Katayama warns on yen volatility as intervention data looms at 1900 JST

Japanese Finance Minister Katayama said decisive action can be taken against yen volatility, declining to confirm intervention history, as the MOF prepares to release intervention data covering late April to May 27 at 1900 JST:1000 GMT0600 US Eastern time Summary:Finance Minister Katayama said at a regular press conference that decisive action can be taken when there is volatility or speculative movement in foreign exchange markets, per ReutersKatayama declined to confirm or deny whether intervention has been conducted, in line with standard MOF procedure, per ReutersThe yen was approaching the 160-per-dollar level at the time of the press conference, per ReutersThe Ministry of Finance is scheduled to release intervention data at 1900 JST Friday covering the period from April 28 to May 27, per MOF scheduleSources previously told Reuters that Japan intervened in the currency market on multiple occasions since late April, with Bloomberg analysis of BOJ accounts suggesting up to ¥10 trillion was deployedThe intervention data release follows a softer-than-expected Tokyo core CPI print for May, which came in at 1.3% year-on-year against a 1.5% forecast, adding downward pressure on the yenJapanese Finance Minister Satsuki Katayama reiterated Friday that Tokyo stands ready to take decisive action against excessive yen volatility, keeping the market on notice as the currency approached the closely watched 160-per-dollar threshold and official intervention data prepared to drop later in the day.Speaking at a regular press conference, Katayama said the government has long maintained that speculative or disorderly movement in foreign exchange markets can be met with forceful action. She declined to confirm or deny whether intervention had taken place in recent weeks, adhering to the standard MOF position of neither confirming nor commenting on specific operations ahead of official data releases.The timing of the remarks was pointed. The yen was pressing back toward 160 per dollar at the time of the press conference, having surrendered most of the gains made during what sources described as multiple rounds of intervention in late April and through the Golden Week holiday period ending May 6. Bloomberg analysis of Bank of Japan accounts had previously suggested that up to ¥10 trillion was deployed during that window, though the official figure covering the full April 28 to May 27 period was not due until 1900 JST Friday.That data release will be the session’s defining event for yen markets. Traders have been scrutinising the MOF figure not only for the scale of past spending but for what it implies about the ministry’s tactical approach. A headline number significantly above ¥10 trillion would confirm a large concentrated operation but may raise questions about its lasting effectiveness given the yen’s subsequent retreat. A lower figure could indicate that smaller, targeted deployments were also conducted during May, which strategists have said would likely prompt the market to anticipate a more active and ongoing intervention posture.The yen’s renewed weakness into Friday comes against an unhelpful backdrop. Earlier in the session, Tokyo core CPI for May printed at 1.3% year-on-year, below the 1.5% forecast and extending a six-month run of slowing inflation. The miss, while partly attributable to government subsidies on utilities and tuition, nonetheless reduces the urgency of a near-term BOJ rate hike and leaves the interest rate differential with the United States largely intact. That differential remains the primary structural driver of yen weakness, and until it narrows, intervention is widely viewed as a mechanism for managing the pace of depreciation rather than reversing it.Katayama has US backing for her stance, with Treasury Secretary Scott Bessent having previously described excess foreign exchange volatility as undesirable, a formulation read by markets as tacit American endorsement of Japan’s recent operations. Goldman Sachs has estimated Japan retains sufficient reserve capacity to repeat a late-April-scale intervention around 30 more times, though it expects authorities to deploy that firepower selectively rather than continuously.With the BOJ’s June (15-16) meeting approaching and overnight index swaps still pricing a meaningful probability of a hike despite the soft CPI data, the 1900 JST intervention figures will feed directly into how markets assess both the yen outlook and the central bank’s room to move.—Katayama’s comments are deliberately calibrated to keep the market guessing ahead of the 1900 JST data release. The refusal to confirm or deny past intervention is standard MOF procedure, but reiterating the decisive action language at a regular press conference while the yen is pressing toward 160 is a clear warning shot. The intervention figure itself, covering the period from April 28 to May 27, will be the more significant market event: a number meaningfully above ¥10 trillion could paradoxically weigh on the yen if traders read it as evidence that a large spend failed to hold the line, while a lower figure may imply a tactical approach that the market will immediately test. Coming on the same day as the softer-than-expected Tokyo CPI print, which itself removed some urgency from the BOJ’s near-term hiking case, the yen faces a confluence of pressures heading into the data release.
This article was written by Eamonn Sheridan at investinglive.com.

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