Blue StarBOM:500067 -0.99%93 Operating Margin % is 6.83% as of Mar. 2026, which is 39% above its 10-year median of 4.90. GuruFocus rates BOM:500067 with a GF Score™ of 93/100 and a GF Value™ of ₹1,915.80 (Modestly Undervalued). The stock has 1 warning sign investors should review. Among 1,767 Construction companies, Blue Star ranks better than 50.82% on this metric.
Operating Margin % is calculated as Operating Income divided by its Revenue. Blue Star's Operating Income for the
three
months ended in Mar. 2026 was ₹2,780 Mil. Blue Star's Revenue for the
three
months ended in Mar. 2026 was ₹40,721 Mil. Therefore, Blue Star's Operating Margin % for the quarter that ended in Mar. 2026 was 6.83%.
Good Sign:
Blue Star Ltd operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for Blue Star's Operating Margin % or its related term are showing as below:
BOM:500067'
s Operating Margin % Range Over the Past 10 Years
Min: 3.58 Med: 4.9 Max: 6.25
Current: 6.06
BOM:500067's Operating Margin % is ranked better than 50.82% of 1767
companies
in the Construction industry
Industry Median: 5.89
vs BOM:500067: 6.06
Blue Star's 5-Year Average Operating Margin % Growth Rate was 11.40% per year.
Blue Star's Operating Income for the
three
months ended in Mar. 2026 was ₹2,780 Mil.
Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was ₹7,516 Mil.
Blue Star (BOM:500067) Operating Margin % Explanation
Just like Gross Margin %, it is important to see a company maintains its operating margin over time. Among the same industry, a company with higher operating margin is more efficient in its operation. It is also more stable during industry slowdown or recessions. Peter Lynch prefers those with higher margins than those with lower margins.
Be Aware
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 Nokias Operating Margin % had already been in decline since 2002, although its Earnings per Share (Diluted) 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.
Blue Star Operating Margin % Related Terms
Blue Star Operating Margin % Historical Data
* Premium members only.
The historical data trend for Blue Star's Operating Margin % can be seen below:
* 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.
BOM:500067 vs TT, JCI, CARR: Operating Margin % Comparison
For the Building Products & Equipment subindustry, Blue Star's Operating Margin %, along with its competitors' market caps and Operating Margin % 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.
Blue Star Operating Margin % vs Construction Industry
For the Construction industry and Industrials sector, Blue Star's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Blue Star's Operating Margin % falls into.
Operating Margin % - also known as operating income margin, operating profit margin and return on sales (ROS) - is the ratio of Operating Income divided by net sales or Revenue, usually presented in percent.
Blue Star's Operating Margin % for the fiscal year that ended in Mar. 2026 is calculated as
* 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.
Blue Star (BOM:500067) has a Operating Margin % of 6.83% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Blue Star and its competitors. This is 39% above median its historical median of 4.90. Over the past decade, Blue Star's Operating Margin % has ranged from 3.58 to 6.25. According to the industry distribution chart, Blue Star ranks #869 out of 1767 companies in the Construction industry, placing it in the top 49.2%.
Is Blue Star's Operating Margin % too high?
Blue Star's current Operating Margin % of 6.83% is 39% above median its 10-year median of 4.90. Over the past 10 years, this metric has ranged from a low of 3.58 to a high of 6.25. The Construction industry median Operating Margin % is 5.89. Blue Star's value of 6.83% is 16% above this industry median. Based on the distribution chart, Blue Star ranks #869 out of 1767 companies in the Construction industry, which is above the industry midpoint. Overall, Blue Star has a GF Score™ of 93/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Blue Star's Operating Margin % compare to TT and JCI?
According to the Construction industry distribution chart, Blue Star ranks #869 out of 1767 companies for Operating Margin %. This puts Blue Star in the upper half of its industry. The industry median Operating Margin % is 5.89. Blue Star's value of 6.83% is 16% above this benchmark. Historically, Blue Star's own Operating Margin % has ranged from 3.58 to 6.25 over the past decade. While the company's 10-year median is 4.90 vs. the industry median of 5.89, Blue Star has consistently been above 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 Operating Margin % for a Construction company?
The median Operating Margin % among Construction companies is 5.89, based on 1,767 companies in the industry. Companies in the top quartile (top 25%) have a Operating Margin % significantly above this median, while those in the bottom quartile fall well below. However, Operating Margin % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Blue Star's current Operating Margin % of 6.83% is 16% above 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 Operating Margin % mean?
A high Operating Margin % can signal that a stock is expensive relative to its fundamentals. Operating margin is the ratio of total operating income to net sales. View historical data on Blue Star and its competitors. For the Construction industry, the median Operating Margin % is 5.89 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Blue Star's current Operating Margin % is 6.83%, which is 39% above median its own 10-year median of 4.90. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Blue Star stock overvalued right now?
Based on GuruFocus' analysis, Blue Star (BOM:500067) is currently considered Modestly Undervalued. The stock's GF Value™ is ₹1,915.80, compared to a current price of ₹1,636.50 — trading 14.6% below its estimated fair value. The current Operating Margin % is 6.83%, which is 39% above median its 10-year median of 4.90 and 16% above the Construction industry median of 5.89. Blue Star's overall GF Score™ is 93/100 with 1 warning sign to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Operating Margin % calculated?
Operating Margin % is calculated from a company's financial statements. For Blue Star (BOM:500067), the current Operating Margin % is 6.83% 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 Blue Star (BOM:500067) Overvalued in 2026?
Based on GuruFocus' analysis, Blue Star stock appears to be undervalued.
The current stock price of ₹1,636.50 is trading 14.6% below its estimated GF Value™ of ₹1,915.80.
GuruFocus considers Blue Star to be Modestly Undervalued.
Key valuation signals for BOM:500067:
Operating Margin %: 6.83% (39% above median its 10-year median of 4.90)
GF Value™: ₹1,915.80 vs. price of ₹1,636.50 (14.6% below fair value)
Industry Position: 16% above the Construction median (#869 of 1767)
No single metric tells the full story. See the BOM:500067 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Blue Star Ltd is an India-based air conditioning and commercial refrigeration company. It serves corporate, commercial, and residential entities. The company's operating segment includes Electro-Mechanical Projects and Commercial Air Conditioning Systems; Unitary Products and Professional Electronics and Industrial Systems. It generates maximum revenue from the Electro-Mechanical Projects and Commercial Air-conditioning Systems segment which includes central air-conditioning projects, Electrical Contracting business, and Packaged air-conditioning businesses including manufacturing and after-sales service. Geographically, the company generates a majority of its revenue from its operations in India.
93GF Score
Get the complete analysis for BOM:500067
Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
BOM:500067 has been successfully added to your 
