Onto InnovationONTO +6.62%85 PB Ratio is 8.02 as of Jun. 25, 2026, which is 200% above its 10-year median of 2.67. GuruFocus rates ONTO with a GF Score™ of 85/100 and a GF Value™ of $189.26 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 1,000 Semiconductors companies, Onto Innovation ranks worse than 75% on this metric.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-06-25), Onto Innovation's share price is $343.56. Onto Innovation's Book Value per Share for the quarter that ended in Mar. 2026 was $42.86. Hence, Onto Innovation's PB Ratio of today is 8.02.
Warning Sign:
Onto Innovation Inc stock PB Ratio (=7.52) is close to 10-year high of 7.79.
The historical rank and industry rank for Onto Innovation's PB Ratio or its related term are showing as below:
ONTO'
s PB Ratio Range Over the Past 10 Years
Min: 0.85 Med: 2.67 Max: 8.22
Current: 8.02
During the past 13 years, Onto Innovation's highest PB Ratio was 8.22. The lowest was 0.85. And the median was 2.67.
ONTO's PB Ratio is ranked worse than 75% of 1000
companies
in the Semiconductors industry
Industry Median: 3.82
vs ONTO: 8.02
During the past 12 months, Onto Innovation's average Book Value Per Share Growth Rate was 9.00% per year.
During the past 3 years, the average Book Value Per Share Growth Rate was 8.80% per year.
During the past 5 years, the average Book Value Per Share Growth Rate was 10.30% per year.
During the past 10 years, the average Book Value Per Share Growth Rate was 16.10% per year.
During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Onto Innovation was 31.00% per year. The lowest was -28.90% per year. And the median was 9.70% per year.
The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.
Be Aware
Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.
Onto Innovation PB Ratio Related Terms
Onto Innovation PB Ratio Historical Data
* Premium members only.
The historical data trend for Onto Innovation's PB Ratio can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Semiconductor Equipment & Materials subindustry, Onto Innovation's PB Ratio, along with its competitors' market caps and PB Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Onto Innovation PB Ratio vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Onto Innovation's PB Ratio distribution charts can be found below:
* The bar in red indicates where Onto Innovation's PB Ratio falls into.
The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.
Onto Innovation's PB Ratio for today is calculated as follows:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
It can also be calculated from the numbers for the whole company:
A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.
Onto Innovation (ONTO) has a PB Ratio of 8.02 as of Jun. 25, 2026. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Onto Innovation and its competitors. This is 200% above median its historical median of 2.67. Over the past decade, Onto Innovation's PB Ratio has ranged from 0.85 to 8.22. According to the industry distribution chart, Onto Innovation ranks #750 out of 1000 companies in the Semiconductors industry, placing it in the top 75%.
Is Onto Innovation's PB Ratio too high?
Onto Innovation's current PB Ratio of 8.02 is 200% above median its 10-year median of 2.67. Over the past 10 years, this metric has ranged from a low of 0.85 to a high of 8.22. The Semiconductors industry median PB Ratio is 3.82. Onto Innovation's value of 8.02 is 109.9% above this industry median. Based on the distribution chart, Onto Innovation ranks #750 out of 1000 companies in the Semiconductors industry, which is below the industry midpoint. Overall, Onto Innovation has a GF Score™ of 85/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Onto Innovation's PB Ratio compare to NVMI and FORM?
According to the Semiconductors industry distribution chart, Onto Innovation ranks #750 out of 1000 companies for PB Ratio. This places Onto Innovation in the lower half of its industry. The industry median PB Ratio is 3.82. Onto Innovation's value of 8.02 is 109.9% above this benchmark. Historically, Onto Innovation's own PB Ratio has ranged from 0.85 to 8.22 over the past decade. While the company's 10-year median is 2.67 vs. the industry median of 3.82, Onto Innovation has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good PB Ratio for a Semiconductors company?
The median PB Ratio among Semiconductors companies is 3.82, based on 1,000 companies in the industry. Companies in the top quartile (top 25%) have a PB Ratio significantly above this median, while those in the bottom quartile fall well below. However, PB Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Onto Innovation's current PB Ratio of 8.02 is 109.9% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high PB Ratio mean?
A high PB Ratio can signal that a stock is expensive relative to its fundamentals. Price-to-Book ratio is the ratio of share price to a company's book value per share. View historical data on Onto Innovation and its competitors. For the Semiconductors industry, the median PB Ratio is 3.82 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Onto Innovation's current PB Ratio is 8.02, which is 200% above median its own 10-year median of 2.67. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Onto Innovation stock overvalued right now?
Based on GuruFocus' analysis, Onto Innovation (ONTO) is currently considered Significantly Overvalued. The stock's GF Value™ is $189.26, compared to a current price of $343.56 — trading 81.5% above its estimated fair value. The current PB Ratio is 8.02, which is 200% above median its 10-year median of 2.67 and 109.9% above the Semiconductors industry median of 3.82. Onto Innovation's overall GF Score™ is 85/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is PB Ratio calculated?
PB Ratio is calculated from a company's financial statements. For Onto Innovation (ONTO), the current PB Ratio is 8.02 as of Jun. 25, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Onto Innovation (ONTO) Overvalued in 2026?
Based on GuruFocus' analysis, Onto Innovation stock appears to be overvalued.
The current stock price of $343.56 is trading 81.5% above its estimated GF Value™ of $189.26.
GuruFocus considers Onto Innovation to be Significantly Overvalued.
Key valuation signals for ONTO:
PB Ratio: 8.02 (200% above median its 10-year median of 2.67)
GF Value™: $189.26 vs. price of $343.56 (81.5% above fair value)
Industry Position: 109.9% above the Semiconductors median (#750 of 1000)
No single metric tells the full story. See the ONTO stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Onto Innovation Inc is engaged in the design, development, manufacture, and support of high-performance control metrology, defect inspection, lithography, and data analysis systems used by microelectronics device manufacturers. The Company and its subsidiaries currently operate in a single operating segment. The company mainly operates in the United States, Southeast Asia, China, Japan, and Europe, with Taiwan and South Korea the sources of total revenue.
85GF Score
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