The Stock Exchange of Thailand (SET) will introduce eight new trading rules on November 16, 2026, impacting various aspects of market activity. These adjustments include changes to tick sizes, placing restrictions on short-selling practices, and implementing fees related to order-to-trade ratios. The SET is also bolstering its oversight of high-frequency trading (HFT) with these new regulations. The changes aim to enhance market stability and fairness for all participants within the Thailand stock market. Further details regarding these specific rule adjustments were not provided in the initial announcement from the Stock Exchange of Thailand. Investors and traders are advised to stay informed as the implementation date approaches. These new measures reflect the Stock Exchange of Thailand’s ongoing efforts to modernize and optimize its trading environment.