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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.
Hallador Energy Co (STU:H7H) 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.
Hallador Energy Co Volatility Related Terms
STU:H7H vs NRGV, ELLO, XIFR: Volatility Comparison
For the Utilities - Independent Power Producers subindustry, Hallador Energy 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.
Hallador Energy Co Volatility vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, Hallador Energy Co's Volatility distribution charts can be found below:
* The bar in red indicates where Hallador Energy Co's Volatility falls into.
Hallador Energy Co (STU:H7H) 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.
Hallador Energy Co (STU:H7H) has a Volatility of 40.61% as of Aug. 15, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Hallador Energy Co and its competitors.
Is Hallador Energy Co's Volatility too high?
Hallador Energy Co's current Volatility is 40.61%. Overall, Hallador Energy Co has a GF Score™ of 52/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Hallador Energy Co's Volatility compare to NRGV and ELLO?
Hallador Energy Co's Volatility of 40.61% can be compared against companies in the Utilities - Independent Power Producers 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 Utilities - Independent Power Producers company?
A good Volatility depends on the Utilities - Independent Power Producers 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 Hallador Energy Co and its competitors. Hallador Energy Co's current Volatility is 40.61%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Hallador Energy Co stock overvalued right now?
Based on GuruFocus' analysis, Hallador Energy Co (STU:H7H) is currently considered Significantly Overvalued. The stock's GF Value™ is €9.32, compared to a current price of €13.90 — trading 49.1% above its estimated fair value. The current Volatility is 40.61%. Hallador Energy Co's overall GF Score™ is 52/100 with 4 warning signs 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 Hallador Energy Co (STU:H7H), the current Volatility is 40.61% as of Aug. 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 Hallador Energy Co (STU:H7H) Overvalued in 2026?
Based on GuruFocus' analysis, Hallador Energy Co stock appears to be overvalued.
The current stock price of €13.90 is trading 49.1% above its estimated GF Value™ of €9.32.
GuruFocus considers Hallador Energy Co to be Significantly Overvalued.
Key valuation signals for STU:H7H:
Volatility: 40.61%
GF Value™: €9.32 vs. price of €13.90 (49.1% above fair value)
No single metric tells the full story. See the STU:H7H stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Hallador Energy Co is a vertically integrated, independent power producer (IPP) and fuel company with operations in Indiana. The Company operates across multiple stages of the energy value chain, from accredited capacity and energy to coal. The Company's electric operations are located within the Midcontinent Independent System Operator's (MISO) footprint. The company's business is organized based on the services and products it provide in two segments: (i) Electric Operations and (ii) Coal Operations.
52GF Score
Get the complete analysis for STU:H7H
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