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.
PT Pertamina Geothermal Energy Tbk (ISX:PGEO) 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.
PT Pertamina Geothermal Energy Tbk Volatility Related Terms
PT Pertamina Geothermal Energy Tbk Volatility Competitor Comparison
For the Utilities - Renewable subindustry, PT Pertamina Geothermal Energy Tbk'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.
PT Pertamina Geothermal Energy Tbk Volatility vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, PT Pertamina Geothermal Energy Tbk's Volatility distribution charts can be found below:
* The bar in red indicates where PT Pertamina Geothermal Energy Tbk's Volatility falls into.
PT Pertamina Geothermal Energy Tbk (ISX:PGEO) 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.
PT Pertamina Geothermal Energy Tbk (ISX:PGEO) has a Volatility of 28.60% as of Jun. 30, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on PT Pertamina Geothermal Energy Tbk and its competitors.
Is PT Pertamina Geothermal Energy Tbk's Volatility too high?
PT Pertamina Geothermal Energy Tbk's current Volatility is 28.60%. Overall, PT Pertamina Geothermal Energy Tbk has a GF Score™ of 82/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does PT Pertamina Geothermal Energy Tbk's Volatility compare to competitors?
PT Pertamina Geothermal Energy Tbk's Volatility of 28.60% 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 PT Pertamina Geothermal Energy Tbk and its competitors. PT Pertamina Geothermal Energy Tbk's current Volatility is 28.60%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is PT Pertamina Geothermal Energy Tbk stock overvalued right now?
Based on GuruFocus' analysis, PT Pertamina Geothermal Energy Tbk (ISX:PGEO) is currently considered Significantly Undervalued. The stock's GF Value™ is Rp1,360.62, compared to a current price of Rp840.00 — trading 38.3% below its estimated fair value. The current Volatility is 28.60%. PT Pertamina Geothermal Energy Tbk's overall GF Score™ is 82/100 with 2 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 PT Pertamina Geothermal Energy Tbk (ISX:PGEO), the current Volatility is 28.60% as of Jun. 30, 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 PT Pertamina Geothermal Energy Tbk (ISX:PGEO) Overvalued in 2026?
Based on GuruFocus' analysis, PT Pertamina Geothermal Energy Tbk stock appears to be undervalued.
The current stock price of Rp840.00 is trading 38.3% below its estimated GF Value™ of Rp1,360.62.
GuruFocus considers PT Pertamina Geothermal Energy Tbk to be Significantly Undervalued.
Key valuation signals for ISX:PGEO:
Volatility: 28.60%
GF Value™: Rp1,360.62 vs. price of Rp840.00 (38.3% below fair value)
No single metric tells the full story. See the ISX:PGEO stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
PT Pertamina Geothermal Energy Tbk Business Description
PT Pertamina Geothermal Energy Tbk is involved in the geothermal sector from the upstream and/or downstream sides, both at home and abroad, as well as other business activities related to or supporting activities in the geothermal sector. Its key business activities include geothermal exploration and drilling, including in forest areas, and other activities related to geothermal energy exploitation up to its place of utilization; and producing electricity through various renewable and non-renewable energy sources. The company mainly generates revenue from the production and commercialization of geothermal steam and electricity. It operates in two segments: Own operations, which generate maximum revenue, and Joint Operating Contracts with PLN.
82GF Score
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