SERNF (Seiren Co) Volatility: 7.60% (As of Jul. 31, 2026)

Author: Vera Yuan Vera Yuan
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Vera Yuan
Director of Data and Quant Analytics at GuruFocus
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.
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Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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.

SERNF Seiren Co Ltd SERNF
92 GF Score
Price $19.50
GF Value $19.86
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What is Seiren Co Volatility?

Seiren Co SERNF 92 Volatility is 7.60% as of Jul. 31, 2026. GuruFocus rates SERNF with a GF Score™ of 92/100 and a GF Value™ of $19.86.

Volatility is a statistical measure of the dispersion of returns for a given security or market index, it shows how the price swings around its mean. The volatility here is measured as the annualized standard deviation between monthly returns from the security over the past year. In most cases, the higher the volatility, the riskier the security.

As of today (2026-07-31), Seiren Co's Volatility is 7.60%.


Seiren Co  (OTCPK:SERNF) Volatility Explanation

Volatility is a statistical measure of the dispersion of returns for a given security or market index. It’s often measured as standard deviation or variance of historical returns over a certain period. The volatility here is measured as the annualized standard deviation between monthly returns from the security over the past year.

Volatility reflects the uncertainty or risk of a security’s value. Generally speaking, a higher volatility suggests a higher risk, because it implies a wider fluctuation around average price. This means the price of the security can change dramatically in either direction within a short period. Conversely, a lower volatility means that the security's price is more steady, which suggests a lower risk.

Another measurement of relative volatility is Beta. Beta is a measure of systematic risk of a security or a portfolio in comparison to the market as a whole. Beta is usually compared to 1. A beta of greater than 1 indicates that the security's price will be more volatile than the market.


Seiren Co Volatility Related Terms


Seiren Co Volatility Competitor Comparison

For the Textile Manufacturing subindustry, Seiren Co's Volatility, along with its competitors' market caps and Volatility 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 Volatility vs Manufacturing - Apparel & Accessories Industry

For the Manufacturing - Apparel & Accessories industry and Consumer Cyclical sector, Seiren Co's Volatility distribution charts can be found below:

* The bar in red indicates where Seiren Co's Volatility falls into.


SERNF
92GF Score
Seiren Co Ltd SERNF
Volatility is just one metric. See GF Score™, valuation, warning signs, and more.
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Seiren Co  (OTCPK:SERNF) Volatility Calculation

The annualized volatility is calculated as following:

σA=σM * 12
= 1/(n-1) ∑(Ri - R')^2 * 12

Where: σM is the monthly volatility, n is the number of months in the period, Ri is the security's historical monthly returns and R' is the arithmetic mean of monthly returns.

* 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.

Frequently Asked Questions Learn more about Volatility →
What does a Volatility of 7.60% mean?
Seiren Co (SERNF) has a Volatility of 7.60% as of Jul. 31, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Seiren Co and its competitors.
Is Seiren Co's Volatility too high?
Seiren Co's current Volatility is 7.60%. 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 Volatility compare to competitors?
Seiren Co's Volatility of 7.60% can be compared against companies in the Manufacturing - Apparel & Accessories industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Volatility for a Manufacturing - Apparel & Accessories company?
A good Volatility depends on the Manufacturing - Apparel & Accessories industry context. However, Volatility should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Volatility mean?
A high Volatility can signal that a stock is expensive relative to its fundamentals. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Seiren Co and its competitors. Seiren Co's current Volatility is 7.60%. 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 Volatility of 7.60%. The stock's GF Value™ is $19.86, compared to a current price of $19.50 — trading 1.8% below its estimated fair value. The current Volatility is 7.60%. 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 Volatility calculated?
Volatility is calculated from a company's financial statements. For Seiren Co (SERNF), the current Volatility is 7.60% as of Jul. 31, 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 1.8% below its estimated GF Value™ of $19.86.

Key valuation signals for SERNF:

  • Volatility: 7.60%
  • GF Value™: $19.86 vs. price of $19.50 (1.8% below fair value)
  • GF Score™: 92/100

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 Business Description

Other Exchanges 3569:Japan1AB:Germany
Address 1-10-1 Keya, Fukui-ku, Fukui, JPN, 918-8003
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

Volatility is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$19.50
Price
$19.86
GF Value