On a Friday at the close of April, the yen found a moment of relief after Japanese authorities were reported to have spent heavily to hold up their currency, a reminder that even large economies sometimes must physically push back against the tides of money. The pressure behind it is older than any single trading day: a wide gap between American and Japanese interest rates, and energy costs swollen by the Iran war, have steadily drawn capital toward the dollar. Whether this pause becomes a turning point or merely a breath depends on what the central banks do next, and on whether the speculator
Dollar Heads for Sharpest Weekly Drop Against Yen as Japan Intervenes
Its effects tend to fade without accompanying policy shifts
Mark
So what actually happened this week?
Mimi
The yen hit 160.7 per dollar on Thursday, its weakest since July 2024, and Japan reportedly bought yen. The dollar then fell from about 157.1 to 155.49 at one point.
Luke
Worth flagging that the intervention itself rests on two unnamed sources talking to Reuters. The spending figure is also hedged: Bank of Japan data suggested up to 5.48 trillion yen.
Mark
Why does Mimura's comment matter?
Mimi
He said speculative positions were still evident. It signals officials remain uneasy, and the dollar recovered a bit after he spoke, ending up 0.26% at 157.04.
Luke
It's a signal, not a promise. Nothing in the reporting says what level or action he has in mind.
Mark
Will the intervention hold?
Mimi
Shinohara is doubtful. He says effects tend to fade without rate hikes or coordination, and the rate gap and oil prices are still pushing the other way.
Luke
That's one strategist's view, though it matches the pattern Barclays describes of repeated rounds.
Mark
And Golden Week?
Mimi
Barclays says intervention could come again, even during the holiday, if the pair rebounds sharply toward 160. Past rounds came on consecutive days.
Luke
That's a risk assessment, not a forecast. Whether Japan acts again is unknown.
Il Polso
- The yen slid to 160.7 per dollar, its weakest level since July 2024, and the authorities could no longer stand idly by.
- Two unnamed sources say Japan spent up to roughly $35 billion buying yen, a sum nearly matching the 2024 intervention.
- The dollar tumbled from about 157.1 to 155.49 yen in a single sweep before clawing back to near 157.
- Analysts fear another round during Golden Week if the dollar surges back toward 160, as authorities have acted on consecutive days before.
- Markets now price roughly a two-thirds chance of a Bank of Japan rate hike in June, which could set the next decisive move.
On a Friday at the close of April, the yen found a moment of relief after Japanese authorities were reported to have spent heavily to hold up their currency, a reminder that even large economies sometimes must physically push back against the tides of money. The pressure behind it is older than any single trading day: a wide gap between American and Japanese interest rates, and energy costs swollen by the Iran war, have steadily drawn capital toward the dollar. Whether this pause becomes a turning point or merely a breath depends on what the central banks do next, and on whether the speculators who pushed the yen down are still waiting in the wings.
On Friday the dollar was on course for its worst week against the yen since early February, dropping about 1.7% after reports that Japan had stepped into the market to prop up its currency. For a moment the dollar fell from around 157.1 to 155.49 yen before recovering to roughly 157.04. The trigger came the day before, when two sources told Reuters that Japanese officials had bought yen after it weakened to 160.7 per dollar, its lowest point since July 2024. Tokyo has not publicly confirmed the move.
Bank of Japan data suggested the operation may have cost up to 5.48 trillion yen, about $35 billion, just under the $36.8 billion spent in July 2024. The partial rebound followed remarks from Japan's top currency diplomat, Atsushi Mimura, who said speculative positions were still visible, a sign of how uneasy the authorities remain about the speed of the yen's decline.
The deeper pressure has not gone away. Interest rate gaps between the US and Japan remain wide, and oil prices lifted by the Iran war have strengthened the dollar. Analysts caution that intervention alone rarely lasts without policy changes, such as rate hikes or coordination among governments.
Attention now turns to Golden Week, Japan's holiday next week, when traders expect a possible repeat if the dollar climbs sharply back toward 160. Elsewhere, the ECB and Bank of England held rates steady, while both the ECB and the BOJ signalled they could raise rates as soon as June to counter inflation from costlier energy imports. Markets see about a two-thirds chance of a BOJ hike in June, and that outlook, together with a firmer Fed, may limit how far the yen can recover.
On Friday, the dollar was on course for its worst week against the yen since early February, down about 1.7%, after Japan was reported to have stepped into the market to prop up its currency. At one point the dollar slid from around 157.1 to 155.49 yen. It then recovered some of that ground and was last up 0.26% at 157.04.
The trigger came a day earlier. Two sources familiar with the matter told Reuters that Japanese officials bought yen on Thursday after the currency fell to 160.7 per dollar, its weakest level since July 2024. Tokyo has not been described here as confirming the move; the account rests on those two unnamed sources.
Bank of Japan data released Friday gave a rough sense of the cost. It suggested authorities may have spent up to 5.48 trillion yen, about $35 billion. That is just under the $36.8 billion deployed in July 2024.
The partial rebound followed remarks from Atsushi Mimura, Japan's top currency diplomat. He said speculative positions were still evident, which underlined the authorities' discomfort with how fast the yen has been moving.
The pressure on the yen has deeper roots. The gap between US and Japanese interest rates remains wide, and higher oil prices tied to the Iran war have added to dollar strength. Uto Shinohara, senior investment strategist at Mesirow Currency Management in Chicago, was cautious about how long the intervention will matter. He said its durability is uncertain and that its effects historically tend to fade without accompanying policy shifts, rate hikes or coordination.
Next week brings Japan's Golden Week holiday, and analysts are watching for a repeat. Barclays analysts led by Shinichiro Kadota noted that authorities intervened during Golden Week in 2024, and that the interventions of both 2022 and 2024 took place on consecutive days. They see a continuing risk of more intervention, even during the holiday, if the dollar-yen pair rebounds sharply toward 160. They added that past consecutive rounds were not necessarily set off only when the pair returned to the earlier intervention level. Authorities have tended to act again when it rebounded sharply.
Elsewhere, central banks stayed on hold. The European Central Bank and Bank of England kept rates steady on Thursday, as expected, following earlier pauses by the Federal Reserve and the Bank of Japan. Both the ECB and the BOJ signalled they could start raising rates as soon as June to contain inflation from pricier imported energy.
The euro was flat at $1.1721 and headed for a second straight weekly gain. Sterling was down 0.16% at $1.135803 and poised to end four consecutive weekly advances. The dollar was down 0.03% at 0.78150 against the Swiss franc, set for a second weekly loss.
Shinohara pointed to a limit on any yen recovery. Markets price roughly a two-thirds chance of a BOJ hike in June, he said, while expectations for Fed cuts have largely evaporated. That divergence, along with a more hawkish Fed, restricts how far the yen can sustainably strengthen. The things to watch are the dollar-yen pair as it nears 160 and the June central bank meetings.
Citazioni salienti
The durability of intervention remains uncertain.— Uto Shinohara, Mesirow Currency Management
The risk of additional intervention, even during the holiday period, remains if USDJPY rebounds sharply towards 160.— Barclays analysts led by Shinichiro Kadota
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