November 15, 1863: the first mechanical stock ticker made its debut. It was used to display the prices of stocks. The mechanical stock ticker was invented by Edward A. Calahan, who had previously also created a multiplex telegraph system. Before the mechanical stock ticker, stock prices had to be delivered by messengers, so they were not as accurate due to prices changing every few seconds. Stock tickers enabled the delivery of stock prices that were accurate to the minute, and this enhanced accuracy helped to increase the invention’s popularity. Mechanical stock tickers were eventually replaced with electronic stock tickers, which were displayed on special monitors, which in turn were quickly replaced by online tickers, accessible on any computer or mobile device.

Other events:

November 19, 1863: Abraham Lincoln gave the Gettysburg Address 

November 18, 1928: Mickey Mouse made his debut in “Steamboat Willie” 

November 15, 1777:the Second Constitutional congress approved the Articles of Confederation.