SEC Thailand Accelerates Capital Market Investigations and Proposes Short Selling Reforms

According to a report by Prachachat Business on September 11, 2026, the Securities and Exchange Commission (SEC) of Thailand is implementing measures to expedite the resolution of capital market cases. The regulator has successfully reduced the average investigation period from two years and six months to one year and five months. The SEC aims to ensure that the majority of cases are resolved within a two-year timeframe by early 2027.

In addition to procedural efficiency, the SEC is pursuing legislative amendments to strengthen its oversight of short selling. These proposed changes aim to grant the regulator direct authority over individual investors involved in short selling and facilitate collaborative investigations into serious market offenses. Furthermore, the SEC is preparing to adjust trading criteria, including the implementation of an 'Uptick Rule.'

For residents and expatriates involved in the Thai financial markets, these developments signal a more proactive regulatory environment aimed at increasing market transparency and accountability. While these measures are intended to stabilize the capital market, the specific details regarding the implementation of the new short selling oversight powers and the exact timeline for the updated trading rules remain subject to further legislative progress. Investors should monitor official SEC announcements for finalized regulatory changes.