Total assets held by the Exchange Fund were HK$985.9 billion at October 31, down HK$6.4 billion from a month earlier, according to the Hong Kong Monetary Authority. Hong Kong dollar assets in the fund fell HK$100 million mainly due to the Government taking cash from the fund for treasury use. Foreign assets dropped HK$6.3 billion, as a result of selling foreign currencies for Hong Kong dollars. Hong Kong's monetary base was HK$225.7 billion at the end of October. This was 1.2 per cent down on the previous month.