• Thai SET revised regulations to enhance supervision, covering short selling, high-frequency trading (HFT), disclosure of investors with inappropriate trading behavior.
• Document dated 21 June 2024, received from Thai SEC 13 September 2024.

Revisions

• Criteria for market capitalization increased; the average monthly turnover requirement has been specified to better align with current trading sizes and conditions.
• Implemented uptick rule where short selling must be priced higher than the last trade for all securities; exemption for registered market makers to aid in liquidity management.
• Thai SET will disclose information about investors with inappropriate trading behavior to member companies, enabling them to effectively monitor, manage these investors.

Effectiveness

• These regulations are effective from 1 July, 2024, except for the qualifications for stocks eligible for short selling, which are effective from 21 June 2024.