Teradyne, Inc. (TER) ownership: insiders 0% · institutions 37% · index and ETF funds 59% (13F 2026-03-31). Insider activity, 90 days: Routine (8 sales, 0 open-market buys). 10 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| Vanguard | 20379985.00 | $6.04B | 13.0% | 2026-03-31 |
| BlackRock | 16305187.00 | $4.83B | 10.4% | 2026-03-31 |
| State Street | 6970426.00 | $2.07B | 4.5% | 2026-03-31 |
| Geode Capital Management | 4368680.00 | $1.29B | 2.8% | 2026-03-31 |
| FMR (Fidelity) | 3609505.00 | $1.07B | 2.3% | 2026-03-31 |
| UBS | 3075442.00 | $911.75M | 2.0% | 2026-03-31 |
| Ameriprise (Columbia) | 2843976.00 | $842.98M | 1.8% | 2026-03-31 |
| Alkeon Capital Management LLC | 2789510.00 | $826.98M | 1.8% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-09-01 | |
| Sell | null | 2026-08-17 | |
| Sell | null | 2026-08-17 | |
| Sell | null | 2026-08-03 | |
| Sell | null | 2026-07-15 | |
| Sell | null | 2026-07-15 | |
| Sell | null | 2026-06-25 | |
| Sell | null | 2026-06-25 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.