From Longman Business Dictionaryunlisted stockunˈlisted ˌstock (also unquoted stock British English) [countable, uncountable]FINANCE one of the stocks that is not traded on a main stockmarket, but rather on the OVER-THE-COUNTER MARKET (=computer-based trading in shares of newer and smaller companies)Unlisted stocks were unable to match the gains posted by New York Stock Exchange issues yesterday. → stock