How has Castro Model Rule of 40 developed historically?

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

What is the Castro Model Rule of 40?

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.

Castro Model Rule of 40

CAST.TA

The Rule of 40 of Castro Model (CAST.TA) as of Jul 24, 2026 is 29.42 %. In the previous year, Rule of 40 was 11.53 % — a change of 155.24% (higher).

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Rule of 40

29.42 %

YoY

155.24%

Last updated: Jul 24, 2026

Rule of 40 of Castro Model is 2026 29.42 % . Rule of 40 of Castro Model was 2025 11.53 % . It decreases by 155.24% higher compared to the previous year.

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