Korea Exchange is the sole securities exchange operator in South Korea. It is headquartered in Busan

Busan

Busan , formerly spelled Pusan is South Korea's second largest metropolis after Seoul, with a population of around 3.6 million. The Metropolitan area population is 4,399,515 as of 2010. It is the largest port city in South Korea and the fifth largest port in the world...

, and has an office for cash markets and market oversight in Seoul

Seoul

Seoul , officially the Seoul Special City, is the capital and largest metropolis of South Korea. A megacity with a population of over 10 million, it is the largest city proper in the OECD developed world...

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The Korea Exchange was created through the integration of Korea Stock Exchange, Korea Futures Exchange and KOSDAQ Stock Market under the Korea Stock & Futures Exchange Act. The securities and derivatives markets of former exchanges are now business divisions of Korea Exchange: the Stock Market Division, KOSDAQ Market Division and Derivatives Market Division.