[The Stock Exchange of Thailand Revises Short Selling and High-Frequency Trading Rules] October 10th: The Stock Exchange of Thailand will implement revised rules from November 16, including adjustments to short selling and high-frequency trading, in order to seek to improve market stability, liquidity and investor confidence. The exchange will allow stocks priced between 5 and 50 baht to be traded in smaller price ticks, a move aimed at narrowing bid-ask spreads and reducing transaction costs. The exchange will also limit short selling to more liquid securities, including SET100 index components, securities underlying individual stock futures, depositary receipts and ETFs. Under the new rules, investors will be allowed to short-sell securities at a price equal to or higher than the last traded price. The Stock Exchange of Thailand will also charge additional fees for accounts that submit large orders but have relatively few actual trades. In order to lower the trading threshold, the exchange will cancel the dynamic price fluctuation restrictions on individual securities; relax restrictions on high-frequency traders' buying and selling targets; and cancel the minimum pending order time requirement to improve order management efficiency. The exchange will also extend morning trading hours for derivative warrants and ETFs linked to foreign securities from November 16. Trading will begin at 8 a.m., two hours earlier than currently, with closing times remaining unchanged.