Teradyne, Inc
TER- Exchange
- Nasdaq
- Industry
- Instruments For Meas & Testing of Electricity & Elec Signals
- SEC CIK
- 0000097210
In the last 90 days, Teradyne, Inc insiders filed 0 open-market purchases and 10 sales; 1,428 institutions reported holding it in 13F filings for Q2 2026, worth $73.2B in total; 3 superinvestors hold it, including Lone Pine Capital and ARK Invest.
Holders of 5% or more of TER
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Teradyne, Inc, largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Teradyne, Inc on Schedule 13D or 13G.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
2 Schedule 13D and 13G filings on Teradyne, Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jul 29, 20252:40 PM ET | Vanguard Group Inc | 13G/A | 13.07%21.0M shares | – | Jun 30, 2025 | SEC |
| May 12, 202510:43 AM ET | FMR LLCand 1 other | 13G/A | 4.90%7.91M shares | −2.20 ppfrom 7.10%Below 5% | Mar 31, 2025 | SEC |
| Feb 12, 20259:22 AM ET | FMR LLCand 1 other | 13G/A | 7.10%11.6M shares | – | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Teradyne, Inc shares.
No Form 144 notices for Teradyne, Inc are on file.