The KOSPI, or Korea Composite Stock Price Index, is the main stock market index in South Korea. It tracks the performance of all common stocks listed on the Korea Exchange, providing a comprehensive view of the country's stock market. The index is calculated based on the market capitalization of the listed companies, reflecting their overall value. Established in 1983, the KOSPI serves as a key indicator for investors and analysts to gauge the health of the South Korean economy. It includes major companies from various sectors, such as technology, finance, and manufacturing, making it an essential tool for understanding market trends.