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.
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.
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.
For the Utilities - Renewable subindustry, PT Arkora Hydro 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 Arkora Hydro Tbk Volatility vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, PT Arkora Hydro Tbk's Volatility distribution charts can be found below:
* The bar in red indicates where PT Arkora Hydro Tbk's Volatility falls into.
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 Arkora Hydro Tbk (ISX:ARKO) has a Volatility of 213.49% as of Jul. 26, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on PT Arkora Hydro Tbk and its competitors.
Is PT Arkora Hydro Tbk's Volatility too high?
PT Arkora Hydro Tbk's current Volatility is 213.49%. Overall, PT Arkora Hydro Tbk has a GF Score™ of 74/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does PT Arkora Hydro Tbk's Volatility compare to competitors?
PT Arkora Hydro Tbk's Volatility of 213.49% 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 Arkora Hydro Tbk and its competitors. PT Arkora Hydro Tbk's current Volatility is 213.49%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is PT Arkora Hydro Tbk stock overvalued right now?
Based on GuruFocus' analysis, PT Arkora Hydro Tbk (ISX:ARKO) is currently considered Significantly Overvalued. The stock's GF Value™ is Rp1,754.67, compared to a current price of Rp5,700.00 — trading 224.8% above its estimated fair value. The current Volatility is 213.49%. PT Arkora Hydro Tbk's overall GF Score™ is 74/100 with 5 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 Arkora Hydro Tbk (ISX:ARKO), the current Volatility is 213.49% as of Jul. 26, 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 Arkora Hydro Tbk (ISX:ARKO) Overvalued in 2026?
Based on GuruFocus' analysis, PT Arkora Hydro Tbk stock appears to be overvalued.
The current stock price of Rp5,700.00 is trading 224.8% above its estimated GF Value™ of Rp1,754.67.
GuruFocus considers PT Arkora Hydro Tbk to be Significantly Overvalued.
Key valuation signals for ISX:ARKO:
Volatility: 213.49%
GF Value™: Rp1,754.67 vs. price of Rp5,700.00 (224.8% above fair value)
No single metric tells the full story. See the ISX:ARKO stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
PT Arkora Hydro Tbk is dedicated to the development and operation of hydropower plants in Indonesia. The company owns and develops hydropower plant facilities that operate in a run-of-river fashion throughout Indonesia. The run-of-river hydropower plant is the type of power plant where little or no water storage is needed. The company's reportable segments are; the 7.4 MW mini hydro powerplant in Cikopo (West Java), the 10 MW mini hydro power plant in Tomasa (Sulawesi Tengah), the 10 MW minihydro electric power plant in Yaentu (Central Sulawesi), the 5.4 MW minihydro electric power plant in Kukusan (Lampung), and the 10 MW minihydro electric power plant in Tomoni (Sulawesi Selatan), and other construction services.
74GF Score
Get the complete analysis for ISX:ARKO
Volatility is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
ISX:ARKO has been successfully added to your 
