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
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