Leaving the idea of expansion into Europe, Western Union took up the expansion of services in the U.S. market. Another invention of Western Union - time synchronization. In October 2006 the company made an initial public offering of shares on the New York Stock Exchange, becoming independent from First Data company. In 1849, Selden and Sibley, the founders of the future Western Union, created the New York State Printing Telegraph Company. Number of active holders of "Golden Card" of Western Union amounted to 9.5 million people worldwide.