From Longman Business Dictionaryadvancerad‧van‧cer /ədˈvɑːnsə-ˈvænsər/ noun [countable] FINANCE a share that increases in value on a particular day of trading on a stockmarketSYNADVANCING SHAREAdvancers beat decliners on the Big Board, 922 to 831 (=shares in 922 companies rose and shares in 831 companies fell). → compare decliner