Japanese Yen Nears 40-Year Low as US Dollar Gains Amid Geopolitical Tensions

The Japanese yen is facing significant downward pressure, hovering near its weakest levels in years as the US dollar strengthens globally. Market volatility is being fueled by stalled peace negotiations between the US and Iran, alongside investor uncertainty regarding Japan's domestic fiscal policies.

Geopolitical Uncertainty Drives Dollar Strength

The US dollar index rose 0.3% to a one-year high of 101.07 during recent Asian trading sessions. This surge was largely triggered by geopolitical instability after US Vice President JD Vance withdrew from a planned meeting with Iranian negotiators in Switzerland. The meeting was intended to discuss the implementation of a 14-point agreement aimed at ending the conflict between Tehran and Washington.

With the peace deal hanging in the balance, traders have flocked to the greenback as a safe haven. This movement has kept the yen trading flat at approximately 161.455 against the dollar, testing levels not seen in decades.

Challenges for the Bank of Japan and Yen Stability

Despite the Bank of Japan (BOJ) recently hiking interest rates to a 31-year high, the yen has found little relief. Analysts from DBS noted that large speculative "short" positions on the yen have not eased, suggesting that investors are still betting against the currency.

Further complicating the outlook are concerns regarding the spending plans of Japanese Prime Minister Sanae Takaichi, which have rattled investor confidence. While the Ministry of Finance has previously intervened in the market—deploying roughly ¥11.7 trillion in April and May—there are concerns about the sustainability of such massive interventions. Market analysts suggest that if the yen tests the 161.95 level, the government may need to use a significant portion of its reserves, potentially depleting 11-12% of its total holdings in a short period.

Inflation Outlook and Federal Reserve Expectations

The macroeconomic landscape remains complex. In Japan, annual core inflation stayed below the 2% target for the fourth consecutive month in May, aided by government fuel subsidies. However, Capital Economics predicts that as energy cost pass-throughs occur, inflation could rise to approximately 3.5% by early 2027.

Simultanément, les prochaines décisions de la Réserve fédérale américaine font l'objet d'un examen attentif. Les marchés réévaluent la probabilité de hausses des taux d'intérêt pour lutter contre l'inflation. Selon l'outil FedWatch du CME Group, la probabilité implicite d'une hausse de 25 points de base lors de la réunion de juillet a bondi à 39,6 %, contre seulement 8 % une semaine auparavant. Ce changement d'attentes continue de favoriser le dollar américain, accentuant la pression sur les devises des marchés émergents et sur le yen.

Points clés

  • Risque géopolitique : L'annulation des pourparlers de paix entre les États-Unis et l'Iran a renforcé la vigueur du dollar américain, poussant le yen vers des niveaux historiquement bas depuis plusieurs décennies.
  • Limites d'intervention : Bien que la Banque du Japon ait relevé ses taux, l'ampleur des positions courtes spéculatives et les préoccupations budgétaires signifient que de nouvelles interventions gouvernementales sur le marché pourraient être nécessaires pour défendre le niveau de 161,95.
  • Divergence des trajectoires monétaires : L'augmentation des attentes concernant les hausses de taux de la Fed américaine donne un élan supplémentaire au dollar, contrastant avec la difficulté du Japon à maintenir la stabilité de sa monnaie malgré les hausses de taux nationales.