During 1956, a stock exchange (San Francisco Stock and Bond Exchange) and an oil exchange (Los Angeles Oil Exchange) merged with each other, forming a new identity known as Pacific Coast Stock Exchange. Since it was a merger of both exchanges, hence the trading buildings continued its operations in both places. in 1973, it changed to Pacific Stock Exchange and resumed trading in 1976.
It was the first exchange to get demutualized in 1999. Both of its operating buildings were closed in 2001 and 2002 respectively. In 2005, pacific exchange was purchased by the owner of Archipelago Holdings and merged its operation with NYSE in 2006.
Today no trading is done under the name of Pacific Exchange and it takes place through NYSE Arca.
Pacific Exchange ran its operations from 1931 to 1986. All the Pacific Exchange’s Equity & Option business currently conducted entirely through the NYSE Arca, a platform and a communication network that works electronically. Hence Pacific Exchange equities and option is now NYSE Arca equities and options.