a place where shares in companies are bought and sold; all of the business activity involved in doing this the London Stock Exchange to lose money on the stock exchange See related entries: EconomyExtra examples Bahrain’s stock exchange closed up 10.09 points today at 2160.09. Both companies are listed on the Stock Exchange. The club may be floated on the stock exchange. The company’s shares will be traded on the Stock Exchange. The stock exchange rallied in response to the announcement of massive American investment.