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.
Diamond Building Products PCL's Operating Income for the
three
months ended in Mar. 2026 was ฿175 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was ฿421 Mil.
Operating Income or EBIT is linked to Return on Capital for both regular definition and Joel Greenblatt's definition.
Diamond Building Products PCL's annualizedROC % for the quarter that ended in Mar. 2026 was 16.87%.
Diamond Building Products PCL's annualizedROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was 21.32%.
* 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.
4. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Operating Income growth rate using Operating Income per share data.
Be Aware
Compared with a company's EBITDA margin, Operating Margin can be manipulated by adjusting the rate of depreciation, depletion and amortization (DDA).
If a company is facing competition, its Operating Margin may decline. Often the Operating Margin declines well before the company's revenue or even profit decline. Therefore, Operating Margin is a very important indicator of whether the company is facing problems.
For instance, by 2012, Nokia (NOK)'s problems were well known and its stock had lost more than 90% of its market value since 2007. But Nokia's Operating Margin had already been in decline since 2002, although its earnings per share were still rising. Investors who paid attention to Operating Margin would have avoided this huge loss. The same can be said for Research-in-Motion (RIMM).
Therefore, Operating Margin is a very important screening filter for GuruFocus. GuruFocus's Buffett-Munger screener requires that the profit margin is either consistent or expanding. The Model Portfolio of the Buffett-Munger screener has outperformed the market every year since inception in 2009.
Diamond Building Products PCL Operating Income Related Terms
Diamond Building Products PCL Operating Income Historical Data
* 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.
Diamond Building Products PCL Operating Income Chart
Diamond Building Products PCL Operating Income Calculation
Operating Income, is the profit a company earned through operations. All expenses, including cash expenses such as cost of goods sold (COGS), research & development, wages, and non-cash expenses, such as depreciation, depletion and amortization, have been deducted from the sales.
Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 adds up the quarterly data reported by the company within the most recent 12 months, which was ฿421 Mil.
* 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.
Diamond Building Products PCL (BKK:DRT) has a Operating Income of ฿421 Mil as of Mar. 2026. Operating Income equals sales less all operating expenses. It is linked to EBIT. View historical data on Diamond Building Products PCL and its competitors.
Is Diamond Building Products PCL's Operating Income too high?
Diamond Building Products PCL's current Operating Income is ฿421 Mil. Overall, Diamond Building Products PCL has a GF Score™ of 73/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Diamond Building Products PCL's Operating Income compare to TT and JCI?
Diamond Building Products PCL's Operating Income of ฿421 Mil can be compared against companies in the Construction industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Operating Income for a Construction company?
A good Operating Income depends on the Construction industry context. However, Operating Income 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 Operating Income mean?
A high Operating Income can signal that a stock is expensive relative to its fundamentals. Operating Income equals sales less all operating expenses. It is linked to EBIT. View historical data on Diamond Building Products PCL and its competitors. Diamond Building Products PCL's current Operating Income is ฿421 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Diamond Building Products PCL stock overvalued right now?
Based on GuruFocus' analysis, Diamond Building Products PCL (BKK:DRT) is currently considered Modestly Undervalued. The stock's GF Value™ is ฿6.48, compared to a current price of ฿5.35 — trading 17.4% below its estimated fair value. The current Operating Income is ฿421 Mil. Diamond Building Products PCL's overall GF Score™ is 73/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Income calculated?
Operating Income is calculated from a company's financial statements. For Diamond Building Products PCL (BKK:DRT), the current Operating Income is ฿421 Mil as of Mar. 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 Diamond Building Products PCL (BKK:DRT) Overvalued in 2026?
Based on GuruFocus' analysis, Diamond Building Products PCL stock appears to be undervalued.
The current stock price of ฿5.35 is trading 17.4% below its estimated GF Value™ of ฿6.48.
GuruFocus considers Diamond Building Products PCL to be Modestly Undervalued.
Key valuation signals for BKK:DRT:
Operating Income: ฿421 Mil
GF Value™: ฿6.48 vs. price of ฿5.35 (17.4% below fair value)
No single metric tells the full story. See the BKK:DRT stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Diamond Building Products PCL is a manufacturer and distributor of roof tiles, artificial wood, and autoclaved aerated concrete. Its products and services include Roofing Solutions, Decorative Materials Solutions, Lightweight Concrete Solutions, Lightweight Materials Solutions, and Diamond Modular. Geographically, the Company operates throughout Thailand and overseas, generating the majority of its revenue from Thailand. The Company generates the majority of its revenue from the sale of products.
73GF Score
Get the complete analysis for BKK:DRT
Operating Income is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
BKK:DRT has been successfully added to your 
