Ranking · Walloon Brabant · NACE 80
Investigation and security activities: the largest companies in Walloon Brabant
As of 12 Nov 2026, 37 companies in Investigation and security activities (NACE 80) in Walloon Brabant publish total assets in recent accounts (financial years 2024 to 2025). The top 10 account for €34.0m, out of €36.8m for all of them; median total assets are 98,226 €. Stoll Security Belgium leads with €9.73m (financial year 2025).
Top 37 · Investigation and security activities · Walloon Brabant
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 | Stoll Security Belgium 1402 Nivelles | €9.73m | — | €3.65m | 2.9 | 2025 |
| 2 | High Security 1457 Walhain | €7.95m | €23.6m | 452,944 € | 353.0 | 2025 |
| 3 | Bevier Security 1410 Waterloo | €2.88m | — | 950,792 € | 4.1 | 2025 |
| 4 | C. Pro 1480 Tubize | €2.74m | — | €1.41m | 16.1 | 2025 |
| 5 | Experts Services 1370 Jodoigne | €2.54m | — | 969,865 € | — | 2025 |
| 6 | Optimalis Security 1301 Wavre | €2.50m | — | 636,550 € | 165.0 | 2025 |
| 7 | SD Security 1410 Waterloo | €2.07m | — | 862,203 € | 22.0 | 2025 |
| 8 | ESG Security 1380 Lasne | €1.91m | — | 92,461 € | 58.4 | 2025 |
| 9 | Sicmma 1348 Ottignies-Louvain-la-Neuve | €1.19m | — | 144,028 € | — | 2025 |
| 10 | Global Move 1315 Incourt | 443,188 € | — | 110,422 € | — | 2025 |
| 11 | B4 Services Safety and Logistics 1410 Waterloo | 352,304 € | — | 157,008 € | 2.3 | 2025 |
| 12 | Sectec 1301 Wavre | 335,296 € | — | 189,842 € | — | 2025 |
| 13 | Brancart Consulting Services 1360 Perwez | 320,501 € | — | 149,794 € | — | 2025 |
| 14 | DNC TAG 1341 Ottignies-Louvain-la-Neuve | 295,236 € | — | 180,091 € | — | 2025 |
| 15 | Pigeolet 1480 Tubize | 198,100 € | — | 135,338 € | — | 2025 |
| 16 | Safetyworks 1480 Tubize | 172,192 € | — | 87,583 € | — | 2025 |
| 17 | Federal Security Group 1480 Tubize | 140,485 € | — | 38,477 € | — | 2025 |
| 18 | DétectiveBelgique.be 1410 Waterloo | 111,512 € | — | 82,328 € | — | 2025 |
| 19 | ASO Consulting 1370 Jodoigne | 98,226 € | — | 33,621 € | — | 2025 |
| 20 | Belguard Security 1480 Tubize | 85,409 € | — | 48,776 € | — | 2025 |
| 21 | A Video Warehouse 1490 Court-Saint-Étienne | 77,857 € | — | 56,470 € | — | 2025 |
| 22 | Fonber 1390 Grez-Doiceau | 75,573 € | — | 75,573 € | — | 2025 |
| 23 | Flymesafe 1410 Waterloo | 67,899 € | — | 20,000 € | — | 2025 |
| 24 | IQ Security 1410 Waterloo | 66,080 € | — | −215,809 € | 1.1 | 2024 |
| 25 | F3S Belgium 1420 Braine-l'Alleud | 59,173 € | — | 46,746 € | — | 2025 |
| 26 | Reach Nation 1440 Braine-le-Château | 57,121 € | — | 42,340 € | — | 2025 |
| 27 | GESTICOR Olivier de BORMAN 1320 Beauvechain | 50,967 € | 55,237 € | 32,928 € | — | 2025 |
| 28 | RED Alarm 1390 Grez-Doiceau | 49,955 € | — | −58,767 € | — | 2025 |
| 29 | Mélôsiam 1460 Ittre | 47,585 € | — | 19,350 € | — | 2025 |
| 30 | Infinit Technologies 1410 Waterloo | 46,469 € | — | 9,681 € | — | 2025 |
| 31 | "A.S.Security" 1474 Genappe | 42,913 € | — | 11,356 € | — | 2025 |
| 32 | ATALA Consulting 1400 Nivelles | 27,836 € | — | 11,244 € | — | 2025 |
| 33 | Steelcoats 1325 Chaumont-Gistoux | 22,431 € | — | 22,431 € | — | 2025 |
| 34 | G.L. Services 1310 La Hulpe | 20,001 € | — | 10,946 € | — | 2025 |
| 35 | IARD Consultance 1390 Grez-Doiceau | 16,439 € | — | 10,582 € | — | 2025 |
| 36 | Black Swan Group 1420 Braine-l'Alleud | 11,980 € | — | −91,440 € | — | 2025 |
| 37 | MATH RiZK 1348 Ottignies-Louvain-la-Neuve | 9,982 € | — | 8,498 € | — | 2024 |
Ranking based on each company's own annual accounts (statutory, not consolidated): a subsidiary and its parent appear separately, and the ranking differs from lists based on consolidated group accounts.
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
Investigation and security activities across Belgium → All sectors · Walloon Brabant →
Other sectors · Walloon Brabant
- 01 Crop and animal production, hunting and related service activities368
- 02 Forestry and logging50
- 08 Other mining and quarrying11
- 10 Manufacture of food products186
- 11 Manufacture of beverages42
- 13 Manufacture of textiles23
- 14 Manufacture of wearing apparel26
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials56
- 17 Manufacture of paper and paper products13
- 18 Printing and reproduction of recorded media152
- 20 Manufacture of chemicals and chemical products46
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations46
- 22 Manufacture of rubber and plastic products29
- 23 Manufacture of other non-metallic mineral products56
- 24 Manufacture of basic metals16
- 25 Manufacture of fabricated metal products, except machinery and equipment165
- 26 Manufacture of computer, electronic and optical products66
- 27 Manufacture of electrical equipment38
- 28 Manufacture of machinery and equipment n.e.c.67
- 29 Manufacture of motor vehicles, trailers and semi-trailers23
- 30 Manufacture of other transport equipment14
- 31 Manufacture of furniture81
- 32 Other manufacturing94
- 33 Repair, maintenance and installation of machinery and equipment87
- 35 Electricity, gas, steam and air conditioning supply41
- 37 Sewerage13
- 38 Waste collection, recovery and disposal activities21
- 41 Construction of residential and non-residential buildings593
- 42 Civil engineering71
- 43 Specialised construction activities1,985
- 46 Wholesale trade1,783
- 47 Retail trade2,144
- 49 Land transport and transport via pipelines250
- 51 Air transport15
- 52 Warehousing, storage and support activities for transportation80
- 53 Postal and courier activities11
- 55 Accommodation101
- 56 Food and beverage service activities1,007
- 58 Publishing activities166
- 59 Motion picture, video and television programme production, sound recording and music publishing activities234
- 60 Programming, broadcasting, news agency and other content distribution activities21
- 61 Telecommunication35
- 62 Computer programming, consultancy and related activities1,984
- 63 Computing infrastructure, data processing, hosting and other information service activities159
- 64 Financial service activities, except insurance and pension funding733
- 65 Insurance, reinsurance and pension funding, except compulsory social security24
- 66 Activities auxiliary to financial services and insurance activities411
- 68 Real estate activities2,734
- 69 Legal and accounting activities1,163
- 70 Activities of head offices and management consultancy4,027
- 71 Architectural and engineering activities; technical testing and analysis907
- 72 Scientific research and development101
- 73 Activities of advertising, market research and public relations1,027
- 74 Other professional, scientific and technical activities340
- 75 Veterinary activities118
- 77 Rental and leasing activities136
- 78 Employment activities99
- 79 Travel agency, tour operator and other reservation service and related activities49
- 81 Services to buildings and landscape activities493
- 82 Office administrative, office support and other business support activities641
- 85 Education348
- 86 Human health activities2,542
- 87 Residential care activities75
- 88 Social work activities without accommodation85
- 90 Arts creation and performing arts activities186
- 91 Libraries, archives, museums and other cultural activities13
- 93 Sports activities and amusement and recreation activities295
- 94 Activities of membership organisations44
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles196
- 96 Personal service activities380
Municipalities with the most companies in the sector · Walloon Brabant
- 1410 Waterloo7
- 1480 Tubize (Clabecq, Oisquercq, Saintes)6
- 1348 Ottignies-Louvain-la-Neuve (Louvain-La-Neuve)3
- 1390 Grez-Doiceau (Archennes, Biez, Bossut-Gottechain, …)3
- 1301 Wavre (Bierges)2
- 1370 Jodoigne (Dongelberg, Jauchelette, Jodoigne-Souveraine, …)2
- 1400 Nivelles (Monstreux)2
- 1420 Braine-l'Alleud2
- 1310 La Hulpe1
- 1315 Incourt (Glimes, Opprebais, Piètrebais, …)1
- 1320 Beauvechain (Hamme-Mille, L'ecluse, Nodebais, …)1
- 1325 Chaumont-Gistoux (Bonlez, Corroy-Le-Grand, Dion-Valmont, …)1
Frequently asked questions
Which is the largest company in Investigation and security activities in Walloon Brabant?
By total assets, it is Stoll Security Belgium (€9.73m, financial year 2025).
How many companies in Investigation and security activities in Walloon Brabant are ranked?
37 out of 40 active companies in the sector with their registered office in the area: those whose latest accounts are less than 3 years old.
Why does this ranking differ from other lists?
It uses each company's annual accounts as filed with the National Bank, not consolidated group accounts. A holding, a subsidiary or a purchasing entity can therefore appear separately. Only companies whose latest accounts are less than 3 years old are ranked.
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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 12 Nov 2026.