There aren't very many Stock Market vacancies in Hongkong; the current count is just 4. Have you tried neighbouring regions? Two main themes for Stock Market vacancies include Business Intelligence and Financial Data Analysis. If you're on familiar terms with fields like Sell Side, Buy Side and Electronic Trading, you're a shoo-in for vacancies like this.
Those seeking internship vacancies should maybe try related fields as employers are currently only recruiting experienced applicants. Among the companies who look for Stock Market employees, there are currently no startups. While you're here, you can check out interesting information like recruiting trends, and see the quantity of vacancies on offer.