Other forms: tickers
A device that transmits and displays stock prices is called a ticker. The narrow strip of paper on which this information was printed prior to the 1960s was called ticker tape.
The financial districts of cities once had masses of used ticker tape—in old movies and newsreels, you can see ticker tape being tossed from windows as confetti during parades. Today stock tickers transmit information electronically. The name ticker comes from the sound the original machines made, similar to a ticking clock (something that, along with your beating heart, can be called a ticker colloquially).