Ranking · Walloon Brabant · NACE 70
Activities of head offices and management consultancy: the largest companies in Walloon Brabant
As of 14 Nov 2026, 4,026 companies in Activities of head offices and management consultancy (NACE 70) in Walloon Brabant publish total assets in recent accounts (financial years 2023 to 2026). The top 10 account for €1.53bn, out of €4.56bn for all of them; median total assets are 173,095 €. Gerefis leads with €443.8m (financial year 2025).
Top 50 · Activities of head offices and management consultancy · 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 | Gerefis 1331 Rixensart | €443.8m | €2.95m | €439.8m | 1.6 | 2025 |
| 2 | Banqup Group 1310 La Hulpe | €328.9m | €12.9m | €252.8m | 21.8 | 2025 |
| 3 | OSG Europe 1300 Wavre | €175.5m | €2.35m | €175.0m | 3.6 | 2025 |
| 4 | Reason Maincla 1490 Court-Saint-Étienne | €121.0m | — | €120.2m | — | 2025 |
| 5 | Fasska Holding 1470 Genappe | €113.7m | — | €110.4m | — | 2024 |
| 6 | Argayon 1440 Braine-le-Château | €105.3m | €1.91m | €55.8m | 4.8 | 2025 |
| 7 | M.G. Finances 1440 Braine-le-Château | €65.7m | €16.0m | €24.7m | 50.3 | 2023 |
| 8 | L.B.P. 1490 Court-Saint-Étienne | €61.7m | — | €60.1m | — | 2025 |
| 9 | Carmeuse Coordination Center 1348 Ottignies-Louvain-la-Neuve | €58.6m | €83.1m | €3.75m | 38.8 | 2025 |
| 10 | '' Rewest Holding'' 1400 Nivelles | €55.2m | 406,318 € | €34.3m | — | 2025 |
| 11 | Axial Invest 1470 Genappe | €53.1m | 676,288 € | €28.5m | 6.7 | 2025 |
| 12 | Copawin 1348 Ottignies-Louvain-la-Neuve | €51.7m | — | €45.6m | — | 2025 |
| 13 | OKSA 1410 Waterloo | €50.7m | — | €50.7m | — | 2025 |
| 14 | Image Recognition Integrated Systems Group 1435 Mont-Saint-Guibert | €49.6m | 613 € | €42.3m | — | 2025 |
| 15 | AdFinitis 1402 Nivelles | €44.8m | — | €44.6m | 0.4 | 2025 |
| 16 | Philing 1380 Lasne | €42.4m | — | €1.77m | 1.9 | 2025 |
| 17 | Chroma Impact Investment 1435 Mont-Saint-Guibert | €38.5m | — | €38.3m | 0.8 | 2026 |
| 18 | EASI Group 1400 Nivelles | €35.4m | €11.0m | €11.7m | 64.3 | 2025 |
| 19 | Bewatt 1380 Lasne | €32.0m | — | €26.1m | 0.5 | 2025 |
| 20 | Compagnie d'investissement saelens 1380 Lasne | €30.0m | — | €26.0m | 0.4 | 2025 |
| 21 | Carabi 1342 Ottignies-Louvain-la-Neuve | €28.1m | — | €10.7m | — | 2025 |
| 22 | Olinessa Management 1300 Wavre | €27.0m | €2.46m | €22.4m | 6.0 | 2025 |
| 23 | Centigon Holdings 1300 Wavre | €25.8m | — | −248,193 € | — | 2025 |
| 24 | PROPERTY et ADVICE 1390 Grez-Doiceau | €24.0m | — | €4.63m | — | 2025 |
| 25 | Belgocodex 1380 Lasne | €23.7m | — | €15.3m | 1.0 | 2024 |
| 26 | RLE Invest 1410 Waterloo | €23.0m | — | €11.5m | 7.5 | 2025 |
| 27 | KO Immo 1410 Waterloo | €21.8m | — | €6.01m | — | 2025 |
| 28 | Stantec 1310 La Hulpe | €21.6m | €26.3m | €8.28m | 66.1 | 2025 |
| 29 | Altro Finance & Insurance Belgium 1435 Mont-Saint-Guibert | €21.2m | 19,138 € | €1.36m | — | 2024 |
| 30 | Belinda Holdings 1348 Ottignies-Louvain-la-Neuve | €20.7m | 120,000 € | €15.6m | — | 2023 |
| 31 | Capnor 1380 Lasne | €19.9m | — | 10,000 € | — | 2024 |
| 32 | Belavenir 1410 Waterloo | €19.7m | — | €18.8m | — | 2025 |
| 33 | Prosci Europe 1435 Mont-Saint-Guibert | €19.1m | — | €8.18m | 1.0 | 2024 |
| 34 | PORR Government Services Benelux 1370 Jodoigne | €16.8m | €17.8m | €10.4m | 36.4 | 2025 |
| 35 | 5M 1430 Rebecq | €16.7m | — | €16.1m | 4.2 | 2025 |
| 36 | Maeter Invest 1320 Beauvechain | €15.6m | — | €2.08m | — | 2025 |
| 37 | Jlco Consulting 1380 Lasne | €15.1m | — | €4.68m | 4.0 | 2025 |
| 38 | Gavinas 1420 Braine-l'Alleud | €15.0m | — | €14.1m | — | 2025 |
| 39 | Loiselet Immo 1480 Tubize | €14.9m | — | €2.79m | — | 2026 |
| 40 | Belgalam 1380 Lasne | €14.4m | 30,000 € | €9.68m | — | 2024 |
| 41 | Esope 1348 Ottignies-Louvain-la-Neuve | €14.4m | — | €2.32m | — | 2025 |
| 42 | MAX83 1380 Lasne | €14.0m | — | €9.91m | — | 2025 |
| 43 | BioScientific Group 1300 Wavre | €13.6m | — | €6.14m | — | 2025 |
| 44 | Servim 1410 Waterloo | €13.4m | — | €11.5m | — | 2025 |
| 45 | PTE Invest 1300 Wavre | €13.3m | €1.34m | €5.64m | — | 2025 |
| 46 | Soil Capital Belgium 1348 Ottignies-Louvain-la-Neuve | €12.6m | — | €7.83m | 28.3 | 2026 |
| 47 | Husibo 1342 Ottignies-Louvain-la-Neuve | €12.4m | — | €3.80m | — | 2025 |
| 48 | Advestate 1325 Chaumont-Gistoux | €12.0m | — | €8.04m | — | 2025 |
| 49 | TVD Holding 1470 Genappe | €11.9m | — | €7.60m | — | 2025 |
| 50 | A et S Sertang 1300 Wavre | €11.8m | 857,159 € | €7.76m | 3.9 | 2025 |
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.
Activities of head offices and management consultancy 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 materials57
- 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 furniture80
- 32 Other manufacturing94
- 33 Repair, maintenance and installation of machinery and equipment87
- 35 Electricity, gas, steam and air conditioning supply42
- 37 Sewerage13
- 38 Waste collection, recovery and disposal activities21
- 41 Construction of residential and non-residential buildings593
- 42 Civil engineering71
- 43 Specialised construction activities1,986
- 46 Wholesale trade1,783
- 47 Retail trade2,143
- 49 Land transport and transport via pipelines250
- 51 Air transport15
- 52 Warehousing, storage and support activities for transportation80
- 53 Postal and courier activities11
- 55 Accommodation102
- 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 activities412
- 68 Real estate activities2,735
- 69 Legal and accounting activities1,163
- 71 Architectural and engineering activities; technical testing and analysis906
- 72 Scientific research and development101
- 73 Activities of advertising, market research and public relations1,026
- 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
- 80 Investigation and security activities37
- 81 Services to buildings and landscape activities493
- 82 Office administrative, office support and other business support activities641
- 85 Education349
- 86 Human health activities2,543
- 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 motorcycles195
- 96 Personal service activities380
Municipalities with the most companies in the sector · Walloon Brabant
- 1380 Lasne (Couture-Saint-Germain, Lasne-Chapelle-Saint-Lambert, Maransart, …)466
- 1410 Waterloo451
- 1300 Wavre (Limal)278
- 1420 Braine-l'Alleud221
- 1390 Grez-Doiceau (Archennes, Biez, Bossut-Gottechain, …)209
- 1325 Chaumont-Gistoux (Bonlez, Corroy-Le-Grand, Dion-Valmont, …)196
- 1330 Rixensart172
- 1400 Nivelles (Monstreux)158
- 1310 La Hulpe136
- 1332 Rixensart (Genval)123
- 1348 Ottignies-Louvain-la-Neuve (Louvain-La-Neuve)115
- 1470 Genappe (Baisy-Thy, Bousval)95
Frequently asked questions
Which is the largest company in Activities of head offices and management consultancy in Walloon Brabant?
By total assets, it is Gerefis (€443.8m, financial year 2025).
How many companies in Activities of head offices and management consultancy in Walloon Brabant are ranked?
4,026 out of 4,076 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 14 Nov 2026.