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
Stockholm Stock Exchange Stockholm Stock Exchange The Stockholm Stock Exchange (), operating under the name Nasdaq Stockholm, is a stock exchange located in Frihamnen, Stockholm, Sweden. Founded in 1863, it has become the primary securities exchange of the Nordic countries. More than 300 companies have been listed for trading. The Stockholm Stock Exchange was acquired by futures exchange OM in 1998. After OM merged with the Helsinki Stock Exchange to form what is now OMX in 2003, the Stockholm and Helsinki exchanges' operations were merged. Since 2008, the Stockholm Stock Exchange has been part of Nasdaq, Inc. (formerly called "Nasdaq OMX Group") and