X @U.S. Securities and Exchange Commission

For week 2 of our Freedom 250 campaign, we’re highlighting another transformational milestone in the history of our capital markets: the invention of the stock ticker.A quick history lesson below ⬇️📚Before stock tickers, brokers relied on messengers running handwritten slips of paper between exchanges and brokerage offices. In 1867, Edward Calahan created a system of telegraphy that converted stock-price signals into stamped codes on ticker tape, significantly speeding up the transfer of information. This n ...