Teradyne Inc. stock gains as CEO sells shares and India office opens

Teradyne Inc. stock (ISIN US8807701029) ended the September 17, 2026 session at USD 341.15 on Nasdaq, up 2.49 percent from the previous close and still trading well below its recent 52-week high, according to price data from Bolsamania.

Insider sale and valuation signal

In a recent regulatory disclosure, Teradyne President and CEO Gregory Smith reported the sale of 4,000 Teradyne shares on September 15, 2026, at a transaction price of USD 337.83 per share, giving a deal value of roughly USD 1,351,320 and implying a market capitalization of about USD 53.6 billion at that moment, according to GuruFocus.

Following the transaction, the CEO retained 108,495.4075 Teradyne shares, and the same analysis estimated a GF Value of USD 216.95 per share, putting Teradyne at a price-to-GF-Value ratio of 1.56 and classifying the stock as significantly overvalued on that metric, as outlined by GuruFocus.

Price performance and range

Price data from Bolsamania show that Teradyne shares closed at USD 341.15 on Nasdaq on September 17, 2026, after gaining USD 8.30 or 2.49 percent compared with the prior session’s close of USD 332.85, with intraday trading between a low of USD 336.57 and a high of USD 347.00 on that day, according to Bolsamania.

The same overview indicates that Teradyne’s 52-week high stands at USD 487.91 and the 52-week low at USD 114.32, meaning the September 17, 2026 closing price of USD 341.15 leaves the stock about 30.1 percent below the high and roughly 198.4 percent above the low, providing investors with a sense of both the magnitude of the earlier rally and the scale of the subsequent correction, based on data compiled by Bolsamania.

Analyst view and competitive positioning

In a comparative analysis of AI-exposed semiconductor names published on September 16, 2026, Zacks highlighted Teradyne as more favorably positioned than a peer, noting that Teradyne trades at a forward 12-month price-earnings multiple of 30.99, higher than the 21.04 times forward earnings valuation of its comparator, and assigning Teradyne a Zacks Rank 1, classified as Strong Buy, versus a Rank 3 or Hold for the peer, according to Zacks.

For investors, the contrast between the valuation-based overvaluation signal from the GF Value metric and the Strong Buy rating with a premium forward P/E underscores how different frameworks can yield diverging assessments of Teradyne’s current share price, leaving the insider sale and the distance to the 52-week high as additional factors to weigh in their judgment.

Operational expansion in India

Beyond the stock metrics, Teradyne is expanding its operational footprint to align with semiconductor growth in Asia. As reported on September 17, 2026, the company is marking the opening of a new office in Bengaluru with a celebration on September 15, 2026, attended by Teradyne executives, government officials and industry partners from across India’s semiconductor ecosystem, according to Engineering.com.

The Bengaluru site is intended to support chip manufacturing and test solutions for Indian and regional customers, illustrating how Teradyne is seeking to capture demand tied to global semiconductor investment cycles, even as its shares fluctuate between the elevated valuation flagged by some metrics and the sizeable gap to their June 2026 52-week high in recent trading.

Teradyne Inc. stock at a glance

As of the close on September 17, 2026, Teradyne Inc. stock was quoted at USD 341.15 on Nasdaq, representing the primary listing venue for the shares and providing a reference point that sits comfortably between the 52-week low of USD 114.32 and the 52-week high of USD 487.91 that were both recorded over the past year per Bolsamania data.

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