BofAS has given a Buy rating for HKEX due to its impressive 27% year-on-year increase in net profit, which reached a record high of HKD5.2 billion in the first quarter. This strong performance was driven by a significant rise in turnover and trading fees, alongside effective cost control. The broker believes HKEX is the best option for benefiting from a rebound in the Hong Kong market, with a target price of HKD520.