Title: Taiwan Stock Exchange Corporation Rules Governing Implementation of the Stock Market Surveillance System(2005.03.22)
Article 4   When abnormal trading as specified in the preceding Article is likely to seriously affect market trading, the Exchange shall make a public announcement to the Market and may take the measures listed below:
1. Conduct trade matching for the securities with manually controlled trade matching terminals.
2. Restrict the amount of the securities that securities firms can buy and sell.
3. Instruct securities brokers to precollect buy-side payment or sell-side securities up to a certain percentage from those who place large numbers of orders with securities brokers for securities that are being traded abnormally.
4. Report to and obtain the permission of the Competent Authority to suspend the trading of such securities for a prescribed period.
The Exchange shall draft guidelines for the standards, manner, and duration of the measures in the preceding paragraph as well as the standards for abnormal trading and manner of public announcement in Article 3. These guidelines shall take effect after having been reported to the competent authority and approved for recordation.
When it is deemed that abnormal trading of securities has occurred and has affected the security of market settlement, the measures listed in paragraph 1 or other measures adopted by the resolution of the Surveillance Operations Oversight Committee may prevail.