A transplant from Boston to Brooklyn, Edward Calahan invented what NYSE-related staple in 1867?

The first stock price ticker system was created by Edward Calahan in 1863, but it took him 4 years to officially unveil it in NYC on November 15, 1867. When it first started out, it used Morse code symbols to convey its messages, but two years after Calahan's invention, Thomas Edison invented the Universal Stock Ticker which used alphanumeric characters.

Asked by Tom Cohen · Last updated 5 years ago · 2.4K views