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 its Nasdaq Nordic markets. As of October 2014, the exchange operated under the legal name "Nasdaq OMX Stockholm AB" (renamed "Nasdaq Stockholm AB" in 2015). Prior to the introduction of electronic trading on 1 June 1990, all trading was conducted on the floor of the Stockholm Stock Exchange Building. Its normal trading sessions are from 09:00am to 05:30pm on all days of the week except Saturdays, Sundays and holidays declared by the Exchange in advance. Stockholm Stock Exchange The Stockholm Stock Exchange (), operating under the name Nasdaq Stockholm, is a stock exchange located in Frihamnen, Stockholm, Sweden. Founded in