Onto InnovationONTO +6.15%85 Altman Z-Score is 40.26 as of Jun. 25, 2026, which is 242% above its 10-year median of 11.77. 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 1,015 Semiconductors companies, Onto Innovation ranks better than 90.64% on this metric.
The Altman Z-Score is a model designed to predict the likelihood of a company going bankrupt within the next two years. Created by American finance professor Edward Altman in 1968, the model is specifically designed for publicly traded manufacturing companies with assets greater than $1 million.
Good Sign:
Altman Z-score of 38.02 is strong.
Onto Innovation has a Altman Z-Score of 40.26, indicating it is in Safe Zones. This implies the Altman Z-Score is strong.
The zones of discrimination were as such:
When Altman Z-Score <= 1.8, it is in Distress Zones.
When Altman Z-Score >= 3, it is in Safe Zones.
When Altman Z-Score is between 1.8 and 3, it is in Grey Zones.
The historical rank and industry rank for Onto Innovation's Altman Z-Score or its related term are showing as below:
ONTO'
s Altman Z-Score Range Over the Past 10 Years
Min: 4.57 Med: 11.77 Max: 39.3
Current: 38.02
During the past 13 years, Onto Innovation's highest Altman Z-Score was 39.30. The lowest was 4.57. And the median was 11.77.
X1: The Working Capital/Total Assets (WC/TA) ratio is a measure of the net liquid assets of the firm relative to the total capitalization. Working capital is defined as the difference between current assets and current liabilities. Ordinarily, a firm experiencing consistent operating losses will have shrinking current assets in relation to total assets. Altman found this one proved to be the most valuable liquidity ratio comparing with the current ratio and the quick ratio. This is however the least significant of the five factors.
X2: Retained Earnings/Total Assets: the RE/TA ratio measures the leverage of a firm. Retained earnings is the account which reports the total amount of reinvested earnings and/or losses of a firm over its entire life. Those firms with high RE, relative to TA, have financed their assets through retention of profits and have not utilized as much debt.
X3, Earnings Before Interest and Taxes/Total Assets (EBIT/TA): This ratio is a measure of the true productivity of the firm's assets, independent of any tax or leverage factors. Since a firm's ultimate existence is based on the earning power of its assets, this ratio appears to be particularly appropriate for studies dealing with corporate failure. This ratio continually outperforms other profitability measures, including cash flow.
X4, Market Value of Equity/Book Value of Total Liabilities (MVE/TL): The measure shows how much the firm's assets can decline in value (measured by market value of equity plus debt) before the liabilities exceed the assets and the firm becomes insolvent.
X5, Revenue/Total Assets (S/TA): The capital-turnover ratio is a standard financial ratio illustrating the sales generating ability of the firm's assets.
Altman Z-Score does not apply to financial companies.
Onto Innovation Altman Z-Score Related Terms
Onto Innovation Altman Z-Score Historical Data
* Premium members only.
The historical data trend for Onto Innovation's Altman Z-Score 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.
ONTO vs NVMI, FORM, AMKR: Altman Z-Score Comparison
For the Semiconductor Equipment & Materials subindustry, Onto Innovation's Altman Z-Score, along with its competitors' market caps and Altman Z-Score 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 Altman Z-Score vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Onto Innovation's Altman Z-Score distribution charts can be found below:
* The bar in red indicates where Onto Innovation's Altman Z-Score falls into.
Altman Z-Score model is an accurate forecaster of failure up to two years prior to distress. It can be considered the assessment of the distress of industrial corporations.
Onto Innovation's Altman Z-Score for today is calculated with this formula:
Z
=
1.2
*
X1
+
1.4
*
X2
+
3.3
*
X3
+
0.6
*
X4
+
1.0
*
X5
=
1.2
*
0.4612
+
1.4
*
0.3245
+
3.3
*
0.054
+
0.6
*
64.4103
+
1.0
*
0.4301
=
40.26
* 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. GuruFocus does not calculate Altman Z-Score when X4 or X5 value is 0.
Onto Innovation (ONTO) has a Altman Z-Score of 40.26 as of Jun. 25, 2026. The Altman Z-score measures a company's bankruptcy risk. View historical data on Onto Innovation and its competitors. This is 242% above median its historical median of 11.77. Over the past decade, Onto Innovation's Altman Z-Score has ranged from 4.57 to 39.30. According to the industry distribution chart, Onto Innovation ranks #95 out of 1015 companies in the Semiconductors industry, placing it in the top 9.4%.
Is Onto Innovation's Altman Z-Score too high?
Onto Innovation's current Altman Z-Score of 40.26 is 242% above median its 10-year median of 11.77. Over the past 10 years, this metric has ranged from a low of 4.57 to a high of 39.30. The Semiconductors industry median Altman Z-Score is 5.52. Onto Innovation's value of 40.26 is 629.3% above this industry median. Based on the distribution chart, Onto Innovation ranks #95 out of 1015 companies in the Semiconductors industry, which is in the top quartile — a strong position relative to peers. 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 Altman Z-Score compare to NVMI and FORM?
According to the Semiconductors industry distribution chart, Onto Innovation ranks #95 out of 1015 companies for Altman Z-Score. This places Onto Innovation in the top 9% of its industry — outperforming the majority of peers. The industry median Altman Z-Score is 5.52. Onto Innovation's value of 40.26 is 629.3% above this benchmark. Historically, Onto Innovation's own Altman Z-Score has ranged from 4.57 to 39.30 over the past decade. While the company's 10-year median is 11.77 vs. the industry median of 5.52, 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 Altman Z-Score for a Semiconductors company?
The median Altman Z-Score among Semiconductors companies is 5.52, based on 1,015 companies in the industry. Companies in the top quartile (top 25%) have a Altman Z-Score significantly above this median, while those in the bottom quartile fall well below. However, Altman Z-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Onto Innovation's current Altman Z-Score of 40.26 is 629.3% 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 Altman Z-Score mean?
A high Altman Z-Score can signal that a stock is expensive relative to its fundamentals. The Altman Z-score measures a company's bankruptcy risk. View historical data on Onto Innovation and its competitors. For the Semiconductors industry, the median Altman Z-Score is 5.52 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Onto Innovation's current Altman Z-Score is 40.26, which is 242% above median its own 10-year median of 11.77. 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 $342.07 — trading 80.7% above its estimated fair value. The current Altman Z-Score is 40.26, which is 242% above median its 10-year median of 11.77 and 629.3% above the Semiconductors industry median of 5.52. 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 Altman Z-Score calculated?
Altman Z-Score is calculated from a company's financial statements. For Onto Innovation (ONTO), the current Altman Z-Score is 40.26 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 $342.07 is trading 80.7% above its estimated GF Value™ of $189.26.
GuruFocus considers Onto Innovation to be Significantly Overvalued.
Key valuation signals for ONTO:
Altman Z-Score: 40.26 (242% above median its 10-year median of 11.77)
GF Value™: $189.26 vs. price of $342.07 (80.7% above fair value)
Industry Position: 629.3% above the Semiconductors median (#95 of 1015)
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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