The Market Status informs through quick and easy-to-read notices on incidents affecting the Equity markets as well as Indices and financial systems operated by BME.. If an issue occurs, the message "TRADING" will change to "MARKET ISSUE" to reflect that a market event has occurred.By clicking on the Issue of the published alert it will be possible to access the information and intraday updates Stock exchange - definition of stock exchange by The Free ... Define stock exchange. stock exchange synonyms, stock exchange pronunciation, stock exchange translation, English dictionary definition of stock exchange. n. 1. A place or system in which stocks, bonds, or other securities are bought and sold. Related to stock exchange: stock market. stock exchange. n. 1. A place or system in which stocks