Edison InternationalMEX:EIX1 63 Operating Margin % is 26.03% as of Mar. 2026, which is 63% above its 10-year median of 15.96. GuruFocus rates MEX:EIX1 with a GF Score™ of 63/100 and a GF Value™ of MXN1,215.08 (Fairly Valued). The stock has 12 warning signs investors should review. Among 499 Utilities - Regulated companies, Edison International ranks better than 67.94% on this metric.
Edison International operating margin is expanding. Margin expansion is usually a good sign.
The historical rank and industry rank for Edison International's Operating Margin % or its related term are showing as below:
MEX:EIX1'
s Operating Margin % Range Over the Past 10 Years
Min: -3.74 Med: 15.96 Max: 27.13
Current: 21.24
MEX:EIX1's Operating Margin % is ranked better than 67.94% of 499
companies
in the Utilities - Regulated industry
Industry Median: 14.97
vs MEX:EIX1: 21.24
Edison International's 5-Year Average Operating Margin % Growth Rate was 28.20% per year.
Edison International (MEX:EIX1) 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.
Edison International Operating Margin % Related Terms
Edison International Operating Margin % Historical Data
* Premium members only.
The historical data trend for Edison International'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.
MEX:EIX1 vs FE, PPL, CNP: Operating Margin % Comparison
For the Utilities - Regulated Electric subindustry, Edison International'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.
Edison International Operating Margin % vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, Edison International's Operating Margin % distribution charts can be found below:
* The bar in red indicates where Edison International's Operating Margin % falls into.
Edison International Operating Margin % Calculation
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.
Edison International's Operating Margin % for the fiscal year that ended in Dec. 2025 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.
Edison International (MEX:EIX1) has a Operating Margin % of 26.03% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on Edison International and its competitors. This is 63% above median its historical median of 15.96. According to the industry distribution chart, Edison International ranks #160 out of 499 companies in the Utilities - Regulated industry, placing it in the top 32.1%.
Is Edison International's Operating Margin % too high?
Edison International's current Operating Margin % of 26.03% is 63% above median its 10-year median of 15.96. The Utilities - Regulated industry median Operating Margin % is 14.97. Edison International's value of 26.03% is 73.9% above this industry median. Based on the distribution chart, Edison International ranks #160 out of 499 companies in the Utilities - Regulated industry, which is above the industry midpoint. Overall, Edison International has a GF Score™ of 63/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Edison International's Operating Margin % compare to FE and PPL?
According to the Utilities - Regulated industry distribution chart, Edison International ranks #160 out of 499 companies for Operating Margin %. This puts Edison International in the upper half of its industry. The industry median Operating Margin % is 14.97. Edison International's value of 26.03% is 73.9% above this benchmark. While the company's 10-year median is 15.96 vs. the industry median of 14.97, Edison International 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 an Utilities - Regulated company?
The median Operating Margin % among Utilities - Regulated companies is 14.97, based on 499 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. Edison International's current Operating Margin % of 26.03% is 73.9% 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 Edison International and its competitors. For the Utilities - Regulated industry, the median Operating Margin % is 14.97 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Edison International's current Operating Margin % is 26.03%, which is 63% above median its own 10-year median of 15.96. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Edison International stock overvalued right now?
Based on GuruFocus' analysis, Edison International (MEX:EIX1) is currently considered Fairly Valued. The stock's GF Value™ is MXN1,215.08, compared to a current price of MXN1,202.92 — trading 1% below its estimated fair value. The current Operating Margin % is 26.03%, which is 63% above median its 10-year median of 15.96 and 73.9% above the Utilities - Regulated industry median of 14.97. Edison International's overall GF Score™ is 63/100 with 12 warning signs 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 Edison International (MEX:EIX1), the current Operating Margin % is 26.03% 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 Edison International (MEX:EIX1) Overvalued in 2026?
Based on GuruFocus' analysis, Edison International stock appears to be undervalued.
The current stock price of MXN1,202.92 is trading 1% below its estimated GF Value™ of MXN1,215.08.
GuruFocus considers Edison International to be Fairly Valued.
Key valuation signals for MEX:EIX1:
Operating Margin %: 26.03% (63% above median its 10-year median of 15.96)
GF Value™: MXN1,215.08 vs. price of MXN1,202.92 (1% below fair value)
Industry Position: 73.9% above the Utilities - Regulated median (#160 of 499)
No single metric tells the full story. See the MEX:EIX1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Edison International is the parent company of Southern California Edison, an electric utility that distributes electricity to 5 million customers in a 50,000-square-mile area of Southern California, excluding Los Angeles. Edison Energy owns interests in nonutility businesses that deal in energy-related products and services. In 2014, Edison International sold its wholesale power generation subsidiary Edison Mission Energy out of bankruptcy to NRG Energy.
63GF Score
Get the complete analysis for MEX:EIX1
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
MEX:EIX1 has been successfully added to your 
