Avoid the stress of overpaying for a stock or missing an opportunity by using the right tools and insights to evaluate Teradyne, Inc. before investing.

In this article, we go over a few key elements for understanding Teradyne, Inc.’s stock price such as:

• Teradyne, Inc.’s current stock price and volume
• Why Teradyne, Inc.’s stock price changed recently
• Upgrades and downgrades for TER from analysts
• TER’s stock price momentum as measured by its relative strength

About Teradyne, Inc. (TER)

Before we jump into Teradyne, Inc.’s stock price, history, target price and what caused it to recently rise, let’s take a look at some background.

Teradyne, Inc. engages in the design, development, manufacture, and sale of automated test systems and robotics products in the United States, Asia Pacific, Europe, the Middle East, and Africa. The company operates through Semiconductor Test, Robotics, and Other segments. The Semiconductor Test segment offers products and services for wafer level and device package testing, and system level testing of semiconductor devices in automotive, industrial, communications, consumer, smartphones, cloud, computer and electronic game, and other applications. This segment also provides FLEX test platform systems; J750 test system to address the volume semiconductor devices, including microcontrollers; Magnum platform that tests memory devices, such as flash memory and DRAM; and ETS platform for semiconductor manufacturers, and assembly and test subcontractors in the analog/mixed signal markets. It serves integrated device manufacturers that integrate the fabrication of silicon wafers into their business; fabless companies that outsource the manufacturing of silicon wafers; foundries; and semiconductor assembly and test providers. The Robotics segment provides collaborative robotic arms and autonomous mobile robots for manufacturing, logistics, and industrial customers. It also provides product test instruments which includes operations related to the design, manufacturing and marketing of products and services for defense/aerospace test, circuit-board test, wireless test systems, and silicon photonics testing. Teradyne, Inc. was incorporated in 1960 and is headquartered in North Reading, Massachusetts.

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Teradyne, Inc.’s Stock Price as of Market Close

As of May 21, 2026, 12:33 PM, CST, Teradyne, Inc.’s stock price was $352.650.

Teradyne, Inc. is up 2.41% from its previous closing price of $344.340.

During the last market session, Teradyne, Inc.’s stock traded between $343.330 and $352.790. Currently, there are approximately 156.41 million shares outstanding for Teradyne, Inc..

Teradyne, Inc.’s price-earnings (P/E) ratio is currently at 63.9, which is high compared to the Semiconductors & Semiconductor Equipment industry median of 62.9. The price-earnings ratio gauges market expectation of future performance by relating a stock’s current share price to its earnings per share.

Teradyne, Inc. Stock Price History

Teradyne, Inc.’s (TER) price is currently up 2.67% so far this month.

During the month of May, Teradyne, Inc.’s stock price has reached a high of $383.000 and a low of $309.410.

Over the last year, Teradyne, Inc. has hit prices as high as $422.110 and as low as $75.990. Year to date, Teradyne, Inc.’s stock is up 82.19%.

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What Caused Teradyne, Inc. Stock’s Price to Rise?

Stock prices are primarily based on seller supply and buyer demand. But have you ever wondered about what other factors affect a stock's price?

When an analyst changes their opinion of a stock by upgrading or downgrading their rating, it often leads to a sudden stock price adjustment. As of May 20, 2026, there was 1 analyst who downgraded Teradyne, Inc.’s stock and 0 analysts who upgraded over the last month.

Additionally, you'll want to evaluate Teradyne, Inc.’s financial health and valuation. Investors can use AAII's Value Grade, which combines six key valuation metrics like P/E and P/S ratios for a comprehensive analysis to conduct analysis on Teradyne, Inc.’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

Teradyne, Inc.’s current valuation based on AAII’s Value Grade is a F, which means it is considered to be Ultra Expensive.

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Lastly, news and media coverage as well as recent press reports about the company or its industry may cause stock prices to fluctuate. You can check out the most recent news articles about Teradyne, Inc. (TER) by visiting AAII Stock Evaluator.

Relative Price Strength of Teradyne, Inc.

Relative price strength measures a stock's performance against the market, helping investors identify stocks that are outperforming benchmarks.

For AAII’s Momentum Grade, a weighted relative price strength is calculated. Follow this link to learn more about the Momentum Grade.

As of May 20, 2026, Teradyne, Inc. has a weighted four-quarter relative price strength of 31.33%, which translates to a Momentum Score of 95 and is considered to be Very Strong.

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Teradyne, Inc. Stock Price: Bottom Line

As of May 21, 2026, Teradyne, Inc.’s stock price is $352.650, which is up 2.41% from its previous closing price.

AAII advises against making stock decisions based solely on price or past returns. Instead, consider a variety of metrics, fundamentals, and analytics to evaluate a stock like Teradyne, Inc. stock prices are influenced by market supply and demand and offer just a snapshot of a company's overall health.

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