Dollar/yen hits 156.8
Bank of Japan leaves short-term rates near zero
(Updates prices and headline at 0830 GMT)
The yen rose sharply after hitting its weakest level in three decades against the U.S. dollar with markets on edge about possible intervention after the Bank of Japan kept interest rates on hold on Friday.
In a volatile trading day, the yen JPY=EBS rose suddenly to 154.97, after hitting minutes earlier its lowest level of 156.82 per dollar since 1990.
The sudden jump left traders on high alert for signs of intervention.
After a two-day meeting, the Bank of Japan left its short-term interest rate target at 0-0.1% on Friday and made small upward adjustments in its inflation forecast. Investors had not expected a policy shift but took the decision as confirmation that only small moves lie ahead.
BOJ Governor Kazuo Ueda said the weak yen so far has not had a big impact on the inflation trend.
The yen also slid to its weakest level in almost 16 years against the euro, at 168.23 EURJPY=R , and its softest in nearly a decade versus the Australian dollar AUDJPY=R .
"There is little indication the BOJ is considering raising rates in the near term," said Prashant Newnaha, senior Asia-Pacific rates strategist at TD Securities in Singapore.
"Today's ... meeting greenlights the yen carry trade and could see USD/JPY accelerate towards 160-161 over coming weeks."
INTERVENTION WATCH The yen's 11% drop against the dollar this year is the largest fall of any G10 currency, driven mostly by the wide gap between U.S. and Japanese government bond yields, which is more than 375 basis points for the 10-year tenor JP10US10=RR .
That encourages borrowing and short-selling yen in order to earn better interest, or carry, in dollars and other currencies.
The gap could widen even further, and exacerbate pressure on the yen, if the Federal Reserve's preferred inflation measure - the U.S. core PCE price index - rises in data due at 1230 GMT.
"If dollar/yen keeps going up, (intervention) wouldn't surprise ... given you've had a lot of yen weakness and a lot of very public pushback from Japanese officials," said Joe Capurso, a strategist at the Commonwealth Bank of Australia.
"The market's not really taken it seriously, so at some point they'll draw a line in the sand and say enough is enough."
The yen has slipped past levels at 152 and 155 to the dollar where traders had been wary of intervention. Japanese Finance Minister Shunichi Suzuki said on Friday he was closely watching currency moves and was prepared to take full steps in response.
Still, traders figure there is not much Tokyo can do to reverse the currency's slide while interest rates and momentum are heavily skewed against it.
Elsewhere, yen selling lifted the Australian and New Zealand dollars, and the Aussie AUD=D3 is set for its largest weekly gain in five months after a surprisingly hot inflation print.
For the week it has gained 2% and it rose to a two-week high on Friday, last up 0.5% to 0.6552. The New Zealand dollar NZD=D3 is up 1.3% this week to $0.5966, its biggest weekly gain in almost two months.
Sterling GBP=D3 and the euro EUR=EBS were steady, holding gains made on Thursday when data showed the U.S. had grown at its slowest pace in nearly two years.
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World FX rates https://tmsnrt.rs/2RBWI5E
BOJ operations, yields and yen https://tmsnrt.rs/3Uz9OmY
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