Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.
Jason CoROCO:4570 +4.11%90 Piotroski F-Score is 4 as of Jul. 15, 2026, which is 20% below its 10-year median of 5.00. GuruFocus rates ROCO:4570 with a GF Score™ of 90/100 and a GF Value™ of NT$56.47 (Modestly Overvalued). The stock has 5 warning signs investors should review. Among 1,285 Vehicles & Parts companies, Jason Co ranks worse than 70.51% 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
Jason Co 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 Jason Co's Piotroski F-Score or its related term are showing as below:
ROCO:4570'
s Piotroski F-Score Range Over the Past 10 Years
Min: 3 Med: 5 Max: 9
Current: 4
During the past 9 years, the highest Piotroski F-Score of Jason Co was 9. The lowest was 3. And the median was 5.
Jason Co (ROCO:4570) Piotroski F-Score Explanation
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.
Jason Co Piotroski F-Score Related Terms
Jason Co Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for Jason Co'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.
ROCO:4570 vs ORLY, AZO: Piotroski F-Score Comparison
For the Auto Parts subindustry, Jason Co'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.
Jason Co Piotroski F-Score vs Vehicles & Parts Industry
For the Vehicles & Parts industry and Consumer Cyclical sector, Jason Co's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where Jason Co'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.
*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.
Jason Co's current Net Income (TTM) was 114.
==> Positive ==> Score 1.
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.
Jason Co's current ratio of this year was 7.22190057. Jason Co's current ratio of last year was 7.54310599.
==> Last year's current ratio is higher ==> Score 0.
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.
Jason Co's number of shares in issue this year was 44.057. Jason Co's number of shares in issue last year was 44.064.
==> There is smaller number of shares in issue this year, or the same. ==> Score 1.
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.
Jason Co's gross margin of this year was 0.39323338. Jason Co's gross margin of last year was 0.39816649.
==> 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
Jason Co's asset turnover of this year was 0.54309712. Jason Co's asset turnover of last year was 0.59021647.
==> Last year's asset turnover is higher ==> Score 0.
Evaluation
Piotroski F-Score
=
Que. 1
+
Que. 2
+
Que. 3
+
Que. 4
+
Que. 5
+
Que. 6
+
Que. 7
+
Que. 8
+
Que. 9
=
1
+
1
+
0
+
1
+
0
+
0
+
1
+
0
+
0
=
4
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
Jason Co has an F-score of 4 indicating the company's financial situation is typical for a stable company.
Jason Co (ROCO:4570) has a Piotroski F-Score of 4 as of Jul. 15, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on Jason Co and its competitors. This is 20% below median its historical median of 5.00. Over the past decade, Jason Co's Piotroski F-Score has ranged from 3.00 to 9.00. According to the industry distribution chart, Jason Co ranks #906 out of 1285 companies in the Vehicles & Parts industry, placing it in the top 70.5%.
Is Jason Co's Piotroski F-Score too high?
Jason Co's current Piotroski F-Score of 4 is 20% below median its 10-year median of 5.00. Over the past 10 years, this metric has ranged from a low of 3.00 to a high of 9.00. The Vehicles & Parts industry median Piotroski F-Score is 5.00. Jason Co's value of 4 is 20% below this industry median. Based on the distribution chart, Jason Co ranks #906 out of 1285 companies in the Vehicles & Parts industry, which is below the industry midpoint. Overall, Jason Co has a GF Score™ of 90/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Jason Co's Piotroski F-Score compare to ORLY and AZO?
According to the Vehicles & Parts industry distribution chart, Jason Co ranks #906 out of 1285 companies for Piotroski F-Score. This places Jason Co in the lower half of its industry. The industry median Piotroski F-Score is 5.00. Jason Co's value of 4 is 20% below this benchmark. Historically, Jason Co's own Piotroski F-Score has ranged from 3.00 to 9.00 over the past decade. While the company's 10-year median is 5.00 vs. the industry median of 5.00, Jason Co has consistently been below 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 Vehicles & Parts company?
The median Piotroski F-Score among Vehicles & Parts companies is 5.00, based on 1,285 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. Jason Co's current Piotroski F-Score of 4 is 20% below 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 Jason Co and its competitors. For the Vehicles & Parts 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. Jason Co's current Piotroski F-Score is 4, which is 20% below median its own 10-year median of 5.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Jason Co stock overvalued right now?
Based on GuruFocus' analysis, Jason Co (ROCO:4570) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$56.47, compared to a current price of NT$70.90 — trading 25.6% above its estimated fair value. The current Piotroski F-Score is 4, which is 20% below median its 10-year median of 5.00 and 20% below the Vehicles & Parts industry median of 5.00. Jason Co's overall GF Score™ is 90/100 with 5 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 Jason Co (ROCO:4570), the current Piotroski F-Score is 4 as of Jul. 15, 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 Jason Co (ROCO:4570) Overvalued in 2026?
Based on GuruFocus' analysis, Jason Co stock appears to be overvalued.
The current stock price of NT$70.90 is trading 25.6% above its estimated GF Value™ of NT$56.47.
GuruFocus considers Jason Co to be Modestly Overvalued.
Key valuation signals for ROCO:4570:
Piotroski F-Score: 4 (20% below median its 10-year median of 5.00)
GF Value™: NT$56.47 vs. price of NT$70.90 (25.6% above fair value)
Industry Position: 20% below the Vehicles & Parts median (#906 of 1285)
No single metric tells the full story. See the ROCO:4570 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ROCO:4570 has been successfully added to your 
