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.
Petrovietnam Drilling & Well Service (STC:PVD) 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.
Petrovietnam Drilling & Well Service Volatility Related Terms
STC:PVD vs NE, RIG, VAL: Volatility Comparison
For the Oil & Gas Drilling subindustry, Petrovietnam Drilling & Well Service'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.
Petrovietnam Drilling & Well Service Volatility vs Oil & Gas Industry
Petrovietnam Drilling & Well Service (STC:PVD) 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.
Petrovietnam Drilling & Well Service (STC:PVD) has a Volatility of 45.58% as of Jun. 25, 2026. Volatility is measured as the annualized standard deviation between monthly returns from the security over the past year. View historical data on Petrovietnam Drilling & Well Service and its competitors.
Is Petrovietnam Drilling & Well Service's Volatility too high?
Petrovietnam Drilling & Well Service's current Volatility is 45.58%. Overall, Petrovietnam Drilling & Well Service has a GF Score™ of 89/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Petrovietnam Drilling & Well Service's Volatility compare to NE and RIG?
Petrovietnam Drilling & Well Service's Volatility of 45.58% can be compared against companies in the Oil & Gas 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 Oil & Gas company?
A good Volatility depends on the Oil & Gas 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 Petrovietnam Drilling & Well Service and its competitors. Petrovietnam Drilling & Well Service's current Volatility is 45.58%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Petrovietnam Drilling & Well Service stock overvalued right now?
Based on GuruFocus' analysis, Petrovietnam Drilling & Well Service (STC:PVD) is currently considered Possible Value Trap. The stock's GF Value™ is ₫47,393.82, compared to a current price of ₫31,950.00 — trading 32.6% below its estimated fair value. The current Volatility is 45.58%. Petrovietnam Drilling & Well Service's overall GF Score™ is 89/100 with 3 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 Petrovietnam Drilling & Well Service (STC:PVD), the current Volatility is 45.58% as of Jun. 25, 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 Petrovietnam Drilling & Well Service (STC:PVD) Overvalued in 2026?
Based on GuruFocus' analysis, Petrovietnam Drilling & Well Service stock appears to be undervalued.
The current stock price of ₫31,950.00 is trading 32.6% below its estimated GF Value™ of ₫47,393.82.
GuruFocus considers Petrovietnam Drilling & Well Service to be Possible Value Trap.
Key valuation signals for STC:PVD:
Volatility: 45.58%
GF Value™: ₫47,393.82 vs. price of ₫31,950.00 (32.6% below fair value)
No single metric tells the full story. See the STC:PVD stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Petrovietnam Drilling & Well Service Business Description
Petrovietnam Drilling & Well Service Corp is a provider of drilling rigs and technical services for the exploration and exploitation of oil and gas industry locally and internationally. The company operates through three segments namely Drilling services, Trading, and Other services. Its Drilling services segment offers drilling rigs and drilling services. The Trading segment produces material and equipment for drilling-related activities. Its Other services segment is involved in administering well services, wireline logging, oil spill control service, drilling manpower supply service, investment-management project consulting service, management consulting service and other related services. Geographically it operates in Vietnam, Malaysia, Myanmar, Algeria.
89GF Score
Get the complete analysis for STC:PVD
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
STC:PVD has been successfully added to your 