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.
Seiren CoSERNF 92 Shiller PE Ratio is 17.89 as of Sep. 15, 2026, which is 4% below its 10-year median of 18.55. GuruFocus rates SERNF with a GF Score™ of 92/100 and a GF Value™ of $20.71. Among 643 Manufacturing - Apparel & Accessories companies, Seiren Co ranks worse than 54.28% on this metric.
As of today (2026-09-15), Seiren Co's current share price is $19.50. Seiren Co's E10 for the quarter that ended in Jun. 2026 was $1.09. Seiren Co's Shiller PE Ratio for today is 17.89.
The historical rank and industry rank for Seiren Co's Shiller PE Ratio or its related term are showing as below:
SERNF'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 12.61 Med: 18.55 Max: 34.77
Current: 17.42
During the past years, Seiren Co's highest Shiller PE Ratio was 34.77. The lowest was 12.61. And the median was 18.55.
SERNF's Shiller PE Ratio is ranked worse than 54.28% of 643
companies
in the Manufacturing - Apparel & Accessories industry
Industry Median: 16.09
vs SERNF: 17.42
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Seiren Co's adjusted earnings per share data for the three months ended in Jun. 2026 was $0.434. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $1.09 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Seiren Co (OTCPK:SERNF) Shiller PE Ratio Explanation
Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.
If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.
Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.
Be Aware
Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.
Seiren Co Shiller PE Ratio Related Terms
Seiren Co Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Seiren Co's Shiller PE 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 Textile Manufacturing subindustry, Seiren Co's Shiller PE Ratio, along with its competitors' market caps and Shiller PE 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.
Seiren Co Shiller PE Ratio vs Manufacturing - Apparel & Accessories Industry
For the Manufacturing - Apparel & Accessories industry and Consumer Cyclical sector, Seiren Co's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Seiren Co's Shiller PE Ratio falls into.
For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.
The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.
Seiren Co's Shiller PE Ratio for today is calculated as
* 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.
Seiren Co's E10 for the quarter that ended in Jun. 2026 is calculated as:
For example, Seiren Co's adjusted earnings per share data for the three months ended in Jun. 2026 was:
Add all the adjusted EPS together and divide 10 will get our E10.
Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.
Seiren Co (SERNF) has a Shiller PE Ratio of 17.89 as of Sep. 15, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Seiren Co and its competitors. This is near median its historical median of 18.55. Over the past decade, Seiren Co's Shiller PE Ratio has ranged from 12.61 to 34.77. According to the industry distribution chart, Seiren Co ranks #349 out of 643 companies in the Manufacturing - Apparel & Accessories industry, placing it in the top 54.3%.
Is Seiren Co's Shiller PE Ratio too high?
Seiren Co's current Shiller PE Ratio of 17.89 is near median its 10-year median of 18.55. Over the past 10 years, this metric has ranged from a low of 12.61 to a high of 34.77. The Manufacturing - Apparel & Accessories industry median Shiller PE Ratio is 16.09. Seiren Co's value of 17.89 is 11.2% above this industry median. Based on the distribution chart, Seiren Co ranks #349 out of 643 companies in the Manufacturing - Apparel & Accessories industry, which is below the industry midpoint. Overall, Seiren Co has a GF Score™ of 92/100, reflecting its overall financial health beyond just this single metric.
How does Seiren Co's Shiller PE Ratio compare to competitors?
According to the Manufacturing - Apparel & Accessories industry distribution chart, Seiren Co ranks #349 out of 643 companies for Shiller PE Ratio. This places Seiren Co in the lower half of its industry. The industry median Shiller PE Ratio is 16.09. Seiren Co's value of 17.89 is 11.2% above this benchmark. Historically, Seiren Co's own Shiller PE Ratio has ranged from 12.61 to 34.77 over the past decade. While the company's 10-year median is 18.55 vs. the industry median of 16.09, Seiren Co 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 Shiller PE Ratio for a Manufacturing - Apparel & Accessories company?
The median Shiller PE Ratio among Manufacturing - Apparel & Accessories companies is 16.09, based on 643 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Seiren Co's current Shiller PE Ratio of 17.89 is 11.2% 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 Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Seiren Co and its competitors. For the Manufacturing - Apparel & Accessories industry, the median Shiller PE Ratio is 16.09 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Seiren Co's current Shiller PE Ratio is 17.89, which is near median its own 10-year median of 18.55. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Seiren Co stock overvalued right now?
Seiren Co (SERNF) has a current Shiller PE Ratio of 17.89. The stock's GF Value™ is $20.71, compared to a current price of $19.50 — trading 5.8% below its estimated fair value. The current Shiller PE Ratio is 17.89, which is near median its 10-year median of 18.55 and 11.2% above the Manufacturing - Apparel & Accessories industry median of 16.09. Seiren Co's overall GF Score™ is 92/100. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Seiren Co (SERNF), the current Shiller PE Ratio is 17.89 as of Sep. 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 Seiren Co (SERNF) Overvalued in 2026?
Based on GuruFocus' analysis, Seiren Co stock appears to be undervalued.
The current stock price of $19.50 is trading 5.8% below its estimated GF Value™ of $20.71.
Key valuation signals for SERNF:
Shiller PE Ratio: 17.89 (near median its 10-year median of 18.55)
GF Value™: $20.71 vs. price of $19.50 (5.8% below fair value)
Industry Position: 11.2% above the Manufacturing - Apparel & Accessories median (#349 of 643)
No single metric tells the full story. See the SERNF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Seiren Co Ltd is a Japan-based fiber manufacturing company. It is a dyeing processor of filament fibers. The company also produces silk, synthetic fibers and textile products used in household interior and apparel. It manufactures industrial materials including automobile interiors such as seats and air bags. The company's segment includes Automotive Interior, High Fashion, Electronics, Environment and Life Materials, Medical and Other. The company generates the majority of its revenue from the Automotive Interior segment.
92GF Score
Get the complete analysis for SERNF
Shiller PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
SERNF has been successfully added to your 
