Investigation and security activities
534 Belgian companies whose main activity falls under NACE code 80 have filed annual accounts. Their median solvency is 44.9% for financial year 2024.
Sector medians
Computed by IdonisDistribution across the sector's companies for financial year 2024: a quarter of companies sit below the 1st quartile, half below the median, three quarters below the 3rd quartile.
| Indicator | 1st quartile | Median | 3rd quartile | Companies |
|---|---|---|---|---|
| Solvency | 14.5% | 44.9% | 71.4% | 451 |
| Current ratio | 0.85 | 1.47 | 2.99 | 437 |
| ROE | -0.7% | 15.9% | 47.0% | 377 |
| Equity | 11,444 € | 66,507 € | 220,589 € | 457 |
| Total assets | 58,882 € | 178,919 € | 629,810 € | 457 |
| Net result | −3,743 € | 9,696 € | 41,346 € | 456 |
| Headcount (avg FTE) | 2.0 | 8.2 | 34.4 | 144 |
Medians computed by Idonis from annual accounts filed with the National Bank, all sizes combined. The same panel is the sector benchmark on every company page. Method
Largest companies: Investigation and security activities
Ranked by total assets in the latest filed accounts. This is a size criterion, not an assessment.
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Securitas 1831 Machelen (Brab.) | €215.8m | €369.4m | €45.3m | 4,594.8 | 2025 |
| 2 | G4S Secure Solutions 1000 Brussels | €109.6m | €187.6m | −€5.91m | 3,159.9 | 2025 |
| 3 | Verisure 1130 Brussels | €82.7m | €142.7m | €50.5m | 200.6 | 2025 |
| 4 | Protection Unit 4470 Saint-Georges-sur-Meuse | €64.6m | €145.8m | €1.07m | 2,196.9 | 2025 |
| 5 | Brink's Solutions Belgium 1702 Dilbeek | €54.7m | €65.7m | €4.49m | — | 2025 |
| 6 | Securitas Alert Services 1831 Machelen (Brab.) | €42.7m | €17.0m | €32.1m | 55.2 | 2025 |
| 7 | SERIS Security 1831 Machelen (Brab.) | €40.5m | €90.2m | €11.7m | 1,274.6 | 2025 |
| 8 | G4S Aviation Security 1000 Brussels | €38.2m | €94.6m | €19.3m | 1,664.8 | 2025 |
| 9 | Nexova Cyber 6890 Libin | €33.2m | — | −€3.47m | 43.8 | 2025 |
| 10 | Protection Unit Group 4031 Liège | €30.2m | €8.94m | €1.76m | 6.0 | 2025 |
| 11 | Securitas Technology 1070 Anderlecht | €25.0m | €32.1m | −€29.5m | 187.8 | 2025 |
| 12 | Loomis Belgium 1930 Zaventem | €22.6m | €20.5m | 850,790 € | 217.5 | 2025 |
| 13 | Alertis 8800 Roeselare | €14.1m | €21.8m | €6.73m | 120.8 | 2025 |
| 14 | Securitas Transport Aviation Security 1910 Kampenhout | €13.8m | €34.2m | €6.22m | 452.9 | 2025 |
| 15 | Seris Technology 3200 Aarschot | €12.5m | €35.1m | €3.70m | 148.1 | 2025 |
| 16 | TSA Safety Group 2060 Antwerp | €11.0m | — | €2.48m | 78.9 | 2025 |
| 17 | Oktopus 1050 Brussels | €11.0m | €10.6m | €2.81m | 58.0 | 2025 |
| 18 | G4S Secure Monitoring 1000 Brussels | €10.7m | €8.35m | €7.50m | 42.3 | 2025 |
| 19 | Stoll Security Belgium 1402 Nivelles | €9.73m | — | €3.65m | 2.9 | 2025 |
| 20 | Cennox Cash Services 1800 Vilvoorde | €9.65m | €1.24m | €4.14m | 34.8 | 2025 |
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
Where are they based?
Municipalities with the most
Sub-sectors
Frequently asked questions
How many Investigation and security activities companies are there in Belgium?
534 Belgian companies whose main activity falls under NACE code 80 (Investigation and security activities) have filed annual accounts with the National Bank.
What is the median solvency in Investigation and security activities?
For financial year 2024, median solvency (equity over total assets) is 44.9%. The middle half of companies lies between 14.5% and 71.4% (451 companies).
What is the largest company in Investigation and security activities?
By total assets, it is Securitas (€215.8m, financial year 2025).
Where are Investigation and security activities companies based?
The municipalities with the most: Brussels (16), Ixelles (14), Anderlecht (8).
Analyse companies in Investigation and security activities
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Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 10 Oct 2026.