The New Zealand dollar jumped to a five-week high against the yen after the Japanese central bank unexpectedly expanded its monetary stimulus programme in an attempt to boost growth and inflation in the world's third-largest economy. The kiwi touched 88.03 yen over the weekend, its highest since Sept. 25. The local currency was trading at 87.59 yen at 8am in Wellington, from 85.77 yen at 5pm on Friday. The New Zealand dollar was trading at 77.64 US cents from 77.80 cents at the New York close and 78.41 cents on Friday. The yen plunged and the Nikkei share index jumped after the Bank of Japan announced on Friday it ... (full story)