Philadelphia Stock Exchange options, and a number of FX options. The PHLX has more than 16% of United States market share in exchange-listed stock and ETF options trading. The exchange's normal trading sessions are from 9:30 am to 4:00 pm on all days of the week except Saturdays, Sundays and holidays declared by the exchange in advance. Philadelphia Stock Exchange Philadelphia Stock Exchange (PHLX), now known as NASDAQ OMX PHLX, is the oldest stock exchange in the United States. It is now owned by The NASDAQ OMX Group. Founded in 1790, the exchange was originally named the Board of Brokers of Philadelphia, also
American Mining and Stock Exchange American Mining and Stock Exchange The American Mining and Stock Exchange was a commodities and stock exchange in New York City. In 1877 it absorbed the competing New-York Open Gold and Stock Exchange. The New York Mining Stock Exchange absorbed the members of the American Mining and Stock Exchange, which had been operating for around fifteen months, on July 26, 1877. The American Mining and Stock Exchange began operations around May 1876. Around early 1877, there was an attempt to consolidate the New-York Open Gold and Stock Exchange with the American Mining and Stock Exchange, both of which were next