SDI

SDI Rule of 40

Delisted·Jul 7, 2026

The Rule of 40 of SDI (SDI.AX) as of Oct 8, 2026 is 13.77 %. In the previous year, Rule of 40 was 21.44 % — a change of -35.77% (lower).

Rule of 40

13.77 %

YoY

-35.77%

Last updated:

Rule of 40 of SDI is 2025 13.77 % . Rule of 40 of SDI was 2024 21.44 % . It decreases by -35.77% lower compared to the previous year.

The SDI Rule of 40 history

  • 3 Years

  • 10 Years

  • 25 Years

  • Max

Rule of 40
Date
Rule of 40
Jan 1, 2018
12.14 AUD
Jan 1, 2019
18.88 AUD
Jan 1, 2020
-4.97 AUD
Jan 1, 2021
39.34 AUD
Jan 1, 2022
28.08 AUD
Jan 1, 2023
24.74 AUD
Jan 1, 2024
21.44 AUD
Jan 1, 2025
13.77 AUD
The SDI Rule of 40 history
YEARRule of 40YoY
13.77 %-35.77%
21.44 %-13.32%
24.74 %-11.92%
28.08 %-28.62%
39.34 %-891.06%
-4.97 %-126.34%
18.88 %+55.47%
12.14 %-2.66%
12.48 %-45.68%
22.97 %+27.26%
18.05 %—
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SDI Stock analysis

What does SDI do? SDI Ltd is a British company specializing in the development and manufacture of scientific and medical devices. The company was founded by John Poulter in 1952 and is headquartered in Basingstoke, Hampshire. The history of SDI Ltd began with the development of scientific measuring devices, particularly instruments for measuring optical signals. Over the years, the company has specialized in the development of devices for medical diagnostics and therapy. SDI Ltd now operates in various areas. One of its main business fields is microbiology and infection prevention. The company offers a wide range of products including test systems for infectious diseases such as HIV, Hepatitis B and C, tuberculosis, and malaria. Another business field of SDI Ltd is the development of devices for the diagnosis of cancer and other diseases. The company offers both instruments for tissue sampling as well as automated diagnostic systems. SDI Ltd is also active in medical technology and offers a wide range of products, from simple instruments like thermal thermometers to complex surgical instruments and implants. In addition to medical diagnostics and therapy, SDI Ltd is also active in the field of analytical technology. The company offers instruments for chemical analysis, environmental monitoring, and food sampling. The business model of SDI Ltd is based on the development and manufacture of high-quality and reliable devices for scientific, medical, and industrial use. The company relies on close collaboration with customers and partners to provide innovative solutions for the challenges of modern science and medicine. An important part of SDI Ltd's business model is research and development. The company invests a significant portion of its revenue in the development of new products and technologies to always offer its customers the latest and best solutions. Overall, SDI Ltd has established itself as a leading company in the field of scientific and medical devices. The company has a long history of successful product developments and is known for its high quality, reliability, and innovation. With its wide range of products and its commitment to research and development, SDI Ltd is well-equipped to continue playing an important role in science and medicine in the future. SDI is one of the most popular companies on Eulerpool.

Frequently Asked Questions about SDI stock

Rule of 40 of SDI is 13.77 % in 2025.

On Eulerpool you can find the complete historical development of Rule of 40 SDI since 2006 – with annual values, charts, and detailed analysis.

The Rule of 40 states that a company's revenue growth rate plus profit margin should exceed 40%. It is widely used to evaluate SaaS and high-growth companies.

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