What rules must be applied to Primary Market Maker?
I. Provide continuous quotes for the assigned option series in an option class for which it is registered as a Primary Market Maker for such minimum number of options contracts and with such maximum bid and offer spread as may be specified in its appointment letter.
II. Primary Market Makers must respond to no less than a certain percentage of quote requests and provide continuous quotes for no less than a certain percentage of trading hours as may, in each case, be specified in its appointment letter.
III. Each Primary Market Maker must be available to respond to quote requests and provide continuous quotes on specific trading days during the period for which its permit is granted, unless specifically exempted by the SEHK.
IV. The SEHK may from time to time prescribe additional requirements, obligations, restrictions and conditions which must be complied with by a Primary Market Maker, by giving written notice to it to amend its appointment letter.