Philadelphia Stock Exchange that the tax was illegal, and the PHLX moved its trading floor back to its headquarters in the city. In 1981, the exchange moved to 19th and Market, where it stayed until 2017 when it moved to its current location in the newly built FMC Tower. The exchange merged with the Baltimore Stock Exchange in 1949. The exchange was then named the Philadelphia-Baltimore Stock Exchange. The Baltimore Stock Exchange then migrated out of its Baltimore Stock Exchange Building, later renamed the Totman Building, to a new home base in Philadelphia. The exchange merged with the Washington Stock Exchange in 1954.
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