aug 14, 2026 |
| JPMorgan Chase & Co | 5.57M | 3.56% | +2.70M | Aug 12, 2026 |
| Geode Capital Management, LLC | 4.60M | 2.94% | +233.6K | Aug 12, 2026 |
| FMR LLC | 4.11M | 2.63% | +496.3K | Aug 13, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 10.10% | 15.85M | 13G | Jun 4, 2026 ↗ |
| Vanguard Capital Management | 7.49% | 11.73M | 13G | Apr 29, 2026 ↗ |
| Vanguard Portfolio Management | 5.50% | 8.62M | 13G | Apr 29, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Gregory Stephen Smith | director, officer: President and CEO | 112.5K | 0.07% | Aug 18, 2026 |
| Paul J. Tufano | director | 65.8K | 0.04% | Jun 29, 2026 |
| Ujjwal Kumar | officer: President, Teradyne Robotics | 16.4K | 0.01% | Aug 5, 2025 |
| Peter Herweck | director | 16.2K | 0.01% | Jun 29, 2026 |
| Shannon John Poulin | officer: President, Semiconductor Test | 15.7K | 0.01% | May 26, 2026 |
| Marilyn Matz | director | 15.0K | 0.01% | Aug 18, 2026 |
| Regan Mills | officer: President, Product Test | 11.4K | 0.01% | Apr 9, 2026 |
| Michelle L. Turner | officer: Chief Financial Officer | 11.3K | 0.01% | Nov 5, 2025 |
| Ernest E. Maddock | director | 10.3K | 0.01% | Jun 16, 2026 |
| Jean Pierre Hathout | officer: President, Teradyne Robotics | 10.2K | 0.01% | Feb 6, 2026 |
28 people have not refiled in the last 18 months (1.44M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 17, 2026 | Gregory Stephen Smithdirector, officer: President and CEO | Sale | 4,000 | $425.00 | 112,495 |
| Aug 17, 2026 | Marilyn Matzdirector | Sale | 1,200 | $425.00 | 15,041 |
| Aug 3, 2026 | Mercedes Johnsondirector | Sale | 166 | $358.15 | 6,531 |
| Jul 15, 2026 | Marilyn Matzdirector | Sale | 1,200 | $356.31 | 16,241 |
| Jul 15, 2026 | Gregory Stephen Smithdirector, officer: President and CEO | Sale | 4,000 | $356.31 | 116,495 |
| Jul 1, 2026 | Mercedes Johnsondirector | Sale | 167 | $460.00 | 6,697 |
| Jun 15, 2026 | Gregory Stephen Smithdirector, officer: President and CEO | Sale | 4,000 | $423.03 | 120,470 |
| Jun 15, 2026 | Marilyn Matzdirector | Sale | 1,200 | $423.03 | 17,441 |
| May 21, 2026 | Marilyn Matzdirector | Sale | 400 | $350.00 | 18,641 |
| May 21, 2026 | Shannon John Poulinofficer: President, Semiconductor Test | Sale | 1,008 | $345.37 | 15,066 |
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Sen. Alan Armstrong | Purchase | $1,001 – $15,000 | Joint | Mar 27, 2026 | Jul 21, 2026 ↗ |
| Rep. Ro Khanna · CA17 | Purchase | $1,001 – $15,000 | May 1, 2026 | Jun 11, 2026 ↗ | |
| Rep. Michael McCaul · TX10 | Purchase | $15,001 – $50,000 | Spouse | Apr 29, 2026 | May 11, 2026 ↗ |