On November 15, 1867 the first stock ticker was debuted. Invented by Edward Calahan, the ticker revolutionized the stock market. History explains.
The last mechanical stock ticker debuted in 1960 and was eventually replaced by computerized tickers with electronic displays. A ticker shows a stock’s symbol, how many shares have traded that day and the price per share. It also tells how much the price has changed from the previous day’s closing price and whether it’s an up or down change. A common misconception is that there is one ticker used by everyone. In fact, private data companies run a variety of tickers; each provides information about a select mix of stocks.
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