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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 -60.60. In total, the insiders bought 147.18K and sold 79.27K 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
|
-60.60 |
| ● Buy | 147.18K shares |
| ● Sell | 79.27K shares |
|
55% Buy Activity
Weak Positive Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
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 |
||
|
Apr 08, 2026 Sell |
Mills Regan President, Product Test |
16 Value: $5K |
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|
Apr 06, 2026 Sell |
Johnson Mercedes Director |
625 Value: $195.1K |
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|
Apr 02, 2026 Sell |
Mills Regan President, Product Test |
252 Value: $73.3K |
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|
Apr 01, 2026 Sell |
Mills Regan President, Product Test |
222 Value: $69.3K |
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Apr 01, 2026 Sell |
Poulin Shannon John President, Semiconductor Test |
1 162 Value: $362.8K |
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|
Mar 26, 2026 Buy |
Henry Andrew Chisholm Director |
75 Value: $22.3K |
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Mar 26, 2026 Buy |
Herweck Peter Director |
92 Value: $27.4K |
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|
Mar 26, 2026 Buy |
Tufano Paul J Director |
159 Value: $47.3K |
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|
Mar 13, 2026 Buy |
Tufano Paul J Director |
25 Value: $7K |
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Mar 13, 2026 Buy |
Maddock Ernest E Director |
2 Value: $573 |
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|
Mar 13, 2026 Buy |
Herweck Peter Director |
5 Value: $1K |
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Mar 05, 2026 Sell |
Johnson Mercedes Director |
625 Value: $187.0K |
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|
Feb 25, 2026 Sell |
Mills Regan President, Product Test |
788 Value: $262.3K |
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|
Feb 05, 2026 Sell |
Johnson Mercedes Director |
625 Value: $166.9K |
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|
Feb 04, 2026 Buy |
Hathout Jean Pierre President, Teradyne Robotics |
1 004 Value: $270.1K |
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|
Feb 04, 2026 Buy |
Driscoll Ryan Vp, General Counsel, Secretary |
1 575 Value: $423.8K |
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|
Feb 04, 2026 Buy |
Poulin Shannon John President, Semiconductor Test |
3 937 Value: $1.06M |
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|
Feb 04, 2026 Buy |
Smith Gregory Stephen President And CEO |
13 380 Value: $3.60M |
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|
Feb 04, 2026 Buy |
Smith Gregory Stephen President And CEO |
11 810 Value: $3.18M |
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
