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AmbarellaMEX:AMBAN 67 Piotroski F-Score is 5 as of Sep. 09, 2026, which is 25% above its 10-year median of 4.00. GuruFocus rates MEX:AMBAN with a GF Score™ of 67/100 and a GF Value™ of MXN1,421.93 (Modestly Undervalued). The stock has 2 warning signs investors should review. Among 1,011 Semiconductors companies, Ambarella ranks better than 56.87% on this metric.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Ambarella has an F-score of 4 indicating the company's financial situation is typical for a stable company.
The historical rank and industry rank for Ambarella's Piotroski F-Score or its related term are showing as below:
MEX:AMBAN'
s Piotroski F-Score Range Over the Past 10 Years
Min: 2 Med: 4 Max: 6
Current: 5
During the past 13 years, the highest Piotroski F-Score of Ambarella was 6. The lowest was 2. And the median was 4.
The developer of the system is Joseph D. Piotroski is relatively unknown accounting professor who shuns publicity and rarely gives interviews.
He graduated from the University of Illinois with a B.S. in accounting in 1989, received an M.B.A. from Indiana University in 1994. Five years later, in 1999, after earning a Ph.D. in accounting from the University of Michigan, he became an associate professor of accounting at the University of Chicago.
He wanted to see if he can develop a system (using a simple nine-point scoring system) that can increase the returns of a strategy of investing in low price to book (referred to in the paper as high book to market) value companies.
What he found was something that exceeded his most optimistic expectations.
Buying only those companies that scored highest (8 or 9) on his nine-point scale, or F-Score as he called it, over the 20 year period from 1976 to 1996 led to an average out-performance over the market of 13.4%.
Even more impressive were the results of a strategy of investing in the highest F-Score companies (8 or 9) and shorting companies with the lowest F-Score (0 or 1).
Over the same period from 1976 to 1996 (20 years) this strategy led to an average yearly return of 23%, substantially outperforming the average S&P 500 index return of 15.83% over the same period.
Ambarella Piotroski F-Score Related Terms
Ambarella Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Ambarella's Piotroski F-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.
MEX:AMBAN vs UCTT, IPGP, VECO: Piotroski F-Score Comparison
For the Semiconductor Equipment & Materials subindustry, Ambarella's Piotroski F-Score, along with its competitors' market caps and Piotroski F-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.
Ambarella Piotroski F-Score vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Ambarella's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Ambarella's Piotroski F-Score falls into.
* 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.
This Year (Jul26) TTM:
Last Year (Jul25) TTM:
Net Income was -280.182 + -285.136 + -316.919 + -115.877 = MXN-998 Mil. Cash Flow from Operations was 636.405 + 327.867 + -448.868 + -4.504 = MXN511 Mil. Revenue was 2011.405 + 1749.972 + 1757.863 + 1873.103 = MXN7,392 Mil. Gross Profit was 1197.844 + 1022.099 + 1026.251 + 1081.264 = MXN4,327 Mil.
Average Total Assets from the begining of this year (Jul25)
to the end of this year (Jul26) was
(13278.784 + 13944.928 + 13855.151 + 13922.462 + 13515.881) / 5 = MXN13703.4412 Mil. Total Assets at the begining of this year (Jul25) was MXN13,279 Mil. Long-Term Debt & Capital Lease Obligation was MXN180 Mil. Total Current Assets was MXN6,826 Mil. Total Current Liabilities was MXN2,397 Mil.
Net Income was -482.176 + -417.407 + -476.62 + -375.846 = MXN-1,752 Mil.
Revenue was 1655.655 + 1733.145 + 1682.353 + 1795.32 = MXN6,866 Mil. Gross Profit was 1002.532 + 1039.31 + 1009.662 + 1056.974 = MXN4,108 Mil.
Average Total Assets from the begining of last year (Jul24)
to the end of last year (Jul25) was
(12094.587 + 13436.843 + 14212.721 + 13751.556 + 13278.784) / 5 = MXN13354.8982 Mil. Total Assets at the begining of last year (Jul24) was MXN12,095 Mil. Long-Term Debt & Capital Lease Obligation was MXN31 Mil. Total Current Assets was MXN6,464 Mil. Total Current Liabilities was MXN2,367 Mil.
*Note: If the latest quarterly/semi-annual/annual total assets data is 0, then we will use previous quarterly/semi-annual/annual data for all the items in the balance sheet.
Profitability
Question 1. Return on Assets (ROA)
Net income before extraordinary items for the year divided by Total Assets at the beginning of the year.
Score 1 if positive, 0 if negative.
Ambarella's current Net Income (TTM) was -998.
==> Negative ==> Score 0.
Question 2. Cash Flow Return on Assets (CFROA)
Net cash flow from operating activities (operating cash flow) divided by Total Assets at the beginning of the year.
Ambarella's return on assets of this year was -0.07516607. Ambarella's return on assets of last year was -0.14486224.
==> This year is higher. ==> Score 1.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
Ambarella's current ratio of this year was 2.84757642. Ambarella's current ratio of last year was 2.73039945.
==> This year's current ratio is higher. ==> Score 1.
Question 7. Change in Shares in Issue
Compare the number of shares in issue this year, to the number in issue last year.
Score 0 if there is larger number of shares in issue this year, 1 otherwise.
Ambarella's number of shares in issue this year was 44.006. Ambarella's number of shares in issue last year was 42.547.
==> There is larger number of shares in issue this year. ==> Score 0.
Efficiency
Question 8. Change in Gross Margin
Compare this year's gross margin (Gross Profit divided by sales) to last year's.
Score 1 if this year's gross margin is higher, 0 if it's lower.
Ambarella's gross margin of this year was 0.58539735. Ambarella's gross margin of last year was 0.59833891.
==> Last year's gross margin is higher ==> Score 0.
Question 9. Change in asset turnover
Compare this year's asset turnover (total sales for the year divided by total assets at the beginning of the year) to last year's asset turnover ratio.
Score 1 if this year's asset turnover ratio is higher, 0 if it's lower
Ambarella's asset turnover of this year was 0.55670331. Ambarella's asset turnover of last year was 0.56773108.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
Piotroski F-Score
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Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Ambarella has an F-score of 4 indicating the company's financial situation is typical for a stable company.
Ambarella (MEX:AMBAN) has a Piotroski F-Score of 5 as of Sep. 09, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Ambarella and its competitors. This is 25% above median its historical median of 4.00. Over the past decade, Ambarella's Piotroski F-Score has ranged from 2.00 to 6.00. According to the industry distribution chart, Ambarella ranks #436 out of 1011 companies in the Semiconductors industry, placing it in the top 43.1%.
Is Ambarella's Piotroski F-Score too high?
Ambarella's current Piotroski F-Score of 5 is 25% above median its 10-year median of 4.00. Over the past 10 years, this metric has ranged from a low of 2.00 to a high of 6.00. The Semiconductors industry median Piotroski F-Score is 5.00. Ambarella's value of 5 is 0% at this industry median. Based on the distribution chart, Ambarella ranks #436 out of 1011 companies in the Semiconductors industry, which is above the industry midpoint. Overall, Ambarella has a GF Score™ of 67/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Ambarella's Piotroski F-Score compare to UCTT and IPGP?
According to the Semiconductors industry distribution chart, Ambarella ranks #436 out of 1011 companies for Piotroski F-Score. This puts Ambarella in the upper half of its industry. The industry median Piotroski F-Score is 5.00. Ambarella's value of 5 is 0% at this benchmark. Historically, Ambarella's own Piotroski F-Score has ranged from 2.00 to 6.00 over the past decade. While the company's 10-year median is 4.00 vs. the industry median of 5.00, Ambarella has consistently been at 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 Piotroski F-Score for a Semiconductors company?
The median Piotroski F-Score among Semiconductors companies is 5.00, based on 1,011 companies in the industry. Companies in the top quartile (top 25%) have a Piotroski F-Score significantly above this median, while those in the bottom quartile fall well below. However, Piotroski F-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Ambarella's current Piotroski F-Score of 5 is 0% at 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 Piotroski F-Score mean?
A high Piotroski F-Score can signal that a stock is expensive relative to its fundamentals. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Ambarella and its competitors. For the Semiconductors industry, the median Piotroski F-Score is 5.00 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Ambarella's current Piotroski F-Score is 5, which is 25% above median its own 10-year median of 4.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ambarella stock overvalued right now?
Based on GuruFocus' analysis, Ambarella (MEX:AMBAN) is currently considered Modestly Undervalued. The stock's GF Value™ is MXN1,421.93, compared to a current price of MXN1,080.00 — trading 24% below its estimated fair value. The current Piotroski F-Score is 5, which is 25% above median its 10-year median of 4.00 and 0% at the Semiconductors industry median of 5.00. Ambarella's overall GF Score™ is 67/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Piotroski F-Score calculated?
Piotroski F-Score is calculated from a company's financial statements. For Ambarella (MEX:AMBAN), the current Piotroski F-Score is 5 as of Sep. 09, 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 Ambarella (MEX:AMBAN) Overvalued in 2026?
Based on GuruFocus' analysis, Ambarella stock appears to be undervalued.
The current stock price of MXN1,080.00 is trading 24% below its estimated GF Value™ of MXN1,421.93.
GuruFocus considers Ambarella to be Modestly Undervalued.
Key valuation signals for MEX:AMBAN:
Piotroski F-Score: 5 (25% above median its 10-year median of 4.00)
GF Value™: MXN1,421.93 vs. price of MXN1,080.00 (24% below fair value)
Industry Position: 0% at the Semiconductors median (#436 of 1011)
No single metric tells the full story. See the MEX:AMBAN stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Ambarella Inc is a developer of low-power system-on-a-chip, or SoC, semiconductors and software for edge and physical artificial intelligence (AI) applications and intelligent automation. Its products are used in a wide variety of human viewing, computer vision for edge and physical AI applications, including a variety of video security cameras, automotive camera systems, fixed robots, autonomous mobile robots (AMRs), industrial applications, intelligent transportation systems, and consumer devices, such as action, drone and 360 degree cameras. The company operates as a single operating and reportable segment and derives substantially all of its revenue from development and sales of low-power AI-based processing and video and image processing SoC solutions.
67GF Score
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