397 JSC (HSTC:BCB) Volatility: 204.76% (As of Jul. 23, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
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.

HSTC:BCB 397 JSC HSTC:BCB
23 GF Score
Price ₫2,200.00
! 1 Warning Sign
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What is 397 JSC Volatility?

397 JSC HSTC:BCB 23 Volatility is 204.76% as of Jul. 23, 2026. GuruFocus rates HSTC:BCB with a GF Score™ of 23/100. The stock has 1 warning sign investors should review.

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 (2026-07-23), 397 JSC's Volatility is 204.76%.

397 JSC  (HSTC:BCB) 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.

397 JSC Volatility Related Terms

HSTC:BCB vs : Volatility Comparison

For the Thermal Coal subindustry, 397 JSC'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.

397 JSC Volatility vs Other Energy Sources Industry

For the Other Energy Sources industry and Energy sector, 397 JSC's Volatility distribution charts can be found below:

* The bar in red indicates where 397 JSC's Volatility falls into.


HSTC:BCB
23GF Score
397 JSC HSTC:BCB
Volatility is just one metric. See GF Score™, valuation, warning signs, and more.
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397 JSC  (HSTC:BCB) 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 204.76% mean?
397 JSC (HSTC:BCB) has a Volatility of 204.76% as of Jul. 23, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on 397 JSC and its competitors.
Is 397 JSC's Volatility too high?
397 JSC's current Volatility is 204.76%. Overall, 397 JSC has a GF Score™ of 23/100, reflecting its overall financial health beyond just this single metric.
How does 397 JSC's Volatility compare to ?
397 JSC's Volatility of 204.76% can be compared against companies in the Other Energy Sources 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 an Other Energy Sources company?
A good Volatility depends on the Other Energy Sources 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 397 JSC and its competitors. 397 JSC's current Volatility is 204.76%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is 397 JSC stock overvalued right now?
397 JSC (HSTC:BCB) has a current Volatility of 204.76%. The current Volatility is 204.76%. 397 JSC's overall GF Score™ is 23/100 with 1 warning sign to review. 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 397 JSC (HSTC:BCB), the current Volatility is 204.76% as of Jul. 23, 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.

397 JSC Business Description

Comparable Companies
Address Yen Lang 1 Area, Yen Tho Ward, Quang Ninh Province, Dong Trieu, VNM
397 JSC is a coal mining company engaged in exploitation and collection of hard coal, peat and lignite.
23GF Score

Get the complete analysis for HSTC:BCB

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

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