Under rule 9.01, the Exchange may direct a trading halt or suspend dealings in an issuer's securities regardless of whether or not the issuer has requested the same and may do so in any circumstances, including:—

(1) where the issuer goes into receivership or liquidation; or
(2) where the Exchange considers there are insufficient securities in the hands of the public (see rule 11.23); or
(3) where the Exchange considers that the issuer does not carry on a business as required under rule 17.26; or
(4) where the Exchange considers that the issuer or its business is no longer suitable for listing; or
(5) [Repealed 1 August 2018]
(6) where the integrity and reputation of the market has been or may be impaired by dealings in the issuer's securities; or
(7) where there are unexplained unusual movements in the price or trading volume of the issuer's listed securities or where a false market for the trading of the issuer's securities has or may have developed and the issuer's authorised representative cannot immediately be contacted to confirm that the issuer is not aware of any matter or development that is or may be relevant to the unusual price movement or trading volume of such securities or the development of a false market, or where the issuer delays in issuing an announcement in the form required under rule 17.11; or
(8) where there is uneven dissemination or leakage of inside information in the market giving rise to an unusual movement in the price or trading volume of the issuer's listed securities.

1 The Exchange will not hesitate to direct a trading halt or suspend dealings where it considers that improper use is being made of inside information, whether by core connected persons of the issuer or otherwise. It may require a detailed explanation from an issuer as to who may have had access to unpublished information, and why security had not been properly maintained. If it considers the result of its enquiries justify, it may publish its findings. It places great importance on the responsibility of the directors of an issuer to ensure not only proper security with regard to inside information, but also that relevant information is disclosed in a proper and equitable manner, in the interests of the market as a whole, and not to the benefit of a selected group or individual.
2 Where the Exchange believes that an issuer or its advisers have permitted inside information regarding the issue of new securities to leak before its announcement, it will not normally consider an application for the listing of those securities.
3 Under the Statutory Rules, the Exchange will notify the Commission of trading halts, suspensions and restorations of dealings. In addition, the Exchange will halt or suspend dealings if the Commission directs under the Statutory Rules.