香港金管局在市场买入94.2亿港元，因港元汇价触及弱方兑换保证。

Core Viewpoint - The Hong Kong Monetary Authority (HKMA) intervened in the market by purchasing HKD 9.42 billion due to the Hong Kong dollar reaching the weak side of the peg [1] Group 1 - The intervention was triggered as the Hong Kong dollar's exchange rate hit the weak end of the currency peg [1] - The amount of HKD 9.42 billion represents a significant action by the HKMA to stabilize the currency [1]