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

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

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

About Onto Innovation Inc. (ONTO)

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

Onto Innovation Inc. engages in the design, development, manufacture, and support of process control tools that perform macro-defect inspection and metrology in the United States, Taiwan, South Korea, Japan, China, Southeast Asia, Asia, and Europe. The company offers lithography systems and process control analytical software; and automated and integrated metrology systems, silicon wafer all-surface inspection, macro defect inspection, automated defect classification and pattern analysis, yield analysis, opaque film metrology, 4D business, advanced packaging lithography, process control software, and yield management software products. It also provides process and yield management solutions, and device packaging and test facilities through standalone systems for optical metrology, macro-defect inspection, packaging lithography, and transparent and opaque thin film measurements. In addition, the company offers process control software portfolio that includes solutions for standalone tools, groups of tools, and factory-wide suites. Further, it engages in systems and software, spare parts, and other services, as well as offers software licensing services; and provides advanced product lines, such as FAaST, CnCV, and MBIR. The company’s products are used in semiconductor and advanced packaging device manufacturers; silicon wafers; semiconductor integrated circuit fabricators; light emitting diodes; vertical-cavity surface-emitting lasers; micro-electromechanical systems; CMOS image sensors; silicon and compound semiconductor power devices; analog devices; RF filters; data storage; and various industrial and scientific applications. Onto Innovation Inc. was founded in 1940 and is headquartered in Wilmington, Massachusetts.

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Onto Innovation Inc.’s Stock Price as of Market Close

As of September 04, 2026, 4:00 PM, CST, Onto Innovation Inc.’s stock price was $268.010.

Onto Innovation Inc. is up 6.16% from its previous closing price of $252.460.

During the last market session, Onto Innovation Inc.’s stock traded between $257.705 and $270.000. Currently, there are approximately 49.41 million shares outstanding for Onto Innovation Inc..

Onto Innovation Inc.’s price-earnings (P/E) ratio is currently at 100.1, which is high compared to the Semiconductors & Semiconductor Equipment industry median of 50.7. The price-earnings ratio gauges market expectation of future performance by relating a stock’s current share price to its earnings per share.

Onto Innovation Inc. Stock Price History

Onto Innovation Inc.’s (ONTO) price is currently up 0.3% so far this month.

During the month of September, Onto Innovation Inc.’s stock price has reached a high of $270.000 and a low of $244.463.

Over the last year, Onto Innovation Inc. has hit prices as high as $386.460 and as low as $102.500. Year to date, Onto Innovation Inc.’s stock is up 69.78%.

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What Caused Onto Innovation 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 September 04, 2026, there was 1 analyst who downgraded Onto Innovation Inc.’s stock and 0 analysts who upgraded over the last month.

Additionally, you'll want to evaluate Onto Innovation 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 Onto Innovation Inc.’s valuation and financial health. This approach mitigates the limitations of single-metric evaluations.

Onto Innovation 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 Onto Innovation Inc. (ONTO) by visiting AAII Stock Evaluator.

Relative Price Strength of Onto Innovation 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 September 04, 2026, Onto Innovation Inc. has a weighted four-quarter relative price strength of 17.24%, which translates to a Momentum Score of 90 and is considered to be Very Strong.

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Onto Innovation Inc. Stock Price: Bottom Line

As of September 4, 2026, Onto Innovation Inc.’s stock price is $268.010, which is up 6.16% 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 Onto Innovation 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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