No, la.
Most banks, or security companys provided 15 minutes delay, like HKEx, Yahoo
If you want real time quotation, like BOCHK, you can have 500 time FREE Real time enquiry ( I used for over 1 year, and only total have $50 in all accounts in BOC), if you buy / sell through them, the enquiry time will increase. But you must have stock account with them.
Other banks, like HSBC, Hang Sang, will have similar offer.
Other Security Company will have monthly fee around $180.
So I think Banks' offer is enough.