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
Chicago Stock Exchange 2014, bringing the number of active stock exchanges in the United States to 11. Wrote "Bloomberg", that left "just one public exchange, Chicago Stock Exchange Inc., that isn't owned Bats, Nasdaq OMX Group or IntercontinentalExchange Group Inc." On 5 February 2016, Chongqing Casin Enterprise Group, a Chinese led investment group, entered into a definitive agreement to acquire CHX Holdings, Inc., the parent corporation of the Chicago Stock Exchange, for an undisclosed amount, which is subject to regulatory approvals. The privately held Casin Group was founded in 1997. A minority ownership position is held by Bank of America, E-Trade, Goldman Sachs