Companies are considered medium sized when they match at least one of the following conditions:
- Operating revenue >= 1 million EUR (1.3 million USD)
- Total assets >= 2 million EUR (2.6 million USD)
- Employees >= 15
- Not very large or large
Companies with ratios operating revenue per employee or total assets per employee below 100 EUR (130 USD) are excluded from this category. Companies for which operating revenue, total assets and employees are unknown but have a level of capital comprised between 50 thousand EUR (65 thousand USD) and 500 thousand EUR (650 thousand USD) are also included in the category.