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
Boston Stock Exchange Boston Stock Exchange The Boston Stock Exchange (now NASDAQ OMX BX, formerly "BSE") is a regional stock exchange located in Boston, Massachusetts. The third-oldest stock exchange in the United States, it was founded in 1834. On October 2, 2007, NASDAQ agreed to acquire BSE for $61 million. The Boston Stock Exchange was founded in 1834. In 2002, the BSE co-founded with the Montreal Exchange (MX), a derivatives exchange and Interactive Brokers, a discount brokerage, the Boston Options Exchange (BOX), an automated equity options exchange. In 2007, controlling interest in the BOX was sold to MX by BSE and IB. In