The New Zealand dollar was under pressure in early trading after being sold-off overnight in London.
The kiwi was at 83.93 US cents at 8am, little changed from 83.94 cents at 5.25pm on Tuesday. But it slumped from 84.19 cents to about 83.75 cents before recovering in overnight trading.
There appeared to have been a large kiwi-euro flow in London trading, Tim Kelleher, head of institutional FX sales at ASB Institutional said.
"Kiwi has failed three or four times now above 84.25 cents so it is looking a bit heavy," he said.
Traders ultimately decided that US Federal Reserve chairman Ben Bernanke did not say anything particularly new in a speech yesterday.