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
Frankfurt Stock Exchange in place for the trading venues Xetra and Börse Frankfurt. These include volatility interruption, market order interruption, and liquidity interruption measures. The origins of the Frankfurt Stock Exchange go back to medieval trade fairs in the 11th century. By the 16th century Frankfurt developed into a wealthy and busy city with an economy based on trade and financial services. In 1585 a bourse was established to set up fixed currency exchange rates, which is considered to mark the 'birth' of the stock exchange. During the following centuries Frankfurt developed into one of the world's first stock exchanges - next to