The total assets of the Exchange Fund amounted to $2.2279 trillion on June 30, up $35.1 billion on the end of May.

Foreign currency assets swelled by $31.6 billion and Hong Kong dollar assets rose $3.5 billion.

The Monetary Authority today said the rise in foreign currency assets was mainly due to increases in unsettled purchases of securities and certificates of indebtedness. The rise in Hong Kong dollar assets was mainly due to valuation gains on Hong Kong equities.

The currency board account shows the monetary base at the end of June was $1.0237 trillion, showing a rise of 0.3% on the end of May. The climb was mainly due to an increase in certificates of indebtedness.