| Nom | Fonds propres | Résultats | Chiffre d'affaires | Marge brute | Employés | Ville | |
|---|---|---|---|---|---|---|---|
| 1 | ATLAS SERVICES BELGIUM | € 19.99B | € -1.28M | € 1.80M | - | 13.50 | Evere |
| 2 | ENGIE ENERGY MANAGEMENT | € 19.44B | € 22.65M | € 217.78M | - | 7.00 | Brussel |
| 3 | GlaxoSmithKline Biologicals | € 17.68B | € 3.21B | € 8.86B | - | 8216.40 | Rixensart |
| 4 | KBC Group | € 16.13B | € -12.97M | € 100.18M | - | 637.90 | Sint-Jans-Molenbeek |
| 5 | ELECTRABEL | € 14.01B | € -2.74B | € 15.11B | - | 4248.20 | Brussel |
| 6 | UCB PHARMA | € 11.80B | € 872.81M | € 3.18B | - | 1419.50 | Anderlecht |
| 7 | Bayer | € 11.77B | € 10.59M | € 232.44M | - | 175.50 | Machelen (Brab.) |
| 8 | EXXONMOBIL PETROLEUM & CHEMICAL | € 9.92B | € 799.67M | € 23.71B | - | 1791.00 | Antwerpen |
| 9 | Janssen Pharmaceutica | € 9.83B | € 2.12B | € 22.21B | - | 4954.30 | Beerse |
| 10 | U C B | € 8.93B | € -44.23M | € 66.57M | - | 170.00 | Anderlecht |
| 11 | SYENSQO | € 8.03B | € -149.99M | € 239.21M | - | 349.20 | Brussel |
| 12 | SOCIÉTÉ NATIONALE DES CHEMINS DE FER BELGES | € 7.36B | € -390.87M | € 2.56B | - | Sint-Gillis (bij-Brussel) | |
| 13 | J.C. GENERAL SERVICES | € 7.29B | € 74.54M | € 97.27M | - | 68.00 | Beerse |
| 14 | TotalEnergies Petrochemicals & Refining | € 7.22B | € 425.09M | € 20.35B | - | 374.90 | Brussel |
| 15 | EDF INVESTISSEMENTS GROUPE | € 6.83B | € -1.98M | € 5K | - | 2.90 | Elsene |
| 16 | CAPARBEL | € 6.20B | € -33K | - | - | Brussel | |
| 17 | Azelis Finance | € 5.86B | € -188K | € 6.18M | - | 4.00 | Antwerpen |
| 18 | TOYOTA MOTOR EUROPE | € 5.56B | € -28.83M | € 34.26B | - | 2719.80 | Evere |
| 19 | VINCI FINANCE INTERNATIONAL | € 5.43B | € -1.89M | € 68K | - | 3.00 | Brussel |
| 20 | Unilin Holding | € 5.01B | € -2K | - | - | Wielsbeke | |
| 21 | NEWCO (FDO 2023) | € 4.55B | € -19.67M | € 3.62M | - | 169.90 | Liège |
| 22 | D'Ieteren Group | € 4.53B | € -9.89M | € 15.45M | - | 30.60 | Elsene |
| 23 | ENGIE ENERGY SERVICES INTERNATIONAL | € 4.39B | € 6.67M | € 8.26M | - | Brussel | |
| 24 | Atlas Copco Airpower | € 4.18B | € 727.14M | € 2.57B | - | 3380.00 | Antwerpen |
| 25 | SOLVAY PARTICIPATIONS BELGIQUE | € 4.05B | € -84K | € 26K | - | Brussel | |
| 26 | CTH INVEST | € 4.00B | € -24.26M | € 386K | - | 4.00 | Watermaal-Bosvoorde |
| 27 | Atlas Countries Support | € 3.94B | € -1.08M | € 117K | - | Evere | |
| 28 | argenx | € 3.84B | € -386.59M | € 1.22B | - | 408.90 | Gent |
| 29 | ENGIE CC | € 3.79B | € 11.80M | € 77.74M | - | 245.60 | Brussel |
| 30 | MAATSCHAPPIJ VOOR ROEREND BEZIT VAN DE BOERENBOND | € 3.63B | € -3.19M | € 828K | - | 10.00 | Leuven |