TOKYO, Oct 31 (Reuters) - Japanese government bonds were steady on Tuesday, with the superlong end edging higher and the yield curve slightly flattening, as the market mulled over a Bank of Japan policymaker’s idea that the central bank should guide 15-year bond yields lower.
The benchmark 10-year cash JGB yield was flat at 0.065 percent, while the 10-year JGB futures contract ended up 0.03 point at 150.47.
The 30-year JGB yield as well as the 40-year JGB yield both inched down half a basis point to 0.865 percent and 1.065 percent, respectively.
The Bank of Japan kept monetary policy steady as expected and roughly maintained its ambitious price forecasts on Tuesday, pointing to signs of growing strength in the economy.
Board newcomer Goushi Kataoka dissented to the decision to stand pat. While he made no explicit proposal on additional easing, he said the BOJ should buy government bonds, so 15-year yields “remain at less than 0.2 percent.”
The yield on the 15-year government bond - which traders rarely quote as a benchmark - stood around 0.307 percent on Tuesday.
“I guess his thinking is that the yield curve should be flatter in order to achieve 2 percent inflation,” said Naomi Muguruma, senior market economist at Mitsubishi UFJ Morgan Stanley Securities.
“Maybe he thinks that if the superlong end of the curve declines, that would stimulate corporate investment activities?” she said. “But he might have a different angle in mind.”
Kataoka’s opinion is unlikely to be in the majority at least as long as BOJ Governor Haruhiko Kuroda remains at the central bank’s helm, she added.
Kuroda is scheduled to hold a news conference at 0630 GMT to explain the BOJ’s policy decision. (Reporting by Tokyo markets team; Editing by Subhranshu Sahu)