Teradyne, Inc.
Teradyne, Inc. (TER) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · TER · as of Mar 31, 2025
Ownership Breakdown
790
Institutional Holders
▼ 32 vs Q4
$12.85B
Total Inst. Value
▼ $7.53B vs Q4
156.54M
Shares Outstanding
freeFloat 99.79%
155.63M
13F Shares Held
▼ 4.06M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
TER largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC instruments for meas & testing of electricity & elec signals | 20.92M | 12.95% | 12.95% | $1.73T | May 9, 2025 | ▲ 516.3K |
BLACKROCK, INC. instruments for meas & testing of electricity & elec signals | 16.40M | 10.15% | 10.15% | $1.35T | May 2, 2025 | ▲ 541.8K |
FMR LLC instruments for meas & testing of electricity & elec signals | 7.91M | 4.90% | 4.90% | $653.43B | May 12, 2025 | ▼ 3.69M |
STATE STREET CORP instruments for meas & testing of electricity & elec signals | 7.03M | 4.35% | 4.35% | $580.34B | May 15, 2025 | ▲ 36.8K |
VAN ECK ASSOCIATES CORP instruments for meas & testing of electricity & elec signals | 5.44M | 3.37% | 3.37% | $449.32B | May 15, 2025 | ▲ 511.6K |
JPMORGAN CHASE & CO instruments for meas & testing of electricity & elec signals | 4.80M | 2.97% | 2.97% | $396.73B | May 12, 2025 | ▼ 126.1K |
AMERIPRISE FINANCIAL INC instruments for meas & testing of electricity & elec signals | 4.78M | 2.96% | 2.96% | $394.58B | May 14, 2025 | ▼ 51.6K |
GEODE CAPITAL MANAGEMENT, LLC instruments for meas & testing of electricity & elec signals | 4.27M | 2.64% | 2.64% | $351.31B | May 13, 2025 | ▲ 160.4K |
SUMITOMO MITSUI TRUST HOLDINGS, INC. instruments for meas & testing of electricity & elec signals | 2.96M | 1.83% | 1.83% | $244.25B | Apr 25, 2025 | ▲ 131.2K |
INVESCO LTD. instruments for meas & testing of electricity & elec signals | 2.79M | 1.73% | 1.73% | $230.53B | May 12, 2025 | ▲ 387.7K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
30
Increased
+11.70M shares2
New Positions
first time holders18
Decreased
−5.76M shares0
Sold Out
fully exitedNet shares change (top 50)
+5.94M
+11.70M / −5.76M
Net new holders
+14
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
TER insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
5
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Poulin Shannon John President, Semiconductor Test | May 21, 2026 | Tax Withhold | 1,531 | $345.98 | $529.7K | 16.4K | Form 4 ↗ |
Poulin Shannon John President, Semiconductor Test | May 22, 2026 | Sale | 656 | $355.00 | $232.9K | 15.7K | Form 4 ↗ |
Poulin Shannon John President, Semiconductor Test | May 21, 2026 | Sale | 1,008 | $345.37 | $348.1K | 15.1K | Form 4 ↗ |
MATZ MARILYN director | May 21, 2026 | Sale | 400 | $350.00 | $140.0K | 18.6K | Form 4 ↗ |
Smith Gregory Stephen President and CEO | May 15, 2026 | Sale | 8,597 | $338.98 | $2.91M | 124.5K | Form 4 ↗ |
MATZ MARILYN director | May 15, 2026 | Sale | 800 | $338.98 | $271.2K | 19.0K | Form 4 ↗ |
Herweck Peter director | May 8, 2026 | Award | 668 | — | — | 16.1K | Form 4 ↗ |
JOHNSON MERCEDES director | May 8, 2026 | Award | 668 | — | — | 7.0K | Form 4 ↗ |
MATZ MARILYN director | May 8, 2026 | Award | 668 | — | — | 19.8K | Form 4 ↗ |
van Kralingen Bridget A director | May 8, 2026 | Award | 668 | — | — | 6.2K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Teradyne, Inc. (TER) is primarily owned by institutional investors, who hold approximately 99.4% of total shares outstanding. Company insiders own approximately 0.21%, while retail and public investors account for the remaining 0.37%.
The largest institutional shareholder of Teradyne, Inc. is VANGUARD GROUP INC, holding approximately 20.92 million shares — equal to 12.95% of outstanding shares — as of March 31, 2025.
A total of 790 institutional investors currently hold TER stock, with a combined institutional value of approximately $12.85 billion as of the most recent 13F filing period.
Frequently asked questions
TER ownershipTeradyne, Inc. (TER) is primarily owned by institutional investors, who hold approximately 99.4% of shares. The largest shareholder is VANGUARD GROUP INC with a 12.95% stake. Company insiders hold 0.21%. Data sourced from SEC Form 13F as of March 31, 2025.