Philadelphia Stock Exchange that the tax was illegal, and the PHLX moved its trading floor back to its headquarters in the city. In 1981, the exchange moved to 19th and Market, where it stayed until 2017 when it moved to its current location in the newly built FMC Tower. The exchange merged with the Baltimore Stock Exchange in 1949. The exchange was then named the Philadelphia-Baltimore Stock Exchange. The Baltimore Stock Exchange then migrated out of its Baltimore Stock Exchange Building, later renamed the Totman Building, to a new home base in Philadelphia. The exchange merged with the Washington Stock Exchange in 1954.
Mexican Stock Exchange in Mexico. On 19 April 1990, the Centro Bursátil was finished on Paseo de la Reforma, turning the Stock Exchange Centre into the heart of the financial district of Mexico City. Five years later, the BMV completely modernised the centre, introducing a completely electronic system (BMV-SENTRA) which was phased into the workings of the exchange, becoming fully operational by 1999. In 2001, Citigroup became the first foreign company to begin trading in the BMV, opening the door to many new companies to do the same, especially from Central and South America. The same year, the Securities' Market Law was reformed