WIG, originally an acronym for Warszawski Indeks Giełdowy (Warsaw Stock Exchange Index) is the oldest index of the Warsaw Stock Exchange, introduced on the WSE's first trading session on 16 April 1991. WIG lists 318 companies (as of 5 February 2010). WIG subindices WIG20 WIG30 MWIG40 (before MIDWIG) SWIG80 (before WIRR) TECHWIG WIG-BANKI WIG-BUDOW WIG-INFO WIG-MEDIA WIG-PALIWA WIG-SPOŻY WIG-TELKO WIG-PL External links WIG on the Warsaw Stock Exchange Bloomberg page for WIG:IND European stock market indices Warsaw Stock Exchange 1991 establishments in Poland