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| 20 largest companies:
 Fortis NV, 
 InBev SA, 
 Delhaize Le Lion Group, 
 KBC Groupe ex. Almanij NV, 
 Electrabel SA, 
 KBC Bankverzekerin, 
 Tractebel, 
 Solvay, 
 Agrer, 
 DHL Airmays, 
 C&A, 
 GIB Group, 
 Belgacom SA, 
 Agfa-Gevaert Group, 
 Umicore, 
 Colruyt, 
 UCB Group, 
 Cegelec, 
 BDO International B.V., |  | 
| Aerospace & defense: 
 SABCA (Sociétés Anonymes Belges de Construction Aéronautiques), | 
| Agriculture: 
 AOP - Associated Oil Packers, | 
| Food: 
 Abbaye de Scourmont,
 Alpro NV,
 Ardo NV,
 Artic Frisa nv,
 Belgomilk,
 Chaudfontaine-Monopole,
 Eurodima,
 Haacht,
 InBev SA,
 Lima,
 Martens,
 Milcobel,
 Vandemoortele NV,
 Verkest, | 
| Insurance: 
 Apra, | 
| Automotive & transport: 
 Wabco, | 
| Banking: 
 Artesia Bank,
 Banque Diamantaire Anversoise,
 BBL (Banque Brussels Lambert),
 Cera Holding,
 Fortis NV,
 Générale de Banque,
 KBC Bankverzekerin,
 Keytrade,
 Kredietbank NV, | 
| Wood & paper products: 
 Kartogroup,
 Ontex,
 Westerlund, | 
| Beverages: 
 Brasserie de Maredsous, | 
| Chemicals: 
 Agfa-Gevaert Group,
 Ecover,
 Janssen Cilag,
 Solvay,
 Tessenderlo,
 Yplon NV SA, | 
| Consulting: 
 Agrer,
 BDO International B.V.,
 De Bandt, Van Hecke, Lagae & Loesch,
 EPPA, | 
| Construction: 
 Besix,
 CBR,
 Etex Group,
 Koramic, | 
| Retail: 
 Colruyt,
 Delhaize Le Lion Group,
 GIB Group,
 Maxi-Toys, | 
| Electronics: 
 Barco NV, | 
| Energy & water: 
 Air Energy,
 Aquafin,
 Aquinter,
 Belgatom,
 Cegelec,
 Distrigaz,
 Distrihold,
 Electrabel SA,
 Newgaz,
 Powerfin,
 SEE (Wegnez),
 Segeo,
 SODRAEP,
 SPE SA (Société coopérative de Production d'Electricité),
 Synatom,
 Tractebel, | 
| Equipment: 
 Delsey,
 Recticel,
 Soliver,
 Telindus Group,
 Xeikon N.V., | 
| Telecommunications equipment: 
 Telindus Group, | 
| Computer hardware: 
 Xeikon N.V., | 
| State: 
 Public institution, | 
| Holding: 
 Gevaert NV,
 KBC Groupe ex. Almanij NV, | 
| Media: 
 Casterman,
 IPM SA,
 Kinepolis Group,
 Persgroep,
 Rossel,
 Roularta Media Group NV,
 RTBF, | 
| Metals & mining: 
 Bekaert,
 Cumerio,
 Nyrstar,
 Umicore, | 
| Private Person: 
 Arthur Ziegler,
 Claeys (famille),
 De Nolf (famille),
 Frere, Baron Albert,
 Hurbain (famille),
 Lafon (famille),
 Leclerc (famille),
 Mourmans Marcel,
 Mulliez (famille),
 Wittouck et Baron Ullens de Schooten (famille), | 
| Pharmaceuticals: 
 Innogenetics,
 Janssen Pharma,
 Plant Genetic Systems,
 Qualifar,
 UCB Group, | 
| Postal services: 
 Kiala,
 La Poste, | 
| Advertising: 
 Belgian Poster,
 Business Panel, | 
| Restaurants: 
 Quick, | 
| Business services: 
 BIAC (Brussels International Airport Company),
 Creyf Interim, | 
| Services to the people: 
 Echo, | 
| Telecommunications services: 
 Belgacom SA,
 Coditel,
 Mobistar, | 
| Transportation services: 
 DHL Airmays,
 SN Brussels Airlines,
 SNCB (Société Nationale de Chemins de Fer Belges), | 
| Environmental services: 
 Containers Demets,
 Cotrans,
 Europeenne de Services,
 Fabricom,
 RWB,
 Siparbel,
 Soneville,
 Watco,
 WVV, | 
| Financial services: 
 Copeba SA,
 Euroclear Clearance System Ltd,
 Société Générale de Belgique,
 Swift, | 
| Computer services: 
 Babel Technologies,
 Rentabiliweb, | 
| Sport clubs: 
 Wabco,
 DHL Airmays,
 SN Brussels Airlines,
 SNCB (Société Nationale de Chemins de Fer Belges),
 Standard de Liège, | 
| Apparel: 
 C&A, |