Philadelphia Stock Exchange 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 referred to as the Philadelphia Board of Brokers. In 1875, the Board of Brokers changed its name to the Philadelphia Stock Exchange. The exchange merged with the Baltimore Stock Exchange in 1949 and was named the Philadelphia-Baltimore Stock Exchange. It merged with the Washington Stock Exchange in 1954, becoming known as the Philadelphia-Baltimore-Washington Stock
Prague Stock Exchange and Central Securities Depository Prague (CSD Prague). PXE was founded in 2007 and is a trading platform for dealing in electricity for the Czech Republic, Slovakia and Hungary. CSD Prague has the principal position in the settlement of securities trades on the Czech capital market, maintains the central register for dematerialized securities issued in the Czech Republic, and assigns international securities identification numbers (ISIN) to investment instruments. PSE is a member of the CEE Stock Exchange Group (CEESEG), which also includes the Vienna Stock Exchange (Wiener Börse). Prague Stock Exchange Prague Stock Exchange (PSE) is the largest and oldest securities