The stock ticker brought the market’s heartbeat into every brokerage. Invented by Edward Calahan in 1867 and improved by a young Thomas Edison, it received telegraph signals and printed abbreviated company symbols and prices onto a thin paper ribbon, the “ticker tape,” named for the sound it made. Clerks read the unspooling tape to follow trades minute by minute. The leftover paper found a second life: New Yorkers threw it from windows to celebrate heroes, inventing the ticker-tape parade. Electronic quote terminals and digital data feeds, faster and silent, displaced the paper tickers through the 1960s and 70s.
Worth remembering
- Thomas Edison's improved 'Universal Stock Printer' funded his early career as an inventor.
- Spent tape thrown from Manhattan windows created the original ticker-tape parade in 1886.
Sources
A graveyard tradition: leave a stone to show you came, and remembered.