Japan's currency pared its intraday losses on Friday after reports emerged that the central bank had conducted a rate check, reigniting market speculation that authorities may be moving closer to intervening in the foreign exchange market once again.
According to a report from Japanese media near the end of US morning trading on Friday, the Bank of Japan (BOJ) had asked market participants about currency levels. The yen accelerated its recovery shortly after the report, with the greenback falling back below 156.80 against the Japanese currency during early US afternoon trade, trimming its daily gain to roughly 0.5%, which later narrowed further to near 0.4%.
During the European trading session, the dollar had surged past 158.00 yen—a two-week low for the yen—representing an intraday climb of more than 1%. Despite the reported BOJ rate check, the yen is still on track for a fourth consecutive day of losses.
The sudden rebound in the yen comes hot on the heels of the BOJ's September policy meeting, where two board members voted against the widely expected rate hike, drawing attention to the potential pace of future monetary policy tightening.
The key question surrounding the rate check reports centers on whether Japanese authorities are preparing for heavier intervention and whether the yen's persistent weakness is approaching the threshold of policy tolerance.
Rate check signals intervention alert, but actual entry has not yet occurred
As first reported by Nikkei, the BOJ has been conducting rate checks in the currency market, inquiring with participants about exchange rate levels. Media sources observed the yen jumping by more than one full yen against the dollar following the news.
A rate check typically involves the government asking financial institutions about specific exchange rates or market conditions to gauge the trading environment. Markets often view such inquiries as a precursor to potential intervention, as they may indicate that authorities are assessing the optimal timing and likely market reaction before stepping in.
However, a rate check in itself does not mean the Japanese government has actually begun purchasing yen. While the BOJ executes operations, the decision-making authority for currency intervention lies primarily with the Ministry of Finance. Whether action is truly taken would require official confirmation or subsequent data.
Yen slides for four straight days as rate hike fails to provide support
The yen registered its fourth straight day of losses on Friday, touching a two-week low during European trading hours. This followed the BOJ's rate decision, which delivered a widely expected hike but was undermined by the dissenting votes from two policy board members, raising doubts about the future path of rate increases.
On Friday, the BOJ lifted its policy rate to 1.25%, the highest level in 31 years, following its monetary policy meeting. Yet the decision was not unanimous, and the central bank's forward guidance on tightening failed to fully satisfy some market participants' expectations.
The yen remained under pressure after the meeting, with the dollar-yen pair extending gains to break above 158.00 during European trading—the highest level since September 3—representing a daily surge of more than 1.3%.
This highlights the policy dilemma facing Japanese monetary authorities: even if the central bank continues to raise rates, the yen may remain vulnerable to interest rate differentials and dollar strength if markets perceive the pace of future hikes as too slow.
Tokyo's two major interventions this year, joint yen buying with Washington rare
Japanese authorities have taken multiple actions to stabilize the yen this year, with Ministry of Finance data indicating substantial intervention volumes:
April 28 to May 27: Data released by the MOF on May 29 showed total intervention during the period reached 11.73 trillion yen, roughly equivalent to $73.8 billion at an exchange rate of approximately 159 yen per dollar.
July 30 to August 26: MOF data from August 29 revealed the government spent 15.4 trillion yen on currency intervention, setting a record for the highest single-month intervention amount.
Late July coordinated action with the US: The MOF confirmed on August 3 that it had carried out a coordinated yen-buying operation with the US Treasury on July 31 to curb recent excessive volatility in the exchange rate.
Joint US-Japan intervention is particularly unusual. Apart from exceptional periods such as financial crises or major natural disasters, coordinated currency action between the two nations is rare; this marked the first such coordinated effort to stabilize the yen since the 2011 Great East Japan Earthquake.
Previously, the yen had remained under persistent pressure due to dollar strength and US-Japan interest rate differentials. Japanese authorities have repeatedly signaled their commitment to currency stability through verbal warnings, rate checks, and actual intervention.
Market focus: will a rate check lead to actual intervention?
The yen's swift rebound following the rate check report demonstrates how sensitive markets remain to potential government action.
Whether a rate check translates into actual intervention, however, still hinges on the yen's trajectory and authorities' assessment. If the currency continues to weaken, the Japanese government could face growing pressure to take further stabilizing measures. Meanwhile, the BOJ's future rate path, US interest rate prospects, and the dollar's direction will continue to shape the yen's movement.
For traders, the key items to watch are not just whether Tokyo confirms the rate check, but whether actual yen-buying intervention materializes, and whether the BOJ can shift market expectations on interest rate differentials through future policy signals.
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