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
Chicago Stock Exchange Chicago Stock Exchange The Chicago Stock Exchange (CHX) is a stock exchange in Chicago, Illinois. The exchange is a national securities exchange and Self-Regulatory Organization, which operates under the oversight of the U.S. Securities and Exchange Commission (SEC). The Chicago Stock Exchange is currently located at 440 South LaSalle Street (FOUR40). Founded on March 21, 1882, in 1949, the Chicago Stock Exchange merged with the regional stock exchanges St. Louis Stock Exchange, Cleveland Stock Exchange and Minneapolis-St. Paul Stock Exchange to form the Midwest Stock Exchange. In 1959, the New Orleans Stock Exchange became part of the Midwest Stock Exchange,