Wall Street investment bank Goldman Sachs has cast a vote of confidence in Hong Kong’s financial future by reaffirming its “buy rating” on Hong Kong Exchanges and Clearing (HKEX), as Beijing ramps up policy support to cement the city’s status as an international financial centre. “We see multiple tailwinds to ADT [average daily turnover] and revenue growth” in the second half of this year, analysts Thomas Wang and Simone Chen wrote in a research note on Wednesday. The move comes amid weak share...