If the stock exchange finds abnormal fluctuations in the share price or trading volume of listed issuers through market monitoring, or the media releases reports that may affect the share price or trading volume of listed companies, or there are related rumors in the market, then the stock exchange will contact listed companies in order to maintain fair and orderly market. A listed company must respond to this immediately, fulfill its continuous disclosure obligations under the Listing Rules, and publish relevant information in a timely manner, so as to avoid false information on its shares or any inside information that should be disclosed according to the provisions of Part XIVA of the Securities and Futures Ordinance, and ensure that such information can be released fairly. If a listed company is unaware of any events or developments that will or may lead to abnormal fluctuations in its share price or trading volume, it shall make an announcement through Disclosure Easy and its website as soon as possible to explain the situation. If the listed company publishes relevant announcements in time, there is no need to suspend trading or suspend trading for a short time.
If circumstances require, for example, it is found or suspected that the change of stock price or trading volume is caused by the disclosure of some inside information that should be disclosed according to Part XIV of the Securities and Futures Ordinance, the listed company shall immediately publish relevant information or any inside information that should be disclosed according to Part XIV of the Securities and Futures Ordinance. Otherwise, the shares of listed companies may be temporarily suspended or suspended by the stock exchange, and will resume trading after the announcement.
"Changes in share price or trading volume" of a listed company refers to the abnormal performance of the share price and/or trading volume of a listed company without obvious reasons. For example, the market fell, but the company's share price rose sharply, or the turnover suddenly increased. As to whether the fluctuation range of stock price or trading volume is "abnormal", the Stock Exchange will make a judgment with reference to the past performance of the stock concerned, or the performance of other stocks in the industry to which the stock belongs, and the overall market situation.