When did Tomas Edison invented universal stock ticker?

Answer 1

Edison did not invent the stock ticker. The credit for that invention goes to Edward Callahan who devised the first stock ticker in 1867 for the Gold and Stock Telegraph Company in New York. Edison developed his Universal Stock Printer in 1871 for Gold and Stock, which soon became a subsidiary of Western Union. Edison's improved stock ticker included his key contributions to printing telegraphy. His most significant improvement was a mechanism that enabled all of the tickers on a line to be synchronized so that they printed the same information. Because the printers frequently fell behind the transmitter by one or more letters, exchange companies had to send employees to the offices where printers were running out of "unison" to reset them. This led to the development of automatic mechanical means to solve the problem.

Answer 2

He invented it in 1869