A stock ticker is a record of the price of securities listed on a stock exchange, continuously updated throughout a trading session. Stock prices will ‘tick’ up and down throughout the day.
The ticks used to be printed continuously on a strip of ticker tape from a ticker machine, but you’ll now see them scrolling along the bottom of financial news channels or on financial websites. The stocks are generally identified by a ticker symbol, which is a unique, short, identifier code for each stock.