The curbs are meant to mitigate potential volatility and provide investors with an opportunity to assess their response to the US tariff barrage that triggered a global market downturn, the exchange said. Thailand was hit by a tariff of 36%, among the highest rates in the region. The Southeast Asian country’s trade surplus with the US totalled US$45 billion ($60.64 billion) last year.
Thailand will temporarily ban short selling of stocks and tighten other share trading rules to curb volatility as the fallout from the US’s sweeping tariffs roil global markets.
The ban on short selling of all securities, except for market makers, and a narrower band for stock movements will be effective from Tuesday and no longer than April 11, the Stock Exchange of Thailand said in a statement on Monday after its board held a special meeting. Financial markets in Thailand were closed on Monday for a local holiday.

