HONG KONG, Aug 2 (Reuters) - Hong Kong's de-facto central bank bought HK$6.272 billion ($799 million) from the market in New York trading hours to stop the local currency weakening and breaking its peg to the U.S. dollar.
The Hong Kong dollar is pegged to a tight band of between 7.75 and 7.85 versus the U.S. dollar.
The aggregate balance, the key gauge of cash in the banking system, will decrease to HK$144.75 billion on Aug. 3, an HKMA spokeswoman said on Tuesday.
($1 = 7.8499 Hong Kong dollars) (Reporting by Donny Kwok; Editing by xxxx)
