SGX-ST may conduct an investigation if:—
(1) the investigation involves a possible breach of the Securities and Futures Act, Securities and Futures Regulations, Rules, or Directives;
(2) SGX-ST receives a written complaint involving a Trading Member, Director, Trading Representative, Officer, employee or agent;
(3) there is a dispute between Trading Members on a trading matter; or
(4) in SGX-ST's opinion, the circumstances warrant.