Teradyne Inc (TER)
Who owns Teradyne Inc (TER)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.8% of the shares are freely tradable; institutional investors hold 96.5%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Group Inc | 12.97 | 20,298,150 | -5.2 | 12/31/2025 |
| BlackRock Inc | 10.42 | 16,305,187 | +5.9 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.50 | 10,176,191 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 5.50 | 8,602,918 | +0.0 | 03/31/2026 |
| State Street Corp | 4.45 | 6,970,426 | -1.5 | 03/31/2026 |
| Geode Capital Management, LLC | 2.79 | 4,368,680 | +4.9 | 03/31/2026 |
| FMR Inc | 2.31 | 3,609,505 | +47.6 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 3.19 | 4,986,484 | +0.3 | 04/30/2026 |
| Vanguard 500 Index Investor | 2.59 | 4,061,076 | +1.8 | 04/30/2026 |
| Vanguard Mid Cap Index Institutional | 2.17 | 3,389,444 | +0.2 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 15. Jul 2026 | Smith Gregory Stephen | President and CEO | Sell | 4,000 | 356.31 | 1,425,240 |
| 15. Jul 2026 | Matz Marilyn | Director | Sell | 1,200 | 356.31 | 427,572 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.