The Stock Exchange of Thailand (, ; abbr. SET) has been the sole stock exchange operator in Thailand since its establishment on 30 April 1975. As of 8 April 2025, with a market capitalization of US$380.19 billion (excluding mai) at an exchange rate of 1 USD = 34.94 THB, it ranks as the 25th largest in the world and the 3rd largest in ASEAN, following the Indonesia Stock Exchange and the Singapore Exchange. In comparison, Thailand ranks 20th in the world and 4th in ASEAN in terms of population.
Its market capitalization is about 69% of Thailand's GDP as of 8 April 2025. In comparison, the market cap of the S&P 500 is roughly 1.5 to 1.7 times the size of the US GDP. Its market capitalization represents about 0.3% of the total market capitalization of all publicly traded stocks worldwide.[1]
The Thai stock market experienced a surge of domestic capital inflows from late 2000s to early 2020s despite signs of sluggish economy.[2] It has undergone a valuation reset.
Overview
It operates 3 equity and 1 derivative exchanges: SET (the main board), mai (