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Mizuho Securities

June 4, 2026

Curve Implications of Progress in Iran Peace Negotiations

Rates StrategyRates Govt BondsDerivativesOther

Progress in Iran peace talks is driving downward pressure on global long-term yields, but firm BOJ rate hike expectations and new JGB supply concerns from 'bridging bonds' are limiting the decline in Japanese rates.

Key Takeaways

  • 1.Progress in Iran peace negotiations is expected to exert downward pressure on long-term rates as global inflation concerns ease.
  • 2.Expectations for a BOJ rate hike in June remain high (currently ~80% probability), which will likely prevent a sharp decline in short-term yen rates.
  • 3.The Japanese government's proposal for 'bridging bonds' to fund economic growth and crisis management is seen as a negative supply factor for the JGB market.

Table of Contents

  • Curve implications of progress in Iran peace negotiations
  • Assessing rates impact of "bridging bonds" proposal
  • DEVELOPMENTS THIS WEEK AND IMPLICATIONS FOR RATES OUTLOOK
  • SHORT-TERM OUTLOOK (ONE WEEK – ONE MONTH)
  • MEDIUM-TERM OUTLOOK (SEVERAL MONTHS – ONE YEAR)
  • Risk scenarios
  • Yen rates relative value and investment strategies
  • RELATIVE VALUE SCORE TABLES

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Authors

Noriatsu TanjiYuhi Kawano

Securities

10-year Japanese Government Bond20-year Japanese Government Bond ASW2y-forward 1y JPY OIS

Themes

Geopolitical De-escalationMonetary Policy TighteningFiscal Supply Pressure

Regions

Asia PacificNorth AmericaMiddle EastJapanUnited StatesIran