TER: TERADYNE INC insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 3 sales totaling $1.71M in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-15 | Smith Gregory Stephen | CEO | $1.37M | yes |
| 2026-10-15 | Matz Marilyn | Director | $273K | yes |
| 2026-10-01 | Johnson Mercedes | Director | $67K | yes |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-07-30 | 13G amendment | BlackRock, Inc. | 11.10% | SEC |
Institutional ownership (Q2 2026)
1,430 institutions reported holding $69.82B of TERADYNE INC on Form 13F (1,235 the quarter before). 319 opened a new position and 129 sold out. Shares held by institutions: +5%.
| Largest holders | Shares | Value |
|---|---|---|
| BlackRock, Inc. | 19,437,021 | $9.40B |
| VANGUARD CAPITAL MANAGEMENT LLC | 10,225,398 | $4.95B |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 8,633,782 | $4.18B |
| STATE STREET CORP | 7,290,460 | $3.53B |
| Invesco Ltd. | 6,683,098 | $3.23B |
| JPMORGAN CHASE & CO | 5,570,053 | $2.58B |
| GEODE CAPITAL MANAGEMENT, LLC | 4,602,292 | $2.22B |
| FMR LLC | 4,105,776 | $1.99B |
| AMERIPRISE FINANCIAL INC | 2,719,428 | $1.32B |
| VAN ECK ASSOCIATES CORP | 2,607,914 | $1.26B |
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