ACS Actividades de Construccion y Servicios (STU:OCI1) Operating Margin %: 0.00% (As of Mar. 2026)


STU:OCI1 ACS Actividades de Construccion y Servicios SA STU:OCI1
78 GF Score
Price €130.10
GF Value €68.62
Valuation Significantly Overvalued
! 9 Warning Signs
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What is ACS Actividades de Construccion y Servicios Operating Margin %?

ACS Actividades de Construccion y Servicios STU:OCI1 -3.06% 78 Operating Margin % is 0.00% as of Mar. 2026. GuruFocus rates STU:OCI1 with a GF Score™ of 78/100 and a GF Value™ of €68.62 (Significantly Overvalued). The stock has 9 warning signs investors should review. Among 1,767 Construction companies, ACS Actividades de Construccion y Servicios ranks worse than 74.53% on this metric.

Operating Margin % is calculated as Operating Income divided by its Revenue. ACS Actividades de Construccion y Servicios's Operating Income for the three months ended in Mar. 2026 was €0 Mil. ACS Actividades de Construccion y Servicios's Revenue for the three months ended in Mar. 2026 was €12,344 Mil. Therefore, ACS Actividades de Construccion y Servicios's Operating Margin % for the quarter that ended in Mar. 2026 was 0.00%.

The historical rank and industry rank for ACS Actividades de Construccion y Servicios's Operating Margin % or its related term are showing as below:

STU:OCI1' s Operating Margin % Range Over the Past 10 Years
Min: -0.87   Med: 2.63   Max: 4.49
Current: 1.14


STU:OCI1's Operating Margin % is ranked worse than
74.53% of 1767 companies
in the Construction industry
Industry Median: 5.89 vs STU:OCI1: 1.14

ACS Actividades de Construccion y Servicios's 5-Year Average Operating Margin % Growth Rate was 0.00% per year.

ACS Actividades de Construccion y Servicios's Operating Income for the three months ended in Mar. 2026 was €0 Mil. Its Operating Income for the trailing twelve months (TTM) ended in Mar. 2026 was €718 Mil.


ACS Actividades de Construccion y Servicios  (STU:OCI1) 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 Nokia’s 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.


ACS Actividades de Construccion y Servicios Operating Margin % Related Terms


ACS Actividades de Construccion y Servicios Operating Margin % Historical Data

* Premium members only.

The historical data trend for ACS Actividades de Construccion y Servicios'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.

ACS Actividades de Construccion y Servicios Operating Margin % Chart

ACS Actividades de Construccion y Servicios Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Operating Margin %
Get a 7-Day Free Trial Premium Member Only Premium Member Only 1.95 0.83 2.35 1.98 2.91

ACS Actividades de Construccion y Servicios Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Operating Margin % Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 0.00 0.00 0.00 2.79 0.00

STU:OCI1 vs PWR, FIX, EME: Operating Margin % Comparison

For the Engineering & Construction subindustry, ACS Actividades de Construccion y Servicios'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.


ACS Actividades de Construccion y Servicios Operating Margin % vs Construction Industry

For the Construction industry and Industrials sector, ACS Actividades de Construccion y Servicios's Operating Margin % distribution charts can be found below:

* The bar in red indicates where ACS Actividades de Construccion y Servicios's Operating Margin % falls into.


STU:OCI1
78GF Score
ACS Actividades de Construccion y Servicios SA STU:OCI1
Operating Margin % is just one metric. See GF Score™, valuation, warning signs, and more.
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ACS Actividades de Construccion y Servicios 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.

ACS Actividades de Construccion y Servicios's Operating Margin % for the fiscal year that ended in Dec. 2025 is calculated as

Operating Margin %=Operating Income (A: Dec. 2025 ) / Revenue (A: Dec. 2025 )
=1448.339 / 49847.681
=2.91 %

ACS Actividades de Construccion y Servicios's Operating Margin % for the quarter that ended in Mar. 2026 is calculated as

Operating Margin %=Operating Income (Q: Mar. 2026 ) / Revenue (Q: Mar. 2026 )
=0 / 12344
=0.00 %

* 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.

Frequently Asked Questions Learn more about Operating Margin % →
What does a Operating Margin % of 0.00% mean?
ACS Actividades de Construccion y Servicios (STU:OCI1) has a Operating Margin % of 0.00% as of Mar. 2026. Operating margin is the ratio of total operating income to net sales. View historical data on ACS Actividades de Construccion y Servicios and its competitors. According to the industry distribution chart, ACS Actividades de Construccion y Servicios ranks #1317 out of 1767 companies in the Construction industry, placing it in the top 74.5%.
Is ACS Actividades de Construccion y Servicios' Operating Margin % too high?
ACS Actividades de Construccion y Servicios' current Operating Margin % is 0.00%. Based on the distribution chart, ACS Actividades de Construccion y Servicios ranks #1317 out of 1767 companies in the Construction industry, which is below the industry midpoint. Overall, ACS Actividades de Construccion y Servicios has a GF Score™ of 78/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does ACS Actividades de Construccion y Servicios' Operating Margin % compare to PWR and FIX?
According to the Construction industry distribution chart, ACS Actividades de Construccion y Servicios ranks #1317 out of 1767 companies for Operating Margin %. This places ACS Actividades de Construccion y Servicios in the lower half of its industry. The industry median Operating Margin % is 5.89. 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. 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 ACS Actividades de Construccion y Servicios 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. ACS Actividades de Construccion y Servicios's current Operating Margin % is 0.00%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is ACS Actividades de Construccion y Servicios stock overvalued right now?
Based on GuruFocus' analysis, ACS Actividades de Construccion y Servicios (STU:OCI1) is currently considered Significantly Overvalued. The stock's GF Value™ is €68.62, compared to a current price of €130.10 — trading 89.6% above its estimated fair value. The current Operating Margin % is 0.00%. ACS Actividades de Construccion y Servicios' overall GF Score™ is 78/100 with 9 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 ACS Actividades de Construccion y Servicios (STU:OCI1), the current Operating Margin % is 0.00% 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 ACS Actividades de Construccion y Servicios (STU:OCI1) Overvalued in 2026?

Based on GuruFocus' analysis, ACS Actividades de Construccion y Servicios stock appears to be overvalued. The current stock price of €130.10 is trading 89.6% above its estimated GF Value™ of €68.62. GuruFocus considers ACS Actividades de Construccion y Servicios to be Significantly Overvalued.

Key valuation signals for STU:OCI1:

  • Operating Margin %: 0.00%
  • GF Value™: €68.62 vs. price of €130.10 (89.6% above fair value)
  • GF Score™: 78/100 with 9 warning signs

No single metric tells the full story. See the STU:OCI1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


ACS Actividades de Construccion y Servicios Business Description

Address 102, Avenida Pio XII, Madrid, ESP, 28036
ACS Actividades de Construccion y Servicios SA completes construction and service activities for infrastructure and energy projects. In addition to infrastructure-related developments, the company constructs buildings and projects related to the mining sector. It has four operating segments: construction (majority of total revenue), Concessions, Services (which offers comprehensive maintenance services for buildings, public places and organisations) and corporate. Its services revolve around industrial engineering and operating energy, industrial, and mobility infrastructures. Additional sales are generated from aftermarket services and contracts to perform upkeep on existing structures. Approximately half of total revenue derives from the Americas.
78GF Score

Get the complete analysis for STU:OCI1

Operating Margin % is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€130.10
Price
€68.62
GF Value