Who owns Teradyne (TER)?
167 holders named in SEC filings declare between 65.5% and 91.0% of Teradyne's shares outstanding, as of Sep 15, 2026. The largest are Vanguard (13.1%), BlackRock (12.4%) and State Street (4.7%); the five largest hold 38.0% together. Another 1,252 institutions hold small positions worth 6.4%. At least 2.7% of the shares appear in no ownership filing: investors who do not have to report, mostly individuals. From Mar 31, 2026 to Jun 30, 2026, institutions that filed both quarters bought 16.8% and sold 13.6% of the shares, a net purchase of 3.2%; 299 opened a position, 474 added, 452 reduced and 121 sold out. Biggest buyers: Invesco (+4.2M shares) and BlackRock (+3.1M shares). Biggest sellers: Point72 (-1.8M) and Assenagon Asset Management S.A. (-1.4M). Schedule 13D/G filings since Mar 31, 2026: BlackRock, Inc. raised its stake to 11.2% on Jun 30, 2026. Over time, 1,400 managers declared Teradyne in their 13F for Q2 2026, against 485 for Q4 2019: together at most 97.1% of the shares outstanding, against 96.4%.
| Holder | Filing | Share of capital | As of | Holding since (13F) |
|---|---|---|---|---|
| Vanguard | 13F | 13.1% | Jun 30, 2026 | Q4 2019 or earlier |
| BlackRock | 13F | 12.4% | Jun 30, 2026 | Q4 2019 or earlier |
| State Street | 13F | 4.7% | Jun 30, 2026 | Q4 2019 or earlier |
| Invesco | 13F | 4.3% | Jun 30, 2026 | Q4 2019 or earlier |
| JPMorgan | 13F | 3.6% | Jun 30, 2026 | Q4 2019 or earlier |
| Geode Capital | 13F | 2.9% | Jun 30, 2026 | Q4 2019 or earlier |
| Fidelity (FMR) | 13F | 2.6% | Jun 30, 2026 | Q4 2019 or earlier |
| UBS | 13F | 2.3% | Jun 30, 2026 | Q4 2019 or earlier |
| T. Rowe Price | 13F | 2.1% | Jun 30, 2026 | Q4 2019 or earlier |
| Ameriprise Financial, Inc. | 13F | 1.7% | Jun 30, 2026 | Q4 2019 or earlier |
| VanEck | 13F | 1.7% | Jun 30, 2026 | Q4 2019 or earlier |
| AQR | 13F | 1.5% | Jun 30, 2026 | Q4 2019 or earlier |
| Norges Bank | 13F | 1.4% | Jun 30, 2026 | Q4 2019 or earlier |
| ALKEON CAPITAL MANAGEMENT LLC | 13F | 1.4% | Jun 30, 2026 | Q4 2019 or earlier |
| Goldman Sachs | 13F | 1.3% | Jun 30, 2026 | Q4 2019 or earlier |
| Morgan Stanley | 13F | 1.2% | Jun 30, 2026 | Q4 2019 or earlier |
| Bank of America | 13F | 1.1% | Jun 30, 2026 | Q4 2019 or earlier |
| Rafferty Asset Management, LLC | 13F | 0.97% | Jun 30, 2026 | Q4 2019 or earlier |
| Northern Trust | 13F | 0.96% | Jun 30, 2026 | Q4 2019 or earlier |
| Lone Pine Capital LLC | 13F | 0.96% | Jun 30, 2026 | Q1 2026 |
| Legal & General | 13F | 0.87% | Jun 30, 2026 | Q4 2019 or earlier |
| Barclays | 13F | 0.82% | Jun 30, 2026 | Q4 2019 or earlier |
| Amundi | 13F | 0.77% | Jun 30, 2026 | Q4 2019 or earlier |
| Sumitomo Mitsui Trust Group, Inc. | 13F | 0.71% | Jun 30, 2026 | Q4 2019 or earlier |
| CITIGROUP INC | 13F | 0.69% | Jun 30, 2026 | Q4 2019 or earlier |
Teradyne institutional ownership over time
| Quarter | 13F managers | Share of the company (upper bound) | Value declared | Held by stock pickers |
|---|---|---|---|---|
| Q4 2019 | 485 | 96.4% | $10.9B | 60.2% |
| Q4 2020 | 645 | 95.2% | $19.0B | 58.5% |
| Q4 2021 | 718 | 96.3% | $25.7B | 60.5% |
| Q4 2022 | 634 | 99.7% | $13.6B | 57.8% |
| Q4 2023 | 703 | 102.7% | $17.0B | 55.1% |
| Q4 2024 | 766 | 98.0% | $20.1B | 50.8% |
| Q4 2025 | 1,022 | 96.4% | $29.2B | 48.3% |
| Q2 2026 | 1,400 | 97.1% | $73.2B | 43.6% |
From SEC Form 13F, every quarter since the end of 2019, read like the current quarter: entities of a house summed, a value contradicting its share count set aside. The share of the company is an upper bound — two managers can declare the same shares — over the shares outstanding at that date.