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3S Silicon TechROCO:5297 -0.71%68 Piotroski F-Score is 3 as of Jul. 26, 2026, which is 50% below its 10-year median of 6.00. GuruFocus rates ROCO:5297 with a GF Score™ of 68/100 and a GF Value™ of NT$26.90 (Significantly Overvalued). The stock has 5 warning signs investors should review. Among 989 Semiconductors companies, 3S Silicon Tech ranks worse than 78.56% on this metric.
Warning Sign:
Piotroski F-Score of 3 is low, which usually implies poor business operation.
The zones of discrimination were as such:
Good or high score = 7, 8, 9
Bad or low score = 0, 1, 2, 3
3S Silicon Tech has an F-score of 3. It is a bad or low score, which usually implies poor business operation.
The historical rank and industry rank for 3S Silicon Tech's Piotroski F-Score or its related term are showing as below:
ROCO:5297'
s Piotroski F-Score Range Over the Past 10 Years
Min: 3 Med: 6 Max: 7
Current: 3
During the past 13 years, the highest Piotroski F-Score of 3S Silicon Tech was 7. The lowest was 3. And the median was 6.
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.
3S Silicon Tech Piotroski F-Score Related Terms
3S Silicon Tech Piotroski F-Score Historical Data
* Premium members only.
The historical data trend for 3S Silicon Tech'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:5297 vs NVDA, AVGO, MU: Piotroski F-Score Comparison
For the Semiconductors subindustry, 3S Silicon Tech'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.
3S Silicon Tech Piotroski F-Score vs Semiconductors Industry
For the Semiconductors industry and Technology sector, 3S Silicon Tech's Piotroski F-Score distribution charts can be found below:
* The bar in red indicates where 3S Silicon Tech'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.
3S Silicon Tech's current Net Income (TTM) was 15.4.
==> 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.
3S Silicon Tech's return on assets of this year was 0.02312249. 3S Silicon Tech's return on assets of last year was 0.06803011.
==> Last year is higher ==> Score 0.
Question 4. Quality of Earnings (Accrual)
Compare Cash flow return on assets (2) to return on assets (1)
3S Silicon Tech's gearing of this year was 0.01119565. 3S Silicon Tech's gearing of last year was 0.01304084.
==> This year is lower or equal to last year. ==> Score 1.
Question 6. Change in Working Capital (Liquidity)
Compare this year's current ratio (current assets divided by current liabilities) to last year's current ratio.
Score 1 if this year's current ratio is higher, 0 if it's lower
3S Silicon Tech's current ratio of this year was 2.86661873. 3S Silicon Tech's current ratio of last year was 3.2879664.
==> 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.
3S Silicon Tech's number of shares in issue this year was 37.272. 3S Silicon Tech's number of shares in issue last year was 37.385.
==> 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.
3S Silicon Tech's gross margin of this year was 0.46266409. 3S Silicon Tech's gross margin of last year was 0.52605012.
==> 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
3S Silicon Tech's asset turnover of this year was 0.50702333. 3S Silicon Tech's asset turnover of last year was 0.51809534.
==> 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
3S Silicon Tech has an F-score of 3. It is a bad or low score, which usually implies poor business operation.
3S Silicon Tech (ROCO:5297) has a Piotroski F-Score of 3 as of Jul. 26, 2026. The Piotroski F-score grades a company's business operating strength from 0-9. View historical data on 3S Silicon Tech and its competitors. This is 50% below median its historical median of 6.00. Over the past decade, 3S Silicon Tech's Piotroski F-Score has ranged from 3.00 to 7.00. According to the industry distribution chart, 3S Silicon Tech ranks #777 out of 989 companies in the Semiconductors industry, placing it in the top 78.6%.
Is 3S Silicon Tech's Piotroski F-Score too high?
3S Silicon Tech's current Piotroski F-Score of 3 is 50% below median its 10-year median of 6.00. Over the past 10 years, this metric has ranged from a low of 3.00 to a high of 7.00. The Semiconductors industry median Piotroski F-Score is 5.00. 3S Silicon Tech's value of 3 is 40% below this industry median. Based on the distribution chart, 3S Silicon Tech ranks #777 out of 989 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, 3S Silicon Tech has a GF Score™ of 68/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does 3S Silicon Tech's Piotroski F-Score compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, 3S Silicon Tech ranks #777 out of 989 companies for Piotroski F-Score. This places 3S Silicon Tech in the lower half of its industry. The industry median Piotroski F-Score is 5.00. 3S Silicon Tech's value of 3 is 40% below this benchmark. Historically, 3S Silicon Tech's own Piotroski F-Score has ranged from 3.00 to 7.00 over the past decade. While the company's 10-year median is 6.00 vs. the industry median of 5.00, 3S Silicon Tech 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 Semiconductors company?
The median Piotroski F-Score among Semiconductors companies is 5.00, based on 989 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. 3S Silicon Tech's current Piotroski F-Score of 3 is 40% 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 3S Silicon Tech 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. 3S Silicon Tech's current Piotroski F-Score is 3, which is 50% below median its own 10-year median of 6.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is 3S Silicon Tech stock overvalued right now?
Based on GuruFocus' analysis, 3S Silicon Tech (ROCO:5297) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$26.90, compared to a current price of NT$69.50 — trading 158.4% above its estimated fair value. The current Piotroski F-Score is 3, which is 50% below median its 10-year median of 6.00 and 40% below the Semiconductors industry median of 5.00. 3S Silicon Tech's overall GF Score™ is 68/100 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 3S Silicon Tech (ROCO:5297), the current Piotroski F-Score is 3 as of Jul. 26, 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 3S Silicon Tech (ROCO:5297) Overvalued in 2026?
Based on GuruFocus' analysis, 3S Silicon Tech stock appears to be overvalued.
The current stock price of NT$69.50 is trading 158.4% above its estimated GF Value™ of NT$26.90.
GuruFocus considers 3S Silicon Tech to be Significantly Overvalued.
Key valuation signals for ROCO:5297:
Piotroski F-Score: 3 (50% below median its 10-year median of 6.00)
GF Value™: NT$26.90 vs. price of NT$69.50 (158.4% above fair value)
Industry Position: 40% below the Semiconductors median (#777 of 989)
No single metric tells the full story. See the ROCO:5297 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
3S Silicon Tech Inc. is a Taiwan-based company that offers die bonding for discrete power devices. Its products include clip-die bonders for power devices, snap ovens, customized equipment, and an open lab platform. 3S also provides intelligent automatic assembly machine systems, focusing on the packaging technology of discrete power semiconductors, supported by solutions and services. The company's systems include die-attach machines, stencil printers, copper strip die bonders, vacuum reflow ovens, and formic acid vacuum reflow ovens.
68GF Score
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Piotroski F-Score is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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