The New Zealand dollar rose to a six-and-a-half week high against its trans-Tasman counterpart after a slump in Chinese equities markets weighed more heavily on the currency of Australia, which counts China as its biggest export market.
The kiwi rose as high as 90.91 Australian cents, and was trading at 90.71 cents at 8am in Wellington from 90.36 cents yesterday.
It gained to 66.06 US cents from 65.88 cents yesterday.
The Chicago Options Board Exchange's Volatility Index, known as Wall Street's 'fear gauge', rose to a two-week high as stocks fell on Wall Street and in Europe after an 8.5 per cent slump in China's Shanghai Composite index yesterday.
Read more: Shanghai shares dive 8pc