The spectre of another speculative attack on the peg has prompted the Hong Kong Monetary Authority to make more information available on liquidity in the interbank market.
The authority has decided to issue statements twice a day detailing aggregate balances in accounts it holds on behalf of banks for foreign exchange dealings for the coming two days.
The aggregate balance shows the flow of funds into or out of the Hong Kong dollar and is the best indicator of Hong Kong dollar liquidity.
The authority said increased transparency would help smooth out volatility in interbank rates, by giving dealers two day's worth of information about liquidity in the system.
Authority chief executive Joseph Yam Chi-kwong said the change would discourage speculators.
'The more transparency in the interbank market, the more difficult for currency speculators to attack the dollar,' he said.