Diploma PLC
DPLM
Rank in Stocks
#1659
Diploma PLC is a global provider of highly specialized technical products and... Diploma PLC is a global provider of highly specialized technical products and services, operating across the United Kingdom, Europe, North America, and other international markets. The company structures its diverse operations into three primary business sectors: Life Sciences, Seals, and Controls. The Life Sciences division caters to healthcare and scientific research institutions, offering a comprehensive suite of clinical diagnostics instrumentation, related consumables, and specialized surgical equipment for hospitals, clinics, and pathology laboratories. It also provides advanced patient monitoring technologies, laboratory diagnostics, and medically supervised nutritional products. Additionally, this segment supplies specialized containment solutions and analytical tools vital for the chemical, petrochemical, environmental research, and pharmaceutical industries. The Seals sector specializes in critical sealing technologies. It provides a wide array of seals, gaskets, filters, hydraulic cylinders, and various components, including O-rings and custom-engineered parts, primarily serving heavy mobile machinery, industrial equipment, and fluid sealing applications. Lastly, the Controls segment offers a broad portfolio of connectivity and control solutions. This includes products for cable identification, termination, and management, low-voltage cables, and a variety of harness components and specialist connectors, often bundled with technical support and automated inventory services for demanding sectors like civil aerospace, motorsport, and defense. Furthermore, this division supplies fluid controllers, compressors, valves, temperature and pressure measurement devices, liquid dispensing components, and industrial silicones, adhesives, and sealants. Diploma PLC was incorporated in 1931 and is based in London, United Kingdom.
Share Price
$96.17
Last synced: 2026-11-09
Market Cap
$12.90B
Change (1 day)
2.97%
Change (1 year)
34.30%
Country
Stock data: Financial Modeling PrepΒ·Updated Β·Not investment adviceΒ·How we calculate this
Trade Diploma PLC (DPLM)
Category
Industrials
Operating Margin for Diploma PLC (DPLM)
Operating Margin as of November 2026 TTM: 20.50%
According to Diploma PLC's latest financial reports, its current operating margin (TTM) is 20.50%. At the end of 2025 the company had an operating margin of 20.38%.
Operating Margin history for Diploma PLC from 2000 to 2026
Operating Margin at the end of each year
| Year | Operating Margin | Change |
|---|---|---|
| 2026 (TTM) | 20.50% | 0.59% |
| 2025 | 20.38% | 33.99% |
| 2024 | 15.21% | -2.69% |
| 2023 | 15.63% | 6.40% |
| 2022 | 14.69% | 1.45% |
| 2021 | 14.48% | 8.71% |
| 2020 | 13.32% | -13.51% |
| 2019 | 15.40% | 2.19% |
| 2018 | 15.07% | -0.13% |
| 2017 | 15.09% | 4.57% |
| 2016 | 14.43% | -8.61% |
| 2015 | 15.79% | -3.60% |
| 2014 | 16.38% | -3.59% |
| 2013 | 16.99% | -4.71% |
| 2012 | 17.83% | 1.77% |
| 2011 | 17.52% | 12.38% |
| 2010 | 15.59% | 10.88% |
| 2009 | 14.06% | -8.10% |
| 2008 | 15.30% | 2.00% |
| 2007 | 15.00% | -36.33% |
| 2006 | 23.56% | 58.97% |
| 2005 | 14.82% | 39.15% |
| 2004 | 10.65% | -4.91% |
| 2003 | 11.20% | 2.00% |
| 2002 | 10.98% | 9.69% |
| 2001 | 10.01% | 2,227.91% |
| 2000 | 0.43% | 0.00% |
Operating Margin for similar companies or competitors
| Company | Operating Margin | Operating Margin Difference | Country |
|---|---|---|---|
| 14.57% | -99.29% |
US
|
|
| 20.54% | -99.00% |
US
|
|
| 9.01% | -99.56% |
US
|
|
| 5.57% | -99.73% |
US
|
|
| -2.27% | -100.11% |
US
|
What is a company's Operating Margin?
The operating margin is a key indicator to assess the profitability of a company. Higher operating margins are generaly better as they show that a company is able to sell its products or services for much more than their production costs. The operating margin is calculated by dividing a company's earnings by its revenue.
Questions about Diploma PLC's operating margin
What is Diploma PLC's operating margin?
Diploma PLC's operating margin is 20.50%, as of Nov 2026.
What was Diploma PLC's operating margin in 2025?
In 2025, Diploma PLC's operating margin was 20.38%, compared with 15.21% in 2024.
How has Diploma PLC's operating margin changed since 2020?
From 2020 to 2025, Diploma PLC's operating margin was highest in 2025 (20.38%) and lowest in 2020 (13.32%).
How does Diploma PLC's operating margin compare with similar companies?
Diploma PLC's operating margin (20.50%) is higher than that of 4 of the 5 similar companies listed above. The highest among them is Fastenal Company, with 20.54%.