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.
The Altman Z-Score is a model designed to predict the likelihood of a company going bankrupt within the next two years. Created by American finance professor Edward Altman in 1968, the model is specifically designed for publicly traded manufacturing companies with assets greater than $1 million.
Warning Sign:
Altman Z-score of 1.73 is in distress zone. This implies bankruptcy possibility in the next two years.
Petrovietnam Drilling & Well Service has a Altman Z-Score of 1.73, indicating it is in Distress Zones. This implies bankrupcy possibility in the next two years.
The zones of discrimination were as such:
When Altman Z-Score <= 1.8, it is in Distress Zones.
When Altman Z-Score >= 3, it is in Safe Zones.
When Altman Z-Score is between 1.8 and 3, it is in Grey Zones.
Petrovietnam Drilling & Well Service (STC:PVD) Altman Z-Score Explanation
X1: The Working Capital/Total Assets (WC/TA) ratio is a measure of the net liquid assets of the firm relative to the total capitalization. Working capital is defined as the difference between current assets and current liabilities. Ordinarily, a firm experiencing consistent operating losses will have shrinking current assets in relation to total assets. Altman found this one proved to be the most valuable liquidity ratio comparing with the current ratio and the quick ratio. This is however the least significant of the five factors.
X2: Retained Earnings/Total Assets: the RE/TA ratio measures the leverage of a firm. Retained earnings is the account which reports the total amount of reinvested earnings and/or losses of a firm over its entire life. Those firms with high RE, relative to TA, have financed their assets through retention of profits and have not utilized as much debt.
X3, Earnings Before Interest and Taxes/Total Assets (EBIT/TA): This ratio is a measure of the true productivity of the firm's assets, independent of any tax or leverage factors. Since a firm's ultimate existence is based on the earning power of its assets, this ratio appears to be particularly appropriate for studies dealing with corporate failure. This ratio continually outperforms other profitability measures, including cash flow.
X4, Market Value of Equity/Book Value of Total Liabilities (MVE/TL): The measure shows how much the firm's assets can decline in value (measured by market value of equity plus debt) before the liabilities exceed the assets and the firm becomes insolvent.
X5, Revenue/Total Assets (S/TA): The capital-turnover ratio is a standard financial ratio illustrating the sales generating ability of the firm's assets.
* 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 Altman Z-Score Chart
STC:PVD vs NE, RIG, VAL: Altman Z-Score Comparison
For the Oil & Gas Drilling subindustry, Petrovietnam Drilling & Well Service's Altman Z-Score, along with its competitors' market caps and Altman Z-Score 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 Altman Z-Score vs Oil & Gas Industry
Petrovietnam Drilling & Well Service Altman Z-Score Calculation
Altman Z-Score model is an accurate forecaster of failure up to two years prior to distress. It can be considered the assessment of the distress of industrial corporations.
* 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. GuruFocus does not calculate Altman Z-Score when X4 or X5 value is 0.
Petrovietnam Drilling & Well Service (STC:PVD) has a Altman Z-Score of 1.73 as of Jul. 14, 2026. The Altman Z-score measures a company's bankruptcy risk. View historical data on Petrovietnam Drilling & Well Service and its competitors. This is 25% above median its historical median of 1.38. Over the past decade, Petrovietnam Drilling & Well Service's Altman Z-Score has ranged from 0.89 to 2.21. According to the industry distribution chart, Petrovietnam Drilling & Well Service ranks #479 out of 896 companies in the Oil & Gas industry, placing it in the top 53.5%.
Is Petrovietnam Drilling & Well Service's Altman Z-Score too high?
Petrovietnam Drilling & Well Service's current Altman Z-Score of 1.73 is 25% above median its 10-year median of 1.38. Over the past 10 years, this metric has ranged from a low of 0.89 to a high of 2.21. The Oil & Gas industry median Altman Z-Score is 1.92. Petrovietnam Drilling & Well Service's value of 1.73 is 9.7% below this industry median. Based on the distribution chart, Petrovietnam Drilling & Well Service ranks #479 out of 896 companies in the Oil & Gas industry, which is below the industry midpoint. Overall, Petrovietnam Drilling & Well Service has a GF Score™ of 94/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Petrovietnam Drilling & Well Service's Altman Z-Score compare to NE and RIG?
According to the Oil & Gas industry distribution chart, Petrovietnam Drilling & Well Service ranks #479 out of 896 companies for Altman Z-Score. This places Petrovietnam Drilling & Well Service in the lower half of its industry. The industry median Altman Z-Score is 1.92. Petrovietnam Drilling & Well Service's value of 1.73 is 9.7% below this benchmark. Historically, Petrovietnam Drilling & Well Service's own Altman Z-Score has ranged from 0.89 to 2.21 over the past decade. While the company's 10-year median is 1.38 vs. the industry median of 1.92, Petrovietnam Drilling & Well Service has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Altman Z-Score for an Oil & Gas company?
The median Altman Z-Score among Oil & Gas companies is 1.92, based on 896 companies in the industry. Companies in the top quartile (top 25%) have a Altman Z-Score significantly above this median, while those in the bottom quartile fall well below. However, Altman Z-Score should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Petrovietnam Drilling & Well Service's current Altman Z-Score of 1.73 is 9.7% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Altman Z-Score mean?
A high Altman Z-Score can signal that a stock is expensive relative to its fundamentals. The Altman Z-score measures a company's bankruptcy risk. View historical data on Petrovietnam Drilling & Well Service and its competitors. For the Oil & Gas industry, the median Altman Z-Score is 1.92 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Petrovietnam Drilling & Well Service's current Altman Z-Score is 1.73, which is 25% above median its own 10-year median of 1.38. 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 ₫28,837.91, compared to a current price of ₫18,603.95 — trading 35.5% below its estimated fair value. The current Altman Z-Score is 1.73, which is 25% above median its 10-year median of 1.38 and 9.7% below the Oil & Gas industry median of 1.92. Petrovietnam Drilling & Well Service's overall GF Score™ is 94/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Altman Z-Score calculated?
Altman Z-Score is calculated from a company's financial statements. For Petrovietnam Drilling & Well Service (STC:PVD), the current Altman Z-Score is 1.73 as of Jul. 14, 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 ₫18,603.95 is trading 35.5% below its estimated GF Value™ of ₫28,837.91.
GuruFocus considers Petrovietnam Drilling & Well Service to be Possible Value Trap.
Key valuation signals for STC:PVD:
Altman Z-Score: 1.73 (25% above median its 10-year median of 1.38)
GF Value™: ₫28,837.91 vs. price of ₫18,603.95 (35.5% below fair value)
Industry Position: 9.7% below the Oil & Gas median (#479 of 896)
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.
94GF Score
Get the complete analysis for STC:PVD
Altman Z-Score 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 
