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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 -44.46. In total, the insiders bought 146.92K and sold 75.89K 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
|
-44.46 |
| ● Buy | 146.92K shares |
| ● Sell | 75.89K shares |
|
51% Buy Activity
Moderate Positive Correlation
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Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Jan 27, 2026 Sell |
Driscoll Ryan Vp, General Counsel, Secretary |
113 Value: $27.0K |
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|
Jan 27, 2026 Buy |
Smith Gregory Stephen President And CEO |
59 475 Value: $14.2M |
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|
Jan 27, 2026 Sell |
Smith Gregory Stephen President And CEO |
30 610 Value: $7.31M |
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|
Jan 27, 2026 Sell |
Mills Regan President, Product Test |
193 Value: $46.1K |
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|
Jan 05, 2026 Sell |
Johnson Mercedes Director |
625 Value: $132.4K |
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|
Dec 17, 2025 Buy |
Tufano Paul J Director |
36 Value: $7K |
||
|
Dec 17, 2025 Buy |
Herweck Peter Director |
148 Value: $27.4K |
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|
Dec 17, 2025 Buy |
Tufano Paul J Director |
256 Value: $47.4K |
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|
Dec 17, 2025 Buy |
Maddock Ernest E Director |
2 Value: $370 |
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|
Dec 17, 2025 Buy |
Herweck Peter Director |
7 Value: $1K |
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Dec 12, 2025 Sell |
Smith Gregory Stephen President And CEO |
1 108 Value: $223.1K |
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|
Dec 05, 2025 Sell |
Johnson Mercedes Director |
625 Value: $125.0K |
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|
Nov 12, 2025 Sell |
Smith Gregory Stephen President And CEO |
1 108 Value: $199.7K |
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|
Nov 05, 2025 Buy |
Smith Gregory Stephen President And CEO |
2 072 Value: $76.1K |
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|
Nov 05, 2025 Sell |
Johnson Mercedes Director |
625 Value: $110.7K |
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Nov 05, 2025 Buy |
Smith Gregory Stephen President And CEO |
2 072 Value: $76.1K |
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|
Nov 05, 2025 Sell |
Smith Gregory Stephen President And CEO |
1 224 Value: $216.7K |
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Nov 03, 2025 Buy |
Turner Michelle L. Chief Financial Officer |
11 144 Value: $2.04M |
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Nov 03, 2025 Buy |
Turner Michelle L. Chief Financial Officer |
9 156 Value: $1.68M |
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|
Nov 03, 2025 Buy |
Turner Michelle L. Chief Financial Officer |
0 Value: $0 |
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|
Oct 10, 2025 Sell |
Smith Gregory Stephen President And CEO |
1 108 Value: $160.9K |
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|
Oct 10, 2025 Sell |
Smith Gregory Stephen President And CEO |
1 108 Value: $160.9K |
||
|
Oct 06, 2025 Sell |
Johnson Mercedes Director |
625 Value: $92.4K |
||
|
Oct 06, 2025 Sell |
Johnson Mercedes Director |
625 Value: $92.4K |
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|
Sep 29, 2025 Buy |
Maddock Ernest E Director |
3 Value: $403 |
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
