Fixed Income Chart Of The Day

Latest edition · September 18, 2026

Fixed Income Chart Of The Day Treasuries at 5% What it means for the Yen and JGBs

With the US 10-year Treasury yield hitting 5%, USD/JPY has decoupled from US rates due to BoJ hike expectations and positive yen-buying bond flows. At the same time, FX-hedging costs ensure hedged JGBs remain more attractive than Treasuries for both USD- and JPY-based investors.

The US 10-year Treasury reaching 5% poses critical questions for Tokyo trading desks regarding the yen and Japanese government bonds. The historical correlation between USD/JPY and US rates has decoupled since July, driven by expectations of Bank of Japan rate hikes, three straight weeks of net foreign buying in yen debt, and crowded speculative short positions. For JGBs, 5% Treasuries exert spillover pressure on the super-long sector through global term premia, but FX-hedged JGB yields still offer substantial pickups over Treasuries (yielding 5.68% hedged at 10 years and 6.75% at 30 years in USD terms). Consequently, 5% yields will not draw Japanese capital back to US markets, cementing Tokyo as the marginal buyer of duration.

Key takeaways from the latest edition

• 1.The Japanese yen has uncoupled from US interest rates since July, strengthening despite a 52bp rise in the US 10-year yield, driven by BoJ rate hike expectations, positive foreign bond flows, and heavy short positioning.
• 2.Treasuries reaching 5% acts as a carry headwind that slows the yen's appreciation trend rather than driving it, with next week's BoJ meeting serving as a crucial referendum on market confidence.
• 3.For JGBs, 5% Treasuries put upward pressure on super-long yields via global term premia spillover, but FX-hedged JGBs continue to offer compelling yield pickups over Treasuries for dollar-based investors.

What this series covers

• Rates
• Fixed Income Chart Of The Day
• Treasuries at 5%: What it means for the Yen and JGBs

Edition archive

• Fixed Income Chart Of The Day Treasuries at 5% What it means for the Yen and JGBs

  September 18, 2026

• Fixed Income Chart Of The Day - A more robust alternative to FCIs

  August 6, 2026

• DB - Fixed Income Chart Of The Day - How much repo would Treasury do... and would Treasury do repo

  July 31, 2026