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Buy TER
Teradyne Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -54.12. In total, the insiders bought 146.95K and sold 76.72K TER shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
-54.12 |
| ● Buy | 146.95K shares |
| ● Sell | 76.72K shares |
|
54% Buy Activity
Weak Positive Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Jun 15, 2026 Sell |
Matz Marilyn Director |
1 200 Value: $507.6K |
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|
Jun 15, 2026 Sell |
Smith Gregory Stephen President And CEO |
4 000 Value: $1.69M |
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|
Jun 12, 2026 Buy |
Herweck Peter Director |
4 Value: $2K |
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|
Jun 12, 2026 Buy |
Maddock Ernest E Director |
2 Value: $806 |
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|
Jun 12, 2026 Buy |
Tufano Paul J Director |
19 Value: $8K |
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|
May 22, 2026 Sell |
Poulin Shannon John President, Semiconductor Test |
656 Value: $232.9K |
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|
May 21, 2026 Sell |
Matz Marilyn Director |
400 Value: $140.0K |
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|
May 21, 2026 Sell |
Poulin Shannon John President, Semiconductor Test |
1 008 Value: $348.1K |
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|
May 21, 2026 Sell |
Poulin Shannon John President, Semiconductor Test |
1 531 Value: $529.7K |
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|
May 21, 2026 Buy |
Poulin Shannon John President, Semiconductor Test |
2 843 Value: $234.9K |
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|
May 21, 2026 Buy |
Poulin Shannon John President, Semiconductor Test |
2 843 Value: $234.9K |
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|
May 15, 2026 Buy |
Smith Gregory Stephen President And CEO |
4 597 Value: $331.4K |
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May 15, 2026 Buy |
Smith Gregory Stephen President And CEO |
4 597 Value: $331.4K |
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|
May 15, 2026 Sell |
Smith Gregory Stephen President And CEO |
8 597 Value: $2.91M |
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|
May 15, 2026 Sell |
Matz Marilyn Director |
800 Value: $271.2K |
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|
May 08, 2026 Buy |
Henry Andrew Chisholm Director |
668 Value: $240.3K |
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May 08, 2026 Buy |
Tufano Paul J Director |
668 Value: $240.3K |
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|
May 08, 2026 Buy |
Van Kralingen Bridget A Director |
668 Value: $240.3K |
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|
May 08, 2026 Buy |
Matz Marilyn Director |
668 Value: $240.3K |
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May 08, 2026 Buy |
Herweck Peter Director |
668 Value: $240.3K |
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|
May 08, 2026 Buy |
Johnson Mercedes Director |
668 Value: $240.3K |
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May 08, 2026 Buy |
Sayiner Necip Director |
668 Value: $240.3K |
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|
May 08, 2026 Buy |
Maddock Ernest E Director |
668 Value: $240.3K |
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|
May 07, 2026 Sell |
Driscoll Ryan Vp, General Counsel, Secretary |
680 Value: $256.8K |
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|
Apr 08, 2026 Sell |
Mills Regan President, Product Test |
16 Value: $5K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
