HONG KONG, Aug 4 (Reuters) - Hong Kong's de-facto central bank bought HK$14.161 billion ($1.80 billion) 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$129.293 billion on Aug. 5, an HKMA spokeswoman said on Thursday.
($1 = 7.8493 Hong Kong dollars) (Reporting by Donny Kwok; Editing by Chris Reese)
