18.5.4 Definition of "Control"
(1) For purposes of aggregation of Option positions under Rule 18.5.1, control may be presumed by SGX-ST:—
(a) when a person has the power or ability to make investment decisions for an Options trading account; or
(b) when a person has the power or ability to influence directly or indirectly the investment decisions of any person who makes investment decisions for an Options trading account. A person who has such power or ability shall be presumed to control such account unless and until the presumption is rebutted by evidence and a determination to the contrary has been made by SGX-ST.
(2) Control will be presumed in the following circumstances:—
(a) among all parties to a joint account who have authority to act on behalf of the Options trading account;
(b) when a person holds an ownership interest of 10% or more in a Corporation (ownership interest of less than 10% will not preclude aggregation);
(c) when Option trading accounts have common directors or management; or
(d) where a person or entity has the authority to execute transactions in an Options trading account.