During Monday's Asian trading session, the US dollar slipped against the Japanese yen, marking a second consecutive day of decline as it hovered below the 160 threshold. The pair initially dipped to 158.54 before stabilizing around 158.90. Japan's inflation data accelerated for a second straight month, with July's core CPI rising 1.8% year-on-year, reinforcing market expectations that the Bank of Japan may hike rates in September and lending support to the yen.
Meanwhile, the US Treasury's expanded long-term debt buyback program continued to weigh on the dollar, with Treasury Secretary Bessent hinting that buyback volumes could surpass the $4 billion per operation cap. However, the greenback's downside appears limited—escalating US-Iran geopolitical tensions are generating safe-haven demand for the dollar, as Iran's foreign minister dismissed upcoming American sanctions as a "desperate act" and Tehran's security chief warned of "earthquake-like" retaliation against any further US moves.
In the Asian session, USD/JPY extended its slide for a second day, trading near 158.90. The latest inflation readings, which accelerated for two consecutive months, saw July's core CPI climb to 1.8% year-on-year—in line with forecasts and up from June's 1.6%—further solidifying bets on a BOJ rate hike next month. Strategists at Scotiabank noted that the fresh price data "marginally reinforced confidence in a policy tightening next month," with swaps markets already pricing in roughly 20 basis points of hikes. The bank added that "the price data helped the yen gain 0.4% against a softer dollar on the day," highlighting how markets are increasingly aligning with the BOJ's near-term normalization trajectory.
On the dollar front, the Treasury's unexpected commitment to at least double its long-term debt buyback program—aimed at curbing rising yields—has kept the greenback under pressure. Secretary Bessent suggested buybacks could exceed $4 billion per operation, signaling that "yields are not reflecting fundamentals." This initiative continues to weigh on the dollar, providing additional tailwinds for the yen. Yet, the dollar's downside may be capped by geopolitical risks. Iran's foreign minister labeled the impending US sanctions as "an act of desperation" that won't weaken Tehran, while Iran's security chief warned of "earthquake-like" reprisals should Trump take further action. The intensifying US-Iran standoff is funneling safe-haven flows into the dollar, limiting USD/JPY's descent.
HSBC's latest FX outlook projects USD/JPY at 161 for Q3, 162 for Q4, 163 for Q1 2027, and 164 for Q2, with a longer-term bias to the upside. The bank's base case sees the pair trading in a range: Japan's Finance Ministry's episodic intervention will cap upside, while Japan's persistently negative real rates provide support. Volatility may widen near-term due to both dollar-side factors and yen-side dynamics, including potential US-Japan joint intervention, BOJ policy shifts, and adjustments related to the Government Pension Investment Fund and tax-exempt savings accounts. HSBC emphasized that joint intervention could buy time for accelerated rate hikes, capital flow policy adjustments, and fiscal discipline, but a sustained, substantial yen appreciation is unlikely if US-Japan yield differentials remain wide and fiscal concerns persist.
Rabobank noted that Treasury Secretary Bessent's bond buyback announcement had previously pushed the dollar lower, temporarily distancing USD/JPY from the 160 psychological level. Japan's fiscal and debt dynamics, US government spending plans, and shifts in long-term Treasury demand are collectively influencing the exchange rate. Rabobank believes that a more resolute BOJ policy rate, structural reforms, and economic resilience offer a pathway for the yen to find support in the coming months, though 2027 budget discussions could significantly sway market sentiment. The dollar still retains its safe-haven status thanks to its dominance in the global payments system. Overall, unless multiple factors—improved fiscal outlooks, a clearly hawkish central bank, and cooling Fed tightening concerns—align simultaneously, yen recovery will remain constrained, with the currency likely oscillating between intervention and fundamentals.
In summary, USD/JPY has declined for a second consecutive day to near 158.90. Japan's inflation data accelerated for two straight months, with July's core CPI reaching 1.8%, strengthening expectations for a BOJ September hike and supporting the yen. Scotiabank pointed out that the inflation data "marginally reinforced" confidence in next month's tightening. The dollar is under pressure from the Treasury buyback program, but US-Iran geopolitical tensions are providing safe-haven demand, limiting further downside. Amid the interplay of inflation data and geopolitical risks, USD/JPY is likely to oscillate within the 158.00-160.00 range in the near term, awaiting clarity from the BOJ's September meeting and Treasury yield movements.
As of 11:14 Beijing time on August 24, USD/JPY was trading at 158.91/92.
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