The Pacific Exchange was, until 2001, a regional stock exchange with a main exchange floor and building in San Francisco, California, USA and a branch in Los Angeles, California, USA. Its history began with the founding of the San Francisco Stock and Bond Exchange in 1882 and the Los Angeles Oil Exchange in 1889. In 1957, the two exchanges merged to create the Pacific Coast Stock Exchange, though trading floors were maintained in both cities. In 1973, The Exchange was renamed the Pacific Stock Exchange and it began trading options three years later in 1976.