The Globe and Mail reports in its Friday edition that investors in Japan's yen have jumped at what they see as the clearest sign yet from the country's monetary authorities that the end of ultralow interest rates is fast approaching, opening the floodgates to a rush of buyers. A Reuters dispatch to The Globe says that the yen surged over 2 per cent to a multimonth high against the U.S. dollar on Thursday after Bank of Japan Governor Kazuo Ueda said policy management would "become even more challenging from the year-end and heading into next year," and flagged several options for what could come next. On Wednesday, deputy governor Ryozo Himino had discussed the potential impact an exit from ultraloose monetary policy could have on the economy. Their combined comments lit a fire under the battered yen, which was set for its biggest one-day gain versus the dollar since January. Five-year Japanese bond yields had their most aggressive sell-off in a decade. Just four weeks ago, the yen languished around the 150 mark, near its weakest in 30 years, and markets were on edge over potential central bank intervention to prop up the currency. The December meeting is seen by some as a heads-up for the January meeting.